scholarly journals MYU, a Target lncRNA for Wnt/c-Myc Signaling, Mediates Induction of CDK6 to Promote Cell Cycle Progression

Cell Reports ◽  
2016 ◽  
Vol 16 (10) ◽  
pp. 2554-2564 ◽  
Author(s):  
Yoshihiro Kawasaki ◽  
Mimon Komiya ◽  
Kosuke Matsumura ◽  
Lumi Negishi ◽  
Sakiko Suda ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Cell Cycle Progression ◽  
Cycle Progression ◽  
Promote Cell Cycle Progression

scholarly journals PARP14 regulates cyclin D1 expression to promote cell-cycle progression

Oncogene ◽  
2021 ◽  
Author(s):  
Michael J. O’Connor ◽  
Tanay Thakar ◽  
Claudia M. Nicolae ◽  
George-Lucian Moldovan
Keyword(s):  
Cell Cycle ◽  
Cyclin D1 ◽  
Cell Cycle Progression ◽  
Cycle Progression ◽  
Promote Cell Cycle Progression

scholarly journals Akt/Protein Kinase B-Dependent Phosphorylation and Inactivation of WEE1Hu Promote Cell Cycle Progression at G2/M Transition

2005 ◽  
Vol 25 (13) ◽  
pp. 5725-5737 ◽  
Author(s):  
Kazuhiro Katayama ◽  
Naoya Fujita ◽  
Takashi Tsuruo
Keyword(s):  
Cell Cycle ◽  
Cell Cycle Progression ◽  
Kinase Inhibitor ◽  
Phosphorylation Site ◽  
Cytoplasmic Localization ◽  
M Cell ◽  
Serine Threonine Kinase ◽  
Cycle Progression ◽  
M Phase ◽  
Promote Cell Cycle Progression

ABSTRACT The serine/threonine kinase Akt is known to promote cell growth by regulating the cell cycle in G1 phase through activation of cyclin/Cdk kinases and inactivation of Cdk inhibitors. However, how the G2/M phase is regulated by Akt remains unclear. Here, we show that Akt counteracts the function of WEE1Hu. Inactivation of Akt by chemotherapeutic drugs or the phosphatidylinositide-3-OH kinase inhibitor LY294002 induced G2/M arrest together with the inhibitory phosphorylation of Cdc2. Because the increased Cdc2 phosphorylation was completely suppressed by wee1hu gene silencing, WEE1Hu was associated with G2/M arrest induced by Akt inactivation. Further analyses revealed that Akt directly bound to and phosphorylated WEE1Hu during the S to G2 phase. Serine-642 was identified as an Akt-dependent phosphorylation site. WEE1Hu kinase activity was not affected by serine-642 phosphorylation. We revealed that serine-642 phosphorylation promoted cytoplasmic localization of WEE1Hu. The nuclear-to-cytoplasmic translocation was mediated by phosphorylation-dependent WEE1Hu binding to 14-3-3θ but not 14-3-3β or -σ. These results indicate that Akt promotes G2/M cell cycle progression by inducing phosphorylation-dependent 14-3-3θ binding and cytoplasmic localization of WEE1Hu.

E2f4 regulates fetal erythropoiesis through the promotion of cellular proliferation

Blood ◽  
2006 ◽  
Vol 108 (3) ◽  
pp. 886-895 ◽  
Author(s):  
Kathryn M. Kinross ◽  
Allison J. Clark ◽  
Rosa M. Iazzolino ◽  
Patrick Orson Humbert
Keyword(s):  
Cell Cycle ◽  
Cell Cycle Progression ◽  
Cellular Proliferation ◽  
Cell Cycle Control ◽  
Macrocytic Anemia ◽  
Cycle Progression ◽  
Promote Cell Cycle Progression ◽  
Regulation Of Cell Cycle ◽  
Fetal Erythropoiesis

Abstract The E2F proteins are major regulators of the transcriptional program required to coordinate cell cycle progression and exit. In particular, E2f4 has been proposed to be the principal family member responsible for the regulation of cell cycle exit chiefly through its transcriptional repressive properties. We have previously shown that E2f4–/– mice display a marked macrocytic anemia implicating E2f4 in the regulation of erythropoiesis. However, these studies could not distinguish whether E2f4 was required for differentiation, survival, or proliferation control. Here, we describe a novel function for E2f4 in the promotion of erythroid proliferation. We show that loss of E2f4 results in an impaired expansion of the fetal erythroid compartment in vivo that is associated with impaired cell cycle progression and decreased erythroid proliferation. Consistent with these observations, cDNA microarray analysis reveals cell cycle control genes as one of the major class of genes down-regulated in E2f4–/– FLs, and we provide evidence that E2f4 may directly regulate the transcriptional expression of a number of these genes. We conclude that the macrocytic anemia of E2f4–/– mice results primarily from impaired cellular proliferation and that the major role of E2f4 in fetal erythropoiesis is to promote cell cycle progression and cellular proliferation.

scholarly journals Gid8p (Dcr1p) and Dcr2p Function in a Common Pathway To Promote START Completion in Saccharomyces cerevisiae

2004 ◽  
Vol 3 (6) ◽  
pp. 1627-1638 ◽  
Author(s):  
Ritu Pathak ◽  
Lydia M. Bogomolnaya ◽  
Jinbai Guo ◽  
Michael Polymenis
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Cell Cycle ◽  
Dna Replication ◽  
Cell Cycle Progression ◽  
Cycle Progression ◽  
Dependent Cell ◽  
Promote Cell Cycle Progression ◽  
Initiation Of Dna Replication ◽  
Regulator Genes ◽  
Timing Of Initiation

ABSTRACT How cells determine when to initiate DNA replication is poorly understood. Here we report that in Saccharomyces cerevisiae overexpression of the dosage-dependent cell cycle regulator genes DCR2 (YLR361C) and GID8 (DCR1/YMR135C) accelerates initiation of DNA replication. Cells lacking both GID8 and DCR2 delay initiation of DNA replication. Genetic analysis suggests that Gid8p functions upstream of Dcr2p to promote cell cycle progression. DCR2 is predicted to encode a gene product with phosphoesterase activity. Consistent with these predictions, a DCR2 allele carrying a His338 point mutation, which in known protein phosphatases prevents catalysis but allows substrate binding, antagonized the function of the wild-type DCR2 allele. Finally, we report genetic interactions involving GID8, DCR2, and CLN3 (which encodes a G1 cyclin) or SWI4 (which encodes a transcription factor of the G1/S transcription program). Our findings identify two gene products with a probable regulatory role in the timing of initiation of cell division.

Sign in / Sign up

Export Citation Format

Share Document