农业生物技术学报2026，Vol.34Issue(6)：1195-1207,13.DOI:10.3969/j.issn.1674-7968.2026.06.006
RBPJ通过调控乳腺形态发生影响临床型奶牛乳房炎发展
RBPJ Influences the Development of Clinical Mastitis in Dairy Cows(Bos taurus)by Regulating Mammary Gland Morphogenesis
摘要
Abstract
Abnormality in the morphological structure of the mammary gland(MG)is a core pathological alteration in clinical mastitis(CM)in dairy cows(Bos taurus).However,the molecular regulatory mechanisms of morphogenesis remain incompletely understood in MG of dairy cows with CM.In this study,the biological processes(BPs)related to mammary morphogenesis,key differentially expressed proteins(DEPs),and their involved KEGG pathways were identified based on data-independent acquisition(DIA)proteomics and GO enrichment analyses of lactating MG tissues from healthy(control,Con)and CM-affected Holstein cows.Morphological changes were observed using hematoxylin-eosin(H&E)staining.The distribution characteristics and expression patterns of key candidate DEPs were analyzed using immunohistochemistry(IHC),immunofluorescence(IF),qRT-PCR,and Western blot.The results showed that a total of 11 morphogenesis-associated BPs and 40 DEPs were identified based on GO enrichment analysis.Among these,recombination signal binding protein for immunoglobulin kappa J region(RBPJ)was identified as a key protein regulating morphogenesis in CM.Pathway analysis indicated that RBPJ was involved in signaling pathways such as Notch signaling,viral carcinogenesis,and Epstein-Barr virus(EBV)infection.Compared with the Con group,the CM group exhibited collapsed mammary alveoli,disorganized epithelial cell distribution,and concomitant inflammatory cell infiltration.RBPJ was primarily localized in the cytoplasm of mammary epithelial cells.RBPJ mRNA and protein expression levels in the CM group were extremely significantly higher than those in the Con group(P＜0.01).These results demonstrated that RBPJ participated in regulating MG morphogenesis during CM via morphogenesis-related pathways,and its upregulated expression was positively correlated with the occurrence and progression of CM.This study provides a theoretical foundation for elucidating the function and molecular mechanisms of RBPJ in bovine CM.关键词
临床型乳房炎/DIA蛋白质组学/形态发生/Notch信号通路/RBPJKey words
Clinical mastitis/DIA proteomics/Morphogenesis/Notch signaling pathway/RBPJ分类
农业科技引用本文复制引用
陈娜,张博皓,蔡农,李建富,高禹萌,赵兴绪,张勇,张全伟..RBPJ通过调控乳腺形态发生影响临床型奶牛乳房炎发展[J].农业生物技术学报,2026,34(6):1195-1207,13.基金项目
甘肃省科技计划项目-基础研究创新群体项目(26JRRA006) （26JRRA006）
甘肃省高等学校产业支撑计划(2024CYZC-30) （2024CYZC-30）
国家自然科学基金-联合基金(U21A20262) （U21A20262）
甘肃省科技计划项目-优秀博士生项目(24JRRA676) （24JRRA676）
