Neural Regen Res: 未折叠蛋白反应“爆发”可加速轴突再生
来自智利大学生物医学科学研究所Hetz 教授最近研究了未折叠蛋白反应对外周神经再生的影响。Hetz 教授使用基因操作技术,研究靶向ATF4和Xbp1对坐骨神经损伤沃勒变性的影响。研究表明,ATF4缺如并没有改变沃勒变性,再生及功能恢复。但Xbp1基因删除导致髓鞘清除降低,轴突再生减缓及巨噬细胞浸润,与此同时,运动功能的恢复也较为缓慢。Hetz 教授验证了基因治疗提供XBP1s 成使用腺伴随病毒修复感觉轴突。周围神经损伤神经元的AAV - XBP1s显示在轴突再生过程的增强。
周围神经病变是指周围神经系统的损坏。与此相反,在中枢神经系统轴突损伤后限于髓鞘间隙和星形胶质细胞,其分泌产生用于轴突再生的不利环境生长抑制分子的活化。因此,成功的轴突修复取决于神经元的固有能力和神经胶质细胞,并且调节再生过程微环境因素的反应。
他们认为,内质网是一种参与该维持在细胞中的功能性蛋白质的质量控制过程的动态互连网络。对内质网有助于当地钙体内平衡,脂类合成,折叠和蛋白质的分泌。越来越多的证据表明,中枢神经系统和周围神经损伤导致的内质网proteostasis 从事神经元和胶质细胞应激反应。 内质网应激激活的自适应机制,以应付蛋白质折叠的改变,被称为未折叠蛋白反应。
总之,这些结果证明了IRE1α / XBP1信号的未折叠蛋白反应的分支周围神经系统损伤的不同贡献。此观点文章发表在《中国神经再生研究(英文版)》2016年6期杂志上。
Article: "Bursting the unfolded protein response accelerates axonal regeneration" by Maritza
Oñate1,2,3,4,5, Felipe A. Court1,2,4, Claudio Hetz1,3,4,6,7 (1Geroscience Center for Brain Health and Metabolism, Santiago, Chile; 2Center for Integrative Biology, Universidad Mayor, Santiago, Chile;
3Biomedical Neuroscience Institute, Faculty of Medicine, University of Chile, Santiago, Chile; 4Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Center for Molecular Studies of the Cell, University of Chile, Santiago, Chile; 5Millenium Nucleus for Regenerative Biology, Santiago, Chile ; 6Buck Institute for Research on Aging, Novato, CA, 94945, USA; 7Department of Immunology and Infectious Diseases, Harvard School of Public Health, Boston, MA, USA)
Oñate M, Court FA, Hetz C (2016) Bursting the unfolded protein response accelerates axonal regeneration. Neural Regen Res 11(6):892-893.
欲获更多资讯:请与《中国神经再生研究(英文版)》杂志国际发展部联络;联络电话:+[1**********]73,或用电子邮件联络:[email protected]。 文章全文请见:http://www.nrronline.org/
基金:弗里克基金会;肌萎缩性脊髓侧索硬化症治疗联盟;肌肉萎缩症协会382453;迈克尔·J ·福克斯基金会帕金森研究;科技基金;海军研究办公室
中文摘要
未折叠蛋白反应对外周神经再生的影响。Hetz 教授使用基因操作技术,研究靶向ATF4和Xbp1对坐骨神经损伤沃勒变性的影响。研究表明,ATF4缺如并没有改变沃勒变性,再生及功能恢复。但Xbp1基因删除导致髓鞘清除降低,轴突再生减缓及巨噬细胞浸润,与此同时,运动功能的恢复也较为缓慢。Hetz 教授验证了基因治疗提供XBP1s 成使用腺伴随病毒修复感觉轴突。周围神经损伤神经元的AAV - XBP1s显示在轴突再生过程的增强。
英文摘要
Peripheral neuropathies are triggered by a large spectrum of conditions, representing a serious public health problem. Only in the United States it is estimated that 20 million people are affected with peripheral neuropathies. Based on the studies discussed here, the next step in the field is to determine if the UPR has therapeutic potentials in other conditions involving peripheral nerve damage including autoimmune diseases, small vessel disease, cancer, kidney disorders, neuromas, viral infections, and diabetes mellitus, or the exposure to environmental toxins and cytotoxic medicines such as chemotherapy. Overall, modulation of axonal regeneration programs by the UPR incorporates novel players in the process of nerve repair after mechanical damage. Since several small molecules and gene therapy strategies are available to target the UPR, manipulation of the ER proteostasis network might emerge as a new avenue to develop interventions that improve axonal regeneration in different degenerative conditions of the nervous system.
Neural Regen Res: 未折叠蛋白反应“爆发”可加速轴突再生
来自智利大学生物医学科学研究所Hetz 教授最近研究了未折叠蛋白反应对外周神经再生的影响。Hetz 教授使用基因操作技术,研究靶向ATF4和Xbp1对坐骨神经损伤沃勒变性的影响。研究表明,ATF4缺如并没有改变沃勒变性,再生及功能恢复。但Xbp1基因删除导致髓鞘清除降低,轴突再生减缓及巨噬细胞浸润,与此同时,运动功能的恢复也较为缓慢。Hetz 教授验证了基因治疗提供XBP1s 成使用腺伴随病毒修复感觉轴突。周围神经损伤神经元的AAV - XBP1s显示在轴突再生过程的增强。
周围神经病变是指周围神经系统的损坏。与此相反,在中枢神经系统轴突损伤后限于髓鞘间隙和星形胶质细胞,其分泌产生用于轴突再生的不利环境生长抑制分子的活化。因此,成功的轴突修复取决于神经元的固有能力和神经胶质细胞,并且调节再生过程微环境因素的反应。
他们认为,内质网是一种参与该维持在细胞中的功能性蛋白质的质量控制过程的动态互连网络。对内质网有助于当地钙体内平衡,脂类合成,折叠和蛋白质的分泌。越来越多的证据表明,中枢神经系统和周围神经损伤导致的内质网proteostasis 从事神经元和胶质细胞应激反应。 内质网应激激活的自适应机制,以应付蛋白质折叠的改变,被称为未折叠蛋白反应。
总之,这些结果证明了IRE1α / XBP1信号的未折叠蛋白反应的分支周围神经系统损伤的不同贡献。此观点文章发表在《中国神经再生研究(英文版)》2016年6期杂志上。
Article: "Bursting the unfolded protein response accelerates axonal regeneration" by Maritza
Oñate1,2,3,4,5, Felipe A. Court1,2,4, Claudio Hetz1,3,4,6,7 (1Geroscience Center for Brain Health and Metabolism, Santiago, Chile; 2Center for Integrative Biology, Universidad Mayor, Santiago, Chile;
3Biomedical Neuroscience Institute, Faculty of Medicine, University of Chile, Santiago, Chile; 4Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Center for Molecular Studies of the Cell, University of Chile, Santiago, Chile; 5Millenium Nucleus for Regenerative Biology, Santiago, Chile ; 6Buck Institute for Research on Aging, Novato, CA, 94945, USA; 7Department of Immunology and Infectious Diseases, Harvard School of Public Health, Boston, MA, USA)
Oñate M, Court FA, Hetz C (2016) Bursting the unfolded protein response accelerates axonal regeneration. Neural Regen Res 11(6):892-893.
欲获更多资讯:请与《中国神经再生研究(英文版)》杂志国际发展部联络;联络电话:+[1**********]73,或用电子邮件联络:[email protected]。 文章全文请见:http://www.nrronline.org/
基金:弗里克基金会;肌萎缩性脊髓侧索硬化症治疗联盟;肌肉萎缩症协会382453;迈克尔·J ·福克斯基金会帕金森研究;科技基金;海军研究办公室
中文摘要
未折叠蛋白反应对外周神经再生的影响。Hetz 教授使用基因操作技术,研究靶向ATF4和Xbp1对坐骨神经损伤沃勒变性的影响。研究表明,ATF4缺如并没有改变沃勒变性,再生及功能恢复。但Xbp1基因删除导致髓鞘清除降低,轴突再生减缓及巨噬细胞浸润,与此同时,运动功能的恢复也较为缓慢。Hetz 教授验证了基因治疗提供XBP1s 成使用腺伴随病毒修复感觉轴突。周围神经损伤神经元的AAV - XBP1s显示在轴突再生过程的增强。
英文摘要
Peripheral neuropathies are triggered by a large spectrum of conditions, representing a serious public health problem. Only in the United States it is estimated that 20 million people are affected with peripheral neuropathies. Based on the studies discussed here, the next step in the field is to determine if the UPR has therapeutic potentials in other conditions involving peripheral nerve damage including autoimmune diseases, small vessel disease, cancer, kidney disorders, neuromas, viral infections, and diabetes mellitus, or the exposure to environmental toxins and cytotoxic medicines such as chemotherapy. Overall, modulation of axonal regeneration programs by the UPR incorporates novel players in the process of nerve repair after mechanical damage. Since several small molecules and gene therapy strategies are available to target the UPR, manipulation of the ER proteostasis network might emerge as a new avenue to develop interventions that improve axonal regeneration in different degenerative conditions of the nervous system.