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Yilmaz K, Haeberle S, Kim YO, Fritzler MJ, Weng SY, Goeppert B, Raker VK, Steinbrink K, Schuppan D, Enk A, Hadaschik EN. Regulatory T-cell deficiency leads to features of autoimmune liver disease overlap syndrome in scurfy mice. Front Immunol 2023; 14:1253649. [PMID: 37818371 PMCID: PMC10561387 DOI: 10.3389/fimmu.2023.1253649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 09/08/2023] [Indexed: 10/12/2023] Open
Abstract
Introduction Scurfy mice have a complete deficiency of functional regulatory T cells (Treg) due to a frameshift mutation in the Foxp3 gene. The impaired immune homeostasis results in a lethal lymphoproliferative disorder affecting multiple organs, including the liver. The autoimmune pathology in scurfy mice is in part accompanied by autoantibodies such as antinuclear antibodies (ANA). ANA are serological hallmarks of several autoimmune disorders including autoimmune liver diseases (AILD). However, the underlying pathogenesis and the role of Treg in AILD remain to be elucidated. The present study therefore aimed to characterize the liver disease in scurfy mice. Methods Sera from scurfy mice were screened for ANA by indirect immunofluorescence assay (IFA) and tested for a wide range of AILD-associated autoantibodies by enzyme-linked immunosorbent assay, line immunoassay, and addressable laser bead immunoassay. CD4+ T cells of scurfy mice were transferred into T cell-deficient B6/nude mice. Monoclonal autoantibodies from scurfy mice and recipient B6/nude mice were tested for ANA by IFA. Liver tissue of scurfy mice was analyzed by conventional histology. Collagen deposition in scurfy liver was quantified via hepatic hydroxyproline content. Real-time quantitative PCR was used to determine fibrosis-related hepatic gene expression. Hepatic immune cells were differentiated by flow cytometry. Results All scurfy mice produced ANA. AILD-associated autoantibodies, predominantly antimitochondrial antibodies, were detected at significantly higher levels in scurfy sera. CD4+ T cells from scurfy mice were sufficient to induce anti-dsDNA autoantibodies and ANA with an AILD-related nuclear envelope staining pattern. Liver histology revealed portal inflammation with bile duct damage and proliferation, as in primary biliary cholangitis (PBC), and interface hepatitis with portal-parenchymal necroinflammation, as found in autoimmune hepatitis (AIH). In scurfy liver, TNFα and fibrosis-related transcripts including Col1a1, Timp1, Acta2, Mmp2, and Mmp9 were upregulated. The level of proinflammatory monocytic macrophages (Ly-6Chi) was increased, while M2-type macrophages (CD206+) were downregulated compared to wildtype controls. Despite severe hepatic inflammation, fibrosis did not develop within 25 days, which is close to the lifespan of scurfy mice. Discussion Our findings suggest that Treg-deficient scurfy mice spontaneously develop clinical, serological, and immunopathological characteristics of AILD with overlapping features of PBC and AIH.
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Affiliation(s)
- Kaan Yilmaz
- Department of Dermatology, University of Heidelberg, Heidelberg, Germany
- Department of Dermatology, University Medical Center Mannheim, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Stefanie Haeberle
- Department of Dermatology, University of Heidelberg, Heidelberg, Germany
| | - Yong Ook Kim
- Institute of Translational Immunology, University Medical Center of Johannes Gutenberg University Mainz, Mainz, Germany
| | - Marvin J. Fritzler
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Shih-Yen Weng
- Institute of Translational Immunology, University Medical Center of Johannes Gutenberg University Mainz, Mainz, Germany
- Smart Healthcare Interdisciplinary College, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan
| | - Benjamin Goeppert
- Institute of Tissue Medicine and Pathology, University of Bern, Bern, Switzerland
- Institute of Pathology and Neuropathology, RKH Klinikum Ludwigsburg, Ludwigsburg, Germany
| | - Verena K. Raker
- Department of Dermatology, University Hospital Muenster, Muenster, Germany
| | - Kerstin Steinbrink
- Department of Dermatology, University Hospital Muenster, Muenster, Germany
| | - Detlef Schuppan
- Institute of Translational Immunology, University Medical Center of Johannes Gutenberg University Mainz, Mainz, Germany
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
| | - Alexander Enk
- Department of Dermatology, University of Heidelberg, Heidelberg, Germany
| | - Eva N. Hadaschik
- Department of Dermatology, University of Heidelberg, Heidelberg, Germany
- Department of Dermatology, University Hospital of Essen, Essen, Germany
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Seclì L, Infante L, Nocchi L, De Lucia M, Cotugno G, Leoni G, Micarelli E, Garzia I, Avalle L, Sdruscia G, Troise F, Allocca S, Romano G, Scarselli E, D'Alise AM. Vector Aided Microenvironment programming (VAMP): reprogramming the TME with MVA virus expressing IL-12 for effective antitumor activity. J Immunother Cancer 2023; 11:jitc-2023-006718. [PMID: 37117006 PMCID: PMC10151998 DOI: 10.1136/jitc-2023-006718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/11/2023] [Indexed: 04/30/2023] Open
Abstract
BACKGROUND Tumor microenvironment (TME) represents a critical hurdle in cancer immunotherapy, given its ability to suppress antitumor immunity. Several efforts are made to overcome this hostile TME with the development of new therapeutic strategies modifying TME to boost antitumor immunity. Among these, cytokine-based approaches have been pursued for their known immunomodulatory effects on different cell populations within the TME. IL-12 is a potent pro-inflammatory cytokine that demonstrates striking immune activation and tumor control but causes severe adverse effects when systemically administered. Thus, local administration is considered a potential strategy to achieve high cytokine concentrations at the tumor site while sparing systemic adverse effects. METHODS Modified Vaccinia Ankara (MVA) vector is a potent inducer of pro-inflammatory response. Here, we cloned IL-12 into the genome of MVA for intratumoral immunotherapy, combining the immunomodulatory properties of both the vector and the cargo. The antitumor activity of MVA-IL-12 and its effect on TME reprogramming were investigated in preclinical tumor models. RNA sequencing (RNA-Seq) analysis was performed to assess changes in the TME in treated and distal tumors and the effect on the intratumoral T-cell receptor repertoire. RESULTS Intratumoral injection of MVA-IL-12 resulted in strong antitumor activity with the complete remission of established tumors in multiple murine models, including those resistant to checkpoint inhibitors. The therapeutic activity of MVA-IL-12 was associated with very low levels of circulating cytokine. Effective TME reprogramming was demonstrated on treatment, with the reduction of immunosuppressive M2 macrophages while increasing pro-inflammatory M1, and recruitment of dendritic cells. TME switch from immunosuppressive into immunostimulatory environment allowed for CD8 T cells priming and expansion leading to tumor attack. CONCLUSIONS Intratumoral administration of MVA-IL-12 turns immunologically 'cold' tumors 'hot' and overcomes resistance to programmed cell death protein-1 blockade.
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Affiliation(s)
| | - Luigia Infante
- NousCom, Rome, Italy
- University of Rome Tor Vergata, Roma, Lazio, Italy
| | | | | | | | | | | | | | - Lidia Avalle
- Department of Molecular Biotechnology and Health Science, University of Turin, Torino, Piemonte, Italy
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Lin A, Yao J, Cheng Q, Liu Z, Luo P, Zhang J. Mutations Status of NOTCH Signaling Pathway Predict Prognosis of Immune Checkpoint Inhibitors in Colorectal Cancer. J Inflamm Res 2023; 16:1693-1709. [PMID: 37092128 PMCID: PMC10120821 DOI: 10.2147/jir.s394894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 04/11/2023] [Indexed: 04/25/2023] Open
Abstract
Purpose In recent years, tumour immunotherapy has ushered in a new era of oncology treatment. However, the use of immune checkpoint inhibitors (ICIs) in the treatment of CRC remains limited. There is an urgent clinical need for precise biomarkers that can aid in the screening and treatment of CRC subtypes. Therefore, we focused on the NOTCH pathway mutation status and conducted a systematic analysis for its predictive value of ICI therapy efficacy. Methods We collected mutational and clinical data from cohorts of CRC patients treated with ICIs. The relationship between NOTCH pathway mutations (NOTCH-MT) and CRC immunotherapy prognosis was analysed using univariate and multivariate Cox regression models. CRC cohort data from The Cancer Genome Atlas (TCGA) database were combined to obtain a comprehensive overview of immunogenicity and tumour microenvironment (TME) differences among different NOTCH pathway mutation statuses. Results We observed greater infiltration of M1 macrophages, CD8+ T cells, neutrophils, and activated natural killer (NK) cells with NOTCH-MT status. Immunogenicity was also significantly higher in patients with NOTCH-MT, as were tumour mutational burden (TMB), neoantigen load (NAL), and the number of mutations in DNA damage repair (DDR) pathways. Conclusion NOTCH-MT status was strongly associated with the prognosis of CRC patients treated with ICIs and is expected to serve as a novel biomarker and therapeutic target for CRC.
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Affiliation(s)
- Anqi Lin
- Department of Oncology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, People’s Republic of China
| | - Jiarong Yao
- Department of Oncology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, People’s Republic of China
| | - Quan Cheng
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan, People’s Republic of China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, People’s Republic of China
| | - Zaoqu Liu
- Department of Interventional Radiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, People’s Republic of China
| | - Peng Luo
- Department of Oncology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, People’s Republic of China
- Correspondence: Peng Luo; Jian Zhang, Department of Oncology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, People’s Republic of China, Tel +86-18588447321; +86-13925091863, Email ;
| | - Jian Zhang
- Department of Oncology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, People’s Republic of China
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Jeon D, McNeel DG. Toll-like receptor agonist combinations augment mouse T-cell anti-tumor immunity via IL-12- and interferon ß-mediated suppression of immune checkpoint receptor expression. Oncoimmunology 2022; 11:2054758. [PMID: 35340661 PMCID: PMC8942433 DOI: 10.1080/2162402x.2022.2054758] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 03/14/2022] [Accepted: 03/15/2022] [Indexed: 12/20/2022] Open
Abstract
We previously found that activated CD8+ T-cells increase expression of PD-1, which can be attenuated in the presence of specific Toll-like receptor (TLR) agonists, mediated by IL-12 secreted by professional antigen-presenting cells. While these CD8+ T-cells had greater anti-tumor activity, T-cells stimulated by different TLR had different gene expression profiles. Consequently, we sought to determine whether combinations of TLR agonists might further affect the expression of T-cell checkpoint receptors and improve T-cell anti-tumor immunity. Activation of CD8+ T-cells in the presence of specific TLR ligands resulted in decreased expression of PD-1, LAG-3, and CD160, notably with combinations of TLR1/2, TLR3, and TLR9 agonists. Immunization of E.G7-OVA or TRAMP-C1 tumor-bearing mice with peptide or DNA vaccines, co-administered with combination of TLR3 and TLR9 agonists, showed greater suppression of tumor growth. The anti-tumor effect of TLR1/2 and/or TLR9, but not TLR3, was abrogated in IL-12KO mice. RNA sequencing of TLR-conditioned CD8+ T-cells revealed IL-12 pathway activation, and type 1 IFN pathway activation following TLR3 stimulation. Our results provide a mechanistic rationale for the choice of optimal combinations of TLR ligands to use as adjuvants to improve the efficacy of anti-tumor vaccines.
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Affiliation(s)
- Donghwan Jeon
- University of Wisconsin Carbone Cancer Center, Madison, WI, USA
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Yu CF, Chang CH, Wang CC, Hong JH, Chiang CS, Chen FH. Local Interleukin-12 Treatment Enhances the Efficacy of Radiation Therapy by Overcoming Radiation-Induced Immune Suppression. Int J Mol Sci 2021; 22:ijms221810053. [PMID: 34576217 PMCID: PMC8468040 DOI: 10.3390/ijms221810053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/11/2021] [Accepted: 09/16/2021] [Indexed: 01/31/2023] Open
Abstract
Radiation therapy (RT) recruits myeloid cells, leading to an immunosuppressive microenvironment that impedes its efficacy against tumors. Combination of immunotherapy with RT is a potential approach to reversing the immunosuppressive condition and enhancing tumor control after RT. This study aimed to assess the effects of local interleukin-12 (IL-12) therapy on improving the efficacy of RT in a murine prostate cancer model. Combined treatment effectively shrunk the radioresistant tumors by inducing a T helper-1 immune response and influx of CD8+ T cells. It also delayed the radiation-induced vascular damage accompanied by increased α-smooth muscle actin-positive pericyte coverage and blood perfusion. Moreover, RT significantly reduced the IL-12-induced levels of alanine aminotransferase in blood. However, it did not further improve the IL-12-induced anti-tumor effect on distant tumors. Upregulated expression of T-cell exhaustion-associated genes was found in tumors treated with IL-12 only and combined treatment, suggesting that T-cell exhaustion is potentially correlated with tumor relapse in combined treatment. In conclusion, this study illustrated that combination of radiation and local IL-12 therapy enhanced the host immune response and promoted vascular maturation and function. Furthermore, combination treatment was associated with less systemic toxicity than IL-12 alone, providing a potential option for tumor therapy in clinical settings.
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Affiliation(s)
- Ching-Fang Yu
- Radiation Biology Research Center, Institute for Radiological Research, Chang Gung Memorial Hospital Linkou Branch, Chang Gung University, Taoyuan 33302, Taiwan; (C.-F.Y.); (C.-C.W.); (J.-H.H.)
- Department of Radiation Oncology, Chang Gung Memorial Hospital Linkou Branch, Taoyuan 33382, Taiwan
| | - Chun-Hsiang Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan;
| | - Chun-Chieh Wang
- Radiation Biology Research Center, Institute for Radiological Research, Chang Gung Memorial Hospital Linkou Branch, Chang Gung University, Taoyuan 33302, Taiwan; (C.-F.Y.); (C.-C.W.); (J.-H.H.)
- Department of Radiation Oncology, Chang Gung Memorial Hospital Linkou Branch, Taoyuan 33382, Taiwan
- Department of Medical Imaging and Radiological Sciences, Chang Gung University, Taoyuan 33302, Taiwan
| | - Ji-Hong Hong
- Radiation Biology Research Center, Institute for Radiological Research, Chang Gung Memorial Hospital Linkou Branch, Chang Gung University, Taoyuan 33302, Taiwan; (C.-F.Y.); (C.-C.W.); (J.-H.H.)
- Department of Radiation Oncology, Chang Gung Memorial Hospital Linkou Branch, Taoyuan 33382, Taiwan
- Department of Medical Imaging and Radiological Sciences, Chang Gung University, Taoyuan 33302, Taiwan
| | - Chi-Shiun Chiang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan;
- Institute of Nuclear Engineering and Science, National Tsing Hua University, Hsinchu 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan
- Correspondence: (C.-S.C.); (F.-H.C.); Tel.: +886-3-5733168 (C.-S.C.); +886-3-2118800 (ext. 3838) (F.-H.C.)
| | - Fang-Hsin Chen
- Radiation Biology Research Center, Institute for Radiological Research, Chang Gung Memorial Hospital Linkou Branch, Chang Gung University, Taoyuan 33302, Taiwan; (C.-F.Y.); (C.-C.W.); (J.-H.H.)
- Department of Radiation Oncology, Chang Gung Memorial Hospital Linkou Branch, Taoyuan 33382, Taiwan
- Department of Medical Imaging and Radiological Sciences, Chang Gung University, Taoyuan 33302, Taiwan
- Correspondence: (C.-S.C.); (F.-H.C.); Tel.: +886-3-5733168 (C.-S.C.); +886-3-2118800 (ext. 3838) (F.-H.C.)
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Accogli T, Bruchard M, Végran F. Modulation of CD4 T Cell Response According to Tumor Cytokine Microenvironment. Cancers (Basel) 2021; 13:cancers13030373. [PMID: 33498483 PMCID: PMC7864169 DOI: 10.3390/cancers13030373] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/08/2021] [Accepted: 01/18/2021] [Indexed: 12/19/2022] Open
Abstract
The advancement of knowledge on tumor biology over the past decades has demonstrated a close link between tumor cells and cells of the immune system. In this context, cytokines have a major role because they act as intermediaries in the communication into the tumor bed. Cytokines play an important role in the homeostasis of innate and adaptive immunity. In particular, they participate in the differentiation of CD4 T lymphocytes. These cells play essential functions in the anti-tumor immune response but can also be corrupted by tumors. The differentiation of naïve CD4 T cells depends on the cytokine environment in which they are activated. Additionally, at the tumor site, their activity can also be modulated according to the cytokines of the tumor microenvironment. Thus, polarized CD4 T lymphocytes can see their phenotype evolve, demonstrating functional plasticity. Knowledge of the impact of these cytokines on the functions of CD4 T cells is currently a source of innovation, for therapeutic purposes. In this review, we discuss the impact of the major cytokines present in tumors on CD4 T cells. In addition, we summarize the main therapeutic strategies that can modulate the CD4 response through their impact on cytokine production.
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Affiliation(s)
- Théo Accogli
- Faculté des Sciences de Santé, Université Bourgogne Franche-Comté, 21000 Dijon, France; (T.A.); (M.B.)
- Team “CAdIR”, CRI INSERM UMR1231 “Lipids, Nutrition and Cancer”, Dijon 21000, France
- LipSTIC LabEx, 21000 Dijon, France
| | - Mélanie Bruchard
- Faculté des Sciences de Santé, Université Bourgogne Franche-Comté, 21000 Dijon, France; (T.A.); (M.B.)
- Team “CAdIR”, CRI INSERM UMR1231 “Lipids, Nutrition and Cancer”, Dijon 21000, France
- LipSTIC LabEx, 21000 Dijon, France
- Centre Georges François Leclerc, 21000 Dijon, France
| | - Frédérique Végran
- Faculté des Sciences de Santé, Université Bourgogne Franche-Comté, 21000 Dijon, France; (T.A.); (M.B.)
- Team “CAdIR”, CRI INSERM UMR1231 “Lipids, Nutrition and Cancer”, Dijon 21000, France
- LipSTIC LabEx, 21000 Dijon, France
- Centre Georges François Leclerc, 21000 Dijon, France
- Correspondence:
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Ribatti D, Tamma R, Crivellato E. Cross talk between natural killer cells and mast cells in tumor angiogenesis. Inflamm Res 2018; 68:19-23. [PMID: 30132016 DOI: 10.1007/s00011-018-1181-4] [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: 07/05/2018] [Revised: 08/13/2018] [Accepted: 08/16/2018] [Indexed: 12/13/2022] Open
Abstract
Natural killer (NK) cells are large granular lymphocytes of the innate immune system, responsible for direct targeting and killing of both virally infected and transformed cells. Under pathological conditions and during inflammation, NK cells extravasate into the lymph nodes and accumulate at inflammatory or tumor sites. The activation of NK cells depends on an intricate balance between activating and inhibitory signals that determines if a target will be susceptible to NK-mediated lysis. Many experimental evidences indicate that NK cells are also involved in several immunoregulatory processes and have the ability to modulate the adaptive immune responses. Many other important aspects about NK cell biology are emerging in these last years. The aim of this review is to elucidate the role of NK cells in tumor angiogenesis and their interaction with mast cells. In fact, it has been observed that NK cells produce pro-angiogenic factors and participate alone or in cooperation with mast cells to the regulation of angiogenesis in both physiological and pathological conditions including tumors.
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Affiliation(s)
- Domenico Ribatti
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, University of Bari Medical School, Policlinico, Piazza G. Cesare, 11, 70124, Bari, Italy.
| | - Roberto Tamma
- Department of Basic Medical Sciences, Neurosciences and Sensory Organs, University of Bari Medical School, Policlinico, Piazza G. Cesare, 11, 70124, Bari, Italy
| | - Enrico Crivellato
- Department of Medicine, Section of Human Anatomy, University of Udine, Udine, Italy
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Burkart C, Mukhopadhyay A, Shirley SA, Connolly RJ, Wright JH, Bahrami A, Campbell JS, Pierce RH, Canton DA. Improving therapeutic efficacy of IL-12 intratumoral gene electrotransfer through novel plasmid design and modified parameters. Gene Ther 2018. [DOI: 10.1038/s41434-018-0006-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Interleukin-12 inhibits pathological neovascularization in mouse model of oxygen-induced retinopathy. Sci Rep 2016; 6:28140. [PMID: 27312090 PMCID: PMC4911585 DOI: 10.1038/srep28140] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 05/27/2016] [Indexed: 12/15/2022] Open
Abstract
Hypoxia-induced retinal neovascularization is a major pathological condition in many vision-threatening diseases. In the present study, we determined whether interleukin (IL)-12, a cytokine that regulates angiogenesis, plays a role in the neovascularization in a mouse model of oxygen-induced retinopathy (OIR). We found that the expressions of the mRNAs of both IL-12p35 and IL-12p40 were significantly reduced in the OIR retinas compared to that of the room air-raised control. The sizes of the avascular areas and neovascular tufts were larger in IL-12p40 knock-out (KO) mice than that in wild type (WT) mice. In addition, an intravitreal injection of recombinant IL-12 reduced both avascular areas and neovascular tufts. IL-12 injection enhanced the expressions of interferon-gamma (IFN-γ) and other downstream chemokines. In an in vitro system, IL-12 had no significant effect on tube formation of human retinal microvascular endothelial cells (HRECs). Moreover, a blockade of IFN-γ suppressed the inhibitory effect of IL-12 on pathological neovascularization. These results suggest that IL-12 plays important roles in inhibiting pathological retinal neovascularization.
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New insights into IL-12-mediated tumor suppression. Cell Death Differ 2014; 22:237-46. [PMID: 25190142 DOI: 10.1038/cdd.2014.134] [Citation(s) in RCA: 339] [Impact Index Per Article: 33.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2014] [Revised: 07/17/2014] [Accepted: 07/21/2014] [Indexed: 12/14/2022] Open
Abstract
During the past two decades, interleukin-12 (IL-12) has emerged as one of the most potent cytokines in mediating antitumor activity in a variety of preclinical models. Through pleiotropic effects on different immune cells that form the tumor microenvironment, IL-12 establishes a link between innate and adaptive immunity that involves different immune effector cells and cytokines depending on the type of tumor or the affected tissue. The robust antitumor response exerted by IL-12, however, has not yet been successfully translated into the clinics. The majority of clinical trials involving treatment with IL-12 failed to show sustained antitumor responses and were associated to toxic side effects. Here we discuss the therapeutic effects of IL-12 from preclinical to clinical studies, and will highlight promising strategies to take advantage of the antitumor activity of IL-12 while limiting adverse effects.
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Resende LA, Roatt BM, Aguiar-Soares RDDO, Viana KF, Mendonça LZ, Lanna MF, Silveira-Lemos D, Corrêa-Oliveira R, Martins-Filho OA, Fujiwara RT, Carneiro CM, Reis AB, Giunchetti RC. Cytokine and nitric oxide patterns in dogs immunized with LBSap vaccine, before and after experimental challenge with Leishmania chagasi plus saliva of Lutzomyia longipalpis. Vet Parasitol 2013; 198:371-81. [PMID: 24129068 PMCID: PMC7115768 DOI: 10.1016/j.vetpar.2013.09.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Revised: 09/04/2013] [Accepted: 09/12/2013] [Indexed: 12/23/2022]
Abstract
In the studies presented here, dogs were vaccinated against Leishmania (Leishmania) chagasi challenge infection using a preparation of Leishmania braziliensis promastigote proteins and saponin as adjuvant (LBSap). Vaccination with LBSap induced a prominent type 1 immune response that was characterized by increased levels of interleukin (IL-) 12 and interferon gamma (IFN-γ) production by peripheral blood mononuclear cells (PBMC) upon stimulation with soluble vaccine antigen. Importantly, results showed that this type of responsiveness was sustained after challenge infection; at day 90 and 885 after L. chagasi challenge infection, PBMCs from LBSap vaccinated dogs produced more IL-12, IFN-γ and concomitant nitric oxide (NO) when stimulated with Leishmania antigens as compared to PBMCs from respective control groups (saponin, LB- treated, or non-treated control dogs). Moreover, transforming growth factor (TGF)-β decreased in the supernatant of SLcA-stimulated PBMCs in the LBSap group at 90 days. Bone marrow parasitological analysis revealed decreased frequency of parasitism in the presence of vaccine antigen. It is concluded that vaccination of dogs with LBSap vaccine induced a long-lasting type 1 immune response against L. chagasi challenge infection.
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Affiliation(s)
- Lucilene Aparecida Resende
- Laboratório de Imunopatologia, Núcleo de Pesquisas em Ciências Biológicas/NUPEB, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brazil; Laboratório de Biologia das Interações Celulares, Departamento de Morfologia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Marcenaro E, Ferranti B, Falco M, Moretta L, Moretta A. Human NK cells directly recognize Mycobacterium bovis via TLR2 and acquire the ability to kill monocyte-derived DC. Int Immunol 2008; 20:1155-67. [DOI: 10.1093/intimm/dxn073] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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