ArticleMolecular cell2014
Inositol pyrophosphates mediate the DNA-PK/ATM-p53 cell death pathway by regulating CK2 phosphorylation of Tti1/Tel2.
Article in Molecular cell, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 83 papers.
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Who cites it
83 citing papers in PubMed, 129 citations in OpenAlex.
- Inositol pyrophosphate kinases in health and disease.FEBS letters · 2026Review
- Oncometabolite 5-IPNature chemical biology · 2026Article
- GA-independent DELLA regulation by inositol pyrophosphate in a nonvascular land plant.Nature chemical biology · 2025Article
- Article
- Combined Ribociclib and NU7026 administration enhances radio-sensitivity by inhibiting DNA repair in prostate cancer.Naunyn-Schmiedeberg's archives of pharmacology · 2025Article
- SPOP mutations increase PARP inhibitor sensitivity via CK2/PIAS1/SPOP axis in prostate cancer.JCI insight · 2025Article
- IP6K2 mutations as a novel mechanism of resistance to oncolytic virus therapy.Journal of translational medicine · 2025Article
- C-Terminal Extended Domain-Independent Telomere Maintenance: Modeling the Function of TIN2 Isoforms inInternational journal of molecular sciences · 2025Article
- The Use of Grating-Coupled Interferometry to Study Inositol Pyrophosphate-Protein Interactions.Methods in molecular biology (Clifton, N.J.) · 2025Article
- Secrets of DNA-PKcs beyond DNA repair.NPJ precision oncology · 2024Review
- Targeting CK2 eliminates senescent cells and prolongs lifespan in Zmpste24-deficient mice.Cell death & disease · 2024Article
- Functions, Mechanisms, and therapeutic applications of the inositol pyrophosphates 5PP-InsPJournal of cardiovascular translational research · 2024Review
- Protein pyrophosphorylation by inositol phosphates: a novel post-translational modification in plants?Frontiers in plant science · 2024Review
- Synthesis and biological evaluation of flavonoid-based IP6K2 inhibitors.Journal of enzyme inhibition and medicinal chemistry · 2023Article
- Multi-scale characterisation of homologous recombination deficiency in breast cancer.Genome medicine · 2023Article
- Article
- The Role of Inositol Hexakisphosphate Kinase in the Central Nervous System.Biomolecules · 2023Review
- TTT (Tel2-Tti1-Tti2) Complex, the Co-Chaperone of PIKKs and a Potential Target for Cancer Chemotherapy.International journal of molecular sciences · 2023Review
- Bi-allelic TTI1 variants cause an autosomal-recessive neurodevelopmental disorder with microcephaly.American journal of human genetics · 2023Article
- TTI1 promotes non-small-cell lung cancer progression by regulating the mTOR signaling pathway.Cancer science · 2023Article
23 more citing papers are in PubMed but not listed here.
Corrections and comments
- Erratum issued
Authors and funding
14 authors at 3 institutions in 1 country.
Funding
Abstract
The apoptotic actions of p53 require its phosphorylation by a family of phosphoinositide-3-kinase-related-kinases (PIKKs), which include DNA-PKcs and ATM. These kinases are stabilized by the TTT (Tel2, Tti1, Tti2) cochaperone family, whose actions are mediated by CK2 phosphorylation. The inositol pyrophosphates, such as 5-diphosphoinositol pentakisphosphate (IP7), are generated by a family of inositol hexakisphosphate kinases (IP6Ks), of which IP6K2 has been implicated in p53-associated cell death. In the present study we report an apoptotic signaling cascade linking CK2, TTT, the PIKKs, and p53. We demonstrate that IP7, formed by IP6K2, binds CK2 to enhance its phosphorylation of the TTT complex, thereby stabilizing DNA-PKcs and ATM. This process stimulates p53 phosphorylation at serine 15 to activate the cell death program in human cancer cells and in murine B cells.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.