高致病性H7禽流感病毒的物种特异性出现是由和之间的内选择差异驱动的
Anja C M de Bruin1, Monique I Spronken1, Adinda Kok1
1Department of Viroscience, Erasmus Medical Center, Rotterdam, The Netherlands.
PLoS pathogens
|February 26, 2024
概括
高致病性禽流感病毒 (HPAIV) 在家禽中进行选择,但在野生水禽中没有. 病毒选择中的这种物种特异性差异与热带和复制有关,影响禽流感病毒的出现.
科学领域:
- 病毒学 病毒学
- 传染性疾病 传染性疾病
- 生态生态学 生态生态学
背景情况:
- 高致病性禽流感病毒 (HPAIV) 对家禽,野生动物和人类健康构成重大威胁.
- 高致病性禽流感病毒来自于通常在野生水禽中发现的低致病性禽流感病毒 (LPAIV).
- 为什么HPAIV出现在家禽中,而不是野生鸟类中,目前尚不清楚.
研究的目的:
- 研究一种假设,即宿主内选择有利于家禽的HPAIV,不利于野生水禽的HPAIV.
- 了解影响高度致病性禽流感病毒出现的特定物种因素.
主要方法:
- (家禽) 和 (野生水禽) 的同时注射H7N7 HPAIV和LPAIV的混合物.
- 使用RT-qPCR监测病毒选择和在拭子和组织中对血凝素蛋白标签的免疫染色.
- 随着时间的推移,分析宿主体内的差异性病毒种群.
主要成果:
- 在大多数共同注射的中 (4/6) 选择了HPAIV.
- 长期以来,LPAIV仍然是共注射子中占主导地位的病毒种群.
- 在子组织中早期检测到传染性HPAIV,但没有观察到HPAIV选择.
结论:
- 数据支持了在家禽中有利于HPAIV的物种特异性宿主内选择的假设.
- 禽类和野生水禽之间的HPAIV和LPAIV热带和复制的差异可能解释了这一现象.
- 了解这些特定物种的差异对于控制禽流感病毒的出现至关重要.
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