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Role Of Cyclin E2 In Hormone-responsive Breast Cancer
Funder
National Health and Medical Research Council
Funding Amount
$328,194.00
Summary
The female hormone estrogen stimulates the growth of breast cancers by promoting cell reproduction. We have found that cyclin E2, which is part of the machinery that controls cell reproduction, responds to estrogen. Since abnormally high levels of cyclin E2 are linked with earlier relapse in breast cancer, we wish to understand what role it plays in estrogen action and in breast cancer, how its levels are controlled, and whether too much cyclin E2 interferes with drugs that block estrogen action
I am a cellular biologist studying lineage commitment and differentiation in the mammary gland. Key interests include defining transcriptional regulators that are important for mammary gland development and oncogenesis, and the characterisation of normal
Isolation And Characterisation Of Mouse Mammary Stem And Progenitor Cells
Funder
National Health and Medical Research Council
Funding Amount
$540,202.00
Summary
We have discovered the rare adult stem cell from which all breast epithelial tissue is formed. A single stem cell was found to be capable of giving rise to various cell types in the breast, including the secretory units that produce milk and the ductal cells that transmit milk to the nipple. These cell types are responsible for the majority of human breast tumours. However, the precise 'cell of origin' from which cancers ultimately develop is not known. We recently also found that the stem cell ....We have discovered the rare adult stem cell from which all breast epithelial tissue is formed. A single stem cell was found to be capable of giving rise to various cell types in the breast, including the secretory units that produce milk and the ductal cells that transmit milk to the nipple. These cell types are responsible for the majority of human breast tumours. However, the precise 'cell of origin' from which cancers ultimately develop is not known. We recently also found that the stem cell population is expanded in at least one model of mammary tumours, suggesting that some tumours may arise from the breast stem cell itself. Using mouse models and cellular assays, our aim is to characterise, for the first time, the hierarchy of stem, progenitor ('daughter cells') and mature cells in the mammary gland. These studies will provide insight into the various cell types that give rise to different types of breast cancer. An important evolving concept in cancer biology is that a rare population of cells resident within a tumour, termed 'cancer stem cells', have indefinite growth potential and drive tumour growth. These cells could even account for resistance to conventional anti-cancer treatment, as cells with stem cell-like properties would be able to proliferate extensively and form new tumours. We will apply our knowledge of normal mammary stem cells to determine whether cancer stem cells are indeed present in mouse tumours. Those findings will have direct relevance to human breast cancer. Utlimately, we wish to identify specific cell surface proteins on stem and precursor cells that could provide therapeutic targets. Our studies will provide new insights into the cell types from which breast cancer arise, and how their fate and tumour-forming capacity can be modified by altering gene expression. Delineation of cancer-prone cells and cancer stem cells could reveal new markers and provide new therapeutic strategies to target breast cancer.Read moreRead less
Analysis Of Very Early Cancer-related Methylation Abnomalities
Funder
National Health and Medical Research Council
Funding Amount
$422,310.00
Summary
The factors that are involved in triggering cancer are still unknown. Increasing evidence however indicates that the DNA in the pre-cancer cell becomes modified leading to altered expression of important genes called tumour suppressor genes. Often the DNA is deleted or mutated but it can also become chemically changed by a process called DNA methylation. We have found that an important tumour suppressor gene called p16 is inactivated and chemically methylated in breast epithelial cells at the st ....The factors that are involved in triggering cancer are still unknown. Increasing evidence however indicates that the DNA in the pre-cancer cell becomes modified leading to altered expression of important genes called tumour suppressor genes. Often the DNA is deleted or mutated but it can also become chemically changed by a process called DNA methylation. We have found that an important tumour suppressor gene called p16 is inactivated and chemically methylated in breast epithelial cells at the stage when the cell changes to a pre-cancer cell. This grant is aimed at finding what triggers the silencing and methylation of the p16 gene in this early pre-cancer stage. We also plan to identify other genes are methylated and undergo inactivation the pre-cancer breast cells. These results will have an impact on understanding the molecular mechanism that makes a breast cell susceptible to cancer and may lead to insights into new prevention and treatment strategies.Read moreRead less
High Resolution Genome-wide Genomic Analysis Of DCIS To Identify Genes Involved In Disease Initiation And Progression
Funder
National Health and Medical Research Council
Funding Amount
$543,370.00
Summary
DCIS is the most common type of noninvasive breast cancer and in some women may progress to malignant disease but little in know about how it develops. We will bring to bear our experience with cutting edge technology and access to extensive clinical resources to the analysis of a large series of pure DCIS with the aim of identifying previously unknown cancer causing genes. This data will lead to the identification of novel breast cancer genes that will assist clinical management.
Clinicopathological Characterisation Of Male Breast Cancer
Funder
National Health and Medical Research Council
Funding Amount
$113,322.00
Summary
Male Breast Cancer is an uncommon and poorly understood disease. Due to its low frequency, there is a paucity of studies with large numbers of patients. Our aim will be to establish one of the largest worldwide databases of Male Breast Cancer. This will allow us to more thoroughly investigate clinical, pathological and molecular characteristics of male breast cancer, improve treatment of these patients and potentially develop novel and innovative strategies for treatment of female breast cancer.
Translating Molecular Determinants Of Susceptibility And Progression In Breast Cancer
Funder
National Health and Medical Research Council
Funding Amount
$6,510,085.00
Summary
Breast cancer is the most common cancer in women. Despite improvements in prevention, detection and treatment, it is the 2nd most common cause of cancer death in Australian women. Research advances in the last decade have improved our understanding of the pathways from susceptibility to progression and metastasis but this has mostly not yet translated into better outcomes. This program aims to translate some of our fundamental discoveries to improve outcome for affected women and their families.
Cellular And Molecular Aspects Of Mammographic Density As A Predictor Of Breast Cancer Risk In Pseudo-orthotopic Mammatrophic Environment
Funder
National Health and Medical Research Council
Funding Amount
$113,322.00
Summary
High mammographic density (MD), or denser breast tissue on mammogram, is associated with greater breast cancer risk. Despite this, the basis for its increased risk is poorly understood. This study assesses the effect of high density breast tissue transferred from high risk women at time of mastectomy into tissue engineering chambers in mice. Changes in the connective tissue harvested from the chamber were examined with specialized imaging, laboratory stains and molecular analysis.
KConFaB - A CONSORTIUM FOR RESEARCH ON FAMILIAL BREAST CANCER
Funder
National Health and Medical Research Council
Funding Amount
$1,624,711.00
Summary
Breast cancer is the most common disease of women. In families with an inherited form of breast cancer, nearly half the women in every generation can develop the disease. The aim of this Australia-wide study is to collect clinical, epidemiological and genetic data on approximately 700 of these severely-affected families. This national resource will be of great value for researchers who want to identify and characterize the genetic and life-style factors that affect the onset and progression of t ....Breast cancer is the most common disease of women. In families with an inherited form of breast cancer, nearly half the women in every generation can develop the disease. The aim of this Australia-wide study is to collect clinical, epidemiological and genetic data on approximately 700 of these severely-affected families. This national resource will be of great value for researchers who want to identify and characterize the genetic and life-style factors that affect the onset and progression of the disease. The data emerging from the study will lead to more accurate genetic counselling, better surveillance and, ultimately, better methods to prevent and treat the disease in families who inherit a predisposition to the disease.Read moreRead less
CLINICAL CHARACTERIZATION OF GENETICALLY DEFINED GERMLINE SUB-GROUPS OF MELANOMA AND BREAST CANCER PATIENTS.
Funder
National Health and Medical Research Council
Funding Amount
$140,949.00
Summary
In this project I will assess how cancer patients’ genetic makeup influences the nature and outcome of their cancer, especially in terms of how successful treatment is likely to be. We will show how key genetic variants influence cancer behaviour and by combining these genes we will have a better understanding of how to develop more successful treatments.