PMID- 21664481 OWN - NLM STAT- MEDLINE DCOM- 20111024 LR - 20161125 IS - 1879-1107 (Electronic) IS - 1096-4959 (Linking) VI - 160 IP - 1 DP - 2011 Sep TI - Isolation and characterization of the CYP17A1 gene and its processed pseudogene in Rana rugosa. PG - 54-61 AB - CYP17A1 expression is up-regulated in the gonad in Rana (Glandirana) rugosa tadpoles treated with androgens to induce female-to-male sex-reversal. In this study, we isolated the CYP17A1 gene and its processed pseudogene from R. rugosa. The former was found to consist of 8 exons, and the latter a single-exon gene, designated CYP17A1P. The sequence of the promoter region of CYP17A1 differed from that of CYP17A1P. We found several consensus binding-sites for candidate transcription factors including androgen receptor (AR), Sox and FoxL2 in the CYP17A1 promoter region, but an AR-binding site was absent from CYP17A1P. When AR was over-expressed in Xenopus A6 cells, it did not increase CYP17A1 transcription in luciferase assays. CYP17A1 was strongly expressed in indifferent male gonads during sex determination and exclusively in testis, among eight adult tissues of R. rugosa. By contrast, CYP17A1P was expressed at very low, and similar levels in the adult tissues of both sexes. Fluorescent In-Situ Hybridization (FISH) analysis showed that CYP17A1P is localized to chromosome 4, while CYP17A1 is on chromosome 9. These results collectively suggest that CYP17A1, but not CYP17A1P is involved in male sex-determination in R. rugosa, and that androgens may not have a direct effect on the CYP17A1 transcription. CI - Copyright (c) 2011 Elsevier Inc. All rights reserved. FAU - Suda, Mari AU - Suda M AD - Department of Biology, Waseda University, Wakamatsu-cho, Shinjuku-ku, Tokyo, Japan. FAU - Uno, Yoshinobu AU - Uno Y FAU - Fujii, Jun AU - Fujii J FAU - Matsuda, Yoichi AU - Matsuda Y FAU - Nakamura, Masahisa AU - Nakamura M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110602 PL - England TA - Comp Biochem Physiol B Biochem Mol Biol JT - Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology JID - 9516061 RN - 0 (Transcription Factors) RN - EC 1.14.14.19 (Steroid 17-alpha-Hydroxylase) SB - IM MH - Animals MH - Base Sequence MH - Female MH - Gonads/enzymology/physiology MH - Male MH - Metamorphosis, Biological/physiology MH - Molecular Sequence Data MH - Phylogeny MH - *Pseudogenes MH - Ranidae/anatomy & histology/*genetics/*metabolism MH - Sex Determination Processes/physiology MH - Steroid 17-alpha-Hydroxylase/classification/*genetics/*isolation & purification/metabolism MH - Tissue Distribution MH - Transcription Factors/genetics/metabolism EDAT- 2011/06/15 06:00 MHDA- 2011/10/25 06:00 CRDT- 2011/06/14 06:00 PHST- 2011/03/03 00:00 [received] PHST- 2011/05/18 00:00 [revised] PHST- 2011/05/24 00:00 [accepted] PHST- 2011/06/14 06:00 [entrez] PHST- 2011/06/15 06:00 [pubmed] PHST- 2011/10/25 06:00 [medline] AID - S1096-4959(11)00108-4 [pii] AID - 10.1016/j.cbpb.2011.05.008 [doi] PST - ppublish SO - Comp Biochem Physiol B Biochem Mol Biol. 2011 Sep;160(1):54-61. doi: 10.1016/j.cbpb.2011.05.008. Epub 2011 Jun 2.