PMID- 7669070 OWN - NLM STAT- MEDLINE DCOM- 19951012 LR - 20190623 IS - 0006-2952 (Print) IS - 0006-2952 (Linking) VI - 50 IP - 5 DP - 1995 Aug 25 TI - Diminished teratogenicity of retinoid X receptor-selective synthetic retinoids. PG - 669-76 AB - One feature that contraindicates the wide therapeutic use of retinoids is their teratogenicity. Synthetic retinoids are distinguishable from each other on the basis of their partial or exclusive preference in binding and activation of all-trans retinoic acid receptors (RARs) or retinoid X receptors (RXRs). Using mouse embryo limb bud cells in micromass cultures as a bioassay, we examined the inhibitory activities of a number of standard and novel retinoids on chondrogenic cell differentiation. Transient cotransfection of HeLa cells was used to measure the ability of each retinoid to induce transcription of a reporter gene by activating RAR alpha, RAR beta, RAR gamma, or RXR alpha chimeric constructs. All retinoids in this study that activated RARs to any degree in the cotransfection assay also inhibited chondrogenesis in vitro, whereas retinoids that were either specific for RXR or inactive in the cotransfection assay did not. The activity of RAR-selective agonists and the inactivity of RXR-specific agonists in the cotransfection assay correlated well with the relative teratogenicity of six of the representative retinoids studied when orally administered at day 11 to pregnant ICR mice. FAU - Jiang, H AU - Jiang H AD - Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA, USA. FAU - Penner, J D AU - Penner JD FAU - Beard, R L AU - Beard RL FAU - Chandraratna, R A AU - Chandraratna RA FAU - Kochhar, D M AU - Kochhar DM LA - eng GR - HD20925/HD/NICHD NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - England TA - Biochem Pharmacol JT - Biochemical pharmacology JID - 0101032 RN - 0 (Receptors, Retinoic Acid) RN - 0 (Retinoid X Receptors) RN - 0 (Retinoids) RN - 0 (Teratogens) RN - 0 (Transcription Factors) SB - IM MH - Animals MH - Binding Sites MH - Cartilage/drug effects/embryology MH - Female MH - HeLa Cells MH - Humans MH - Mice MH - Mice, Inbred ICR MH - Pregnancy MH - Receptors, Retinoic Acid/*drug effects/metabolism MH - Retinoid X Receptors MH - Retinoids/metabolism/pharmacokinetics/*toxicity MH - Teratogens/metabolism/pharmacokinetics/*toxicity MH - Transcription Factors/*drug effects/metabolism EDAT- 1995/08/25 00:00 MHDA- 1995/08/25 00:01 CRDT- 1995/08/25 00:00 PHST- 1995/08/25 00:00 [pubmed] PHST- 1995/08/25 00:01 [medline] PHST- 1995/08/25 00:00 [entrez] AID - 0006-2952(95)00183-Z [pii] AID - 10.1016/0006-2952(95)00183-z [doi] PST - ppublish SO - Biochem Pharmacol. 1995 Aug 25;50(5):669-76. doi: 10.1016/0006-2952(95)00183-z.