Interaction of Bordetella pertussis Adenylate Cyclase with CD11b/CD18

Interaction of Bordetella pertussis Adenylate Cyclase with CD11b/CD18
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百日咳博德特菌腺苷酸环化酶与 CD11b/CD18 的相互作用

DOI:
--
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发表时间:
2003
影响因子:
4.8
通讯作者:
C. Leclerc
C. Leclerc
中科院分区:
生物学2区
文献类型:
--
作者:
Mohammed El;C. Bauche;J. Loucká;Radim Osicka;P. Šebo;D. Ladant;C. Leclerc

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腺苷酸环化酶毒素(CyaA)是百日咳杆菌产生的主要毒力因子之一。CyaA属于毒素蛋白家族中的重复序列,需要翻译后脂肪酰化作用才能在靶细胞膜上形成阳离子选择性通道并渗透到细胞质中。我们最近已经证明CyaA使用αMβ2整合素(CD 11b/CD 18)作为特异性细胞受体。在这里,我们表明,CyaA的酰化所需的生产和紧密的相互作用的毒素与表达CD 11b的细胞。此外,我们证明,催化结构域是不需要的CyaA的CD 11b的结合和CyaA的主要整合素相互作用的结构域位于其甘氨酸/谷氨酸丰富的重复区。这些数据首次破译了CyaA与CD 11b阳性细胞的相互作用,并为理解百日咳杆菌与先天性和适应性免疫系统的相互作用开辟了新的前景。
Adenylate cyclase toxin (CyaA) is one of the major virulence factors produced by Bordetella pertussis, the whooping cough agent. CyaA belongs to the repeat in toxin protein family and requires a post-translational fatty acylation to form cation-selective channels in target cell membranes and to penetrate into cytosol. We have demonstrated recently that CyaA uses the αMβ2 integrin (CD11b/CD18) as a specific cellular receptor. Here we show that the acylation of CyaA is required for a productive and tight interaction of the toxin with cells expressing CD11b. In addition, we demonstrate that the catalytic domain is not required for binding of CyaA to CD11b and that the main integrin interacting domain of CyaA is located in its glycine/aspartate-rich repeat region. These data decipher, for the first time, the interaction of CyaA with CD11b-positive cells and open new prospects for understanding the interaction of Bordetella pertussis with innate and adaptive immune systems.
DOI: 10.1073/pnas.85.20.7734
发表时间: 1988-10
影响因子: 11.1
作者:
S. D. Wright;Jeffrey I. Weitz;A. J. Huang;S. Levin;Samuel C. Silverstein;J. Loike
通讯作者: S. D. Wright;Jeffrey I. Weitz;A. J. Huang;S. Levin;Samuel C. Silverstein;J. Loike
百日咳博德特氏菌腺苷酸环化酶毒素抑制单核细胞氧化反应。
DOI: --
发表时间: 1987
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Pearson,RD;Symes,P;Conboy,M;Weiss,AA;Hewlett,EL
通讯作者: Hewlett,EL
DOI: 10.1016/s0021-9258(18)68596-5
发表时间: 1988-05
期刊: The Journal of biological chemistry
影响因子: --
作者:
Dario C. Altieri;T. S. Edgington
通讯作者: Dario C. Altieri;T. S. Edgington