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Role Of SOCS3 In Mammary Gland Development And Tumorigenesis
Funder
National Health and Medical Research Council
Funding Amount
$224,278.00
Summary
We are studying the role of a family of inhibitory molecules (SOCS) in breast tissue; these proteins have been established to have critical roles in the immune system and in regulating growth of the entire animal. We have demonstrated that one member of this family can block the action of the prolactin hormone and have recently obtained evidence that another member of this family, SOCS3, affects survival of breast cells. Furthermore, this protein leads to increased growth when overexpressed in b ....We are studying the role of a family of inhibitory molecules (SOCS) in breast tissue; these proteins have been established to have critical roles in the immune system and in regulating growth of the entire animal. We have demonstrated that one member of this family can block the action of the prolactin hormone and have recently obtained evidence that another member of this family, SOCS3, affects survival of breast cells. Furthermore, this protein leads to increased growth when overexpressed in breast cells. We propose to define the normal role of this gene in mouse mammary tissue and to examine the consequences of expressing the gene at high levels in the mammary glands of mice. Inappropriate expression of this gene may predispose humans to breast cancer. SOCS3 expression will be directly studied in a cohort of primary invasive breast cancers with associated clinical outcome data, to determine whether it has a role as a potential prognostic marker.Read moreRead less
Determination Of Diagnostic Molecular Profiles For Intraduct Lesions Of The Breast.
Funder
National Health and Medical Research Council
Funding Amount
$308,400.00
Summary
Breast cancer originates in cells within breast ducts. The introduction of Breast Screening for breast cancer has led to a dramatic increase in the diagnosis of breast cancer which is confined to these ducts and has not spread to surrounding tissue. This is known as 'ductal carcinoma in situ' or DCIS. It is evident that DCIS is variable in its tendency to give rise to more advanced breast cancer. However, currently our ability to predict the potential agressiveness of a particular DCIS is limite ....Breast cancer originates in cells within breast ducts. The introduction of Breast Screening for breast cancer has led to a dramatic increase in the diagnosis of breast cancer which is confined to these ducts and has not spread to surrounding tissue. This is known as 'ductal carcinoma in situ' or DCIS. It is evident that DCIS is variable in its tendency to give rise to more advanced breast cancer. However, currently our ability to predict the potential agressiveness of a particular DCIS is limited. In this research we are proposing to develop new methods for evaluation of DCIS that will more accurately predict clinical behaviour. An important adjunct is to ensure that these methods can be practically applied in a routine diagnostic setting. Achievement of the aims of this project will assist treatment planning for patients diagnosed with DCIS. It will also provide important information about breast cancers diagnosed as a consequence of breast screening.Read moreRead less
The applicant's research is aimed at delineating the molecular mechanisms of action of steroid hormones in the pathogenesis of breast and prostate cancer with the goal of developing new diagnostic, prognostic and therapeutic response parameters of clinica
Tailored Treatments For Premenopausal Patients With Endocrine Responsive Breast Cancer.
Funder
National Health and Medical Research Council
Funding Amount
$257,250.00
Summary
For women under 50 years with hormone receptor positive (ER+) breast cancer, adjuvant treatment with chemotherapy, tamoxifen and ovarian ablation are each effective and reduce recurrence. Combining two treatments is more effective than one, although it is uncertain if combining three provides extra benefit. Ovarian ablation by surgery or radiation is permanent, but reversible ovarian suppression by injections is now available. Three international trials called SOFT, TEXT and PERCHE have been des ....For women under 50 years with hormone receptor positive (ER+) breast cancer, adjuvant treatment with chemotherapy, tamoxifen and ovarian ablation are each effective and reduce recurrence. Combining two treatments is more effective than one, although it is uncertain if combining three provides extra benefit. Ovarian ablation by surgery or radiation is permanent, but reversible ovarian suppression by injections is now available. Three international trials called SOFT, TEXT and PERCHE have been designed for adjuvant therapy of premenopausal women with ER+ breast cancer. These trials take into account regional-country variations in medical practice and different patient choices in this setting. SOFT is for very young women and tests the benefit of adding ovarian suppression in a woman who has received chemotherapy, with tamoxifen planned, but who has not gone into menopause after chemotherapy. The trial also tests if substituting a newer drug called exemestane for tamoxifen, combined with ovarian function suppression is more effective. TEXT is for women who would ordinarily be treated with ovarian suppression plus tamoxifen. The TEXT trial also tests substitution of exemestane for tamoxifen. Exemestane is an aromatase inhibitor. Aromatase inhibitors lower oestrogen levels, but only work if the ovaries are inactive. Recent trials in post menopausal women show aromatase inhibitors are more effective than tamoxifen, and we aim to replicate that improvement in younger women by combining exemestane with ovarian suppression. PERCHE is for women in whom the benefit of chemotherapy is uncertain, for example those with limited or no spread to lymph nodes. All women receive combined endocrine treatment with ovarian suppression plus tamoxifen, and are randomised to receive in addition, either chemotherapy or no chemotherapy, to see if results differ.Read moreRead less