Systemic lupus erythematosus (SLE) is a chronic autoimmune disease with multi-system involvement, associated with an imbalance effect between effector and regulatory CD4+ T cells. The production of interleukin-2 (IL-2), a key cytokine that regulates the differentiation and activation of CD4+ T cell subsets, is impaired in SLE patients. Previous studies have shown IL-2 can expand Treg cell numbers and reduce Tfh and Th17 effector CD4+ T cell subsets in mice. Our previous study showed that the aberrant activation of Tfh cells was detected in activated SLE patients. Thus, we hypothesised that administration of low-dose IL-2 could represent a novel approach to the treatment of SLE by shifting the pathogenic effector CD4+ T cells dominant autoimmune condition to immune tolerance through restoring the balance in SLE patients. This project will reveal them through different aspects of molecules, cells, animals and patients. Our aim is to prove that IL-2 maybe a promising target in SLE treatment, which might create a novel therapy for SLE.
系统性红斑狼疮(SLE)是以调节性和效应性CD4+T细胞失衡为突出表现的多系统受累的自身免疫性疾病。白细胞介素-2(IL-2)是辅助T细胞的重要功能因子,一方面与调节性T细胞(Treg)上的IL-2受体结合,促进Treg产生并维持其功能,诱导免疫耐受;另一方面可能抑制效应性T细胞--滤泡辅助性T细胞(Tfh)和Th17细胞的分化,抑制生发中心形成,干扰自身反应性B细胞成熟,减少致病性自身抗体产生。SLE患者IL-2的产生和功能缺陷可能通过上述机制导致疾病发展。我们的前期实验证明外周血Tfh细胞与病情活动度正相关,同时临床上证实小样本SLE患者经低剂量IL-2治疗后疾病活动度减低,但对IL-2调节T细胞的机制尚不清楚。本课题将系统地从分子、细胞、动物和病人等层面逐步深入探讨IL-2的免疫调节机制,通过实验证明IL-2可能成为治疗SLE的新靶点,为该病的免疫治疗开辟新途径。
系统性红斑狼疮(SLE)是以调节性和效应性CD4+T细胞失衡为突出表现的多系统受累的自身免疫性疾病。白细胞介素-2(IL-2)是辅助T细胞的重要功能因子,一方面与调节性T细胞(Treg)上的IL-2受体结合,促进Treg产生并维持其功能,诱导免疫耐受;另一方面可能抑制效应性T细胞--滤泡辅助性T细胞(Tfh)和Th17细胞的分化,抑制生发中心形成,干扰自身反应性B细胞成熟,减少致病性自身抗体产生。我们的前期实验证明外周血Tfh细胞与病情活动度正相关,同时临床上证实小样本SLE患者经低剂量IL-2治疗后疾病活动度减低,但对IL-2调节T细胞的机制尚不清楚。在本课题的研究中,我们完成了系统性红斑狼疮的随机、双盲、安慰奖对照的临床试验,研究结果发表于Annals of The Rheumatic Diseases上。本课题将系统地从分子、细胞、动物和病人等层面逐步深入探讨IL-2的免疫调节机制,通过实验证明IL-2可能成为治疗SLE的新靶点,为该病的免疫治疗开辟新途径。
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数据更新时间:2023-05-31
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