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Sci Transl Med:Caveolin-1改良肽治疗肺纤维化

2019-12-13 QQY MedSci原创

特发性肺纤维化(IPF)是一种致命性的纤维化肺病,5年存活率(中位值)仅20%左右。目前,美国食品和药物管理局批准的药物疗法延缓了IPF的进展,这为开发更有效的治疗方法带来了希望。II型肺泡上皮祖细胞(AEC)的凋亡和增殖,以及活化的肌成纤维细胞或肺成纤维细胞(fLfs)的积累均可促进IPF的进展。全长的空泡蛋白-1支架结构域肽(CSP)可抑制AEC凋亡和fLf激活扩增,病可延缓博来霉素(BLM)

特发性肺纤维化(IPF)是一种致命性的纤维化肺病,5年存活率(中位值)仅20%左右。目前,美国食品和药物管理局批准的药物疗法延缓了IPF的进展,这为开发更有效的治疗方法带来了希望。

II型肺泡上皮祖细胞(AEC)的凋亡和增殖,以及活化的肌成纤维细胞或肺成纤维细胞(fLfs)的积累均可促进IPF的进展。全长的空泡蛋白-1支架结构域肽(CSP)可抑制AEC凋亡和fLf激活扩增,病可延缓博来霉素(BLM)诱导的小鼠肺损伤的PF进展。

像全长的CSP一样,敲除CSP片段的7个氨基酸,CSP7(FTTFTVT),具有抗小鼠模型肺纤维化的效果。在三个预临床模型(单剂量BLM、重复剂量BLM和腺病毒持续表达激活的转录因子β1[Ad-TGF-β1]诱导建立的PF)的纤维化阶段予以CSP7,可减少PF细胞外基质(ECM)的特征性标志物,增加AEC的存活,改善肺功能。CSP7既可用于全身(腹腔内),也可用于雾化或干粉肺直接给药。

此外,用CSP7处理终末期人IPF肺组织外植体可减少ECM的产生,提高AEC的存活率。检测致突变性的埃姆斯试验、体内人外周血淋巴细胞和小鼠体内微核变换分析均提示CSP7无致癌性。

总而言之,本研究结果支持进一步对CSP7作为IPF或其他间质性肺疾病患者的抗纤维化疗法进行研究。

原始出处:

Amarnath Satheesh Marudamuthu,et al. Caveolin-1–derived peptide limits development of pulmonary fibrosis.Science Translational Medicine  11 Dec 2019:Vol. 11, Issue 522, eaat2848.DOI: 10.1126/scitranslmed.aat2848

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