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奶牛乳腺上皮细胞的二维和三维培养及培养后酪蛋白基因的表达

DOI: 10.3969/j.issn.1006-267x.2012.06.024

Keywords: 奶牛乳腺上皮细胞,二维培养,三维培养,酪蛋白

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Abstract:

本试验研究了二维和三维培养对奶牛乳腺上皮细胞(BMEC)形态与β-酪蛋白、κ-酪蛋白、αs1-酪蛋白基因表达的影响。试验采用内蒙古地区3头5岁泌乳期健康荷斯坦奶牛的乳腺组织,将BMEC经3代培养纯化后分别进行二维和三维培养,观察不同培养模式下细胞的生长形态,测定β-酪蛋白、κ-酪蛋白、αs1-酪蛋白基因的表达量。结果表明:2种培养模式下的BMEC呈现不同的细胞形态,二维培养的BMEC呈典型铺路石样细胞形态,三维培养的BMEC则形成了类腺泡的聚集物和管腔结构。利用三维培养的BMEC的αs1-酪蛋白基因的表达量显著地高于二维培养(P<0.05),三维培养的BMEC的β-酪蛋白和κ-酪蛋白基因的表达量极显著地高于二维培养(P<0.01)。结果提示,三维培养的BMEC3种酪蛋白基因的表达量均高于二维培养,三维培养的BMEC在形态上呈现的特点与在体内更加接近。

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