Evidence map›Paper›PMID 33196045›Full record

ArticleNAR cancer2020

APOBEC3 enzymes mediate efficacy of cisplatin and are epistatic with base excision repair and mismatch repair in platinum response.

Kayla L Conner, Asra N Shaik, Katie A Marshall, Ashley M Floyd, Elmira Ekinci, Jacob Lindquist, Akshada Sawant, Wen Lei, Madison B Adolph, Linda Chelico and 5 more

Open access · goldAbstract read
In one paragraph

Article in NAR cancer, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
0.3field-weighted citation impact, top 42% of its field
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

9 citing papers in PubMed, 11 citations in OpenAlex.

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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

15 authors at 5 institutions in 2 countries.

Kayla L ConnerDepartment of Oncology, Wayne State University School of Medicine and Barbara Ann Karmanos Institute, Detroit, MI 48201, USA.
Asra N ShaikDepartment of Oncology, Wayne State University School of Medicine and Barbara Ann Karmanos Institute, Detroit, MI 48201, USA.ORCID 0000-0002-0193-0651
Katie A MarshallDepartment of Biology, University of Michigan, Ann Arbor, MI 48109, USA.
Ashley M FloydDepartment of Oncology, Wayne State University School of Medicine and Barbara Ann Karmanos Institute, Detroit, MI 48201, USA.
Elmira EkinciDepartment of Oncology, Wayne State University School of Medicine and Barbara Ann Karmanos Institute, Detroit, MI 48201, USA.
Jacob LindquistDepartment of Oncology, Wayne State University School of Medicine and Barbara Ann Karmanos Institute, Detroit, MI 48201, USA.
Akshada SawantRutgers Cancer Institute of New Jersey, 195 Little Albany Street, New Brunswick, NJ 08903, USA.
Wen LeiDepartment of Oncology, Wayne State University School of Medicine and Barbara Ann Karmanos Institute, Detroit, MI 48201, USA.
Madison B AdolphVanderbilt University, Nashville, TN 37232, USA.
Linda ChelicoDepartment of Biochemistry, Microbiology and Immunology, College of Medicine, University of Saskatchewan, 103 Hospital Drive, Saskatoon, SK S7N 5E5, Canada.ORCID 0000-0003-4673-8978
Sachini U SiriwardenaDepartment of Chemistry, Wayne State University, Detroit, MI 48202, USA.
Ashok BhagwatDepartment of Chemistry, Wayne State University, Detroit, MI 48202, USA.ORCID 0000-0003-1188-0579
Seongho KimDepartment of Oncology, Wayne State University School of Medicine and Barbara Ann Karmanos Institute, Detroit, MI 48201, USA.
Michele L CoteDepartment of Oncology, Wayne State University School of Medicine and Barbara Ann Karmanos Institute, Detroit, MI 48201, USA.
Steve M PatrickDepartment of Oncology, Wayne State University School of Medicine and Barbara Ann Karmanos Institute, Detroit, MI 48201, USA.ORCID 0000-0003-3325-6750
Wayne State University · USRutgers, The State University of New Jersey · USUniversity of Michigan · USUniversity of Saskatchewan · CAVanderbilt University · US

Funding

TRAINING PROGRAM IN THE BIOLOGY OF CANCERT32CA009531 · NCI · WAYNE STATE UNIVERSITY · PI Larry H Matherly · 1985 to 2026
$5.3M
Novel role of APOBEC3 enzymes as key mediators of cisplatin sensitivity through aberrant processing of interstrand crosslinksR01CA229535 · NCI · WAYNE STATE UNIVERSITY · PI PATRICK, STEVE M · 2019 to 2024
$2.0M
NCI NIH HHS R01 CA229535NCI NIH HHS T32 CA009531
6 · The paper itself

Abstract

Identifying the mechanisms mediating cisplatin response is essential for improving patient response. Previous research has identified base excision repair (BER) and mismatch repair (MMR) activity in sensitizing cells to cisplatin. Cisplatin forms DNA adducts including interstrand cross-links (ICLs) that distort the DNA helix, forcing adjacent cytosines to become extrahelical. These extrahelical cytosines provide a substrate for cytosine deaminases. Herein, we show that APOBEC3 (A3) enzymes are capable of deaminating the extrahelical cytosines to uracils and sensitizing breast cancer cells to cisplatin. Knockdown of A3s results in resistance to cisplatin and induction of A3 expression in cells with low A3 expression increases sensitivity to cisplatin. We show that the actions of A3s are epistatic with BER and MMR. We propose that A3-induced cytosine deamination to uracil at cisplatin ICLs results in repair of uracils by BER, which blocks ICL DNA repair and enhances cisplatin efficacy and improves breast cancer outcomes.

Identifiers

PMID33196045
PMCPMC7646253
OpenAlexW3097937986

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.