PMID- 12322894 OWN - NLM STAT- MEDLINE DCOM- 20030129 LR - 20190922 IS - 1046-7408 (Print) IS - 1046-7408 (Linking) VI - 48 IP - 1 DP - 2002 Jul TI - Possible roles for products of polymorphic MHC and linked olfactory receptor genes during selection processes in reproduction. PG - 34-42 AB - PROBLEM: Polymorphic genes of the human major histocompatibility complex [MHC; human leukocyte antigen (HLA)] are probably important in determining resistance to parasites and avoidance of inbreeding. We investigated whether HLA-associated sexual selection could also involve HLA-linked olfactory receptor (OR) genes, which might not only participate in olfaction-guided mate choice, but also in selection processes within the testis. METHOD OF STUDY: The testicular expression status of HLA class I molecules (by immunohistology) and HLA-linked OR genes (by transcriptional analysis) was determined. RESULTS: Various HLA class I heavy chains, but not beta2-microglobulin (beta2m), were expressed, mainly at the spermatocyte I stage. Of 17 HLA-linked OR genes analyzed, eight were found to be transcribed in the testis. They exhibited varying numbers of 5'- or 3'-non-coding exons as well as differential splicing. CONCLUSIONS: We suggest that testis-expressed polymorphic HLA and OR proteins are functionally connected and serve the selection of spermatozoa, enabling them to distinguish 'self from 'non-self [the sperm-receptor-selection (SRS) hypothesis]. FAU - Ziegler, Andreas AU - Ziegler A AD - Institut fur Immungenetik, Universitatsklinikum Charite, Humboldt-Universitat zu Berlin, Germany. andreas.ziegler@charite.de FAU - Dohr, Gotrfried AU - Dohr G FAU - Uchanska-Ziegler, Barbara AU - Uchanska-Ziegler B LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Denmark TA - Am J Reprod Immunol JT - American journal of reproductive immunology (New York, N.Y. : 1989) JID - 8912860 RN - 0 (Receptors, Odorant) SB - IM MH - Epithelium/metabolism MH - Humans MH - Major Histocompatibility Complex/*genetics/physiology MH - Male MH - Receptors, Odorant/*genetics/metabolism MH - Reproduction/*genetics MH - Sertoli Cells/metabolism MH - Spermatozoa/metabolism MH - Testis/metabolism EDAT- 2002/09/27 06:00 MHDA- 2003/01/30 04:00 CRDT- 2002/09/27 06:00 PHST- 2002/09/27 06:00 [pubmed] PHST- 2003/01/30 04:00 [medline] PHST- 2002/09/27 06:00 [entrez] AID - 10.1034/j.1600-0897.2002.01097.x [doi] PST - ppublish SO - Am J Reprod Immunol. 2002 Jul;48(1):34-42. doi: 10.1034/j.1600-0897.2002.01097.x.