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小鼠免疫刺激后乳腺pIgRmRNA转录及乳特异性IgA含量的变化

DOI: 10.7668/hbnxb.2010.06.004, PP. 19-24

Keywords: pIgR,mRNA,IgA,乳腺

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Abstract:

为了探讨免疫刺激后昆明小白鼠乳腺pIgR基因mRNA转录和特异性IgA含量变化。选择48只健康受孕昆明小白鼠,分为A、B、C、D组,分别于分娩后第4天注射灭菌生理盐水、Lipase+灭菌生理盐水、空ISCOM和Lipase+LTB+ISCOM,每组注射12只,并于分娩后第8天和12天采集小鼠乳样、血样和乳腺组织,用间接ELISA法测定乳和血浆中的特异性IgA含量,用RealTime-PCR检测小鼠乳腺中pIgR基因的相对转录水平。结果表明,免疫刺激对小鼠血浆中特异性IgA的含量无显著性影响(P>0.05),但是免疫B组和D组中小鼠分娩后12d的乳中特异性IgA含量显著高于8d乳中的特异性IgA含量(P<0.05)。RealTime-PCR相对定量也表明,免疫B组和D组中小鼠分娩后12d的乳腺pIgR基因转录水平显著高于8d乳腺pIgR基因转录水平(P<0.05)。免疫刺激后小鼠乳腺pIgR基因转录水平的提高能增加乳中特异性IgA的含量。

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