PMID- 8778029 OWN - NLM STAT- MEDLINE DCOM- 19960916 LR - 20190512 IS - 0019-2805 (Print) IS - 1365-2567 (Electronic) IS - 0019-2805 (Linking) VI - 87 IP - 3 DP - 1996 Mar TI - The bacterial superantigen Staphylococcal enterotoxin B stimulates lymphocyte locomotor capacity during culture in vitro. PG - 428-33 AB - The bacterial superantigen Staphylococcal enterotoxin B (SEB) was investigated for its effects on lymphocyte locomotion in vitro. Culture of peripheral blood mononuclear cells (PBMC) for 24-72 hr in SEB (1-100 micrograms/ml) increased the proportion of lymphocytes in locomotor (polarized) morphology and capable of invading collagen gels, to the same extent as the established locomotor activator, anti-CD3 (alpha-CD3), though the conventional antigen, tetanus toxoid was ineffective. The cells responding to SEB were predominantly T cells. SEB had no effect on lymphocyte locomotion in short-term (45 min) assays, thus its effect is to stimulate growth-related locomotor capacity and it does not act as a chemoattractant. During culture of PBMC in SEB, the chemokines interleukin-8 (IL-8) and macrophage chemotactic protein-1 (MCP-1) were released into the culture medium. The presence of anti-IL-8, but not of anti-MCP-1, either during culture or added to SEB culture supernatants and tested in short-term assays, inhibited the development of polarization suggesting that IL-8, which is a lymphocyte chemoattractant, also plays a key role in SEB-induced locomotor activation. Among SEB-activated lymphocytes, CD45RO+CD45RA- lymphocytes showed enhanced locomotor responses, but a relation was not found between locomotor activity and the presence of cell surface CD69. FAU - Newman, I AU - Newman I AD - Department of Immunology, University of Glasgow, UK. FAU - Wilkinson, P C AU - Wilkinson PC LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Immunology JT - Immunology JID - 0374672 RN - 0 (Chemokine CCL2) RN - 0 (Enterotoxins) RN - 0 (Interleukin-8) RN - 0 (Superantigens) RN - 39424-53-8 (enterotoxin B, staphylococcal) SB - IM MH - Cell Movement/drug effects MH - Cells, Cultured MH - Chemokine CCL2/metabolism MH - Electrophoresis MH - Enterotoxins/*pharmacology MH - Humans MH - Immunophenotyping MH - Interleukin-8/metabolism MH - Leukocytes, Mononuclear/*drug effects/physiology MH - Lymphocyte Activation MH - *Staphylococcus aureus MH - Superantigens/*pharmacology MH - T-Lymphocytes/drug effects/physiology PMC - PMC1384112 EDAT- 1996/03/01 00:00 MHDA- 1996/03/01 00:01 PMCR- 1997/03/01 CRDT- 1996/03/01 00:00 PHST- 1996/03/01 00:00 [pubmed] PHST- 1996/03/01 00:01 [medline] PHST- 1996/03/01 00:00 [entrez] PHST- 1997/03/01 00:00 [pmc-release] AID - 10.1046/j.1365-2567.1996.491565.x [doi] PST - ppublish SO - Immunology. 1996 Mar;87(3):428-33. doi: 10.1046/j.1365-2567.1996.491565.x.