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Cyclin-dependent kinase 5 News

Wednesday, December 3, 2008

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Pharmaceuticals | Free Full-Text | Cell-Penetrating Fragments of … Friday, 23 April 2010, 7:00 am

Cdk5 is essential for neuronal differentiation processes in the brain. Activation of Cdk5 requires the association with the mostly neuron-specific p35 or p39. Overactivation of CDK5 by cleavage of p35. […]

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Phosphorylation of AATYK1 by Cdk5 Suppresses Its Tyrosine … Wednesday, 21 April 2010, 12:05 pm

Apoptosis-associated tyrosine kinase 1 (AATYK1), a novel serine/threonine kinase that is highly expressed in the brain, is involved in neurite extension and apoptosis of cerebellar granule neurons; ho. […]

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Cyclacel’s Innovative and Diverse Oncology Targeted Pipeline Highlighted in … – DMN Newswire (press release) Tuesday, 20 April 2010, 7:42 pm

Cyclacel’s Innovative and Diverse Oncology Targeted Pipeline Highlighted in …DMN Newswire (press release)… currently in Phase 2 clinical trials, selectively inhibits multiple CDK/cyclin targets, i. […]

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J Zhang et al. Cdk5 suppresses the neuronal cell cycle by disrupting… Tuesday, 20 April 2010, 4:58 am

Neurons that reenter a cell cycle after maturation are at increased risk for death, yet the mechanisms by which a normal neuron suppresses the cycle

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Cyclin-Dependent Cancer Confab Preview – Seekingalpha.com Sunday, 18 April 2010, 5:57 am

SCH 727965 is an intravenously-delivered CDK1, CDK2, CDK5, and CDK9 inhibitor. The drug is administered by a 2-hour IV infusion once every 21 days. Merck is currently recruiting patients for a Phase I. […]

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Cyclin-Dependent Kinase 5 Modulates the Transcriptional Activity … Monday, 5 April 2010, 6:48 pm

Cyclin-dependent kinase 5 (CDK5), on the other hand, plays important roles in the … We previously reported that CDK5 phosphorylated the glucocorticoid … www.tripdatabase.com/…/1021921-Cyclin-Dep. […]

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Alternative roles for Cdk5 in learning and synaptic plasticity Monday, 5 April 2010, 6:48 pm

and animals overexpressing one form of a Cdk5 cofactor show that Cdk5 and its cofactors can mediate structural plasticity through phosphorylation of … www3.interscience.wiley.com/journal/114284955/a. […]

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Cloning and characterization of the Drosophila melanogaster CDK5 … Monday, 5 April 2010, 6:48 pm

The D. melanogaster homolog of mammalian CDK5 has been cloned and its chromosomal location determined. The gene for Cdk5 consists of 4 exons separated by 3 … linkinghub.elsevier.com/retrieve/pii/001. […]

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Changes of tau profiles in brains of the hamsters infected with … Monday, 5 April 2010, 6:47 pm

Meanwhile, the transcriptional and expressive levels of GSK3 beta and CDK5 in the brains were tested. Results: The contents of total tau and p-tau at …

Source: "cdk5rss" via JohnH in Google Reader "cdk5rss" via JohnH in Google Reader | 7thSpace Interactive (press release)

Welcome To Biosynthesis – CDK5 Substrate [PK - pT - PKKAKKL ... Monday, 5 April 2010, 6:47 pm

CDK5 Substrate [PK - pT - PKKAKKL], Phosphorylated. Alternate Name: One-Letter Sequence: PK-pT-PKKAKKL. Three-Letter Sequence:H – Pro – Lys – pThr – Pro … www.biosyn.com/frm_ProductDetails.aspx?Id=P. […]

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A Method of Identifying Cdk5/p35 Modulators, and Possible … Monday, 5 April 2010, 6:47 pm

Cyclin-dependent kinase 5 (Cdk5) is a serine/threonine cyclin-dependent kinase that is highly expressed in the central nervous system and controls many …

Source: "cdk5rss" via JohnH in Google Reader "cdk5rss" via JohnH in Google Reader | TechCombo

A Method of Identifying Cdk5/p35 Modulators, and Possible Diagnostic or … – TechCombo (blog) Sunday, 4 April 2010, 9:20 pm

A Method of Identifying Cdk5/p35 Modulators, and Possible Diagnostic or …TechCombo (blog)Cyclin-dependent kinase 5 (Cdk5) is a serine/threonine cyclin-dependent kinase that is highly expressed in th. […]

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Expression of CDK5/p35 in resected patients with non-small cell … Sunday, 4 April 2010, 4:00 pm

Expression of CDK5/p35 in resected patients with non-small cell lung cancer: relation to prognosis. Med Oncol. 2010 Mar 31; Authors: Liu JL, Wang XY, Huang BX, Zhu F, Zhang RG, Wu G Overall outcome of. […]

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Changes of tau profiles in brains of the hamsters infected with scrapie … – 7thSpace Interactive (press release) Thursday, 1 April 2010, 2:14 pm

Changes of tau profiles in brains of the hamsters infected with scrapie …7thSpace Interactive (press release)Meanwhile, the transcriptional and expressive levels of GSK3 beta and CDK5 in the brains. […]

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The Goal of New Neurons in an Old Brain Tuesday, 6 January 2009, 8:10 am

It used to be the common wisdom that adult brains never generated new neurons – that you had what you started with, … called cdk5 plays a pivotal role in this integration. … Whatever the precise m. […]

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Zebrafish Rohon-Beard Neuron Development: Cdk5 in the Midst. Tuesday, 6 January 2009, 8:10 am

Cyclin-dependent kinase 5 (cdk5) is a proline-directed serine/threonine kinase that is activated mostly by association with its activators, p35 and p39. …

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Cellular Senescence Requires CDK5 Repression of Rac1 Activity … Tuesday, 6 January 2009, 8:09 am

We report here a role for CDK5 in induction of senescent cytoskeletal changes. CDK5 activation is upregulated in senescing cells. The increased activity of …

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Blood sugar linked to normal cognitive aging | Machines Like Us Tuesday, 6 January 2009, 8:09 am

… Brain’s impaired ability to sense glucose might play role in type 2 diabetes · Paper: The timing of differentiation of adult hippocampal neurons is crucial for spatial memory · For new neurons i. […]

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Cdk5 antibody [2G2] (ab28441) datasheet | Abcam Tuesday, 6 January 2009, 8:08 am

Mouse monoclonal [2G2] to Cdk5. Cyclin dependent kinase 5 (CdK5) is a member of the cyclindependent kinase family of serine/threonine kinases.

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Scientific Commons: Nuclear localization of Cdk5 is a key … Tuesday, 6 January 2009, 8:08 am

Cyclin-dependent kinase 5 (Cdk5) is a nontraditional Cdk that is primarily active in postmitotic neurons. Its best known substrates are cytoskeletal …

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Missing protein may be key to autism

Wednesday, January 2, 2008

MIT Press Release

Deborah Halber, News Office Correspondent
December 5, 2007

A missing brain protein may be one of the culprits behind autism and other brain disorders, according to researchers at MIT’s Picower Institute for Learning and Memory.

The protein, called CASK, helps in the development of synapses, which neurons use to communicate with one another and which underlie our ability to learn and remember. Improperly formed synapses could lead to mental retardation, and mutations in genes encoding certain synaptic proteins are associated with autism.

In work published in the Dec. 6 issue of Neuron, Li-Huei Tsai, Picower Professor of Neuroscience at MIT, reported that she has uncovered an enzyme that is key to the activity of CASK.

Tsai studies a kinase (kinases are enzymes that change proteins) called Cdk5. While Cdk5’s best-known role is to help new neurons form and migrate to their correct positions during brain development, “emerging evidence supports an important role for Cdk5 at the synapse,” she said.

To gain a better understanding of how Cdk5 promotes synapse formation, Tsai’s lab looked into how Cdk5 interacts with synapse-inducing proteins like CASK. A key scaffolding protein, CASK is one of the first proteins on the scene of a developing synapse.

Scaffolding proteins such as CASK are like site managers, supporting protein-to-protein interactions to ensure that the resulting architecture is sound. Mutations in the genes responsible for Cdk5 and CASK have been found in mental retardation patients.

“We found that Cdk5 is critical for recruiting CASK to do its job for developing synapses,” Tsai said. “Without Cdk5, CASK was not in the right place at the right time, and failed to interact with essential presynaptic components. This, in turn, led to problems with calcium influx.” The flow of calcium in and out of neurons affects processes central to nervous system development and plasticity–its ability to change in response to experience.

Gene mutations and/or deletions in synaptic cell surface proteins and molecules called neurexins and neuroligins have been associated with autism. The problem with CASK recruitment investigated by the Tsai laboratory creates the same result as these genetic changes.

The Picower study also provides the first molecular explanation of how Cdk5, which also may go awry in neurodegenerative diseases such as Alzheimer’s, promotes synapse development.

“There are still a lot of unknowns,” said Tsai, who is also a Howard Hughes Medical Institute investigator. “Causes for psychiatric disorders are still very unclear, but accumulating evidence strongly suggests that alterations in the synaptogenesis program can lead to these serious diseases.”

In addition to Tsai and Picower researcher Benjamin A. Samuels, co-authors are associated with Harvard Medical School; Johns Hopkins University School of Medicine; McLean Hospital in Belmont, Mass.; and Academia Sinica in Taiwan.

This work is supported by the National Institute of Neurological Disorders and Stroke.

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Phosphatidylcholine Biosynthesis via CTP

Sunday, December 30, 2007

[Lipids and Lipoproteins] Phosphatidylcholine Biosynthesis via CTP …
By Carter, J. M., Demizieux, L., Campenot,…
However, inhibition of Cdk5 by roscovitine blocked CTβ2 phosphorylation and reduced neurite outgrowth and branching. These results highlight the importance of CTβ2 in neurons for promoting neurite outgrowth and branching and represent …
<http://www.jbc.org/cgi/content/short/283/1/202>
Journal of Biological Chemistry…
<http://www.jbc.org>

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Absence of CASK Protein May Lead To Autism

Thursday, December 20, 2007

Absence of CASK Protein May Lead To Autism
Medi News Direct – Bangalore,Karnataka,India
The team suggested that cdk5 promotes synapse formation by interacting with
synapse-inducing proteins such as CASK. They concluded that Cdk5-mediated
…
<http://www.medinewsdirect.com/?p=370>

Tau-protein kinase
By tubious
Other names in common use include ATP:tau-protein O-hosphotransferase, brain protein kinase PK40erk, cdk5/p20, CDK5/p23, glycogen synthase kinase-3beta, GSK, protein tau kinase, STK31, tau kinase, [tau-protein] kinase, tau-protein …
<http://tubious.com/tauprotein-kinase>

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Deregulation of CDK5 in Alzheimers Disease

Thursday, December 6, 2007

BioCarta – Charting Pathways of Life
Inhibition of cdk5 or calpain activity reduces cell death in A beta-treated
… A survey of Cdk5 activator p35 and p25 levels in Alzheimers disease
brains. …
<http://www.biocarta.com/pathfiles/m_p35alzheimersPathway.asp>

UniProtKB/Swiss-Prot entry Q00535 [CDK5_HUMAN] Cell division …
“Apoptosis-associated tyrosine kinase is a Cdk5 activator p35 binding
protein.”; Biochem. Biophys. Res. Commun. 310:398-404(2003). …
<http://expasy.org/uniprot/Q00535>

cdk5
<http://genome-www.stanford.edu/cgi-bin/genecards/carddisp?CDK5>

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Cdk5 Modulates Cocaine Reward, Motivation, and Striatal Neuron Excitability

Thursday, November 22, 2007

Cyclin-dependent kinase 5 (Cdk5) regulates dopamine neurotransmission and has been suggested to serve as a homeostatic target of chronic psychostimulant exposure. To study the role of Cdk5 in the modulation of the cellular and behavioral effects of psychoactive drugs of abuse… read more

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Nuclear mechanisms of <b>Cdk5</b>-mediated neuronal apoptosis

Wednesday, November 7, 2007

Studies have shown that cyclin dependent kinase 5 (Cdk5) plays a key role in the apoptosis of mature neurons. Our recent findings suggest that Cdk5 functions in the nucleus to regulate apoptosis. We propose in the present application to …

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Stabilization and activation of p53 induced by <b>Cdk5</b> contributes to <b>…</b>

Wednesday, November 7, 2007

Journal Of Cell Science; 07/01/2007 (AN 17591690) MEDLINE with Full Text.

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Layering and positioning neurons Multipolar-to-biopolar neuronal <b>…</b>

Wednesday, November 7, 2007

A team of Japanese scientists led by Toshio Ohshima, at the RIKEN Brain Science Institute, Wako, has determined that a protein called cyclin-dependent kinase 5 (Cdk5) is required for neurons to develop their proper shape. …

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Neurabin-I Is Phosphorylated by <b>Cdk5</b>: Implications for Neuronal <b>…</b>

Wednesday, November 7, 2007

2007 Aug 15Neurabin-I Is Phosphorylated by Cdk5: Implications for Neuronal Morphogenesis and Cortical MigrationCauseret F (index.php?option=com_comprofiler task=userProfile user=130), Jacobs T, Terao M, Heath O, Hoshino M, Nikolic M. …

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