Immunity:揭示机体慢性炎症的microRNA分子开关

2014-10-22 佚名 生物谷

近日,来自犹他州大学的研究者通过研究鉴别出了两种控制慢性炎症的microRNA分子,该研究或有望在未来某一天帮助科学家们开发抑制人类致命性疾病的新型疗法,相关研究刊登于国际著名杂志Immunity上。研究者Ryan O'Connell表示,我们生活在一个人口老龄化的时代,当前的问题就是我们如何来预测并且抑制随着年龄增长而引发的一系列机体障碍。 文章中,研究人员想通过研究确定是否特殊的micr

近日,来自犹他州大学的研究者通过研究鉴别出了两种控制慢性炎症的microRNA分子,该研究或有望在未来某一天帮助科学家们开发抑制人类致命性疾病的新型疗法,相关研究刊登于国际著名杂志Immunity上。研究者Ryan O'Connell表示,我们生活在一个人口老龄化的时代,当前的问题就是我们如何来预测并且抑制随着年龄增长而引发的一系列机体障碍。

文章中,研究人员想通过研究确定是否特殊的microRNA分子可以在小鼠机体中被移除,动物们会自发形成慢性炎症,而且会在随后炎症引发的疾病中很早就发生死亡,比如癌症或自体免疫障碍。然而缺失第二种类型的microRNA分子的小鼠并不会发生慢性炎症,因此当一种microRNA分子促进炎症发生时另外一种microRNA分子则会抑制炎症发生,这就是人类机体调节有害状态的一种关键系统。

特殊类型的免疫细胞,比如辅助性滤泡T细胞,其可以促进抗体的产生来攻击我们机体的组织并且引发慢性炎症发生,研究者O'Connell表示,如今我们知道机体需要哪种细胞来作为microRNA分子的抑制剂,从而减少慢性炎性的症状,目前我们面临的一个问题是,是否接受特定microRNA抑制剂的慢性炎性病人会观察到其自身慢性炎症的指标水平在下降,进而抑制机体疾病的恶化。

此前研究显示,慢性炎症和特殊的疾病,比如糖尿病、肥胖和癌症等直接相关,而对于研究人员面临的巨大挑战则是慢性炎症会在较低水平发生,而且常常不会被检测到,但是特定的生物标志物,比如细胞因子或抗体水平的升高就会揭示机体慢性炎症的发生。最后研究者表示,很多人都是等出现了疾病症状才去看医生,然而开发新型疗法的目的就在于可以尽早地帮助预测病人是否患病并且有效治疗患者的疾病。

原始出处

Ruozhen Hu, Dominique A. Kagele, Thomas B. Huffaker, Marah C. Runtsch, Margaret Alexander, Jin Liu, Erin Bake, Wei Su, Matthew A. Williams, Dinesh S. Rao, Thomas Möller, Gwenn A. Garden, June L. Round, Ryan M. O’Connell.miR-155 Promotes T Follicular Helper Cell Accumulation during Chronic, Low-Grade Inflammation.Immunity.2014.

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    2015-03-04 xjy02
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    2014-10-24 zhouqu_8

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