Results 151 to 160 of about 74,242 (343)

Unraveling the interplay between PKA inhibition and Cdk1 activation during oocyte meiotic maturation

Cell Reports
Summary: Oocytes are arrested in prophase I. In vertebrates, meiotic resumption is triggered by hormonal stimulation that results in cAMP-dependent protein kinase (PKA) downregulation leading to Cdk1 activation.
Martina Santoni, Ferdinand Meneau, Nabil Sekhsoukh, Sandrine Castella, Tran Le, Marika Miot, Enrico Maria Daldello   +6 more
doaj   +1 more source

ETAA1 ensures proper chromosome segregation: A matter of S phase or mitosis? [PDF]

, 2019
ETAA1 activates the master checkpoint kinase ATR. Bass and Cortez (2019. J. Cell Biol. https://doi.org/10.1083/jcb.201810058) recently reported an intra-mitotic function of ETAA1 that safeguards chromosome stability.
Achuthankutty, Bass, Bass, Feng, Haahr, Kabeche, Lee, Marina Alejandra González Besteiro, Miosge, Saldivar, Saldivar, Vanesa Gottifredi, Zhou   +12 more
core   +1 more source

SUMOylation regulates tumorigenesis and progression: Molecular mechanisms and therapeutic applications

Interdisciplinary Medicine, EarlyView.
SUMOylation, a dynamic post‐translational modification, acts as a master regulator at the heart of tumor malignancy. Our work delineates how the SUMOylation cycle—mediated by E1/E2/E3 enzymes and reversed by SENPs—orchestrates multiple hallmarks of cancer. The central pathway converges on three critical pathological axes: 1.
Yimao Wu, Zichang Chen, Yinting Hu, Gokhan Zengin, Qian Zhang, Meng‐Yao Li, Wenlong Sun   +6 more
wiley   +1 more source

Chromosome alignment and Kif18A action rely on spindle-localized control of Cdk1 activity

Frontiers in Cell and Developmental Biology
IntroductionDuring mitosis, chromosome alignment at the mitotic spindle equator grants correct chromosome segregation and proper nuclei formation in daughter cells.
Angela Flavia Serpico, Caterina Pisauro, Asia Trano, Domenico Grieco, Domenico Grieco   +4 more
doaj   +1 more source

The aberrant upstream pathway regulations of CDK1 protein were implicated in the proliferation and apoptosis of ovarian cancer cells

Journal of Ovarian Research, 2017
Background Upregulation of Cyclin dependent kinase 1 (CDK1) protein is closely related with the prognosis of several malignant tumors. Chk1-CDC25C-CDK1 signaling and P53-P21WAF1-CDK1 signaling pathways are closely related with the cell cycle G2/M phase ...
Ruitao Zhang, Huirong Shi, Fang Ren, Minghui Zhang, Pengcheng Ji, Wenwen Wang, Chuanna Liu   +6 more
doaj   +1 more source

Phosphorylation of survivin at threonine 34 inhibits its mitotic function and enhances its cytoprotective activity [PDF]

, 2009
Survivin is an essential chromosomal passenger protein required for mitotic progression. It is also an inhibitor of apoptosis and can prevent caspase-mediated cell death.
Barrett, Rachel M.A., Osborne, Toby P., Wheatley, Sally P.   +2 more
core   +1 more source

Calpain Proteases and the Evolving Signaling Network in Insect Embryonic Patterning

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, EarlyView.
Insect embryonic Dorsal‐Ventral (DV) patterning relies on the BMP and Toll pathways to different extents. Calcium‐dependent cystein proteases of the Calpain family also exert an important function to pattern the DV axis. In Drosophila, Calpain A cleaves the Cactus/IkappaB inhibitor and modifies Toll signals in ventral regions of the embryo. In Rhodnius
Alison Julio, Helena Araujo
wiley   +1 more source

Preparation for mitosis requires gradual CDK1 activation

iScience
G2 phase is considered as a time in which cells prepare for the large structural changes in the following mitosis. Starting at completion of DNA replication, CDK1 and PLK1 kinase activities gradually increase throughout G2 phase until reaching levels that initiate mitosis.
Karen Akopyan, Zhiyu Hao, Arne Lindqvist
openaire   +4 more sources

CDK1 makes the meiotic spindle wait [PDF]

Journal of Cell Biology, 2013
![Figure][1] In an oocyte with enhanced CDK1 activity, every kinetochore (red) forms a stable, end-on attachment to a spindle microtubule (green). A delay in cyclin-dependent kinase activity prevents meiotic chromosomes from prematurely attaching to spindle microtubules, [Davydenko et ...
openaire   +1 more source

Mutations in pericentrin cause Seckel syndrome with defective ATR-dependent DNA damage signaling [PDF]

, 2007
Large brain size is one of the defining characteristics of modern humans. Seckel syndrome (MIM 210600), a disorder of markedly reduced brain and body size, is associated with defective ATR-dependent DNA damage signaling.
A Kramer, A Purohit, Anand Saggar, Andrew P Jackson, Ben Hamel, Bertrand Vernay, C Ponting, Carol-Anne Martin, CG Woods, D Chen, D Diviani, Elen Griffith, F Majewski, F Ruschendorf, GK Alderton, GK Alderton, H Dodson, H Loffler, H Niida, HPG Seckel, J Bond, J Bond, JB Dictenberg, K Miyoshi, M Martinez-Campos, M O'Driscoll, Mark O'Driscoll, MR Flory, Nouriya Al Sanna, P Brown, Paola Vagnarelli, Penny A Jeggo, Q Li, RD Martin, S Doxsey, S Sengupta, S Zhang, Sarah Walker, SJ Doxsey, Tom Stiff, WC Zimmerman, William C Earnshaw, Y Shiloh   +42 more
core   +4 more sources