A novel CRISPR-engineered prostate cancer cell line defines the AR-V transcriptome and identifies PARP inhibitor sensitivities.

Development of a novel CRISPR-derived cell line which is a derivative of CWR22Rv1 cells, called CWR22Rv1-AR-EK, that has lost expression of FL-AR, but retains all endogenous AR-Vs. AR-Vs act unhindered by loss of FL-AR to drive cell growth and expression of androgenic genes. Global transcriptomics demonstrate that AR-Vs drive expression of a cohort of DNA damage response genes and depletion of AR-Vs sensitizes cells to ionizing radiation. Overall design: Transcriptomic profile (mRNA) of AR splice variants in CWR22Rv1 AR-EK cells was generated by deep sequencing, in triplicate, using Illumina HiSeq 2500.

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Kounatidou E, Nakjang S, McCracken SRC, Dehm SM, Robson CN, Jones D, Gaughan L