The generation of induced pluripotent stem cells through somatic cell reprogramming requires a global reorganization of cellular functions.This reorganization occurs in a multi-phased manner and involves a gradual rev...The generation of induced pluripotent stem cells through somatic cell reprogramming requires a global reorganization of cellular functions.This reorganization occurs in a multi-phased manner and involves a gradual revision of both the epigenome and transcriptome.Recent studies have shown that the large-scale transcriptional changes observed during reprogramming also apply to long noncoding RNAs(lncR NAs),a type of traditionally neglected RNA species that are increasingly viewed as critical regulators of cellular function.Deeper understanding of lncR NAs in reprogramming may not only help to improve this process but also have implications for studying cell plasticity in other contexts,such as development,aging,and cancer.In this review,we summarize the current progress made in profiling and analyzing the role of lncR NAs in various phases of somatic cell reprogramming,with emphasis on the re-establishment of the pluripotency gene network and X chromosome reactivation.展开更多
The development of tech niq ues allowing the systematic capture of the RNA-bound proteome has yielded many surprises.Among these,metabolic enzymes have been frequently detected as RNA-binding proteins(RBPs)by differen...The development of tech niq ues allowing the systematic capture of the RNA-bound proteome has yielded many surprises.Among these,metabolic enzymes have been frequently detected as RNA-binding proteins(RBPs)by different profiling methodologies in various cell types(Hentze et al.,2018).Compared to previous-more simplistic-views,it is now known that cellular metabolism(not only limited to the tricarboxylic acid,TCA,cycle)is compartmentalized.In fact,metabolic enzymes translocate to the nucleus and are enriched at actively transcribed loci,where they sustain epigenetic/epitranscriptomic marks through localized metabolite production(Mews et al.,2017).It has been proposed that the in teraction with nascent RNAs facilitates the anchorage of metabolic enzymes at target loci(Bao et al.,2018),and it is plausible that mature RNAs work in the same way to assist metabolic reactions in the cytoplasm.展开更多
基金supported by the National Key R&D Program of China(Grant Nos.2016YFA0100701,2016YFA0100102,2018YFA0106903,and 2016YFA0100300)the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDA16030502)+8 种基金the Youth Innovation Promotion Association of the Chinese Academy of Sciences(Grant No.2015294)the National Natural Science Foundation of China(Grant Nos.31671537,31571524,and 31501192)the Natural Science Foundation of Guangdong Province(Grant No.2018B030306042)the Guangdong Province Science and Technology Program(Grant Nos.2014A030312001,2016A050503037,2016B030229007,and 2017B050506007)the Science and Technology Planning Project of Guangdong Province(Grant No.2017B030314056)the Pearl River Science and Technology Nova Program of Guangzhou(Grant No.201610010107)the Guangzhou Science and Technology Program(Grant No.201807010066),Chinasupported by a President’s International Fellowship Initiative program from the Chinese Academy of Sciencessupported by a Pearl River Overseas Young Talents Postdoctoral Fellowship
文摘The generation of induced pluripotent stem cells through somatic cell reprogramming requires a global reorganization of cellular functions.This reorganization occurs in a multi-phased manner and involves a gradual revision of both the epigenome and transcriptome.Recent studies have shown that the large-scale transcriptional changes observed during reprogramming also apply to long noncoding RNAs(lncR NAs),a type of traditionally neglected RNA species that are increasingly viewed as critical regulators of cellular function.Deeper understanding of lncR NAs in reprogramming may not only help to improve this process but also have implications for studying cell plasticity in other contexts,such as development,aging,and cancer.In this review,we summarize the current progress made in profiling and analyzing the role of lncR NAs in various phases of somatic cell reprogramming,with emphasis on the re-establishment of the pluripotency gene network and X chromosome reactivation.
文摘The development of tech niq ues allowing the systematic capture of the RNA-bound proteome has yielded many surprises.Among these,metabolic enzymes have been frequently detected as RNA-binding proteins(RBPs)by different profiling methodologies in various cell types(Hentze et al.,2018).Compared to previous-more simplistic-views,it is now known that cellular metabolism(not only limited to the tricarboxylic acid,TCA,cycle)is compartmentalized.In fact,metabolic enzymes translocate to the nucleus and are enriched at actively transcribed loci,where they sustain epigenetic/epitranscriptomic marks through localized metabolite production(Mews et al.,2017).It has been proposed that the in teraction with nascent RNAs facilitates the anchorage of metabolic enzymes at target loci(Bao et al.,2018),and it is plausible that mature RNAs work in the same way to assist metabolic reactions in the cytoplasm.
