Membrane-bound ICAM-1 contributes to the onset of proinvasive tumor stroma by controlling acto-myosin contractility in carcinoma-associated fibroblasts

Autor: Stephanie Bonan, Eloise M. Grasset, Cedric Gaggioli, Isabelle Bourget, Nicolas Nottet, Bernard Mari, Sanya-Eduarda Kuzet, Guerrino Meneguzzi, Thomas Bertero, Jean Albrengues
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: Oncotarget
ISSN: 1949-2553
Popis: // Stephanie Bonan 1 , Jean Albrengues 1 , Eloise Grasset 1 , Sanya-Eduarda Kuzet 1 , Nicolas Nottet 2 , Isabelle Bourget 1 , Thomas Bertero 1 , Bernard Mari 2 , Guerrino Meneguzzi 1 , Cedric Gaggioli 1 1 INSERM U1081, CNRS UMR7284, Institute for Research on Cancer and Aging, Nice (IRCAN), University of Nice Sophia Antipolis, Medical School, F-06107, Nice, France 2 Institut de Pharmacologie Moleculaire et Cellulaire (IPMC), CNRS UMR7275, Sophia-Antipolis, France Correspondence to: Cedric Gaggioli, email: gaggioli@unice.fr Keywords: carcinoma-associated fibroblast, ICAM-1, tumor microenvironment, inflammation, extracellular matrix Received: July 13, 2016 Accepted: November 07, 2016 Published: November 25, 2016 ABSTRACT Acto-myosin contractility in carcinoma-associated fibroblasts leads to assembly of the tumor extracellular matrix. The pro-inflammatory cytokine LIF governs fibroblast activation in cancer by regulating the myosin light chain 2 activity. So far, however, how LIF mediates cytoskeleton contractility remains unknown. Using phenotypic screening assays based on knock-down of LIF-dependent genes in fibroblasts, we identified the glycoprotein ICAM-1 as a crucial regulator of stroma fibroblast proinvasive matrix remodeling. We demonstrate that the membrane-bound ICAM-1 isoform is necessary and sufficient to promote inflammation-dependent extracellular matrix contraction, which favors cancer cell invasion. Indeed, ICAM-1 mediates generation of acto-myosin contractility downstream of the Src kinases in stromal fibroblasts. Moreover, acto-myosin contractility regulates ICAM-1 expression by establishing a positive feedback signaling. Thus, targeting stromal ICAM-1 might constitute a possible therapeutic mean to counteract tumor cell invasion and dissemination.
Databáze: OpenAIRE