Abstract:
:We tested the contribution of four staphylococcal components - PSM-α, PSM-β, δ-toxin, and PVL - in triggering macrophage secretion of tumor necrosis factor (TNF) and interleukins 6 (IL-6) and 12 (IL-12) by two prominent, circulating strains of community-associated, methicillin-resistant Staphylococcus aureus (CA-MRSA): LAC, USA300; MW2, USA400. RAW 264.7 murine macrophages were stimulated with live, antibiotic-exposed bacteria, and cytokine secretion was quantitated in supernatants. Deletion of PSM-α expression in LAC led to >50% reduction in macrophage TNF and IL-6 secretion and a 20% reduction in IL-12 secretion, while PSM-α deletion in MW2 did not significantly reduce macrophage TNF secretion but resulted in a 15-20% reduction in IL-6 and IL-12 secretion. Deletion of δ-toxin in either strain led to more than 50% reduction in macrophage IL-6 secretion and smaller reductions in macrophage TNF and IL-12 secretion (8-25%). Our data implicate both PSM-α and δ-toxin in stimulating macrophage cytokine responses to CA-MRSA bacteria.
journal_name
Cell Immunoljournal_title
Cellular immunologyauthors
Spentzas T,Kudumula R,Acuna C,Talati AJ,Ingram KC,Savorgnan F,Meals EA,English BKdoi
10.1016/j.cellimm.2011.03.009subject
Has Abstractpub_date
2011-01-01 00:00:00pages
46-53issue
1eissn
0008-8749issn
1090-2163pii
S0008-8749(11)00056-6journal_volume
269pub_type
杂志文章abstract::We have established a long-lasting heart allograft tolerance in H-2-incompatible combinations by intravenous injection of 10(8) allogeneic spleen cells followed by the administration of 200 mg/kg of cyclophosphamide (CP). When C57BL/10 mice (B10, H-2b) were primed iv with 1 x 10(8) viable spleen cells from naive BALB/...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1994.1142
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abstract::Antigen-independent adhesion of CD4+ T lymphocytes to Epstein-Barr virus transformed B cells is mainly mediated by LFA-1 (CD11a/CD18) and CD2 molecules. Low-affinity binding of resting T cells can be transiently upregulated by cross-linking of CD3-TCR (T cell receptor) complexes. This inside-out signaling influences i...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1993.1211
更新日期:1993-09-01 00:00:00
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journal_title:Cellular immunology
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doi:10.1006/cimm.1996.1074
更新日期:1997-02-25 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1997.1099
更新日期:1997-04-10 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1993.1243
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(86)90198-x
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(83)90333-7
更新日期:1983-02-01 00:00:00
abstract::Mice homozygous for either the generalized lymphoproliferative disease (gld) or the lymphoproliferation (lpr) nonallelic mutations develop similar syndromes combining systemic autoimmunity and lymphoproliferative disease. Though essentially recessive, the lpr and gld mutations may be expressed in the heterozygous stat...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1994.1195
更新日期:1994-07-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
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journal_title:Cellular immunology
pub_type: 杂志文章
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更新日期:2013-07-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(90)90078-6
更新日期:1990-01-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/j.cellimm.2016.06.001
更新日期:2016-10-01 00:00:00
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journal_title:Cellular immunology
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doi:10.1016/s0008-8749(03)00058-3
更新日期:2003-01-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(83)90332-5
更新日期:1983-02-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/0008-8749(84)90135-7
更新日期:1984-08-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(89)90124-x
更新日期:1989-12-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
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journal_title:Cellular immunology
pub_type: 杂志文章
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更新日期:2008-05-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
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更新日期:2019-02-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(86)90314-x
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journal_title:Cellular immunology
pub_type: 杂志文章
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journal_title:Cellular immunology
pub_type: 杂志文章
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journal_title:Cellular immunology
pub_type: 杂志文章
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journal_title:Cellular immunology
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/j.cellimm.2007.09.002
更新日期:2007-08-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1994.1114
更新日期:1994-04-15 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
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更新日期:1984-09-01 00:00:00