Evidence map›Paper›PMID 31506436›Full record

ArticleCell death & disease2019

Exosome-mediated uptake of mast cell tryptase into the nucleus of melanoma cells: a novel axis for regulating tumor cell proliferation and gene expression.

Fabio Rabelo Melo, Sebastin Santosh Martin, Christian P Sommerhoff, Gunnar Pejler

Open access · goldAbstract read
In one paragraph

Article in Cell death & disease, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
2.1field-weighted citation impact, top 12% 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

31 citing papers in PubMed, 44 citations in OpenAlex.

  1. Article
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  4. Interactions Between Tryptase-Positive Mast Cells and Melanin-AInternational journal of molecular sciences · 2025
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  15. Protease Profile of Tumor-Associated Mast Cells in Melanoma.International journal of molecular sciences · 2022
    Article
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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

4 authors at 2 institutions in 2 countries.

Fabio Rabelo MeloUppsala University, Department of Medical Biochemistry and Microbiology, Uppsala, Sweden. Fabio.Melo@imbim.uu.se.
Sebastin Santosh MartinUppsala University, Department of Medical Biochemistry and Microbiology, Uppsala, Sweden.
Christian P SommerhoffInstitute of Laboratory Medicine, University Hospital, LMU Munich, Munich, Germany.
Gunnar PejlerUppsala University, Department of Medical Biochemistry and Microbiology, Uppsala, Sweden. Gunnar.Pejler@imbim.uu.se.
Uppsala University · SELMU Klinikum · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

It is well established that mast cell accumulation accompanies most malignancies. However, the knowledge of how mast cells functionally impact on tumors is still rudimentary. Here we addressed this issue and show that mast cells have anti-proliferative activity on melanoma cells and that this effect is dependent on tryptase, a tetrameric protease stored in mast cell granules. Mechanistically, tryptase was found to be endocytosed by melanoma cells as cargo of DNA-coated exosomes released from melanoma cells, followed by transport to the nucleus. In the nucleus, tryptase executed clipping of histone 3 and degradation of Lamin B1, accompanied by extensive nuclear remodeling. Moreover, tryptase degraded hnRNP A2/B1, a protein involved in mRNA stabilization and interaction with non-coding RNAs. This was followed by downregulated expression of the oncogene EGR1 and of multiple non-coding RNAs, including oncogenic species. Altogether, these findings establish a new principle for regulation of tumor cell proliferation.

Indexed as

Cell ProliferationGene Expression Regulation, NeoplasticActive Transport, Cell NucleusAnimalsCell Line, TumorCell NucleusExosomesMast CellsMelanomaMiceMice, KnockoutNeoplasm ProteinsTryptasesNeoplasm ProteinsTryptases

Identifiers

PMID31506436
PMCPMC6736983
OpenAlexW2972869609

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.