The abstract is read at the publisher; the summary is JClub's.
Response-response modeling of human TK6 cell data links DNA alkylation to downstream mutations and structural chromosome aberrations, suggesting threshold-like KERs and enabling downstream KE prediction.
- Why it matters: qAOPs are limited by scarce and heterogeneous quantitative datasets, making it unclear whether existing concentration-response studies can support quantitative genotoxicity pathways.
- What they did: The work harmonized published concentration-response results from TK6 lymphoblastoid cells treated with ethyl methanesulfonate, methyl methanesulfonate, or N-ethyl-N-nitrosourea, spanning eight assays for five KEs, then compared PoDs and fit response-response models.
- The result: Substantial between-study variability and uncertain PoDs were observed, but fitted KERs suggested DNA adduct formation occurs at lower alkylator concentrations than DNA strand breaks and chromosome aberrations, and the models can predict later KEs from earlier ones.
The findingWhy it mattersWhat they didThe result
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