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淋病奈瑟菌菌株P9不透明变体的相对毒力

Comparative virulence of opacity variants of Neisseria gonorrhoeae strain P9.

作者信息

Virji M, Everson J S

出版信息

Infect Immun. 1981 Mar;31(3):965-70. doi: 10.1128/iai.31.3.965-970.1981.

Abstract

The invasive properties of nine variants of Neisseria gonorrhoeae strain P9 known to vary in their surface composition have been investigated. Relative virulence was evaluated by their cytotoxic effect on Chang epithelial cell monolayers. Piliated variants P9-2 (with alpha pili) and P9-20 (with beta pili plus protein II) showed increased ability to kill the target cells compared with the prototype P9-1 (lacking pili and additional outer membrane proteins). Two nonpiliated variants, P9-11 (with proteins IIa and IId) and P9-19 (with proteins II and IIc), were also relatively more virulent compared with P9-1. Enhanced attachment was exhibited by both piliated and some nonpiliated variants: beta-piliated P9-20 (with protein II; molecular weight, 29,000) and nonpiliated P9-16 (with protein IIb; molecular weight, 28,000) were the most effective in adherence to the target monolayers.

摘要

对已知表面成分不同的淋病奈瑟菌菌株P9的9种变体的侵袭特性进行了研究。通过它们对Chang上皮细胞单层的细胞毒性作用来评估相对毒力。与原型P9-1(缺乏菌毛和额外的外膜蛋白)相比,有菌毛的变体P9-2(有α菌毛)和P9-20(有β菌毛加蛋白II)显示出更强的杀死靶细胞的能力。两种无菌毛变体P9-11(有蛋白IIa和IId)和P9-19(有蛋白II和IIc)与P9-1相比也具有相对更强的毒力。有菌毛和一些无菌毛变体均表现出增强的黏附能力:有β菌毛的P9-20(有蛋白II;分子量29,000)和无菌毛的P9-16(有蛋白IIb;分子量28,000)在黏附靶细胞单层方面最有效。

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