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兔白细胞来源的天然肽抗生素MCP-1和MCP-2对病毒的直接灭活作用。

Direct inactivation of viruses by MCP-1 and MCP-2, natural peptide antibiotics from rabbit leukocytes.

作者信息

Lehrer R I, Daher K, Ganz T, Selsted M E

出版信息

J Virol. 1985 May;54(2):467-72. doi: 10.1128/JVI.54.2.467-472.1985.

Abstract

Six homologous peptides were purified to homogeneity from rabbit granulocytes or alveolar macrophages and tested for their ability to inactivate herpes simplex virus type 1 (HSV-1). Two of the peptides, MCP-1 and MCP-2, showed considerable in vitro neutralizing activity, whereas four structurally homologous peptides (NP-3a, NP-3b, NP-4, and NP-5) were relatively ineffective. Inactivation of HSV-1 by MCP-1 or MCP-2 depended on peptide concentration and on the time, temperature, and pH of the incubation. HSV-2, vesicular stomatitis virus, and influenza virus A/WSN were also susceptible to direct neutralization by MCP-1 or MCP-2, whereas cytomegalovirus, echovirus type 11, and reovirus type 3 were not. We speculate that MCP-1 and MCP-2, peptides that are abundant in rabbit granulocytes and lung macrophages, may contribute to antiviral defenses by mediating the direct inactivation of HSV-1 and selected other viruses.

摘要

从兔粒细胞或肺泡巨噬细胞中纯化出六种同源肽并使其达到均一性,然后检测它们灭活1型单纯疱疹病毒(HSV-1)的能力。其中两种肽,即MCP-1和MCP-2,表现出相当强的体外中和活性,而四种结构同源肽(NP-3a、NP-3b、NP-4和NP-5)则相对无效。MCP-1或MCP-2对HSV-1的灭活取决于肽的浓度以及孵育的时间、温度和pH值。HSV-2、水疱性口炎病毒和甲型流感病毒A/WSN也易被MCP-1或MCP-2直接中和,而巨细胞病毒、11型艾柯病毒和3型呼肠孤病毒则不然。我们推测,在兔粒细胞和肺巨噬细胞中大量存在的MCP-1和MCP-2肽,可能通过介导HSV-1及其他某些病毒的直接灭活而有助于抗病毒防御。

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