Immunity:研究破译白癜风和牛皮癣的免疫机制

2017-02-22 MEI 生物360

在数以千计的皮肤活检和超过一百公斤的皮肤的帮助下,瑞典卡罗林斯卡医学院的研究人员观察了两个免疫细胞的亚群在健康皮肤中的行为。 这种功能性二分法保留在炎症性疾病牛皮癣和白癜风中。 这项研究,近日发表在《Immunity》杂志,打开了更多针对局部治疗贴片炎症性皮肤疾病的方法。不同种类的免疫细胞保护健康皮肤免受微生物的攻击,包括 T 细胞。 苍白的炎症性皮肤病使皮肤的局部免疫系统失去平衡。 在患有白癜风


在数以千计的皮肤活检和超过一百公斤的皮肤的帮助下,瑞典卡罗林斯卡医学院的研究人员观察了两个免疫细胞的亚群在健康皮肤中的行为。 这种功能性二分法保留在炎症性疾病牛皮癣和白癜风中。 这项研究,近日发表在《Immunity》杂志,打开了更多针对局部治疗贴片炎症性皮肤疾病的方法。

不同种类的免疫细胞保护健康皮肤免受微生物的攻击,包括 T 细胞。 苍白的炎症性皮肤病使皮肤的局部免疫系统失去平衡。 在患有白癜风的人中,其导致色素沉着的斑块性损失,在皮肤的受影响区域中某种 T 细胞占优势; 另一方面,牛皮癣患者表现出另一种 T 细胞的增加。

在本研究中,由 Yenan Bryceson 和 Liv Eidsmo 领导的两个研究小组展示了这两个 T 细胞亚群如何保护健康皮肤免受外部攻击,并保持其在牛皮癣和白癜风中的独特功能。

博士生 Stanley Cheuk 及其同事每次实验使用多达 1,500 个皮肤活检,总共有几百公斤的健康皮肤用于研究的关键部分。

“通过将来自健康皮肤的免疫细胞亚群的遗传分析与功能实验相结合,我们能够定义记忆免疫细胞的两个亚群,并且详细解释 / 解剖这些细胞在健康和发炎皮肤中的行为”, 卡罗林斯卡医学院的研究员 Liv Eidsmo 说。

白癜风的特征是称为 CD49a + 的 T 细胞亚群的积累,其识别并准备好杀死色素细胞。 在牛皮癣中,另一种 T 细胞,CD49a 在皮肤中累积并产生引起炎症的蛋白质 IL-17。 在健康的皮肤中,CD49a + 和 CD49a 细胞是休眠的,但是当由皮肤细胞分泌的蛋白质 IL-15 刺激时,其迅速响应炎症和细胞毒性作用,作为对微生物攻击的快速反应防御。

Eidsmo 博士说:“如果我们能够破译导致这些斑块性皮肤病变所涉及的一个亚群的累积的局部免疫学变化,我们将开始更有针对性的治疗。”

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    2017-11-15 暂20a6e63m

    帅气

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    2017-09-02 Discovery

    好文

    0

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    2017-03-10 虈亣靌

    学习了谢谢分享

    0

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