title: Class II antigen-associated invariant chain mRNA in mouse small intestine.
abstract: MHC class II antigen-associated invariant (Ii) chain mRNA appears in mouse small intestine during postnatal development. Ii chain cDNA hybridizes to RNA from epithelial sheets dissociated from the lamina propria with EDTA. Of several mouse organs tested, only bone marrow and spleen contain higher levels of Ii chain mRNA than small bowel. Ii chain mRNA is not detected in stomach, colon, duodenum, testis, liver, submandibular gland, or L-cell RNA; brain contains a cross-reactive but uncharacterized sequence. cDNA amplification using primers specific for both Ii31 and Ii41 chain mRNAs showed that both forms occur in small intestine. These results support the conclusion that regulation of the class II Ii chain gene is associated with the ontogeny of intestinal immunity.
authors.affiliation: Cell Biology Unit, Shriners Burns Institute, Boston, MA 02114.
authors.forename: A J
authors.initials: AJ
authors.lastname: Ouellette
authors.forename: D
authors.initials: D
authors.lastname: Frederick
authors.forename: S J
authors.initials: SJ
authors.lastname: Hagen
authors.forename: J D
authors.initials: JD
authors.lastname: Katz
mesh_terms: D000818:Animals; D001483:Base Sequence; D003001:Cloning, Molecular; D004247:DNA / Q000235:genetics / Q000302:isolation & purification; D004848:Epithelium / Q000276:immunology; D005091:Exons; D000949:Histocompatibility Antigens Class II / Q000235:genetics*; D007421:Intestine, Small / Q000276:immunology*; D046911:Macromolecular Substances; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D008969:Molecular Sequence Data; D009838:Oligodeoxyribonucleotides / Q000138:chemical synthesis; D009928:Organ Specificity; D011061:Poly A / Q000235:genetics; D012313:RNA / Q000235:genetics; D012333:RNA, Messenger / Q000235:genetics
chemical_list: D000949:Histocompatibility Antigens Class II; D046911:Macromolecular Substances; D009838:Oligodeoxyribonucleotides; D012333:RNA, Messenger; D011061:Poly A; D012313:RNA; D004247:DNA