PMID- 9623592 OWN - NLM STAT- MEDLINE DCOM- 19980827 LR - 20190512 IS - 0006-3363 (Print) IS - 0006-3363 (Linking) VI - 58 IP - 6 DP - 1998 Jun TI - Differential expression pattern of retinoid X receptors in adult murine testicular cells implies varying roles for these receptors in spermatogenesis. PG - 1351-6 AB - Retinoids have previously been shown to be crucial for normal spermatogenesis. The role of retinoic acid receptors has been studied, but relatively little is known about the function of retinoid X receptors (RXRs). To gain more insight in the function of RXRs during spermatogenesis, the cellular localization of RXRs in the mouse testis was examined using immunohistochemistry and RNase protection assays. In both normal and vitamin A-deficient (VAD) testes, a strong immune response to an RXRalpha antibody occurred in Leydig cells, peritubular myoid cells, and A spermatogonia. Weaker signals were found in spermatocytes and spermatids. In normal testes, an RXRbeta antibody gave a reaction in Leydig cells, and, to a lesser extent, in Sertoli cells, A spermatogonia, pachytene spermatocytes, and spermatids. In Leydig cells, a cytoplasmatic signal was found in addition to the nuclear signal. In the VAD testis, only Leydig cells and A spermatogonia were positive, which indicates that RXRbeta expression may be dependent on the retinoid status. Previous studies have shown RXRgamma mRNA expression in the mouse testis at a low level. Nevertheless, an RXRgamma antibody caused a strong immune response in interstitial cells and in A spermatogonia, and a weak signal in pachytene spermatocytes. These immunohistochemical data were supported by the results of RNase protection assays on mRNA of testicular cell isolations. In conclusion, the different RXRs in the mouse testis have distinct expression patterns, suggesting that they may have different functions. FAU - Gaemers, I C AU - Gaemers IC AD - Department of Cell Biology, Utrecht University, The Netherlands. gaemers@nki.nl FAU - van Pelt, A M AU - van Pelt AM FAU - van der Saag, P T AU - van der Saag PT FAU - Hoogerbrugge, J W AU - Hoogerbrugge JW FAU - Themmen, A P AU - Themmen AP FAU - de Rooij, D G AU - de Rooij DG LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Biol Reprod JT - Biology of reproduction JID - 0207224 RN - 0 (RNA, Messenger) RN - 0 (Receptors, Retinoic Acid) RN - 0 (Retinoid X Receptors) RN - 0 (Transcription Factors) RN - EC 3.1.- (Ribonucleases) SB - IM MH - Animals MH - *Gene Expression MH - Immunohistochemistry MH - Leydig Cells/chemistry MH - Male MH - Mice MH - RNA, Messenger/analysis MH - Receptors, Retinoic Acid/analysis/*genetics/*physiology MH - Retinoid X Receptors MH - Ribonucleases MH - Sertoli Cells/chemistry MH - *Spermatogenesis MH - Spermatozoa/chemistry MH - Testis/chemistry/*metabolism MH - Transcription Factors/analysis/*genetics/*physiology EDAT- 1998/06/12 00:00 MHDA- 1998/06/12 00:01 CRDT- 1998/06/12 00:00 PHST- 1998/06/12 00:00 [pubmed] PHST- 1998/06/12 00:01 [medline] PHST- 1998/06/12 00:00 [entrez] AID - 10.1095/biolreprod58.6.1351 [doi] PST - ppublish SO - Biol Reprod. 1998 Jun;58(6):1351-6. doi: 10.1095/biolreprod58.6.1351.