Cited by 280DNA Repair MechanismsPI3K/AKT/mTOR signaling in cancerProtein Kinase Regulation and GTPase Signaling

Common mechanisms of PIKK regulation

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Lovejoy, Courtney A., Cortez, David·2009·DNA Repair

Abstract

Kinases in the phosphoinositide three-kinase-related kinase (PIKK) family include ATM (ataxia-telangiectasia mutated), ATR (ATM- and Rad3-related), DNA-PKcs (DNA-dependent protein kinase catalytic subunit), mTOR (mammalian target of rapamycin), and SMG1 (suppressor with morphological effect on genitalia family member). These atypical protein kinases regulate DNA damage responses, nutrient-dependent signaling, and nonsense-mediated mRNA decay. This review focuses on the mechanisms regulating the PIKK family with a strong emphasis on the DNA damage regulated kinases. We outline common regulatory themes and suggest how discoveries about the regulation of one PIKK can be informative for the other family members.

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Crossref · 10.1016/j.dnarep.2009.04.006

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  • In human cells, ATM is activated by double-strand breaks such as those caused by ionizing radiation, while ATR is activated by RPA-coated ssDNA and mainly triggers checkpoint activation after UV irradiation or replication stress.

    “In fact, ATM (Ataxia Telangiectasia Mutated) is activated by double-strand breaks (DSBs) caused, for example, by ionizing radiation (IR), while ATR (ATM and Rad3-Related) is activated by ssDNA coated with the RPA heterotrimeric complex and mainly triggers checkpoint activation after UV irradiation or replication-stress.”

    From Mind the gap: keeping UV lesions in check (2011) · cites this paper as [40]

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Authors
Lovejoy, C. A., & Cortez, D.
Affiliations
Vanderbilt University (US)
Corresponding author
Cortez, David
Venue
DNA Repair
Publisher
Elsevier BV
Published
2009-09-02
Volume
8
Issue
9
Pages
1004-1008
ISSN
  • 1568-7856 (ISSN-L)
  • 1568-7864
OpenAlex
W2023620387
Cited by
277
References
64
Citations by year
2026: 11 · 2025: 3 · 2024: 14 · 2023: 12 · 2022: 9 · 2021: 23 · 2020: 15 · 2019: 22 · 2018: 16 · 2017: 16 · 2016: 19 · 2015: 15 · 2014: 16 · 2013: 22 · 2012: 17
FWCI
8.60
Type
journal article
Language
en
Open access
Locations
  • DNA repair (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Cancer Institute (R01CA102729)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
Keywords
ATM, ATR, DNA-PKcs, mTOR, SMG1, kinase regulation, DNA damage response, nutrient signaling, nonsense-mediated mRNA decay, protein kinase signaling
MeSH terms
Animals, Humans, Protein Kinases, Protein Processing, Post-Translational, Enzyme Activators, Protein Transport

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