Cited by 116DNA Repair MechanismsCancer-related Molecular PathwaysProtein Kinase Regulation and GTPase Signaling

ATM protein kinase: the linchpin of cellular defenses to stress

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Bhatti, Shahzad, Kozlov, Sergei, Farooqi, Ammad Ahmad, Naqi, Ali, Lavin, Martin, Khanna, Kum Kum·2011·Cellular and Molecular Life Sciences

Abstract

ATM is the most significant molecule involved in monitoring the genomic integrity of the cell. Any damage done to DNA relentlessly challenges the cellular machinery involved in recognition, processing and repair of these insults. ATM kinase is activated early to detect and signal lesions in DNA, arrest the cell cycle, establish DNA repair signaling and faithfully restore the damaged chromatin. ATM activation plays an important role as a barrier to tumorigenesis, metabolic syndrome and neurodegeneration. Therefore, studies of ATM-dependent DNA damage signaling pathways hold promise for treatment of a variety of debilitating diseases through the development of new therapeutics capable of modulating cellular responses to stress. In this review, we have tried to untangle the complex web of ATM signaling pathways with the purpose of pinpointing multiple roles of ATM underlying the complex phenotypes observed in AT patients.

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  • ATM can be directly activated by hydrogen peroxide-induced oxidation without DNA damage, as shown by ATM autophosphorylation at serine 1981, p53 phosphorylation at serine 15, and Chk2 phosphorylation at threonine 68, but not H2AX phosphorylation at serine 139.

    “Notably, ATM was directly activated by hydrogen peroxide-induced oxidation in the absence of DNA damage, evidenced by ATM auto-phosphorylation at Serine 1981, p53 phosphorylation at Serine 15, and Chk2 phosphorylation at Threonine 68, but not by H2AX phosphorylation at Serine139 [74–76].”

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Authors
Bhatti, S., Kozlov, S., Farooqi, A. A., Naqi, A., Lavin, M., & Khanna, K. K.
Affiliations
  • University of Lahore (PK)
  • QIMR Berghofer Medical Research Institute (AU)
Corresponding author
Kozlov, Sergei
Venue
Cellular and Molecular Life Sciences
Published
2011-05-02
Volume
68
Issue
18
Pages
2977-3006
ISSN
  • 1420-682X (ISSN-L)
  • 1420-9071
OpenAlex
W1971822253
Cited by
116
References
275
Citations by year
2026: 3 · 2025: 3 · 2024: 2 · 2023: 3 · 2022: 3 · 2021: 2 · 2020: 6 · 2019: 5 · 2018: 4 · 2017: 12 · 2016: 9 · 2015: 7 · 2014: 15 · 2013: 24 · 2012: 11
FWCI
1.62
Type
journal article
Language
en
Open access
Locations
  • Cellular and Molecular Life Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
Keywords
ATM kinase, DNA damage response, genome stability, DNA repair signaling, cell cycle arrest, carcinogenesis, metabolic syndrome, neurodegeneration, ataxia telangiectasia, stress response, therapeutic target
MeSH terms
MRE11 Homologue Protein, Ataxia Telangiectasia, DNA Damage, DNA-Binding Proteins, Enzyme Activation, Humans, Models, Molecular, Nuclear Proteins, Signal Transduction, Protein Serine-Threonine Kinases, Acid Anhydride Hydrolases, Oxidative Stress, Cell Cycle Proteins, Tumor Suppressor Proteins, Chromatin Assembly and Disassembly, DNA Repair Enzymes, Multiprotein Complexes, Ataxia Telangiectasia Mutated Proteins

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