Rony I K, Baten A, Bloomfield J A, Islam M E, Billah M M, Islam K D
Biotechnology and Genetic Engineering Discipline, Life Science School, Khulna University, Khulna, 9208, Bangladesh.
Cell Prolif. 2015 Apr;48(2):140-56. doi: 10.1111/cpr.12162. Epub 2015 Jan 29.
Induced pluripotent stem cells (iPSCs) are considered patient-specific counterparts of embryonic stem cells as they originate from somatic cells after forced expression of pluripotency reprogramming factors Oct4, Sox2, Klf4 and c-Myc. iPSCs offer unprecedented opportunity for personalized cell therapies in regenerative medicine. In recent years, iPSC technology has undergone substantial improvement to overcome slow and inefficient reprogramming protocols, and to ensure clinical-grade iPSCs and their functional derivatives. Recent developments in iPSC technology include better reprogramming methods employing novel delivery systems such as non-integrating viral and non-viral vectors, and characterization of alternative reprogramming factors. Concurrently, small chemical molecules (inhibitors of specific signalling or epigenetic regulators) have become crucial to iPSC reprogramming; they have the ability to replace putative reprogramming factors and boost reprogramming processes. Moreover, common dietary supplements, such as vitamin C and antioxidants, when introduced into reprogramming media, have been found to improve genomic and epigenomic profiles of iPSCs. In this article, we review the most recent advances in the iPSC field and potent application of iPSCs, in terms of cell therapy and tissue engineering.
诱导多能干细胞(iPSC)被认为是胚胎干细胞的患者特异性对应物,因为它们源自体细胞,是在多能性重编程因子Oct4、Sox2、Klf4和c-Myc被强制表达之后产生的。iPSC为再生医学中的个性化细胞疗法提供了前所未有的机会。近年来,iPSC技术已经有了实质性的改进,以克服重编程方案缓慢且低效的问题,并确保临床级iPSC及其功能性衍生物的质量。iPSC技术的最新进展包括采用新型递送系统(如非整合病毒和非病毒载体)的更好的重编程方法,以及对替代重编程因子的表征。同时,小分子(特定信号或表观遗传调节剂的抑制剂)对iPSC重编程变得至关重要;它们有能力替代假定的重编程因子并促进重编程过程。此外,人们发现,常见的膳食补充剂,如维生素C和抗氧化剂,当被引入重编程培养基时,可改善iPSC的基因组和表观基因组特征。在本文中,我们从细胞治疗和组织工程的角度,综述了iPSC领域的最新进展以及iPSC的潜在应用。