Nature Communications:研究发现小胶质细胞全新“示综技术”

2013-05-02 Nature Communication dxy

小胶质细胞新示踪技术 瑞典隆德大学分子神经遗传学分部研究组组长Johan Jakobsson和他的同事已经在《Nature Communication》上发表了他们关于小胶质细胞的新近研究结果。长久以来人们认为小胶质细胞是免疫系统在脑部疾病中首先发挥防御功能的细胞。他们迅速迁移到感染区域并释放能够保护神经细胞和清除受损组织的大量分子。但新的研究发现小胶质细胞不仅能够保护神经细胞,它还在维持神经细


小胶质细胞新示踪技术

瑞典隆德大学分子神经遗传学分部研究组组长Johan Jakobsson和他的同事已经在《Nature Communication》上发表了他们关于小胶质细胞的新近研究结果。
长久以来人们认为小胶质细胞是免疫系统在脑部疾病中首先发挥防御功能的细胞。他们迅速迁移到感染区域并释放能够保护神经细胞和清除受损组织的大量分子。但新的研究发现小胶质细胞不仅能够保护神经细胞,它还在维持神经细胞基本功能方面起到重要作用。
Johan Jakbsson说:“目前,研究者对于小胶质细胞具体如何工作知之甚少。同时研究者非常好奇并且对于进一步了解小胶质细胞可能导致的治疗多种脑部疾病药物的全新发展给予很高的期望。”
目前研究已经能够成功辨别小胶质细胞结构上的差异,因此可以使小胶质细胞可视化并且研究他们的行为。通过插入一个由微观分子”小RNA-9“所控制的荧光蛋白,研究者目前可以区分小胶质细胞并监测大鼠和小鼠模型中脑部小胶质细胞的功能。
Johan Jakobsson 解释道:“这代表了我们在研究小胶质细胞技术领域真正的进步。现在我们可以用一种以前不可能的方法看到小胶质细胞。我和我的同事现在希望能够用这种技术研究小胶质细胞在不同疾病模型中的作用,比如帕金森病和中风,人们相信相信小胶质细胞在这些疾病中起到重要作用。”
胶质细胞相关的拓展阅读:


Visualization and genetic modification of resident brain microglia using lentiviral vectors regulated by microRNA-9.
Abstract
Functional studies of resident microglia require molecular tools for their genetic manipulation. Here we show that microRNA-9-regulated lentiviral vectors can be used for the targeted genetic modification of resident microglia in the rodent brain. Using transgenic reporter mice, we demonstrate that murine microglia lack microRNA-9 activity, whereas most other cells in the brain express microRNA-9. Injection of microRNA-9-regulated vectors into the adult rat brain induces transgene expression specifically in cells with morphological features typical of ramified microglia. The majority of transgene-expressing cells colabels with the microglia marker Iba1. We use this approach to visualize and isolate activated resident microglia without affecting circulating and infiltrating monocytes or macrophages in an excitotoxic lesion model in rat striatum. The microRNA-9-regulated vectors described here are a straightforward and powerful tool that facilitates functional studies of resident microglia.

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    2013-08-12 liuli5079
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    2013-10-06 liye789132251
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