在中国北京,对猫类泛白血病病毒菌株FPV-BJ-J2和FPV-BJ-J3 (T440A,N564S,A568G) 的隔离和进化分析
Xia Su1, Hongzhuan Zhou1, Wenqian Jiang1
1Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China.
Frontiers in veterinary science
|February 12, 2026
概括
猫类泛白血病病毒 (FPV) 演变显示,自2017年以来,像A91S这样的关键VP2突变增加了. 新的替代物可能会增强免疫逃避,影响FPV流行病学和疫苗.
科学领域:
- 病毒学 病毒学
- 分子进化分子进化
- 免疫学 免疫学 免疫学
背景情况:
- 猫类泛白血病病毒 (FPV) 是一种高度致命的DNA病毒.
- VP2蛋白对FPV的宿主范围和抗原性至关重要.
- 关键的VP2残留物替代与增加毒性和免疫逃避有关,但它们的进化模式尚不清楚.
研究的目的:
- 描述FPV VP2基因突变的模式和时间进化动态.
- 为了确定与FPV演变和潜在的免疫逃避相关的特定VP2替代.
主要方法:
- 全球FPV VP2基因序列从NCBI和新分离的菌株的分析.
- 多重序列对齐使用MAFFT.
- 使用IQ-TREE构建家族遗传树.
- 使用香农的突变分析.
主要成果:
- 在特定的核酸范围 (nt 111-411,nt 477-1,038,nt 1,500-1752) 确定了VP2超变区.
- 最高的峰在nt 271 (aa 91),对应于A91S替代,显示自2017年以来的频率增加.
- I101T的替代达到适应平衡,而残留232的替代下降.
- 发现了新型T440A替代物,与N564S和A568G同时发生,类似CPV-2c,可能增强免疫逃避.
结论:
- 该研究系统地揭示了关键FPV VP2残留物的时间进化特征.
- 这些发现为FPV分子流行病学提供了洞察力.
- 结果为优化FPV疫苗菌株提供了理论基础.
相关概念视频
What is Evolutionary History?
43.7K
Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth and provides evidence for evolution. However, both fossil and living organisms offer evidence that outlines Earth’s evolutionary history.
43.7K
Three-Dimensional Analysis of Strain
637
Three-dimensional strain analysis is crucial for understanding how materials deform under stress, particularly in elastic, homogeneous materials. This method employs principal stress axes to simplify complex stress states into more understandable forms. Subjected to stress, a small cubic element within a material either expands or contracts along these axes, transforming into a rectangular parallelepiped. This transformation effectively illustrates the material's deformation. The principal...
637
Evolutionary Psychology
1.0K
Evolutionary psychology explores the origins of human behavior and mental processes by framing them within the context of natural selection, a theory famously propounded by Charles Darwin. This field asserts that many behaviors common across human societies — ranging from instinctive fear reactions to complex social interactions — arose as evolutionary adaptations. These adaptations enhanced the survival and reproductive success of our ancestors, thereby becoming embedded in the...
1.0K
Bending of Curved Members - Strain Analysis
537
The mechanics of deformation in curved members, such as beams or arches, under bending moments, involve complex responses. When such a member, symmetric about the y-axis and shaped like a segment of a circle centered at point C, is subjected to equal and opposite forces, its curvature and surface lengths change significantly. This alteration results in the shift of the curvature's center from C to C', indicating a tighter curve.
The important part of bending analysis for such a member...
The important part of bending analysis for such a member...
537
Criticisms of the Evolutionary Perspective
380
In a study where individuals posing as strangers offered compliments and proposed casual sex to students, the responses differed significantly based on gender. Not a single woman accepted the proposal, while 70% of the men agreed. This outcome provides a useful scenario to explore through the lens of evolutionary psychology and social learning theory, highlighting the diverse perspectives on human sexual behaviors.
Evolutionary psychology provides one explanation for these findings, suggesting...
Evolutionary psychology provides one explanation for these findings, suggesting...
380
What are Viruses?
128.4K
Overview
128.4K


