A rare variant of African ancestry activates 8q24 lncRNA hub by modulating cancer associated enhancer.
Title | A rare variant of African ancestry activates 8q24 lncRNA hub by modulating cancer associated enhancer. |
Publication Type | Journal Article |
Year of Publication | 2020 |
Authors | Walavalkar K, Saravanan B, Singh AKumar, Jayani RSingh, Nair A, Farooq U, Islam Z, Soota D, Mann R, Shivaprasad PV, Freedman ML, Sabarinathan R, Haiman CA, Notani D |
Journal | Nat Commun |
Volume | 11 |
Issue | 1 |
Pagination | 3598 |
Date Published | 2020 Jul 17 |
ISSN | 2041-1723 |
Abstract | Genetic variation at the 8q24 locus is linked with the greater susceptibility to prostate cancer in men of African ancestry. One such African ancestry specific rare variant, rs72725854 (A>G/T) (~6% allele frequency) has been associated with a ~2-fold increase in prostate cancer risk. However, the functional relevance of this variant is unknown. Here we show that the variant rs72725854 is present in a prostate cancer-specific enhancer at 8q24 locus. Chromatin-conformation capture and dCas9 mediated enhancer blocking establish a direct regulatory link between this enhancer and lncRNAs PCAT1, PRNCR1 and PVT1. The risk allele ('T') is associated with higher expression of PCAT1, PVT1 and c-myc in prostate tumors. Further, enhancer with the risk allele gains response to androgen stimulation by recruiting the transcription factor SPDEF whereas, non-risk alleles remain non-responsive. Elevated expression of these lncRNAs and c-myc in risk allele carriers may explain their greater susceptibility to prostate cancer. |
DOI | 10.1038/s41467-020-17325-y |
Alternate Journal | Nat Commun |
PubMed ID | 32680982 |
PubMed Central ID | PMC7368061 |
Grant List | DOD PC180367 / / U.S. Department of Defense (United States Department of Defense) / SB/S2/RJN-071/2018 / / DST | Science and Engineering Research Board (SERB) / IA/1/14/2/501539 / / DBT India Alliance (Wellcome Trust/DBT India Alliance) / 12-R&D-TFR-5.04-0800 / / Department of Atomic Energy, Government of India (DAE) / 12-R&D-TFR-5.04-0900 / / TIFR | National Centre for Biological Sciences (NCBS) / |