1329-痤疮丙酸杆菌代谢物ILA修复特应性皮炎皮肤屏障 episode artwork

EPISODE · Jul 24, 2026 · 19 MIN

1329-痤疮丙酸杆菌代谢物ILA修复特应性皮炎皮肤屏障

from 聊聊Sci

这项研究揭示了皮肤共生菌痤疮丙酸杆菌(C. acnes)通过分泌吲哚乳酸(ILA)来维护皮肤屏障健康的重要机制。研究人员发现,特应性皮炎(AD)患者皮肤上的痤疮丙酸杆菌发生了基因组演变,导致其产生ILA的能力显著下降。实验证明,ILA能够激活角质形成细胞中的芳香烃受体(AhR),进而增强紧密连接蛋白的表达并抑制炎症因子IL-33。在小鼠模型和初步临床试验中,局部外用ILA成功修复了受损的表皮屏障并缓解了皮炎症状。这一发现为治疗特应性皮炎提供了一种基于微生物代谢物的新型靶向策略。研究强调了皮肤微生物组的代谢多样性在维持人体生理稳态中的关键作用。References:Zhang S, Li F, Xu X, et al. Commensal Cutibacterium acnes-derived indolelactic acid safeguards skin barrier function through the aryl hydrocarbon receptor[J]. Cell Reports Medicine, 2026.前往小宇宙评论区与主播互动

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1329-痤疮丙酸杆菌代谢物ILA修复特应性皮炎皮肤屏障

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