Tat Protein Is an HIV-1-Encoded β-Chemokine Homolog That Promotes Migration and Up-Regulates CCR3 Expression on Human FcεRI+ Cells1
Tat Protein Is an HIV-1-Encoded β-Chemokine Homolog That Promotes Migration and Up-Regulates CCR3 Expression on Human FcεRI+ Cells1
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Tat 蛋白是一种 HIV-1 编码的 β-趋化因子同源物,可促进人 FcεRI+ 细胞迁移并上调 CCR3 表达1
作者:
A. de Paulis;R. De Palma;Luisa Di Gioia;Maria Carfora;N. Prevete;G. Tosi;R. Accolla;G. Marone
Human basophils and mast cells express the chemokine receptor CCR3, which binds the chemokines eotaxin and RANTES. HIV-1 Tat protein is a potent chemoattractant for basophils and lung mast cells obtained from healthy individuals seronegative for Abs to HIV-1 and HIV-2. Tat protein induced a rapid and transient Ca2+ influx in basophils and mast cells, analogous to β-chemokines. Tat protein neither induced histamine release from human basophils and mast cells nor increased IL-3-stimulated histamine secretion from basophils. The chemotactic activity of Tat protein was blocked by preincubation of FcεRI+ cells with anti-CCR3 Ab. Preincubation of Tat with a mAb anti-Tat (aa 1–86) blocked the migration induced by Tat. In contrast, a mAb specific for the basic region (aa 46–60) did not inhibit the chemotactic effect of Tat protein. Tat protein or eotaxin desensitized basophils to a subsequent challenge with the autologous or the heterologous stimulus. Preincubation of basophils with Tat protein up-regulated the level of CCR3 mRNA and the surface expression of the CCR3 receptor. Tat protein is the first identified HIV-1-encoded β-chemokine homologue that influences the directional migration of human FcεRI+ cells and the expression of surface receptor CCR3 on these cells.
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DOI:
10.1073/pnas.96.19.10881
发表时间:
1999
影响因子:
11.1
作者:
Saederup,N;Lin,YC;Dairaghi,DJ;Schall,TJ;Mocarski,ES
通讯作者:
Mocarski,ES
影响因子:
4.4
作者:
D. MacGlashan;J. White;S. K. Huang;Santa Jeremy Ono;J. Schroeder;L. Lichtenstein
通讯作者:
D. MacGlashan;J. White;S. K. Huang;Santa Jeremy Ono;J. Schroeder;L. Lichtenstein
DOI:
--
发表时间:
2002
期刊:
--
影响因子:
--
作者:
B. Vogel;Shuchen Lee;Axel Hi ldebrand;I. Craig;M. Pierschbacher;F. Wong-Staal;Erkki
通讯作者:
B. Vogel;Shuchen Lee;Axel Hi ldebrand;I. Craig;M. Pierschbacher;F. Wong-Staal;Erkki
DOI:
10.1056/nejm199301283280408
发表时间:
1993-01
期刊:
The New England journal of medicine
影响因子:
--
作者:
S. Galli
通讯作者:
S. Galli
影响因子:
4.4
作者:
Huamin Li;Tommy C. Sim;Rafeul Alam
通讯作者:
Huamin Li;Tommy C. Sim;Rafeul Alam