Accession Number : AD1043095

Title :   Validation and Interrogation of Differentially Expressed and Alternately Spliced Genes in African American Prostate Cancer

Descriptive Note : Technical Report,30 Sep 2016,29 Sep 2017

Corporate Author : Duke University Durham United States

Personal Author(s) : Patierno, Steven

Full Text :

Report Date : 01 Oct 2017

Pagination or Media Count : 24

Abstract : We have discovered RNA splicing as a novel mechanism underlying tumor aggressiveness and drug resistance in African American (AA) prostate cancer (PCa). To interrogate further the contribution of RNA splicing to the more aggressive PCa biology in AA men, we are collecting AA and white PCa patient blood and tissue specimens of varying Gleason grade for study. In addition, we have identified RNA splicing regulatory variants that associate with PCa risk, aggressiveness and/or survival. Furthermore, we have developed a splice-switching oligonucleotide (SSO) that inhibits production of a pathogenic androgen receptor (AR) variant at the RNA- and protein-level, while maintaining expression of full-length AR, which has therapeutic value. This SSO inhibits proliferation of PCa cells and restores sensitivity to an AR inhibitor. In addition, we have developed SSOs that drive production of inhibitory dominant-negative epidermal growth factor receptor (EGFR) isoforms at the RNA-level and decrease phosphorylated EGFR protein. Ultimately, this study will establish novel biological differences between AA and white PCa and their relevance to tumor biology, which will aid in the development of new biomarkers and/or therapeutics that will reduce PCa health disparities for AAs and improve outcomes for men of all races with aggressive disease.

Descriptors :   Prostate cancer , gene expression , neoplasms , African americans , ribonucleic acids , Caucasians , NUCLEOTIDES , inhibitors , androgens , biological markers

Subject Categories : Medicine and Medical Research
      Genetic Engineering and Molecular Biology

Distribution Statement : APPROVED FOR PUBLIC RELEASE