401. 白发与黑色素瘤:干细胞命运的抉择 episode artwork

EPISODE · Oct 26, 2025 · 18 MIN

401. 白发与黑色素瘤:干细胞命运的抉择

from 知为谁 · host 知为谁

该文件提供了一个概述,介绍了东京大学医学科学研究所的一项研究发现,该研究探索了白发和黑色素瘤(一种皮肤癌)之间的联系。研究结果表明,这两种看似不相关的现象实际上是色素干细胞对 DNA 损伤的不同反应所导致的不同结果。具体来说,当这些干细胞受到如 X 射线等细胞毒性原代损伤时,它们会经历一个称为“衰老耦合分化”(seno-differentiation)的保护性过程,从而导致干细胞耗竭和头发变白,这被认为是移除潜在有害细胞的一种机制。然而,当暴露于某些致癌原(如紫外线 B)时,干细胞会绕过这种保护机制,并保留自我更新能力,倾向于形成黑色素瘤。这项发表在《自然细胞生物学》上的研究,识别了决定这些对抗性命运的分子回路,为理解组织衰老和癌症之间的关系提供了一个概念框架。内容来源:https://www.ims.u-tokyo.ac.jp/imsut/en/about/press/page_00079.html

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401. 白发与黑色素瘤:干细胞命运的抉择

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