Evidence map›Paper›PMID 40807411›Full record

ArticleMolecules (Basel, Switzerland)2025

Incorporation and Repair of Epigenetic Intermediates as Potential Chemotherapy Agents.

Jason L Herring, Mark L Sowers, James W Conrad, Linda C Hackfeld, Bruce Chang-Gu, Rahul Dilawari, Lawrence C Sowers

Abstract read
In one paragraph

Article in Molecules (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Jason L HerringDepartment of Pharmacology and Toxicology, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555, USA.ORCID 0009-0003-0335-8745
Mark L SowersDepartment of Pharmacology and Toxicology, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555, USA.ORCID 0000-0001-6474-017X
James W ConradDepartment of Pharmacology and Toxicology, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555, USA.
Linda C HackfeldDepartment of Pharmacology and Toxicology, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555, USA.
Bruce Chang-GuDepartment of Pharmacology and Toxicology, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555, USA.ORCID 0000-0001-8617-0294
Rahul DilawariDepartment of Pharmacology and Toxicology, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555, USA.ORCID 0000-0002-9208-6045
Lawrence C SowersDepartment of Pharmacology and Toxicology, University of Texas Medical Branch, 301 University Boulevard, Galveston, TX 77555, USA.ORCID 0000-0002-8402-4792

Funding

Cytosine Deamination Adducts and Cancer EtiologyR01CA228085 · NCI · UNIVERSITY OF TEXAS MED BR GALVESTON · PI SOWERS, LAWRENCE C · 2019 to 2023
$2.1M
NIH HHS R01CA228085
6 · The paper itself

Abstract

The incorporation of nucleoside analogs into DNA by polymerases, followed by their removal through base excision repair (BER), represents a promising strategy for cancer chemotherapy. In this study, we investigated the incorporation and cytotoxic effects of several nucleoside analogs-some of which are epigenetic reprogramming intermediates-in the U87 glioblastoma cell line. We found that two analogs, 5-hydroxymethyl-2'-deoxyuridine (5HmdU) and trifluorothymidine (TFT), are both cytotoxic and are efficiently incorporated into genomic DNA. In contrast, the 5-carboxy analogs-5-carboxy-2'-deoxyuridine (5CadU) and 5-carboxycytidine (5CadC)-showed no cytotoxicity and were not incorporated into DNA. Interestingly, 5-hydroxymethyl-2'-deoxycytidine (5HmdC) was cytotoxic but was not directly incorporated into DNA. Instead, it was deaminated into 5HmdU, which was then incorporated and likely responsible for the observed toxicity. 5HmdU is actively removed from DNA through the BER pathways. In contrast, TFT remains stably incorporated and is neither excised by BER nor does it hydrolyze into 5CadU-a known substrate for the DNA glycosylase SMUG1. We also found that N

Indexed as

Antineoplastic AgentsDNA RepairEpigenesis, GeneticCell Line, TumorDeoxycytidineGlioblastomaHumansAntineoplastic AgentsDeoxycytidine5HmdU5-hydroxymethyuracilBERchemotherapyDNAepigenetic intermediatesglioblastomaSMUG1TFTtrifluorothymidine

Identifiers

PMID40807411
PMCPMC12348197

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.