促炎性细胞因子,I型干扰因子和专门的前溶解媒介标志着疫苗接种和营销对背景牛肉牛的影响
Hudson R McAllister1, Sarah F Capik2,3, Kelsey M Harvey4
1Veterinary Education, Research, and Outreach Program, Texas A&M University, Canyon, TX 79015, USA.
Veterinary sciences
|September 27, 2025
概括
通过拍卖市场销售的未接种疫苗的牛体显示出显著的免疫和代谢途径变化. 在牛肉小牛中进行断奶前接种疫苗可能会调节这些反应,在高压力过渡期间提高弹性.
科学领域:
- 兽医免疫学 兽医免疫学
- 动物基因组学 动物基因组学
- 文字转录学 (Transcriptomics) 是一个学科.
背景情况:
- 拍卖或未接种疫苗的牛在牛呼吸系统疾病 (BRD) 的风险更高.
- 这些管理实践对宿主免疫反应的确切影响仍然不清楚.
- 了解这些影响对于减轻BRD风险至关重要.
研究的目的:
- 根据疫苗接种状态和营销路线,确定牛肉小牛的特定基因组模式.
- 在高压过渡期间调查分子免疫场景.
- 为管理如何影响免疫弹性提供机制性见解.
主要方法:
- 一个分割图谱的随机受控试验,涉及41个临床健康的牛犊.
- 从一个较大的队列中分层随机选择 (n=81).
- 使用HISAT2和StringTie2.2,在五个时间点进行血液RNA的转录组分析.
主要成果:
- 通过拍卖 (NOVAX/AUCTION) 销售的未接种疫苗的牛在背景输入时表现出2809个不同表达的基因.
- 这些牛表现出免疫,炎症和代谢途径的激活,包括干扰素刺激的基因.
- 与未接种疫苗的同行相比,接种疫苗 (VAX/AUCTION) 调节了免疫激活,并保留了专门的前溶解媒介 (SPM) 基因表达.
结论:
- 营销途径和疫苗接种都在压力过渡期间显著塑造了牛的分子免疫格局.
- 断奶前的疫苗接种可能会调节宿主免疫反应,可能会增强性.
- 转录学为BRD风险减轻策略提供了宝贵的见解.
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