Enhancement of androgen transcriptional activation assay based on genome edited glucocorticoid knock out human prostate cancer cell line

Environ Res. 2019 Apr:171:437-443. doi: 10.1016/j.envres.2019.01.027. Epub 2019 Jan 11.

Abstract

Endocrine-disrupting chemicals (EDCs) interfere with the biological activity of hormones. Among EDC's, (anti-)androgenic compounds potentially cause several androgen-related diseases. To improve the accuracy of an in vitro transactivation assay (TA) for detection of (anti-)androgenic compounds, We established the glucocorticoid receptor (GR) knockout 22Rv1/MMTV cell line by using an RNA-guided engineered nuclease (RGEN)-derived CRISPR/Cas system. The 22Rv1/MMTV GRKO cell line was characterized and validated by androgen receptor (AR)-mediated TA assay compared with the AR-TA assay using 22Rv1/MMTV. In conclusion, the AR-TA assay with the 22Rv1/MMTV GRKO cell line was more accurate, excluding the misleading signals derived from glucocorticoids or equivalent chemicals, and might be an effective method for screening potential (anti-)androgenic compounds.

Keywords: 22Rv1 cell lines; Androgen transactivation assay; Glucocorticoid receptor; RNA-guided engineered nuclease.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Androgen Antagonists
  • Androgens / toxicity*
  • Cell Line, Tumor
  • Glucocorticoids / metabolism*
  • Humans
  • Male
  • Prostatic Neoplasms
  • Transcriptional Activation

Substances

  • Androgen Antagonists
  • Androgens
  • Glucocorticoids