Recognising And Improving Management Outcomes Of Adult Patients With Mitochondrial Diseases
Funder
National Health and Medical Research Council
Funding Amount
$87,199.00
Summary
Mitochondrial diseases comprise the most common diagnostic group amongst neuromuscular and neurogenetic diseases, but are not well known in the community, with no established standards of management. The Study aims to devise strategies to deliver better care for patients with mitochondrial diseases, from their screening and diagnosis, continued monitoring and prognostication, to the potential treatment and promotion of a better management paradigm; as well as facilitation of ongoing research int ....Mitochondrial diseases comprise the most common diagnostic group amongst neuromuscular and neurogenetic diseases, but are not well known in the community, with no established standards of management. The Study aims to devise strategies to deliver better care for patients with mitochondrial diseases, from their screening and diagnosis, continued monitoring and prognostication, to the potential treatment and promotion of a better management paradigm; as well as facilitation of ongoing research into the management of patients with these diseases.Read moreRead less
A Cohorts-based Approach To Define Monogenic Causes Of Mitochondrial Disease
Funder
National Health and Medical Research Council
Funding Amount
$824,841.00
Summary
New genomic technologies are transitioning from research to being used for routine genetic diagnosis. Rare diseases have been proposed to be one of the key beneficiaries of this translation. Collectively, rare diseases affect 6-8% of the population or ~20,000 births each year in Australia, mostly with serious health implications. Our study addresses the technical, bioinformatic and corroborative challenges needed for accurate diagnosis of a large group of rare diseases.
Systems Approaches To Understanding Mitochondrial Function And Dysfunction In Disease
Funder
National Health and Medical Research Council
Funding Amount
$431,000.00
Summary
Mitochondria produce the energy for our bodies. Defects in this process cause mitochondrial disease, which affects at least 1/4300 people. Diagnosis is often inconclusive and few if any effective treatments exist. State of the art CRISPR gene-editing tools will be used to make disease models mimicking the different types of mitochondrial disease. These will be used to understand how mitochondria function, identify new disease genes and develop new drugs.
Gene Discovery And Functional Studies To Reveal Mechanisms Underlying Mitochondrial Respiratory Chain Disorders.
Funder
National Health and Medical Research Council
Funding Amount
$381,343.00
Summary
Mitochondrial respiratory chain disorders are a devastating group of disorders, potentially affecting any organ of the body, with no effective therapies currently available. The majority of these disorders have a childhood onset and the genetic basis for most of them is unknown. Identification of the genes responsible for these disorders in specific families would greatly improve the accuracy and usefulness of genetic counselling, and an understanding of their biology may assist the development ....Mitochondrial respiratory chain disorders are a devastating group of disorders, potentially affecting any organ of the body, with no effective therapies currently available. The majority of these disorders have a childhood onset and the genetic basis for most of them is unknown. Identification of the genes responsible for these disorders in specific families would greatly improve the accuracy and usefulness of genetic counselling, and an understanding of their biology may assist the development of effective therapies.Read moreRead less
Neurologic Effects Of Mutational Load In MELAS Syndrome
Funder
National Health and Medical Research Council
Funding Amount
$505,786.00
Summary
This project will use a new stem cell model to discover what happens to brain cells in patients with the MELAS 3243A>G mutation, a common genetic mutation found in 1-500 Australians. Brain cells will be grown from our stem cell model and used to find out how this mutation causes problems in the affected brain cells. We will find out what happens to the brain when the amount of mutation is reduced in vitro. By understanding what happens, we will be able to design new treatments for this disord ....This project will use a new stem cell model to discover what happens to brain cells in patients with the MELAS 3243A>G mutation, a common genetic mutation found in 1-500 Australians. Brain cells will be grown from our stem cell model and used to find out how this mutation causes problems in the affected brain cells. We will find out what happens to the brain when the amount of mutation is reduced in vitro. By understanding what happens, we will be able to design new treatments for this disorder.Read moreRead less
Clinical Features, Neurophysiology And Histopathology Of Peripheral Neuropathy In Children With Mitochondrial Disease
Funder
National Health and Medical Research Council
Funding Amount
$56,200.00
Summary
Peripheral neuropathies are frequently associated with mitochondrial diseases in children and cause progressive weakness and gait abnormalities and could result in loss of ambulation. This study aims to characterise the clinical spectrum and range of electrophysiological and histopathological abnormalities in the peripheral nerves of children with mitochondrial neuropathies to provide a resource that enables early diagnosis and implementation of rehabilitative measures.
I am a biochemical geneticist working on the genetics and pathogenesis of mitochondrial energy generation disorders. I have a particular focus on the severe mitochondrial diseases of childhood but am also studying mitochondrial involvement in common disor
Defining The Genomic Basis Of Mitochondrial Complex I Deficiency
Funder
National Health and Medical Research Council
Funding Amount
$639,682.00
Summary
The human genome project led to new technologies that will revolutionise genetic testing. Previously, we could only sequence genes one at a time. Next Generation sequencing allows analysis of hundreds or thousands of genes simultaneously. We will analyse 90 genes in 100 children with severe disorders of mitochondrial energy generation. This will provide proof of principle for the introduction of this technology into routine medical testing and identify new genes causing these diseases.
Genetic Variation Of Mitochondrial Complex I: Its Role In Rare And Common Diseases
Funder
National Health and Medical Research Council
Funding Amount
$628,415.00
Summary
Our bodies convert food into energy in tiny cellular power plants called mitochondria. Each year about 50 Australian children inherit disorders of mitochondrial energy generation. The most severe disorders cause infant death, while others cause degenerative diseases in later life, particularly affecting brain and muscle. In most cases we lack effective treatments. The genetic causes of mitochondrial disorders are incredibly diverse, with over 70 disease genes known. Some are located on the uniqu ....Our bodies convert food into energy in tiny cellular power plants called mitochondria. Each year about 50 Australian children inherit disorders of mitochondrial energy generation. The most severe disorders cause infant death, while others cause degenerative diseases in later life, particularly affecting brain and muscle. In most cases we lack effective treatments. The genetic causes of mitochondrial disorders are incredibly diverse, with over 70 disease genes known. Some are located on the unique mitochondrial DNA we inherit only from our mothers. Many more genes await discovery. This grant focuses on the most common energy generation disorder, known as Complex I deficiency. Complex I requires 46 separate components to be assembled together in order to work properly, but mutations in the 46 genes encoding these components only seem to explain disease in about half of all patients. Our aim is to identify new disease genes and to determine whether some patients have mutations in two different genes that interact to cause disease, rather than in a single gene. We will use a number of methods to pinpoint where in the genome the causative genes are located and then home in on the exact changes in the genes that cause disease. Identifying these genes will allow us to improve future diagnosis and prevention of mitochondrial disease. We will also generate mice in which one of the Complex I genes has been knocked out. These mice will allow us to better understand the basic disease mechanisms that link gene changes to disease. Understanding the basic biology may allow us to develop new methods of treatment. The mouse models will also be useful for trialling new treatments and for investigating the role of milder mitochondrial problems in common diseases such as diabetes and Parkinson disease. Any new treatments could potentially have wide application.Read moreRead less
Carolyn Sue is a neurologist and scientist investigating the role of disturbed mitochondrial function in human disease. Mitochondria play a key role in maintaining energy levels and the cell’s health. When this function is impaired, cells may degenerate or die, and thus cause human disease. Dr Sue’s research is aimed at seeking improved treatments to treat mitochondrial disease and to further understanding about how brain cells degenerate when the mitochondria fail.