Neuroendocrine Functions Of PrRP, A Novel Hypothalamic Peptide
Funder
National Health and Medical Research Council
Funding Amount
$183,928.00
Summary
This project investigates the role of a newly discovered chemical (peptide) that is found in a part of the brain called the hypothalamus which regulates the activity of the pituitary gland. The hypothalamus and pituitary gland work together to control many of the body?s essential processes such as growth, metabolism and reproduction. Some human diseases are caused by abnormalities of the hypothalamus and pituitary gland while many other diseases affect the functions of these glands, leading to w ....This project investigates the role of a newly discovered chemical (peptide) that is found in a part of the brain called the hypothalamus which regulates the activity of the pituitary gland. The hypothalamus and pituitary gland work together to control many of the body?s essential processes such as growth, metabolism and reproduction. Some human diseases are caused by abnormalities of the hypothalamus and pituitary gland while many other diseases affect the functions of these glands, leading to widespread complications such as weight loss, wasting, abnormal immune responses, infertility or failure of lactation. While many of the hormones and chemicals of the hypothalamus and pituitary gland have been extensively studied, recent advances in molecular biology have led to the discovery of new chemicals that may have important regulatory functions. One of these newly discovered substances which was named Prolactin-Releasing Peptide or PrRP is the topic of this project. PrRP will be tested in a series of experiments in animals in order to determine how important it is in regulating the pituitary gland, particularly in stress and during lactation which are conditions when PrRP could be secreted. It is hoped that this research will lead to a more detailed understanding of how the reproductive and endocrine system are controlled in humans and to new methods for the manipulation of these systems under normal and disease conditions.Read moreRead less
ELF5 Integrates Prolactin And Progestin Control Of Mammary Gland Development Via Regulation Of Progenitor Cells.
Funder
National Health and Medical Research Council
Funding Amount
$720,515.00
Summary
Elf5 may act as a master-regulator of mammary cell growth during pregnancy. We will demonstrate that Elf5 can replace the requirement for prolactin and progesterone to trigger mammary development and we will determine the stem or progenitor cells Elf5 acts on. Finally we will apply this knowledge to breast cancer cell lines to discover what role Elf5 plays in breast cancer. These experiments have the potential to establish Elf5 as a new therapeutic target for the treatment of breast cancer.
Breast cancers have diverse characteristics such as their response to treatment and their propensity to relapse. We know that the individual suit of oncogenic lesions probably influences diversity but the characteristics of the cell type from which the cancer arose probably also plays a part. This Application addresses this question and investigates a major new discovery made by the applicant that the ets transcription factor Elf5 plays a key role in specifying the diversity in breast cancer.