Evidence map›Paper›PMID 34845197›Full record

ArticleCell death & disease2021

Decreased PRC2 activity supports the survival of basal-like breast cancer cells to cytotoxic treatments.

Iga K Mieczkowska, Garyfallia Pantelaiou-Prokaki, Evangelos Prokakis, Geske E Schmidt, Lukas C Müller-Kirschbaum, Marcel Werner, Madhobi Sen, Taras Velychko, Katharina Jannasch, Christian Dullin and 7 more

Open access · goldAbstract read
In one paragraph

Article in Cell death & disease, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.2field-weighted citation impact, top 21% 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

16 citing papers in PubMed, 20 citations in OpenAlex.

  1. Article
  2. Article
  3. Precision epigenetic therapies in oncology.Cancer metastasis reviews · 2025
    Review
  4. Article
  5. Review
  6. Article
  7. Review
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  9. Article
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  12. Review
  13. Ezh2 promotes mammary tumor initiation through epigenetic regulation of the Wnt and mTORC1 signaling pathways.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  14. Review
  15. Article
  16. 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

17 authors at 3 institutions in 1 country.

Iga K Mieczkowska *Department of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen, Germany.ORCID http://orcid.org/0000-0002-3684-3945
Garyfallia Pantelaiou-Prokaki *Department of Gynecology and Obstetrics, University Medical Center Göttingen, Göttingen, Germany.ORCID http://orcid.org/0000-0002-1954-4919
Evangelos ProkakisDepartment of Gynecology and Obstetrics, University Medical Center Göttingen, Göttingen, Germany.ORCID http://orcid.org/0000-0001-9297-1821
Geske E SchmidtDepartment of Gastroenterology, GI-Oncology and Endocrinology, University Medical Center Göttingen, Göttingen, Germany.
Lukas C Müller-KirschbaumDepartment of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen, Germany.
Marcel WernerDepartment of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen, Germany.
Madhobi SenDepartment of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen, Germany.
Taras VelychkoDepartment of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen, Germany.
Katharina JannaschClinic for Haematology and Medical Oncology, University Medical Center Göttingen, Göttingen, Germany.
Christian DullinTranslational Molecular Imaging, Max Planck Institute for Experimental Medicine, Göttingen, Germany.
Joanna NappTranslational Molecular Imaging, Max Planck Institute for Experimental Medicine, Göttingen, Germany.
Klaus PantelInstitute of Tumor Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.ORCID http://orcid.org/0000-0001-5736-2772
Harriet WikmanInstitute of Tumor Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.ORCID http://orcid.org/0000-0001-6862-0888
Maria WieseDepartment of Pediatrics and Adolescent Medicine, Division of Pediatric Hematology and Oncology, University Medical Center Göttingen, Göttingen, Germany.
Christof M KrammDepartment of Pediatrics and Adolescent Medicine, Division of Pediatric Hematology and Oncology, University Medical Center Göttingen, Göttingen, Germany.
Frauke AlvesTranslational Molecular Imaging, Max Planck Institute for Experimental Medicine, Göttingen, Germany.
Florian WegwitzDepartment of General, Visceral and Pediatric Surgery, University Medical Center Göttingen, Göttingen, Germany. fwegwit@gwdg.de.ORCID http://orcid.org/0000-0003-0750-6998
Universitätsmedizin Göttingen · DEUniversität Hamburg · DEGesellschaft für wissenschaftliche Datenverarbeitung mbH Göttingen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Breast cancer (BC) is the most common cancer occurring in women but also rarely develops in men. Recent advances in early diagnosis and development of targeted therapies have greatly improved the survival rate of BC patients. However, the basal-like BC subtype (BLBC), largely overlapping with the triple-negative BC subtype (TNBC), lacks such drug targets and conventional cytotoxic chemotherapies often remain the only treatment option. Thus, the development of resistance to cytotoxic therapies has fatal consequences. To assess the involvement of epigenetic mechanisms and their therapeutic potential increasing cytotoxic drug efficiency, we combined high-throughput RNA- and ChIP-sequencing analyses in BLBC cells. Tumor cells surviving chemotherapy upregulated transcriptional programs of epithelial-to-mesenchymal transition (EMT) and stemness. To our surprise, the same cells showed a pronounced reduction of polycomb repressive complex 2 (PRC2) activity via downregulation of its subunits Ezh2, Suz12, Rbbp7 and Mtf2. Mechanistically, loss of PRC2 activity leads to the de-repression of a set of genes through an epigenetic switch from repressive H3K27me3 to activating H3K27ac mark at regulatory regions. We identified Nfatc1 as an upregulated gene upon loss of PRC2 activity and directly implicated in the transcriptional changes happening upon survival to chemotherapy. Blocking NFATc1 activation reduced epithelial-to-mesenchymal transition, aggressiveness, and therapy resistance of BLBC cells. Our data demonstrate a previously unknown function of PRC2 maintaining low Nfatc1 expression levels and thereby repressing aggressiveness and therapy resistance in BLBC.

Indexed as

Epigenesis, GeneticFemaleHumansPolycomb Repressive Complex 2PrognosisSurvival AnalysisTriple Negative Breast NeoplasmsPolycomb Repressive Complex 2

Identifiers

PMID34845197
PMCPMC8630036
OpenAlexW3216330377

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.