PMID- 24530888 OWN - NLM STAT- MEDLINE DCOM- 20141124 LR - 20140331 IS - 1873-488X (Electronic) IS - 1056-8719 (Linking) VI - 69 IP - 3 DP - 2014 May-Jun TI - Development of yeast reporter assay for screening specific ligands of retinoic acid and retinoid X receptor subtypes. PG - 245-52 LID - S1056-8719(14)00016-1 [pii] LID - 10.1016/j.vascn.2014.01.007 [doi] AB - INTRODUCTION: Retinoic acids are essential for embryonic development, tissue organization, and homeostasis and act via retinoic acid receptors (RARs) that form heterodimers with retinoid X receptors (RXRs). Human RARs and RXRs include the three subtypes alpha, beta, and gamma, which have varying distributions and physiological functions among human tissues. Recent reports show that subtype-specific binding of several chemicals to RARs or RXRs may lead to endocrine disruption. To evaluate these ligand-like chemicals, convenient assay systems for each receptor subtype are required. METHODS: We developed reporter assay yeasts to screen ligands for RXR subtype receptor homodimers. To screen RAR ligands, yeasts were engineered to express RAR subtypes with defective RXRalpha, which fails to bind to coactivators because of its shortened c-terminus. RESULTS: These assay yeasts were validated using known RXR- and RAR-specific ligands and subtype-specific responses were clearly shown. Subtype-specific ligand activities of the suspected chemical RAR or RXR ligands o-t-butylphenol, triphenyltin chloride, tributyltin chloride, and 4-nonylphenol were determined. DISCUSSION: The present assay yeasts may be valuable tools for subtype-specific assessments of unidentified environmental ligand chemicals and receptor-specific pharmaceuticals. CI - Copyright (c) 2014 Elsevier Inc. All rights reserved. FAU - Shiizaki, Kazuhiro AU - Shiizaki K AD - Department of Biology, Graduate School of Science, Osaka Prefecture University, Osaka, Japan. FAU - Yoshikawa, Tomoya AU - Yoshikawa T AD - Department of Biology, Graduate School of Science, Osaka Prefecture University, Osaka, Japan. FAU - Takada, Eiji AU - Takada E AD - Department of Biology, Graduate School of Science, Osaka Prefecture University, Osaka, Japan. FAU - Hirose, Shizuma AU - Hirose S AD - Department of Biology, Graduate School of Science, Osaka Prefecture University, Osaka, Japan. FAU - Ito-Harashima, Sayoko AU - Ito-Harashima S AD - Department of Biology, Graduate School of Science, Osaka Prefecture University, Osaka, Japan. FAU - Kawanishi, Masanobu AU - Kawanishi M AD - Department of Biology, Graduate School of Science, Osaka Prefecture University, Osaka, Japan. FAU - Yagi, Takashi AU - Yagi T AD - Department of Biology, Graduate School of Science, Osaka Prefecture University, Osaka, Japan; Department of Life Science, Dongguk University, Seoul, Republic of Korea. Electronic address: yagi-t@riast.osakafu-u.ac.jp. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140212 PL - United States TA - J Pharmacol Toxicol Methods JT - Journal of pharmacological and toxicological methods JID - 9206091 RN - 0 (Ligands) RN - 0 (Receptors, Retinoic Acid) RN - 0 (Retinoid X Receptors) RN - 5688UTC01R (Tretinoin) SB - IM MH - Genes, Reporter/genetics MH - Humans MH - Ligands MH - Receptors, Retinoic Acid/*metabolism MH - Retinoid X Receptors/*metabolism MH - Saccharomyces cerevisiae/*genetics MH - Tretinoin/*metabolism OTO - NOTNLM OT - Endocrine disruptors OT - Reporter assay OT - Retinoic acid receptor alpha, beta, gamma OT - Retinoid X receptor alpha, beta, gamma OT - Saccharomyces cerevisiae EDAT- 2014/02/18 06:00 MHDA- 2014/12/15 06:00 CRDT- 2014/02/18 06:00 PHST- 2014/01/06 00:00 [received] PHST- 2014/01/28 00:00 [accepted] PHST- 2014/02/18 06:00 [entrez] PHST- 2014/02/18 06:00 [pubmed] PHST- 2014/12/15 06:00 [medline] AID - S1056-8719(14)00016-1 [pii] AID - 10.1016/j.vascn.2014.01.007 [doi] PST - ppublish SO - J Pharmacol Toxicol Methods. 2014 May-Jun;69(3):245-52. doi: 10.1016/j.vascn.2014.01.007. Epub 2014 Feb 12.