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Inhibition of Cdk Activity

Inhibition of Cdk Activity

The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...

M-Cdk Drives Transition Into Mitosis

M-Cdk Drives Transition Into Mitosis

Checkpoints throughout the cell cycle serve as safeguards and gatekeepers, allowing the cell cycle to progress in favorable conditions and slow or halt it in problematic ones. This regulation is known as the cell cycle control system.
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...

Positive Regulator Molecules

Positive Regulator Molecules

Mitotic cell division results in daughter cells that exactly resemble the parent cell. However, errors in the DNA replication or distribution of genetic material may lead to genetic mutations that may be passed down to every new cell formed from the resulting abnormal cell. Propagation of such mutant cells is restricted through checkpoint mechanisms present at different stages of the cell cycle. These checkpoints involve regulator molecules that either promote or demote cell cycle events.

cAMP-dependent Protein Kinase Pathways

cAMP-dependent Protein Kinase Pathways

Cyclic Adenosine Monophosphate (cAMP) is an essential second messenger that activates protein kinase A (PKA) and regulates various biological processes. A single epinephrine molecule binds to GPCR and activates several heterotrimeric G proteins, each stimulating multiple adenylyl cyclase, amplifying the signal, and synthesizing large numbers of cAMP molecules. Small changes in cAMP concentration affect PKA activity. The binding of four cAMP molecules induces a conformational change in PKA,...

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Related Experiment Video

Updated: Jul 19, 2025

Rapid Detection of Neurodevelopmental Phenotypes in Human Neural Precursor Cells NPCs

Rapid Detection of Neurodevelopmental Phenotypes in Human Neural Precursor Cells NPCs

Published on: March 2, 2018

Cdc7 kinase is required for postnatal brain development.

Karin Hori^1,2, Satoshi Yamazaki¹, Chiaki Ohtaka-Maruyama³

¹Genome Dynamics Project, Department of Basic Medical Sciences, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan.

Genes to Cells : Devoted to Molecular & Cellular Mechanisms

|August 16, 2023

Summary

This summary is machine-generated.

The Cdc7 kinase is vital for brain development, with its knockout in neural stem cells causing severe growth defects and impaired brain formation in mice. This highlights Cdc7

Keywords:

Cdc7 kinase DNA replication Nestin-Cre brain development knockout mice

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Last Updated: Jul 19, 2025

Rapid Detection of Neurodevelopmental Phenotypes in Human Neural Precursor Cells NPCs

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Induction of Protein Deletion Through In Utero Electroporation to Define Deficits in Neuronal Migration in Transgenic Models

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Live Imaging of Mitosis in the Developing Mouse Embryonic Cortex

Live Imaging of Mitosis in the Developing Mouse Embryonic Cortex

Published on: June 4, 2014

Area of Science:

Neuroscience
Cell Biology
Genetics

Background:

Cdc7 kinase is essential for DNA replication and chromosomal events.
Understanding Cdc7's role in brain development is crucial.

Purpose of the Study:

To investigate the function of Cdc7 in neural stem cells during brain development.
To analyze the consequences of Cdc7 knockout on neural development and function.

Main Methods:

Generated conditional knockout mice (Cdc7^Fl/Fl Nestin^Cre) to delete Cdc7 in neural stem cells.
Observed and analyzed developmental phenotypes, including growth, survival, motor function, and brain structure.

Main Results:

Cdc7 knockout mice showed severe growth retardation, impaired postnatal brain development, motor dysfunction, and reduced lifespan.
Cerebral cortex layer formation was defective, while cerebellar granule cell numbers decreased, indicating Cdc7's role in proliferation.
Purkinje cell layer formation was impaired, suggesting Cdc7 may also influence cell migration.

Conclusions:

Cdc7 plays critical, differential roles in DNA replication, cell proliferation, and potentially cell migration during mouse brain development.
These findings underscore the importance of Cdc7 kinase in neurodevelopmental processes.