Proc Natl Acad Sci:吗啉代低聚物(MO)能改变疟疾的疟原虫的RNA转录,克服耐药

2015-09-09 MedSci MedSci原创

耶鲁大学的研究人员发现,改变疟原虫的基因表达可以抑制或减慢其在机体血液细胞中的生长,这一现象有可能抑制耐药菌株的出现。且该研究在美国国家科学院院刊得以提出和解释。全球范围内针对疟疾已经进行了巨大的努力,并耗费了国家庞大的财力 。它带给人们的打击是致命的和毁灭性的。在非洲,每年有近一百万5岁以下的儿童死于疟疾。在治疗疟疾的过程中,我们也发现了疟原虫对药物和杀虫剂会出现耐药性,这无疑对治疗过程带来了困

耶鲁大学的研究人员发现,改变疟原虫的基因表达可以抑制或减慢其在机体血液细胞中的生长,这一现象有可能抑制耐药菌株的出现。且该研究在美国国家科学院院刊得以提出和解释。


全球范围内针对疟疾已经进行了巨大的努力,并耗费了国家庞大的财力 。它带给人们的打击是致命的和毁灭性的。在非洲,每年有近一百万5岁以下的儿童死于疟疾。在治疗疟疾的过程中,我们也发现了疟原虫对药物和杀虫剂会出现耐药性,这无疑对治疗过程带来了困难。

诺贝尔奖获得者、耶鲁大学的分子生物学家Sidney Altman教授认为,在东南亚等地,耐药菌株的存在是一个非常严峻的问题。

疟疾是疟原虫寄生于人体所引起的传染病,经疟蚊叮咬或输入带疟原虫者的血液而感染。一旦疟原虫进入人体,则这种寄生虫则会在肝脏红细胞中进行繁殖并造成感染。如果患者未能得到及时治疗,则该疾病会导致患者机体重要器官的血供受到破坏,严重者会危及生命。每年疟疾患者有将近200万人,死亡人数约有600000名。

在他们的研究中,Altman教授和他的同事特别强调了疟原虫生物学特点的重要性,尤其是它的基因作用。这可能是一个寻找新型药物靶点的有效途径。他们着重关注了疟原虫的RNA,因为RNA携带DNA的指令并合成相应的蛋白质,合成的相应蛋白质对疟原虫的生长发育至关重要。试验中,他们发现了改变恶性疟原虫(对人类危害最大的一种疟原虫)RNA转录的一种简便易行的方式。
研究人员使用吗啉代低聚物(MO)来改变恶性疟原虫的RNA转录过程。并向大家展示了这项使用MOs可以干扰恶性疟原虫基因转录RNA的方式可行,进而干扰疟原虫对血液细胞的破坏。甚至对于耐药菌株也同样适用。

因此,未来的研究可以针对这一方向,不仅可以减少患疟疾的患者人数,又可避免耐药性的产生。

原始出处:

Targeting protein translation, RNA splicing, and degradation by morpholino-based conjugates in Plasmodium falciparum, Aprajita Garg et al.,Proc Natl Acad Sci, 8 Sep 2015

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    2016-06-13 lishizhe
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    2015-11-09 linlin2312
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    2016-08-12 liye789132251
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    2015-12-15 mjldent
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    2016-02-09 qidongfanjian
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    2015-09-11 sunylz

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