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Characterising An Important Control Point In Cholesterol Synthesis Beyond HMG-CoA Reductase
Funder
National Health and Medical Research Council
Funding Amount
$480,739.00
Summary
The statins are the ‘go-to’ drugs for treating heart disease; blocking a very early, highly-controlled step in the pathway producing cholesterol. However, they inhibit the production of other vital molecules which explains why some patients do not tolerate them. We have identified that a later enzyme in this pathway is also highly controlled and here aim to characterise the molecular mechanisms involved. This work could translate into the development of even safer drugs for treating cholesterol- ....The statins are the ‘go-to’ drugs for treating heart disease; blocking a very early, highly-controlled step in the pathway producing cholesterol. However, they inhibit the production of other vital molecules which explains why some patients do not tolerate them. We have identified that a later enzyme in this pathway is also highly controlled and here aim to characterise the molecular mechanisms involved. This work could translate into the development of even safer drugs for treating cholesterol-related diseases.Read moreRead less
Physiological Function Of Nedd4-2 In Regulating The Epithelial Sodium Channel
Funder
National Health and Medical Research Council
Funding Amount
$805,797.00
Summary
The epithelial sodium channel (ENaC) controls sodium balance, blood volume and blood pressure. Abnormal regulation of ENaC is associated with conditions such as hypertension and pulmonary oedema. Delineating the regulation of ENaC is vital in understanding disease mechanisms and in defining targets for novel therapeutics for the treatment of disorders that arise due to sodium imbalance. This grant will enable us to understand how ENaC is regulated by a novel protein known as Nedd4-2.
Mechanisms Of Oxidised Protein Accumulation In Ageing Cells
Funder
National Health and Medical Research Council
Funding Amount
$429,000.00
Summary
Australia has one of the world's most rapidly ageing populations. It is estimated that in 30 years time over 30% of the population will be over 65; many will suffer from a debilitating, age-related disease. The diseases of ageing represent one of the major health challenges this century. Despite their increasing incidence, our understanding of the underlying causes is limited. A common feature is the accumulation of damaged proteins in cells and tissues. Damaged proteins are usually broken down ....Australia has one of the world's most rapidly ageing populations. It is estimated that in 30 years time over 30% of the population will be over 65; many will suffer from a debilitating, age-related disease. The diseases of ageing represent one of the major health challenges this century. Despite their increasing incidence, our understanding of the underlying causes is limited. A common feature is the accumulation of damaged proteins in cells and tissues. Damaged proteins are usually broken down by the cells and replaced, but in many age-related diseases this process fails. The most common source of protein damage is attack by oxygen-derived free radicals. These are by-products of our body's need for oxygen and can originate from atmospheric pollutants. Oxygen rusts metal, makes fat go rancid and can cause irreparable damage to proteins and other biological molecules. Free radical damage contributes to the development of many age-related diseases such as atherosclerosis and neurodegenerative diseases such as Alzheimer's disease. The accumulation of damaged proteins can cause cell death. Our knowledge of the mechanisms by which cells remove proteins damaged by oxygen and the reasons for their accumulation is limited. In this project we will use a novel technique we have developed to generate oxidised proteins in ageing cells. We will identify cellular mechanisms required for the efficient removal of damaged proteins and those mechanisms which fail in ageing cells. We will focus on a group of proteins which protect damaged proteins from aggregating and accumulating and we will examine how we can prevent the accumulation of oxidised proteins by stimulating the body s defence mechanisms. Since the population of Australia is ageing, diseases of ageing are going to consume an increasing amount of the national health budget. A better knowledge of these cellular mechanisms will allow us to design effective prevention and treatment strategies which are at present lacking.Read moreRead less