Sci Transl Med:ALS的潜在新治疗途径

2014-08-11 佚名 生物谷

哈佛大学干细胞研究所(HSCI)科学家在Science Translational Medicine杂志上公布的一份报告,对于寻求肌萎缩侧索硬化症(ALS)的真正治疗方法,起到了突破性推动作用。 干细胞与再生生物学(HSCRB)的Kevin Eggan和他的同事,在实验室里证明了用定制干细胞来造制造人类疾病模型,可能有一天会替代动物疾病模型。 这项新的研究也提示以作其他治疗用途的临床试验化

哈佛大学干细胞研究所(HSCI)科学家在Science Translational Medicine杂志上公布的一份报告,对于寻求肌萎缩侧索硬化症(ALS)的真正治疗方法,起到了突破性推动作用。

干细胞与再生生物学(HSCRB)的Kevin Eggan和他的同事,在实验室里证明了用定制干细胞来造制造人类疾病模型,可能有一天会替代动物疾病模型

这项新的研究也提示以作其他治疗用途的临床试验化合物可能是治疗ALS的候选药物。哈佛大学的研究人员发现,基因干预这些药物作用靶点(前列腺素受体),能将ALS动物模型存活时间延长5-10%。

HSCI干细胞生物学家和美国马萨诸塞州总医院和波士顿儿童医院正准备开展一期临床试验,针对一种已经批准了的癫痫药物开展ALS疾病治疗研究,研究已经发现该药物可以降低受ALS影响的运动神经元的电兴奋。

在2007年的论文中,Eggan和同事证明在ALS小鼠模型中,神经胶质细胞参与了运动神经元退变。并于次年,研究人员报告说,同样的事情(神经胶质细胞参与了运动神经元退变)在由患者干细胞制成的人运动神经元中也存在,并发现前列腺素分子可能在胶质细胞中扮演一定作用。

如今,研究人员报告说,他们已经证实了神经胶质细胞前列腺素受体的变化在ALS中的作用,运用遗传和化学干预实验,他们发现了前列腺素受体的变化在ALS中的作用。他们还报告说,当受体被阻断时,由神经胶质细胞所造成的ALS损害被减小。

这个最新的研究,由Eggan等人首先在平板上中利用人类运动神经元完成,然后再在ALS小鼠模型中继续开展。结果发现利用干细胞造就的疾病模型可以预测整体动物中所发生的事情,更重要的是,研究明确了ALS治疗的一个重要的靶标。如果我们能抑制ALS病人这种受体(前列腺素受体),我们可以减缓疾病的进展,这将是一个巨大的一步。

Eggan说:在ALS情况下的神经胶质细胞(神经胶质细胞攻击运动神经元)的一个特征是它们具有前列腺素类受体的高表达。删除神经胶质细胞中的受体,能延长ALS小鼠寿命。

另外,运用人类干细胞产生的ALS运动神经元进行的实验还表明,如果我们用化学物质抑制该受体,这些细胞将失去对运动神经元的毒性。

原始出处:

de Boer AS1, Koszka K2, Kiskinis E2, Suzuki N2, Davis-Dusenbery BN2, Eggan K3.Genetic validation of a therapeutic target in a mouse model of ALS.Sci Transl Med. 2014 Aug 6;6(248):248ra104. doi: 10.1126/scitranslmed.3009351.

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    2015-07-07 docwu2019
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    2014-10-10 zyzyyan

    ALs已经都进展到治疗的层面了,希望能有突破

    0

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