Chromosomes are structures that carry genes in all our cells. Every human cell has 46 chromosomes. In the nucleus of eukaryotic cells, DNA is highly folded and compacted with specific proteins into a dynamic polymer called chromatin. Gene expression, chromosome division, DNA replication, and repair all act, not on DNA alone, but on this chromatin template. The discovery that enzymes can (re)organise chromatin into accessible and inaccessible configurations revealed mechanisms that considerably e ....Chromosomes are structures that carry genes in all our cells. Every human cell has 46 chromosomes. In the nucleus of eukaryotic cells, DNA is highly folded and compacted with specific proteins into a dynamic polymer called chromatin. Gene expression, chromosome division, DNA replication, and repair all act, not on DNA alone, but on this chromatin template. The discovery that enzymes can (re)organise chromatin into accessible and inaccessible configurations revealed mechanisms that considerably extend the information potential of the genetic code. In addition, it is now established that chromatin structural features can influence gene expression. In vitro studies support a model in which chromatin functions as a barrier for the access to DNA. Therefore this organization has to be tighly regulated and dynamic to allow the protein-DNA interactions critical for nuclear functions. Importantly genome organisation provides in addition to genetic information another layer of information, so called epigenetic, which by definition means that it is stably inherited throughout cellular divisions, yet it is not encoded genetically. Thus each cell type will display a specific epigenome. We have recently constructed small human minichromosomes, which are much easier to study than the much larger normal chromosomes. The present project proposes to define the epigenetic feature across an entire human chromosome using our minichhromosomes as working models. The outcome will be a significant gain in our knowledge on the processes underlying epigenetic regulation, the organisation of specialised chromatin domain, and behaviour of the chromosomes.Read moreRead less
The Role And Inheritance Of Constitutional Epimutations In Early-onset Colorectal Cancer.
Funder
National Health and Medical Research Council
Funding Amount
$347,551.00
Summary
Traditionally familial cancers are thought to be caused by spelling mistakes within the genetic code of cancer prevention genes. Our group has found that chemical attachments to one gene (MLH1) stops it working, even where there is no spelling mistake, and that those chemical changes can be inherited in families with bowel cancer. We will determine how frequently this type of defect occurs in bowel cancer patients, how and why it arises, and if other cancer genes are similarly affected.
Epimutations As Germ-line Defects In Hereditary Cancer Syndromes
Funder
National Health and Medical Research Council
Funding Amount
$385,925.00
Summary
Traditionally familial cancers were thought to be caused and inherited by spelling mistakes within the genetic code of cancer prevention genes. Our group has found that a 'chemical coat' around the MLH1 gene, causing it to be switched off, can also be inherited in some cases of bowel cancer, without any mistakes within the gene's code. We will determine if this 'coat' causes other types of cancer and if this runs in families. We also hope to find out how the coat is formed and may be reversed.
Understanding And Overcoming Cardiovascular And Diabetes Inequalities In Indigenous Australians
Funder
National Health and Medical Research Council
Funding Amount
$707,370.00
Summary
Aboriginal and Torres Strait Islanders experience the highest rates of heart disease and diabetes of all Australians. The reasons for this large disparity is not yet fully understood. I propose to investigate the patterns, causes, complications and links between heart disease and diabetes in Indigenous populations to identify better ways of managing and preventing chronic disease in high risk communities.
Understanding The Impact Of Social, Economic And Geographic Disadvantage On The Health Of Australians In Mid - Later Lif
Funder
National Health and Medical Research Council
Funding Amount
$1,943,571.00
Summary
This research will examine the ways in which social, economic and environmental factors contribute to the health of Australians in mid to later life. It will help identify ways in which policy and preventive programs can contribute to improving health in mid to later life particularly among disadvantaged Australians. We will explore in detail social, economic and environmental factors in 100,000 people aged 45 and over; this will be the largest study of its kind ever undertaken in Australia. We ....This research will examine the ways in which social, economic and environmental factors contribute to the health of Australians in mid to later life. It will help identify ways in which policy and preventive programs can contribute to improving health in mid to later life particularly among disadvantaged Australians. We will explore in detail social, economic and environmental factors in 100,000 people aged 45 and over; this will be the largest study of its kind ever undertaken in Australia. We will examine the relationship between these social, economic factors, and lifestyle factors such as smoking, physical activity, environmental and obesity. This will enable us to identify where programs and policies should be directed to most rapidly improve the health of disadvantaged Australians.Read moreRead less
Ageing Well And Productively: Pathways To Healthy Workforce Participation And Caregiving.
Funder
National Health and Medical Research Council
Funding Amount
$143,660.00
Summary
Good health is vital to increase workforce participation,which enables us to pay for rising health care costs. This study will examine how socio-economic, behavioural, environmental and health-related factors impact on healthy workforce participation among older Australians. It will identify ways to prevent people having to retire early because of ill-health and will inform policy makers and health program developers about how best to maintain or increase a healthy workforce participation.
Which Mental Activities And When For Dementia Prevention? The Four Nations Longitudinal Collaboration
Funder
National Health and Medical Research Council
Funding Amount
$183,218.00
Summary
We will examine the link between lifetime participation in complex mental activities and long term dementia risk in a level of detail not previously possible. Four major studies of brain health from around the world will join forces for the first time to determine which mental activities are most closely linked to protection from dementia, and when during the lifespan these are most important. Mental activity will be assessed using our recently published Lifetime of Experiences Questionnaire.
Using Health Outcome Data From Pooled Longitudinal Studies Of Ageing To Develop Statistical And Microsimulation Models T
Funder
National Health and Medical Research Council
Funding Amount
$2,162,630.00
Summary
This project draws together data from nine Australian Longitudinal Studies of Ageing (LSAs), including 53484 participants, that will be used to identify factors capable of preventing disease, reducing ill-health, and promoting engaged and successful ageing for Australians. The focus is upon conditions that significantly contribute to the burden of disease including cognitive decline and dementia, sensory impairment, impairment in mobility and common mental disorders such as depression. Although ....This project draws together data from nine Australian Longitudinal Studies of Ageing (LSAs), including 53484 participants, that will be used to identify factors capable of preventing disease, reducing ill-health, and promoting engaged and successful ageing for Australians. The focus is upon conditions that significantly contribute to the burden of disease including cognitive decline and dementia, sensory impairment, impairment in mobility and common mental disorders such as depression. Although individual studies contain rich data on particular topics, there is only a small number of individuals in each study with specific medical conditions, or combinations of different conditions, especially at the older ages. Pooling data from nine studies will overcome this problem. This innovative and interdisciplinary study also involves development of the first Australian dynamic micro-simulation model of the health and social outcomes of the baby boomer and older cohorts. The simulation will allow for evaluation of the impact of modifying risk factors, and costs associated with different trajectories of health and ageing. Our program takes an interdisciplinary life course approach, incorporating interdependencies among demographic, behavioural, social, economic and health factors. Our multidisciplinary team and collaborative pooling of existing studies adds value and builds upon experience, as recommended in the Prime Minister's Science, Engineering and Innovation Council 2003 report. The outcomes will direct health and social policy to promote health behaviour, and social and medical interventions to compress morbidity and optimize healthy ageing in Australian society over the next 40 years.Read moreRead less
A Multi-setting Intervention To Reduce Sedentary Behaviour, Promote Physical Activity And Improve Childrens Health
Funder
National Health and Medical Research Council
Funding Amount
$860,343.00
Summary
Sedentary behaviours and physical inactivity play a major role in the rising prevalence of obesity among children in Australia. This intervention study will take place in the school and family settings which play a critical role in shaping children's health behaviours. The objective is to determine whether a 2-year behavioural intervention reduces sedentary behaviour and promotes physical activity and results in improved health among 8-9 year old children.
The Great Disruption of COVID-19: Re-imagining the work-family interface. This project aims to highlight new possibilities to re-imagine and reduce parents’ work-family conflicts. Covid-19 brought an unprecedented disruption to Australian parents' work-care routines, with different effects for women, and those working ‘at work’ versus at home. Using mixed-methods approaches and multiple Australian datasets collected pre- and post-pandemic, this unique project intends to identify families who are ....The Great Disruption of COVID-19: Re-imagining the work-family interface. This project aims to highlight new possibilities to re-imagine and reduce parents’ work-family conflicts. Covid-19 brought an unprecedented disruption to Australian parents' work-care routines, with different effects for women, and those working ‘at work’ versus at home. Using mixed-methods approaches and multiple Australian datasets collected pre- and post-pandemic, this unique project intends to identify families who are at risk of longer-term scarring to family wellbeing from work-care conflicts; and critical workplace supports which may prevent this. Together, this urgently-needed evidence contributes to family-friendly work for diverse parents, employers and policy, protecting social and economic participation for Australian parents.Read moreRead less