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BMC cancer
Oct 10, 2018;18 (1): 960.

Genomic analysis of DNA repair genes and androgen signaling in prostate cancer.

Kasey Jividen, Katarzyna Z Kedzierska, Chun-Song Yang, Karol Szlachta, Aakrosh Ratan, Bryce M Paschal
Author Information
  1. Kasey Jividen: Center for Cell Signaling, University of Virginia, Charlottesville, VA, USA.
  2. Katarzyna Z Kedzierska: Center for Public Health Genomics, University of Virginia, Charlottesville, VA, USA.
  3. Chun-Song Yang: Center for Cell Signaling, University of Virginia, Charlottesville, VA, USA.
  4. Karol Szlachta: Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA, USA.
  5. Aakrosh Ratan: Center for Public Health Genomics, University of Virginia, Charlottesville, VA, USA.
  6. Bryce M Paschal: Center for Cell Signaling, University of Virginia, Charlottesville, VA, USA. paschal@virginia.edu.
PMID: 30305041 DOI: 10.1186/s12885-018-4848-x

Abstract

BACKGROUND: The cellular effects of androgen are transduced through the androgen receptor, which controls the expression of genes that regulate biosynthetic processes, cell growth, and metabolism. Androgen signaling also impacts DNA damage signaling through mechanisms involving gene expression and transcription-associated DNA damaging events. Defining the contributions of androgen signaling to DNA repair is important for understanding androgen receptor function, and it also has translational implications.
METHODS: We generated RNA-seq data from multiple prostate cancer lines and used bioinformatic analyses to characterize androgen-regulated gene expression. We compared the results from cell lines with gene expression data from prostate cancer xenografts, and patient samples, to query how androgen signaling and prostate cancer progression influences the expression of DNA repair genes. We performed whole genome sequencing to help characterize the status of the DNA repair machinery in widely used prostate cancer lines. Finally, we tested a DNA repair enzyme inhibitor for effects on androgen-dependent transcription.
RESULTS: Our data indicates that androgen signaling regulates a subset of DNA repair genes that are largely specific to the respective model system and disease state. We identified deleterious mutations in the DNA repair genes RAD50 and CHEK2. We found that inhibition of the DNA repair enzyme MRE11 with the small molecule mirin inhibits androgen-dependent transcription and growth of prostate cancer cells.
CONCLUSIONS: Our data supports the view that crosstalk between androgen signaling and DNA repair occurs at multiple levels, and that DNA repair enzymes in addition to PARPs, could be actionable targets in prostate cancer.

Keywords

Androgen receptor DNA repair and DNA damage response Prostate cancer

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Grants

  1. R01 CA214872/NCI NIH HHS
  2. T32 CA009109/NCI NIH HHS
  3. CA214872/National Cancer Institute

MeSH Term

Androgens
Animals
DNA Repair
DNA, Neoplasm
Gene Expression Regulation, Neoplastic
Humans
Male
PC-3 Cells
Prostatic Neoplasms
Protein Kinase Inhibitors
Receptors, Androgen
Signal Transduction
Transcription, Genetic

Chemicals

Androgens
DNA, Neoplasm
Protein Kinase Inhibitors
Receptors, Androgen
Journal Article

Links to CNCB-NGDC Resources

GEN: GEND000020 (Genomic Analysis of DNA Repair Genes and Androgen Signaling in Prostate Cancer)

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