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首页> 外文期刊>Cancer Cell >Lack of sustained regression of c-MYC-induced mammary adenocarcinomas following brief or prolonged MYC inactivation.
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Lack of sustained regression of c-MYC-induced mammary adenocarcinomas following brief or prolonged MYC inactivation.

机译:短暂或长时间的MYC失活后,c-MYC诱导的乳腺腺癌缺乏持续的消退。

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摘要

Recent studies of oncogene dependence in conditional transgenic mice have suggested the exciting possibility that transient or prolonged MYC inactivation may be sufficient for sustained reversal of the tumorigenic process. In contrast, we report here that following oncogene downregulation, the majority of c-MYC-induced mammary adenocarcinomas grow in the absence of MYC overexpression. In addition, residual neoplastic cells persist from virtually all tumors that do regress to a nonpalpable state and these residual cells rapidly recover their malignant properties following MYC reactivation or spontaneously recur in a MYC-independent manner. Thus, MYC-induced mammary tumor cells subjected to either brief or prolonged MYC inactivation remain exquisitely sensitive to its oncogenic effects and characteristically progress to a state in which growth is MYC-independent.
机译:对条件转基因小鼠中致癌基因依赖性的最新研究表明,瞬时或长时间的MYC失活可能足以持续逆转致瘤过程,这一令人振奋的可能性。相反,我们在这里报告说,在癌基因下调后,大多数c-MYC诱导的乳腺腺癌在没有MYC过表达的情况下生长。另外,残留的赘生性细胞几乎从所有确实消退到不可触及状态的肿瘤中持续存在,并且这些残留的细胞在MYC激活后迅速恢复其恶性特性,或以独立于MYC的方式自发复发。因此,经历了短暂或长期的MYC失活的MYC诱导的乳腺肿瘤细胞对其致癌作用仍然非常敏感,并且特征性地发展到其中的生长独立于MYC的状态。

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