Two distinctive rearranged 19-nor-7,8-seco-labdane diterpenoids(1 and 2)with a novel tetracyclo[5.2.1.0^(2,5.)0^(4,10)]decane skeleton,a derivative of the open tetrahydrofuran ring(7),three dimeric compounds(8-10),and...Two distinctive rearranged 19-nor-7,8-seco-labdane diterpenoids(1 and 2)with a novel tetracyclo[5.2.1.0^(2,5.)0^(4,10)]decane skeleton,a derivative of the open tetrahydrofuran ring(7),three dimeric compounds(8-10),and four revised homologs(3-6)were obtained from Chinese liverwort Pallavicinia ambigua.Their structures were identified via combined analysis of their spectroscopic data,single-crystal X-ray diffraction patterns,and ECD calculations.The light-driven conversion of compound 5 to compounds 1-4 demonstrated that photochemically induced postmodification involved in biosynthesis is an important way to diversify natural structures.A preliminary cytotoxicity assay revealed that compound 5 showed significant inhibition in the human prostate cancer(PC-3)cell line via an apoptotic pathway.展开更多
背景:沸石基咪唑盐框架8及其衍生物凭借优异的药物控释能力在组织工程领域展现出广泛的应用潜力。目的:综述沸石基咪唑盐框架8及其改性材料在活性氧生成与清除中的作用机制,探讨它们在抗肿瘤、抗菌及组织保护领域的应用潜力,分析未来发...背景:沸石基咪唑盐框架8及其衍生物凭借优异的药物控释能力在组织工程领域展现出广泛的应用潜力。目的:综述沸石基咪唑盐框架8及其改性材料在活性氧生成与清除中的作用机制,探讨它们在抗肿瘤、抗菌及组织保护领域的应用潜力,分析未来发展方向与挑战。方法:由第一作者通过中国知网、PubMed等数据库检索2000-2024年相关文献,中文检索关键词为“沸石基咪唑盐框架8,活性氧,抗菌,抗肿瘤,活性氧吸收,活性氧平衡,组织修复”,英文检索关键词为“ZIF-8,ROS,antibacterial,antitumor,ROS absorption,Balance of ROS,Tissue regeneration”,最终筛选69篇高质量文献进行综述分析。结果与结论:通过调控沸石基咪唑盐框架8及其改性材料的带隙结构、优化电子转移效率可显著提升光生载流子的分离与迁移效率,从而增强催化反应性能,提高活性氧的产生效率,实现更高效、更具靶向性的抗肿瘤及抗菌作用;同时,采用抗氧化酶系统或表面改性技术构建的活性氧清除装置,能够精准平衡多余活性氧,实现对细胞的有效保护。这种基于带隙调控与电子转移优化的双向调控机制,为动态管理活性氧生成与清除提供了重要策略,在抗肿瘤、抗菌及组织保护等领域展现出广阔的应用前景。展开更多
基金national financial support from the National Key R&D Program of China(No.2019YFA0905700)the National Natural Science Foundation of China(Nos.82173703 and 81874293)the Major Basic Research Program of Shandong Provincial Natural Science Foundation(No.ZR2019ZD26)。
文摘Two distinctive rearranged 19-nor-7,8-seco-labdane diterpenoids(1 and 2)with a novel tetracyclo[5.2.1.0^(2,5.)0^(4,10)]decane skeleton,a derivative of the open tetrahydrofuran ring(7),three dimeric compounds(8-10),and four revised homologs(3-6)were obtained from Chinese liverwort Pallavicinia ambigua.Their structures were identified via combined analysis of their spectroscopic data,single-crystal X-ray diffraction patterns,and ECD calculations.The light-driven conversion of compound 5 to compounds 1-4 demonstrated that photochemically induced postmodification involved in biosynthesis is an important way to diversify natural structures.A preliminary cytotoxicity assay revealed that compound 5 showed significant inhibition in the human prostate cancer(PC-3)cell line via an apoptotic pathway.
文摘背景:沸石基咪唑盐框架8及其衍生物凭借优异的药物控释能力在组织工程领域展现出广泛的应用潜力。目的:综述沸石基咪唑盐框架8及其改性材料在活性氧生成与清除中的作用机制,探讨它们在抗肿瘤、抗菌及组织保护领域的应用潜力,分析未来发展方向与挑战。方法:由第一作者通过中国知网、PubMed等数据库检索2000-2024年相关文献,中文检索关键词为“沸石基咪唑盐框架8,活性氧,抗菌,抗肿瘤,活性氧吸收,活性氧平衡,组织修复”,英文检索关键词为“ZIF-8,ROS,antibacterial,antitumor,ROS absorption,Balance of ROS,Tissue regeneration”,最终筛选69篇高质量文献进行综述分析。结果与结论:通过调控沸石基咪唑盐框架8及其改性材料的带隙结构、优化电子转移效率可显著提升光生载流子的分离与迁移效率,从而增强催化反应性能,提高活性氧的产生效率,实现更高效、更具靶向性的抗肿瘤及抗菌作用;同时,采用抗氧化酶系统或表面改性技术构建的活性氧清除装置,能够精准平衡多余活性氧,实现对细胞的有效保护。这种基于带隙调控与电子转移优化的双向调控机制,为动态管理活性氧生成与清除提供了重要策略,在抗肿瘤、抗菌及组织保护等领域展现出广阔的应用前景。
