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Several cases of glioma displayed strong nuclear positivity. Moderate cytoplasmic and nuclear staining was observed in a few cases of melanoma, thyroid, skin, testicular, renal and lung cancers. Remaining cancer tissues were in general weakly stained or negative.
Severalmelanomas as well as cases of urothelial cancers and squamous cell carcinomas displayed weak to moderate cytoplasmic immunoreactivity. Remaining cancer tissues were negative.
GENE INFORMATION
Gene name
RNH1 (HGNC Symbol)
Synonyms
RAI, RNH
Description
Ribonuclease/angiogenin inhibitor 1 (HGNC Symbol)
Entrez gene summary
Placental ribonuclease inhibitor (PRI) is a member of a family of proteinaceous cytoplasmic RNase inhibitors that occur in many tissues and bind to both intracellular and extracellular RNases (summarized by Lee et al., 1988 [PubMed 3219362]). In addition to control of intracellular RNases, the inhibitor may have a role in the regulation of angiogenin (MIM 105850). Ribonuclease inhibitor, of 50,000 Da, binds to ribonucleases and holds them in a latent form. Since neutral and alkaline ribonucleases probably play a critical role in the turnover of RNA in eukaryotic cells, RNH may be essential for control of mRNA turnover; the interaction of eukaryotic cells with ribonuclease may be reversible in vivo.[supplied by OMIM, Jul 2010]