First-pass extracted concept

gamma-hydroxy-1,N(2)-propano-2'-deoxyguanosine

Candidate: concept label1 source documents5 linked claims

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Aliases

gamma-HOPdG, gamma-OH-PdG

Extracted Explainers

What the tool is doing

This is the major acrolein-derived deoxyguanosine adduct highlighted by the review. It is linked to interstrand DNA-DNA and DNA-peptide/protein cross-links that may contribute to mutagenicity.

Source 1DOI PubMed

What problem it solves

It offers a major-lesion explanation for acrolein genotoxicity and cross-link formation. The review uses it to frame why acrolein exposure can be strongly damaging at the DNA level.

Source 1DOI PubMed

What it does not solve

It does not provide a consistent mutagenicity readout across studies, because the review says data for gamma-HOPdG are conflicting. Repair by polymerase-associated processes may reduce its mutagenic effect.

Source 1DOI PubMed

Alternatives

The review contrasts gamma-HOPdG with alpha-HOPdG, a less abundant but more persistent lesion. The differing behavior of these two adducts is presented as a source of inconsistency in the literature.

Source 1DOI PubMed

Evidence Snippets

gamma-HOPdG is the major DNA adduct and it can lead to interstrand DNA-DNA and DNA-peptide/protein cross-links, which may induce strong mutagenicity; however, gamma-HOPdG can be repaired by some DNA polymerases complex and lessen its mutagenic effects.

Evidence 1Source 1DOI PubMedprovenance

Supporting Sources

Source 1review2010Toxicology Mechanisms and MethodsDOI PubMed

1 evidence snippet 5 linked claims Claim 1 Claim 2 Claim 3

Linked Claims

Claim 1comparative mutagenicitysupports2010Source 1DOI PubMed

Alpha-HOPdG and gamma-HOPdG differ in mutagenic behavior, with gamma-HOPdG being the major adduct and alpha-HOPdG being less abundant but harder to repair.

Claim 2evidence conflict summarysupports2010Source 1DOI PubMed

Inconsistent results in acrolein mutagenicity studies are attributed at least partly to formation of multiple acrolein-DNA adducts and their differential repair in diverse detection systems.

Claim 3human relevance summarysupports2010Source 1DOI PubMed

Detection of acrolein-DNA adducts in human lung tissues and analysis of p53 mutation spectra in acrolein-treated cells may inform mechanisms of acrolein mutagenicity.

Claim 4mechanistic summarysupports2010Source 1DOI PubMed

Acrolein mutagenicity relies on formation of DNA adducts.

Claim 5mechanistic summarymixed2010Source 1DOI PubMed

Gamma-HOPdG can generate interstrand DNA-DNA and DNA-peptide/protein cross-links that may contribute to mutagenicity, but repair by some DNA polymerase complexes can lessen its mutagenic effects.