articleCancer ResearchAug 4, 2012Closed access

Rab27a Supports Exosome-Dependent and -Independent Mechanisms That Modify the Tumor Microenvironment and Can Promote Tumor Progression

Centre National de la Recherche Scientifique · University of Lisbon · +6 more institutions

PubMed
Indexed incrossrefpubmed

Abstract

During progression from single cancer cells to a tumor mass and metastases, tumor cells send signals that can subvert their tissue microenvironment. These signals involve soluble molecules and various extracellular vesicles, including a particular type termed exosomes. The specific roles of exosomes secreted in the tumor microenvironment, however, is unclear. The small GTPases RAB27A and RAB27B regulate exocytosis of multivesicular endosomes, which lead to exosome secretion, in human HeLa cells. Here, we used mouse models to show that Rab27a blockade in mammary carcinoma cells decreased secretion of exosomes characterized by endocytic markers, but also of matrix metalloproteinase 9, which is not associated…

Citation impact

635
total citations
FWCI
15.85
Percentile
100%
References
53
Citations per year

Authors

8

Topics & keywords

Keywords
  • Microvesicles
  • Tumor microenvironment
  • Exosome
  • Tumor progression
  • Secretion
  • Cancer research
  • Cell biology
  • Biology
UN Sustainable Development Goals
  • Good health and well-being
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