Role of GCN5 in Estrogen Responses, Tumor Suppression, and Breast Development in Mice
Abstract
Nucleosomes are folded together into chromatin structures that inhibit transcription. Studies here test the idea that an enzyme, Gcn5, that regulates chromatin folding is important for p53 functions and for estrogen responses. Experiments were proposed to 1) determine whether Gcn5 serves as a coactivator for activation of gene expression by the estrogen receptor 2) examine biochemical, molecular, and genetic connections between Gcn5 and p53 and 3) to generate a mammary gland specific knock out' of Gcn5 in mice to create a mouse model for Gcn5 functions in breast development and tumor formation. We have made good progress towards all three aims. We have examined Gcn5-dependence of estrogen responses in ER+ cell lines. We have generated mice that carry null alleles for both Gcn5 and p53 in cis on chromosome 11. We have generated mice that carry a conditional disruption allele for Gcn5 that will allow us to do the breast-specific knock out in the coming year. Our studies will provide new information about breast cancer biology. Moreover, they will allow us to determine whether histone acetyltransferases might provide targets for development of new drug therapies or diagnostic agents, furthering our advancement towards eradication of this disease.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 2002
- Accession Number
- ADA407400
Entities
People
- Sharon Y. Dent
Organizations
- The University of Texas MD Anderson Cancer Center