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Dr Dhanisha Jhaveri has a joint appointment at Mater Research and the Queensland Brain Institute (QBI) and is a Mater Foundation Senior Research Fellow and a Group Leader. Dhanisha’s research group is investigating the fundamental mechanisms that drive the renewal of neurons in the adult brain, with the goal of harnessing this form of neural plasticity to relieve the emotional and cognitive burdens associated with chronic stress and depression.

Dhanisha received her PhD from the Tata Institute of Fundamental Research (TIFR), India, under the supervision of Professor Veronica Rodrigues, where she unravelled the molecular mechanisms that wire the olfactory axons in the fly (Drosophila) brain. In recognition of her doctoral work she was awarded the Indian National Science Academy medal for Young Scientist of the Year in 2003. Fascinated by the discovery that the production of new neurons continues in the adult brain, she then joined the laboratory of Professor Perry Bartlett at the Queensland Brain Institute as a Human Frontiers Science Program Postdoctoral Fellow. She has made major discoveries that have transformed our understanding of the regulation and roles of neural stem cells in the adult brain. Her work uncovered that a subclass clinical antidepressants directly activates neural stem cells in the hippocampus, a brain region implicated in regulating mood and cognitive functions. She also pioneered the development of a new cell sorting protocol to purify neural stem cells which revealed presence of distinct stem cell populations in this brain region.

Cognitive and decision-making problems associated with psychotic disorders like schizophrenia are considered the largest burden for these individuals. They also predict poor functional outcomes, such as maintaining work, social networks, and independent living. I am particularly interested in the relationship between decision-making problems and psychotic symptoms in these disorders; will improving decision-making also reduce psychotic symptoms? To that end, I focus on decision-making tasks that are reliant on brain areas and networks that are implicated in psychosis.

My work aims to understand how corticostriatal circuitry drives decision-making processes, and how this is altered in those with schizophrenia and psychosis. I have taken advantage of my collaborations with basic scientists and clinical researchers with a broad range of expertise to establish a cross-species program of research focussed on decision-making. My research is guided by two fundamental questions:

1. Do decision-making problems in schizophrenia and other psychotic disorders contribute to psychotic symptoms?
2. How can we leverage the mechanistic tools available in rodent neuroscience to identify causative common substrates underlying decision-making problems (and by proxy psychotic symptoms)?

Megan O’Mara is a Professor and Group Leader at the Australian Institute for Bioengineering and Nanotechnology (AIBN), UQ. Her group uses multiscale modelling techniques to understand how changes in the biochemical environment of the cell membranes alters membrane properties and modulates the function of membrane proteins. She has research interests in multidrug resistance, computational drug design and delivery, biopolymers, and personalized medicine. Megan completed her PhD in biophysics at the Australian National University in 2005 before moving to the University of Calgary, Canada, to take up a Canadian Institutes of Health Research Postdoctoral Fellowship. In 2009, she returned to Australia to join University of Queensland’s School of Chemistry and Molecular Biosciences as a UQ Postdoctoral Fellow, before commencing an ARC DECRA in 2012 where she continued her computational work on membrane protein dynamics. In 2015, Megan joined the Research School of Chemistry, Australian National University in 2015 as Rita Cornforth Fellow and Senior Lecturer. In 2019 she was promoted to Associate Professor and was Associate Director (Education) of the Research School of Chemistry ANU in 2019-2021. In April 2022 she relocated to AIBN.

I received my Bachelor's in Biology (2001) from Yarmouk University in Jordan, followed by postgraduate degrees from the University of Houston in Houston-Texas (2002-2007). My studies are integrative in nature, joining the best of both the Neuroscience world and Circadian Biology (the study of biological clocks). In the laboratory of Prof. Arnold Eskin, I investigated how processes as complex as learning and memory are modulated by biological clocks i.e. the circadian (about 24 hours) system, using Aplysia californica as the experimental model. After completing my Master's in Science in 2005, my research focused on the mechanism by which biological clocks modulate learning and memory. This work was performed in the laboratories of Prof. Gregg Cahill and Prof. Greg Roman, experts in chronobiology and behavioral neuroscience, respectively. Using Zebrafish as a model system, I investigated the role of melatonin, a night-time restricted hormonal signal, in modulating long-term memory consolidation. My findings, published in Science in 2007, shows that the circadian system via the cyclic night-time confined synthesis/release of melatonin “the hormone of darkness” functions as a modulator, shaping daily variations in the efficiency by which memories are processed. After receiving my Ph.D. in 2007, I joined as a postdoctoral fellow the laboratory of the pharmacologist and melatonin researcher Prof. Margarita Dubocovich. My postdoctoral work engaged in elucidating the role of melatonin in circadian physiology and pharmacology during development and ageing in rodents (Mus musculus) and non-human primates (Macaca mulatta) at the Feinberg School of Medicine (Northwestern University-Chicago) and the State University of New York (SUNY). From 2010-2015, I held a teaching/research position in the Dr. Senckenbergische Anatomy and the Dept. of Neurology at the Goethe University in Frankfurt-Germany. During this time, I was involved in teaching gross human anatomy while continuing my endeavor in understanding the mechanistics involved in shaping memory processes (acquisition, consolidation and retrieval) by the circadian system.

I am an early career neuroscientist investigating the capacity for neural progenitor cell behaviour to shape neural circuit formation, maintenance and function during development and throughout adulthood. More specifically, the role of oligodendrocyte progenitors and myelin in brain circuit formation and maintenance. My research examines the brain under health and pathological conditions by performing manipulations relevant to autism spectrum disorder, multiple sclerosis and schizophrenia. While under the supervision of Prof Helen Cooper at the Queensland Brain Institute – University of Queensland - I studied how the WRC-Cyfip1-FMRP protein network impaired apical radial glial progenitor function and neural migration, leading to cortical malformation and Autism-like traits in mice. During my PhD at University of Tasmania and under the supervision of Prof Kaylene Young, I studied the effect of neuronal activity on cells of the oligodendrocyte lineage. I found that voltage-gated calcium channels are critical for oligodendrocyte progenitor cell survival and characterised the impact of kainite receptor dysfunction on neuropathology and behaviour in mice. Currently under the supervision of Dr Carlie Cullen I am using transgenic mice strategies to determine how aberrant myelination can contribute to onset of neuropsychiatric and neurodegenerative disorders. I am also using mouse models of demyelination to investigate the effect of infectious diseases such as COVID19 and influenza on oligodendrocyte lineage cell function and the impact for myelin repair and multiple sclerosis disease progression. I have a long-standing interest in neuroscience research, that extends from understanding how brain function is regulated during development and in healthy ageing, and the dysregulated signalling pathways that enable neurodevelopmental and neurodegenerative disorders.

Dr Adam Walker received his BSc(Hons) in Biochemistry from the University of Tasmania, and PhD in Neuroscience from the Florey Institute of Neuroscience and Mental Health at the University of Melbourne, focused on understanding the molecular mechanisms of motor neuron disease (MND). He undertook a postdoctoral fellowship with Professor Virginia Lee at the Center for Neurodegenerative Disease Research, University of Pennsylvania (2011-2015), developing new transgenic TDP-43 mouse models of disease. Dr Walker was previously an NHMRC CJ Martin Overseas Biomedical Research Fellow and was awarded an NHMRC RD Wright Career Development Fellowship (2018-2022), to continue his research on neurodegenerative diseases. His research has been supported by fellowships and project grants from the Australian National Health and Medical Research Council, the Australian National Foundation for Medical Research and Innovation, Dementia Australia, Motor Neuron Disease Research Institute of Australia, MonSTaR Foundation and the Cure for MND Foundation.

My research interests are centred around the structure and function of venom and silk polypeptides produced by arthropods, and their use in biotechnology and medicine. I am a Postdoctoral Fellow in the King laboratory in the Institute for Molecular Bioscience, the University of Queensland, Australia. Currently, I am investigating the composition, function and evolution of neglected insect venoms produced by assassin bugs (Hemiptera: Reduviidae), robber flies (Diptera: Asilidae) and nettle caterpillars (Lepidoptera: Limacodidae).