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OncoTherad® (MRB-CFI-1) nano-immunotherapy reduced tumoral progression in non-muscle invasive bladder cancer through activation of Toll-like signaling pathway. Tissue Cell 2022; 76:101762. [DOI: 10.1016/j.tice.2022.101762] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 02/07/2022] [Accepted: 02/18/2022] [Indexed: 11/18/2022]
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Du W, Frankel TL, Green M, Zou W. IFNγ signaling integrity in colorectal cancer immunity and immunotherapy. Cell Mol Immunol 2022; 19:23-32. [PMID: 34385592 PMCID: PMC8752802 DOI: 10.1038/s41423-021-00735-3] [Citation(s) in RCA: 54] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 06/21/2021] [Indexed: 02/07/2023] Open
Abstract
The majority of colorectal cancer patients are not responsive to immune checkpoint blockade (ICB). The interferon gamma (IFNγ) signaling pathway drives spontaneous and ICB-induced antitumor immunity. In this review, we summarize recent advances in the epigenetic, genetic, and functional integrity of the IFNγ signaling pathway in the colorectal cancer microenvironment and its immunological relevance in the therapeutic efficacy of and resistance to ICB. Moreover, we discuss how to target IFNγ signaling to inform novel clinical trials to treat patients with colorectal cancer.
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Affiliation(s)
- Wan Du
- Department of Surgery, University of Michigan School of Medicine, Ann Arbor, MI, USA
- Center of Excellence for Cancer Immunology and Immunotherapy, Rogel Cancer Center, University of Michigan School of Medicine, Ann Arbor, MI, USA
| | - Timothy L Frankel
- Department of Surgery, University of Michigan School of Medicine, Ann Arbor, MI, USA
| | - Michael Green
- Center of Excellence for Cancer Immunology and Immunotherapy, Rogel Cancer Center, University of Michigan School of Medicine, Ann Arbor, MI, USA
- Department of Radiation Oncology, University of Michigan School of Medicine, Ann Arbor, MI, USA
- Veterans Affairs Ann Arbor Healthcare System, University of Michigan School of Medicine, Ann Arbor, MI, USA
- Graduate Programs in Immunology, University of Michigan School of Medicine, Ann Arbor, MI, USA
| | - Weiping Zou
- Department of Surgery, University of Michigan School of Medicine, Ann Arbor, MI, USA.
- Center of Excellence for Cancer Immunology and Immunotherapy, Rogel Cancer Center, University of Michigan School of Medicine, Ann Arbor, MI, USA.
- Graduate Programs in Immunology, University of Michigan School of Medicine, Ann Arbor, MI, USA.
- Tumor Biology, University of Michigan School of Medicine, Ann Arbor, MI, USA.
- Department of Pathology, University of Michigan School of Medicine, Ann Arbor, MI, USA.
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3
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Vogt A, Sadeghlar F, Ayub TH, Schneider C, Möhring C, Zhou T, Mahn R, Bartels A, Praktiknjo M, Kornek MT, Toma M, Schmidt-Wolf IGH, Branchi V, Matthaei H, Kalff JC, Strassburg CP, Gonzalez-Carmona MA. Alpha-Fetoprotein- and CD40Ligand-Expressing Dendritic Cells for Immunotherapy of Hepatocellular Carcinoma. Cancers (Basel) 2021; 13:cancers13133375. [PMID: 34282787 PMCID: PMC8269346 DOI: 10.3390/cancers13133375] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/28/2021] [Accepted: 06/29/2021] [Indexed: 12/12/2022] Open
Abstract
Simple Summary In first clinical trials, vaccinations against tumor-associated antigens (TAA), such as Alpha-Fetoprotein (AFP) using antigen presenting cells, such as dendritic cells (DC), failed to achieve effective immune responses towards hepatocellular carcinoma (HCC). CD40Ligand is a potent immune checkpoint, which can increase the antitumoral immune response of DC. In this study, a subcutaneous vaccination with DCs, which were transduced with AFP-coding adenoviruses and an intratumoral treatment with DCs, which were transduced with CD40L-coding adenoviruses, induced an antitumoral immune response and led to complete remissions and long-term survival in 62% of mice with established HCC. Combined strategy causes rapid and profound changes in the tumor environment with enhanced Th1-cytokine expression, strong tumor infiltration of cytotoxic T lymphocytes and DC, and higher tumor apoptosis, leading to effective tumor regression of HCC. Thus, intratumoral CD40L co-stimulation represents a promising tool for improving tumor-antigen DC-based immunotherapy of HCC. Abstract Dendritic cells (DC) as professional antigen presenting cells are able to prime T-cells against the tumor-associated antigen α-fetoprotein (AFP) for immunotherapy of hepatocellular carcinoma (HCC). However, a strong immunosuppressive tumor environment limits their efficacy in patients. The co-stimulation with CD40Ligand (CD40L) is critical in the maturation of DC and T-cell priming. In this study, the impact of intratumoral (i.t.) CD40L-expressing DC to improve vaccination with murine (m)AFP-transduced DC (Ad-mAFP-DC) was analyzed in subcutaneous (s.c.) and orthotopic murine HCC. Murine DC were adenovirally transduced with Ad-mAFP or Ad-CD40L. Hepa129-mAFP-cells were injected into the right flank or the liver of C3H-mice to induce subcutaneous (s.c.) and orthotopic HCC. For treatments, 106 Ad-mAFP-transduced DC were inoculated s.c. followed by 106 CD40L-expressing DC injected intratumorally (i.t.). S.c. inoculation with Ad-mAFP-transduced DC, as vaccine, induced a delay of tumor-growth of AFP-positive HCC compared to controls. When s.c.-inoculation of Ad-mAFP-DC was combined with i.t.-application of Ad-CD40L-DC synergistic antitumoral effects were observed and complete remissions and long-term survival in 62% of tumor-bearing animals were achieved. Analysis of the tumor environment at different time points revealed that s.c.-vaccination with Ad-mAFP-DC seems to stimulate tumor-specific effector cells, allowing an earlier recruitment of effector T-cells and a Th1 shift within the tumors. After i.t. co-stimulation with Ad-CD40L-DC, production of Th1-cytokines was strongly increased and accompanied by a robust tumor infiltration of mature DC, activated CD4+-, CD8+-T-cells as well as reduction of regulatory T-cells. Moreover, Ad-CD40L-DC induced tumor cell apoptosis. Intratumoral co-stimulation with CD40L-expressing DC significantly improves vaccination with Ad-mAFP-DC in pre-established HCC in vivo. Combined therapy caused an early and strong Th1-shift in the tumor environment as well as higher tumor apoptosis, leading to synergistic tumor regression of HCC. Thus, CD40L co-stimulation represents a promising tool for improving DC-based immunotherapy of HCC.
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Affiliation(s)
- Annabelle Vogt
- Department of Internal Medicine I, University Hospital of Bonn, 53127 Bonn, Germany; (A.V.); (F.S.); (T.H.A.); (C.S.); (C.M.); (T.Z.); (R.M.); (A.B.); (M.P.); (M.T.K.); (C.P.S.)
| | - Farsaneh Sadeghlar
- Department of Internal Medicine I, University Hospital of Bonn, 53127 Bonn, Germany; (A.V.); (F.S.); (T.H.A.); (C.S.); (C.M.); (T.Z.); (R.M.); (A.B.); (M.P.); (M.T.K.); (C.P.S.)
| | - Tiyasha H. Ayub
- Department of Internal Medicine I, University Hospital of Bonn, 53127 Bonn, Germany; (A.V.); (F.S.); (T.H.A.); (C.S.); (C.M.); (T.Z.); (R.M.); (A.B.); (M.P.); (M.T.K.); (C.P.S.)
| | - Carlo Schneider
- Department of Internal Medicine I, University Hospital of Bonn, 53127 Bonn, Germany; (A.V.); (F.S.); (T.H.A.); (C.S.); (C.M.); (T.Z.); (R.M.); (A.B.); (M.P.); (M.T.K.); (C.P.S.)
| | - Christian Möhring
- Department of Internal Medicine I, University Hospital of Bonn, 53127 Bonn, Germany; (A.V.); (F.S.); (T.H.A.); (C.S.); (C.M.); (T.Z.); (R.M.); (A.B.); (M.P.); (M.T.K.); (C.P.S.)
| | - Taotao Zhou
- Department of Internal Medicine I, University Hospital of Bonn, 53127 Bonn, Germany; (A.V.); (F.S.); (T.H.A.); (C.S.); (C.M.); (T.Z.); (R.M.); (A.B.); (M.P.); (M.T.K.); (C.P.S.)
| | - Robert Mahn
- Department of Internal Medicine I, University Hospital of Bonn, 53127 Bonn, Germany; (A.V.); (F.S.); (T.H.A.); (C.S.); (C.M.); (T.Z.); (R.M.); (A.B.); (M.P.); (M.T.K.); (C.P.S.)
| | - Alexandra Bartels
- Department of Internal Medicine I, University Hospital of Bonn, 53127 Bonn, Germany; (A.V.); (F.S.); (T.H.A.); (C.S.); (C.M.); (T.Z.); (R.M.); (A.B.); (M.P.); (M.T.K.); (C.P.S.)
| | - Michael Praktiknjo
- Department of Internal Medicine I, University Hospital of Bonn, 53127 Bonn, Germany; (A.V.); (F.S.); (T.H.A.); (C.S.); (C.M.); (T.Z.); (R.M.); (A.B.); (M.P.); (M.T.K.); (C.P.S.)
| | - Miroslaw T. Kornek
- Department of Internal Medicine I, University Hospital of Bonn, 53127 Bonn, Germany; (A.V.); (F.S.); (T.H.A.); (C.S.); (C.M.); (T.Z.); (R.M.); (A.B.); (M.P.); (M.T.K.); (C.P.S.)
| | - Marieta Toma
- Department of Pathology, University Hospital of Bonn, 53127 Bonn, Germany;
| | | | - Vittorio Branchi
- Department of Visceral Surgery, University Hospital of Bonn, 53127 Bonn, Germany; (V.B.); (H.M.); (J.C.K.)
| | - Hanno Matthaei
- Department of Visceral Surgery, University Hospital of Bonn, 53127 Bonn, Germany; (V.B.); (H.M.); (J.C.K.)
| | - Jörg C. Kalff
- Department of Visceral Surgery, University Hospital of Bonn, 53127 Bonn, Germany; (V.B.); (H.M.); (J.C.K.)
| | - Christian P. Strassburg
- Department of Internal Medicine I, University Hospital of Bonn, 53127 Bonn, Germany; (A.V.); (F.S.); (T.H.A.); (C.S.); (C.M.); (T.Z.); (R.M.); (A.B.); (M.P.); (M.T.K.); (C.P.S.)
| | - Maria A. Gonzalez-Carmona
- Department of Internal Medicine I, University Hospital of Bonn, 53127 Bonn, Germany; (A.V.); (F.S.); (T.H.A.); (C.S.); (C.M.); (T.Z.); (R.M.); (A.B.); (M.P.); (M.T.K.); (C.P.S.)
- Correspondence: ; Tel.: +49-228-287-17017
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Inhibition of PI3K Isoform p110γ Increases Both Anti-Tumor and Immunosuppressive Responses to Aggressive Murine Head and Neck Squamous Cell Carcinoma with Low Immunogenicity. Cancers (Basel) 2021; 13:cancers13050953. [PMID: 33668795 PMCID: PMC7956466 DOI: 10.3390/cancers13050953] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 02/19/2021] [Accepted: 02/22/2021] [Indexed: 02/08/2023] Open
Abstract
Simple Summary Poorly immunogenic head and neck squamous carcinomas (HNSCC) remain difficult to treat due to poor response rates to immunotherapy. Inhibition of the PI3K catalytic subunit p110γ, which is expressed in leukocytes and some HNSCCs, has shown promise in treating HNSCC; with clinical trials underway to gauge its effectiveness. However, the effect of PI3K p110γ inhibition on the host immune system in poorly immunogenic HNSCC has not been fully described. In this study, our group characterized the immune response to poorly immunogenic HNSCC in the absence of PI3K p110γ using an orthotopic mouse model with the MOC2 cell line. We found that mice lacking p110γ did not demonstrate significantly different tumor growth or metastasis, though we observed substantial elevation in both anti-tumor and immunosuppressive activity at the primary tumor site. Our results indicate that PI3K p110γ inhibition may potentially enhance anti-tumor immunity against poorly immunogenic HNSCC if administered with checkpoint inhibitors. Abstract HNSCC is the sixth most common cancer, with around 650,000 new cases yearly. Gain of function mutations in the PI3K pathway are common in HNSCC, and inhibition of the PI3K p110γ subunit has shown promise in HNSCC treatment. However, given that PI3K p110γ plays an important role in myeloid and lymphoid immune cell function, it is essential to understand how PI3K p110γ inhibition affects the anti-tumor immune response independent of tumor cells. To elucidate PI3K p110γ function in HNSCC, we employed an orthotopic mouse model using poorly immunogenic and aggressive cell line MOC2 on Pik3cg−/− mice. We observed that wild-type and Pik3cg−/− mice displayed similar rates of HNSCC tumor growth and metastasis after 20 days following tumor injection. T-cell infiltration and intrinsic T-cell responses to MOC2 oral tumors were comparable between wild-type and Pik3cg−/− mice. Interestingly, the immune response of tumor-bearing Pik3cg−/− mice was marked by increased anti-tumor cytotoxic molecules (IFN-γ, IL-17)) by T-cells and immune checkpoint marker (PD-L1, PD-1) expression by myeloid cells and T-cells compared to tumor-bearing wild-type mice. Taken together, our findings demonstrate that inhibition of PI3K p110γ modulates tumor-associated immune cells, which likely potentiates HNSCC treatment when used in combination with selective checkpoint inhibitors.
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Bommireddy R, Munoz LE, Kumari A, Huang L, Fan Y, Monterroza L, Pack CD, Ramachandiran S, Reddy SJ, Kim J, Chen ZG, Saba NF, Shin DM, Selvaraj P. Tumor Membrane Vesicle Vaccine Augments the Efficacy of Anti-PD1 Antibody in Immune Checkpoint Inhibitor-Resistant Squamous Cell Carcinoma Models of Head and Neck Cancer. Vaccines (Basel) 2020; 8:vaccines8020182. [PMID: 32295135 PMCID: PMC7348725 DOI: 10.3390/vaccines8020182] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 04/08/2020] [Accepted: 04/10/2020] [Indexed: 12/30/2022] Open
Abstract
Immune checkpoint inhibitor (ICI) immunotherapy improved the survival of head and neck squamous cell carcinoma (HNSCC) patients. However, more than 80% of the patients are still resistant to this therapy. To test whether the efficacy of ICI therapy can be improved by vaccine-induced immunity, we investigated the efficacy of a tumor membrane-based vaccine immunotherapy in murine models of HNSCC. The tumors, grown subcutaneously, are used to prepare tumor membrane vesicles (TMVs). TMVs are then incorporated with glycolipid-anchored immunostimulatory molecules GPI-B7-1 and GPI-IL-12 by protein transfer to generate the TMV vaccine. This TMV vaccine inhibited tumor growth and improved the survival of mice challenged with SCCVII tumor cells. The tumor-free mice survived for several months, remained tumor-free, and were protected following a secondary tumor cell challenge, suggesting that the TMV vaccine induced an anti-tumor immune memory response. However, no synergy with anti-PD1 mAb was observed in this model. In contrast, the TMV vaccine was effective in inhibiting MOC1 and MOC2 murine oral cancer models and synergized with anti-PD1 mAb in extending the survival of tumor-bearing mice. These observations suggest that tumor tissue based TMV vaccines can be harnessed to develop an effective personalized immunotherapy for HNSCC that can enhance the efficacy of immune checkpoint inhibitors.
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Affiliation(s)
- Ramireddy Bommireddy
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA; (R.B.); (L.E.M.); (A.K.); (L.H.); (Y.F.); (L.M.); (J.K.)
| | - Luis E. Munoz
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA; (R.B.); (L.E.M.); (A.K.); (L.H.); (Y.F.); (L.M.); (J.K.)
| | - Anita Kumari
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA; (R.B.); (L.E.M.); (A.K.); (L.H.); (Y.F.); (L.M.); (J.K.)
| | - Lei Huang
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA; (R.B.); (L.E.M.); (A.K.); (L.H.); (Y.F.); (L.M.); (J.K.)
| | - Yijian Fan
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA; (R.B.); (L.E.M.); (A.K.); (L.H.); (Y.F.); (L.M.); (J.K.)
| | - Lenore Monterroza
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA; (R.B.); (L.E.M.); (A.K.); (L.H.); (Y.F.); (L.M.); (J.K.)
| | - Christopher D. Pack
- Metaclipse Therapeutics Corporation, Atlanta, GA 30340, USA; (C.D.P.); (S.R.); (S.J.C.R.)
| | - Sampath Ramachandiran
- Metaclipse Therapeutics Corporation, Atlanta, GA 30340, USA; (C.D.P.); (S.R.); (S.J.C.R.)
| | - Shaker J.C. Reddy
- Metaclipse Therapeutics Corporation, Atlanta, GA 30340, USA; (C.D.P.); (S.R.); (S.J.C.R.)
| | - Janet Kim
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA; (R.B.); (L.E.M.); (A.K.); (L.H.); (Y.F.); (L.M.); (J.K.)
| | - Zhuo G. Chen
- Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA 30322, USA; (Z.G.C.); (N.F.S.)
| | - Nabil F. Saba
- Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA 30322, USA; (Z.G.C.); (N.F.S.)
| | - Dong M. Shin
- Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA 30322, USA; (Z.G.C.); (N.F.S.)
- Correspondence: (D.M.S.); (P.S.); Tel.: +404-778-5990 (D.M.S.); +404-727-5929 (P.S.); Fax: +404-727-5764 (P.S.)
| | - Periasamy Selvaraj
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA; (R.B.); (L.E.M.); (A.K.); (L.H.); (Y.F.); (L.M.); (J.K.)
- Correspondence: (D.M.S.); (P.S.); Tel.: +404-778-5990 (D.M.S.); +404-727-5929 (P.S.); Fax: +404-727-5764 (P.S.)
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Li J, Zeng M, Yan K, Yang Y, Li H, Xu X. IL-17 promotes hepatocellular carcinoma through inhibiting apoptosis induced by IFN-γ. Biochem Biophys Res Commun 2020; 522:525-531. [DOI: 10.1016/j.bbrc.2019.11.134] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 11/20/2019] [Indexed: 02/06/2023]
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7
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Castro F, Cardoso AP, Gonçalves RM, Serre K, Oliveira MJ. Interferon-Gamma at the Crossroads of Tumor Immune Surveillance or Evasion. Front Immunol 2018; 9:847. [PMID: 29780381 PMCID: PMC5945880 DOI: 10.3389/fimmu.2018.00847] [Citation(s) in RCA: 722] [Impact Index Per Article: 120.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 04/05/2018] [Indexed: 12/15/2022] Open
Abstract
Interferon-gamma (IFN-γ) is a pleiotropic molecule with associated antiproliferative, pro-apoptotic and antitumor mechanisms. This effector cytokine, often considered as a major effector of immunity, has been used in the treatment of several diseases, despite its adverse effects. Although broad evidence implicating IFN-γ in tumor immune surveillance, IFN-γ-based therapies undergoing clinical trials have been of limited success. In fact, recent reports suggested that it may also play a protumorigenic role, namely, through IFN-γ signaling insensitivity, downregulation of major histocompatibility complexes, and upregulation of indoleamine 2,3-dioxygenase and of checkpoint inhibitors, as programmed cell-death ligand 1. However, the IFN-γ-mediated responses are still positively associated with patient's survival in several cancers. Consequently, major research efforts are required to understand the immune contexture in which IFN-γ induces its intricate and highly regulated effects in the tumor microenvironment. This review discusses the current knowledge on the pro- and antitumorigenic effects of IFN-γ as part of the complex immune response to cancer, highlighting the relevance to identify IFN-γ responsive patients for the improvement of therapies that exploit associated signaling pathways.
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Affiliation(s)
- Flávia Castro
- i3S – Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- INEB – Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
- ICBAS – Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Ana Patrícia Cardoso
- i3S – Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- INEB – Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
| | - Raquel Madeira Gonçalves
- i3S – Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- INEB – Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
- ICBAS – Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Karine Serre
- IMM – Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Maria José Oliveira
- i3S – Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- INEB – Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
- Departamento de Patologia e Oncologia, Faculdade de Medicina, Universidade do Porto, Porto, Portugal
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Tsukahara T, Nakamura SI, Romero-Pèrez GA, Ohwaki M, Yanagisawa T, Kan T. Stimulation of murine cell-mediated immunity by dietary administration of a cell preparation of Enterococcus faecalis strain KH-2 and its possible activity against tumour development in mice. BIOSCIENCE OF MICROBIOTA FOOD AND HEALTH 2018; 37:49-57. [PMID: 30094120 PMCID: PMC6081610 DOI: 10.12938/bmfh.17-021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 03/09/2018] [Indexed: 01/09/2023]
Abstract
It is well known that dietary lactic acid bacteria (LAB) stimulate cell-mediated immunity such as natural killer (NK) activity in mice. Here, we aimed to assay the immunomodulatory effects of a cell preparation of Enterococcus faecalis strain KH-2 (CPEF). We further evaluated the possibility of antitumour activity caused by CPEF administration, because NK cells actively participate in the prevention of tumour formation. NK cell activity and gene expression of IFN-γ and Perforin 1, which were induced most likely by a synergetic action of their cytotoxic activity, were higher in splenocytes of CPEF-administered mice than they were in control mice. Moreover, unlike those of control mice, the splenocytes of CPEF-administered mice had significantly higher CD28+CD69+/CD4+ and CD28+CD69+/CD8+ ratios that resulted in a survival rate with a tendency toward improvement after 47 days of CPEF administration (p=0.1) in Meth-A fibrosarcoma-bearing mice. In conclusion, we showed that CPEF might be effective in treating Meth-A fibrosarcoma in mice, as it helped increase their survival rate via stimulation of an immune response in splenocytes, which involved systemic cellular immunity processes such as cytotoxic activity, and active T cells.
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Affiliation(s)
- Takamitsu Tsukahara
- Kyoto Institute of Nutrition and Pathology, 7-2 Furuikedani, Ujitawara-cho, Tsuzuki-gun, Kyoto 610-0231, Japan
| | - Shin-Ichi Nakamura
- Kyoto Institute of Nutrition and Pathology, 7-2 Furuikedani, Ujitawara-cho, Tsuzuki-gun, Kyoto 610-0231, Japan
| | - Gustavo A Romero-Pèrez
- Kyoto Institute of Nutrition and Pathology, 7-2 Furuikedani, Ujitawara-cho, Tsuzuki-gun, Kyoto 610-0231, Japan
| | - Makoto Ohwaki
- Non-Profit Organisation, The Japanese Association of Clinical Research on Supplements, 1-9-24 Shihogi, Hidaka-shi, Saitama 350-1248, Japan
| | - Takaharu Yanagisawa
- Broma Laboratory Ltd., 1-26 Kandasuda-cho, Chiyoda-ku, Tokyo 101-0041, Japan
| | - Tatsuhiko Kan
- Bio-Lab Co., Ltd., 2-1-3 Komagawa, Hidaka-shi, Saitama 350-1249, Japan
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9
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Dias LP, Luzo ÂCM, Volpe BB, Durán M, Galdames SEM, Ferreira LAB, Durán N, Fávaro WJ. Effects of intravesical therapy with platelet-rich plasma (PRP) and Bacillus Calmette-Guérin (BCG) in non-muscle invasive bladder cancer. Tissue Cell 2018; 52:17-27. [PMID: 29857824 DOI: 10.1016/j.tice.2018.03.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 03/21/2018] [Accepted: 03/22/2018] [Indexed: 12/19/2022]
Abstract
This study describes the effects of a promising therapeutic alternative for non-muscle invasive bladder cancer (NMIBC) based on Bacillus Calmette-Guerin (BCG) intravesical immunotherapy combined with Platelet-rich plasma (PRP) in an animal model. Furthermore, this study describes the possible mechanisms of this therapeutic combination involving Toll-like Receptors (TLRs) 2 and 4 signaling pathways. NMIBC was induced by treating female Fischer 344 rats with N-methyl-N-nitrosourea (MNU). After treatment with MNU, the animals were distributed into four experimental groups: Control (without MNU) group, MNU (cancer) group, MNU + PRP group, MNU + BCG group and MNU + PRP + BCG group. Our results demonstrated that PRP treatment alone or associated with BCG triggered significant cytotoxicity in bladder carcinoma cells (HTB-9). Animals treated with PRP associated to BCG clearly showed better histopathological recovery from the cancer state and decrease of urothelial neoplastic lesions progression in 70% of animals when compared to groups that received the same therapies administered singly. In addition, this therapeutic association led to distinct activation of immune system TLRs 2 and 4-mediated, resulting in increased MyD88, TRIF, IRF3, IFN-γ immunoreactivities. Taken together, the data obtained suggest that interferon signaling pathway activation by PRP treatment in combination with BCG immunotherapy may provide novel therapeutic approaches for non-muscle invasive bladder cancer.
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Affiliation(s)
- Lara Paro Dias
- Laboratory of Urogenital Carcinogenesis and Immunotherapy, Department of Structural and Functional Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Ângela C Malheiros Luzo
- Public Umbilical Cord Blood Bank, Haematology Hemotherapy Center/INCT do Sangue, University of Campinas (UNICAMP), Campinas, Brazil
| | - Bruno B Volpe
- Public Umbilical Cord Blood Bank, Haematology Hemotherapy Center/INCT do Sangue, University of Campinas (UNICAMP), Campinas, Brazil
| | - Marcela Durán
- Laboratory of Urogenital Carcinogenesis and Immunotherapy, Department of Structural and Functional Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Sofia E M Galdames
- Department of Engineering of Materials and Bioprocesses, School of Chemical Engineering, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Luiz A B Ferreira
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Nelson Durán
- NanoBioss, Institute of Chemistry, University of Campinas (UNICAMP), Campinas, SP, Brazil; Nanomedicine Research Unit (Nanomed), Federal University of ABC (UFABC), Santo André, Brazil
| | - Wagner J Fávaro
- Laboratory of Urogenital Carcinogenesis and Immunotherapy, Department of Structural and Functional Biology, University of Campinas (UNICAMP), Campinas, SP, Brazil; NanoBioss, Institute of Chemistry, University of Campinas (UNICAMP), Campinas, SP, Brazil.
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Yin L, Fang Z, Shen NJ, Qiu YH, Li AJ, Zhang YJ. Downregulation of A20 increases the cytotoxicity of IFN-γ in hepatocellular carcinoma cells. DRUG DESIGN DEVELOPMENT AND THERAPY 2017; 11:2841-2850. [PMID: 29033545 PMCID: PMC5628674 DOI: 10.2147/dddt.s135993] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Hepatocellular carcinoma (HCC) is a highly fatal disease mandating development of novel, effective therapeutic strategy. Interferon-gamma (IFN-γ) is a pleiotropic cytokine with immunomodulatory, antiviral, and antitumor effects. Although IFN-γ is a promising antitumor agent, its application is limited by resistance in tumor cells. A20 is a zinc-finger protein that was initially identified as a gene product induced by tumor necrosis factor α in human umbilical vein endothelial cells. In this study, we found that silencing of A20 combined with IFN-γ significantly represses cell viability, and induces apoptosis and cell-cycle arrest in HCC cells. By investigating mechanisms implicated in A20 and IFN-γ-mediated signaling pathways, we revealed that the phosphoinositide 3-kinase/Akt signaling pathway and antiapoptotic B-cell lymphoma 2 proteins were repressed. Moreover, we also found that phosphorylation of STAT1 and STAT3 was significantly enhanced after the downregulation of A20 in combination with treatment of IFN-γ. Inhibitor of STAT1 but not STAT3 could block the antitumor effect of IFN-γ. Therefore, targeting A20 enhances the cytotoxicity of IFN-γ against HCC cells and may present a promising therapeutic strategy for HCC.
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Affiliation(s)
- Lei Yin
- The Second Department of Biliary Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Zheng Fang
- The Second Department of Biliary Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Ning-Jia Shen
- The Second Department of Biliary Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Ying-He Qiu
- The Second Department of Biliary Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Ai-Jun Li
- The Second Department of Biliary Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Yong-Jie Zhang
- The Second Department of Biliary Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
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11
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Yang SX, Wei WS, Ouyan QW, Jiang QH, Zou YF, Qu W, Tu JH, Zhou ZB, Ding HL, Xie CW, Lei QM, Zhong CR. Interleukin-12 activated CD8 + T cells induces apoptosis in breast cancer cells and reduces tumor growth. Biomed Pharmacother 2016; 84:1466-1471. [PMID: 27810342 DOI: 10.1016/j.biopha.2016.10.046] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Revised: 09/29/2016] [Accepted: 10/17/2016] [Indexed: 12/22/2022] Open
Abstract
During the past two decades, cytokines have emerged as key molecules to modulate innate and adaptive immunity and mediate anti-tumor activity. Although multiple cytokine types are implicated for such anti-tumor activity in several cancer types, it remains largely unknown in breast cancer. In this study, cytokines that are prior known for antitumor activity in different cancer types were examined against breast cancer using a 4T1 cells based xenograft-model. Our results showed Interleukin-12 (IL-12) (500ng/mouse) significantly suppressed the growth of tumors, while other cytokines showed minimal suppression. Subsequent molecular analysis by flow cytometry and immunohistochemistry confirmed the CD8+ cells infiltration and Interferon-γ (IFN-γ) production by them in tumor environment. In addition, we observed that IFN-γ production by activated CD8+ cells directly induced apoptosis in tumor cells, which together indicate that IL-12 causes CD8+ cells to infiltrate and secrete IFN-γ in tumor environment, which induce apoptosis in them and causes tumor growth suppression. Furthermore, we showed that lower dosage of IL-12 and chemotherapy drug tamoxifen combinations enhanced the tumor suppression as opposed to single treatments, and thereby propose an alternate option for high dosage associated effects for both drug and cytokine treatments.
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Affiliation(s)
- Shi-Xin Yang
- Department of Galactophore, The Third Hospital of Nanchang, Breast Hospital of Jiangxi, 330009, China.
| | - Wen-Song Wei
- Department of Galactophore, The Third Hospital of Nanchang, Breast Hospital of Jiangxi, 330009, China
| | - Qian-Wen Ouyan
- Department of Galactophore, The Third Hospital of Nanchang, Breast Hospital of Jiangxi, 330009, China
| | - Qi-Hua Jiang
- Department of Galactophore, The Third Hospital of Nanchang, Breast Hospital of Jiangxi, 330009, China
| | - Yu-Feng Zou
- Department of Galactophore, The Third Hospital of Nanchang, Breast Hospital of Jiangxi, 330009, China
| | - Wei Qu
- Department of Galactophore, The Third Hospital of Nanchang, Breast Hospital of Jiangxi, 330009, China
| | - Jian-Hong Tu
- Department of Galactophore, The Third Hospital of Nanchang, Breast Hospital of Jiangxi, 330009, China
| | - Zhi-Bing Zhou
- Department of Galactophore, The Third Hospital of Nanchang, Breast Hospital of Jiangxi, 330009, China
| | - Hao-Long Ding
- Department of Galactophore, The Third Hospital of Nanchang, Breast Hospital of Jiangxi, 330009, China
| | - Chun-Wei Xie
- Department of Galactophore, The Third Hospital of Nanchang, Breast Hospital of Jiangxi, 330009, China
| | - Qiu-Mo Lei
- Department of Galactophore, The Third Hospital of Nanchang, Breast Hospital of Jiangxi, 330009, China
| | - Cheng-Ren Zhong
- Department of Galactophore, The Third Hospital of Nanchang, Breast Hospital of Jiangxi, 330009, China
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12
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Yue T, Zheng X, Dou Y, Zheng X, Sun R, Tian Z, Wei H. Interleukin 12 shows a better curative effect on lung cancer than paclitaxel and cisplatin doublet chemotherapy. BMC Cancer 2016; 16:665. [PMID: 27549240 PMCID: PMC4994391 DOI: 10.1186/s12885-016-2701-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 08/10/2016] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Interleukin 12 (IL-12) is a cytokine that has been reported to exhibit potent tumoricidal effects in animal tumor models. A combined approach using Paclitaxel and platinum-based doublet chemotherapy is the most commonly used backbone regimen for treating lung cancer. Despite numerous studies regarding the anti-tumor effects of IL-12 and the widespread use of conventional chemotherapy, few direct comparisons of IL-12 and conventional chemotherapy in the treatment of lung cancer have been performed. METHODS We compared IL-12 to paclitaxel and cisplatin doublet chemotherapy in terms of efficacy against lung cancer in mouse models. The antitumor effect was measured by survival assays, histological analyses and imaging analyses. The cytokine levels were assessed using enzyme linked immunosorbent assay (ELISA) and flow cytometry (FACS). The spleen sizes were measured. CD31, CD105 and Vascular endothelial growth factor receptor 3 (VEGFR3) were analyzed using immunofluorescence. Matrix metalloprotein-9 (MMP-9) and cadherin 1 (CDH1) transcript levels were measured by quantitative PCR. Tumor cells apoptosis were examined by Tunel assay. RESULTS The results showed that IL-12 treatment inhibited lung tumor growth, resulting in the long-term survival of lung cancer-bearing mice. Further examination revealed that IL-12 rapidly activated NK cells to secrete IFN-γ, resulting in the inhibition of tumor angiogenesis. In contrast, paclitaxel and cisplatin doublet chemotherapy did not show the expected efficacy in orthotopic lung cancer models; the IFN-γ levels were not increased after this treatment, and the number of peripheral lymphocytes was reduced. CONCLUSION Together, these animal model data indicate that IL-12 shows a better curative effect than PTX + CDDP doublet chemotherapy.
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Affiliation(s)
- Ting Yue
- Institute of Immunology, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China.,Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui, China
| | - Xiaodong Zheng
- Institute of Immunology, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China.,Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui, China
| | - Yaling Dou
- Institute of Immunology, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China.,Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui, China
| | - Xiaohu Zheng
- Institute of Immunology, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China.,Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui, China
| | - Rui Sun
- Institute of Immunology, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China.,Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui, China
| | - Zhigang Tian
- Institute of Immunology, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China. .,Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui, China.
| | - Haiming Wei
- Institute of Immunology, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China. .,Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui, China.
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13
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Patel P, Schutzer SE, Pyrsopoulos N. Immunobiology of hepatocarcinogenesis: Ways to go or almost there? World J Gastrointest Pathophysiol 2016; 7:242-255. [PMID: 27574562 PMCID: PMC4981764 DOI: 10.4291/wjgp.v7.i3.242] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 07/01/2016] [Accepted: 07/22/2016] [Indexed: 02/06/2023] Open
Abstract
Hepatocellular carcinoma is on the rise and occurs in the setting of chronic liver disease and cirrhosis. Though treatment modalities are available, mortality from this cancer remains high. Medical therapy with the utilization of biologic compounds such as the Food and Drug Administration approved sorafenib might be the only option that can increase survival. Immunotherapy, with modern pharmacologic developments, is a new frontier in cancer therapy and therefore the immunobiology of hepatocarcinogenesis is under investigation. This review will discuss current concepts of immunobiology in hepatocarcinogenesis along with current treatment modalities employing immunotherapy. The tumor microenvironment along with a variety of immune cells coexists and interplays to lead to tumorigenesis. Tumor infiltrating lymphocytes including CD8+ T cells, CD4+ T cells along with regulatory T cells, tumor associated macrophages, tumor associated neutrophils, myeloid derived suppressor cells, and natural killer cells interact to actively provide anti-tumor or pro-tumor effects. Furthermore, oncogenic pathways such as Raf/mitogen-activated protein kinase/extracellular-signal-regulated kinase pathway, phosphatidyl-3-kinase/AKT/mammalian target or rapamycin, Wnt/β-catenin, nuclear factor-κB and signal transducers and activators of transcription 3 may lead to activation and proliferation of tumor cells and are also considered cornerstones in tumorigenesis. Immunotherapy directed at this complex milieu of cells has been showned to be successful in cancer treatment. The use of vaccines, adoptive cell therapy and immune checkpoint inhibitor modulation are current options for therapy. Further translational research will shed light to concepts such as anti-tumor immunity which can add another alternative in the therapeutic armamentarium.
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14
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Garcia PV, Seiva FRF, Carniato AP, de Mello Júnior W, Duran N, Macedo AM, de Oliveira AG, Romih R, Nunes IDS, Nunes ODS, Fávaro WJ. Increased toll-like receptors and p53 levels regulate apoptosis and angiogenesis in non-muscle invasive bladder cancer: mechanism of action of P-MAPA biological response modifier. BMC Cancer 2016; 16:422. [PMID: 27389279 PMCID: PMC4937612 DOI: 10.1186/s12885-016-2474-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 06/30/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The new modalities for treating patients with non-muscle invasive bladder cancer (NMIBC) for whom BCG (Bacillus Calmette-Guerin) has failed or is contraindicated are recently increasing due to the development of new drugs. Although agents like mitomycin C and BCG are routinely used, there is a need for more potent and/or less-toxic agents. In this scenario, a new perspective is represented by P-MAPA (Protein Aggregate Magnesium-Ammonium Phospholinoleate-Palmitoleate Anhydride), developed by Farmabrasilis (non-profit research network). This study detailed and characterized the mechanisms of action of P-MAPA based on activation of mediators of Toll-like Receptors (TLRs) 2 and 4 signaling pathways and p53 in regulating angiogenesis and apoptosis in an animal model of NMIBC, as well as, compared these mechanisms with BCG treatment. RESULTS Our results demonstrated the activation of the immune system by BCG (MyD88-dependent pathway) resulted in increased inflammatory cytokines. However, P-MAPA intravesical immunotherapy led to distinct activation of TLRs 2 and 4-mediated innate immune system, resulting in increased interferons signaling pathway (TRIF-dependent pathway), which was more effective in the NMIBC treatment. Interferon signaling pathway activation induced by P-MAPA led to increase of iNOS protein levels, resulting in apoptosis and histopathological recovery. Additionally, P-MAPA immunotherapy increased wild-type p53 protein levels. The increased wild-type p53 protein levels were fundamental to NO-induced apoptosis and the up-regulation of BAX. Furthermore, interferon signaling pathway induction and increased p53 protein levels by P-MAPA led to important antitumor effects, not only suppressing abnormal cell proliferation, but also by preventing continuous expansion of tumor mass through suppression of angiogenesis, which was characterized by decreased VEGF and increased endostatin protein levels. CONCLUSIONS Thus, P-MAPA immunotherapy could be considered an important therapeutic strategy for NMIBC, as well as, opens a new perspective for treatment of patients that are refractory or resistant to BCG intravesical therapy.
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Affiliation(s)
- Patrick Vianna Garcia
- />Laboratory of Urogenital Carcinogenesis and Immunotherapy, Department of Structural and Functional Biology, University of Campinas (UNICAMP), P.O. BOX 6109, zip code 13083-865 Campinas, São Paulo Brazil
| | | | - Amanda Pocol Carniato
- />Laboratory of Urogenital Carcinogenesis and Immunotherapy, Department of Structural and Functional Biology, University of Campinas (UNICAMP), P.O. BOX 6109, zip code 13083-865 Campinas, São Paulo Brazil
| | - Wilson de Mello Júnior
- />Department of Anatomy, Institute of Biosciences, UNESP - Univ Estadual Paulista, Botucatu, SP Brazil
| | - Nelson Duran
- />Farmabrasilis R&D Division, Campinas, SP Brazil
- />NanoBioss, Institute of Chemistry, University of Campinas (UNICAMP), Campinas, SP Brazil
| | | | - Alexandre Gabarra de Oliveira
- />Department of Internal Medicine, University of Campinas (UNICAMP), Campinas, SP Brazil
- />Department of Physical Education, São Paulo State University (UNESP), Rio Claro, SP Brazil
| | - Rok Romih
- />Institute of Cell Biology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | | | | | - Wagner José Fávaro
- />Laboratory of Urogenital Carcinogenesis and Immunotherapy, Department of Structural and Functional Biology, University of Campinas (UNICAMP), P.O. BOX 6109, zip code 13083-865 Campinas, São Paulo Brazil
- />Farmabrasilis R&D Division, Campinas, SP Brazil
- />NanoBioss, Institute of Chemistry, University of Campinas (UNICAMP), Campinas, SP Brazil
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15
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Yeung BHY, Shek FH, Lee NP, Wong CKC. Stanniocalcin-1 Reduces Tumor Size in Human Hepatocellular Carcinoma. PLoS One 2015; 10:e0139977. [PMID: 26469082 PMCID: PMC4607425 DOI: 10.1371/journal.pone.0139977] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Accepted: 09/18/2015] [Indexed: 02/07/2023] Open
Abstract
Growing evidence has revealed high expression levels of stanniocalcin-1 (STC1) in different types of human cancers. Numerous experimental studies using cancer cell lines demonstrated the involvement of STC1 in inflammatory and apoptotic processes; however the role of STC1 in carcinogenesis remains elusive. Hepatocellular carcinoma (HCC) an exemplified model of inflammation-related cancer, represents a paradigm of studying the association between STC1 and tumor development. Therefore, we conducted a statistical analysis on the expression levels of STC1 using clinicopathological data from 216 HCC patients. We found that STC1 was upregulated in the tumor tissues and its expression levels was positively correlated with the levels of interleukin (IL)-6 and IL-8. Intriguingly tumors with greater expression levels of STC1 (tumor/normal ≥ 2) were significantly smaller than the lower level (tumor/normal<2) samples (p = 0.008). A pharmacological approach was implemented to reveal the functional correlation between STC1 and the ILs in the HCC cell-lines. IL-6 and IL-8 treatment of Hep3B cells induced STC1 expression. Lentiviral-based STC1 overexpression in Hep3B and MHCC-97L cells however showed inhibitory action on the pro-migratory effects of IL-6 and IL-8 and reduced size of tumor spheroids. The inhibitory effect of STC1 on tumor growth was confirmed in vivo using the stable STC1-overexpressing 97L cells on a mouse xenograft model. Genetic analysis of the xenografts derived from the STC1-overexpressing 97L cells, showed upregulation of the pro-apoptotic genes interleukin-12 and NOD-like receptor family, pyrin domain-containing 3. Collectively, the anti-inflammatory and pro-apoptotic functions of STC1 were suggested to relate its inhibitory effect on the growth of HCC cells. This study supports the notion that STC1 may be a potential therapeutic target for inflammatory tumors in HCC patients.
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Affiliation(s)
- Bonnie H. Y. Yeung
- Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong
| | - Felix H. Shek
- Department of Surgery, The University of Hong Kong, Pokfulam, Hong Kong
| | - Nikki P. Lee
- Department of Surgery, The University of Hong Kong, Pokfulam, Hong Kong
| | - Chris K. C. Wong
- Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong
- * E-mail:
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16
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Staphylococcal enterotoxin B/texosomes as a candidate for breast cancer immunotherapy. Tumour Biol 2015; 37:739-48. [DOI: 10.1007/s13277-015-3877-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Accepted: 07/30/2015] [Indexed: 10/23/2022] Open
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17
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Sarhan D, Palma M, Mao Y, Adamson L, Kiessling R, Mellstedt H, Österborg A, Lundqvist A. Dendritic cell regulation of NK-cell responses involves lymphotoxin-α, IL-12, and TGF-β. Eur J Immunol 2015; 45:1783-93. [DOI: 10.1002/eji.201444885] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 02/16/2015] [Accepted: 03/10/2015] [Indexed: 12/30/2022]
Affiliation(s)
- Dhifaf Sarhan
- Department of Oncology-Pathology; Karolinska Institutet; Stockholm Sweden
| | - Marzia Palma
- Department of Oncology-Pathology; Karolinska Institutet; Stockholm Sweden
- Hematology Center; Karolinska University Hospital Solna; Stockholm Sweden
| | - Yumeng Mao
- Department of Oncology-Pathology; Karolinska Institutet; Stockholm Sweden
| | - Lars Adamson
- Department of Oncology-Pathology; Karolinska Institutet; Stockholm Sweden
| | - Rolf Kiessling
- Department of Oncology-Pathology; Karolinska Institutet; Stockholm Sweden
| | - Håkan Mellstedt
- Department of Oncology-Pathology; Karolinska Institutet; Stockholm Sweden
| | - Anders Österborg
- Department of Oncology-Pathology; Karolinska Institutet; Stockholm Sweden
- Hematology Center; Karolinska University Hospital Solna; Stockholm Sweden
| | - Andreas Lundqvist
- Department of Oncology-Pathology; Karolinska Institutet; Stockholm Sweden
- Center for the Diseases of Aging at the Vaccine and Gene Therapy; Institute of Florida; Port St. Lucie FL USA
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18
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Peng Q, Li S, Lao X, Chen Z, Li R, Qin X. Interleukin-12B+1188A/C polymorphism contributes to increased hepatocellular carcinoma susceptibility: evidence from a meta-analysis. Clin Res Hepatol Gastroenterol 2014; 38:735-43. [PMID: 25445750 DOI: 10.1016/j.clinre.2014.09.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2014] [Revised: 08/30/2014] [Accepted: 09/08/2014] [Indexed: 02/04/2023]
Abstract
BACKGROUND Interleukin-12 (IL-12) is a multifunctional cytokine that induces interferon (IFN)-γ secretion and plays an important role in antitumor immunity. The IL-12B +1188A/C polymorphism was found to correlate with a decreased cytokine production and/or activity, which may lead to increased susceptibility to cancers including hepatocellular carcinoma (HCC). Previous epidemiological studies investigating the association between IL-12B +1188A/C polymorphism and HCC risk reported inconsistent results. We performed a meta-analysis to derive a precise estimation of the association. METHODS All studies published up to July 2014 on the association between IL-12B +1188A/C polymorphism and HCC risk were identified by searching electronic databases including PubMed, Embase, Cochrane library, and Chinese Biomedical Literature database (CBM). Data were extracted by two independent authors and the odds ratios (ORs) together with corresponding 95% confidence intervals (CIs) were used to assess the association between IL-12B +1188A/C polymorphism and HCC risk. RESULTS Five studies with 1864 cases and 2077 controls were included in the meta-analysis. We observed that the IL-12B +1188A/C polymorphism was significantly correlated with increased HCC risk when all studies were pooled into the meta-analysis (CC vs. AA: OR=1.306, 95% CI 1.063-1.606, P=0.011; AC vs. AA: OR=1.193, 95% CI 1.014-1.405, P=0.034; CC+AC vs. AA: OR=1.260, 95% CI 1.098-1.445, P=0.001). In subgroup analyses by ethnicity, source of control, and study quality, significant increased HCC risk was found in Asians, hospital-based studies, and high quality studies. CONCLUSIONS The present meta-analysis suggests that the IL-12B+1188A/C polymorphism is a low-penetrant risk factor for HCC development, especially among Asians. Further large and well-designed studies are needed to confirm this association.
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Affiliation(s)
- Qiliu Peng
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Shan Li
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Xianjun Lao
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Zhiping Chen
- Department of Occupational Health and Environmental Health, School of Public Health at Guangxi Medical University, Nanning, Guangxi, China
| | - Ruolin Li
- Department of Medicine Research, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Xue Qin
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China.
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Gabeen AA, Abdel-Hamid FF, El-Houseini ME, Fathy SAH. Potential immunotherapeutic role of interleukin-2 and interleukin-12 combination in patients with hepatocellular carcinoma. J Hepatocell Carcinoma 2014; 1:55-63. [PMID: 27508176 PMCID: PMC4918270 DOI: 10.2147/jhc.s56012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background Many recent therapeutic interventions are necessary to improve the treatment of hepatocellular carcinoma (HCC), including immunotherapy, which seems to offer one of the new realistic therapeutic modalities. This study aims to investigate the optimization of immunotherapy for HCC patients by appraisal of both interferon (IFN)-γ levels and phenotyping of lymphocytes obtained from peripheral blood and fine-needle aspirates. Methods The isolated lymphocytes were cultured in the presence of interleukins (IL)-2, IL-4, and IL-12. Enzyme-linked immunosorbent assay and flow cytometric techniques were used for the assessment of human IFN-γ production and the studied T-cell subpopulations, respectively. Results Mixed cell populations of peripheral blood lymphocytes and tumor infiltrating lymphocytes treated with IL-2 plus IL-12 showed a marked and significant elevation in IFN-γ levels in their culture media, a significant decrease in the percentage of cluster of differentiation (CD)4+CD25+ regulatory T-cells, and a nonsignificant increase in the percentage of CD8+ cytotoxic T-cells. Meanwhile, IL-2 plus IL-4 treatment demonstrated nonsignificant effects. Conclusion Our data suggested that IL-12 together with IL-2 caused a suppression of CD4+CD25+ regulatory T-cells and an elevation of IFN-γ levels, which play a crucial immunotherapeutic role in the management of HCC patients.
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20
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Denies S, Cicchelero L, Van Audenhove I, Sanders NN. Combination of interleukin-12 gene therapy, metronomic cyclophosphamide and DNA cancer vaccination directs all arms of the immune system towards tumor eradication. J Control Release 2014; 187:175-82. [PMID: 24887014 DOI: 10.1016/j.jconrel.2014.05.045] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 05/15/2014] [Accepted: 05/23/2014] [Indexed: 11/29/2022]
Abstract
In this work a combination therapy that acts upon the immune suppressive, the innate and specific arms of the immune system is proposed. This combination therapy, which consists of intratumoral interleukin-12 (IL-12) gene therapy, human tyrosinase (hTyr) DNA vaccination and metronomic cyclophosphamide (CPX), was evaluated in a B16-F10 mouse model. The following groups were compared: (1) no treatment, (2) control vector, (3) intratumoral IL-12 gene therapy, (4) intratumoral IL-12 gene therapy+metronomic CPX, (5) intratumoral IL-12 gene therapy+metronomic CPX+hTyr DNA vaccination. Next to clinical efficacy and safety, we characterized acute effects of IL-12 and anti-tumor immune response after a second tumor challenge. All treatment groups showed increased survival and higher cure rates than control groups. Survival of non-cured mice was increased when metronomic CPX was combined with IL-12 gene therapy. Furthermore, mice that received metronomic CPX had significantly lower percentages of regulatory T cells. Addition of the hTyr DNA vaccine increased cure rate and resulted in increased survival compared to other treatment groups. We also demonstrated that the manifest necrosis within days after IL-12 gene therapy is at least partly due to IL-12 mediated activation of NK cells. All cured mice were resistant to a second challenge. A humoral memory response against the tumor cells was observed in all groups that received IL-12 gene therapy, while a cellular memory response was observed only in the vaccinated mice. In conclusion, every component of this combination treatment contributed a unique immunologic trait with associated clinical benefits.
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Affiliation(s)
- Sofie Denies
- Laboratory of Gene Therapy, Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, Heidestraat 19, B-9820 Merelbeke, Belgium
| | - Laetitia Cicchelero
- Laboratory of Gene Therapy, Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, Heidestraat 19, B-9820 Merelbeke, Belgium
| | - Isabel Van Audenhove
- Department of Biochemistry, Faculty of Medicine and Health Sciences, Ghent University, Albert Baertsoenkaai 3, B-9000 Gent, Belgium
| | - Niek N Sanders
- Laboratory of Gene Therapy, Department of Nutrition, Genetics and Ethology, Faculty of Veterinary Medicine, Ghent University, Heidestraat 19, B-9820 Merelbeke, Belgium.
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21
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Zhao BG, Vasilakos JP, Tross D, Smirnov D, Klinman DM. Combination therapy targeting toll like receptors 7, 8 and 9 eliminates large established tumors. J Immunother Cancer 2014; 2:12. [PMID: 24982761 PMCID: PMC4075973 DOI: 10.1186/2051-1426-2-12] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Accepted: 04/01/2014] [Indexed: 12/14/2022] Open
Abstract
Background The TLR7/8 agonist 3M-052 and the TLR9 agonist CpG ODN both trigger innate immune responses that support the induction of tumor-specific immunity. Previous studies showed that these agonists used individually could improve the survival of mice challenged with small tumors but were of limited therapeutic benefit against large/advanced tumors. Methods Normal mice were challenged with syngeneic tumors. Once these tumors reached clinically detectable size (500–800 mm3) they were treated by intra-tumoral injection with 3M-052 and/or CpG ODN. Anti-tumor immunity and tumor growth were evaluated. Results The co-delivery of agonists targeting TLRs 7, 8 and 9 increased the number and tumoricidal activity of tumor infiltrating CTL and NK cells while reducing the frequency of immunosuppressive MDSC. The combination of 3M-052 plus CpG ODN (but not each agent alone) eradicated large primary tumors and established long-term protective immunity. Conclusion The combination of agonists targeting TLRs 7/8 and 9 represents a significant improvement in cancer immunotherapy.
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Affiliation(s)
- By Gan Zhao
- Cancer and Inflammation Program, National Cancer Institute, NIH, Frederick MD 21702, USA
| | | | - Debra Tross
- Cancer and Inflammation Program, National Cancer Institute, NIH, Frederick MD 21702, USA
| | - Dmitri Smirnov
- 3M Drug Delivery Systems Division, St. Paul MN 55144, USA
| | - Dennis M Klinman
- Cancer and Inflammation Program, National Cancer Institute, NIH, Frederick MD 21702, USA
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Badr MM, Qinna NA, Qadan F, Matalka KZ. Dichloroacetate modulates cytokines toward T helper 1 function via induction of the interleukin-12-interferon-γ pathway. Onco Targets Ther 2014; 7:193-201. [PMID: 24532971 PMCID: PMC3923616 DOI: 10.2147/ott.s56688] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Dichloroacetate (DCA) is one of the new, promising anticancer drugs. DCA restores normal mitochondrial function and enables cancer cells to undergo apoptosis. In addition, DCA was found to modulate certain signaling pathways involving some transcription factors. The latter encouraged us to study DCA immunomodulatory activity on cytokines and their association with increasing DCA cancer cell cytotoxicity. METHODS AND RESULTS Cell viability assay was used to determine the effect of different concentrations of DCA on the survival of 3-methylcholanthrene (MCA) fibrosarcoma cell line. DCA decreased the percent survival of MCA fibrosarcoma in a dose-dependent manner (P<0.01). Furthermore, this percent survival was further reduced when MCA fibrosarcoma cells were cocultured with mouse splenocytes. The latter was observed at 10 mM DCA (P<0.01), and the inhibitory concentration at 50% dropped from 23 mM to 15.6 mM DCA (P<0.05). In addition, DCA significantly enhanced interferon (IFN)-γ but not interleukin (IL)-17 production levels in unstimulated and stimulated mouse spleen cells. To investigate the mechanism of DCA on IFN-γ production, DCA cytokine modulatory effect was tested on unstimulated macrophages, T-cells, and natural killer cells. DCA significantly increased IL-12 production from macrophages but did not modulate the production of IFN-γ from either T-cells or natural killer cells. Moreover, the DCA-enhancing effect on IFN-γ production was reversed by anti-IL-12 antibody. Also, the DCA cytokine modulatory effect was tested in vivo after inducing mouse skin inflammation using phorbol 12-myristate 13-acetate (PMA). DCA restored PMA-lowered IFN-γ and IL-12 levels and normalized PMA-increased transforming growth factor-β level, but it inhibited IL-10 levels even further (P<0.05). CONCLUSION DCA has immunomodulatory activity, mainly via activation of the IL-12-IFN-γ pathway and is able to modulate cytokines toward T helper 1 lymphocyte function. These DCA immunomodulatory effects are promising and further investigations are required to develop protocols for its use in cancer treatment.
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Affiliation(s)
- Mujtaba M Badr
- Department of Pharmacology and Biomedical Sciences, Faculty of Pharmacy and Medical Sciences, University of Petra, Amman, Jordan ; Petra University Pharmaceutical Center, University of Petra, Amman, Jordan
| | - Nidal A Qinna
- Department of Pharmacology and Biomedical Sciences, Faculty of Pharmacy and Medical Sciences, University of Petra, Amman, Jordan ; Petra University Pharmaceutical Center, University of Petra, Amman, Jordan
| | - Fadi Qadan
- Petra University Pharmaceutical Center, University of Petra, Amman, Jordan
| | - Khalid Z Matalka
- Department of Pharmacology and Biomedical Sciences, Faculty of Pharmacy and Medical Sciences, University of Petra, Amman, Jordan ; Petra University Pharmaceutical Center, University of Petra, Amman, Jordan
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Reactive oxygen species activate NFκB (p65) and p53 and induce apoptosis in RVFV infected liver cells. Virology 2014; 449:270-86. [DOI: 10.1016/j.virol.2013.11.023] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 08/02/2013] [Accepted: 11/17/2013] [Indexed: 12/30/2022]
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24
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Messina NL, Banks KM, Vidacs E, Martin BP, Long F, Christiansen AJ, Smyth MJ, Clarke CJP, Johnstone RW. Modulation of antitumour immune responses by intratumoural
Stat1
expression. Immunol Cell Biol 2013; 91:556-67. [DOI: 10.1038/icb.2013.41] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 07/12/2013] [Accepted: 07/12/2013] [Indexed: 01/09/2023]
Affiliation(s)
- Nicole L Messina
- Cancer Therapeutics Program, Peter MacCallum Cancer CentreEast MelbourneVictoriaAustralia
- Deptartment of Pathology, University of MelbourneParkvilleVictoriaAustralia
| | - Kellie M Banks
- Cancer Therapeutics Program, Peter MacCallum Cancer CentreEast MelbourneVictoriaAustralia
| | - Eva Vidacs
- Cancer Therapeutics Program, Peter MacCallum Cancer CentreEast MelbourneVictoriaAustralia
| | - Ben P Martin
- Cancer Therapeutics Program, Peter MacCallum Cancer CentreEast MelbourneVictoriaAustralia
| | - Fennella Long
- Cancer Therapeutics Program, Peter MacCallum Cancer CentreEast MelbourneVictoriaAustralia
| | - Ailsa J Christiansen
- Institute of Pharmaceutical Science, Swiss Federal Institute of Technology (ETHZ)ZurichSwitzerland
| | - Mark J Smyth
- Immunology in Cancer and Infection Laboratory, Queensland Institute of Medical ResearchHerstonQueenslandAustralia
- School of Medicine, University of QueenslandHerstonQueenslandAustralia
| | - Christopher J P Clarke
- Cancer Therapeutics Program, Peter MacCallum Cancer CentreEast MelbourneVictoriaAustralia
- Deptartment of Pathology, University of MelbourneParkvilleVictoriaAustralia
| | - Ricky W Johnstone
- Cancer Therapeutics Program, Peter MacCallum Cancer CentreEast MelbourneVictoriaAustralia
- Sir Peter MacCallum Department of Oncology, University of MelbourneParkvilleVictoriaAustralia
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25
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Deletion of IFNγ enhances hepatocarcinogenesis in FXR knockout mice. J Hepatol 2012; 57:1004-12. [PMID: 22728874 PMCID: PMC3477276 DOI: 10.1016/j.jhep.2012.06.016] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Revised: 06/07/2012] [Accepted: 06/12/2012] [Indexed: 12/31/2022]
Abstract
BACKGROUND & AIMS Liver tumor, especially hepatocellular carcinoma (HCC), is closely associated with chronic inflammation. We previously showed that farnesoid X receptor knockout (FXR(-)(/)(-)) mice displayed chronic inflammation and developed spontaneous liver tumors when they aged. However, the mechanism by which inflammation leads to HCC in the absence of FXR is unclear. Because IFNγ is one of the most upregulated pro-inflammatory cytokines in FXR(-)(/)(-) livers, we generated IFNγ(-)(/)(-)FXR(-)(/)(-) double knockout mice to determine IFNγ's roles in hepatocarcinogenesis. METHODS IFNγ(-)(/)(-) mice were crossed with an FXR(-)(/)(-) C57BL/6 background or injected i.p. with the hepatocarcinogen diethylnitrosamine (DEN). Hepatocarcinogenesis was analyzed with biochemical and histological methods. RESULTS IFNγ deletion accelerated spontaneous hepatocarcinogenesis in FXR(-)(/)(-) mice and increased the susceptibility to DEN-induced hepatocarcinogenesis. IFNγ deletion enhanced activation of HCC promoters STAT3 and JNK/c-Jun, but abolished induction of p53 in IFNγ(-)(/)(-) livers after acute DEN-induced injury. Furthermore, hepatic p53 expression increased in aged wild type mice but not in aged IFNγ(-)(/)(-) and IFNγ(-)(/)(-)FXR(-)(/)(-) mice, while activation of STAT3 and JNK/c-Jun was enhanced in aged IFNγ(-)(/)(-) and IFNγ(-)(/)(-)FXR(-)(/)(-) mice. In addition, IFNγ inhibited liver cancer xenograft growth and impaired IL-6-induced STAT3 phosphorylation by inducing SOCS1/3 expression. CONCLUSIONS Increased IFNγ expression in FXR(-)(/)(-) livers represents a protective response of the liver against chronic injury and tumorigenesis. IFNγ suppresses hepatocarcinogenesis by inducing p53 expression and preventing STAT3 activation.
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Callegari E, Elamin BK, Giannone F, Milazzo M, Altavilla G, Fornari F, Giacomelli L, D'Abundo L, Ferracin M, Bassi C, Zagatti B, Corrà F, Miotto E, Lupini L, Bolondi L, Gramantieri L, Croce CM, Sabbioni S, Negrini M. Liver tumorigenicity promoted by microRNA-221 in a mouse transgenic model. Hepatology 2012; 56:1025-33. [PMID: 22473819 DOI: 10.1002/hep.25747] [Citation(s) in RCA: 134] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2011] [Accepted: 03/21/2012] [Indexed: 12/12/2022]
Abstract
UNLABELLED MicroRNA-221 (miR-221) is one of the most frequently and consistently up-regulated microRNAs (miRNAs) in human cancer. It has been hypothesized that miR-221 may act as a tumor promoter. To demonstrate this, we developed a transgenic (TG) mouse model that exhibits an inappropriate overexpression of miR-221 in the liver. Immunoblotting and immunostaining confirmed a concomitant down-regulation of miR-221 target proteins. This TG model is characterized by the emergence of spontaneous nodular liver lesions in approximately 50% of male mice and by a strong acceleration of tumor development in 100% of mice treated with diethylnitrosamine. Similarly to human hepatocellular carcinoma, tumors are characterized by a further increase in miR-221 expression and a concomitant inhibition of its target protein-coding genes (i.e., cyclin-dependent kinase inhibitor [Cdkn]1b/p27, Cdkn1c/p57, and B-cell lymphoma 2-modifying factor). To validate the tumor-promoting effect of miR-221, we showed that in vivo delivery of anti-miR-221 oligonucleotides leads to a significant reduction of the number and size of tumor nodules. CONCLUSIONS This study not only establishes that miR-221 can promote liver tumorigenicity, but it also establishes a valuable animal model to perform preclinical investigations for the use of anti-miRNA approaches aimed at liver cancer therapy.
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Affiliation(s)
- Elisa Callegari
- Dipartimento di Medicina Sperimentale e Diagnostica, Università di Ferrara, Ferrara, Italy
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Alshaker HA, Matalka KZ. IFN-γ, IL-17 and TGF-β involvement in shaping the tumor microenvironment: The significance of modulating such cytokines in treating malignant solid tumors. Cancer Cell Int 2011; 11:33. [PMID: 21943203 PMCID: PMC3195702 DOI: 10.1186/1475-2867-11-33] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2011] [Accepted: 09/23/2011] [Indexed: 01/21/2023] Open
Abstract
Multiple innate and adaptive immune effector cells and molecules partake in the recognition and destruction of cancer cells to protect against growing tumors, a concept that is known as cancer immunosurveillance. Unfortunately, cancer cells are capable of avoiding this process by immunoselection of poorly immunogenic tumor cells variants along with subversion of the immune system and thus shaping both the tumor and its microenvironment. Cytokines represent part of the complex pattern of the immune response which can assist the development of cancer as well as to eliminate it. Simultaneously, a large number of cytokines may be involved in the complex interactions between host and tumor cells where this dynamic cross-talk, between tumors and the immune system, can either regulate tumor growth or tumor growth, invasion and metastasis take place. In this review, we are stressing on the interface between infiltrated immune cells and tumor cells with the emphasis on the bidirectional activities of specific cytokines: IFN-γ, TGF-β and IL-17 within the tumor microenvironment and their role in shaping it. In addition, the significance of modulating such cytokines in favor of anti-tumor response is discussed and merits the use of mixture of targeted modulators to overcome the network complexity of cytokines in the tumor microenvironment.
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Affiliation(s)
- Heba A Alshaker
- Department of Pharmacology and Biomedical Sciences, Faculty of Pharmacy and Medical Sciences, Petra University, Amman, Jordan.
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28
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Flecken T, Spangenberg HC, Thimme R. Immunobiology of hepatocellular carcinoma. Langenbecks Arch Surg 2011; 397:673-80. [PMID: 21479622 DOI: 10.1007/s00423-011-0783-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2011] [Accepted: 03/08/2011] [Indexed: 12/22/2022]
Abstract
INTRODUCTION Hepatocellular carcinoma (HCC) is a tumor of increasing incidence and high mortality worldwide. Diagnosis of HCC is often difficult, especially at early stages of disease. Additionally, current treatment options are limited. HCC usually develops in an environment of chronic liver disease. The immune system has an important role in shaping this environment, especially in chronic viral hepatitis, the leading cause of HCC. However, the immune system also plays a role in natural immunity against HCC although this is apparently not sufficient to control the majority of tumors. This failure in tumor control is due to multiple immunomodulatory mechanisms employed by HCC to subvert the immune system. In this review, we will summarize the current knowledge about the role of the immune system in hepatocarcinogenesis. Additionally, we will describe the mechanisms used by the immune system to control established lesions and the reasons why these immune responses apparently fail so often. Finally, possible implications for the design of novel immunotherapeutic strategies will be discussed.
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Affiliation(s)
- Tobias Flecken
- Department of Internal Medicine II, University Hospital Freiburg, Hugstetter Straße 55, 79106 Freiburg, Germany
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29
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Horras CJ, Lamb CL, Mitchell KA. Regulation of hepatocyte fate by interferon-γ. Cytokine Growth Factor Rev 2011; 22:35-43. [PMID: 21334249 DOI: 10.1016/j.cytogfr.2011.01.001] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2010] [Revised: 12/17/2010] [Accepted: 01/06/2011] [Indexed: 12/15/2022]
Abstract
Interferon (IFN)-γ is a cytokine known for its immunomodulatory and anti-proliferative action. In the liver, IFN-γ can induce hepatocyte apoptosis or inhibit hepatocyte cell cycle progression. This article reviews recent mechanistic reports that describe how IFN-γ may direct the fate of hepatocytes either towards apoptosis or a cell cycle arrest. This review also describes a probable role for IFN-γ in modulating hepatocyte fate during liver regeneration, transplantation, hepatitis, fibrosis and hepatocellular carcinoma, and highlights promising areas of research that may lead to the development of IFN-γ as a therapy to enhance recovery from liver disease.
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Affiliation(s)
- Christopher J Horras
- Department of Biological Sciences, Boise State University, 1910 University Drive, Boise, ID 83725-1515, United States
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30
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Liu L, Xu Y, Liu Z, Chen J, Zhang Y, Zhu J, Liu J, Liu S, Ji G, Shi H, Shen H, Hu Z. IL12 polymorphisms, HBV infection and risk of hepatocellular carcinoma in a high-risk Chinese population. Int J Cancer 2010; 128:1692-6. [PMID: 20521253 DOI: 10.1002/ijc.25488] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2010] [Accepted: 05/27/2010] [Indexed: 12/13/2022]
Abstract
To investigate the association between the potentially functional polymorphisms in IL12A and IL12B, HBV infection and risk of hepatocellular carcinoma in a Chinese population, we genotyped three polymorphisms, rs568408 (3'UTR G>A), rs2243115 (5'UTR T>G) in IL12A and rs3212227 (3'UTR A>C) in IL12B in a case-control study of 869 hepatocellular carcinoma (HCC) cases and 891 cancer-free controls. We found that the IL12A rs568408 GA/AA variant genotypes were associated with a significantly increased risk of HCC (adjusted odds ratio (OR) = 1.53, 95% confidence interval (CI) = 1.17-2.00), compared with the wild-type GG homozygote. In the stratified analyses, the increased risk of HCC associated with rs568408 GA/AA was more evident in patients who were negative for HBsAg (adjusted OR = 1.71, 95% CI = 1.23-2.39). However, no significant associations between IL12A rs2243115 T/G, IL12B rs3212227 A/C and risk of HCC were observed. Our findings indicate that IL12A rs568408 may contribute to the risk of HCC and modify HCC risk associated with HBV infection.
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Affiliation(s)
- Li Liu
- Department of Epidemiology and Biostatistics, Cancer Center, Nanjing Medical University, Nanjing, China
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Uemura A, Takehara T, Miyagi T, Suzuki T, Tatsumi T, Ohkawa K, Kanto T, Hiramatsu N, Hayashi N. Natural killer cell is a major producer of interferon gamma that is critical for the IL-12-induced anti-tumor effect in mice. Cancer Immunol Immunother 2010; 59:453-63. [PMID: 19756594 PMCID: PMC11030467 DOI: 10.1007/s00262-009-0764-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2009] [Accepted: 08/24/2009] [Indexed: 10/20/2022]
Abstract
Although the anti-tumor effect of IL-12 is mediated mostly by IFNgamma, which cell types most efficiently produce IFNgamma and therefore initiate or promote the anti-tumor effect of IL-12 has not been clearly determined. In the present study, we demonstrated hydrodynamic injection of the IL-12 gene led to prolonged IFNgamma production, NK-cell activation and complete inhibition of liver metastasis of CT-26 colon cancer cells in wild-type mice, but not in IFNgamma knockout mice. NK cells expressed higher levels of STAT4 and upon IL-12 administration displayed stronger STAT4 phosphorylation and IFNgamma production than non-NK cells. Adoptive transfer of wild-type NK cells into IFNgamma knockout mice restored IL-12-induced IFNgamma production, NK-cell activation and anti-tumor effect, whereas transfer of the same number of wild-type non-NK cells did not. In conclusion, NK cells are predominant producers of IFNgamma that is critical for IL-12 anti-tumor therapy.
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Affiliation(s)
- Akio Uemura
- Department of Gastroenterology and Hepatology, Osaka University Graduate School of Medicine, Yamada-oka, Suita, Japan.
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Diaz Y, Gonzalez A, Lopez A, Perez R, Vazquez AM, Montero E. Anti-ganglioside anti-idiotypic monoclonal antibody-based cancer vaccine induces apoptosis and antiangiogenic effect in a metastatic lung carcinoma. Cancer Immunol Immunother 2009; 58:1117-28. [PMID: 19066887 PMCID: PMC11030083 DOI: 10.1007/s00262-008-0634-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2008] [Accepted: 11/17/2008] [Indexed: 10/21/2022]
Abstract
Anti-idiotype monoclonal antibody (mAb) 1E10 was generated by immunizing BALB/c mice with an Ab1 mAb which recognizes NeuGc-containing gangliosides, sulfatides and some tumor antigens. 1E10 mAb induces therapeutic effects in a primary breast carcinoma and a melanoma model. However, the tumor immunity mechanisms have not been elucidated. Here we show that aluminum hydroxide-precipitated 1E10 mAb immunization induced anti-metastatic effect in the 3LL-D122 Lewis Lung carcinoma, a poorly immunogenic and highly metastatic model in C57BL/6 mice. The therapeutic effect was associated to the increment of T cells infiltrating metastases, the reduction of new blood vessels formation and the increase of apoptotic tumor cells in lung nodules. Interestingly, active immunization does not induce measurable antibodies to the 1E10 mAb, the NeuGc-GM3 or tumor cells, which may suggest a different mechanism which has to be elucidated. These findings may support the relevance of this target for cancer biotherapy.
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Affiliation(s)
- Y. Diaz
- Experimental Immunotherapy Department, Center of Molecular Immunology, P.O. Box 16040, Havana, 11600 Cuba
| | - A. Gonzalez
- Experimental Immunotherapy Department, Center of Molecular Immunology, P.O. Box 16040, Havana, 11600 Cuba
| | - A. Lopez
- Experimental Immunotherapy Department, Center of Molecular Immunology, P.O. Box 16040, Havana, 11600 Cuba
| | - R. Perez
- Research and Development, Center of Molecular Immunology, Havana, Cuba
| | - A. M. Vazquez
- Antibody Engineering Department, Center of Molecular Immunology, P.O. Box 16040, Havana, 11600 Cuba
| | - E. Montero
- Experimental Immunotherapy Department, Center of Molecular Immunology, P.O. Box 16040, Havana, 11600 Cuba
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Homma S, Koido S, Sagawa Y, Suzuki H, Komita H, Nagasaki E, Takahara A, Horiguchi-Yamada J, Tajiri H, Zeldin DC, Obata T. Antigenic stimulation with cytochrome P450 2J expressed in mouse hepatocellular carcinoma cells regulates host anti-tumour immunity. Clin Exp Immunol 2009; 156:344-52. [PMID: 19302243 DOI: 10.1111/j.1365-2249.2009.03900.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Cytochrome P450 2J subfamily (CYP2J) enzymes expressed in mouse hepatocellular carcinoma (HCC) cells were identified as an antigen recognized by specific CD4(+) T cells and the structure of its T cell epitope was determined by proteomics-based exploration. The major histocompatibility complex (MHC) class II binding peptides were isolated from I-A(k)/peptide complex of dendritic cells (DCs) loaded or unloaded with MIH-2 mouse HCC cells. MHC class II-binding peptides found in MIH-2-loaded DCs but not in unloaded DCs were determined by tandem mass spectrometric analysis. The peptide, consisting of amino acid 276-290 (DFIDAFLKEMTKYPE) of mouse CYP2J enzymes, was identified as an antigenic peptide presented in the context of MHC class II. Preventive treatment of mice with CYP2J peptide stimulated interferon (IFN)-gamma production of splenocytes and suppressed the growth of implanted CYP2J-positive MIH-2 cells but not CYP2J-negative murine bladder tumour cells. However, continuous treatment of MIH-2-bearing mice with CYP2J peptide significantly suppressed IFN-gamma production of splenocytes and accelerated the growth of implanted MIH-2 tumours in vivo. Increased frequencies of CD4(+)forkhead box P3 regulatory T cells and CD11b(+)Gr-1(+) myeloid suppressor cells were observed in splenocytes from the continuously immunized mice. These results indicate that antigenecity of CYP2J isoforms expressed in HCC cells activate host anti-tumour immunity at an initial stage of HCC, but suppress host anti-tumour immunity with excessive antigenic stimulation at an advanced stage.
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Affiliation(s)
- S Homma
- Departments of Oncology, Institute of DNA Medicine, Jekei University School of Medicine, Tokyo, Japan.
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Increased immunostimulatory activity conferred to antigen-presenting cells by exposure to antigen extract from hepatocellular carcinoma after radiofrequency thermal ablation. J Immunother 2008; 31:271-82. [PMID: 18317360 DOI: 10.1097/cji.0b013e318160ff1c] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Radiofrequency thermal ablation represents an effective treatment for hepatocellular carcinoma (HCC) and it can also exert an "adjuvant" effect on spontaneous antitumor T-cell responses, as suggested by human and animal studies. The adjuvant effect is thought to depend on the huge amount of necrotic tumor antigen made available to the immune system by HCC thermal ablation. In addition, radiofrequency thermal ablation may result in the release of local stimuli responsible for activation and maturation of antigen-presenting cells (APCs). To test this hypothesis, we studied APC maturation and function in 19 patients undergoing thermal ablation for HCC. Patients' monocytes induced to differentiate with granulocyte macrophage colony-stimulating factor (GM-CSF), or GM-CSF plus IL-4, were cocultured in vitro with tumor debris generated by radiofrequency thermal ablation. Expression of costimulatory molecules, lymphnode homing chemokine receptor, antigen presentation, and cytokine secretion were enhanced by incubation with HCC treated tissue as compared with untreated HCC and nontumor liver tissue. Moreover, HCC-specific T-cell responses could be induced by monocytes activated with GM-CSF and incubated with thermally ablated HCC tissue. HCC thermal ablation can create an antigenic source along with stimuli appropriate for maturation of APCs to induce HCC-specific T-cell responses. These results contribute to explain at least in part the adjuvant effect of HCC thermal ablation and suggest a novel strategy to induce maturation of APCs and their loading with HCC antigens for active immunotherapy protocols aimed at reducing HCC recurrence after thermal ablation.
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Guo X, Stroup SE, Houpt ER. Persistence of Entamoeba histolytica infection in CBA mice owes to intestinal IL-4 production and inhibition of protective IFN-gamma. Mucosal Immunol 2008; 1:139-46. [PMID: 19079171 DOI: 10.1038/mi.2007.18] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The mechanisms whereby certain mouse strains develop persistent intestinal infection with Entamoeba histolytica remain unclear. In this work, we characterized the kinetic pattern of cytokine responses during the course of natural infection in CBA mice and showed that intracecal amebic infection led to a rapid and sustained upregulation of Th2 (IL-4, IL-5, IL-13) and Th17 cytokine responses while Th1 cytokines, IL-12p35 and interferon (IFN)-gamma, were suppressed. Depletion of IL-4 cleared infection by 14 days post-challenge, and this clearance correlated with and was mediated by IFN-gamma. The protective role for IFN-gamma was not strain-specific, as 129 background IFN-gammaR knockout mice exhibited a higher infection rate than their wild-type littermates. These studies indicate that IL-4 plays a critical pathogenic role in the persistence of E. histolytica infection through suppression of protective IFN-gamma and provide a possible explanation for why certain humans spontaneously clear amebiasis while others progress to invasive disease.
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Affiliation(s)
- X Guo
- Department of Medicine, Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, Virginia, USA
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Rogers AB, Theve EJ, Feng Y, Fry RC, Taghizadeh K, Clapp KM, Boussahmain C, Cormier KS, Fox JG. Hepatocellular carcinoma associated with liver-gender disruption in male mice. Cancer Res 2007; 67:11536-46. [PMID: 18089782 DOI: 10.1158/0008-5472.can-07-1479] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Hepatocellular carcinoma (HCC) is a male-predominant cancer associated with chronic hepatitis. Like human viral hepatitis, murine Helicobacter hepaticus infection produces inflammation and HCC with a masculine bias. We used this model to identify potential mechanisms of male HCC predisposition. Male weanling A/JCr mice (n = 67) were gavaged with H. hepaticus or vehicle. At 1 year, mice were distributed into four groups: surgical castration, chemical castration, castration followed by dihydrotestosterone supplementation, or sexually intact controls. Responses to infection were compared with IFN-gamma challenge alone. At 21 months, there was no significant difference in hepatitis between groups. Neither castration nor androgen receptor agonism altered tumor incidence. Infected mice with severe, but not mild, disease exhibited a mosaic of alterations to sexually dimorphic genes and microsomal long-chain fatty acids. By microarray, tumorigenic hepatitis was strongly associated with liver-gender disruption, defined as the loss of a gender-identifying hepatic molecular signature. IFN-gamma alone produced similar changes, demonstrating a role for proinflammatory cytokines in this process. In conclusion, hepatocarcinogenesis in male mice with chronic hepatitis is maturationally imprinted and androgen-independent. Proinflammatory cytokines may promote HCC in a male-predominant fashion due to high sensitivity of the masculinized liver to loss of sex-specific transcriptional balance. Liver-gender disruption has pleiotropic implications for hepatic enzyme activity, lipid processing, nuclear receptor activation, apoptosis, and proliferation. We propose a multistep model linking chronic hepatitis to liver cancer through cytokine-mediated derangement of gender-specific cellular metabolism. This model introduces a novel mechanism of inflammation-associated carcinogenesis consistent with male-predominant HCC risk.
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Affiliation(s)
- Arlin B Rogers
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
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37
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Kim JO, Jung SS, Kim SY, Kim TY, Shin DW, Lee JH, Lee YH. Inhibition of Lewis lung carcinoma growth by Toxoplasma gondii through induction of Th1 immune responses and inhibition of angiogenesis. J Korean Med Sci 2007; 22 Suppl:S38-46. [PMID: 17923753 PMCID: PMC2694397 DOI: 10.3346/jkms.2007.22.s.s38] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Toxoplasma gondii is an obligate intracellular protozoan parasite that induces antitumor activity against certain types of cancers. However, little information is available regarding the immunologic mechanisms that regulate these effects. For this purpose, C57BL/6 mice were administered either the T. gondii Me49 strain orally or Lewis lung carcinoma (LLC) cells intramuscularly. Survival rates, tumor size, histopathology, and immune responses were determined for each group, and angiogenesis was evaluated by in vivo Matrigel plug assay. Toxoplasma-infected (TG-injected) mice survived the entire experimental period, whereas cancer cell-bearing (LLC-injected) mice died within six weeks. Mice injected with both T. gondii and cancer cells (TG/LLC-injected group) showed significantly increased survival rates, CD8+ T-cell percentages, IFN-gamma mRNA expression levels, serum IgG2a titers, and CTL responses as compared to the LLC-injected mice. In addition, angiogenesis in the TG/LLC-injected mice was notably inhibited. These effects in TG/LCC-injected mice were similar or were increased by the addition of an adjuvant, Quil-A. However, TG/LLC-injected mice showed decreased percentages of CD4+ and CD8+ T cells, IFN-gamma mRNA expression levels, and serum IgG1 and IgG2a titers as compared to TG-injected mice. Taken together, our results demonstrate that T. gondii infection inhibits tumor growth in the Lewis lung carcinoma mouse model through the induction of Th1 immune responses and antiangiogenic activity.
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MESH Headings
- Animals
- Base Sequence
- CD4-Positive T-Lymphocytes/immunology
- CD8-Positive T-Lymphocytes/immunology
- Carcinoma, Lewis Lung/blood supply
- Carcinoma, Lewis Lung/genetics
- Carcinoma, Lewis Lung/immunology
- Carcinoma, Lewis Lung/therapy
- Cell Line, Tumor
- Cytotoxicity, Immunologic
- DNA Primers/genetics
- Female
- Immunoglobulin G/blood
- Immunotherapy/methods
- In Vitro Techniques
- Interferon-gamma/genetics
- Mice
- Mice, Inbred C57BL
- Neovascularization, Pathologic
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Th1 Cells/immunology
- Toxoplasma/immunology
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Affiliation(s)
- Ju-Ock Kim
- Department of Internal Medicine, College of Medicine, Chungnam National University, Daejeon, Korea
| | - Sung-Soo Jung
- Department of Internal Medicine, College of Medicine, Chungnam National University, Daejeon, Korea
| | - Sun-Young Kim
- Department of Internal Medicine, College of Medicine, Chungnam National University, Daejeon, Korea
| | - Tae Yun Kim
- Department of Infection Biology, College of Medicine, Chungnam National University, Daejeon, Korea
| | - Dae-Whan Shin
- Department of Infection Biology, College of Medicine, Chungnam National University, Daejeon, Korea
- Research Institute for Medical Science, Chungnam National University, Daejeon, Korea
| | - Jae-Ho Lee
- Department of Pediatrics, College of Medicine, Chungnam National University, Daejeon, Korea
| | - Young-Ha Lee
- Department of Infection Biology, College of Medicine, Chungnam National University, Daejeon, Korea
- Research Institute for Medical Science, Chungnam National University, Daejeon, Korea
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38
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Homma S, Sagawa Y, Komita H, Koido S, Nagasaki E, Ryoma Y, Okamoto M. Mechanism of antitumor effect on mouse hepatocellular carcinoma by intratumoral injection of OK-432, a streptococcal preparation. Cancer Immunol Immunother 2007; 56:1265-74. [PMID: 17219148 PMCID: PMC11030927 DOI: 10.1007/s00262-006-0277-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2006] [Accepted: 12/15/2006] [Indexed: 02/04/2023]
Abstract
Intratumoral (i.t.) injection of OK-432, a streptococcal preparation, into implanted tumors of mouse hepatocellular carcinoma (MIH-2) showed antitumor effect including tumor eradication. Intraperitoneal administration of same dose OK-432 did not exhibit tumor suppressive effect. In vitro cytotoxic test suggested that direct cytotoxic effect of OK-432 was not associated with antitumor activity by i.t.-OK-432 treatment. It was also found that Toll-like receptor 4 signaling was not involved in i.t.-OK-432 treatment. Three mice out of five, which had shown tumor eradication by i.t.-OK-432 treatment did not reject re-challenge of MIH-2 cells. Splenocytes from i.t.-OK-432 treated mice did not produce IFN-gamma by stimulation with MIH-2 cells in vitro, but produced abundant IFN-gamma by stimulation with OK-432. Immunofluorescence microscopy demonstrated that CD4+T cells, but not CD8+T cells, infiltrated to i.t.-OK-432 treated tumor tissue produced IFN-gamma. Tumor-infiltrating CD4+T cells from i.t.-OK-432 treated tumor tissue produced IFN-gamma by in vitro stimulation with OK-432 higher than those from untreated tumor tissue. IFN-gamma directly induced apoptosis of MIH-2 cells in vitro. Collectively, i.t.-OK-432 treatment induced priming of CD4+T cells to antigenecity of OK-432, and repetitive i.t.-OK-432 treatment induced IFN-gamma production from OK-432-sensitized CD4+T cells in tumor site, leading to apoptosis of MIH-2 cells susceptible to IFN-gamma.
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MESH Headings
- Adjuvants, Immunologic/administration & dosage
- Adjuvants, Immunologic/pharmacology
- Adjuvants, Immunologic/therapeutic use
- Animals
- Antibodies, Monoclonal/pharmacology
- Antineoplastic Agents/administration & dosage
- Antineoplastic Agents/pharmacology
- Antineoplastic Agents/therapeutic use
- Apoptosis
- CD4-Positive T-Lymphocytes/immunology
- CD4-Positive T-Lymphocytes/metabolism
- Cell Line, Tumor/drug effects
- Cell Line, Tumor/pathology
- Drug Screening Assays, Antitumor
- Graft Rejection
- Immunization
- Injections, Intralesional
- Injections, Intraperitoneal
- Interferon-gamma/antagonists & inhibitors
- Interferon-gamma/immunology
- Interferon-gamma/metabolism
- Liver Neoplasms, Experimental/drug therapy
- Liver Neoplasms, Experimental/immunology
- Liver Neoplasms, Experimental/pathology
- Lymphocytes, Tumor-Infiltrating/immunology
- Lymphocytes, Tumor-Infiltrating/metabolism
- Male
- Mice
- Mice, Inbred C3H
- Neoplasm Transplantation
- Picibanil/administration & dosage
- Picibanil/pharmacology
- Picibanil/therapeutic use
- Streptococcus pyogenes
- T-Lymphocyte Subsets/immunology
- T-Lymphocyte Subsets/metabolism
- Toll-Like Receptor 4/physiology
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Affiliation(s)
- Sadamu Homma
- Department of Oncology, Institute of DNA Medicine, Jikei University School of Medicine, Tokyo, Japan.
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