CLA对奶牛乳腺上皮细胞脂肪酸合成相关酶的影响
Heilongjiang Animal Science and Veterinary Medicine(2013)
Abstract
为了研究体外添加c9,t11共轭亚油酸(CLA)和t10,c12 CLA对奶牛乳腺细胞(BMECs)中脂肪酸(FA)合成关键酶基因mRNA转录和SCD酶指数的影响,试验采用组织块分离培养BMECs,两种CLA浓度分别为0,50,100,150μmol/L,作用细胞24 h后采用荧光定量PCR(QRT-PCR)对目的基因进行相对定量。结果表明:与对照组相比,50μmol/L c9,t11 CLA显著抑制BMECs中的ACC、FAS、D5和D6基因mRNA,但150μmol/L却显著促进;50μmol/L t10,c12 CLA显著上调了ACC、SCD5、D5和D6基因的mRNA转录水平,对FAS转录无影响(P>0.05),但150μmol/L显著受到抑制;CLA均抑制SCD1的转录,促进SCD5转录。C9,t11 CLA使SCD酶指数显著增加,t10,c12 CLA则相反。
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Key words
bovine mammary epithelial cell(BMEC),fluorescence quantitative PCR,conjugated linoleic acid(CLA),SCD indexes,transcription
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