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Sustained amphiregulin expression in intermediate alveolar stem cells drives progressive fibrosis
Cell Stem Cell ( IF 19.8 ) Pub Date : 2024-08-02 , DOI: 10.1016/j.stem.2024.07.004
Rui Zhao 1 , Zheng Wang 2 , Guowu Wang 1 , Jing Geng 3 , Huijuan Wu 2 , Ximing Liu 2 , Ennan Bin 2 , Jianhua Sui 2 , Huaping Dai 3 , Nan Tang 4
Affiliation  

Idiopathic pulmonary fibrosis (IPF) is a progressive and fatal fibrotic disease. Recent studies have highlighted the persistence of an intermediate state of alveolar stem cells in IPF lungs. In this study, we discovered a close correlation between the distribution pattern of intermediate alveolar stem cells and the progression of fibrotic changes. We showed that amphiregulin (AREG) expression is significantly elevated in intermediate alveolar stem cells of mouse fibrotic lungs and IPF patients. High levels of serum AREG correlate significantly with profound deteriorations in lung function in IPF patients. We demonstrated that AREG in alveolar stem cells is both required and sufficient for activating EGFR in fibroblasts, thereby driving lung fibrosis. Moreover, pharmacological inhibition of AREG using a neutralizing antibody effectively blocked the initiation and progression of lung fibrosis in mice. Our study underscores the therapeutic potential of anti-AREG antibodies in attenuating IPF progression, offering a promising strategy for treating fibrotic diseases.

中文翻译:


中间肺泡干细胞中持续的双调蛋白表达驱动进行性纤维化



特发性肺纤维化(IPF)是一种进行性且致命的纤维化疾病。最近的研究强调了 IPF 肺部肺泡干细胞中间状态的持续存在。在这项研究中,我们发现中间肺泡干细胞的分布模式与纤维化变化的进展之间存在密切相关性。我们发现,小鼠纤维化肺和 IPF 患者的中间肺泡干细胞中双调蛋白 (AREG) 表达显着升高。高水平的血清 AREG 与 IPF 患者肺功能的严重恶化显着相关。我们证明,肺泡干细胞中的 AREG 对于激活成纤维细胞中的 EGFR 是必要且充分的,从而驱动肺纤维化。此外,使用中和抗体对 AREG 进行药理抑制可有效阻止小鼠肺纤维化的发生和进展。我们的研究强调了抗 AREG 抗体在减轻 IPF 进展方面的治疗潜力,为治疗纤维化疾病提供了一种有前景的策略。
更新日期:2024-08-02
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