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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
9
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pubmed:dateCreated |
2000-6-2
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pubmed:abstractText |
Neuronal death evoked by DNA damage requires cyclin-dependent kinase 4 (Cdk4) and 6 activity and is accompanied by elevation of cyclin D1-associated kinase activity. Because Cdk4/6 phosphorylates retinoblastoma protein (pRb) family members that then modulate the transcriptional activity of E2F/DP1 complexes, we examined the involvement of these components in DNA damage-evoked neuronal death. Camptothecin induced rapid pRb and p107 phosphorylation at a Cdk4/6 phosphorylation site followed by selective loss of Rb and p107. The CDK inhibitor flavopiridol suppressed pRb and p107 phosphorylation and loss, implicating CDK activity in these events. Moreover, the loss of pRb and p107 appeared to be mediated by caspases because it was blocked by general caspase inhibitors. The role of phosphorylation and pRb and p107 loss in the death pathway was indicated by observations that virally mediated expression of pRb mutated at sites of phosphorylation, including the Cdk4/6 site, inhibited death. Finally, expression of dominant-negative versions of DP1, known to compromise E2F transcriptional activity, protects cortical neurons from death induced by camptothecin and sympathetic neurons from death evoked by UV treatment. Taken together, these results implicate the CDK-pRb/E2F/DP pathway as a required element in the neuronal death evoked by DNA damage.
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Arid4a protein, mouse,
http://linkedlifedata.com/resource/pubmed/chemical/CDK4 protein, human,
http://linkedlifedata.com/resource/pubmed/chemical/CDK6 protein, human,
http://linkedlifedata.com/resource/pubmed/chemical/Camptothecin,
http://linkedlifedata.com/resource/pubmed/chemical/Carrier Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/Cdk4 protein, mouse,
http://linkedlifedata.com/resource/pubmed/chemical/Cdk4 protein, rat,
http://linkedlifedata.com/resource/pubmed/chemical/Cdk6 protein, mouse,
http://linkedlifedata.com/resource/pubmed/chemical/Cdk6 protein, rat,
http://linkedlifedata.com/resource/pubmed/chemical/Cell Cycle Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/Cyclin D1,
http://linkedlifedata.com/resource/pubmed/chemical/Cyclin E,
http://linkedlifedata.com/resource/pubmed/chemical/Cyclin-Dependent Kinase 4,
http://linkedlifedata.com/resource/pubmed/chemical/Cyclin-Dependent Kinase 6,
http://linkedlifedata.com/resource/pubmed/chemical/Cyclin-Dependent Kinases,
http://linkedlifedata.com/resource/pubmed/chemical/DNA-Binding Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/E2F Transcription Factors,
http://linkedlifedata.com/resource/pubmed/chemical/Enzyme Inhibitors,
http://linkedlifedata.com/resource/pubmed/chemical/Nuclear Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/Protein-Serine-Threonine Kinases,
http://linkedlifedata.com/resource/pubmed/chemical/Proto-Oncogene Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/RBL1 protein, human,
http://linkedlifedata.com/resource/pubmed/chemical/Rbl1 protein, mouse,
http://linkedlifedata.com/resource/pubmed/chemical/Retinoblastoma Protein,
http://linkedlifedata.com/resource/pubmed/chemical/Retinoblastoma-Binding Protein 1,
http://linkedlifedata.com/resource/pubmed/chemical/Retinoblastoma-Like Protein p107,
http://linkedlifedata.com/resource/pubmed/chemical/TFDP1 protein, human,
http://linkedlifedata.com/resource/pubmed/chemical/Tfdp1 protein, mouse,
http://linkedlifedata.com/resource/pubmed/chemical/Transcription Factor DP1,
http://linkedlifedata.com/resource/pubmed/chemical/Transcription Factors
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pubmed:status |
MEDLINE
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pubmed:month |
May
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pubmed:issn |
1529-2401
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pubmed:author |
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pubmed:issnType |
Electronic
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pubmed:day |
1
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pubmed:volume |
20
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
3104-14
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pubmed:dateRevised |
2009-11-19
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pubmed:meshHeading |
pubmed-meshheading:10777774-Animals,
pubmed-meshheading:10777774-Camptothecin,
pubmed-meshheading:10777774-Carrier Proteins,
pubmed-meshheading:10777774-Cell Cycle Proteins,
pubmed-meshheading:10777774-Cell Death,
pubmed-meshheading:10777774-Cells, Cultured,
pubmed-meshheading:10777774-Cerebral Cortex,
pubmed-meshheading:10777774-Cyclin D1,
pubmed-meshheading:10777774-Cyclin E,
pubmed-meshheading:10777774-Cyclin-Dependent Kinase 4,
pubmed-meshheading:10777774-Cyclin-Dependent Kinase 6,
pubmed-meshheading:10777774-Cyclin-Dependent Kinases,
pubmed-meshheading:10777774-DNA Damage,
pubmed-meshheading:10777774-DNA-Binding Proteins,
pubmed-meshheading:10777774-E2F Transcription Factors,
pubmed-meshheading:10777774-Enzyme Inhibitors,
pubmed-meshheading:10777774-Humans,
pubmed-meshheading:10777774-Mice,
pubmed-meshheading:10777774-Neurons,
pubmed-meshheading:10777774-Nuclear Proteins,
pubmed-meshheading:10777774-Protein-Serine-Threonine Kinases,
pubmed-meshheading:10777774-Proto-Oncogene Proteins,
pubmed-meshheading:10777774-Rats,
pubmed-meshheading:10777774-Retinoblastoma Protein,
pubmed-meshheading:10777774-Retinoblastoma-Binding Protein 1,
pubmed-meshheading:10777774-Retinoblastoma-Like Protein p107,
pubmed-meshheading:10777774-Transcription Factor DP1,
pubmed-meshheading:10777774-Transcription Factors
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pubmed:year |
2000
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pubmed:articleTitle |
Involvement of retinoblastoma family members and E2F/DP complexes in the death of neurons evoked by DNA damage.
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pubmed:affiliation |
Neuroscience Research Institute, University of Ottawa, Ottawa, Ontario, K1H 8M5, Canada. dpark@uottawa.ca
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, Non-U.S. Gov't
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