1318-膀胱神经上皮重塑与PIEZO1介导的慢性痛通路 episode artwork

EPISODE · Jul 22, 2026 · 15 MIN

1318-膀胱神经上皮重塑与PIEZO1介导的慢性痛通路

from 聊聊Sci

这项研究揭示了反复尿路感染通过IL-6-PIEZO1-SLC7A11-谷氨酸轴诱发慢性膀胱疼痛和排尿功能障碍的分子机制。研究发现,感染引起的炎症因子IL-6会上调膀胱上皮细胞中的机械敏感通道PIEZO1,导致细胞对压力过度敏感并产生大量活性氧。为了应对这种应激,细胞通过SLC7A11转运蛋白启动抗氧化反应,但这一过程却意外地导致细胞向胞外大量释放谷氨酸。蓄积的谷氨酸随后诱导痛觉C纤维在膀胱黏膜内异常增生与轴突伸展,造成神经重塑和高度敏感。通过药理学手段抑制SLC7A11可以有效缓解神经性疼痛和排尿异常,为治疗慢性膀胱疼痛综合征提供了新的靶点。这一成果重新定义了膀胱上皮在炎症性疼痛中作为主动信号转导者的关键角色。References:Kim M J, Noh J H, Lee H Y, et al. Excessive epithelial mechanosensation drives nociceptive innervation and chronic bladder pain via the PIEZO1-SLC7A11-glutamate axis[J]. Cell, 2026.前往小宇宙评论区与主播互动

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1318-膀胱神经上皮重塑与PIEZO1介导的慢性痛通路

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