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Teiti I, Florie B, Pich C, Gence R, Lajoie-Mazenc I, Rochaix P, Favre G, Tilkin-Mariamé AF. In vivo Effects in Melanoma of ROCK Inhibition-Induced FasL Overexpression. Front Oncol 2015; 5:156. [PMID: 26236689 PMCID: PMC4500923 DOI: 10.3389/fonc.2015.00156] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 06/29/2015] [Indexed: 01/12/2023] Open
Abstract
Ectopic Fas-ligand (FasL) expression in tumor cells is responsible for both tumor escape through tumor counterattack of Fas-positive infiltrating lymphocytes and tumor rejection though inflammatory and immune responses. We have previously shown that RhoA GTPase and its effector ROCK negatively control FasL membrane expression in murine melanoma B16F10 cells. In this study, we found that B16F10 treatment with the ROCK inhibitor H1152 reduced melanoma development in vivo through FasL membrane overexpression. Although H1152 treatment did not reduce tumor growth in vitro, pretreatment of tumor cells with this inhibitor delayed tumor appearance, and slowed tumor growth in C57BL/6 immunocompetent mice. Thanks to the use of mice-bearing mutated Fas receptors (B6/lpr), we found that reduced tumor growth, observed in immunocompetent mice, was linked to FasL overexpression induced by H1152 treatment. Tumor growth analysis in immunosuppressed NUDE and IFN-γ-KO mice highlighted major roles for T lymphocytes and IFN-γ in the H1152-induced tumor growth reduction. Histological analyses of subcutaneous tumors, obtained from untreated versus H1152-treated B16F10 cells, showed that H1152 pretreatment induced a strong intratumoral infiltration of leukocytes. Cytofluorometric analysis showed that among these leukocytes, the number of activated CD8 lymphocytes was increased. Moreover, their antibody-induced depletion highlighted their main responsibility in tumor growth reduction. Subcutaneous tumor growth was also reduced by repeated intravenous injections of a clinical ROCK inhibitor, Fasudil. Finally, H1152-induced ROCK inhibition also reduced pulmonary metastasis implantation independently of T cell-mediated immune response. Altogether, our data suggest that ROCK inhibitors could become interesting pharmacological molecules for melanoma immunotherapy.
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Affiliation(s)
- Iotefa Teiti
- Unité INSERM UMR 1037, CRCT , Toulouse , France ; Université Paul Sabatier , Toulouse , France
| | - Bertrand Florie
- Unité INSERM UMR 1037, CRCT , Toulouse , France ; Université Paul Sabatier , Toulouse , France
| | - Christine Pich
- Unité INSERM UMR 1037, CRCT , Toulouse , France ; Université Paul Sabatier , Toulouse , France
| | - Rémi Gence
- Unité INSERM UMR 1037, CRCT , Toulouse , France ; Université Paul Sabatier , Toulouse , France
| | - Isabelle Lajoie-Mazenc
- Unité INSERM UMR 1037, CRCT , Toulouse , France ; Université Paul Sabatier , Toulouse , France
| | - Philippe Rochaix
- Université Paul Sabatier , Toulouse , France ; Institut Universitaire du Cancer de Toulouse , Toulouse , France
| | - Gilles Favre
- Unité INSERM UMR 1037, CRCT , Toulouse , France ; Université Paul Sabatier , Toulouse , France ; Institut Universitaire du Cancer de Toulouse , Toulouse , France
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Qin YS, Zhang XU, Zhang XY. In vitro and in vivo antitumor effects of 50 to 100-KDa components from B16 melanoma culture supernatant. Oncol Lett 2015; 10:149-155. [PMID: 26170991 DOI: 10.3892/ol.2015.3239] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Accepted: 12/16/2014] [Indexed: 11/05/2022] Open
Abstract
The development of immunological therapies for melanoma has been of considerable concern in recent years. Whole tumor cell lysates have been used to develop antitumor vaccines, but the effective components of the lysates have not been identified. In the present study, protein elements were purified from the B16 supernatant to analyze the in vitro chemotaxis towards mouse spleen lymphocytes using a Boyden chamber. Prior to establishing a B16 melanoma model, C57BL/6 mice were vaccinated with these proteins, and melanoma growth, tumor appearance time and behavioral changes were observed. Next, the cytotoxicity and subsets of the tumor infiltrating lymphocytes, and the histological characteristics of the melanoma were analyzed. The isolated purified fragments of B16 melanoma culture supernatant had strong antitumor effects. The possible antitumor mechanism was delineated, and was identified to possibly be through the activation of cluster of differentiation 8-positive T cells and the promotion of B16 cell differentiation. These methods will provide a novel insight into understanding antitumor immunological mechanisms and provide a potential avenue for immunotherapy.
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Affiliation(s)
- Ying-Song Qin
- Department of Pathophysiology, Xuzhou Medical College, Xuzhou, Jiangsu, P.R. China
| | - X U Zhang
- Department of Otolaryngological, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, P.R. China
| | - Xiang-Yu Zhang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R. China
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Tebbe C, Chhina J, Dar SA, Sarigiannis K, Giri S, Munkarah AR, Rattan R. Metformin limits the adipocyte tumor-promoting effect on ovarian cancer. Oncotarget 2015; 5:4746-64. [PMID: 24970804 PMCID: PMC4148096 DOI: 10.18632/oncotarget.2012] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Omental adipocytes promote ovarian cancer by secretion of adipokines, cytokines and growth factors, and acting as fuel depots. We investigated if metformin modulates the ovarian cancer promoting effects of adipocytes. Effect of conditioned media obtained from differentiated mouse 3T3L1 preadipoctes on the proliferation and migration of a mouse ovarian surface epithelium cancer cell line (ID8) was estimated. Conditioned media from differentiated adipocytes increased the proliferation and migration of ID8 cells, which was attenuated by metformin. Metformin inhibited adipogenesis by inhibition of key adipogenesis regulating transcription factors (CEBPα, CEBPß, and SREBP1), and induced AMPK. A targeted Cancer Pathway Finder RT-PCR (real-time polymerase chain reaction) based gene array revealed 20 up-regulated and 2 down-regulated genes in ID8 cells exposed to adipocyte conditioned media, which were altered by metformin. Adipocyte conditioned media also induced bio-energetic changes in the ID8 cells by pushing them into a highly metabolically active state; these effects were reversed by metformin. Collectively, metformin treatment inhibited the adipocyte mediated ovarian cancer cell proliferation, migration, expression of cancer associated genes and bio-energetic changes. Suggesting, that metformin could be a therapeutic option for ovarian cancer at an early stage, as it not only targets ovarian cancer, but also modulates the environmental milieu.
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Affiliation(s)
- Calvin Tebbe
- Division of Gynecology Oncology, Department of Women's Health, Obstetrics and Gynecology, Henry Ford Hospital, Detroit, MI 48202, USA
| | - Jasdeep Chhina
- Division of Gynecology Oncology, Department of Women's Health, Obstetrics and Gynecology, Henry Ford Hospital, Detroit, MI 48202, USA
| | - Sajad A Dar
- Division of Gynecology Oncology, Department of Women's Health, Obstetrics and Gynecology, Henry Ford Hospital, Detroit, MI 48202, USA
| | - Kalli Sarigiannis
- Division of Gynecology Oncology, Department of Women's Health, Obstetrics and Gynecology, Henry Ford Hospital, Detroit, MI 48202, USA
| | - Shailendra Giri
- Department of Neurology, Henry Ford Hospital, Detroit, MI, USA
| | - Adnan R Munkarah
- Division of Gynecology Oncology, Department of Women's Health, Obstetrics and Gynecology, Henry Ford Hospital, Detroit, MI 48202, USA
| | - Ramandeep Rattan
- Division of Gynecology Oncology, Department of Women's Health, Obstetrics and Gynecology, Henry Ford Hospital, Detroit, MI 48202, USA
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