Evidence map›Paper›PMID 34452919›Full record

ArticleScience advances2021

Genome-wide synthetic lethal screen unveils novel CAIX-NFS1/xCT axis as a targetable vulnerability in hypoxic solid tumors.

Shawn C Chafe, Frederick S Vizeacoumar, Geetha Venkateswaran, Oksana Nemirovsky, Shannon Awrey, Wells S Brown, Paul C McDonald, Fabrizio Carta, Andrew Metcalfe, Joanna M Karasinska and 7 more

Open access · goldAbstract read
In one paragraph

Article in Science advances, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 65 papers.

0numbers the graph read from it
0cells of the map it votes in
65citing papers in PubMed
7.9field-weighted citation impact, top 2% 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

65 citing papers in PubMed, 129 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Review
  6. Review
  7. Review
  8. Carbonic Anhydrase Inhibitors in Oncology.Sub-cellular biochemistry · 2026
    Review
  9. Review
  10. Dual-function TA@CaCOJournal of nanobiotechnology · 2025
    Article
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5 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

17 authors at 5 institutions in 3 countries.

Shawn C ChafeDepartment of Integrative Oncology, BC Cancer Research Institute, Vancouver, BC V5Z 1L3, Canada.ORCID 0000-0001-8802-651X
Frederick S VizeacoumarDepartment of Pathology and Laboratory Medicine, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 0W8, Canada.ORCID 0000-0002-4676-2911
Geetha VenkateswaranDepartment of Integrative Oncology, BC Cancer Research Institute, Vancouver, BC V5Z 1L3, Canada.ORCID 0000-0002-4451-3065
Oksana NemirovskyDepartment of Integrative Oncology, BC Cancer Research Institute, Vancouver, BC V5Z 1L3, Canada.
Shannon AwreyDepartment of Integrative Oncology, BC Cancer Research Institute, Vancouver, BC V5Z 1L3, Canada.ORCID 0000-0001-9905-6853
Wells S BrownDepartment of Integrative Oncology, BC Cancer Research Institute, Vancouver, BC V5Z 1L3, Canada.
Paul C McDonaldDepartment of Integrative Oncology, BC Cancer Research Institute, Vancouver, BC V5Z 1L3, Canada.ORCID 0000-0002-7238-2912
Fabrizio CartaNEUROFARBA Department, University of Florence, Via U. Schiff 6, Florence 50019, Italy.ORCID 0000-0002-1141-6146
Andrew MetcalfePancreas Centre BC, Vancouver, BC V3Z 1M9, Canada.ORCID 0000-0001-9292-8778
Joanna M KarasinskaPancreas Centre BC, Vancouver, BC V3Z 1M9, Canada.ORCID 0000-0001-6861-4189
Ling HuangBeth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA.ORCID 0000-0001-8855-788X
Senthil K MuthuswamyBeth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA.ORCID 0000-0001-6564-9634
David F SchaefferPancreas Centre BC, Vancouver, BC V3Z 1M9, Canada.
Daniel J RenoufPancreas Centre BC, Vancouver, BC V3Z 1M9, Canada.
Claudiu T SupuranNEUROFARBA Department, University of Florence, Via U. Schiff 6, Florence 50019, Italy.ORCID 0000-0003-4262-0323
Franco J VizeacoumarDivision of Oncology, College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 0W8, Canada.
Shoukat DedharDepartment of Integrative Oncology, BC Cancer Research Institute, Vancouver, BC V5Z 1L3, Canada. sdedhar@bccrc.ca.ORCID 0000-0003-4355-1657
Beth Israel Deaconess Medical Center · USBC Cancer Agency · CAUniversity of Florence · ITUniversity of Saskatchewan · CAUniversity of British Columbia · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The metabolic mechanisms involved in the survival of tumor cells within the hypoxic niche remain unclear. We carried out a synthetic lethal CRISPR screen to identify survival mechanisms governed by the tumor hypoxia-induced pH regulator carbonic anhydrase IX (CAIX). We identified a redox homeostasis network containing the iron-sulfur cluster enzyme, NFS1. Depletion of NFS1 or blocking cyst(e)ine availability by inhibiting xCT, while targeting CAIX, enhanced ferroptosis and significantly inhibited tumor growth. Suppression of CAIX activity acidified intracellular pH, increased cellular reactive oxygen species accumulation, and induced susceptibility to alterations in iron homeostasis. Mechanistically, inhibiting bicarbonate production by CAIX or sodium-driven bicarbonate transport, while targeting xCT, decreased adenosine 5'-monophosphate-activated protein kinase activation and increased acetyl-coenzyme A carboxylase 1 activation. Thus, an alkaline intracellular pH plays a critical role in suppressing ferroptosis, a finding that may lead to the development of innovative therapeutic strategies for solid tumors to overcome hypoxia- and acidosis-mediated tumor progression and therapeutic resistance.

Indexed as

BicarbonatesNeoplasmsCarbonic Anhydrase IXCarbon-Sulfur LyasesCell HypoxiaCell Line, TumorHumansHypoxiaIronBicarbonatesCarbonic Anhydrase IXCarbon-Sulfur LyasesIronNFS1 protein, human

Identifiers

PMID34452919
PMCPMC8397268
OpenAlexW3195000164

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.