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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Sequence-specific antitumor activity of a phosphorothioate oligodeoxyribonucleotide targeted to human C-raf kinase supports an antisense mechanism of action in vivo
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Sequence-specific antitumor activity of a phosphorothioate oligodeoxyribonucleotide targeted to human C-raf kinase supports an antisense mechanism of action in vivo

机译:靶向人C-raf激酶的硫代磷酸酯寡脱氧核糖核苷酸的序列特异性抗肿瘤活性支持体内的反义作用机制

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摘要

To determine the mechanism of action re- sponsible for the in vivo antitumor activity of a phosphoro- thioate antisense inhibitor targeted against human C-raf kinase (ISIS 5132, also known as CGP69846A), a series of mismatched phosphorothioate analogs of ISIS 5132 or CGP69846A were synthesized and characterized with respect to hybridization affinity, inhibitory effects on C-raf gene expression in vitro, and antitumor activity in vivo. Incorpora- tion of a single mismatch into the sequence of ISIS 5132 or CGP69846A resulted in reduced hybridization affinity toward C-raf RNA sequences and reduced inhibitory activity against C-raf expression in vitro and tumor growth in vivo.
机译:为了确定针对人C-raf激酶的硫代磷酸酯反义抑制剂(ISIS 5132,也称为CGP69846A)的体内抗肿瘤活性的作用机理,一系列错配的ISIS 5132或CGP69846A硫代磷酸酯类似物合成并就杂交亲和力,体外对C-raf基因表达的抑制作用以及体内抗肿瘤活性进行了表征。将单个错配并入ISIS 5132或CGP69846A的序列会导致对C-raf RNA序列的杂交亲和力降低,并且对体外C-raf表达和体内肿瘤生长的抑制活性降低。

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