Inhibin, alfa (INHA) je protein koji je kod ljudi kodiran INHA genom.[1]
Inhibin alfa podjedinica zajedno sa još jednom beta A ili beta B podjedinicom formira hipofizni FSH sekretorni inhibitor. Inhibin negativno reguliše proliferaciju gonadalnih stromalnih ćelija i ima supresivno dejstvo na tumour. Serumski nivoi inhibina odražavaju veličinu granulosa-ćelija tumora i mogu se koristiti kao marker za primarnu kao i rekurentnu bolest. Kod kancera prostate, izražavanje gena inhibin alfa-podjedinice je potisnuto i ne može se detektovati kod slabo diferenciranih ćelija tumora.[2]
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- Mason AJ, Niall HD, Seeburg PH (1986). „Structure of two human ovarian inhibins”. Biochem. Biophys. Res. Commun. 135 (3): 957–64. DOI:10.1016/0006-291X(86)91021-1. PMID 3754442.
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- Xu J, McKeehan K, Matsuzaki K, McKeehan WL (1995). „Inhibin antagonizes inhibition of liver cell growth by activin by a dominant-negative mechanism”. J. Biol. Chem. 270 (11): 6308–13. DOI:10.1074/jbc.270.11.6308. PMID 7890768.
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