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受蜘蛛网启发研发植入式“纳米多孔线”可治疗糖尿病

2018-01-03 佚名 cnBeta

受到蜘蛛网的启发,一团队创建了一种易于植入的纳米多孔线,可以容纳数十万个产生胰岛素的胰岛细胞,并且在需要时可以轻松移除。

据外媒报道,一个研究小组开发了一种革命性的治疗1型糖尿病的新方法。受到蜘蛛网的启发,该团队创建了一种易于植入的纳米多孔线,可以容纳数十万个产生胰岛素的胰岛细胞,并且在需要时可以轻松移除。



1型糖尿病的特点是免疫系统破坏胰腺中产生胰岛素的细胞。几年来,研究人员一直在努力寻找一种有效的方法来将新的,功能正常的产生胰岛素的胰岛细胞移植到体内,但免疫系统排斥反应一直是主要的障碍,导致患者需要极端的免疫抑制药物。

克服排斥移植体的方法是将胰岛细胞包裹在涂层中,以保护它们免受机体的免疫应答。当然,这种方法出现的新问题是,这些被封装的细胞全部彼此断开,几乎不可能有效地从身体上移除。细胞具有有限的寿命或具有潜在的癌症副作用时会成为主要问题。

这种新方法从一个纳米多孔聚合物线开始,然后用含有产生胰岛素的胰岛细胞的藻酸盐水凝胶覆盖。水凝胶涂层保护胰岛细胞免受任何免疫系统攻击,并且聚合物线允许通过简单的腹腔镜手术过程容易地植入或移除。

研究小组将这种设备称为TRAFFIC(用于胰岛封装的螺纹增强海藻酸纤维),他们已成功地在小鼠身上进行测试,在植入后的两天内有效地将小鼠的血糖水平降低到正常水平。10英寸的样品还在狗狗身上进行测试,在植入后一个月证明易于腹腔镜移除。

参与这个项目的James Flanders解释说:“还有其他类似的设备,但这个似乎希望更大。它产生的反应极小,能保护胰岛细胞,使它们感应到葡萄糖,它们不会附着在任何物体上,而且可以轻松去除。对我来说,这听起来像是双赢选择。”

如果进一步的研究显示这种方法在人体实验中是有效的,则可以将其应用于多种其他激素缺陷性疾病和内分泌紊乱。

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    2018-06-14 villahu
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    2018-01-05 lqvr
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    2018-01-05 jiyangfei
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    2018-01-03 smartxiuxiu

    期待

    0

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    2018-01-03 1e0f8808m18(暂无匿称)

    创新治疗方法.学习了.

    0

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