钙蛋白酶抑制蛋白(Calpastatin,CAST)专一抑制钙蛋白酶(Calpain,CAPN)活性,参与调节牛肉的嫩化及肌内蛋白的水解,其编码基因是肉质性状的主要候选基因。本研究根据牛CAST基因5'UTR区(GenBank No.AY834771)和3'UTR区(Gen Bank No...钙蛋白酶抑制蛋白(Calpastatin,CAST)专一抑制钙蛋白酶(Calpain,CAPN)活性,参与调节牛肉的嫩化及肌内蛋白的水解,其编码基因是肉质性状的主要候选基因。本研究根据牛CAST基因5'UTR区(GenBank No.AY834771)和3'UTR区(Gen Bank No.DQ991097)序列设计两对引物,用PCR-SSCP方法对鲁西黄牛和渤海黑牛共305个样本进行了单核苷酸多态性分析。结果显示,CAST基因5'UTR和3'UTR区存在PCR-SSCP多态,在5'UTR区存在6437(C/T)、6477(G/A)和6614(G/T)3个SNP位点,表现为AA、AB、BB、BC和AD 5种基因型;在3'UTR区存在359(T/C)和366(A/G)2个SNP位点,表现为EE、EF、FF和EG 4种基因型。经检验表明,鲁西黄牛和渤海黑牛均处于非Hardy-Weinberg平衡状态;群体遗传多态性分析表明这两种牛的多态信息含量均为中度多态。展开更多
Transfection of cDNA in 3'untranslated region of human nuclear factor for interleukin-6(NF-IL6 3'UTR)induced tumor suppression in a human hepatoma cell line.cDNA array analysis was used to reveal changes in ge...Transfection of cDNA in 3'untranslated region of human nuclear factor for interleukin-6(NF-IL6 3'UTR)induced tumor suppression in a human hepatoma cell line.cDNA array analysis was used to reveal changes in gene expression profile leading to tumor suppression The results indicate that this suppression was not due to activation of dsRNA-dependent protein kinase,nor to inactivation ofoncogenes; rather,all the changes in expression of known genes,induced by NF-IL6 3'UTR cDNA may be ascribed to the suppression of cellular malignancy.Therefore,our results imply that this 3'untranslated region may have played role of a regulator of gene expression profile.展开更多
基金supported by the National Natural Science Foundation of China grant(No.39970172)by the Creation Foundation from Shanghai Intsitutes for Biological Sciences.
文摘Transfection of cDNA in 3'untranslated region of human nuclear factor for interleukin-6(NF-IL6 3'UTR)induced tumor suppression in a human hepatoma cell line.cDNA array analysis was used to reveal changes in gene expression profile leading to tumor suppression The results indicate that this suppression was not due to activation of dsRNA-dependent protein kinase,nor to inactivation ofoncogenes; rather,all the changes in expression of known genes,induced by NF-IL6 3'UTR cDNA may be ascribed to the suppression of cellular malignancy.Therefore,our results imply that this 3'untranslated region may have played role of a regulator of gene expression profile.
