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Growth Factors And Regulatory Genes Controlling Male Spermatogonial Proliferation And Differentiation.
Funder
National Health and Medical Research Council
Funding Amount
$354,536.00
Summary
In newborn and prepubertal boys the testis contains germ cells which are at a premature stage of development and very suseptible to degeneration especially if the testes fail to descend to the scrotum. The molecules which are responsible for the health of these germ cells have been unknown and only recently the way has been opened for direct study of these factors. This has been made possible by a new assay, developed in our labarotory, in which we can grow these germ cells under defined conditi ....In newborn and prepubertal boys the testis contains germ cells which are at a premature stage of development and very suseptible to degeneration especially if the testes fail to descend to the scrotum. The molecules which are responsible for the health of these germ cells have been unknown and only recently the way has been opened for direct study of these factors. This has been made possible by a new assay, developed in our labarotory, in which we can grow these germ cells under defined conditions. This step forward has highlighted some areas of knowledge which need further research such as identification of the processes which stimulate gonocytes to grow and divide. We need to test growth factors, somatic cell factors and also isolate new genes which are associated with germ cells and their growth. This knowledge will have outcomes in two major areas. First, the new findings could be applied to treatment of infertility resulting from undescended testes in which a stimulus could be given to make the germ cells grow again. Second, work in developing longer term culture of germ cells coupled with introduction of mutations will enable us to make mutant mice with a specific gene abnormality, similar to transgenic or gene knockout mice. This technological development would prove less expensive and time consuming with more reproducible and direct outcomes. Mutant mouse technology is a powerful tool to determine the effects of individual genes in the whole animal (mouse).Read moreRead less
This study is aiming to develop an unique mouse model in which to study the question whether testosterone plays an essential role in female reproductive and general health. It will develop a genetic mouse model for a biological state of complete resistance to the effects of androgens. Such mice and humans are well known among genetic males but this cannot occur naturally among genetic female mammals. By creating such a mouse line, this project will be able to test for the first time indetail whe ....This study is aiming to develop an unique mouse model in which to study the question whether testosterone plays an essential role in female reproductive and general health. It will develop a genetic mouse model for a biological state of complete resistance to the effects of androgens. Such mice and humans are well known among genetic males but this cannot occur naturally among genetic female mammals. By creating such a mouse line, this project will be able to test for the first time indetail whether testosterone has an impotant role in the development and function of the ovary and of other female tissues such as bone, muscle and the brain.Read moreRead less
I am a basic scientist with an interest in the cellular biology of the ovary, and the roles of the matrix between cells of the ovary in controlling fertility and hormone synthesis.
Glucose, Glucose Transporters And Blastocyst Formation In The Mouse
Funder
National Health and Medical Research Council
Funding Amount
$281,650.00
Summary
Embryo-based biotechnologies have the potential to improve human reproductive health, notably in treating infertility by In vitro fertilisation (IVF). They are also central to the future use of embryonic stem cells for human tissue replacement. This project investigates the molecular mechanisms controlling one of the earliest differentiations in the growth of the embryo. Using the mouse as an experimental model it will investigate the importance of several factors in the changes which set up the ....Embryo-based biotechnologies have the potential to improve human reproductive health, notably in treating infertility by In vitro fertilisation (IVF). They are also central to the future use of embryonic stem cells for human tissue replacement. This project investigates the molecular mechanisms controlling one of the earliest differentiations in the growth of the embryo. Using the mouse as an experimental model it will investigate the importance of several factors in the changes which set up the placenta and fetus as seperate tissues in the very early embryo. A key focus is the supply of glucose to the newly fertilised embryo and how important this glucose supply is for the survival of the embryo. Moreover there is great interest in the possibility that metabolic events in utero can contribute to the development of diseases in later life, notably, coronary heart diease, stroke, high blood pressure and non-insulin dependent diabetes. The results from these studies will contribute to our understanding of why some couples are infertile, lead to improved management of infertility by diet and invitro fertilisation procedures. It will also be of benefit in dietary advice to women with diabetes mellitus, seeking to have children. The adenoviral strategy for gene delivery into early mouse embryos may in the long term also find wide clinical application in the treatment of genetic defects at the very earliest stages in development and as such is of enormous potential benefit in the management of both animal and human reproduction.Read moreRead less
Katanin P80 Is A Key Regulator Of Microtubule Dynamics And Male Fertility.
Funder
National Health and Medical Research Council
Funding Amount
$603,756.00
Summary
Male fertility is a complex process requiring the co-ordinated activation of thousands of gene products. It is not surprising therefore that 1 in 15 Australian men are infertile. This project will explore an essential pathways for sperm production, specifically related to sperm shaping and motility. This work may ultimately have implications for the diagnosis and treatment of male infertility, but also for pathology in tissues will similar cellular structures.