June 5, 2026 · The Journal of investigative dermatology · DOI: 10.1016/j.jid.2026.05.020

Extracellular Vesicle-Derived mir-148a-3p Promotes Plasmablast Differentiation in Bullous Pemphigoid via BACH2 Repression and mTOR Activation

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This study aims to elucidate the molecular mechanisms behind plasmablast differentiation in bullous pemphigoid (BP), an autoimmune blistering disease. The authors found that extracellular vesicle-derived miR-148a-3p enhances plasmablast differentiation by repressing BACH2 and activating the mTOR signaling pathway, suggesting a novel regulatory mechanism in BP pathogenesis and highlighting miR-148a-3p as a potential diagnostic and therapeutic target.

Jine Zhang, Jieyu Zhang, Shengxian Shen, Xia Li, Yaxing Bai, Bing Wang, Gang Wang, Hui Fang

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