Evidence map›Paper›PMID 30526855›Full record

ArticleeLife2018

Replication study: Melanoma exosomes educate bone marrow progenitor cells toward a pro-metastatic phenotype through MET.

Jeewon Kim, Amirali Afshari, Ranjita Sengupta, Vittorio Sebastiano, Archana Gupta, Young H Kim, Reproducibility Project: Cancer Biology

Open access · goldAbstract read
In one paragraph

Article in eLife, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.2field-weighted citation impact, top 20% 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

20 citing papers in PubMed, 26 citations in OpenAlex.

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  6. Lipid carriers for mRNA delivery.Acta pharmaceutica Sinica. B · 2023
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  16. Exosomes: Emerging Diagnostic and Therapeutic Targets in Cutaneous Diseases.International journal of molecular sciences · 2020
    Review
  17. Review
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  20. 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

7 authors at 5 institutions in 1 country.

Jeewon KimStanford Transgenic, Knockout and Tumor Model Center, Stanford Cancer Institute, California, United States.
Amirali Afshari *System Biosciences LLC, California, United States.
Ranjita Sengupta *System Biosciences LLC, California, United States.
Vittorio SebastianoStanford Transgenic, Knockout and Tumor Model Center, Stanford Cancer Institute, California, United States.
Archana GuptaSystem Biosciences LLC, California, United States.
Young H KimSystem Biosciences LLC, California, United States.
Reproducibility Project: Cancer Biology
Center for Open Science · USSystem Biosciences (United States) · USScience Exchange (United States) · USCalifornia Institute for Regenerative Medicine · USStanford Cancer Institute

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

As part of the Reproducibility Project: Cancer Biology we published a Registered Report (Lesnik et al., 2016) that described how we intended to replicate selected experiments from the paper 'Melanoma exosomes educate bone marrow progenitor cells toward a pro-metastatic phenotype through MET' (Peinado et al., 2012). Here we report the results. We regenerated tumor cells stably expressing a short hairpin to reduce Met expression (shMet) using the same highly metastatic mouse melanoma cell line (B16-F10) as the original study, which efficiently downregulated Met in B16F10 cells similar to the original study (Supplementary Figure 5A; Peinado et al., 2012). Exosomes from control cells expressed Met, which was reduced in exosomes from shMet cells; however, we were unable to reliably detect phosphorylated Met in exosomes. We tested the effect of exosome-dependent Met signaling on primary tumor growth and metastasis. Similar to the results in the original study, we did not find a statistically significant change in primary tumor growth. Measuring lung and femur metastases, we found a small increase in metastatic burden with exosomes from control cells that was diminished when Met expression was reduced; however, while the effects were in the same direction as the original study (Figure 4E; Peinado et al., 2012), they were not statistically significant. Differences between the original study and this replication attempt, such as level of knockdown efficiency, cell line genetic drift, sample sizes, study endpoints, and variability of observed metastatic burden, are factors that might have influenced the outcomes. Finally, we report meta-analyses for each result.

Indexed as

Gene Expression Regulation, NeoplasticAnimalsBone Marrow CellsBone NeoplasmsCell CommunicationCell Line, TumorExosomesFemaleLung NeoplasmsLymphatic MetastasisMelanoma, ExperimentalMesenchymal Stem CellsMiceMice, Inbred C57BLPhenotypeProto-Oncogene Proteins c-metProto-Oncogene Proteins c-metRNA, Small Interferingcancer biologyexosomesMetmetasciencemousereplicationreproducibilityReproducibility Project: Cancer Biology

Identifiers

PMID30526855
PMCPMC6289570
OpenAlexW2904929559

What OpenQuestion holds

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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.