This Merit Award has permitted the opportunity to focus over the past decade on the molecular/"epigenetic" strategies that combinatorially regulate programs of gene transcription, that include investigation of histone demethylases, the actions of non-coding RNAs in recruiting regulatory protein complexes in control of transcriptional programs, the role of regulated nuclear architecture in transcriptional regulation and tumor translocation events, the linkage of transcription and DNA damage/repair, the role of specific phosphatases in gene regulation, regulated apoptosis/survival, and the strategies of exchanging corepressor coactivators. Under the first Specific Aim, and based on extensive preliminary data, new histone demethylases affecting cell cycle regulation will be explored and various new aspects of enhancer programming and regulation will be investigated. Under the second Specific Aim, new strategies to investigate tumor translocation by sex steroid receptors, the connection between specific demethylases and septic shock will be explored, and a new strategy for screening chemical libraries is being developed. The recent introduction of powerful new technologies, including next-generation sequencing, has permitted us to generate preliminary data designed to uncover previously- unsuspected aspects of epigenetic regulation of transcription, with particular relevance to translational aspects of common disease including breast and prostate cancer and cytokine storm syndromes, translational areas that represent important research objectives in this Competitive Renewal. We propose specific areas of investigation based on several novel and promising new technologies we are developing under this Grant that will be of broad utility to the scientific community, centered on key, unanswered questions concerning gene regulation by nuclear receptors. We propose to vigorously pursue these fundamental issues in order to accelerate the discovery of as yet unknown putative tumor translocation events in breast cancer, and to complete the development of new, powerful strategies including a new multiplexed screen to identify new approaches to intervene in these regulatory and pathological events.

Public Health Relevance

Nuclear Receptors regulate key aspects of development, homeostasis and provide protection against many inflammatory diseases and also provide ideal models to reveal basic molecular mechanisms for genome-wide transcriptional programs. New technologies are proposed that will help us define the regulatory "epigenetic" landscape in metazoans. The translational aspect of this proposal studies focus on the clinically important diseases of - breast cancer, prostate cancer, and condition of septic-shock, three all-too-prevalent causes of mortality in this country and in the world and by initiating new technologies, including a novel chemical library screening technology, we hope to uncover novel therapeutic leads, as well as to provide central insights into nuclear receptor function.

Agency
National Institute of Health (NIH)
Institute
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Type
Method to Extend Research in Time (MERIT) Award (R37)
Project #
5R37DK039949-30
Application #
8223284
Study Section
Molecular and Cellular Endocrinology Study Section (MCE)
Program Officer
Margolis, Ronald N
Project Start
1996-07-01
Project End
2015-11-30
Budget Start
2011-12-01
Budget End
2012-11-30
Support Year
30
Fiscal Year
2012
Total Cost
$637,022
Indirect Cost
$225,266
Name
University of California San Diego
Department
Internal Medicine/Medicine
Type
Schools of Medicine
DUNS #
804355790
City
La Jolla
State
CA
Country
United States
Zip Code
92093
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Jin, Chunyu; Yang, Liuqing; Xie, Min et al. (2014) Chem-seq permits identification of genomic targets of drugs against androgen receptor regulation selected by functional phenotypic screens. Proc Natl Acad Sci U S A 111:9235-40
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Yang, Liuqing; Lin, Chunru; Jin, Chunyu et al. (2013) lncRNA-dependent mechanisms of androgen-receptor-regulated gene activation programs. Nature 500:598-602
Li, Wenbo; Notani, Dimple; Ma, Qi et al. (2013) Functional roles of enhancer RNAs for oestrogen-dependent transcriptional activation. Nature 498:516-20
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Harismendy, Olivier; Notani, Dimple; Song, Xiaoyuan et al. (2011) 9p21 DNA variants associated with coronary artery disease impair interferon-? signalling response. Nature 470:264-8
Huang, Wendy; Ghisletti, Serena; Saijo, Kaoru et al. (2011) Coronin 2A mediates actin-dependent de-repression of inflammatory response genes. Nature 470:414-8

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