2. Academic Validation
  3. IL-8, GRO and MCP-1 produced by hepatocellular carcinoma microenvironment determine the migratory capacity of human bone marrow-derived mesenchymal stromal cells without affecting tumor aggressiveness

IL-8, GRO and MCP-1 produced by hepatocellular carcinoma microenvironment determine the migratory capacity of human bone marrow-derived mesenchymal stromal cells without affecting tumor aggressiveness

  • Oncotarget. 2016 Jun 25;8(46):80235-80248. doi: 10.18632/oncotarget.10288.
Juan Bayo 1,  Alejandrina Real 1,  Esteban J Fiore 1,  Mariana Malvicini 1,  Leonardo Sganga 2,  Marcela Bolontrade 3,  Oscar Andriani 4,  Carolina Bizama 5,  Cristóbal Fresno 6,  Osvaldo Podhajcer 2,  Elmer Fernandez 6,  Manuel Gidekel 7 8,  Guillermo D Mazzolini  # 1 4,  Mariana G García  # 1
Affiliations

Affiliations

  • 1 Gene Therapy Laboratory, Instituto de Investigaciones en Medicina Traslacional, Facultad de Ciencias Biomédicas, CONICET, Universidad Austral, Buenos Aires, Argentina.
  • 2 Fundación Instituto Leloir, CONICET, Buenos Aires, Argentina.
  • 3 Stem Cells Laboratory, IBYME, CONICET, Buenos Aires, Argentina.
  • 4 Liver Unit, Hospital Universitario Austral, Derqui-Pilar, Argentina.
  • 5 Universidad Católica, Santiago, Chile.
  • 6 BioScience Data Mining Group, Catholic University of Córdoba, Córdoba, Argentina.
  • 7 Universidad de la Frontera, Temuco, Chile.
  • 8 Universidad Autónoma de Chile, Santiago, Chile.
  • # Contributed equally.
PMID: 29113298 DOI: 10.18632/oncotarget.10288
Abstract

New therapies are needed for advanced hepatocellular carcinoma (HCC) and the use of mesenchymal stromal cells (MSCs) carrying therapeutic genes is a promising strategy. HCC produce cytokines recruiting MSCs to the tumor milieu and modifying its biological properties. Our aim was to study changes generated on human MSCs exposed to conditioned media (CM) derived from human HCC fresh samples and xenografts. All CM shared similar cytokines expression pattern including CXCL1-2-3/GRO, CCL2/MCP-1 and CXCL8/IL-8 being the latter with the highest concentration. Neutralizing and knockdown experiments of CCL2/MCP-1, CXCL8/IL-8, CXCR1 and CXCR2 reduced in vitro MSC migration of ≥20%. Simultaneous CXCR1 and CXCR2 neutralization resulted in 50% of MSC migration inhibition. MSC stimulated with CM (sMSC) from HuH7 or HC-PT-5 showed a 2-fold increase of migration towards the CM compared with unstimulated MSC (usMSC). Gene expression profile of sMSC showed ~500 genes differentially expressed compared with usMSC, being 46 genes related with cell migration and invasion. sMSC increased fibroblasts and endothelial cells chemotaxis. Finally, sMSC with HuH7 CM and then inoculated in HCC tumor bearing-mice did not modify tumor growth. In this work we characterized factors produced by HCC responsible for the changes in MSC chemotactic capacity with would have an impact on therapeutic use of MSCs for human HCC.

Keywords

IL-8; human hepatocellular carcinoma; human mesenchymal stromal cells; migration; tumor microenvironment.

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