News Release

抹掉T细胞的记忆或能逆转白癜风症状

Peer-Reviewed Publication

American Association for the Advancement of Science (AAAS)

Erasing the Memory of T Cells Could Reverse Vitiligo Symptoms (1 of 1)

image: Injection of an antibody treatment durably reversed depigmentation in mice with vitiligo, as evidenced by the darkening of the tail (right), compared to control mice with vitiligo (left). This material relates to a paper that appeared in the 18 July, issue of Science Translational Medicine, published by AAAS. The paper, by J.M. Richmond at University of Massachusetts Medical School in Worcester, MA; and colleagues was titled, "Antibody blockade of IL-15 signaling has the potential to durably reverse vitiligo." view more 

Credit: J.M. Richmond <i>et al., Science Translational Medicine </i>(2018)

研究人员发现,将一类T细胞的活性作为标靶可在小鼠的白癜风模型中恢复皮肤的色素沉着。他们的发现或能为实现比目前治疗方法结果更为持久的新型白癜风治疗奠定基础。白癜风是一种自身免疫性疾病,它由T细胞攻击并破坏产生黑色素的皮肤细胞所致,其结果是皮肤色素丧失及出现白色斑点。大约有1%的全球人口(即7500万人左右)罹患这种疾病,它能令患者感到苦恼和焦虑。科学家们已经研发的白癜风治疗可暂时性地令患者皮肤斑块恢复色素沉着,但在治疗结束的第一年内,多达40%的病例会重新出现色素丧失。研究人员推测,这一复发可能是由一类名叫驻留记忆T细胞(TRMs)作祟所致。然而,将这些发现转化为疗效更为持久的白癜风治疗被证明颇为困难。在这一研究中,Jillian Richmond和同事对白癜风患者的皮肤病灶进行了分析;他们发现,这些病灶中含有表达白细胞介素-15(IL-15)受体某些成分的TRMs;IL-15是一种免疫信号分子;白癜风模型小鼠体内的TRMs也显示出相同的IL-15受体。于是,他们给确定患有白癜风的小鼠为期2周的针对IL-15受体的抗体;结果发现,在接着的2个月中,该治疗恢复了小鼠皮肤的色素沉着。作者计划在最近的将来开展临床试验以确认,以TRMs作为标靶是否代表了一种对白癜风患者可行的治疗方法。

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