Expanding functions of ADP-ribosylation in the maintenance of genome integrity.
Level 5 - mechanism / opinion, no new human data
Narrative review describing biochemical mechanisms without primary data or systematic search.
PubMed 27670719 · doi:10.1016/j.semcdb.2016.09.009
What was done
This is a narrative review synthesizing literature on the mechanistic functions of poly(ADP-ribose) polymerase 1 (PARP1), other PARP family enzymes, and poly(ADP-ribose)-erasing enzymes in the cellular response to genotoxic stress and DNA repair pathways.
What was found
The abstract reports qualitative mechanistic overviews without numerical data. PARP1 is catalytically activated by DNA breaks to attach ADP-ribose polymers onto target proteins using NAD+ as a donor. Recent advances summarized include novel biochemical features of PARP1, roles of non-PARP1 family members, and the identification of enzymes reversing poly(ADP-ribose) modifications, alongside the therapeutic relevance of PARP inhibition in synthetic lethality for homologous recombination-deficient tumors.
Why it matters
Detailing the regulatory network of ADP-ribosylation aids in clarifying fundamental genome maintenance pathways and refining therapeutic applications of PARP inhibitors in cancer treatment.
Limits
The paper is a non-systematic narrative review containing no new primary experimental or clinical data. No quantitative findings or formal study selection criteria are reported in the abstract.
Cited by
- supports When PARP1 detects DNA damage, it consumes NAD+ to synthesize poly(ADP-ribose) polymers that assemble DNA repair enzymes at the damage site.