PMID- 15147347 OWN - NLM STAT- MEDLINE DCOM- 20040625 LR - 20181113 IS - 0009-9104 (Print) IS - 1365-2249 (Electronic) IS - 0009-9104 (Linking) VI - 136 IP - 3 DP - 2004 Jun TI - Constitutive expression of interleukin-18 and interleukin-18 receptor mRNA in tumour derived human B-cell lines. PG - 456-62 AB - Interleukin-18 (IL-18) is a pro-inflammatory cytokine involved in the Th1 immune response and expressed by a variety of cell types. IL-18 is a member of the IL-1 family and plays an important role in autoimmune diseases and inflammation. Using reverse transcriptase-polymerase chain reaction (RT-PCR) mRNA expression of IL-18, IL-18 receptor alpha (IL-18R alpha), and beta (IL-18R beta) were studied in tumour derived human B-cell lines. Furthermore, we investigated IL-18 protein secretion by using enzyme linked immunosorbent assay (ELISA). The results, as presented in this report, suggest that IL-18, IL-18R alpha, and IL-18R beta mRNA are constitutively and ubiquitously expressed in human B-cell lines, but secretion of the functional protein does not occur. We therefore speculate that IL-18 possibly affects B-cells through paracrine actions. FAU - Lorey, S L AU - Lorey SL AD - Laboratory of Cytokine Research, Department of Biology, University of West Florida, Pensacola, Florida 32514, USA. FAU - Huang, Y C AU - Huang YC FAU - Sharma, V AU - Sharma V LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Clin Exp Immunol JT - Clinical and experimental immunology JID - 0057202 RN - 0 (IL18R1 protein, human) RN - 0 (Interleukin-18) RN - 0 (Interleukin-18 Receptor alpha Subunit) RN - 0 (RNA, Messenger) RN - 0 (Receptors, Interleukin) RN - 0 (Receptors, Interleukin-18) SB - IM MH - B-Lymphocytes/*immunology MH - Cell Line, Tumor MH - Humans MH - Interleukin-18/*genetics MH - Interleukin-18 Receptor alpha Subunit MH - RNA, Messenger/*analysis MH - Receptors, Interleukin/*genetics MH - Receptors, Interleukin-18 MH - Reverse Transcriptase Polymerase Chain Reaction PMC - PMC1809060 EDAT- 2004/05/19 05:00 MHDA- 2004/06/26 05:00 PMCR- 2005/06/01 CRDT- 2004/05/19 05:00 PHST- 2004/05/19 05:00 [pubmed] PHST- 2004/06/26 05:00 [medline] PHST- 2004/05/19 05:00 [entrez] PHST- 2005/06/01 00:00 [pmc-release] AID - CEI2465 [pii] AID - 10.1111/j.1365-2249.2004.02465.x [doi] PST - ppublish SO - Clin Exp Immunol. 2004 Jun;136(3):456-62. doi: 10.1111/j.1365-2249.2004.02465.x.