scholarly journals The B-MYB Transcriptional Network Guides Cell Cycle Progression and Fate Decisions to Sustain Self-Renewal and the Identity of Pluripotent Stem Cells

PLoS ONE ◽  
2012 ◽  
Vol 7 (8) ◽  
pp. e42350 ◽  
Author(s):  
Ming Zhan ◽  
Daniel R. Riordon ◽  
Bin Yan ◽  
Yelena S. Tarasova ◽  
Sarah Bruweleit ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Stem Cells ◽  
Pluripotent Stem Cells ◽  
Cell Cycle Progression ◽  
Transcriptional Network ◽  
Self Renewal ◽  
Cycle Progression

scholarly journals Cell cycle exit and stem cell differentiation are coupled through regulation of mitochondrial activity in the Drosophila testis

2021 ◽  
Author(s):  
Diego Sainz de la Maza ◽  
Silvana Hof-Michel ◽  
Lee Phillimore ◽  
Christian Bökel ◽  
Marc Amoyel
Keyword(s):  
Cell Cycle ◽  
Stem Cells ◽  
Stem Cell ◽  
Cell Cycle Progression ◽  
Stem Cell Differentiation ◽  
Mitochondrial Activity ◽  
Self Renewal ◽  
Cycle Progression ◽  
Cell Identity ◽  
Drosophila Testis

AbstractStem cells maintain tissue homeostasis by proliferating to replace cells lost to damage or natural turnover. Whereas stem and progenitor cells proliferate, fully differentiated cells exit the cell cycle. How cell identity and cell cycle state are coordinated during this process is still poorly understood. The Drosophila testis niche supports germline stem cells and somatic cyst stem cells (CySCs), which are the only proliferating somatic cells in the testis. CySCs give rise to post-mitotic cyst cells and therefore provide a tractable model to ask how stem cell identity is linked to proliferation. We show that the G1/S cyclin, Cyclin E, is required for CySC self-renewal; however, its canonical transcriptional regulator, a complex of the E2f1 and Dp transcription factors is dispensable for self-renewal and cell cycle progression. Nevertheless, we demonstrate that E2f1/Dp activity must be silenced to allow CySCs to differentiate. We show that E2f1/Dp activity inhibits the expression of genes important for mitochondrial activity. Furthermore, promoting mitochondrial activity or biogenesis is sufficient to rescue the differentiation of CySCs with ectopic E2f1/Dp activity but not their exit from the cell cycle. Our findings together indicate that E2f1/Dp coordinates cell cycle progression with stem cell identity by regulating the metabolic state of CySCs.

scholarly journals A switch in cilia-mediated Hedgehog signaling controls muscle stem cell quiescence and cell cycle progression

2019 ◽  
Author(s):  
Sara Betania Cruz-Migoni ◽  
Kamalliawati Mohd Imran ◽  
Aysha Wahid ◽  
Oisharja Rahman ◽  
James Briscoe ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Stem Cells ◽  
Stem Cell ◽  
Cell Cycle Progression ◽  
Ex Vivo ◽  
List Type ◽  
Quiescent State ◽  
Self Renewal ◽  
Cycle Progression

SummaryTissue homeostasis requires a tight control of stem cells to maintain quiescence in normal conditions, and ensure a balance between progenitor cell production and the need to preserve a stem cell pool in repair conditions. Using ex-vivo and in-vivo genetic approaches, we provide evidence that primary cilium-mediated repressive Hedgehog (Hh) signalling is required to maintain skeletal muscle stem cells (MuSCs) in a quiescent state. De-repression and further activation of Hh signalling initiates MuSC entry and progression through the cell cycle, and controls self-renewal to ensure efficient repair of injured muscles. We propose a model whereby disassembly of primary cilia upon MuSC activation induces a switch in Hh signalling from a repressive to active state that controls exit from quiescence. Positive Hh response in bi-potential muscle progenitor cells regulates also cell cycle progression and drives MuSC self-renewal. These findings identify Hh signalling as a major regulator of MuSC activity.HighlightsCilia-containing quiescent MuSCs are Hh signalling suppressedMuSC activation coincides with a switch to active Hh signallingSmo mutation delays cell cycle entry and progression, and causes impaired self-renewalPtch1 mutation promotes exit from quiescence, rapid cell cycle and increased self-renewalGraphical abstract

scholarly journals Expression of Cell Cycle–Related Genes With Cytokine-Induced Cell Cycle Progression of Primitive Hematopoietic Stem Cells

2010 ◽  
Vol 19 (4) ◽  
pp. 453-460 ◽  
Author(s):  
Peter J. Quesenberry ◽  
Gerri J. Dooner ◽  
Michael Del Tatto ◽  
Gerald A. Colvin ◽  
Kevin Johnson ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Stem Cells ◽  
Hematopoietic Stem Cells ◽  
Cell Cycle Progression ◽  
Cycle Progression ◽  
Hematopoietic Stem

scholarly journals Chronic myeloid leukaemia cells require the bone morphogenic protein pathway for cell cycle progression and self-renewal

2018 ◽  
Vol 9 (9) ◽  
Author(s):  
Parto Toofan ◽  
Caroline Busch ◽  
Heather Morrison ◽  
Stephen O’Brien ◽  
Heather Jørgensen ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Chronic Myeloid Leukaemia ◽  
Myeloid Leukaemia ◽  
Cell Cycle Progression ◽  
Bone Morphogenic Protein ◽  
Self Renewal ◽  
Cycle Progression

scholarly journals Skp2 contributes to cell cycle progression in trophoblast stem cells and to placental development

2020 ◽  
Vol 25 (6) ◽  
pp. 427-438 ◽  
Author(s):  
Yuhei Yamauchi ◽  
Akihiro Nita ◽  
Masaaki Nishiyama ◽  
Yoshiharu Muto ◽  
Hideyuki Shimizu ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Stem Cells ◽  
Cell Cycle Progression ◽  
Placental Development ◽  
Cycle Progression ◽  
Trophoblast Stem Cells ◽  
Trophoblast Stem

scholarly journals Babam2 Regulates Cell Cycle Progression and Pluripotency in Mouse Embryonic Stem Cells as Revealed by Induced DNA Damage

Biomedicines ◽  
2020 ◽  
Vol 8 (10) ◽  
pp. 397
Author(s):  
Cheuk Yiu Tenny Chung ◽  
Paulisally Hau Yi Lo ◽  
Kenneth Ka Ho Lee
Keyword(s):  
Cell Cycle ◽  
Stem Cells ◽  
Dna Damage ◽  
Gamma Irradiation ◽  
Cellular Senescence ◽  
Cell Cycle Regulation ◽  
Cell Cycle Progression ◽  
Embryonic Stem ◽  
Cycle Progression ◽  
Cycle Regulation

BRISC and BRCA1-A complex member 2 (Babam2) plays an essential role in promoting cell cycle progression and preventing cellular senescence. Babam2-deficient fibroblasts show proliferation defect and premature senescence compared with their wild-type (WT) counterpart. Pluripotent mouse embryonic stem cells (mESCs) are known to have unlimited cell proliferation and self-renewal capability without entering cellular senescence. Therefore, studying the role of Babam2 in ESCs would enable us to understand the mechanism of Babam2 in cellular aging, cell cycle regulation, and pluripotency in ESCs. For this study, we generated Babam2 knockout (Babam2−/−) mESCs to investigate the function of Babam2 in mESCs. We demonstrated that the loss of Babam2 in mESCs leads to abnormal G1 phase retention in response to DNA damage induced by gamma irradiation or doxorubicin treatments. Key cell cycle regulators, CDC25A and CDK2, were found to be degraded in Babam2−/− mESCs following gamma irradiation. In addition, Babam2−/− mESCs expressed p53 strongly and significantly longer than in control mESCs, where p53 inhibited Nanog expression and G1/S cell cycle progression. The combined effects significantly reduced developmental pluripotency in Babam2−/− mESCs. In summary, Babam2 maintains cell cycle regulation and pluripotency in mESCs in response to induced DNA damage.

scholarly journals A Critical Role of TET1/2 Proteins in Cell-Cycle Progression of Trophoblast Stem Cells

2018 ◽  
Vol 10 (4) ◽  
pp. 1355-1368 ◽  
Author(s):  
Stephanie Chrysanthou ◽  
Claire E. Senner ◽  
Laura Woods ◽  
Elena Fineberg ◽  
Hanneke Okkenhaug ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Stem Cells ◽  
Cell Cycle Progression ◽  
Critical Role ◽  
Cycle Progression ◽  
Trophoblast Stem Cells ◽  
Trophoblast Stem
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