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- W973747610 abstract "目的:设计特异切割人胰腺癌8988s细胞株中突变型K-ras基因mRNA的核酸代酶(ribozyme)。方法:PCR扩增人胰腺癌细胞株8988s的K-ras基因第一外显子,克隆并测序,明确有否突变、突变类型,以该基因mRNA为靶分子,进行计算机二级结构预测分析,选择核酸代酶切点,并进行基因组同源性分析,设计理论上最佳的核酸代酶。结果:人胰腺癌8988s中K-ras基因12密码子有突变,突变类型为GGT→GTT,设计筛选了三种针对人胰腺癌8988s突变型K-ras mRNA的核酸代酶分子,其中一种为特异性的。结论:人胰腺癌8988s中K-ras突变位点可成为特异性核酸代酶切割位点,切割此位点的核酸代酶对野生型K-ras mRNA功能无影响,K-ras编码序列中第199、205、217位点也为核酸代酶切割的理想位点。" @default.
- W973747610 created "2016-06-24" @default.
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- W973747610 date "1998-01-01" @default.
- W973747610 modified "2023-09-24" @default.
- W973747610 title "特异性抗人胰腺癌细胞株8988s突变型K-ras mRNA核酸代酶的设计" @default.
- W973747610 hasPublicationYear "1998" @default.
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