6533b821fe1ef96bd127ad8f
RESEARCH PRODUCT
Exosomes from metastatic cancer cells transfer amoeboid phenotype to non-metastatic cells and increase endothelial permeability: their emerging role in tumor heterogeneity
Odessa SchillaciRiccardo AlessandroRiccardo AlessandroDolores Di VizioFrancesca MonteleoneSimona TavernaSimona FontanaMaria Antonietta Di Bellasubject
Proteomics0301 basic medicineRHOAEndotheliummetastatic cancer cellScienceCell PlasticityContext (language use)ExosomesArticlePermeability03 medical and health sciences0302 clinical medicineSettore BIO/13 - Biologia ApplicataCell Line Tumormetastatic cancer cells; Exosomes; tumor heterogeneitytumor heterogeneityHuman Umbilical Vein Endothelial CellsmedicineHumansEndotheliumrho-Associated KinasesMultidisciplinarybiologyQThrombinRPhenotypeMicrovesicles3. Good healthCell biologyEndothelial stem cellExosomePhenotype030104 developmental biologymedicine.anatomical_structureTumor progression030220 oncology & carcinogenesisColonic NeoplasmsCancer cellbiology.proteinMedicinerhoA GTP-Binding ProteinSignal Transductiondescription
AbstractThe goal of this study was to understand if exosomes derived from high-metastatic cells may influence the behavior of less aggressive cancer cells and the properties of the endothelium. We found that metastatic colon cancer cells are able to transfer their amoeboid phenotype to isogenic primary cancer cells through exosomes, and that this morphological transition is associated with the acquisition of a more aggressive behavior. Moreover, exosomes from the metastatic line (SW620Exos) exhibited higher ability to cause endothelial hyperpermeability than exosomes from the non metastatic line (SW480Exos). SWATH-based quantitative proteomic analysis highlighted that SW620Exos are significantly enriched in cytoskeletal-associated proteins including proteins activating the RhoA/ROCK pathway, known to induce amoeboid properties and destabilization of endothelial junctions. In particular, thrombin was identified as a key mediator of the effects induced by SW620Exos in target cells, in which we also found a significant increase of RhoA activity. Overall, our results demonstrate that in a heterogeneous context exosomes released by aggressive sub-clones can contribute to accelerate tumor progression by spreading malignant properties that affect both the tumor cell plasticity and the endothelial cell behavior.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-07-05 |