PMID- 17188427 OWN - NLM STAT- MEDLINE DCOM- 20070821 LR - 20181113 IS - 0304-3835 (Print) IS - 0304-3835 (Linking) VI - 253 IP - 1 DP - 2007 Aug 8 TI - Tumor-suppressive activity of retinoic acid receptor-beta in cancer. PG - 14-24 AB - Retinoids, a group of structural and functional analogs of vitamin A, are known to regulate a large number of essential biological processes and to suppress carcinogenesis. The effects of retinoids are mainly mediated by nuclear retinoid receptors, which include retinoic acid receptors (RARs) and retinoid X receptors (RXRs). Each receptor has three subtypes (alpha, beta, and gamma) and each subtype has different isoforms. Retinoic acid receptor-beta (RAR-beta) has four isoforms that have different affinities to retinoids and different biological functions. Loss of expression of RAR-beta(2) during cancer development is associated with tumorigenesis and retinoid resistance; induction of its expression, on the other hand, can suppress carcinogenesis. Expression of another isoform, RAR-beta(4), is increased in various types of cancer. RAR-beta(4) transgenic mice develop hyperplasia and neoplasia in various tissues, and induction of RAR-beta(4) expression increases the growth of tumor cells that do not express RAR-beta(2). Future studies will focus on molecular pathways involving RAR-beta(2) and the role of RAR-beta(4) in cancer development. FAU - Xu, Xiao-Chun AU - Xu XC AD - Department of Clinical Cancer Prevention, Unit 1360, The University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030, USA. xxumdanderson.org LA - eng GR - R21 CA10226/CA/NCI NIH HHS/United States GR - R29 CA74835/CA/NCI NIH HHS/United States GR - R29 CA074835-02/CA/NCI NIH HHS/United States GR - R01 CA117895/CA/NCI NIH HHS/United States GR - R21 CA102265-02/CA/NCI NIH HHS/United States GR - R29 CA074835/CA/NCI NIH HHS/United States GR - R01 CA117895-01A2/CA/NCI NIH HHS/United States GR - R21 CA102265/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Review DEP - 20061222 PL - Ireland TA - Cancer Lett JT - Cancer letters JID - 7600053 RN - 0 (Biomarkers) RN - 0 (Protein Isoforms) RN - 0 (Receptors, Retinoic Acid) RN - 0 (retinoic acid receptor beta) SB - IM MH - Base Sequence MH - Biomarkers/metabolism MH - Forecasting MH - Humans MH - Molecular Sequence Data MH - Neoplasms/*metabolism/prevention & control MH - Protein Isoforms/metabolism MH - Receptors, Retinoic Acid/genetics/*physiology PMC - PMC2562790 MID - NIHMS26194 EDAT- 2006/12/26 09:00 MHDA- 2007/08/22 09:00 PMCR- 2008/10/07 CRDT- 2006/12/26 09:00 PHST- 2006/10/02 00:00 [received] PHST- 2006/11/20 00:00 [revised] PHST- 2006/11/22 00:00 [accepted] PHST- 2006/12/26 09:00 [pubmed] PHST- 2007/08/22 09:00 [medline] PHST- 2006/12/26 09:00 [entrez] PHST- 2008/10/07 00:00 [pmc-release] AID - S0304-3835(06)00654-9 [pii] AID - 10.1016/j.canlet.2006.11.019 [doi] PST - ppublish SO - Cancer Lett. 2007 Aug 8;253(1):14-24. doi: 10.1016/j.canlet.2006.11.019. Epub 2006 Dec 22.