Latency associated peptide has in vitro and in vivo immune effects independent of TGF-beta1.
Latency associated peptide has in vitro and in vivo immune effects independent of TGF-beta1.
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潜伏期相关的肽具有与TGF-BETA1无关的体外和体内免疫作用。
DOI:
10.1371/journal.pone.0001914
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发表时间:
2008-04-02
期刊:
影响因子:
3.7
通讯作者:
Marsh CB
中科院分区:
文献类型:
--
作者:
Ali NA;Gaughan AA;Orosz CG;Baran CP;McMaken S;Wang Y;Eubank TD;Hunter M;Lichtenberger FJ;Flavahan NA;Lawler J;Marsh CB
Latency Associated Peptide (LAP) binds TGF-β1, forming a latent complex. Currently, LAP is presumed to function only as a sequestering agent for active TGF-β1. Previous work shows that LAP can induce epithelial cell migration, but effects on leukocytes have not been reported. Because of the multiplicity of immunologic processes in which TGF-β1 plays a role, we hypothesized that LAP could function independently to modulate immune responses. In separate experiments we found that LAP promoted chemotaxis of human monocytes and blocked inflammation in vivo in a murine model of the delayed-type hypersensitivity response (DTHR). These effects did not involve TGF-β1 activity. Further studies revealed that disruption of specific LAP-thrombospondin-1 (TSP-1) interactions prevented LAP-induced responses. The effect of LAP on DTH inhibition depended on IL-10. These data support a novel role for LAP in regulating monocyte trafficking and immune modulation.
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影响因子:
15.9
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通讯作者:
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