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首页> 外文期刊>Cell biology international. >Immortalized bovine mammary epithelial cells express stem cell markers and differentiate in vitro
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Immortalized bovine mammary epithelial cells express stem cell markers and differentiate in vitro

机译:永生化的牛乳腺上皮细胞表达干细胞标志物并分化体外

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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.
机译:牛乳腺上皮细胞是分泌细胞,其细胞数和分泌活动确定牛奶生产。在这项研究中,我们通过基于体外培养的血红蛋白初级乳腺上皮细胞(CMEC),通过SV40大T抗原基因通过SV40大T抗原基因永生牛乳腺上皮细胞系。永生化的牛乳腺上皮细胞系超过了50段段标记,并指定了CMEC-H。永生化的乳腺上皮细胞彼此紧密接触,并表现出具有明显边界的典型鹅卵石形态特征。 CMEC-H的端粒酶表达一致地证明了端粒酶活性作为永生化细胞系,但细胞系从未诱导裸鼠中的肿瘤形成。 CMEC-H表达上皮(细胞角蛋白CK7,CK8,CK18和CK19),间充质(Vimentin)和茎/祖(CD44和P63)细胞标记物。乳化蛋白的诱导表达(S1) - 酪蛋白, - 酪蛋白, - 酪蛋白和丁霉素表明CMEC-H保持了乳腺上皮细胞的合成函数。所建立的永生化牛乳腺上皮细胞系CMEC-H能够自我更新和分化,可用作用于研究乳腺生理机制的有价值的试剂。

著录项

  • 来源
    《Cell biology international.》 |2016年第8期|共12页
  • 作者单位

    Chinese Acad Agr Sci Inst Anim Sci State Key Lab Anim Nutr Minist Agr Milk Risk Assessment Lab;

    Chinese Acad Agr Sci Inst Anim Sci State Key Lab Anim Nutr Minist Agr Milk Risk Assessment Lab;

    Chinese Acad Agr Sci Inst Apicultural Res Minist Agr Key Lab Pollinating Biol Beijing 100193;

    Chinese Acad Agr Sci Inst Apicultural Res Minist Agr Key Lab Pollinating Biol Beijing 100193;

    Chinese Acad Agr Sci Inst Apicultural Res Minist Agr Key Lab Pollinating Biol Beijing 100193;

    Chinese Acad Agr Sci Inst Apicultural Res Minist Agr Key Lab Pollinating Biol Beijing 100193;

    Chinese Acad Agr Sci Inst Apicultural Res Minist Agr Key Lab Pollinating Biol Beijing 100193;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 细胞生物学;
  • 关键词

    bovine mammary epithelial cell; differentiation; immortalization; stem cell;

    机译:牛乳腺上皮细胞;分化;永生化;干细胞;

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