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PLOS Bio:“时钟疗法”——这种肿瘤抑制剂的发现将变革现有癌症疗法!

2017-12-08 佚名 medicalxpress

我们的身体有一个内部生物或“昼夜节律”的时钟,每天循环,并与太阳时间同步。在小鼠中进行的新研究表明,它可以帮助抑制癌症。这项由德国柏林Charité医科大学的AngelaRelógio博士及其同事于12月7日在开放获取期刊PLOS Biology上发表的研究假设,由于其调节的分子时间依赖过程的范围包括代谢,DNA修复和细胞周期,昼夜节律钟有潜力充当肿瘤抑制剂。

我们的身体有一个内部生物或“昼夜节律”的时钟,每天循环,并与太阳时间同步。在小鼠中进行的新研究表明,它可以帮助抑制癌症。这项由德国柏林Charité医科大学的AngelaRelógio博士及其同事于12月7日在开放获取期刊PLOS Biology上发表的研究假设,由于其调节的分子时间依赖过程的范围包括代谢,DNA修复和细胞周期,昼夜节律钟有潜力充当肿瘤抑制剂。

昼夜节律时钟与环境明暗周期同步,有助于协调代谢和行为模式,如休息和活动的日常周期。包括癌症在内的许多疾病都可能扰乱时钟,导致它横行。然而,当我们体内的细胞繁殖时,它们会遵循一个不同的计划,称为细胞周期,在细胞周期结束时,通过细胞分裂产生两个子细胞。许多癌症涉及功能失调或活动过度的细胞周期,这使得肿瘤细胞无法控制地繁殖。

研究小组发现,当他们在大约四分之一的人类肿瘤和两种称为INK4a和ARF的蛋白质(它们能够抑制癌症)中扰乱一种叫做RAS的蛋白质时,发现了生物钟和细胞周期。他们表明,已知控制细胞周期的RAS也控制昼夜节律,并通过INK4A和ARF对生物钟发挥其作用。他们的工作突出了生物钟作为细胞命运决策的调节器的重要作用,并进一步加强了生物钟作为防癌机制的功能。

Relógio在葡萄牙语中的意思是“钟”,他说:“根据我们的研究结果,在我们看来,这个时钟很可能是一种肿瘤抑制剂,对于癌细胞来说,它有利于规避昼夜节律。不能停止想知道昼夜节律时间是否应该被列为癌症的下一个潜在标志。”

Relógio及其同事的研究结果表明,复杂性的一个新层 - 内部时间 - 可能与癌症治疗有关,最近的研究提出使用时间疗法,其中睡眠和清醒时间被调整,试图重置病人的生物钟。鉴于此处所述的新发现和迄今为止发表的时间疗法研究,我们可能需要重新考虑癌症治疗,包括内部时间因素,以达到最佳治疗效果。

原始出处:

Rukeia El-Athman, Nikolai N. Genov, Jeannine Mazuch, et.al. The Ink4a/Arf locus operates as a regulator of the circadian clock modulating RAS activity. PLOS Biology

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    2018-09-19 mnda
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    2018-07-14 jklm09
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    2018-04-13 sunylz
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    2017-12-09 方舒

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