Novel Approach And Insights Into Muscle Stem Cell Transplantation
Funder
National Health and Medical Research Council
Funding Amount
$642,401.00
Summary
The successful use of stem cell therapy absolutely requires the longterm intergration of the therapeutic cells into the target tissue. This application will adapt a chemotherapy-based strategy to drive the successful incorporation and growth of healthy muscle stem cells into diseased muscle. This study will both enhance our understanding of muscle stem cells and provide proof-of-principle for a universal approach to the uptake of stem cells by a target tissue.
IGF-1 AS A THERAPEUTIC AGENT: HOW DOES IGF-1 AFFECT OXIDATIVE STRESS IN DYSTROPHIC AND AGED SKELETAL MUSCLE?
Funder
National Health and Medical Research Council
Funding Amount
$545,243.00
Summary
Loss of skeletal muscle mass (wasting) and function occurs in many clinical conditions, including muscular dystrophy, neuromuscular and inflammatory disorders, and also normal ageing. A growth factor (IGF-1) is a promising therapeutic as it increases protein synthesis. Muscle wasting (loss of protein) is also associated with increased oxidative stress. The project will evaluate the impact of IGF-1 on oxidative stress using genetically engineered mouse models of muscular dystrophy and ageing.
Clarifying Molecular Role Of IGF-1:Ea Isoforms In Skeletal Muscle Hypertrophy And Atrophy
Funder
National Health and Medical Research Council
Funding Amount
$394,718.00
Summary
The growth factor IGF-1 is proposed as a therapeutic agent to increase muscle mass and to reduce muscle wasting resulting from denervation, disuse, ageing and dystrophy. Understanding the precise mechanisms of IGF-1 action is essential for the potential therapeutic use of this factor. This research is focused on the molecular role of IGF-1 in healthy muscle and in the conditions of muscle wasting and degeneration.
The Molecular Mechanisms Of Anabolic Androgen Actions In Skeletal Muscle
Funder
National Health and Medical Research Council
Funding Amount
$487,500.00
Summary
We are studying the role of male sex hormones, androgens, in controlling muscle function. Muscle wasting occurs in a variety of disorders, including cancer, burns and trauma, and also during normal ageing. Treatment with androgens helps prevent muscle wasting, and causes increased muscle size, although current therapies can also have side effects. Little is known about how androgens prevent wasting and promote muscle growth. Therefore, we propose to study the actions of male sex hormones in musc ....We are studying the role of male sex hormones, androgens, in controlling muscle function. Muscle wasting occurs in a variety of disorders, including cancer, burns and trauma, and also during normal ageing. Treatment with androgens helps prevent muscle wasting, and causes increased muscle size, although current therapies can also have side effects. Little is known about how androgens prevent wasting and promote muscle growth. Therefore, we propose to study the actions of male sex hormones in muscle. We will study the growth of mouse muscle cells in culture, and measure their rate of growth when treated with androgens. All cells contain certain factors that control their growth and replication, and we will test whether androgens activate these factors to increase growth. We will also study the effect of androgens on muscle in mice, to investigate complex effects that only occur in real muscle. We will neuter male mice, which causes muscle wasting. Neutered mice will then be treated with androgens or placebo, and we will compare the muscle growth effect of androgen treatment versus placebo. We will measure muscle strength, size, and the number of muscle cells in treated and placebo mice. We will also see if the effects of androgen require a particular protein, the androgen receptor, which acts as a lock-key mechanism in cells, to allow them to respond to androgens. We will make a strain of mouse with a non-functional version of the androgen receptor only in muscle cells. This will determine if the muscle growth effects of androgens occur through a direct action on muscle, or indirectly through acting on other tissues in the body. This information will ultimately allow us to design more targeted androgen therapies for muscle wasting, that act only on muscle.Read moreRead less
Immunological Changes During Pregnancy And The Impact On Viral Hepatitis Infection
Funder
National Health and Medical Research Council
Funding Amount
$353,355.00
Summary
Hepatitis B virus (HBV) can cause long term health problems particularly affecting the liver and can be passed from mother to baby. Despite the availability of a HBV vaccine babies can still become infected. During pregnancy there are changes in a woman’s immune system which may impact on HBV infection and make transmission to the baby more likely. This research aims to explore the changes in a woman’s immune system and the impact this has on risks for hepatitis and transmission to the baby.