Evidence map›Paper›PMID 33146201›Full record

ArticleMetallomics : integrated biometal science2020

Altered copper homeostasis underlies sensitivity of hepatocellular carcinoma to copper chelation.

Caroline I Davis, Xingxing Gu, Ryan M Kiefer, Martina Ralle, Terence P Gade, Donita C Brady

Open access · hybridAbstract read
In one paragraph

Article in Metallomics : integrated biometal science, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 98 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
98citing papers in PubMed, 2 pooled it
10.3field-weighted citation impact, top 1% 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

98 citing papers in PubMed, 2 syntheses or guidelines pooled it, 153 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Review
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  6. Review
  7. Article
  8. Review
  9. Article
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  11. Article
  12. Role of cuproptosis in digestive system tumors (Review).International journal of molecular medicine · 2026
    Review
  13. Review
  14. Article
  15. Article
  16. Review
  17. Association of Copper with Atherosclerosis and Treatment Strategies.Journal of cardiovascular translational research · 2025
    Review
  18. Review
  19. Targeting cuproptosis in liver cancer: Molecular mechanisms and therapeutic implications.Apoptosis : an international journal on programmed cell death · 2025
    Review
  20. Article

38 more citing papers are in PubMed but not listed here.

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

6 authors at 3 institutions in 1 country.

Caroline I DavisBiochemistry and Molecular Biophysics Graduate Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
Xingxing Gu
Ryan M Kiefer
Martina Ralle
Terence P Gade
Donita C Brady
University of Pennsylvania · USCancer Research Institute · USOregon Health & Science University · US

Funding

TRANSGENIC AND CHIMERIC MOUSE COREP30DK050306 · NIDDK · UNIVERSITY OF PENNSYLVANIA · PI REBECCA G WELLS · 1997 to 2026
$32.5M
Molecular and Cellular Mechanisms of Copper-Dependent Nutrient Signaling and MetabolismR35GM124749 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI Donita C Brady · 2017 to 2026
$4.6M
Howard Hughes Medical InstituteNIDDK NIH HHS P30 DK050306
6 · The paper itself

Abstract

Hepatocellular carcinoma (HCC), the most common primary liver cancer, of which ∼800 000 new cases will be diagnosed worldwide this year, portends a five-year survival rate of merely 17% in patients with unresectable disease. This dismal prognosis is due, at least in part, from the late stage of diagnosis and the limited efficacy of systemic therapies. As a result, there is an urgent need to identify risk factors that contribute to HCC initiation and provide targetable vulnerabilities to improve patient survival. While myriad risk factors are known, elevated copper (Cu) levels in HCC patients and the incidence of hepatobiliary malignancies in Wilson disease patients, which exhibit hereditary liver Cu overload, suggests the possibility that metal accumulation promotes malignant transformation. Here we found that expression of the Cu transporter genes ATP7A, ATP7B, SLC31A1, and SLC31A2 was significantly altered in liver cancer samples and were associated with elevated Cu levels in liver cancer tissue and cells. Further analysis of genomic copy number data revealed that alterations in Cu transporter gene loci correlate with poorer survival in HCC patients. Genetic loss of the Cu importer SLC31A1 (CTR1) or pharmacologic suppression of Cu decreased the viability, clonogenic survival, and anchorage-independent growth of human HCC cell lines. Mechanistically, CTR1 knockdown or Cu chelation decreased glycolytic gene expression and downstream metabolite utilization and as a result forestalled tumor cell survival after exposure to hypoxia, which mimics oxygen deprivation elicited by transarterial embolization, a standard-of-care therapy used for patients with unresectable HCC. Taken together, these findings established an association between altered Cu homeostasis and HCC and suggest that limiting Cu bioavailability may provide a new treatment strategy for HCC by restricting the metabolic reprogramming necessary for cancer cell survival.

Indexed as

Carcinoma, HepatocellularCell Line, TumorChelating AgentsCopperCopper Transporter 1Copper-Transporting ATPasesHomeostasisHumansLiver NeoplasmsMolybdenumSLC31 ProteinsATP7A protein, humanChelating AgentsCopperCopper Transporter 1Copper-Transporting ATPasesMolybdenumSLC31A1 protein, humanSLC31A2 protein, humanSLC31 Proteinstetrathiomolybdate

Identifiers

PMID33146201
PMCPMC8315290
OpenAlexW3095121729

What OpenQuestion holds

Textmetadata
LicenceTDM
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.