耐力锻炼可调节端粒转录

2016-08-08 佚名 生物谷

一个研究小组成员在比利时发现,耐力运动在端粒转录的调控中可能发挥着重要作用。相关论文发表在《Science Advances》杂志上,研究人员对志愿者的锻炼情况进行了分析,他们发现的结果可能对人们有重要意义。 大多数人都知道健康饮食和有规律的锻炼可以间接地使人们能更健康的生活,但直到现在也没有任何证据表明,这样做可直接影响人的衰老和寿命。在这个新的研究工作中,研究人员称他们发现耐力运动释放的化学

一个研究小组成员在比利时发现,耐力运动在端粒转录的调控中可能发挥着重要作用。相关论文发表在《Science Advances》杂志上,研究人员对志愿者的锻炼情况进行了分析,他们发现的结果可能对人们有重要意义。

大多数人都知道健康饮食和有规律的锻炼可以间接地使人们能更健康的生活,但直到现在也没有任何证据表明,这样做可直接影响人的衰老和寿命。在这个新的研究工作中,研究人员称他们发现耐力运动释放的化学物质会产生一类分子,这类分子会促进端粒长得更长,从而就会延缓衰老。

端粒是染色体重复RNA序列(TERRA)两端的“帽子”。先前的研究表明,端粒长度是长寿的一个指标,或者更具体地说端粒跟衰老相关。有较长端粒的人寿命一般比平均水平要长,而端粒短的人寿命比较短。

为了了解更多关于运动和端粒长度之间的联系,研究人员做了一项实验,他们要求10名志愿者连续骑45分钟的自行车锻炼。研究人员在志愿者锻炼前后抽取了每个志愿者的血样并对肌肉组织进行了活检,然后在两个半小时后重复了一次。

通过比较锻炼前后的样本研究人员发现,TERRA分子的前体细胞有所增加,腺苷酸活化蛋白激酶(AMPK)的活性也有所增加,AMPK是一种酶,这种酶是PGC-1的一部分(之前的研究已经发现,它与NRF1相互作用,存在端粒中)。这些发现表明,这种类型的运动激活过程被认为可促进端粒延长,从而减缓衰老过程。

研究人员认为,锻炼可延缓衰老,而一些其它的因素,如饮食、遗传,以及一些行为如吸烟、药物使用或从事冒险等行为对寿命的影响非常大。

原始出处

Aurélie Diman1,*, Joanna Boros1,*,†, Florian Poulain1, Julie Rodriguez2, Marin Purnelle1,2, Harikleia Episkopou1, Luc Bertrand3, Marc Francaux2, Louise Deldicque2,‡ and Anabelle Decottignies1.Nuclear respiratory factor 1 and endurance exercise promote human telomere transcription.Science Advances.2016

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    2016-09-02 mjldent
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    2016-08-11 tundra

    怎么个冒险?

    0

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    2016-08-09 mandy4573

    正在学习

    0

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    2016-08-09 刘煜

    体育锻炼好处多。

    0

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    2016-08-08 1dd8c52fm63(暂无匿称)

    学习学习!

    0

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    2016-08-08 忠诚向上

    有意义的文章

    0

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