Sci Adv:新生成的血管竟是癌细胞“越吃越肥”的罪魁祸首!

2017-10-27 佚名 medicalxpress

恶性肿瘤的生长需要营养,所以他们分泌一些因素促进新血管的形成来养活自己。研究人员早就知道,在低氧环境中肿瘤的中心会发送这些因素,近期,伊利诺斯州大学的研究人员的一项新研究发现,黑色素瘤边缘的茎状细胞非常可疑。新研究发表在《科学》杂志上。

恶性肿瘤的生长需要营养,所以他们分泌一些因素促进新血管的形成来养活自己。研究人员早就知道,在低氧环境中肿瘤的中心会发送这些因素,近期,伊利诺斯州大学的研究人员的一项新研究发现,黑色素瘤边缘的茎状细胞非常可疑。新研究发表在《科学》杂志上。

研究人员在报告中指出,“癌症的灵活性是一个大危险,癌症可以建立自己的生存网,协调自己的生存和传播能力。在实验室条件下,我们看到各种信号广泛的发出,我们还需要进一步的研究来确定不同类型癌症后援物的不同。”

此次研究以黑色素瘤为主要研究对象,研究人员发现瘤是高度弯曲的,被细胞紧紧压实。癌细胞边缘有一些像干细胞似的茎状细胞,它们具备传播癌细胞的功能,在此次研究中,研究人员重点观察了这些茎状细胞,发现了他们产生信号的化学物质组合。

研究小组在实验室中模拟了身体组织内环境,他们还比较了外围细胞弯曲的形状,以及平滑肿瘤细胞的不同,结果发现,暴露于紧张拓扑周边的细胞可以分泌更高水平的生长因子,促进血管生成和生长,为癌细胞提供生长和扩散所需要的养分。”

“这是一个有趣的发现,接下来,我们就要找到破坏心血管生成的方法,而且,我们还需要进一步的研究来确定这一机制是否也适用于其他癌症。”

原始出处:

Junmin Lee, Amr A. Abdeen, Jamila Hedhli, et.al. Melanoma topology reveals a stem-like phenotype that promotes angiogenesis. Science Advances  25 Oct 2017

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    2018-03-10 Drhzm308

    谢谢.学习了

    0

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    2017-10-29 大爰

    学习了谢谢分享!!

    0

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    2017-10-29 yxch36
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    2017-10-27 1e127dd4m40(暂无匿称)

    学习了

    0

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