Targeting of the synthesized polypeptide in the cells is an important research field in modern cell biology. Cowpea trypsin inhibitor (cpti) gene has been modified and a fusion protein gene (sck) was produced by fusin...Targeting of the synthesized polypeptide in the cells is an important research field in modern cell biology. Cowpea trypsin inhibitor (cpti) gene has been modified and a fusion protein gene (sck) was produced by fusing a signal peptide sequence at cpti 5' end and an endoplasm reticulum (ER) retention signal peptide at cpti3' end respectively. The signal peptide can direct the newly synthesized polypeptide into ER, while ER retention signal can make the protein retained in the ER and its derivative protein body. ELISA test indicated that the accumulation level of foreign CpTI protein in sck transgenic tobacco (Nicotiana tabacum L.) was two times higher than cpti transgenic tobaccos and some individuals were four times higher. At the same time, sck transgenic tobacco has a high resistance to Lepidoptera pest due to the increased accumulation level of foreign CpTI protein. The strategy of foreign protein targeting can be used to increase the accumulation level of foreign protein in transgenic plants and can be widely applied to other related research field in plant genetic engineering.展开更多
2024年2月23日,学术期刊Nature Communications在线刊登了北京大学药学院天然药物及仿生药物全国重点实验室董甦伟研究员团队最新研究成果“A co-assembly platform engaging macrophage scavenger receptor A for lysosome-targeting p...2024年2月23日,学术期刊Nature Communications在线刊登了北京大学药学院天然药物及仿生药物全国重点实验室董甦伟研究员团队最新研究成果“A co-assembly platform engaging macrophage scavenger receptor A for lysosome-targeting protein degradation”(利用清道夫受体介导溶酶体靶向蛋白降解的共组装平台)。展开更多
靶向蛋白降解(targeted protein degradation,TPD)是一项具有前景的蛋白质稳态调控技术。在过去的二十年中,各种通过细胞内机制来降解具有挑战性的可溶性蛋白的技术得到了迅速发展,其中最具代表性的是基于泛素化-蛋白酶体系统的蛋白水...靶向蛋白降解(targeted protein degradation,TPD)是一项具有前景的蛋白质稳态调控技术。在过去的二十年中,各种通过细胞内机制来降解具有挑战性的可溶性蛋白的技术得到了迅速发展,其中最具代表性的是基于泛素化-蛋白酶体系统的蛋白水解靶向嵌合体(proteolysis-targeting chimera,PROTAC)技术。尽管以PROTAC为代表的TPD展现出广阔的治疗潜力,但这些TPD技术大多无法作用于在蛋白质组中同样重要的胞外蛋白及膜蛋白。随着近几年对蛋白降解途径的进一步拓展与应用,对于胞外蛋白及膜蛋白的干预技术不断涌现。本文作者将对目前已报道的膜蛋白及胞外蛋白靶向降解策略的作用机制和特点进行综述,并介绍几类新兴技术的研究进展、优势和不足,以期为膜蛋白稳态调控策略的进一步发展提供参考。展开更多
靶向蛋白降解(targeted protein degradation,TPD)技术可通过机体自身的蛋白清理系统(包括泛素蛋白酶体系统和溶酶体降解系统)去除致病靶蛋白,因而比传统的小分子抑制剂拥有更为广阔的应用领域。作为近年来制药行业内正快速发展的一个方...靶向蛋白降解(targeted protein degradation,TPD)技术可通过机体自身的蛋白清理系统(包括泛素蛋白酶体系统和溶酶体降解系统)去除致病靶蛋白,因而比传统的小分子抑制剂拥有更为广阔的应用领域。作为近年来制药行业内正快速发展的一个方向,TPD领域已开发出分子胶水、蛋白水解靶向嵌合体、溶酶体靶向嵌合体系统、自噬靶向嵌合体、自噬连接化合物等技术。目前全球已有30余种TPD药物进入临床试验阶段。该文聚焦于目前研究较为充分或进展较快的5种TPD创新技术,从基本概念、作用原理、技术特点、药物研发进展等角度综述了该领域的研究进展,以期为TPD药物的研发工作提供参考。展开更多
文摘Targeting of the synthesized polypeptide in the cells is an important research field in modern cell biology. Cowpea trypsin inhibitor (cpti) gene has been modified and a fusion protein gene (sck) was produced by fusing a signal peptide sequence at cpti 5' end and an endoplasm reticulum (ER) retention signal peptide at cpti3' end respectively. The signal peptide can direct the newly synthesized polypeptide into ER, while ER retention signal can make the protein retained in the ER and its derivative protein body. ELISA test indicated that the accumulation level of foreign CpTI protein in sck transgenic tobacco (Nicotiana tabacum L.) was two times higher than cpti transgenic tobaccos and some individuals were four times higher. At the same time, sck transgenic tobacco has a high resistance to Lepidoptera pest due to the increased accumulation level of foreign CpTI protein. The strategy of foreign protein targeting can be used to increase the accumulation level of foreign protein in transgenic plants and can be widely applied to other related research field in plant genetic engineering.
文摘2024年2月23日,学术期刊Nature Communications在线刊登了北京大学药学院天然药物及仿生药物全国重点实验室董甦伟研究员团队最新研究成果“A co-assembly platform engaging macrophage scavenger receptor A for lysosome-targeting protein degradation”(利用清道夫受体介导溶酶体靶向蛋白降解的共组装平台)。
文摘靶向蛋白降解(targeted protein degradation,TPD)是一项具有前景的蛋白质稳态调控技术。在过去的二十年中,各种通过细胞内机制来降解具有挑战性的可溶性蛋白的技术得到了迅速发展,其中最具代表性的是基于泛素化-蛋白酶体系统的蛋白水解靶向嵌合体(proteolysis-targeting chimera,PROTAC)技术。尽管以PROTAC为代表的TPD展现出广阔的治疗潜力,但这些TPD技术大多无法作用于在蛋白质组中同样重要的胞外蛋白及膜蛋白。随着近几年对蛋白降解途径的进一步拓展与应用,对于胞外蛋白及膜蛋白的干预技术不断涌现。本文作者将对目前已报道的膜蛋白及胞外蛋白靶向降解策略的作用机制和特点进行综述,并介绍几类新兴技术的研究进展、优势和不足,以期为膜蛋白稳态调控策略的进一步发展提供参考。
文摘靶向蛋白降解(targeted protein degradation,TPD)技术可通过机体自身的蛋白清理系统(包括泛素蛋白酶体系统和溶酶体降解系统)去除致病靶蛋白,因而比传统的小分子抑制剂拥有更为广阔的应用领域。作为近年来制药行业内正快速发展的一个方向,TPD领域已开发出分子胶水、蛋白水解靶向嵌合体、溶酶体靶向嵌合体系统、自噬靶向嵌合体、自噬连接化合物等技术。目前全球已有30余种TPD药物进入临床试验阶段。该文聚焦于目前研究较为充分或进展较快的5种TPD创新技术,从基本概念、作用原理、技术特点、药物研发进展等角度综述了该领域的研究进展,以期为TPD药物的研发工作提供参考。
