
Overview
Background
Dr. Nguyen is an expert in applying long-read Oxford Nanopore Sequencing Technologies (ONT) in agriculture, particularly livestock and other sectors. Her groundbreaking contributions include being the pioneer in sequencing the genomes of Brahman and Wagyu cattle, developing an innovative epigenetic clock for age prediction in cattle, and successfully implementing ONT portable sequencers for Blockchain traceability systems in Australia.
As a leader in the field, Dr. Nguyen spearheads the use of ONT long-read technology to scaffold genome assemblies in livestock, plants, protists, and insects. Her multidisciplinary expertise in molecular biology, advanced genomics, and animal sciences also empowers her to explore causative markers for commercial SNP arrays and identify significant DNA variants from low-coverage sequencing data sets.
Dr. Nguyen's exceptional achievements and expertise have been acknowledged through the prestigious ARC Industry Fellowship, recognising her as a promising early career researcher. Her work has significantly contributed to advancing genomic research in agriculture and has opened new avenues for utilising ONT sequencing technologies across diverse domains.
Availability
- Dr Loan Nguyen is:
- Available for supervision
Fields of research
Qualifications
- Doctor of Philosophy, The University of Queensland
Works
Search Professor Loan Nguyen’s works on UQ eSpace
2020
Journal Article
Gene regulation could be attributed to TCF3 and other key transcription factors in the muscle of pubertal heifers
Lau, Li Yieng, Nguyen, Loan T., Reverter, Antonio, Moore, Stephen S., Lynn, Aaron, McBride‐Kelly, Liam, Phillips‐Rose, Louis, Plath, Mackenzie, Macfarlane, Rhys, Vasudivan, Vanisha, Morton, Lachlan, Ardley, Ryan, Ye, Yunan and Fortes, Marina R. S. (2020). Gene regulation could be attributed to TCF3 and other key transcription factors in the muscle of pubertal heifers. Veterinary Medicine and Science, 6 (4) vms3.278, 695-710. doi: 10.1002/vms3.278
2020
Journal Article
Characterization of the poll allele in Brahman cattle using long-read Oxford Nanopore sequencing
Lamb, Harrison J., Ross, Elizabeth M., Nguyen, Loan T., Lyons, Russell E., Moore, Stephen S. and Hayes, Ben J. (2020). Characterization of the poll allele in Brahman cattle using long-read Oxford Nanopore sequencing. Journal of Animal Science, 98 (5) skaa127, skaa127. doi: 10.1093/jas/skaa127
2019
Journal Article
Proteomics recapitulates ovarian proteins relevant to puberty and fertility in Brahman heifers (Bos indicus L.)
Tahir, Muhammad S., Nguyen, Loan T., Schulz, Benjamin L., Boe-Hansen, Gry A., Thomas, Milton G., Moore, Stephen S., Lau, Li Yieng and Fortes, Marina R S (2019). Proteomics recapitulates ovarian proteins relevant to puberty and fertility in Brahman heifers (Bos indicus L.). Genes, 10 (11) 923, 923. doi: 10.3390/genes10110923
2019
Conference Publication
Pre- and post-puberty co-expression gene networks from RNA-sequencing of Brahman heifers
Nguyen, Loan T., Reverter, Antonio, Cánovas, Angela, Porto-Neto, L.R., Venus, Bronwyn, Islas-Trejo, Alma, Lehnert, Sigrid A., Medrano, Juan F., Thomas, Milton G., Moore, Stephen S. and Fortes, Marina R.S. (2019). Pre- and post-puberty co-expression gene networks from RNA-sequencing of Brahman heifers. Proceedings of the Association for the Advancement of Animal Breeding and Genetics, Armidale, NSW, Australia, 27 October - 1 November 2019.
2018
Other Outputs
Using transcriptomic and proteomic analysis to characterize the biological basis of puberty in Brahman heifers
Nguyen, Loan To (2018). Using transcriptomic and proteomic analysis to characterize the biological basis of puberty in Brahman heifers. PhD Thesis, School of Chemistry and Molecular Biosciences, The University of Queensland. doi: 10.14264/uql.2018.857
2018
Journal Article
Combining multi-OMICs information to identify key-regulator genes for pleiotropic effect on fertility and production traits in beef cattle
Fonseca, Pablo Augusto de Souza, Id-Lahoucine, Samir, Reverter, Antonio, Medrano, Juan F., Fortes, Marina S., Casellas, Joaquim, Miglior, Filippo, Brito, Luiz, Carvalho, Maria Raquel S., Schenkel, Flávio S., Nguyen, Loan T., Porto-Neto, Laercio R., Thomas, Milton G. and Cánovas, Angela (2018). Combining multi-OMICs information to identify key-regulator genes for pleiotropic effect on fertility and production traits in beef cattle. PLOS ONE, 13 (10) e0205295, e0205295. doi: 10.1371/journal.pone.0205295
2018
Journal Article
Pre- and post-puberty expression of genes and proteins in the uterus of Bos indicus heifers: the luteal phase effect post-puberty
Fortes, M. R.S., Zacchi, L. F., Nguyen, L. T., Raidan, F., Weller, M. M.D.C.A., Choo, J. J.Y., Reverter, A., Rego, J. P.A., Boe-Hansen, G. B., Porto-Neto, L. R., Lehnert, S. A., Cánovas, A., Schulz, B. L., Islas-Trejo, A., Medrano, J. F., Thomas, M. G. and Moore, S. S. (2018). Pre- and post-puberty expression of genes and proteins in the uterus of Bos indicus heifers: the luteal phase effect post-puberty. Animal Genetics, 49 (6), 539-549. doi: 10.1111/age.12721
2018
Journal Article
Adipose tissue proteomic analyses to study puberty in Brahman heifers
Nguyen, L. T., Zacchi, L. F., Schulz, B. L., Moore, S. S. and Fortes, M. R. S. (2018). Adipose tissue proteomic analyses to study puberty in Brahman heifers. Journal of Animal Science, 96 (6), 2392-2398. doi: 10.1093/jas/sky128
2018
Conference Publication
Functional Characterization of Genes Mapped in Transmission Ratio Distortion Regions of the Bovine Genome Affecting Reproduction
Fonseca, P. A. D. S., Id-Lahoucine, S., Casellas, J., Miglior, F., Reverter, A., Fortes, M. R., Nguyen, L. T., Porto-Neto, L. R., Sargolzaei, M., Brito, L. F., Miller, S. P., Schenkel, F. S., Lohuis, M., Medrano, J. F. and Canovas, A. (2018). Functional Characterization of Genes Mapped in Transmission Ratio Distortion Regions of the Bovine Genome Affecting Reproduction. CARY: OXFORD UNIV PRESS INC.
2018
Journal Article
STAT6, PBX2, and PBRM1 emerge as predicted regulators of 452 differentially expressed genes associated with puberty in Brahman heifers
Nguyen, Loan T., Reverter, Antonio, Cánovas, Angela, Venus, Bronwyn, Anderson, Stephen T., Islas-Trejo, Alma, Dias, Marina M., Crawford, Natalie F., Lehnert, Sigrid A., Medrano, Juan F., Thomas, Milt G., Moore, Stephen S. and Fortes, Marina R.S. (2018). STAT6, PBX2, and PBRM1 emerge as predicted regulators of 452 differentially expressed genes associated with puberty in Brahman heifers. Frontiers in Genetics, 9 (MAR) 87, 1-13. doi: 10.3389/fgene.2018.00087
2017
Conference Publication
A pipeline for the analysis of multi-omics data
Nguyen, Loan To, Fortes, Marina R.S. and Reverter, Antonio (2017). A pipeline for the analysis of multi-omics data. The Association for the Advancement of Animal Breeding and Genetics, Townsville, QLD, Australia, 2-5 July 2017.
2017
Journal Article
SNP detection using RNA-sequences of candidate genes associated with puberty in cattle
Dias, M. M., Cánovas, A, Mantilla-Rojas, C, Riley, D. G., Luna-Nevarez, P, Coleman, S. J., Speidel, S. E., Enns, R. M., Islas-Trejo, A., Medrano, J. F., Moore, S. S., Fortes, M. R. S., Nguyen, L. T., Venus, B., Diaz, I. S. D. P., Souza, F. R. P., Fonseca, L. F. S., Baldi, F., Albuquerque, L. G., Thomas, M. G. and Oliveira, H. N. (2017). SNP detection using RNA-sequences of candidate genes associated with puberty in cattle. Genetics and Molecular Research, 16 (1) gmr16019522. doi: 10.4238/gmr16019522
2017
Journal Article
Global differential gene expression in the pituitary gland and the ovaries of pre- and postpubertal Brahman heifers
Nguyen, L. T., Reverter, A., Canovas, A., Venus, B., Islas-Trejo, A., Porto-Neto, L. R., Lehnert, S. A., Medrano, J. F., Moore, S. S. and Fortes, M. R. S. (2017). Global differential gene expression in the pituitary gland and the ovaries of pre- and postpubertal Brahman heifers. Journal of Animal Science, 95 (2), 599-615. doi: 10.2527/jas.2016.0921
2016
Journal Article
Transcriptome analyses identify five transcription factors differentially expressed in the hypothalamus of post-versus prepubertal Brahman heifers
Fortes, M. R. S., Nguyen, L. T., Weller, M. M. D. C. A., Canovas, A., Islas-Trejo, A., Porto-Neto, L. R., Reverter, A., Lehnert, S. A., Boe-Hansen, G. B., Thomas, M. G., Medrano, J. F. and Moore, S. S. (2016). Transcriptome analyses identify five transcription factors differentially expressed in the hypothalamus of post-versus prepubertal Brahman heifers. Journal of Animal Science, 94 (9), 3693-3702. doi: 10.2527/jas.2016-0471
2016
Journal Article
Polymorphisms and genes associated with puberty in heifers
Fortes, Marina R.S., Nguyen, Loan To, Porto Neto, Laercio R., Reverter, Antonio, Moore, Stephen S., Lehnert, Sigrid A. and Thomas, Milton G. (2016). Polymorphisms and genes associated with puberty in heifers. Theriogenology, 86 (1), 333-339. doi: 10.1016/j.theriogenology.2016.04.046
2016
Conference Publication
Liver transcriptome from pre versus post-pubertal Brahman heifers
Nguyen, L. T., Reverter-Gomez, A., Canovas, A., Venus, B., Islas-Trejo, A., Lehnert, S. A., Medrano, J. F., Moore, S. S. and Fortes, M. R. (2016). Liver transcriptome from pre versus post-pubertal Brahman heifers. Animal Genomes (FAANG) ASAS-ISAG Joint Symposium, Salt Lake City, UT United States, 23 July 2016. Cary, NC United States: Oxford University Press. doi: 10.1093/ansci/94.supplement4.20
2015
Conference Publication
Non-synonimous polymorphism in helb is associated with male and female reproductive traits in cattle
Fortes, M. R. S., Almughlliq, F. B., Nguyen, L. T., Porto Neto, L. R. and Lehnert, S. A. (2015). Non-synonimous polymorphism in helb is associated with male and female reproductive traits in cattle. Association for the Advancement of Animal Breeding and Genetics, Lorne, VIC, Australia, 28-30 September 2015. Bundoora, VIC, Australia: Association for the Advancement of Animal Breeding and Genetics.
2015
Conference Publication
Effects of TEX11 and AR polymorphisms on reproduction and growth traits in Australian beef cattle
Nguyen, L. T., Camargo, G. M. F. D, Lyons, R. E., Lehnert, S. A. and Fortes, M. R. S. (2015). Effects of TEX11 and AR polymorphisms on reproduction and growth traits in Australian beef cattle. Proceedings of the Association for the Advancement of Animal Breeding and Genetics, Lorne, VIC, Australia, 28-30 September 2015. Bundoora, VIC, Australia: Association for the Advancement of Animal Breeding and Genetics.
2014
Journal Article
Evidence for positive selection of taurine genes within a QTL region on chromosome X associated with testicular size in Australian Brahman cattle
Lyons, Russell E., Loan, Nguyen To, Dierens, Leanne, Fortes, Marina R. S., Kelly, Matthew, McWilliam, Sean S., Li, Yutao, Bunch, Rowan J., Harrison, Blair E., Barendse, William, Lehnert, Sigrid A. and Moore, Stephen S. (2014). Evidence for positive selection of taurine genes within a QTL region on chromosome X associated with testicular size in Australian Brahman cattle. BMC Genetics, 15 (1) 6, 6.1-6.10. doi: 10.1186/1471-2156-15-6
Supervision
Availability
- Dr Loan Nguyen is:
- Available for supervision
Before you email them, read our advice on how to contact a supervisor.
Available projects
-
Cas9 targeted enrichment of age-related sites
Tools to predict birthdates of cattle are desperately required by industry to ensure compliance with breed registration requirements and to increase the rate of genetic gain for traits such as growth rate and fertility. This study will use new methods of gene targeting and sequencing to investigate the predictive ability of the methylation status of key genes related to age in mammals. Several studies found age-related-conserved sites among species. From these a list of 43 age related genes in cattle has been derived. In this study these genes will be targeted for sequencing and methylation calling in cattle of varying ages. A predictive statistical approach will then the used to associated the methylation rates of those genes with animal age, which can then be used to calculate birthdate.
This project will apply long-read Oxford Nanopore Sequencing CAS9 targeted enrichment. The project aims to use this approach to target age-related-conversed genes among humans, dogs, and cattle. Finally, validation in large populations will be performed with the most significant age-related sites using quantitative methylation-specific PCR. The ultimate aim of this work is to develop an on farm diagnostic tool that will allows producers to record accurate birthdates and improve the profitability of the beef industry through genetic gain for key traits.
This project will develop skills in bioinformatics and molecular biology. Students will learn how to design experiments, perform sequencing, and manage very large sequence data sets.
-
A comparison of Full-length transcript sequencings methods
Precise gene annotations are essential to understanding the complexity of a species transcriptome and to connect genomic sequence to gene function and ultimately phenotype. RNA sequencing has been widely applied to build a reference transcriptome using short-read sequencing, followed by the assembly or mapping reads to accessible reference genomes. However, short-read sequencing is facing the challenge of lengthy transcripts, repetitive regions, and transposable elements. Long read-sequencing technology, represented by Pacbio Sequencing and Oxford Nanopore sequencing, has overwhelmed this challenge by generating full-length transcripts. Another advantage of Oxford Nanopore sequencing is the potential to direct sequence RNA molecules to remove PCR bias and identify the base modifications.
In this study, students will perform direct cDNA sequencing and direct RNA sequencing from the liver samples from two cattle genomes using Pacbio isoform sequencing and Nanopore sequencing. The generated sequencing datasets will be compared between technologies and published sequencing data from the same tissues (RNAseq and CAGEseq). The ultimate aim of this project is to advance our understanding of emerging technologies and deeping our understanding of the cattle transcriptome.
This project will developed molecular techniques (DNA extraction, library preparation and sequencing) and bioinformatics skills. Students will learn how to work with RNA samples and manage extensive sequencing data sets.
-
DNA extraction method for faecal metagenomics to assess cattle diet
Cattle diet history information can be obtained by studying non-invasive samples, like dried faecal samples. Additionally, the analysis of faecal samples can also provide the information about the digestive efficiency of an animal. The advent of improved sequencing methodologies has simplified the characterization of complex faecal DNA and allows for the characterization of diet profiles by matching the faecal sequence data with available sequence databases of potential food sources. In this study, student will employ different extraction protocols to isolate DNA from faecal samples using a variety of molecular techniques in the lab.
-
Predicting age using methylated sites
In humans, the methylation state of CpG sites changes with age and can therefore be utilized as an accurate biomarker for aging. In cattle, biological age prediction based on methylation status could provide key information for genetic improvement programs. Additionally, comparing chronological age with biological age (based on methylation status) can provide important information about the stress an animal has been under during its lifetime. However, relatively little is known about DNA methylation patterns in cattle. Students will use cutting edge data sources including reduce representation bisulphite sequencing data, whole genome bisulphite sequencing, long read sequencing and human methylation data to identify differentially methylated regions between old and young animals and validate those regions with modern molecular technologies.
-
Exploring tissue specific methylation sites in cattle
DNA methylation is an epigenetic mechanism driving the gene expression in specific tissues at a particular stage. However, the mechanism of how DNA-methylation regulates gene expression in cattle is still unknown. Here, the student will use two types of datasets, whole genome sequencing from Oxford Nanopore sequencing versus RNA sequencing, to explore the relationship between methylation and gene expression. This will be conducted in two tissues, lung and liver.
-
Discovering methane reducing pathways in seaweed
Cattle are a major source of methane, a potent greenhouse gas. Recently, it has been discovered that feeding some seaweeds to cattle, particularly red seaweed (Asparagopsis taxiformis) greatly reduces methane emissions. In this project, the successful candidate will sequence the red seaweed genome, and discover the gene pathways that led to the production of anti-methanogenic compounds. This knowledge could lead to new innovations to reduce methane emissions and so contribute to a large scale reduction in global warming. The student will learn skills in genome sequencing with state of the art (Nanopore) technology as well as cutting edge bioinformatics techniques.
-
Discovering methane reducing pathways in seaweed
Cattle are a major source of methane, a potent greenhouse gas. Recently, it has been discovered that feeding some seaweeds to cattle, particularly red seaweed (Asparagopsis taxiformis) greatly reduces methane emissions. In this project, the successful candidate will sequence the red seaweed genome, and discover the gene pathways that led to the production of anti-methanogenic compounds. This knowledge could lead to new innovations to reduce methane emissions and so contribute to a large scale reduction in global warming. The student will learn skills in genome sequencing with state of the art (Nanopore) technology as well as cutting edge bioinformatics techniques.
-
Cas9 targeted enrichment of age-related sites
Tools to predict birthdates of cattle are desperately required by industry to ensure compliance with breed registration requirements and to increase the rate of genetic gain for traits such as growth rate and fertility. This study will use new methods of gene targeting and sequencing to investigate the predictive ability of the methylation status of key genes related to age in mammals. Several studies found age-related-conserved sites among species. From these a list of 43 age related genes in cattle has been derived. In this study these genes will be targeted for sequencing and methylation calling in cattle of varying ages. A predictive statistical approach will then the used to associated the methylation rates of those genes with animal age, which can then be used to calculate birthdate.
This project will apply long-read Oxford Nanopore Sequencing CAS9 targeted enrichment. The project aims to use this approach to target age-related-conversed genes among humans, dogs, and cattle. Finally, validation in large populations will be performed with the most significant age-related sites using quantitative methylation-specific PCR. The ultimate aim of this work is to develop an on farm diagnostic tool that will allows producers to record accurate birthdates and improve the profitability of the beef industry through genetic gain for key traits.
This project will develop skills in bioinformatics and molecular biology. Students will learn how to design experiments, perform sequencing, and manage very large sequence data sets.
-
A comparison of Full-length transcript sequencings methods
Precise gene annotations are essential to understanding the complexity of a species transcriptome and to connect genomic sequence to gene function and ultimately phenotype. RNA sequencing has been widely applied to build a reference transcriptome using short-read sequencing, followed by the assembly or mapping reads to accessible reference genomes. However, short-read sequencing is facing the challenge of lengthy transcripts, repetitive regions, and transposable elements. Long read-sequencing technology, represented by Pacbio Sequencing and Oxford Nanopore sequencing, has overwhelmed this challenge by generating full-length transcripts. Another advantage of Oxford Nanopore sequencing is the potential to direct sequence RNA molecules to remove PCR bias and identify the base modifications.
In this study, students will perform direct cDNA sequencing and direct RNA sequencing from the liver samples from two cattle genomes using Pacbio isoform sequencing and Nanopore sequencing. The generated sequencing datasets will be compared between technologies and published sequencing data from the same tissues (RNAseq and CAGEseq). The ultimate aim of this project is to advance our understanding of emerging technologies and deeping our understanding of the cattle transcriptome.
This project will developed molecular techniques (DNA extraction, library preparation and sequencing) and bioinformatics skills. Students will learn how to work with RNA samples and manage extensive sequencing data sets.
-
DNA extraction method for faecal metagenomics to assess cattle diet
Cattle diet history information can be obtained by studying non-invasive samples, like dried faecal samples. Additionally, the analysis of faecal samples can also provide the information about the digestive efficiency of an animal. The advent of improved sequencing methodologies has simplified the characterization of complex faecal DNA and allows for the characterization of diet profiles by matching the faecal sequence data with available sequence databases of potential food sources. In this study, student will employ different extraction protocols to isolate DNA from faecal samples using a variety of molecular techniques in the lab.
-
Predicting age using methylated sites
In humans, the methylation state of CpG sites changes with age and can therefore be utilized as an accurate biomarker for aging. In cattle, biological age prediction based on methylation status could provide key information for genetic improvement programs. Additionally, comparing chronological age with biological age (based on methylation status) can provide important information about the stress an animal has been under during its lifetime. However, relatively little is known about DNA methylation patterns in cattle. Students will use cutting edge data sources including reduce representation bisulphite sequencing data, whole genome bisulphite sequencing, long read sequencing and human methylation data to identify differentially methylated regions between old and young animals and validate those regions with modern molecular technologies.
-
Exploring tissue specific methylation sites in cattle
DNA methylation is an epigenetic mechanism driving the gene expression in specific tissues at a particular stage. However, the mechanism of how DNA-methylation regulates gene expression in cattle is still unknown. Here, the student will use two types of datasets, whole genome sequencing from Oxford Nanopore sequencing versus RNA sequencing, to explore the relationship between methylation and gene expression. This will be conducted in two tissues, lung and liver.
-
Novel genomic assessments for finding true DNA variants contributing to the difference in beef cattle fertility
This project is for a domestic PhD candidate with a scholarship. Please visit the link for more details.
This project aims to uncover the genetic basis of fertility traits in cattle by using cutting-edge long-read sequencing technology (Oxford Nanopore Technologies, ONT). Traditional genome-wide association studies (GWAS) have identified key regions associated with fertility, but the causal genetic variants remain elusive, particularly structural variants (SVs)—large genomic alterations (>50 bp)—which are often missed by short-read sequencing.
For the first time, this study will analyze structural variants in fertility-related genes, leveraging ONT sequencing and advanced bioinformatics approaches. By integrating gene expression data, fertility phenotypes, and genotypic information from over 28,000 cattle, this project will improve genomic selection models and enable the development of low-cost, high-accuracy sequencing strategies.
Students involved in this project will gain hands-on experience in genomics, bioinformatics, and computational biology, including long-read sequencing, GWAS, structural variant analysis, and genomic prediction modeling. The research is highly applicable to agriculture, animal breeding, and biotechnology, offering opportunities to contribute to real-world improvements in cattle fertility and genetic selection.
-
Using Low-Coverage Sequencing to Predict Age and Methane Emissions in cattle
This project is ideal for an MPhil or Honours student. The student will extract and sequence up to 1,000 hair samples, generating low-coverage sequencing data to assess methylation patterns and predict the age of the animals. Additionally, since these animals have recorded methane emission phenotypes, the dataset may also be used to identify individuals with low methane emissions.
-
Cas9 targeted enrichment of age-related sites
Tools to predict birthdates of cattle are desperately required by industry to ensure compliance with breed registration requirements and to increase the rate of genetic gain for traits such as growth rate and fertility. This study will use new methods of gene targeting and sequencing to investigate the predictive ability of the methylation status of key genes related to age in mammals. Several studies found age-related-conserved sites among species. From these a list of 43 age related genes in cattle has been derived. In this study these genes will be targeted for sequencing and methylation calling in cattle of varying ages. A predictive statistical approach will then the used to associated the methylation rates of those genes with animal age, which can then be used to calculate birthdate.
This project will apply long-read Oxford Nanopore Sequencing CAS9 targeted enrichment. The project aims to use this approach to target age-related-conversed genes among humans, dogs, and cattle. Finally, validation in large populations will be performed with the most significant age-related sites using quantitative methylation-specific PCR. The ultimate aim of this work is to develop an on farm diagnostic tool that will allows producers to record accurate birthdates and improve the profitability of the beef industry through genetic gain for key traits.
This project will develop skills in bioinformatics and molecular biology. Students will learn how to design experiments, perform sequencing, and manage very large sequence data sets.
-
A comparison of Full-length transcript sequencings methods
Precise gene annotations are essential to understanding the complexity of a species transcriptome and to connect genomic sequence to gene function and ultimately phenotype. RNA sequencing has been widely applied to build a reference transcriptome using short-read sequencing, followed by the assembly or mapping reads to accessible reference genomes. However, short-read sequencing is facing the challenge of lengthy transcripts, repetitive regions, and transposable elements. Long read-sequencing technology, represented by Pacbio Sequencing and Oxford Nanopore sequencing, has overwhelmed this challenge by generating full-length transcripts. Another advantage of Oxford Nanopore sequencing is the potential to direct sequence RNA molecules to remove PCR bias and identify the base modifications.
In this study, students will perform direct cDNA sequencing and direct RNA sequencing from the liver samples from two cattle genomes using Pacbio isoform sequencing and Nanopore sequencing. The generated sequencing datasets will be compared between technologies and published sequencing data from the same tissues (RNAseq and CAGEseq). The ultimate aim of this project is to advance our understanding of emerging technologies and deeping our understanding of the cattle transcriptome.
This project will developed molecular techniques (DNA extraction, library preparation and sequencing) and bioinformatics skills. Students will learn how to work with RNA samples and manage extensive sequencing data sets.
-
DNA extraction method for faecal metagenomics to assess cattle diet
Cattle diet history information can be obtained by studying non-invasive samples, like dried faecal samples. Additionally, the analysis of faecal samples can also provide the information about the digestive efficiency of an animal. The advent of improved sequencing methodologies has simplified the characterization of complex faecal DNA and allows for the characterization of diet profiles by matching the faecal sequence data with available sequence databases of potential food sources. In this study, student will employ different extraction protocols to isolate DNA from faecal samples using a variety of molecular techniques in the lab.
-
Predicting age using methylated sites
In humans, the methylation state of CpG sites changes with age and can therefore be utilized as an accurate biomarker for aging. In cattle, biological age prediction based on methylation status could provide key information for genetic improvement programs. Additionally, comparing chronological age with biological age (based on methylation status) can provide important information about the stress an animal has been under during its lifetime. However, relatively little is known about DNA methylation patterns in cattle. Students will use cutting edge data sources including reduce representation bisulphite sequencing data, whole genome bisulphite sequencing, long read sequencing and human methylation data to identify differentially methylated regions between old and young animals and validate those regions with modern molecular technologies.
-
Exploring tissue specific methylation sites in cattle
DNA methylation is an epigenetic mechanism driving the gene expression in specific tissues at a particular stage. However, the mechanism of how DNA-methylation regulates gene expression in cattle is still unknown. Here, the student will use two types of datasets, whole genome sequencing from Oxford Nanopore sequencing versus RNA sequencing, to explore the relationship between methylation and gene expression. This will be conducted in two tissues, lung and liver.
-
Discovering methane reducing pathways in seaweed
Cattle are a major source of methane, a potent greenhouse gas. Recently, it has been discovered that feeding some seaweeds to cattle, particularly red seaweed (Asparagopsis taxiformis) greatly reduces methane emissions. In this project, the successful candidate will sequence the red seaweed genome, and discover the gene pathways that led to the production of anti-methanogenic compounds. This knowledge could lead to new innovations to reduce methane emissions and so contribute to a large scale reduction in global warming. The student will learn skills in genome sequencing with state of the art (Nanopore) technology as well as cutting edge bioinformatics techniques.
-
Novel genomic assessments for finding true DNA variants contributing to the difference in beef cattle fertility
This project is for a domestic PhD candidate with a scholarship. Please visit the link for more details.
This project aims to uncover the genetic basis of fertility traits in cattle by using cutting-edge long-read sequencing technology (Oxford Nanopore Technologies, ONT). Traditional genome-wide association studies (GWAS) have identified key regions associated with fertility, but the causal genetic variants remain elusive, particularly structural variants (SVs)—large genomic alterations (>50 bp)—which are often missed by short-read sequencing.
For the first time, this study will analyze structural variants in fertility-related genes, leveraging ONT sequencing and advanced bioinformatics approaches. By integrating gene expression data, fertility phenotypes, and genotypic information from over 28,000 cattle, this project will improve genomic selection models and enable the development of low-cost, high-accuracy sequencing strategies.
Students involved in this project will gain hands-on experience in genomics, bioinformatics, and computational biology, including long-read sequencing, GWAS, structural variant analysis, and genomic prediction modeling. The research is highly applicable to agriculture, animal breeding, and biotechnology, offering opportunities to contribute to real-world improvements in cattle fertility and genetic selection.
-
Using Low-Coverage Sequencing to Predict Age and Methane Emissions in cattle
This project is ideal for an MPhil or Honours student. The student will extract and sequence up to 1,000 hair samples, generating low-coverage sequencing data to assess methylation patterns and predict the age of the animals. Additionally, since these animals have recorded methane emission phenotypes, the dataset may also be used to identify individuals with low methane emissions.
-
A Path to Affordable Genomic Selection for Sugarcane
This project is ideal for an MPhil or Honours student.
Sugarcane is a vital agro-based industrial crop cultivated in tropical and sub-tropical regions. It serves as raw material for the production of sugar, bioethanol and bioenergy. With the strong population growth of nearly 2.5% as June 30, 2023 (The Australian Bureau of Statistics), a rise in domestic sugar consumption is forecasted in Australia. Unfortunately, sugarcane genomic improvement has seen limited productivity gains compared to other major crops, with a plateauing rate of genetic gains due to long breeding cycles and the low heritability of key traits. Additionally, the high cost of genotyping in sugarcane breeding, primarily due to the reliance on single nucleotide polymorphisms (SNP) arrays, presents a significant barrier to the extensive application of genomic prediction. This project aims to reduce sugarcane genotyping costs in Australia, leveraging innovative sequencing-based allele genotyping for allele dosage and focusing on the most informative markers, making genomic selection more accessible and cost-effective for sugarcane breeding programs.
-
A comparison of Full-length transcript sequencings methods
Precise gene annotations are essential to understanding the complexity of a species transcriptome and to connect genomic sequence to gene function and ultimately phenotype. RNA sequencing has been widely applied to build a reference transcriptome using short-read sequencing, followed by the assembly or mapping reads to accessible reference genomes. However, short-read sequencing is facing the challenge of lengthy transcripts, repetitive regions, and transposable elements. Long read-sequencing technology, represented by Pacbio Sequencing and Oxford Nanopore sequencing, has overwhelmed this challenge by generating full-length transcripts. Another advantage of Oxford Nanopore sequencing is the potential to direct sequence RNA molecules to remove PCR bias and identify the base modifications.
In this study, students will perform direct cDNA sequencing and direct RNA sequencing from the liver samples from two cattle genomes using Pacbio isoform sequencing and Nanopore sequencing. The generated sequencing datasets will be compared between technologies and published sequencing data from the same tissues (RNAseq and CAGEseq). The ultimate aim of this project is to advance our understanding of emerging technologies and deeping our understanding of the cattle transcriptome.
This project will developed molecular techniques (DNA extraction, library preparation and sequencing) and bioinformatics skills. Students will learn how to work with RNA samples and manage extensive sequencing data sets.
-
DNA extraction method for faecal metagenomics to assess cattle diet
Cattle diet history information can be obtained by studying non-invasive samples, like dried faecal samples. Additionally, the analysis of faecal samples can also provide the information about the digestive efficiency of an animal. The advent of improved sequencing methodologies has simplified the characterization of complex faecal DNA and allows for the characterization of diet profiles by matching the faecal sequence data with available sequence databases of potential food sources. In this study, student will employ different extraction protocols to isolate DNA from faecal samples using a variety of molecular techniques in the lab.
-
Exploring tissue specific methylation sites in cattle
DNA methylation is an epigenetic mechanism driving the gene expression in specific tissues at a particular stage. However, the mechanism of how DNA-methylation regulates gene expression in cattle is still unknown. Here, the student will use two types of datasets, whole genome sequencing from Oxford Nanopore sequencing versus RNA sequencing, to explore the relationship between methylation and gene expression. This will be conducted in two tissues, lung and liver.
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Discovering methane reducing pathways in seaweed
Cattle are a major source of methane, a potent greenhouse gas. Recently, it has been discovered that feeding some seaweeds to cattle, particularly red seaweed (Asparagopsis taxiformis) greatly reduces methane emissions. In this project, the successful candidate will sequence the red seaweed genome, and discover the gene pathways that led to the production of anti-methanogenic compounds. This knowledge could lead to new innovations to reduce methane emissions and so contribute to a large scale reduction in global warming. The student will learn skills in genome sequencing with state of the art (Nanopore) technology as well as cutting edge bioinformatics techniques.
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Predicting age using methylated sites
In humans, the methylation state of CpG sites changes with age and can therefore be utilized as an accurate biomarker for aging. In cattle, biological age prediction based on methylation status could provide key information for genetic improvement programs. Additionally, comparing chronological age with biological age (based on methylation status) can provide important information about the stress an animal has been under during its lifetime. However, relatively little is known about DNA methylation patterns in cattle. Students will use cutting edge data sources including reduce representation bisulphite sequencing data, whole genome bisulphite sequencing, long read sequencing and human methylation data to identify differentially methylated regions between old and young animals and validate those regions with modern molecular technologies.
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Cas9 targeted enrichment of age-related sites
Tools to predict birthdates of cattle are desperately required by industry to ensure compliance with breed registration requirements and to increase the rate of genetic gain for traits such as growth rate and fertility. This study will use new methods of gene targeting and sequencing to investigate the predictive ability of the methylation status of key genes related to age in mammals. Several studies found age-related-conserved sites among species. From these a list of 43 age related genes in cattle has been derived. In this study these genes will be targeted for sequencing and methylation calling in cattle of varying ages. A predictive statistical approach will then the used to associated the methylation rates of those genes with animal age, which can then be used to calculate birthdate.
This project will apply long-read Oxford Nanopore Sequencing CAS9 targeted enrichment. The project aims to use this approach to target age-related-conversed genes among humans, dogs, and cattle. Finally, validation in large populations will be performed with the most significant age-related sites using quantitative methylation-specific PCR. The ultimate aim of this work is to develop an on farm diagnostic tool that will allows producers to record accurate birthdates and improve the profitability of the beef industry through genetic gain for key traits.
This project will develop skills in bioinformatics and molecular biology. Students will learn how to design experiments, perform sequencing, and manage very large sequence data sets.
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Novel genomic assessments for finding true DNA variants contributing to the difference in beef cattle fertility
This project is for a domestic PhD candidate with a scholarship. Please visit the link for more details.
This project aims to uncover the genetic basis of fertility traits in cattle by using cutting-edge long-read sequencing technology (Oxford Nanopore Technologies, ONT). Traditional genome-wide association studies (GWAS) have identified key regions associated with fertility, but the causal genetic variants remain elusive, particularly structural variants (SVs)—large genomic alterations (>50 bp)—which are often missed by short-read sequencing.
For the first time, this study will analyze structural variants in fertility-related genes, leveraging ONT sequencing and advanced bioinformatics approaches. By integrating gene expression data, fertility phenotypes, and genotypic information from over 28,000 cattle, this project will improve genomic selection models and enable the development of low-cost, high-accuracy sequencing strategies.
Students involved in this project will gain hands-on experience in genomics, bioinformatics, and computational biology, including long-read sequencing, GWAS, structural variant analysis, and genomic prediction modeling. The research is highly applicable to agriculture, animal breeding, and biotechnology, offering opportunities to contribute to real-world improvements in cattle fertility and genetic selection.
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Using Low-Coverage Sequencing to Predict Age and Methane Emissions in cattle
This project is ideal for an MPhil or Honours student. The student will extract and sequence up to 1,000 hair samples, generating low-coverage sequencing data to assess methylation patterns and predict the age of the animals. Additionally, since these animals have recorded methane emission phenotypes, the dataset may also be used to identify individuals with low methane emissions.
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A Path to Affordable Genomic Selection for Sugarcane
This project is ideal for an MPhil or Honours student.
Sugarcane is a vital agro-based industrial crop cultivated in tropical and sub-tropical regions. It serves as raw material for the production of sugar, bioethanol and bioenergy. With the strong population growth of nearly 2.5% as June 30, 2023 (The Australian Bureau of Statistics), a rise in domestic sugar consumption is forecasted in Australia. Unfortunately, sugarcane genomic improvement has seen limited productivity gains compared to other major crops, with a plateauing rate of genetic gains due to long breeding cycles and the low heritability of key traits. Additionally, the high cost of genotyping in sugarcane breeding, primarily due to the reliance on single nucleotide polymorphisms (SNP) arrays, presents a significant barrier to the extensive application of genomic prediction. This project aims to reduce sugarcane genotyping costs in Australia, leveraging innovative sequencing-based allele genotyping for allele dosage and focusing on the most informative markers, making genomic selection more accessible and cost-effective for sugarcane breeding programs.
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A comparison of Full-length transcript sequencings methods
Precise gene annotations are essential to understanding the complexity of a species transcriptome and to connect genomic sequence to gene function and ultimately phenotype. RNA sequencing has been widely applied to build a reference transcriptome using short-read sequencing, followed by the assembly or mapping reads to accessible reference genomes. However, short-read sequencing is facing the challenge of lengthy transcripts, repetitive regions, and transposable elements. Long read-sequencing technology, represented by Pacbio Sequencing and Oxford Nanopore sequencing, has overwhelmed this challenge by generating full-length transcripts. Another advantage of Oxford Nanopore sequencing is the potential to direct sequence RNA molecules to remove PCR bias and identify the base modifications.
In this study, students will perform direct cDNA sequencing and direct RNA sequencing from the liver samples from two cattle genomes using Pacbio isoform sequencing and Nanopore sequencing. The generated sequencing datasets will be compared between technologies and published sequencing data from the same tissues (RNAseq and CAGEseq). The ultimate aim of this project is to advance our understanding of emerging technologies and deeping our understanding of the cattle transcriptome.
This project will developed molecular techniques (DNA extraction, library preparation and sequencing) and bioinformatics skills. Students will learn how to work with RNA samples and manage extensive sequencing data sets.
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DNA extraction method for faecal metagenomics to assess cattle diet
Cattle diet history information can be obtained by studying non-invasive samples, like dried faecal samples. Additionally, the analysis of faecal samples can also provide the information about the digestive efficiency of an animal. The advent of improved sequencing methodologies has simplified the characterization of complex faecal DNA and allows for the characterization of diet profiles by matching the faecal sequence data with available sequence databases of potential food sources. In this study, student will employ different extraction protocols to isolate DNA from faecal samples using a variety of molecular techniques in the lab.
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Exploring tissue specific methylation sites in cattle
DNA methylation is an epigenetic mechanism driving the gene expression in specific tissues at a particular stage. However, the mechanism of how DNA-methylation regulates gene expression in cattle is still unknown. Here, the student will use two types of datasets, whole genome sequencing from Oxford Nanopore sequencing versus RNA sequencing, to explore the relationship between methylation and gene expression. This will be conducted in two tissues, lung and liver.
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Discovering methane reducing pathways in seaweed
Cattle are a major source of methane, a potent greenhouse gas. Recently, it has been discovered that feeding some seaweeds to cattle, particularly red seaweed (Asparagopsis taxiformis) greatly reduces methane emissions. In this project, the successful candidate will sequence the red seaweed genome, and discover the gene pathways that led to the production of anti-methanogenic compounds. This knowledge could lead to new innovations to reduce methane emissions and so contribute to a large scale reduction in global warming. The student will learn skills in genome sequencing with state of the art (Nanopore) technology as well as cutting edge bioinformatics techniques.
-
Predicting age using methylated sites
In humans, the methylation state of CpG sites changes with age and can therefore be utilized as an accurate biomarker for aging. In cattle, biological age prediction based on methylation status could provide key information for genetic improvement programs. Additionally, comparing chronological age with biological age (based on methylation status) can provide important information about the stress an animal has been under during its lifetime. However, relatively little is known about DNA methylation patterns in cattle. Students will use cutting edge data sources including reduce representation bisulphite sequencing data, whole genome bisulphite sequencing, long read sequencing and human methylation data to identify differentially methylated regions between old and young animals and validate those regions with modern molecular technologies.
-
Cas9 targeted enrichment of age-related sites
Tools to predict birthdates of cattle are desperately required by industry to ensure compliance with breed registration requirements and to increase the rate of genetic gain for traits such as growth rate and fertility. This study will use new methods of gene targeting and sequencing to investigate the predictive ability of the methylation status of key genes related to age in mammals. Several studies found age-related-conserved sites among species. From these a list of 43 age related genes in cattle has been derived. In this study these genes will be targeted for sequencing and methylation calling in cattle of varying ages. A predictive statistical approach will then the used to associated the methylation rates of those genes with animal age, which can then be used to calculate birthdate.
This project will apply long-read Oxford Nanopore Sequencing CAS9 targeted enrichment. The project aims to use this approach to target age-related-conversed genes among humans, dogs, and cattle. Finally, validation in large populations will be performed with the most significant age-related sites using quantitative methylation-specific PCR. The ultimate aim of this work is to develop an on farm diagnostic tool that will allows producers to record accurate birthdates and improve the profitability of the beef industry through genetic gain for key traits.
This project will develop skills in bioinformatics and molecular biology. Students will learn how to design experiments, perform sequencing, and manage very large sequence data sets.
Supervision history
Current supervision
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Doctor Philosophy
Understanding the genomic variation of methane producing ruminants
Associate Advisor
Other advisors: Dr Seema Yadav, Dr Elizabeth Ross
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Doctor Philosophy
Stingless bee enzymes for biotransformation of cane sugar to a low GI sugar
Associate Advisor
Other advisors: Professor James De Voss, Emerita Professor Mary Fletcher, Dr Natasha Hungerford
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Doctor Philosophy
Stingless bee enzymes for biotransformation of cane sugar to a low GI sugar
Associate Advisor
Other advisors: Professor James De Voss, Emerita Professor Mary Fletcher, Dr Natasha Hungerford
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Doctor Philosophy
Assessing the effect of date fruit (Phoenix dactylifera L.) on human gut microbiota and metabolite production: an in vitro fermentation study
Associate Advisor
Other advisors: Dr Michael Netzel, Professor Yasmina Sultanbawa
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Doctor Philosophy
Developing genomic resources to enable better breeding decisions for Rufous bettongs, Aepyprymnus rufescens.
Associate Advisor
Other advisors: Dr Nick Hudson
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Doctor Philosophy
Bovine Immunity from Novel Protozoan Vaccines
Associate Advisor
Other advisors: Dr Hannah Siddle, Associate Professor Gry Boe-Hansen, Professor Ala Tabor
Completed supervision
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2023
Doctor Philosophy
The cellular and molecular foundations of antibody response kinetics and affinity maturation in giant grouper (Epinephelus lanceolatus)
Associate Advisor
Other advisors: Professor Andrew Barnes
Media
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