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Nat Commun:科学家开发“超级”多肽将药物送达脑损伤部位

2016-06-30 生物谷 生物谷

来自美国Sanford Burnham Prebys Medical Discovery Institute的科学家们最近发表了一项最新研究进展,他们开发了一种用于创伤性脑损伤治疗的新技术。相关研究结果发表在国际学术期刊Nature Communication上,该研究为将药物送达脑部损伤部位提供了一种新方法。在美国每年有大约250万人因车祸,坠落或暴力因素遭受创伤性脑损伤。目前对于急性脑损伤的干

来自美国Sanford Burnham Prebys Medical Discovery Institute的科学家们最近发表了一项最新研究进展,他们开发了一种用于创伤性脑损伤治疗的新技术。相关研究结果发表在国际学术期刊Nature Communication上,该研究为将药物送达脑部损伤部位提供了一种新方法。

在美国每年有大约250万人因车祸,坠落或暴力因素遭受创伤性脑损伤。目前对于急性脑损伤的干预方法主要通过降低颅内压维持血流,但是至今没有得到批准的药物能够阻止引起二次损伤的级联事件的发生。

现在处于临床前试验阶段用于减轻初始损伤后二次脑损伤的小分子化合物有一百多种,这些候选药物能够阻断炎症,高水平自由基,神经元过度兴奋以及细胞凋亡信号等引起二次损伤的事件的发生。

文章作者表示:“我们的目标是找到能够代替直接脑部药物注射的新方法,直接注射具有侵入性经常会导致并发症的发生。我们开发了一种多肽能够进行药物运输,这就意味着通过静脉注射给药仍然可以有足够的药物到达损伤位置发挥治疗作用。”

他们开发的这种CAQK多肽能够与脑细胞周围的硫酸软骨素蛋白聚糖结合,这些糖修饰蛋白的含量会在脑损伤之后出现增加。研究人员证明他们不仅可以通过CAQK将药物尺寸的分子以及纳米颗粒送达急性脑损伤小鼠模型的损伤区域,他们还检测了该多肽与发生损伤的人类脑组织样本的结合能力,结果表明仍然具有相同的特异性。

除此之外通过将这种多肽与一些成像仪器能够检测到的成像材料结合在一起还可以开发鉴定脑损伤的新工具。由于该多肽能够运输装载着生物大分子的纳米颗粒,因此还可以用于生物酶或者基因沉默治疗方法。

目前该研究团队正在动物模型上进行该技术的进一步验证。


原始出处:

Mann AP, Scodeller P, Hussain S, Joo J, Kwon E, Braun GB, Mölder T, She ZG, Kotamraju VR, Ranscht B, Krajewski S, Teesalu T, Bhatia S, Sailor MJ, Ruoslahti E.A peptide for targeted, systemic delivery of imaging and therapeutic compounds into acutebrain injuries.Nat Commun. 2016 Jun 28;7:11980. doi: 10.1038/ncomms11980.


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    2016-08-23 liuli5079
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    2016-11-22 liye789132251
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    2016-07-02 fusion

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