Immortalized bovine mammary epithelial cells express stem cell markers and differentiate in vitro

被引:14
|
作者
Hu, Han [1 ,2 ]
Zheng, Nan [1 ]
Gao, Haina [2 ]
Dai, Wenting [2 ]
Zhang, Yangdong [2 ]
Li, Songli [2 ]
Wang, Jiaqi [2 ]
机构
[1] Chinese Acad Agr Sci, Inst Anim Sci, State Key Lab Anim Nutr, Minist Agr,Milk Risk Assessment Lab, Beijing 100193, Peoples R China
[2] Chinese Acad Agr Sci, Inst Apicultural Res, Minist Agr, Key Lab Pollinating Biol, Beijing 100193, Peoples R China
关键词
bovine mammary epithelial cell; differentiation; immortalization; stem cell; MAC-T; GENE-EXPRESSION; LINE; ESTABLISHMENT; P63; MORPHOLOGY; LACTATION; NETWORKS; PROTEINS;
D O I
10.1002/cbin.10624
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
The bovine mammary epithelial cell is a secretory cell, and its cell number and secretory activity determine milk production. In this study, we immortalized a bovine mammary epithelial cell line by SV40 large T antigen gene using a retrovirus based on Chinese Holstein primary mammary epithelial cells (CMEC) cultured in vitro. An immortalized bovine mammary epithelial cell line surpassed the 50-passage mark and was designated the CMEC-H. The immortalized mammary epithelial cells grew in close contact with each other and exhibited the typical cobblestone morphology characteristic with obvious boundaries. The telomerase expression of CMEC-H has consistently demonstrated the presence of telomerase activity as an immortalized cell line, but the cell line never induced tumor formation in nude mice. CMEC-H expressed epithelial (cytokeratins CK7, CK8, CK18, and CK19), mesenchymal (vimentin), and stem/progenitor (CD44 and p63) cell markers. The induced expression of milk proteins, (S1)-casein, -casein, -casein, and butyrophilin, indicated that CMEC-H maintained the synthesis function of the mammary epithelial cells. The established immortalized bovine mammary epithelial cell line CMEC-H is capable of self-renewal and differentiation and can serve as a valuable reagent for studying the physiological mechanism of the mammary gland.
引用
收藏
页码:861 / 872
页数:12
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