Cancer Cell:康毅滨教授解析抗癌miRNA

2013-10-18 佚名 生物通

一类称作为microRNAs的分子有可能为癌症患者提供了两条途径来对抗他们的疾病。 来自普林斯顿大学的研究人员发现,能够抑制某些基因表达的小遗传物质——microRNAs或许既可以充当癌症的治疗靶点,也可以作为癌症转移的预测指标。这一研究发表在10月14日的《癌细胞》(Cancer Cell)杂志上。 文章的通讯作者是普林斯顿大学分子生物学系康毅滨(Yibin

一类称作为microRNAs的分子有可能为癌症患者提供了两条途径来对抗他们的疾病。

来自普林斯顿大学的研究人员发现,能够抑制某些基因表达的小遗传物质——microRNAs或许既可以充当癌症的治疗靶点,也可以作为癌症转移的预测指标。这一研究发表在10月14日的《癌细胞》(Cancer Cell)杂志上。

文章的通讯作者是普林斯顿大学分子生物学系康毅滨(Yibin Kang)博士,其早年毕业于复旦大学,2000年获得杜克大学遗传学博士学位,之后曾在纽约曼哈顿的史隆.凯特琳癌症研究中心进行博士后研究。2012年被破格晋升为普林斯顿大学终身正教授。并荣获了2012年度美国癌症研究学会杰出贡献奖。

康毅滨教授说,在大约70%的晚期癌症患者体内均会发生骨转移,MicroRNAs在对抗骨转移方面尤其有用。通常情况下随着新骨质材料的生长破骨细胞行使分解旧骨质的功能。在骨转移过程中肿瘤会侵入到骨骼中接管破骨细胞。这些细胞随后会加大力度,以比正常骨更新快得多的速度来分解骨骼,导致骨病损、骨折、神经受压以及强烈的疼痛。

“肿瘤利用了破骨细胞来作为强迫劳力,“康毅滨说。康毅滨与论文的第一作者、普林斯顿大学分子生物学系研究生Brian Ell,以及分别来自意大利和德国的科学家们展开合作,利用小RNAs治疗和监控了骨转移。

MicroRNAs可通过抑制破骨细胞蛋白质来减小强迫力,由此限制破骨细胞的数量。Ell和同事们观察发现,当注入MiR-141和miR-219时显示癌转移的骨骼病损显著减少。康毅滨说,这些研究结果表明这些microRNAs可以作为对抗骨转移的有效治疗靶标,或许也可以帮助医生来检测癌症骨转移的情况。来自人类患者的样本揭示另一组microRNAs:miR-16、miR-378,以及可溶性胞内粘附分子sICAM1水平增高与骨转移的发生之间存在强有力的联系。

在《Cancer Cell》杂志上的一篇附随评论文章中,来自印第安那大学的David Waning、Khalid Mohammad和Theresa Guise(未参与此项工作)写到:“这项研究表明我们对于miRNAs器官特异性功能和病理活性有了深入的认识,有可能促使改善诊断、治疗以及防止骨转移,并阐明了支持骨骼中肿瘤生长的骨微环境独特的一个方面。“

康毅滨表示,他希望最终能够将小鼠实验扩展至临床试验。“最终,我们期望能够帮助到患者,”他说。

原文检索:

Brian Ell,Laura Mercatali,Toni Ibrahim,Neil Campbell,Heidi Schwarzenbach,Klaus Pantel,Dino Amadori,Yibin Kang.Tumor-Induced Osteoclast miRNA Changes as Regulators and Biomarkers of Osteolytic Bone Metastasis.Cancer Cell 14 October 2013.

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    2014-03-12 维他命
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    2013-12-24 smallant2002
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    2014-05-27 hongbochen
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    2013-10-20 Homburg