Attachment of Streptococcus pyogenes to mammalian cells.

Attachment of Streptococcus pyogenes to mammalian cells.
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化脓性链球菌附着于哺乳动物细胞。

DOI:
10.1093/clinids/5.supplement_4.s670
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发表时间:
1983
期刊:
Reviews of infectious diseases
影响因子:
--
通讯作者:
Whitnack,E
Whitnack,E
中科院分区:
--
文献类型:
--
作者:
Beachey,EH;Simpson,WA;Ofek,I;Hasty,DL;Dale,JB;Whitnack,E

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积累的证据表明,脂磷壁酸 (LTA) 主要参与 A 族链球菌与宿主上皮细胞的附着。 LTA 与多种宿主细胞的结合是由 LTA 分子的糖脂末端介导的,糖脂末端可以与链球菌表面蛋白形成离子复合物,从而允许 LTA 重新定向,使其一些脂质末端暴露于生物体表面。白蛋白能够阻断链球菌与上皮细胞的粘附,并与 LTA-M 蛋白结合,但不与脱酰基化的 LTA-M 蛋白复合物结合,这支持了脂质末端保持自由与细胞膜受体相互作用的观点。细胞膜受体似乎由口咽上皮细胞表面纤连蛋白分子上的脂质结合区域组成。尽管链球菌在无血清系统中表现出与吞噬细胞的 LTA 敏感结合,但在血清存在的情况下,它们不会;相反,吞噬细胞的识别需要与链球菌细胞表面结合的补体。纤维蛋白原与富含 M 链球菌表面的 M 蛋白的结合特异性阻断调理补体成分对生物体的识别。富含 M 的链球菌与吞噬细胞的附着需要开发专门针对未被纤维蛋白原阻断的 M 蛋白区域的抗体。
Accumulated evidence indicates that lipoteichoic acid (LTA) is centrally involved in the attachment of group A streptococci to epithelial cells of the host. The binding of LTA to a variety of host cells is mediated by the glycolipid end of the LTA molecule, which can form ionic complexes with streptococcal surface proteins, permitting the reorientation of the LTA to expose some of its lipid ends toward the surface of the organism. The ability of albumin to block the adherence of streptococci to epithelial cells and to bind to LTA-M protein but not deacylated LTA-M protein complexes supports the idea that the lipid ends remain free to interact with cell membrane receptors. The cell membrane receptors appear to consist of a lipid-binding region(s) on fibronectin molecules on the surfaces of oropharyngeal epithelial cells. Although streptococci exhibit LTA-sensitive binding to phagocytic cells in a serum-free system, in the presence of serum, they do not; rather, complement bound to the streptococcal cell surface is required for recognition by phagocytes. The binding of fibrinogen to the M protein on the surface of M-rich streptococci specifically blocks the recognition of the organisms by opsonic complement components. The attachment of M-rich streptococci to phagocytic cells requires the development of antibodies directed specifically toward regions of M protein not blocked by fibrinogen.
肝素、冷不溶性球蛋白和纤维蛋白原在血浆肝素可沉淀部分形成中的相互作用
DOI: --
发表时间: 1977
影响因子: 6.7
作者:
N. Stathakis;M. Mosesson
通讯作者: M. Mosesson
DOI: 10.1093/infdis/143.3.325
发表时间: 1981-01-01
影响因子: 6.4
作者:
BEACHEY, EH
通讯作者: BEACHEY, EH
DOI: 10.1084/jem.141.5.990
发表时间: 1975-05-01
期刊: The Journal of experimental medicine
影响因子: --
作者:
Ofek I;Beachey EH;Jefferson W;Campbell GL
通讯作者: Campbell GL
链球菌脂磷壁酸与血清白蛋白上的脂肪酸结合位点的结合。
DOI: 10.1016/s0021-9258(18)43705-2
发表时间: 1980
期刊: The Journal of biological chemistry
影响因子: --
作者:
W. A. Simpson;I. Ofek;E. Beachey
通讯作者: E. Beachey
血清白蛋白的脂肪酸结合位点作为链球菌脂磷壁酸的膜受体类似物
DOI: 10.1128/iai.29.1.119-122.1980
发表时间: 1980
影响因子: 3.1
作者:
W. A. Simpson;I. Ofek;E. Beachey
通讯作者: E. Beachey