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024 7 _ |a 10.1074/jbc.M114.628982
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024 7 _ |a 1083-351X
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037 _ _ |a DKFZ-2017-03399
041 _ _ |a eng
082 _ _ |a 570
100 1 _ |a Reuven, Nina
|b 0
245 _ _ |a The Tyrosine Kinase c-Abl Promotes Homeodomain-interacting Protein Kinase 2 (HIPK2) Accumulation and Activation in Response to DNA Damage.
260 _ _ |a Bethesda, Md.
|c 2015
|b Soc.
336 7 _ |a article
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336 7 _ |a Journal Article
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336 7 _ |a ARTICLE
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336 7 _ |a Journal Article
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520 _ _ |a The non-receptor tyrosine kinase c-Abl is activated in response to DNA damage and induces p73-dependent apoptosis. Here, we investigated c-Abl regulation of the homeodomain-interacting protein kinase 2 (HIPK2), an important regulator of p53-dependent apoptosis. c-Abl phosphorylated HIPK2 at several sites, and phosphorylation by c-Abl protected HIPK2 from degradation mediated by the ubiquitin E3 ligase Siah-1. c-Abl and HIPK2 synergized in activating p53 on apoptotic promoters in a reporter assay, and c-Abl was required for endogenous HIPK2 accumulation and phosphorylation of p53 at Ser(46) in response to DNA damage by γ- and UV radiation. Accumulation of HIPK2 in nuclear speckles and association with promyelocytic leukemia protein (PML) in response to DNA damage were also dependent on c-Abl activity. At high cell density, the Hippo pathway inhibits DNA damage-induced c-Abl activation. Under this condition, DNA damage-induced HIPK2 accumulation, phosphorylation of p53 at Ser(46), and apoptosis were attenuated. These data demonstrate a new mechanism for the induction of DNA damage-induced apoptosis by c-Abl and illustrate network interactions between serine/threonine and tyrosine kinases that dictate cell fate.
536 _ _ |a 311 - Signalling pathways, cell and tumor biology (POF3-311)
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650 _ 7 |a Carrier Proteins
|2 NLM Chemicals
650 _ 7 |a Tumor Suppressor Protein p53
|2 NLM Chemicals
650 _ 7 |a HIPK2 protein, human
|0 EC 2.7.1.-
|2 NLM Chemicals
650 _ 7 |a Proto-Oncogene Proteins c-abl
|0 EC 2.7.10.2
|2 NLM Chemicals
650 _ 7 |a Protein-Serine-Threonine Kinases
|0 EC 2.7.11.1
|2 NLM Chemicals
700 1 _ |a Adler, Julia
|b 1
700 1 _ |a Porat, Ziv
|b 2
700 1 _ |a Polonio-Vallon, Tilman
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700 1 _ |a Hofmann, Thomas
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700 1 _ |a Shaul, Yosef
|b 5
773 _ _ |a 10.1074/jbc.M114.628982
|g Vol. 290, no. 27, p. 16478 - 16488
|0 PERI:(DE-600)1474604-9
|n 27
|p 16478 - 16488
|t The journal of biological chemistry
|v 290
|y 2015
|x 1083-351X
909 C O |o oai:inrepo02.dkfz.de:127374
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910 1 _ |a Deutsches Krebsforschungszentrum
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