J Invest Dermatol:抑制糖代谢可缓解获得性大疱性类天疱疮样表皮松解症

2021-02-22 MedSci原创 MedSci原创

免疫细胞的分化和功能受细胞代谢的影响,反之亦然

研究证据表明,免疫细胞的分化和功能受细胞代谢的影响,反之亦然,这是免疫反应的先决条件。例如,TH1细胞和M1巨噬细胞即使在有氧条件下也要依赖于糖酵解,而M2巨噬细胞、调节T细胞(Treg)和静止记忆T细胞则主要依赖于氧化磷酸化(OxPhos)。

获得性大疱性类天疱疮样表皮松解症(EBA)是一种自身抗体驱动、粒细胞介导的皮肤病。细胞代谢及其作为治疗靶点在EBA中的作用尚不清楚。

Paul等研究了2-脱氧葡萄糖和二甲双胍在EBA抗体转移模型中的作用。

二甲双胍和2-脱氧葡萄糖可减轻BP样EBA

二甲双胍和2-脱氧葡萄糖均可减轻BP样EBA抗体转移模型的严重程度。随后,Paul等证明免疫复合物(IC)刺激中性粒细胞增加了有氧糖酵解的速率,这种增加是诱导对EBA至关重要的白三烯B4和活性氧释放所必需的。2-脱氧葡萄糖作为糖酵解酶己糖激酶和磷酸葡萄糖异构酶的抑制剂,以及庚二酸(甘油醛-3-磷酸脱氢酶的抑制剂)均可减弱中性粒细胞的这种反应。

IC触发的中性粒细胞反应需要有氧糖酵解和OxPhos的参与

降低OxPhos,二甲双胍也能抑制这种中性粒细胞反应,但只有超剂量应用时,二甲双胍才有此效应,这使得二甲双胍不太可能对体内的中性粒细胞产生直接作用。与此一致的是,OxPhos抑制剂寡霉素同样可抑制这些中性粒细胞反应,但IC刺激并不改变OxPhos的速率,这些结果表明,完整的线粒体是中性粒细胞反应所必需的。

总而言之,该研究结果强调了中性粒细胞的糖酵解和OxPhos是治疗EBA的潜在靶点,2-脱氧葡萄糖和二甲双胍是潜在的药物。

原始出处:

Schilf Paul,Schmitz Marie,Derenda-Hell Aleksandra et al. Inhibition of glucose metabolism abrogates the effector phase of bullous pemphigoid-like epidermolysis bullosa acquisita. J Invest Dermatol, 2021, 10.1016/j.jid.2021.01.014

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    2021-02-24 zz70
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    2021-02-22 jyzxjiangqin

    好文章!

    0

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    2021-02-22 易水河

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