initiation of stem cell differentiation involves cell cycle-dependent regulation of developmental genes by cyclin d.干细胞分化的启动涉及细胞随周期变动的发育基因的调控细胞周期素.pdfVIP

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initiation of stem cell differentiation involves cell cycle-dependent regulation of developmental genes by cyclin d.干细胞分化的启动涉及细胞随周期变动的发育基因的调控细胞周期素.pdf

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initiation of stem cell differentiation involves cell cycle-dependent regulation of developmental genes by cyclin d.干细胞分化的启动涉及细胞随周期变动的发育基因的调控细胞周期素

Downloaded from on January 9, 2017 - Published by Cold Spring Harbor Laboratory Press Initiation of stem cell differentiation involves cell cycle-dependent regulation of developmental genes by Cyclin D Siim Pauklin,1 Pedro Madrigal,1,2 Alessandro Bertero,1 and Ludovic Vallier1,2 1Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, Anne McLaren Laboratory for Regenerative Medicine, Department of Surgery, University of Cambridge, Madingley, Cambridge CB2 0SZ, United Kingdom; 2Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, United Kingdom Coordination of differentiation and cell cycle progression represents an essential process for embryonic development and adult tissue homeostasis. These mechanisms ultimately determine the quantities of specific cell types that are generated. Despite their importance, the precise molecular interplays between cell cycle machinery and master regulators of cell fate choice remain to be fully uncovered. Here, we demonstrate that cell cycle regulators Cyclin D1–3 control cell fate decisions in human pluripotent stem cells by recruiting transcriptional corepressors and coactivator complexes onto neuroectoderm, mesoderm, and endoderm genes. This activity results in blocking the core transcriptional network necessary for endoderm specification while promoting neuroectoderm factors. The genomic location of Cyclin Ds is determined by their interactions with the transcription factors SP1 and E2Fs, which result in the assembly of cell cycle-controlled transcriptional complexes. These results reveal how the cell cycle orchestrates transcriptional networks and epigenetic modifiers to instruct cell fate decisions. [Keywords: hESCs; cell cycle; Cyclin D; differentiation; endoderm; neuroectoderm] Supplemental material is available for this article. Received September 7, 2015; revised version accepted December 28, 2015. Embryonic development, organogenesis, and tissue repair