Evidence map›Paper›PMID 34322664›Full record

ArticleCancer drug resistance (Alhambra, Calif.)2021

Cancer stem cells, epithelial-mesenchymal transition, ATP and their roles in drug resistance in cancer.

Haiyun Zhang, Alexander Steed, Milo Co, Xiaozhuo Chen

Open access · diamondAbstract read
In one paragraph

Article in Cancer drug resistance (Alhambra, Calif.), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
2.8field-weighted citation impact, top 7% 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

44 citing papers in PubMed, 44 citations in OpenAlex.

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  8. Ovarian Cancer Susceptibility and Chemosensitivity to KRAS Modulation.International journal of molecular sciences · 2026
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  12. Metabolic reprogramming and plasticity of cancer stem cells.Frontiers in cell and developmental biology · 2026
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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

4 authors at 2 institutions in 1 country.

Haiyun ZhangDepartment of Biological Science, Ohio University, Athens, OH 45701, USA.
Alexander SteedHeritage College of Osteopathic Medicine, Ohio University, Athens, OH 45701, USA.
Milo CoHeritage College of Osteopathic Medicine, Ohio University, Athens, OH 45701, USA.
Xiaozhuo ChenEdison Biotechnology Institute, Ohio University, Athens, OH 45701, USA.
Ohio University · USBiotechnology Institute · US

Funding

Extracellular ATP in cancer: mechanism study of ATP internalization and ATP-induced drug resistance in cancer cells and tumorsR15CA242177 · NCI · OHIO UNIVERSITY ATHENS · PI CHEN, XIAOZHUO · 2019 to 2019
$450k
NCI NIH HHS R15 CA242177
6 · The paper itself

Abstract

The cancer stem cell (CSC) state and epithelial-mesenchymal transition (EMT) activation are tightly interconnected. Cancer cells that acquire the EMT/CSC phenotype are equipped with adaptive metabolic changes to maintain low reactive oxygen species levels and stemness, enhanced drug transporters, anti-apoptotic machinery and DNA repair system. Factors present in the tumor microenvironment such as hypoxia and the communication with non-cancer stromal cells also promote cancer cells to enter the EMT/CSC state and display related resistance. ATP, particularly the high levels of intratumoral extracellular ATP functioning through both signaling pathways and ATP internalization, induces and regulates EMT and CSC. The three of them work together to enhance drug resistance. New findings in each of these factors will help us explore deeper into mechanisms of drug resistance and suggest new resistance-associated markers and therapeutic targets.

Indexed as

ABC transportersapoptosisATP internalizationbiological markersmacropinocytosisTumor microenvironment

Identifiers

PMID34322664
PMCPMC8315560
OpenAlexW3175570129

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.