PMID- 21159663 OWN - NLM STAT- MEDLINE DCOM- 20110502 LR - 20201222 IS - 1538-7445 (Electronic) IS - 0008-5472 (Linking) VI - 71 IP - 3 DP - 2011 Feb 1 TI - Induction of monocyte chemoattractant protein-1 and interleukin-10 by TGFbeta1 in melanoma enhances tumor infiltration and immunosuppression. PG - 812-21 LID - 10.1158/0008-5472.CAN-10-2698 [doi] AB - Melanoma progression is associated with the expression of different growth factors, cytokines, and chemokines. Because TGFbeta1 is a pleiotropic cytokine involved not only in physiologic processes but also in cancer development, we analyzed in A375 human melanoma cells, the effect of TGFbeta1 on monocyte chemoattractant protein-1 (MCP-1) and interleukin-10 (IL-10) expression, two known factors responsible for melanoma progression. TGFbeta1 increased the expression of MCP-1 and IL-10 in A375 cells, an effect mediated by the cross-talk between Smad, PI3K (phosphoinositide 3-kinase)/AKT, and BRAF-MAPK (mitogen activated protein kinase) signaling pathways. Supernatants from TGFbeta1-treated A375 cells enhanced MCP-1-dependent migration of monocytes, which, in turn, expressed high levels of TGF,beta1, bFGF, and VEGF mRNA. Moreover, these supernatants also inhibited functional properties of dendritic cells through IL-10-dependent mechanisms. When using in vitro, the TGFbeta1-blocking peptide P144, TGFbeta1-dependent Smad3 phosphorylation, and expression of MCP-1 and IL-10 were inhibited. In vivo, treatment of A375 tumor-bearing athymic mice with P144 significantly reduced tumor growth, associated with a lower macrophage infiltrate and decreased intratumor MCP-1 and VEGF levels, as well as angiogenesis. Finally, in C57BL/6 mice with B16-OVA melanoma tumors, when administered with immunotherapy, P144 decreased tumor growth and intratumor IL-10 levels, linked to enhanced activation of dendritic cells and natural killer cells, as well as anti-OVA T-cell responses. These results show new effects of TGFbeta1 on melanoma cells, which promote tumor progression and immunosuppression, strongly reinforcing the relevance of this cytokine as a molecular target in melanoma. FAU - Diaz-Valdes, Nancy AU - Diaz-Valdes N AD - Universidad de Navarra, Centro de Investigacion Medica Aplicada, Area de Hepatologia y Terapia Genica, Pamplona, Spain. FAU - Basagoiti, Maria AU - Basagoiti M FAU - Dotor, Javier AU - Dotor J FAU - Aranda, Fernando AU - Aranda F FAU - Monreal, Inaki AU - Monreal I FAU - Riezu-Boj, Jose Ignacio AU - Riezu-Boj JI FAU - Borras-Cuesta, Francisco AU - Borras-Cuesta F FAU - Sarobe, Pablo AU - Sarobe P FAU - Feijoo, Esperanza AU - Feijoo E LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20101215 PL - United States TA - Cancer Res JT - Cancer research JID - 2984705R RN - 0 (CCL2 protein, human) RN - 0 (Ccl2 protein, mouse) RN - 0 (Chemokine CCL2) RN - 0 (Smad3 Protein) RN - 0 (Transforming Growth Factor beta1) RN - 130068-27-8 (Interleukin-10) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) SB - IM MH - Amino Acid Sequence MH - Animals MH - Chemokine CCL2/*biosynthesis MH - Female MH - Humans MH - Interleukin-10/*biosynthesis/immunology MH - MAP Kinase Signaling System MH - Melanoma/*immunology MH - Melanoma, Experimental/immunology MH - Mice MH - Mice, Inbred C57BL MH - Mice, Nude MH - Molecular Sequence Data MH - Monocytes/drug effects/immunology MH - Proto-Oncogene Proteins c-akt/metabolism MH - Smad3 Protein/metabolism MH - Transforming Growth Factor beta1/*pharmacology EDAT- 2010/12/17 06:00 MHDA- 2011/05/03 06:00 CRDT- 2010/12/17 06:00 PHST- 2010/12/17 06:00 [entrez] PHST- 2010/12/17 06:00 [pubmed] PHST- 2011/05/03 06:00 [medline] AID - 0008-5472.CAN-10-2698 [pii] AID - 10.1158/0008-5472.CAN-10-2698 [doi] PST - ppublish SO - Cancer Res. 2011 Feb 1;71(3):812-21. doi: 10.1158/0008-5472.CAN-10-2698. Epub 2010 Dec 15.