Evidence map›Paper›PMID 32355248›Full record

ArticleScientific reports2020

Rab27a plays a dual role in metastatic propensity of pancreatic cancer.

Nancy Kren, Daniel Michaud, Sukriti Bagchi, Kevin Greene, Yuliya Pylayeva-Gupta

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 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
2.4field-weighted citation impact, top 11% 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, 28 citations in OpenAlex.

  1. Review
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  8. Cellular and molecular characteristics of the premetastatic niches.Animal models and experimental medicine · 2023
    Review
  9. Article
  10. Article
  11. [Silencing RAB27a inhibits proliferation, invasion and adhesion of triple-negative breast cancer cells].Nan fang yi ke da xue xue bao = Journal of Southern Medical University · 2023
    Article
  12. Article
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  14. Review
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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

5 authors at 2 institutions in 1 country.

Nancy KrenLineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, School of Medicine, Chapel Hill, North Carolina, USA.
Daniel MichaudLineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, School of Medicine, Chapel Hill, North Carolina, USA.
Sukriti BagchiLineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, School of Medicine, Chapel Hill, North Carolina, USA.
Kevin GreeneDepartment of Pathology and Laboratory Medicine, The University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, North Carolina, USA.
Yuliya Pylayeva-GuptaLineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, School of Medicine, Chapel Hill, North Carolina, USA. yuliyap1@email.unc.edu.
University of North Carolina at Chapel Hill · USUniversity of Arizona · US

Funding

Virology Research Program (Program 4)P30CA016086 · NCI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI David Darr · 1985 to 2026
$201.5M
Duke-UNC Chapel Hill Immunotherapy Training GrantT32CA211056 · NCI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI CHAO, NELSON J., SERODY, JONATHAN S. · 2017 to 2021
$2.2M
Mechanisms of B cell specific IL-35 expression in cancer.F31CA239494 · NCI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI MICHAUD, DANIEL E · 2020 to 2021
$62k
NCI NIH HHS F31 CA239494NCI NIH HHS P30 CA016086NCI NIH HHS T32 CA211056
6 · The paper itself

Abstract

Pancreatic cancer is an aggressive malignancy, often diagnosed at metastatic stages. Several studies have implicated systemic factors, such as extracellular vesicle release and myeloid cell expansion, in the establishment of pre-metastatic niches in cancer. The Rab27a GTPase is overexpressed in advanced cancers, can regulate vesicle trafficking, and has been previously linked to non-cell autonomous control of tumor growth and metastasis, however, the role of Rab27a itself in the metastatic propensity of pancreatic cancer is not well understood. Here, we have established a model to study how Rab27a directs formation of the pre-metastatic niche. Loss of Rab27a in pancreatic cancer cells did not decrease tumor growth in vivo, but resulted in altered systemic myeloid cell expansion, both in the primary tumors and at the distant organ sites. In metastasis assays, loss of Rab27a expression in tumor cells injected into circulation compromised efficient outgrowth of metastatic lesions. However, Rab27a knockdown cells had an unexpected advantage at initial steps of metastatic seeding, suggesting that Rab27a may alter cell-autonomous invasive properties of the tumor cells. Gene expression analysis of gene expression revealed that downregulation of Rab27a increased expression of genes involved in epithelial-to-mesenchymal transition pathways, consistent with our findings that primary tumors arising from Rab27a knockdown cells were more invasive. Overall, these data reveal that Rab27a can play divergent roles in regulating pro-metastatic propensity of pancreatic cancer cells: by generating pro-metastatic environment at the distant organ sites, and by suppressing invasive properties of the cancer cells.

Indexed as

Gene Expression Regulation, EnzymologicGene Expression Regulation, NeoplasticAnimalsCell Line, TumorFemaleMaleMiceNeoplasm MetastasisNeoplasm ProteinsPancreatic Neoplasmsrab27 GTP-Binding ProteinsNeoplasm ProteinsRab27a protein, mouserab27 GTP-Binding Proteins

Identifiers

PMID32355248
PMCPMC7193593
OpenAlexW3021955255

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.