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纤维细胞中BCL-2条件表达促进持久性肺纤维化,通过治疗性BCL-2抑制可逆
Elizabeth F Redente1,2, Tengyao Song1, Nomin Javkhlan1
1Program in Cell Biology, Department of Pediatrics, National Jewish Health, Denver, CO, USA.
Nature communications
|March 1, 2026
概括
持续的BCL-2表达在肺纤维细胞中阻止了细胞亡,导致异常性肺纤维化 (IPF) 中的持续性纤维化. 使用ABT-199抑制BCL-2可消除纤维化并促进肺部再生.
科学领域:
- 肺部医学 肺部医学
- 细胞生物学 细胞生物学
- 纤维化研究 纤维化研究
背景情况:
- 异形性肺纤维化 (IPF) 是一种致命的肺病,其特征是慢性上皮损伤和纤维细胞积累.
- 与正常修复不同,IPF肺部表现出耐亡的亲纤维细胞体,产生细胞外基质.
- 这种持久的纤维细胞群体有助于逐渐的肺重塑和疾病严重程度.
研究的目的:
- 研究BCL-2在纤维细胞亡中的作用及其对IPF病变发生的贡献.
- 探索BCL-2抑制在解决肺纤维化中的治疗潜力.
主要方法:
- 条件BCL-2表达在PDGFRα+纤维细胞中,以防止小鼠模型中的亡.
- 对人类IPF肺部进行空间转录组分析,以识别衰老的肌纤维细胞.
- 用选择性BCL-2抑制剂ABT-199.9治疗纤维化小鼠.
主要成果:
- 通过BCL-2表达来预防纤维细胞亡导致了持续的衰老,亲纤维细胞纤维细胞和病理性肺改造.
- 在人类IPF肺部的纤维化区域中发现了衰老的,表达BCL-2的肌纤维细胞.
- 在小鼠中,ABT-199治疗恢复了纤维细胞亡,减少了衰老,并促进了纤维化解和肺再生.
结论:
- 纤维细胞中持续的BCL-2表达阻碍了恒常性肺修复,并导致持续性肺纤维化.
- 用像ABT-199这样的抑制剂向BCL-2代表了扭转IPF纤维化的有希望的治疗策略.
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