背景:肌少症是一种衰老相关的退行性综合征,线粒体自噬和运动防治肌少症已被证明密切相关,但尚缺乏详细介绍其中具体的受体蛋白和信号通路在运动防治肌少症中作用的综述。目的:综述详细介绍线粒体自噬相关具体的受体蛋白和信号通路在运...背景:肌少症是一种衰老相关的退行性综合征,线粒体自噬和运动防治肌少症已被证明密切相关,但尚缺乏详细介绍其中具体的受体蛋白和信号通路在运动防治肌少症中作用的综述。目的:综述详细介绍线粒体自噬相关具体的受体蛋白和信号通路在运动防治肌少症中的作用。方法:在2023-02-01/04-01之间进行了文献检索,检索文献时限从各数据库建库至2023年4月,数据库包括Web of Science、PubMed、中国知网、万方和维普。涵盖了“肌少症,衰老,老年,线粒体,线粒体功能,蛋白,通路”等关键词,严格按照纳入和排除标准进行筛选,最终纳入文献76篇进行综述分析。结果与结论:①肌少症是随着年龄增长肌肉质量和功能下降的疾病,其发生机制涉及神经肌肉功能下降、慢性炎症、酸碱失衡和线粒体功能障碍等。②线粒体自噬是细胞清除受损线粒体的重要过程,其中相关受体蛋白以及信号通路参与线粒体自噬的调控,运动可以通过调节这些受体蛋白和信号通路的活性,促进线粒体自噬的发生,对防治肌少症具有重要作用。③运动通过调控多个通路来促进线粒体自噬,包括上调AMPK、磷酸化ULK1、降低线粒体能量、增加与AMBRA1相关蛋白的表达、调控PINK1/Parkin通路等,从而改善肌少症引发的线粒体功能障碍;此外,运动还能激活mTOR通路促进肌肉生长和增加对葡萄糖的摄取,预防和治疗肌少症。④未来需要进一步深入研究运动防治肌少症中线粒体自噬相关受体蛋白和信号通路的具体作用机制和调控途径,开展更多的人体临床研究,以推动该领域的进一步发展。展开更多
Objective: Exercise, as a common non-drug intervention, is one of several lifestyle choices known to reduce the risk of cancer. Mitochondrial division has been reported to play a key role in the occurrence and transfo...Objective: Exercise, as a common non-drug intervention, is one of several lifestyle choices known to reduce the risk of cancer. Mitochondrial division has been reported to play a key role in the occurrence and transformation of hepatocellular carcinoma(HCC). This study investigated whether exercise could regulate the occurrence and development of HCC through mitosis.Methods: Bioinformatics technology was used to analyze the expression level of dynamin-related protein1(DRP1), a key protein of mitochondrial division. The effects of DRP1 and DRP1 inhibitor(mdivi-1) on the proliferation and migration of liver cancer cells BEL-7402 were observed using cell counting kit-8, plate colony formation, transwell cell migration, and scratch experiments. Enzyme-linked immunosorbent assay, Western blot and real-time polymerase chain reaction were used to detect the expression of DRP1 and its downstream phosphoinositide 3-kinase(PI3 K)/protein kinase B(AKT) pathway. A treadmill exercise intervention was tested in a nude mouse human liver cancer subcutaneous tumor model expressing different levels of DRP1. The size and weight of subcutaneous tumors in mice were detected before and after exercise.Results: The expression of DRP1 in liver cancer tissues was significantly upregulated compared with normal liver tissues(P<0.001). The proliferation rate and the migration of BEL-7402 cells in the DRP1 overexpression group were higher than that in the control group. The mdivi-1 group showed an inhibitory effect on the proliferation and migration of BEL-7402 cells at 50 lmol/L. Aerobic exercise was able to inhibit the expression of DRP1 and decrease the size and weight of subcutaneous tumors. Moreover,the expression of phosphorylated PI3 K(p-PI3 K) and phosphorylated AKT(p-AKT) decreased in the exercise group. However, exercise could not change p-PI3 K and p-AKT levels after knocking down DRP1 or using mdivi-1 on subcutaneous tumor.Conclusion: Aerobic exercise can suppress the development of tumors partially by regulating DRP1 through PI3 展开更多
文摘背景:肌少症是一种衰老相关的退行性综合征,线粒体自噬和运动防治肌少症已被证明密切相关,但尚缺乏详细介绍其中具体的受体蛋白和信号通路在运动防治肌少症中作用的综述。目的:综述详细介绍线粒体自噬相关具体的受体蛋白和信号通路在运动防治肌少症中的作用。方法:在2023-02-01/04-01之间进行了文献检索,检索文献时限从各数据库建库至2023年4月,数据库包括Web of Science、PubMed、中国知网、万方和维普。涵盖了“肌少症,衰老,老年,线粒体,线粒体功能,蛋白,通路”等关键词,严格按照纳入和排除标准进行筛选,最终纳入文献76篇进行综述分析。结果与结论:①肌少症是随着年龄增长肌肉质量和功能下降的疾病,其发生机制涉及神经肌肉功能下降、慢性炎症、酸碱失衡和线粒体功能障碍等。②线粒体自噬是细胞清除受损线粒体的重要过程,其中相关受体蛋白以及信号通路参与线粒体自噬的调控,运动可以通过调节这些受体蛋白和信号通路的活性,促进线粒体自噬的发生,对防治肌少症具有重要作用。③运动通过调控多个通路来促进线粒体自噬,包括上调AMPK、磷酸化ULK1、降低线粒体能量、增加与AMBRA1相关蛋白的表达、调控PINK1/Parkin通路等,从而改善肌少症引发的线粒体功能障碍;此外,运动还能激活mTOR通路促进肌肉生长和增加对葡萄糖的摄取,预防和治疗肌少症。④未来需要进一步深入研究运动防治肌少症中线粒体自噬相关受体蛋白和信号通路的具体作用机制和调控途径,开展更多的人体临床研究,以推动该领域的进一步发展。
基金supported by National Natural Science Foundation of China (No. 81503632)Youth Startup Fund of the First Affiliated Hospital of Naval Medical University (No. 2019QNB05)。
文摘Objective: Exercise, as a common non-drug intervention, is one of several lifestyle choices known to reduce the risk of cancer. Mitochondrial division has been reported to play a key role in the occurrence and transformation of hepatocellular carcinoma(HCC). This study investigated whether exercise could regulate the occurrence and development of HCC through mitosis.Methods: Bioinformatics technology was used to analyze the expression level of dynamin-related protein1(DRP1), a key protein of mitochondrial division. The effects of DRP1 and DRP1 inhibitor(mdivi-1) on the proliferation and migration of liver cancer cells BEL-7402 were observed using cell counting kit-8, plate colony formation, transwell cell migration, and scratch experiments. Enzyme-linked immunosorbent assay, Western blot and real-time polymerase chain reaction were used to detect the expression of DRP1 and its downstream phosphoinositide 3-kinase(PI3 K)/protein kinase B(AKT) pathway. A treadmill exercise intervention was tested in a nude mouse human liver cancer subcutaneous tumor model expressing different levels of DRP1. The size and weight of subcutaneous tumors in mice were detected before and after exercise.Results: The expression of DRP1 in liver cancer tissues was significantly upregulated compared with normal liver tissues(P<0.001). The proliferation rate and the migration of BEL-7402 cells in the DRP1 overexpression group were higher than that in the control group. The mdivi-1 group showed an inhibitory effect on the proliferation and migration of BEL-7402 cells at 50 lmol/L. Aerobic exercise was able to inhibit the expression of DRP1 and decrease the size and weight of subcutaneous tumors. Moreover,the expression of phosphorylated PI3 K(p-PI3 K) and phosphorylated AKT(p-AKT) decreased in the exercise group. However, exercise could not change p-PI3 K and p-AKT levels after knocking down DRP1 or using mdivi-1 on subcutaneous tumor.Conclusion: Aerobic exercise can suppress the development of tumors partially by regulating DRP1 through PI3
