Cited by 162DNA Repair MechanismsGenetic factors in colorectal cancerGenetic and rare skin diseases.

DNA repair diseases: what do they tell us about Cancer and aging?

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Menck, Carlos FM, Munford, Veridiana·2014·Genetics and Molecular Biology

Abstract

The discovery of DNA repair defects in human syndromes, initially in xeroderma pigmentosum (XP) but later in many others, led to striking observations on the association of molecular defects and patients' clinical phenotypes. For example, patients with syndromes resulting from defective nucleotide excision repair (NER) or translesion synthesis (TLS) present high levels of skin cancer in areas exposed to sunlight. However, some defects in NER also lead to more severe symptoms, such as developmental and neurological impairment and signs of premature aging. Skin cancer in XP patients is clearly associated with increased mutagenesis and genomic instability, reflecting the defective repair of DNA lesions. By analogy, more severe symptoms observed in NER-defective patients have also been associated with defective repair, likely involving cell death after transcription blockage of damaged templates. Endogenously induced DNA lesions, particularly through oxidative stress, have been identified as responsible for these severe pathologies. However, this association is not that clear and alternative explanations have been proposed. Despite high levels of exposure to intense sunlight, patients from tropical countries receive little attention or care, which likely also reflects the lack of understanding of how DNA damage causes cancer and premature aging.

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Crossref · 10.1590/s1415-47572014000200008

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  • Inherited defects in each of the DNA repair pathways are linked to distinct genome instability syndromes characterized by developmental defects, increased incidence of cancer, and features of accelerated aging.

    “Inherited defects in each of the DNA repair pathways are linked to distinct genome instability syndromes (Table 2). Broadly, the syndromes are characterized by developmental defects, increased incidence of cancer and features of accelerated aging (Cleaver, 1968; Menck and Munford, 2014; Wood, 2018).”

    From DNA damage-how and why we age? (2021) · cites this paper as Menck and Munford, 2014

  • Most XP patients have mutations in one of seven genes, XPA through XPG, whose products are involved in nucleotide excision repair (NER).

    “Most XP patients have mutations in one of seven genes (XPA through XPG), whose products are involved in the nucleotide excision repair (NER), a mechanism that removes DNA damage induced by UV radiation, as well as many other lesions that cause distortion of the DNA.”
  • Mutations induced in genes involved in maintenance of genomic integrity and control of the cell cycle result in high predisposition to skin cancers.

    “It is well known that mutations induced in the genes that are involved in the maintenance of genomic integrity and in the control of the cell cycle result in a high predisposition to skin cancers [5].”
  • Deficiencies in repair of endogenous DNA lesions, including those generated during oxidative stress, are proposed as main causes for symptoms involving developmental and neurological problems and premature aging.

    “Deficiencies related to the repair of endogenous DNA lesions, including those generated during oxidative stress, are proposed as the main causes for the symptoms that involve developmental and neurological problems as well as premature aging [5,192].”
  • Twenty to thirty percent of XP patients have neurological and/or developmental problems that are most likely associated with unrepaired DNA damage.

    “Twenty to thirty percent of the XP patients also have neurological and or developmental problems that are most likely associated with unrepaired DNA damage [5].”

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Authors
Menck, C. F., & Munford, V.
Affiliations
  • Universidade de São Paulo, Brazil
  • Universidade de São Paulo (BR)
Venue
Genetics and Molecular Biology
Published
2014
Volume
37
Issue
1 suppl 1
Pages
220-233
ISSN
1415-4757 (ISSN-L)
OpenAlex
W2093400775
Cited by
162
References
105
Citations by year
2026: 2 · 2025: 6 · 2024: 6 · 2023: 12 · 2022: 13 · 2021: 15 · 2020: 16 · 2019: 14 · 2018: 14 · 2017: 13 · 2016: 21 · 2015: 19 · 2014: 11
FWCI
2.01
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Genetics and Molecular Biology (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (publishedVersion, other-oa)
  • Americanae (AECID Library) (submittedVersion, cc-by-nc)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Fundação de Amparo à Pesquisa do Estado de São Paulo
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Genetic factors in colorectal cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and rare skin diseases.
Keywords
xeroderma pigmentosum, nucleotide excision repair, translesion synthesis, premature aging, skin cancer, genomic instability, mutagenesis, oxidative stress, tropical populations

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