PMID- 10215624 OWN - NLM STAT- MEDLINE DCOM- 19990601 LR - 20220408 IS - 0890-9369 (Print) IS - 0890-9369 (Linking) VI - 13 IP - 8 DP - 1999 Apr 15 TI - Roles for Nkx3.1 in prostate development and cancer. PG - 966-77 AB - In aging men, the prostate gland becomes hyperproliferative and displays a propensity toward carcinoma. Although this hyperproliferative process has been proposed to represent an inappropriate reactivation of an embryonic differentiation program, the regulatory genes responsible for normal prostate development and function are largely undefined. Here we show that the murine Nkx3.1 homeobox gene is the earliest known marker of prostate epithelium during embryogenesis and is subsequently expressed at all stages of prostate differentiation in vivo as well as in tissue recombinants. A null mutation for Nkx3.1 obtained by targeted gene disruption results in defects in prostate ductal morphogenesis and secretory protein production. Notably, Nkx3.1 mutant mice display prostatic epithelial hyperplasia and dysplasia that increases in severity with age. This epithelial hyperplasia and dysplasia also occurs in heterozygous mice, indicating haploinsufficiency for this phenotype. Because human NKX3.1 is known to map to a prostate cancer hot spot, we propose that NKX3.1 is a prostate-specific tumor suppressor gene and that loss of a single allele may predispose to prostate carcinogenesis. The Nkx3.1 mutant mice provide a unique animal model for examining the relationship between normal prostate differentiation and early stages of prostate carcinogenesis. FAU - Bhatia-Gaur, R AU - Bhatia-Gaur R AD - Center for Advanced Biotechnology and Medicine, University of Medicine and Dentistry of New Jersey (UMDNJ)-Robert Wood Johnson Medical School, Piscataway, New Jersey 08854 USA. FAU - Donjacour, A A AU - Donjacour AA FAU - Sciavolino, P J AU - Sciavolino PJ FAU - Kim, M AU - Kim M FAU - Desai, N AU - Desai N FAU - Young, P AU - Young P FAU - Norton, C R AU - Norton CR FAU - Gridley, T AU - Gridley T FAU - Cardiff, R D AU - Cardiff RD FAU - Cunha, G R AU - Cunha GR FAU - Abate-Shen, C AU - Abate-Shen C FAU - Shen, M M AU - Shen MM LA - eng GR - CA76501/CA/NCI NIH HHS/United States GR - R01 HD034883/HD/NICHD NIH HHS/United States GR - P30 CA034196/CA/NCI NIH HHS/United States GR - DK52721/DK/NIDDK NIH HHS/United States GR - R01 NS036437/NS/NINDS NIH HHS/United States GR - T32 MH019957/MH/NIMH NIH HHS/United States GR - R01 DK051101/DK/NIDDK NIH HHS/United States GR - CA59831/CA/NCI NIH HHS/United States GR - R01 CA076501/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Genes Dev JT - Genes & development JID - 8711660 RN - 0 (Homeodomain Proteins) RN - 0 (NKX3-1 protein, human) RN - 0 (Nkx3-1 protein, mouse) RN - 0 (Proteins) RN - 0 (Transcription Factors) SB - IM MH - Animals MH - Bulbourethral Glands/metabolism MH - Cell Differentiation MH - Epithelium MH - Gene Expression MH - Gene Targeting MH - *Genes, Tumor Suppressor MH - Homeodomain Proteins/genetics/*physiology MH - Humans MH - Male MH - Mice MH - Morphogenesis MH - Prostate/embryology/metabolism/pathology MH - Prostatic Hyperplasia/*etiology/genetics/pathology MH - Prostatic Neoplasms/*etiology/genetics/pathology MH - Proteins/metabolism MH - Transcription Factors/genetics/*physiology PMC - PMC316645 EDAT- 1999/04/24 00:00 MHDA- 1999/04/24 00:01 CRDT- 1999/04/24 00:00 PHST- 1999/04/24 00:00 [pubmed] PHST- 1999/04/24 00:01 [medline] PHST- 1999/04/24 00:00 [entrez] AID - 10.1101/gad.13.8.966 [doi] PST - ppublish SO - Genes Dev. 1999 Apr 15;13(8):966-77. doi: 10.1101/gad.13.8.966.