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Cell Stem Cell:皮肤癌起始、生长及恶化的分子机制

2015-01-13 佚名 生物谷

鳞状细胞癌是第二大常见的皮肤癌,每年在全世界都会有超过50万人深受该疾病的影响;而癌症干细胞是存在于许多癌症中的一小部分癌细胞,包括皮肤癌症干细胞等,这些干细胞可以促进癌症发展,使得癌症对疗法产生耐受性从而使患者化疗失败,然而目前研究人员对于调节癌症干细胞的机制却知之甚少。 近日,一篇发表于国际杂志Cell Stem Cell上的研究论文中,来自布鲁塞尔自由大学的研究人员通过研究发现,Twi

鳞状细胞癌是第二大常见的皮肤癌,每年在全世界都会有超过50万人深受该疾病的影响;而癌症干细胞是存在于许多癌症中的一小部分癌细胞,包括皮肤癌症干细胞等,这些干细胞可以促进癌症发展,使得癌症对疗法产生耐受性从而使患者化疗失败,然而目前研究人员对于调节癌症干细胞的机制却知之甚少。

近日,一篇发表于国际杂志Cell Stem Cell上的研究论文中,来自布鲁塞尔自由大学的研究人员通过研究发现,Twist1可以调节皮肤肿瘤的生长、癌症干细胞的功能抑制肿瘤的恶化;研究者Benjamin Beck表示,我们利用遗传小鼠来进行研究,阐明Twist1控制肿瘤起始,癌症干细胞的功能以及肿瘤恶化的分子机制。

Twist1并不在正常皮肤中进行表达,Twist1的剔除可以抑制皮肤癌的发生,这就表明其在肿瘤形成过程中发挥着重要作用,研究者很惊讶地发现Twist1在肿瘤形成的早期阶段扮演着重要角色,而此前他们认为Twist1仅可以刺激肿瘤恶化和转移。

不同水平的Twist1对于肿瘤的起始及进展非常必要,低水平的Twist1是良性肿瘤发生所必需的,而高水平的Twist1则对于肿瘤的维持及癌症干细胞功能的调节非常重要。同时研究人员也揭示了Twist1可以被不同的分子机制所调节并且发挥不同的功能,Twist1在调节癌症干细胞功能上并不依赖于p53。

总的来讲,本文研究研究人员揭示了广为人知的可以调节肿瘤进展的分子Twist1的新型功能,为后期研究人员理解癌症发生、发展、转移以及恶化提供了新的研究线索,也为开发针对癌症的靶向疗法提供了新的希望。

原始出处

Benjamin Beck, Gaëlle Lapouge, Sandrine Rorive.Different Levels of Twist1 Regulate Skin Tumor Initiation, Stemness, and Progression.Cell Stem Cell.2014.

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    2015-06-11 维他命
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    2015-01-13 116.226.156.**

    癌干细胞?

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