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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Implications for RNase L in prostate cancer biology.

Recently, the interferon ( IFN) antiviral pathways and prostate cancer genetics and have surprisingly converged on a single-strand specific, regulated endoribonuclease. Genetics studies from several laboratories in the U.S., Finland, and Israel, support the recent identification of the RNase L gene, RNASEL, as a strong candidate for the long sought after hereditary prostate cancer 1 ( HPC1) allele. Results from these studies suggest that mutations in RNASEL predispose men to an increased incidence of prostate cancer, which in some cases reflect more aggressive disease and/or decreased age of onset compared with non-RNASEL linked cases. RNase L is a uniquely regulated endoribonuclease that requires 5'-triphosphorylated, 2',5'-linked oligoadenylates (2-5A) for its activity. The presence of both germline mutations in RNASEL segregating with disease within HPC-affected families and loss of heterozygosity (LOH) in tumor tissues suggest a novel role for the regulated endoribonuclease in the pathogenesis of prostate cancer. The association of mutations in RNASEL with prostate cancer cases further suggests a relationship between innate immunity and tumor suppression. It is proposed here that RNase L functions in counteracting prostate cancer by virtue of its ability to degrade RNA, thus initiating a cellular stress response that leads to apoptosis. This monograph reviews the biochemistry and genetics of RNase L as it relates to the pathobiology of prostate cancer and considers implications for future screening and therapy of this disease.[1]


  1. Implications for RNase L in prostate cancer biology. Silverman, R.H. Biochemistry (2003) [Pubmed]
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