Chronic or extreme reactions to stress can lead to pathological conditions such as long term anxiety states, depression and panic disorders. Stress related disease also contributes to other major health problems such as heart disease and disorders of the immune system. These disease states include some of the major medical problems of our times. This proposal is to define genes which may be involved in stress responsiveness, to further understand and treat stress related disease.
I work on mitochondrial diseases, which are inherited disorders of metabolism that block conversion of food energy into chemical energy needed by our cells. We focus on understanding (i) the genetic basis of these disorders using approaches such as massively parallel sequencing, systems biology and experimental studies, and (ii) the detailed mechanisms of disease by studying cell lines from patients and animal models. We aim to develop better methods for diagnosis, treatment and prevention.
Genetic Analysis Of Migraine And Comorbid Psychiatric Disorders Using Twin Families
Funder
National Health and Medical Research Council
Funding Amount
$554,450.00
Summary
Typical migraine, is a frequent, debilitating and painful disorder that normally affects people during their most productive years (up to 25% of females and 7.5% of males in Western populations). Additionally, several studies have demonstrated a cross-sectional relation between psychiatric disorders (namely anxiety and depression) and migraine in community samples. The World Health Organization (WHO) recently identified migraine and major depression among the world's top 20 leading causes of dis ....Typical migraine, is a frequent, debilitating and painful disorder that normally affects people during their most productive years (up to 25% of females and 7.5% of males in Western populations). Additionally, several studies have demonstrated a cross-sectional relation between psychiatric disorders (namely anxiety and depression) and migraine in community samples. The World Health Organization (WHO) recently identified migraine and major depression among the world's top 20 leading causes of disability, with an impact that extends far past the suffering individual, to the family and community. In both sexes of all ages, depression and migraine are the 1st and 19th leading causes of disability affected life years. Although both migraine and depression are highly prevalent in our society, their aetiologies remain relatively obscure and there are no laboratory based diagnostic tests that identify those who suffer from the disorders. Because so little is known about them, a positional cloning approach is the only feasible way to identify the molecular mechanisms underlying these disorders. This project will collect a sample with sufficient power to perform a genome wide linkage screen to i) identify novel susceptibility genes, and ii) confirm previously reported susceptibility genes for migraine and co-occurring psychiatric disorders. The susceptibility genes identified (and confirmed) in this sample will provide clues to the further elucidation of the complex molecular pathways of migraine (and co-occurring psychiatric disorders) and, finally, will help in the development of diagnostic tests and rational treatment strategies.Read moreRead less
Novel Gene Identification And Characterisation In Epilepsy.
Funder
National Health and Medical Research Council
Funding Amount
$303,964.00
Summary
Epilepsy is a serious neurological disorder affecting up to 5% of the population at some point in their lives. Approximately 70% cases of epilepsy are genetic, but very few of the genes involved have been identified. This project will use state-of-the-art techniques to identify genetic mutations causing an inherited form epilepsy affecting infants. This research is expected to reveal new gene families involved in the genesis of epilepsy and thus new targets for the development of treatments.
The Role Of The Neuronal Splicing Factor A2BP1 In Autism Spectrum Disorders
Funder
National Health and Medical Research Council
Funding Amount
$396,412.00
Summary
Autism spectrum disorders (ASD) are characterized by language deficits, social impairments and repetitive-restrictive behaviors. ASD is one of the most highly heritable neuropsychiatric conditions, and at the same time genetically very heterogeneous. We have recently shown that shared gene expression abnormalities can be identified in postmortem brain from ASD patients. We now propose to investigate the mechanisms and functional consequences of gene expression abnormalities in ASD.
Investigating The Pathogenic Mechanism Of Mutations In IQSEC2 Causing Non-syndromic Intellectual Disability.
Funder
National Health and Medical Research Council
Funding Amount
$449,016.00
Summary
Intellectual disability is frequent in the population, as many as 1 in every 50 people in the world affected. Mutations in IQSEC2, an X-chromosome gene, cause intellectual disability. We will screen 1000 families with this disability for mutations in IQSEC2, building the picture of disease symptoms, contributing to informed genetic counselling. We will investigate functional impacts of these mutations in neuronal cultures, increasing our understanding of the causes of intellectual disability.
Approaches To Therapy For The Skeletal Muscle Actin Diseases
Funder
National Health and Medical Research Council
Funding Amount
$912,078.00
Summary
We have shown that errors in a crucial muscle protein called actin cause muscle diseases that affect newborn children. These diseases are mainly very severe, causing death within the first year of life. Currently there is no cure. This project will investigate possible therapies for these diseases, such as viral delivery of a normal version of actin and finding a drug to overcome the weakness. Successful outcomes will crucially bring treatment closer for the patients.
Elucidating the neural pathways and genetic basis of speech. The project will elucidate the biological basis of speech, a unique feature of the human condition. The project will do this by i) discovering genes associated with speech disorder and ii) defining the neural pathways associated with speech production. This study will address critical questions regarding gene, brain and behaviour relationships in speech.
Viral Therapy For Skeletal Muscle Alpha-actin Disease And Discovery Of Novel Neuromuscular Disease Genes And Mechanisms
Funder
National Health and Medical Research Council
Funding Amount
$324,028.00
Summary
This research project is the next logical step towards treating patients with skeletal muscle actin disease - using viral delivery of normal actin genes in animal models of actin disease. Another arm of this project is to investigate the genetics and mechanisms causing two very different groups of muscle disorders in the Australian population: devastating muscle weakness in the foetal akinesias and enhanced muscle strength and bulk in individuals with strongman syndromes.
Transforming The Diagnosis Of Mitochondrial Disorders Using High-throughput Sequencing, Functional Prediction And Experimental Validation
Funder
National Health and Medical Research Council
Funding Amount
$670,794.00
Summary
The human genome project sparked enormous improvements in our ability to sequence DNA. “Next Generation” DNA sequencing can potentially sequence an individual’s entire genome in a week and has the ability to transform the diagnosis of inherited diseases but is as yet unproven in a medical genetics context. We will develop and validate the use of Next Generation sequencing to enable the rapid sequencing of over 1000 genes in which mutations cause inherited metabolic diseases.