I am a molecular-cell biologist investigating the genetic control of lymphocyte differentiation. I study the mechanisms of action of transcription factors expressed specifically in B cells that regulate B lymphocyte specialisation and function, that determine the ability of mature B cells to respond to signals from other cells or from invading pathogens, and that enable the differentiation of antibody-secreting cells, the effectors of the B cell lineage. I lead the commercialisation efforts of o ....I am a molecular-cell biologist investigating the genetic control of lymphocyte differentiation. I study the mechanisms of action of transcription factors expressed specifically in B cells that regulate B lymphocyte specialisation and function, that determine the ability of mature B cells to respond to signals from other cells or from invading pathogens, and that enable the differentiation of antibody-secreting cells, the effectors of the B cell lineage. I lead the commercialisation efforts of our research Program.Read moreRead less
Epilepsy is an important human disease because it causes physical trauma and sudden death in addition to immense social and economic hardship. The genetic basis of a number of epilepsy syndromes has been identified but the precise mechanism whereby mutations produce seizures is unknown. Several mutations in the alpha4 neuronal nicotinic receptor (a4 nAChR) gene have been identified in Autosomal Dominant Nocturnal Frontal Lobe Epilepsy (ADNFLE). This is a rare form of inherited epilepsy character ....Epilepsy is an important human disease because it causes physical trauma and sudden death in addition to immense social and economic hardship. The genetic basis of a number of epilepsy syndromes has been identified but the precise mechanism whereby mutations produce seizures is unknown. Several mutations in the alpha4 neuronal nicotinic receptor (a4 nAChR) gene have been identified in Autosomal Dominant Nocturnal Frontal Lobe Epilepsy (ADNFLE). This is a rare form of inherited epilepsy characterized by the presence of seizures during light sleep. In vitro studies using the human mutated DNA (i.e. DNA containing the genetic defect) have suggested that this mutation results in reduced activity of the receptor. Therefore a mouse in which this gene is destroyed would be relevant in understanding the human disease. We have generated an a4 nAChR knockout (KO) mouse and plan to use the mouse to test the idea that loss of function of the a4 nAChR in vivo is associated with enhanced seizure activity. The KO mice do not have unprovoked seizures but appear to have an increased number of major motor seizures in response to pentylenetetrazole, an agent which is known to cause seizures by blocking the effects of the brain inhibitory molecule GABA. Interestingly, a4 nAChRs are known to control the release of GABA. We therefore propose that our knockout mice have seizures because they tend to under produce GABA. We will also make and analyse a mouse line with the same genetic mutation as patients with ADNFLE. The experiments are aimed at understanding the way that seizures are generated and spread in the brain in these rare forms of epilepsy. The hope is that understanding these mechanisms will help us better understand and therefore treat common forms of epilepsy.Read moreRead less
Progesterone Receptor-mediated Coordination Of Oocyte-oviduct Communication During Ovulation
Funder
National Health and Medical Research Council
Funding Amount
$86,128.00
Summary
Infertility affects 1 in 6 couples, often due to failed release of an egg from the ovary. The hormone progesterone is essential for this process. Our goal is to determine how progesterone signals the egg to ensure its correct release into the oviduct where fertilization may occur. To identify these signals, experiments will analyse ovary cells and eggs of mice, including mice that do not respond to progesterone. The results will provide much needed information about female reproductive health.
Therapeutic Potential Of The Dipeptidyl Peptidase IV Gene Family
Funder
National Health and Medical Research Council
Funding Amount
$478,067.00
Summary
We will further investigate the therapeutic potential of the Dipeptidyl Peptidase (DP) IV gene family by studying genes identified as probable therapeutic targets for stem cell transplant, anti-inflammatory and cancer therapies. DPIV is an identified target for diabetes therapy. Our research group is internationally recognised as expert in both liver disease pathogenesis and the DPIV gene family.