PMID- 16595720 OWN - NLM STAT- MEDLINE DCOM- 20061003 LR - 20131121 IS - 1470-1626 (Print) IS - 1470-1626 (Linking) VI - 131 IP - 4 DP - 2006 Apr TI - Presence and regulation of messenger ribonucleic acids encoding components of the class II major histocompatibility complex-associated antigen processing pathway in the bovine corpus luteum. PG - 689-98 AB - Luteal cells express class II major histocompatibility complex (MHC) molecules and can stimulate T lymphocyte proliferation in vitro. However, it is unknown whether luteal cells express the intracellular components necessary to process the peptides presented by class II MHC molecules. The objective of the present study was to examine the expression and regulation of three major class II-associated antigen processing components--class II MHC-associated invariant chain (Ii), DMalpha and DMbeta--in luteal tissue. Corpora lutea were collected early in the estrous cycle, during midcycle and late in the estrous cycle, and at various times following administration of a luteolytic dose of prostaglandin F(2alpha) (PGF(2alpha)) to the cow. Northern analysis revealed the presence of mRNA encoding each of the class II MHC-associated antigen processing proteins in luteal tissue. Ii mRNA concentrations did not change during the estrous cycle, whereas DMalpha and DMbeta mRNA concentrations were highest in midcycle luteal tissue compared with either early or late luteal tissue. Tumor necrosis factor-alpha (TNF-alpha) reduced DMalpha mRNA concentrations in cultured luteal cells in the presence of LH or PGF(2alpha). DMalpha and DMbeta mRNA were also present in highly enriched cultures of luteal endothelial (CLENDO) cells, and DMalpha mRNA concentrations were greater in CLENDO cultures compared with mixed luteal cell cultures. Expression of invariant chain, DMalpha and DMbeta genes indicates that cells within the corpus luteum express the minimal requirements to act as functional antigen-presenting cells, and the observation that CLENDO cells are a source of DMalpha and DMbeta mRNA indicates that non-immune cells within the corpus luteum may function as antigen-presenting cells. FAU - Cannon, Matthew J AU - Cannon MJ AD - Department of Animal Sciences, The Ohio State University/Ohio Agricultural Research and Development Center, 1680 Madison Avenue, Wooster, Ohio 44691, USA. FAU - Davis, John S AU - Davis JS FAU - Pate, Joy L AU - Pate JL LA - eng GR - HD37550/HD/NICHD NIH HHS/United States GR - HD48754/HD/NICHD NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PL - England TA - Reproduction JT - Reproduction (Cambridge, England) JID - 100966036 RN - 0 (Antigens, Differentiation, B-Lymphocyte) RN - 0 (Histocompatibility Antigens Class II) RN - 0 (RNA, Messenger) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (invariant chain) RN - 9002-67-9 (Luteinizing Hormone) RN - B7IN85G1HY (Dinoprost) SB - IM MH - Animals MH - Antigen-Presenting Cells/*immunology MH - Antigens, Differentiation, B-Lymphocyte/*genetics MH - Blotting, Northern/methods MH - Cattle MH - Cells, Cultured MH - Corpus Luteum/*immunology MH - Dinoprost/pharmacology MH - Endothelial Cells/immunology MH - Estrous Cycle MH - Female MH - *Gene Expression Regulation, Developmental/drug effects MH - Histocompatibility Antigens Class II/*genetics MH - Luteinizing Hormone/pharmacology MH - RNA, Messenger/*analysis/metabolism MH - Reverse Transcriptase Polymerase Chain Reaction MH - Signal Transduction/*genetics MH - Stimulation, Chemical MH - Tumor Necrosis Factor-alpha/pharmacology EDAT- 2006/04/06 09:00 MHDA- 2006/10/04 09:00 CRDT- 2006/04/06 09:00 PHST- 2006/04/06 09:00 [pubmed] PHST- 2006/10/04 09:00 [medline] PHST- 2006/04/06 09:00 [entrez] AID - 131/4/689 [pii] AID - 10.1530/rep.1.00906 [doi] PST - ppublish SO - Reproduction. 2006 Apr;131(4):689-98. doi: 10.1530/rep.1.00906.