Campylobacter jejuni induces secretion of proinflammatory chemokines from human intestinal epithelial cells.
Campylobacter jejuni is a common cause of diarrhea in humans. While the pathogenic mechanisms of C. jejuni are not completely understood, host inflammatory responses are thought to be contributing factors. In this report, C. jejuni 81-176 is shown to up-regulate chemokines essential to inflammatory responses. Growth-related oncogene alpha (GROalpha), GROgamma, macrophage inflammatory protein 1, monocyte chemoattractant protein 1 (MCP-1), and gamma interferon-inducible protein 10 (gammaIP-10) mRNA transcription in INT-407 cells was enhanced within 4 h of bacterial exposure. Infection with viable campylobacters was necessary for sustained chemokine transcription and was NF-kappaB dependent. GROalpha, gammaIP-10, and MCP-1 chemokine secretions were confirmed by immunological assays.
Hu
Lan
L
Naval Medical Research Center, 503 Robert Grant Avenue, Silver Spring, Maryland 20910-7500, USA.
Hickey
Thomas E
TE
D016123:Campylobacter jejuni / Q000472:pathogenicity*; D018932:Chemokine CCL2 / Q000235:genetics / Q000378:metabolism; D054407:Chemokine CCL4; D054360:Chemokine CXCL1; D054357:Chemokine CXCL10; D018925:Chemokines / Q000235:genetics / Q000378:metabolism*; D019743:Chemokines, CXC / Q000235:genetics / Q000378:metabolism; D006801:Humans; D036341:Intercellular Signaling Peptides and Proteins / Q000235:genetics / Q000378:metabolism; D007413:Intestinal Mucosa / Q000276:immunology* / Q000378:metabolism; D019402:Macrophage Inflammatory Proteins / Q000235:genetics / Q000378:metabolism; D016328:NF-kappa B / Q000502:physiology; D012333:RNA, Messenger / Q000032:analysis; D014158:Transcription, Genetic
C475829:CXCL1 protein, human; D018932:Chemokine CCL2; D054407:Chemokine CCL4; D054360:Chemokine CXCL1; D054357:Chemokine CXCL10; D018925:Chemokines; D019743:Chemokines, CXC; D036341:Intercellular Signaling Peptides and Proteins; D019402:Macrophage Inflammatory Proteins; D016328:NF-kappa B; D012333:RNA, Messenger