PMID- 20803086 OWN - NLM STAT- MEDLINE DCOM- 20110520 LR - 20240204 IS - 0219-1032 (Electronic) IS - 1016-8478 (Linking) VI - 30 IP - 3 DP - 2010 Sep TI - MKP1 regulates the induction of MCP1 by Streptococcus pneumoniae pneumolysin in human epithelial cells. PG - 263-70 LID - 10.1007/s10059-010-0113-0 [doi] AB - Epithelial cells act as the first line of host defense against microbes by producing a range of different molecules for clearance. Chemokines facilitate the clearance of invaders through the recruitment of leukocytes. Thus, upregulation of chemokine expression represents an important innate host defense response against invading microbes such as Streptococcus pneumoniae. In this study, we report that the expression of Monocyte Chemotactic Protein 1 (MCP1) was highly induced in response to S. pneumoniae in vitro and in vivo. Among numerous virulence factors, pneumococcal pneumolysin was found to be the major factor responsible for this induction. Furthermore, MCP1 induction was mediated by the p38 mitogen-activated protein kinase (MAPK) whose activation was controlled by MAPK phosphatase 1 (MKP1). Therefore, this study reveals novel roles of pneumolysin in mediating MKP1 expression for the regulation of MCP1 expression in human epithelial cells. FAU - Shin, Hee-Sung AU - Shin HS AD - Department of Biotechnology and Bioinformatics, Korea University, Yeongi, 339-700, Korea. FAU - Yoo, In-Hwa AU - Yoo IH FAU - Kim, Yong-Jae AU - Kim YJ FAU - Lee, Ji-Yun AU - Lee JY FAU - Kim, Hyong-Bai AU - Kim HB FAU - Jin, Shouguang AU - Jin S FAU - Ha, Un-Hwan AU - Ha UH LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100823 PL - United States TA - Mol Cells JT - Molecules and cells JID - 9610936 RN - 0 (Bacterial Proteins) RN - 0 (CCL2 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (RNA, Small Interfering) RN - 0 (Streptolysins) RN - 0 (plY protein, Streptococcus pneumoniae) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) RN - EC 3.1.3.48 (Dual Specificity Phosphatase 1) SB - IM MH - Animals MH - Bacterial Proteins/metabolism MH - Cell Line MH - Chemokine CCL2/genetics/immunology/*metabolism MH - Dual Specificity Phosphatase 1/*metabolism MH - Epithelial Cells/immunology/*metabolism/microbiology/pathology MH - Gene Expression Regulation MH - Humans MH - Immunity, Innate MH - Mice MH - Mice, Inbred C57BL MH - RNA, Small Interfering/genetics MH - Streptococcal Infections/genetics/immunology/*metabolism MH - Streptococcus pneumoniae/*immunology/pathogenicity MH - Streptolysins/metabolism MH - Virulence MH - p38 Mitogen-Activated Protein Kinases/genetics/metabolism EDAT- 2010/08/31 06:00 MHDA- 2011/05/21 06:00 CRDT- 2010/08/31 06:00 PHST- 2010/05/03 00:00 [received] PHST- 2010/06/04 00:00 [accepted] PHST- 2010/06/03 00:00 [revised] PHST- 2010/08/31 06:00 [entrez] PHST- 2010/08/31 06:00 [pubmed] PHST- 2011/05/21 06:00 [medline] AID - S1016-8478(23)11508-1 [pii] AID - 10.1007/s10059-010-0113-0 [doi] PST - ppublish SO - Mol Cells. 2010 Sep;30(3):263-70. doi: 10.1007/s10059-010-0113-0. Epub 2010 Aug 23.