Sulforaphane调节NRF2介导的抗氧化活性,并下调TGF-β1/SMAD途径以防止辐射诱导的肌肉纤维化。
摘要来源:摘要来源:
生命科学。 2022年12月15日; 311(pt b):121197。 EPUB 2022 11月16日。PMID: 36400201“> 36400201 Zhuangzhuang Zheng,Jing Su,Chenbin Bian,Ying Xin,Xin Jiang
文章隶属关系:Huanhuan Wang
摘要:
sul aims: radiation-induced muscle fibrosis (RIMF) and the potential role in nuclear factor erythroid 2-related factor 2 (Nrf2)-mediated antioxidant stress.
MAIN METHODS: The RIMF model was established by a single irradiation of the left thigh of C57BL/6 J mice, and老鼠然后将随机分为对照,SFN,辐照(IR)和IR+SFN(IR/SFN)组。 The serum and skeletal muscle were collected eight weeks after irradiation, and changes in oxidative stress and muscle fibrosis were detected.
KEY FINDINGS: The IR group showed a more obvious skeletal muscle fiber atrophy, significantly higher number of collagen fibers, and higher inflammatory cell infiltration compared to control 团体。与IR组相比,IR/SFN组具有有序排列的肌肉纤维,胶原蛋白纤维降低和炎性细胞的浸润。此外,与对照组相比,氧化应激相关指数的表达显着增加,伴随着激活IR组骨骼肌中转化生长因子(TGF-β)/SMAD途径及其下游纤维化分子。 SFN干预后,上述指数得到了显着恢复。毛皮SFN热力体诱导了NRF2的上调,AKT的激活以及GSK-3β和FYN积累的抑制。
显着性: 这些结果表明,NRF2在保护RIMF中的中心作用表明。此外,SFN通过通过AKT/GSK-3β/FYN途径激活NRF2来防止RIMF。