Chemokine-like factor 1 (CKLF1) exhibits chemotactic effects on leukocytes. Its amino acid sequence shares similarity with those of TARC/CCL17 and MDC/CCL22, the cognate ligands for CCR4. The chemotactic effects of CKLF1 for CCR4-transfected cells could be desensitized by TARC/CCL17 and markedly inhibited by PTX. CKLF1 induced a calcium flux in CCR4-transfected cells and fully desensitized a subsequent response to TARC/CCL17, and TARC/CCL17 could partly desensitize the response to CKLF1. CKLF1 caused significant receptor internalization in pCCR4-EGFP transfected cells. Taken together, CKLF1 is a novel functional ligand for CCR4. (c) 2005 Elsevier Inc. All rights reserved.
机构:
Scripps Res Inst, Div Vasc Biol VB5, Dept Cell Biol, La Jolla, CA 92130 USAScripps Res Inst, Div Vasc Biol VB5, Dept Cell Biol, La Jolla, CA 92130 USA
Degryse, B
;
de Virgilio, M
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机构:
Scripps Res Inst, Div Vasc Biol VB5, Dept Cell Biol, La Jolla, CA 92130 USAScripps Res Inst, Div Vasc Biol VB5, Dept Cell Biol, La Jolla, CA 92130 USA
机构:
Scripps Res Inst, Div Vasc Biol VB5, Dept Cell Biol, La Jolla, CA 92130 USAScripps Res Inst, Div Vasc Biol VB5, Dept Cell Biol, La Jolla, CA 92130 USA
Degryse, B
;
de Virgilio, M
论文数: 0引用数: 0
h-index: 0
机构:
Scripps Res Inst, Div Vasc Biol VB5, Dept Cell Biol, La Jolla, CA 92130 USAScripps Res Inst, Div Vasc Biol VB5, Dept Cell Biol, La Jolla, CA 92130 USA