Evidence map›Paper›PMID 33257655›Full record

ArticleCell death & disease2020

Prohibitin, STAT3 and SH2D4A physically and functionally interact in tumor cell mitochondria.

Carolin Ploeger, Thorben Huth, Raisatun Nisa Sugiyanto, Stefan Pusch, Benjamin Goeppert, Stephan Singer, Redouane Tabti, Ingrid Hausser, Peter Schirmacher, Laurent Désaubry and 1 more

Open access · goldAbstract read
In one paragraph

Article in Cell death & disease, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.4field-weighted citation impact, top 18% 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

21 citing papers in PubMed, 32 citations in OpenAlex.

  1. Article
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  3. Deep learning analysis of urine-derived stem cell mitochondrial morphology as a non-invasive Alzheimer's disease biomarker.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 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

11 authors at 4 institutions in 3 countries.

Carolin PloegerDepartment of General Pathology, Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany.
Thorben HuthDepartment of General Pathology, Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany.
Raisatun Nisa SugiyantoDepartment of General Pathology, Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany.
Stefan PuschDepartment of Neuropathology, Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany.
Benjamin GoeppertDepartment of General Pathology, Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany.ORCID 0000-0002-4135-9250
Stephan SingerDepartment of General Pathology, Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany.
Redouane TabtiINSERM-University of Strasbourg, Regenerative Nanomedicine Laboratory (UMR1260), Faculty of Medicine, FMTS, Strasbourg, France.
Ingrid HausserDepartment of General Pathology, Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany.
Peter SchirmacherDepartment of General Pathology, Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany.
Laurent DésaubryINSERM-University of Strasbourg, Regenerative Nanomedicine Laboratory (UMR1260), Faculty of Medicine, FMTS, Strasbourg, France.ORCID 0000-0002-1192-2970
Stephanie RoesslerDepartment of General Pathology, Institute of Pathology, University Hospital Heidelberg, Heidelberg, Germany. Stephanie.Roessler@med.uni-heidelberg.de.ORCID 0000-0002-5333-5942
Heidelberg University · DEGerman Cancer Research Center · DEInserm · FRTianjin University of Science and Technology · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Chromosome 8p is frequently deleted in various cancer entities and has been shown to correlate with poor patient survival. SH2D4A is located on chromosome 8p and prevents the nuclear translocation of the pro-tumorigenic transcription factor STAT3. Here, we investigated the interaction of SH2D4A and STAT3 to shed light on the non-canonical functions of STAT3 in cooperation with the tumor suppressor SH2D4A. Using an immunoprecipitation-mass spectrometry (IP-MS) approach, we identified the mitochondrial scaffold proteins prohibitin 1 (PHB1) and prohibitin 2 (PHB2) among other proteins to potentially bind to SH2D4A. Co-immunoprecipitation and proximity ligation assays confirmed direct interactions of STAT3, PHB1, and SH2D4A in situ and in vitro. In addition, cell fractionation and immunofluorescence staining revealed co-localization of these proteins with mitochondria. These interactions were selectively interrupted by the small molecule and PHB ligand FL3. Furthermore, FL3 led to a reduction of STAT3 protein levels, STAT3 transcriptional activity, and HIF1α protein stabilization upon dimethyloxalylglycine (DMOG) treatment. Besides, mitochondrial fusion and fission markers, L-OPA1, Mfn1, and FIS1, were dysregulated upon FL3 treatment. This dysregulated morphology was accompanied by significant reduction of mitochondrial respiration, thus, FL3 significantly diminished mitochondrial respirational capacity. In contrast, SH2D4A knockout increased mitochondrial respiration, whereas FL3 reversed the effect of SH2D4A knockout. The here described results indicate that the interaction of SH2D4A and PHB1 is involved in the mitochondrial function and integrity. The demonstrated interaction with STAT3, accompanied by its reduction of transcriptional activity, further suggests that SH2D4A is linking STAT3 to its mitochondrial functions, and inhibition of PHB-interaction may have therapeutic effects in tumor cells with STAT3 activation.

Indexed as

HumansIntracellular Signaling Peptides and ProteinsMitochondriaNeoplasmsProhibitinsRepressor ProteinsSTAT3 Transcription FactorIntracellular Signaling Peptides and ProteinsPHB2 protein, humanPHB protein, humanProhibitinsRepressor ProteinsSH2D4A protein, humanSTAT3 protein, humanSTAT3 Transcription Factor

Identifiers

PMID33257655
PMCPMC7705682
OpenAlexW3108578548

What OpenQuestion holds

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LicenceCC BY
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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.