PMID- 9341739 OWN - NLM STAT- MEDLINE DCOM- 19971113 LR - 20041117 IS - 0008-8749 (Print) IS - 0008-8749 (Linking) VI - 180 IP - 2 DP - 1997 Sep 15 TI - Inhibition of IL-10 protein synthesis induces major histocompatibility complex class II gene expression in class II-deficient patients. PG - 95-103 AB - Major histocompatibility complex (MHC) class II deficiency is an inherited autosomal recessive combined immunodeficiency, characterized by a lack of constitutive expression of the human leukocyte antigen (HLA) class II genes. The patients investigated in this study are histoidentical twin brothers with a new phenotype in MHC class II deficiency. Examination of HLA-D locus genes in their fractionated peripheral mononuclear cells (MNCs) revealed an unusual and uncoordinated mRNA pattern. Here we analyzed the distribution of pro- and anti-inflammatory cytokines expressed in these patients' adherent and nonadherent MNCs. We show that gene expression of IL-1 alpha, IL-1 beta, IL-6, granulocyte-colony-stimulating factor, and IL-10 was induced in both cell fractions, whereas increased mRNA levels of interferon-gamma and the inducible nitric oxide synthase were exclusively detected in the patients' nonadherent MNCs. As IL-10 is known to be able to downregulate transcription of MHC class II and expression of IL-10 in the patients' MNCs was increased, we investigated the regulatory function of this cytokine. Interestingly, inhibition of IL-10 protein synthesis with IL-10-specific antisense oligonucleotide DNA (IL-10-AS-ODN) induced HLA-D locus genes in these MHC class II-deficient patients. Exposure of the nonadherent cell fraction to IL-10-AS-ODN resulted in a profound induction of a previously absent DR beta 1 and DP alpha gene expression. HLA-DQ beta mRNA levels, however, were increased in both the adherent and the nonadherent MNC population. Albeit expression of HLA-D locus genes was inducible via inhibition of IL-10 translation, surface expression of HLA class II antigens on the patients' MNCs was essentially negative. The data presented support the concept of a coordinated network of pro- and anti-inflammatory cytokine regulation and this network obviously has a significant role in the cell-type-specific regulation of MHC class II expression. FAU - Hauber, I AU - Hauber I AD - Institute of Clinical and Molecular Virology, University Erlangen Nurnberg, Germany. iahauber@viro.med FAU - Wolf, H M AU - Wolf HM FAU - Samstag, A AU - Samstag A FAU - Pein, B AU - Pein B FAU - Kreil, T R AU - Kreil TR FAU - Gulle, H AU - Gulle H FAU - Fischer, M B AU - Fischer MB FAU - Eibl, M M AU - Eibl MM LA - eng PT - Case Reports PT - Journal Article PL - Netherlands TA - Cell Immunol JT - Cellular immunology JID - 1246405 RN - 0 (Cytokines) RN - 0 (HLA-D Antigens) RN - 0 (Oligonucleotides, Antisense) RN - 0 (RNA, Messenger) RN - 130068-27-8 (Interleukin-10) SB - IM MH - Cells, Cultured MH - Cytokines/physiology MH - *Gene Expression Regulation MH - *Genes, MHC Class II MH - HLA-D Antigens/*metabolism MH - Humans MH - Interleukin-10/*biosynthesis MH - Leukocytes, Mononuclear/physiology MH - Male MH - Oligonucleotides, Antisense/pharmacology MH - RNA, Messenger/genetics EDAT- 1997/10/28 00:00 MHDA- 1997/10/28 00:01 CRDT- 1997/10/28 00:00 PHST- 1997/10/28 00:00 [pubmed] PHST- 1997/10/28 00:01 [medline] PHST- 1997/10/28 00:00 [entrez] AID - S0008-8749(97)91170-9 [pii] AID - 10.1006/cimm.1997.1170 [doi] PST - ppublish SO - Cell Immunol. 1997 Sep 15;180(2):95-103. doi: 10.1006/cimm.1997.1170.