畜牧兽医学报 ›› 2026, Vol. 57 ›› Issue (1): 486-499.doi: 10.11843/j.issn.0366-6964.2026.01.043

• 临床兽医 • 上一篇    下一篇

克柔念珠菌诱导奶牛乳腺上皮细胞microRNA差异表达分析

苗宇航1,2(), 丁涛1,2, 辛杰1,2, 马文妍1,2, 杜军1,2()   

  1. 1.宁夏大学生命科学学院,银川 750021
    2.西部特色生物资源保护与利用教育部重点实验室,银川 750021
  • 收稿日期:2025-02-24 出版日期:2026-01-23 发布日期:2026-01-26
  • 通讯作者: 杜军 E-mail:myh6943@126.com;dujun@nxu.edu.cn
  • 作者简介:苗宇航,硕士生,主要从事动物病原生物学研究,E-mail:myh6943@126.com
  • 基金资助:
    宁夏回族自治区自然科学基金项目(2024AAC03118);国家自然科学基金项目(32160044)

Differential Expression Analysis of microRNA in Bovine Mammary Epithelial Cells Induced by Candida krusei

MIAO Yuhang1,2(), DING Tao1,2, XIN Jie1,2, MA Wenyan1,2, DU Jun1,2()   

  1. 1.College of Life Sciences,Ningxia University,Yinchuan 750021,China
    2.Key Laboratory of Protection and Utilization of Biological Resources with Western Characteristics,Ministry of Education,Yinchuan 750021,China
  • Received:2025-02-24 Online:2026-01-23 Published:2026-01-26
  • Contact: DU Jun E-mail:myh6943@126.com;dujun@nxu.edu.cn

摘要:

非编码小RNA(microRNA)可参与奶牛乳腺固有免疫应答,可作为病原菌感染宿主细胞和奶牛乳腺炎的潜在生物标志物之一,但克柔念珠菌(Candida krusei)感染奶牛乳腺上皮细胞(MAC-T)后microRNA的表达模式尚不清晰。本研究旨在分析Candida krusei诱导MAC-T中的差异表达microRNA(DEmicroRNA)及其功能,为揭示Candida krusei感染MAC-T的标志microRNA和后续研究microRNA调控宿主细胞免疫应答的调控机制提供基础。利用转录组(RNA-Seq)测序技术和生物信息学方法对克柔念珠菌感染(感染复数=1)后的MAC-T进行microRNA测序、DEmicroRNA分析及GO和KEGG功能富集分析。结果表明,在正常组和感染组MAC-T中共检测出1 465个microRNA,相比于正常组,感染组筛选出16个表达显著上调和7个表达量显著下调的microRNA。应用TargetScan和miRanda软件对11个极显著性差异表达microRNA进行靶基因预测,共预测到6 739个靶基因。GO和KEGG功能富集分析结果表明,上述11个极显著性差异表达microRNA可通过免疫相关信号通路而调节奶牛乳腺炎症,进一步分析发现,显著下调的bta-miR-2377,显著上调的bta-miR-2285i可能通过潜在靶基因参与MAPK、NF-κB、Toll样受体信号通路进而调控宿主细胞炎症的发生与发展过程。在Candida krusei诱导的奶牛乳腺上皮细胞中获得了23个DEmicroRNA,可能通过潜在靶基因调控奶牛乳腺上皮细胞炎症反应的发生与发展过程,为揭示microRNA调控克柔念珠菌诱导奶牛乳腺炎的致病机制提供了科学基础。

关键词: 克柔念珠菌, 奶牛乳腺上皮细胞, microRNA, 生物信息学分析, 差异表达microRNA

Abstract:

Non-coding small RNAs (microRNAs) can be involved in the innate immune response of bovine mammary glands and can serve as potential biomarkers for pathogen infection of host cells and bovine mastitis. However, the expression pattern of microRNAs in bovine mammary epithelial cells (MAC-T) after Candida krusei infection remains unclear. This study aims to analyze the differentially expressed microRNAs (DEmicroRNAs) in MAC-T induced by Candida krusei and their functions, providing a basis for revealing the marker microRNAs of Candida krusei infection in MAC-T and for subsequent research on the regulatory mechanism of microRNAs in regulating the immune response of host cells. Utilizing RNA-Seq sequencing technology and bioinformatics methods, microRNA sequencing, DEmicroRNA analysis, and GO and KEGG functional enrichment analysis were conducted on MAC-T cells after infection with Candida krusei (infection multiplicity=1). A total of 1 465 microRNAs were detected in MAC-T cells of both the normal group and the infection group. Compared with the normal group, 16 microRNAs were significantly upregulated and 7 were significantly downregulated in the infection group. TargetScan and miRanda software were used to predict the target genes of the 11 microRNAs with extremely significant differential expression, and a total of 6 739 target genes were predicted. The results of GO and KEGG functional enrichment analysis indicated that the 11 microRNAs with extremely significant differential expression could regulate bovine mammary gland inflammation through immune-related signaling pathways. Further analysis revealed that the significantly downregulated bta-miR-2377 and the significantly upregulated bta-miR-2285i might participate in the MAPK, NF-κB, and Toll-like receptor signaling pathways through potential target genes, thereby regulating the occurrence and development of host cell inflammation. Twenty-three DEmicroRNA are obtained in Candida krusei induced bovine mammary epithelial cells, which may regulate the occurrence and development of inflammatory response in bovine mammary epithelial cells through potential target genes, and provide a scientific basis for revealing the pathogenic mechanism of microRNA regulating Candida krusei induced bovine mastitis.

Key words: Candida krusei, bovine mammary epithelial cells, microRNA, bioinformatics analysis, differentially expressed microRNAs

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