Evidence map›Paper›PMID 38896334›Full record

ArticleBreast cancer research and treatment2024

BET-directed PROTACs in triple negative breast cancer cell lines MDA-MB-231 and MDA-MB-436.

Maryana Teufelsbauer, Sandra Stickler, Marie-Therese Eggerstorfer, Dennis Clyde Hammond, Gerhard Hamilton

Abstract read
In one paragraph

Article in Breast cancer research and treatment, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–field-weighted citation impact
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

5 citing papers in PubMed.

  1. Review
  2. Article
  3. Role of circulating tumor cell clusters in breast cancer.Translational breast cancer research : a journal focusing on translational research in breast cancer · 2026
    Review
  4. Article
  5. Review
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

5 authors.

Maryana TeufelsbauerClinics of Plastic and Reconstructive Surgery, Medical University of Vienna, Vienna, Austria.
Sandra SticklerInstitute of Pharmacology, Medical University of Vienna, Vienna, Austria.
Marie-Therese EggerstorferInstitute of Pharmacology, Medical University of Vienna, Vienna, Austria.
Dennis Clyde HammondCenter for Breast and Body Contouring, Grand Rapids, MI, 49546, USA.
Gerhard HamiltonInstitute of Pharmacology, Medical University of Vienna, Vienna, Austria. gerhard.hamilton@meduniwien.ac.at.

Funding

Medical Scientific Fund of the Mayor of the City of Vienna 22214
6 · The paper itself

Abstract

purposeThis study aims to find whether the proliferation and migration of triple negative breast cancer (TNBC) cell lines can be reduced by treatment with bromodomain and extra-terminal domain (BET) inhibitor JQ1 and BET protein targeting chimeras (PROTACs) ARV-771 and MZ1.

methodsCytotoxicity tests, scratch migration assays and western blot proteome profiler arrays for protein expression of cancer-related proteins were used to evaluate the impact of a BET-inhibitor and two BET-directed PROTACs on cell viability, migration and on protein expression.

resultsJQ1 and the PROTACs MZ1 and ARV-771 significantly inhibited the growth and migration of the KRAS G13D-mutated MDA-MB-231 cells. In this cell line, the PROTACs suppressed the residual expression of ERBB2/HER2, 3 and 4 that are essential for the proliferation of breast cancer cells and this cell line proved sensitive to HER2 inhibitors. In contrast, the effects of the PROTACs on the protein expression of MDA-MB-436 cells mostly affected cytokines and their cognate receptors.

conclusionThe degradation of BET-protein by PROTACs demonstrated significant anti-proliferative effects. The KRAS-mutated MDA-MB-231 cells belong to the low-HER2 expressing tumors that have a poorer prognosis compared to HER2-null patients. Since first oral PROTACs against tumor hormone receptors are in clinical trials, this mode of tumor therapy is expected to become an important therapeutic strategy in the future treatment of TNBC.

Indexed as

Cell MovementCell ProliferationTriple Negative Breast NeoplasmsAntineoplastic AgentsAzepinesBromodomain Containing ProteinsCell Line, TumorCell SurvivalErb-b2 Receptor Tyrosine KinasesFemaleGene Expression Regulation, NeoplasticHumansProteinsProteolysis Targeting ChimeraTriazolesAntineoplastic AgentsAzepinesbromodomain and extra-terminal domain protein, humanBromodomain Containing ProteinsERBB2 protein, humanErb-b2 Receptor Tyrosine Kinases(+)-JQ1 compoundProteinsProteolysis Targeting ChimeraTriazolesARV-771BETHER2MZ1PROTACTriple negative breast cancer

Identifiers

PMID38896334
PMCPMC11452555

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Registered trials

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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.