阿尔法-防御素结合扩大了人类腺病毒的热带性
Cheng Zhao1, Jessica M Porter1, Phillip C Burke1
1Department of Microbiology, University of Washington School of Medicine, Seattle, Washington, United States of America.
PLoS pathogens
|June 20, 2024
概括
哺乳动物的α-defensins (α-defensins) 可以意外地增强腺病毒感染. 这些免疫促进病毒通过一种新的途径与细胞结合,独立于已知的病毒受体,改变宿主热带性.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 细胞生物学 细胞生物学
背景情况:
- 哺乳动物的α-defensins (α-defensins) 是关键的先天免疫.
- 虽然通常是抗微生物的,α-defensins可以矛盾地促进某些病毒感染.
- 腺病毒 (HAdV) 是人类显著的病原体.
研究的目的:
- 研究α-defensins增强HAdV感染的机制.
- 为了确定α-defensins是否可以独立于已知的病毒受体调解HAdV结合.
- 探索α-defensins对HAdV热流的影响.
主要方法:
- 使用遗传方法来评估病毒受体和共受体在α-defensin介导的HAdV结合中的作用.
- 进行细胞培养实验,观察在存在α-defensins时的HAdV结合和感染.
- 实验评估了暴露于α-defensins的混合细胞群中的HAdV热带.
主要成果:
- 人类α-defensin介导的HAdV与细胞的结合不需要主要受体或整合素共受体.
- 然而,HAdV感染仍然依赖于整合素.
- α-defensins扩大了HAdV热带向非敏感细胞扩展,即使在混合细胞环境中.
结论:
- 存在一种新的HAdV结合途径,绕过正规病毒受体,并与受体介导入口并行运行.
- 这一途径有助于α-defensin增强的HAdV感染.
- 在体内,α-defensin的存在可能会将HAdV组织热带性决定从主要受体表达转移到整合素表达,特别是在肺部和肠道等粘膜组织中.
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