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Roxadustat attenuates experimental pulmonary fibrosis in vitro and in vivo
Toxicology Letters ( IF 2.9 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.toxlet.2020.06.009
Haidi Huang 1 , Xin Wang 1 , Xue Zhang 1 , Hongbo Wang 2 , Wanglin Jiang 1
Affiliation  

Roxadustat is the first orally administered, small-molecule hypoxia-inducible factor (HIF) prolyl hydroxylase inhibitor that has been submitted for FDA regulatory approval to treat anemia secondary to chronic kidney diseases. Its usage has also been suggested for pulmonary fibrosis; however, the corresponding therapeutic effects remain to be investigated. The in vitro effects of roxadustat on cobalt chloride (CoCl2)-stimulated pulmonary fibrosis with L929 mouse fibroblasts as well as on an in vivo pulmonary fibrosismice model induced with bleomycin (BLM; intraperitoneal injection, 50 mg/kg twice a week for 4 continuous weeks) were investigated. It found that the proliferation of L929 cells was inhibited and the production of collagen I, collagen III, prolyl hydroxylase domain protein 2 (PHD2), HIF-1α, α-smooth muscle actin (α-SMA), connective tissue growth factor (CTGF), transforming growth factor-β1 (TGF-β1) and p-Smad3 were reduced relative to that in the CoCl2 or BLM group after roxadustat treatment. Roxadustat ameliorated pulmonary fibrosis by reducing the pathology score and collagen deposition as well as decreasing the expression of collagen I, collagen III, PHD2, HIF-1α, α-SMA, CTGF, TGF-β1 and p-Smad3/Smad3. Our cumulative results demonstrate that roxadustat administration can attenuate experimental pulmonary fibrosis via the inhibition of TGF-β1/Smad activation.

中文翻译:

Roxadustat 在体外和体内减弱实验性肺纤维化

Roxadustat 是第一个口服的小分子低氧诱导因子 (HIF) 脯氨酰羟化酶抑制剂,已提交 FDA 监管部门批准,用于治疗继发于慢性肾病的贫血。也有人建议将其用于肺纤维化;然而,相应的治疗效果仍有待研究。罗沙司他对氯化钴 (CoCl2) 刺激的 L929 小鼠成纤维细胞肺纤维化以及博莱霉素 (BLM) 诱导的体内肺纤维化模型的体外作用;腹腔注射,50 mg/kg,每周两次,连续 4 周) 进行了调查。发现L929细胞的增殖受到抑制,产生胶原蛋白I、胶原蛋白III、脯氨酰羟化酶结构域蛋白2(PHD2)、HIF-1α、α-平滑肌肌动蛋白(α-SMA)、在罗沙司他治疗后,结缔组织生长因子 (CTGF)、转化生长因子-β1 (TGF-β1) 和 p-Smad3 相对于 CoCl2 或 BLM 组降低。Roxadustat 通过降低病理评分和胶原沉积以及降低胶原蛋白 I、胶原蛋白 III、PHD2、HIF-1α、α-SMA、CTGF、TGF-β1 和 p-Smad3/Smad3 的表达来改善肺纤维化。我们的累积结果表明,roxadustat 给药可以通过抑制 TGF-β1/Smad 活化来减轻实验性肺纤维化。III 型胶原蛋白、PHD2、HIF-1α、α-SMA、CTGF、TGF-β1 和 p-Smad3/Smad3。我们的累积结果表明,roxadustat 给药可以通过抑制 TGF-β1/Smad 活化来减轻实验性肺纤维化。III 型胶原蛋白、PHD2、HIF-1α、α-SMA、CTGF、TGF-β1 和 p-Smad3/Smad3。我们的累积结果表明,roxadustat 给药可以通过抑制 TGF-β1/Smad 活化来减轻实验性肺纤维化。
更新日期:2020-10-01
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