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Evans JV, Suman S, Goruganthu MUL, Tchekneva EE, Guan S, Arasada RR, Antonucci A, Piao L, Ilgisonis I, Bobko AA, Driesschaert B, Uzhachenko RV, Hoyd R, Samouilov A, Amann J, Wu R, Wei L, Pallerla A, Ryzhov SV, Feoktistov I, Park KP, Kikuchi T, Castro J, Ivanova AV, Kanagasabai T, Owen DH, Spakowicz DJ, Zweier JL, Carbone DP, Novitskiy SV, Khramtsov VV, Shanker A, Dikov MM. Improving combination therapies: targeting A2B-adenosine receptor to modulate metabolic tumor microenvironment and immunosuppression. J Natl Cancer Inst 2023; 115:1404-1419. [PMID: 37195421 PMCID: PMC10637048 DOI: 10.1093/jnci/djad091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 11/18/2022] [Accepted: 05/12/2023] [Indexed: 05/18/2023] Open
Abstract
BACKGROUND We investigated the role of A2B-adenosine receptor in regulating immunosuppressive metabolic stress in the tumor microenvironment. Novel A2B-adenosine receptor antagonist PBF-1129 was tested for antitumor activity in mice and evaluated for safety and immunologic efficacy in a phase I clinical trial of patients with non-small cell lung cancer. METHODS The antitumor efficacy of A2B-adenosine receptor antagonists and their impact on the metabolic and immune tumor microenvironment were evaluated in lung, melanoma, colon, breast, and epidermal growth factor receptor-inducible transgenic cancer models. Employing electron paramagnetic resonance, we assessed changes in tumor microenvironment metabolic parameters, including pO2, pH, and inorganic phosphate, during tumor growth and evaluated the immunologic effects of PBF-1129, including its pharmacokinetics, safety, and toxicity, in patients with non-small cell lung cancer. RESULTS Levels of metabolic stress correlated with tumor growth, metastasis, and immunosuppression. Tumor interstitial inorganic phosphate emerged as a correlative and cumulative measure of tumor microenvironment stress and immunosuppression. A2B-adenosine receptor inhibition alleviated metabolic stress, downregulated expression of adenosine-generating ectonucleotidases, increased expression of adenosine deaminase, decreased tumor growth and metastasis, increased interferon γ production, and enhanced the efficacy of antitumor therapies following combination regimens in animal models (anti-programmed cell death 1 protein vs anti-programmed cell death 1 protein plus PBF-1129 treatment hazard ratio = 11.74 [95% confidence interval = 3.35 to 41.13], n = 10, P < .001, 2-sided F test). In patients with non-small cell lung cancer, PBF-1129 was well tolerated, with no dose-limiting toxicities; demonstrated pharmacologic efficacy; modulated the adenosine generation system; and improved antitumor immunity. CONCLUSIONS Data identify A2B-adenosine receptor as a valuable therapeutic target to modify metabolic and immune tumor microenvironment to reduce immunosuppression, enhance the efficacy of immunotherapies, and support clinical application of PBF-1129 in combination therapies.
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Affiliation(s)
- Jason V Evans
- Department of Internal Medicine, The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
- Department of Pathology, Anatomy, and Laboratory Medicine, School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Shankar Suman
- Department of Internal Medicine, The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Mounika Uttam L Goruganthu
- Department of Internal Medicine, The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Elena E Tchekneva
- Department of Internal Medicine, The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Shuxiao Guan
- Department of Internal Medicine, The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Rajeswara Rao Arasada
- Department of Internal Medicine, The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
- Pfizer Inc, New York, NY, USA
| | - Anneliese Antonucci
- Department of Internal Medicine, The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Longzhu Piao
- Department of Internal Medicine, The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Irina Ilgisonis
- N.V. Sklifosovsky Institute of Clinical Medicine, I.M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Andrey A Bobko
- In Vivo Multifunctional Magnetic Resonance Center, West Virginia University, Morgantown, WV, USA
- Department of Biochemistry, West Virginia University, Morgantown, WV, USA
| | - Benoit Driesschaert
- In Vivo Multifunctional Magnetic Resonance Center, West Virginia University, Morgantown, WV, USA
- Department of Pharmaceutical Sciences, School of Pharmacy, West Virginia University, Morgantown, WV, USA
| | - Roman V Uzhachenko
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, School of Medicine, Meharry Medical College, Nashville, TN, USA
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Rebecca Hoyd
- Department of Internal Medicine, The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Alexandre Samouilov
- Department of Internal Medicine, The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Joseph Amann
- Department of Internal Medicine, The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Ruohan Wu
- Department of Internal Medicine, The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Lai Wei
- Department of Internal Medicine, The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Aaditya Pallerla
- Department of Internal Medicine, The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Sergey V Ryzhov
- Center for Molecular Medicine, Maine Medical Center Research Institute, Scarborough, ME, USA
| | - Igor Feoktistov
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University, Nashville, TN, USA
| | - Kyungho P Park
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University, Nashville, TN, USA
| | - Takefumi Kikuchi
- Division of Gastroenterology, Department of Internal Medicine, Sapporo Shirakabadai Hospital, Sapporo, Japan
| | | | - Alla V Ivanova
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, School of Medicine, Meharry Medical College, Nashville, TN, USA
- School of Graduate Studies, Meharry Medical College, Nashville, TN, USA
| | - Thanigaivelan Kanagasabai
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, School of Medicine, Meharry Medical College, Nashville, TN, USA
- School of Graduate Studies, Meharry Medical College, Nashville, TN, USA
| | - Dwight H Owen
- Department of Internal Medicine, The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Daniel J Spakowicz
- Department of Internal Medicine, The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Jay L Zweier
- Department of Internal Medicine, The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - David P Carbone
- Department of Internal Medicine, The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Sergey V Novitskiy
- Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University, Nashville, TN, USA
| | - Valery V Khramtsov
- In Vivo Multifunctional Magnetic Resonance Center, West Virginia University, Morgantown, WV, USA
- Department of Biochemistry, West Virginia University, Morgantown, WV, USA
| | - Anil Shanker
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, School of Medicine, Meharry Medical College, Nashville, TN, USA
- School of Graduate Studies, Meharry Medical College, Nashville, TN, USA
- Vanderbilt-Ingram Cancer Center, Vanderbilt University, Nashville, TN, USA
- Vanderbilt Institute for Infection, Immunology and Inflammation, Vanderbilt University, Nashville, TN, USA
| | - Mikhail M Dikov
- Department of Internal Medicine, The James Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
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Uzhachenko RV, Bharti V, Ouyang Z, Blevins A, Mont S, Saleh N, Lawrence HA, Shen C, Chen SC, Ayers GD, DeNardo DG, Arteaga C, Richmond A, Vilgelm AE. Metabolic modulation by CDK4/6 inhibitor promotes chemokine-mediated recruitment of T cells into mammary tumors. Cell Rep 2021; 35:109271. [PMID: 34161761 DOI: 10.1016/j.celrep.2021.109271] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Uzhachenko RV, Bharti V, Ouyang Z, Blevins A, Mont S, Saleh N, Lawrence HA, Shen C, Chen SC, Ayers GD, DeNardo DG, Arteaga C, Richmond A, Vilgelm AE. Metabolic modulation by CDK4/6 inhibitor promotes chemokine-mediated recruitment of T cells into mammary tumors. Cell Rep 2021; 35:108944. [PMID: 33826903 PMCID: PMC8383195 DOI: 10.1016/j.celrep.2021.108944] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 01/08/2021] [Accepted: 03/15/2021] [Indexed: 01/15/2023] Open
Abstract
Inhibitors of cyclin-dependent kinases 4 and 6 (CDK4/6i) delay progression of metastatic breast cancer. However, complete responses are uncommon and tumors eventually relapse. Here, we show that CDK4/6i can enhance efficacy of T cell-based therapies, such as adoptive T cell transfer or T cell-activating antibodies anti-OX40/anti-4-1BB, in murine breast cancer models. This effect is driven by the induction of chemokines CCL5, CXCL9, and CXCL10 in CDK4/6i-treated tumor cells facilitating recruitment of activated CD8+ T cells, but not Tregs, into the tumor. Mechanistically, chemokine induction is associated with metabolic stress that CDK4/6i treatment induces in breast cancer cells. Despite the cell cycle arrest, CDK4/6i-treated cells retain high metabolic activity driven by deregulated PI3K/mTOR pathway. This causes cell hypertrophy and increases mitochondrial content/activity associated with oxidative stress and inflammatory stress response. Our findings uncover a link between tumor metabolic vulnerabilities and anti-tumor immunity and support further development of CDK4/6i and immunotherapy combinations.
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Affiliation(s)
- Roman V Uzhachenko
- Comprehensive Cancer Center - James, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Vijaya Bharti
- Comprehensive Cancer Center - James, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Zhufeng Ouyang
- Comprehensive Cancer Center - James, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Ashlyn Blevins
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN 37212, USA
| | - Stacey Mont
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN 37212, USA
| | - Nabil Saleh
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN 37212, USA
| | - Hunter A Lawrence
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN 37212, USA
| | - Chengli Shen
- Comprehensive Cancer Center - James, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Sheau-Chiann Chen
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN 37212, USA
| | - Gregory D Ayers
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN 37212, USA
| | - David G DeNardo
- Department of Medicine, Washington University St. Louis, School of Medicine, St. Louis, MO 63110, USA
| | - Carlos Arteaga
- Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Ann Richmond
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN 37212, USA; Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN 37212, USA
| | - Anna E Vilgelm
- Comprehensive Cancer Center - James, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA; Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA.
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Uzhachenko RV, Shanker A. CD8 + T Lymphocyte and NK Cell Network: Circuitry in the Cytotoxic Domain of Immunity. Front Immunol 2019; 10:1906. [PMID: 31456803 PMCID: PMC6700470 DOI: 10.3389/fimmu.2019.01906] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Accepted: 07/29/2019] [Indexed: 12/15/2022] Open
Abstract
Multiple effector layers in the immune system ensure an optimal temporal and spatial distribution of immune defense. Cytotoxic innate lymphoid natural killers (NK) and adaptive CD8+ T lymphocytes (CTL) interact to elicit specific cytolytic outcomes. The CTL carry antigen-specific T cell receptors (TCR) to recognize cognate peptides bound with major histocompatibility complex class-I (MHC-I) or human leukocyte antigen (HLA) molecules on target cells. Upon TCR engagement with MHC-I:peptide at a threshold of avidity, T cell intracellular programs converge into cytolytic activity. By contrast, NK cells lack antigen-specific receptors but express a repertoire of highly polymorphic and polygenic inhibitory and activating receptors that bind various ligands including MHC and like molecules. A highly calibrated maturation enables NK cells to eliminate target cells with lowered or absent MHC-I or induced MHC-I-related molecules while maintaining their tolerance toward self-MHC. Both CTL and mature NK cells undergo membranous reorganization and express various effector molecules to eliminate aberrant cells undergoing a stress of transformation, infection or other pathological noxa. Here, we present the cellular modules that underlie the CTL–NK circuitry to maximize their effector cooperativity against stressed or cancerous cells.
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Affiliation(s)
- Roman V Uzhachenko
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, School of Medicine, Meharry Medical College, Nashville, TN, United States
| | - Anil Shanker
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, School of Medicine, Meharry Medical College, Nashville, TN, United States.,Host-Tumor Interactions Research Program, Vanderbilt-Ingram Comprehensive Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, United States.,Vanderbilt Center for Immunobiology, Vanderbilt University School of Medicine, Nashville, TN, United States.,Vanderbilt Institute for Infection, Immunology and Inflammation, Vanderbilt University School of Medicine, Nashville, TN, United States
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Tchekneva EE, Goruganthu MUL, Uzhachenko RV, Thomas PL, Antonucci A, Chekneva I, Koenig M, Piao L, Akhter A, de Aquino MTP, Ranganathan P, Long N, Magliery T, Valujskikh A, Evans JV, Arasada RR, Massion PP, Carbone DP, Shanker A, Dikov MM. Correction to: Determinant roles of dendritic cell-expressed Notch Delta-like and Jagged ligands on anti-tumor T-cell immunity. J Immunother Cancer 2019; 7:124. [PMID: 31064404 PMCID: PMC6505242 DOI: 10.1186/s40425-019-0592-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 04/09/2019] [Indexed: 11/23/2022] Open
Affiliation(s)
- Elena E Tchekneva
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Wexner Medical Center and The James Comprehensive Cancer Center, 460 W 12th Ave, 484 BRT, Columbus, OH, 43210, USA
| | - Mounika U L Goruganthu
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Wexner Medical Center and The James Comprehensive Cancer Center, 460 W 12th Ave, 484 BRT, Columbus, OH, 43210, USA
| | - Roman V Uzhachenko
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, Meharry Medical College School of Medicine, 2005 Harold D. West Basic Sciences Building, 1023 21st Ave N, Nashville, TN, 37208, USA
| | - Portia L Thomas
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, Meharry Medical College School of Medicine, 2005 Harold D. West Basic Sciences Building, 1023 21st Ave N, Nashville, TN, 37208, USA.,Department of Microbiology, Immunology and Physiology, Meharry Medical College School of Medicine, Nashville, USA.,School of Graduate Studies and Research, Meharry Medical College, Nashville, TN, USA
| | - Anneliese Antonucci
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Wexner Medical Center and The James Comprehensive Cancer Center, 460 W 12th Ave, 484 BRT, Columbus, OH, 43210, USA
| | - Irina Chekneva
- Sechenov First Moscow State Medical University, Moscow, Russia
| | - Michael Koenig
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Wexner Medical Center and The James Comprehensive Cancer Center, 460 W 12th Ave, 484 BRT, Columbus, OH, 43210, USA
| | - Longzhu Piao
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Wexner Medical Center and The James Comprehensive Cancer Center, 460 W 12th Ave, 484 BRT, Columbus, OH, 43210, USA
| | - Anwari Akhter
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Wexner Medical Center and The James Comprehensive Cancer Center, 460 W 12th Ave, 484 BRT, Columbus, OH, 43210, USA
| | - Maria Teresa P de Aquino
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, Meharry Medical College School of Medicine, 2005 Harold D. West Basic Sciences Building, 1023 21st Ave N, Nashville, TN, 37208, USA
| | - Parvathi Ranganathan
- Division of Hematology, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Nicholas Long
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, USA
| | - Thomas Magliery
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, USA
| | - Anna Valujskikh
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH, USA
| | - Jason V Evans
- Department of Pathology, West Virginia University, Morgantown, WV, USA
| | - Rajeswara R Arasada
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Wexner Medical Center and The James Comprehensive Cancer Center, 460 W 12th Ave, 484 BRT, Columbus, OH, 43210, USA
| | - Pierre P Massion
- Department of Medicine, Vanderbilt University, Nashville, TN, USA
| | - David P Carbone
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Wexner Medical Center and The James Comprehensive Cancer Center, 460 W 12th Ave, 484 BRT, Columbus, OH, 43210, USA
| | - Anil Shanker
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, Meharry Medical College School of Medicine, 2005 Harold D. West Basic Sciences Building, 1023 21st Ave N, Nashville, TN, 37208, USA. .,School of Graduate Studies and Research, Meharry Medical College, Nashville, TN, USA. .,Host-Tumor Interactions Research Program, Vanderbilt-Ingram Comprehensive Cancer Center, Vanderbilt University, Nashville, TN, USA. .,Vanderbilt Institute for Infection, Immunology and Inflammation, Vanderbilt University, Nashville, TN, USA.
| | - Mikhail M Dikov
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Wexner Medical Center and The James Comprehensive Cancer Center, 460 W 12th Ave, 484 BRT, Columbus, OH, 43210, USA.
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Tchekneva EE, Goruganthu MUL, Uzhachenko RV, Thomas PL, Antonucci A, Chekneva I, Koenig M, Piao L, Akhter A, de Aquino MTP, Ranganathan P, Long N, Magliery T, Valujskikh A, Evans JV, Arasada RR, Massion PP, Carbone DP, Shanker A, Dikov MM. Determinant roles of dendritic cell-expressed Notch Delta-like and Jagged ligands on anti-tumor T cell immunity. J Immunother Cancer 2019; 7:95. [PMID: 30940183 PMCID: PMC6446314 DOI: 10.1186/s40425-019-0566-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 03/12/2019] [Indexed: 01/08/2023] Open
Abstract
Background Notch intercellular communication instructs tissue-specific T-cell development and function. In this study, we explored the roles of dendritic cell (DC)-expressed Notch ligands in the regulation of T-cell effector function. Methods We generated mice with CD11c lineage-specific deletion of Notch Delta-like ligand (Dll)1 and Jagged (Jag)2. Using these genetically-ablated mice and engineered pharmacological Notch ligand constructs, the roles of various Delta-like and Jagged ligands in the regulation of T-cell-mediated immunity were investigated. We assessed tumor growth, mouse survival, cytokine production, immunophenotyping of myeloid and lymphoid populations infiltrating the tumors, expression of checkpoint molecules and T-cell function in the experimental settings of murine lung and pancreatic tumors and cardiac allograft rejection. Correlative studies were also performed for the expression of NOTCH ligands, NOTCH receptors and PD-1 on various subsets of myeloid and lymphoid cells in tumor-infiltrating immune cells analyzed from primary human lung cancers. Results Mice with CD11c lineage-specific deletion of Notch ligand gene Dll1, but not Jag2, exhibited accelerated growth of lung and pancreatic tumors concomitant with decreased antigen-specific CD8+T-cell functions and effector-memory (Tem) differentiation. Increased IL-4 but decreased IFN-γ production and elevated populations of T-regulatory and myeloid-derived suppressor cells were observed in Dll1-ablated mice. Multivalent clustered DLL1-triggered Notch signaling overcame DC Dll1 deficiency and improved anti-tumor T-cell responses, whereas the pharmacological interference by monomeric soluble DLL1 construct suppressed the rejection of mouse tumors and cardiac allograft. Moreover, monomeric soluble JAG1 treatment reduced T-regulatory cells and improved anti-tumor immune responses by decreasing the expression of PD-1 on CD8+Tem cells. A significant correlation was observed between DC-expressed Jagged and Delta-like ligands with Tem-expressed PD-1 and Notch receptors, respectively, in human lung tumor-infiltrates. Conclusion Our data show the importance of specific expression of Notch ligands on DCs in the regulation of T-cell effector function. Thus, strategies incorporating selectively engineered Notch ligands could provide a novel approach of therapeutics for modulating immunity in various immunosuppressive conditions including cancer. Electronic supplementary material The online version of this article (10.1186/s40425-019-0566-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Elena E Tchekneva
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Wexner Medical Center and The James Comprehensive Cancer Center, 460 W 12th Ave, 484 BRT, Columbus, OH, 43210, USA
| | - Mounika U L Goruganthu
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Wexner Medical Center and The James Comprehensive Cancer Center, 460 W 12th Ave, 484 BRT, Columbus, OH, 43210, USA
| | - Roman V Uzhachenko
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, Meharry Medical College School of Medicine, 2005 Harold D. West Basic Sciences Building, 1023 21st Ave N, Nashville, 37208, TN, USA
| | - Portia L Thomas
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, Meharry Medical College School of Medicine, 2005 Harold D. West Basic Sciences Building, 1023 21st Ave N, Nashville, 37208, TN, USA.,Department of Microbiology, Immunology and Physiology, Meharry Medical College School of Medicine, Nashville, USA.,School of Graduate Studies and Research, Meharry Medical College, Nashville, TN, USA
| | - Anneliese Antonucci
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Wexner Medical Center and The James Comprehensive Cancer Center, 460 W 12th Ave, 484 BRT, Columbus, OH, 43210, USA
| | - Irina Chekneva
- Sechenov First Moscow State Medical University, Moscow, Russia
| | - Michael Koenig
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Wexner Medical Center and The James Comprehensive Cancer Center, 460 W 12th Ave, 484 BRT, Columbus, OH, 43210, USA
| | - Longzhu Piao
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Wexner Medical Center and The James Comprehensive Cancer Center, 460 W 12th Ave, 484 BRT, Columbus, OH, 43210, USA
| | - Anwari Akhter
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Wexner Medical Center and The James Comprehensive Cancer Center, 460 W 12th Ave, 484 BRT, Columbus, OH, 43210, USA
| | - Maria Teresa P de Aquino
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, Meharry Medical College School of Medicine, 2005 Harold D. West Basic Sciences Building, 1023 21st Ave N, Nashville, 37208, TN, USA
| | - Parvathi Ranganathan
- Division of Hematology, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Nicholas Long
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, USA
| | - Thomas Magliery
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, USA
| | - Anna Valujskikh
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, OH, USA
| | - Jason V Evans
- Department of Pathology, West Virginia University, Morgantown, WV, USA
| | - Rajeswara R Arasada
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Wexner Medical Center and The James Comprehensive Cancer Center, 460 W 12th Ave, 484 BRT, Columbus, OH, 43210, USA
| | - Pierre P Massion
- Department of Medicine, Vanderbilt University, Nashville, TN, USA
| | - David P Carbone
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Wexner Medical Center and The James Comprehensive Cancer Center, 460 W 12th Ave, 484 BRT, Columbus, OH, 43210, USA
| | - Anil Shanker
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, Meharry Medical College School of Medicine, 2005 Harold D. West Basic Sciences Building, 1023 21st Ave N, Nashville, 37208, TN, USA. .,School of Graduate Studies and Research, Meharry Medical College, Nashville, TN, USA. .,Host-Tumor Interactions Research Program, Vanderbilt-Ingram Comprehensive Cancer Center, Vanderbilt University, Nashville, TN, USA. .,Vanderbilt Institute for Infection, Immunology and Inflammation, Vanderbilt University, Nashville, TN, USA.
| | - Mikhail M Dikov
- Division of Medical Oncology, Department of Internal Medicine, The Ohio State University Wexner Medical Center and The James Comprehensive Cancer Center, 460 W 12th Ave, 484 BRT, Columbus, OH, 43210, USA.
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Uzhachenko RV, Singhal A, Goodwin SJ, Hofmeister WH, Shanker A. Abstract 5665: Physical crosstalk between CD8+T and natural killer cells elicits antitumor effector response. Cancer Res 2017. [DOI: 10.1158/1538-7445.am2017-5665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
The interaction between the innate and adaptive immune components is fundamental for an effective antitumor immunity. Our studies in murine solid tumor models showed that productive antitumor effector response relies on functional crosstalk between innate immune effectors—natural killers (NK), and adaptive immune effectors—cytolytic CD8+T lymphocytes. We found that this lymphocyte cooperativity between CD8+T and NK cells can prevent the development of antigen-escape tumor variants. In this study, we first investigated the role of physical contacts in during the functional crosstalk between CD8+T and NK cells. Since, studying dynamic lymphocyte interactions present extreme challenges, in this study, we engineered a 3D nanofiber matrix to provide lymphocytes a 3D culture environment for a controlled interaction. Confocal imaging showed that CD3/CD28-activated CD8+T cells (CD69+CD25+) formed multiple intercellular contacts with several naïve NK cells upon coculture, while naïve CD8+T cells made single or no contact with NK cells. In lymphocyte coculture (physical contact possible) we found that activated CD8+T and NK cells cross-regulate each other phenotype wherein NK cells polarize activated CD8+T cells towards “T central memory phenotype” and activated CD8+T lymphocytes induce acquisition of “effector/regulatory phenotype” by naïve NK cells. This cross-regulation of lymphocytes disappeared in trans-well system (no physical contact) indicating the necessity of cell-to-cell physical interaction during CD8+T—NK crosstalk. Notably, intercellular physical interaction led to cross regulation of mitoCa2+ oscillations in both activated CD8+T and NK cells. Inhibition of mitochondrial Ca2+ uptake or Na+/Ca2+ exchanger with Ru360 and CGP37157, respectively, mimicked observed alterations in both lymphocytes. Further, NK cells displayed increased oxidative signaling, Tyk2, Jak 1 and 3, Stat2 and Stat6 phosphorylation while inhibiting TCR- and various cytokine receptors-mediated signaling. In turn, NK cells selectively restrain IL-2 signaling in CD8+T cells by dampening activation-induced up-regulation of CD25, Stat5 phosphorylation, IL-2 synthesis and elevation in IL-2 uptake. These data underscore a novel mitochondrial Ca2+ transport-regulated acquisition of activation/regulatory phenotype by NK and CD8+T cells upon their interaction. Understanding the critical factors involved in this NK—CD8+T cells immunological synapse allowing their functional remodeling with the intact tissues in tumor settings will lead to novel strategies for effective cancer immunotherapies, with a potential of relapse-free survival in cancer patients.
Citation Format: Roman V. Uzhachenko, Ashutosh Singhal, Shawn J. Goodwin, William H. Hofmeister, Anil Shanker. Physical crosstalk between CD8+T and natural killer cells elicits antitumor effector response [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2017; 2017 Apr 1-5; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2017;77(13 Suppl):Abstract nr 5665. doi:10.1158/1538-7445.AM2017-5665
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Pellom ST, Dudimah DF, Thounaojam MC, Uzhachenko RV, Singhal A, Richmond A, Shanker A. Bortezomib augments lymphocyte stimulatory cytokine signaling in the tumor microenvironment to sustain CD8+T cell antitumor function. Oncotarget 2017; 8:8604-8621. [PMID: 28052005 PMCID: PMC5352426 DOI: 10.18632/oncotarget.14365] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 12/07/2016] [Indexed: 12/19/2022] Open
Abstract
Tumor-induced immune tolerance poses a major challenge for therapeutic interventions aimed to manage cancer. We explored approaches to overcome T-cell suppression in murine breast and kidney adenocarcinomas, and lung fibrosarcoma expressing immunogenic antigens. We observed that treatment with a reversible proteasome inhibitor bortezomib (1 mg/kg body weight) in tumor-bearing mice significantly enhanced the expression of lymphocyte-stimulatory cytokines IL-2, IL-12, and IL-15. Notably, bortezomib administration reduced pulmonary nodules of mammary adenocarcinoma 4T1.2 expressing hemagglutinin (HA) model antigen (4T1HA) in mice. Neutralization of IL-12 and IL-15 cytokines with a regimen of blocking antibodies pre- and post-adoptive transfer of low-avidity HA518-526-specific CD8+T-cells following intravenous injection of 4T1HA cells increased the number of pulmonary tumor nodules. This neutralization effect was counteracted by the tumor metastasis-suppressing action of bortezomib treatments. In bortezomib-treated 4T1HA tumor-bearing mice, CD4+T-cells showed increased IL-2 production, CD11c+ dendritic cells showed increased IL-12 and IL-15 production, and HA-specific activated CD8+T-cells showed enhanced expression of IFNγ, granzyme-B and transcription factor eomesodermin. We also noted a trend of increased expression of IL-2, IL-12 and IL-15 receptors as well as increased phosphorylation of STAT5 in tumor-infiltrating CD8+T-cells following bortezomib treatment. Furthermore, bortezomib-treated CD8+T-cells showed increased phosphorylation of mitogen-activated protein kinase p38, and Akt, which was abrogated by phosphatidylinositide 3-kinase (PI3K) inhibitor. These data support the therapeutic potential of bortezomib in conjunction with other immunotherapies to augment the strength of convergent signals from CD8+T-cell signaling molecules including TCR, cytokine receptors and downstream PI3K/Akt/STAT5 pathways to sustain CD8+T-cell effector function in the tumor microenvironment.
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Affiliation(s)
- Samuel T. Pellom
- Department of Biochemistry and Cancer Biology, School of Medicine, Meharry Medical College, Nashville, Tennessee, USA
- Department of Microbiology and Immunology, School of Medicine, Meharry Medical College, Nashville, Tennessee, USA
- School of Graduate Studies and Research, Meharry Medical College, Nashville, Tennessee, USA
| | - Duafalia F. Dudimah
- Department of Biochemistry and Cancer Biology, School of Medicine, Meharry Medical College, Nashville, Tennessee, USA
| | - Menaka C. Thounaojam
- Department of Biochemistry and Cancer Biology, School of Medicine, Meharry Medical College, Nashville, Tennessee, USA
| | - Roman V. Uzhachenko
- Department of Biochemistry and Cancer Biology, School of Medicine, Meharry Medical College, Nashville, Tennessee, USA
| | - Ashutosh Singhal
- Department of Biochemistry and Cancer Biology, School of Medicine, Meharry Medical College, Nashville, Tennessee, USA
| | - Ann Richmond
- Tennessee Valley Healthcare System, Nashville, Tennessee, USA
- Department of Veterans Affairs, Nashville, Tennessee, USA
- Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Host-Tumor Interactions Research Program, Vanderbilt-Ingram Comprehensive Cancer Center, Vanderbilt University, Nashville, Tennessee, USA
- Vanderbilt Center for Immunobiology, Vanderbilt University, Nashville, Tennessee, USA
- Vanderbilt Center for Translational and Clinical Immunology, Vanderbilt University, Nashville, Tennessee, USA
| | - Anil Shanker
- Department of Biochemistry and Cancer Biology, School of Medicine, Meharry Medical College, Nashville, Tennessee, USA
- School of Graduate Studies and Research, Meharry Medical College, Nashville, Tennessee, USA
- Host-Tumor Interactions Research Program, Vanderbilt-Ingram Comprehensive Cancer Center, Vanderbilt University, Nashville, Tennessee, USA
- Vanderbilt Center for Immunobiology, Vanderbilt University, Nashville, Tennessee, USA
- Vanderbilt Center for Translational and Clinical Immunology, Vanderbilt University, Nashville, Tennessee, USA
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Thounaojam MC, Dudimah DF, Pellom ST, Uzhachenko RV, Carbone DP, Dikov MM, Shanker A. Bortezomib enhances expression of effector molecules in anti-tumor CD8+ T lymphocytes by promoting Notch-nuclear factor-κB crosstalk. Oncotarget 2016; 6:32439-55. [PMID: 26431276 PMCID: PMC4741704 DOI: 10.18632/oncotarget.5857] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 09/09/2015] [Indexed: 01/08/2023] Open
Abstract
The immunosuppressive tumor microenvironment usurps host antitumor immunity by multiple mechanisms including interference with the Notch system, which is important for various metazoan cell fate decisions and hematopoietic cell differentiation and function. We observed that treatment with the proteasome inhibitor bortezomib in mice bearing various solid tumors resulted in an upregulated expression of various Notch signaling components in lymphoid tissues, thereby increasing CD8+T-lymphocyte IFNγ secretion and expression of effector molecules, perforin and granzyme B, as well as the T-box transcription factor eomesodermin. Bortezomib also neutralized TGFβ-mediated suppression of IFNγ and granzyme B expression in activated CD8+T-cells. Of note, bortezomib reversed tumor-induced downregulation of Notch receptors, Notch1 and Notch2, as well as increased the levels of cleaved Notch intracellular domain (NICD) and downstream targets Hes1 and Hey1 in tumor-draining CD8+T-cells. Moreover, bortezomib promoted CD8+T-cell nuclear factor-κB (NFκB) activity by increasing the total and phosphorylated levels of the IκB kinase and IκBα as well as the cytoplasmic and nuclear levels of phosphorylated p65. Even when we blocked NFκB activity by Bay-11-7082, or NICD cleavage by γ-secretase inhibitor, bortezomib significantly increased expression of Notch Hes1 and Hey1 genes as well as perforin, granzyme B and eomesodermin in activated CD8+T-cells. Data suggest that bortezomib can rescue tumor-induced dysfunction of CD8+T-cells by its intrinsic stimulatory effects promoting NICD-NFκB crosstalk. These findings provide novel insights on using bortezomib not only as an agent to sensitize tumors to cell death but also to provide lymphocyte-stimulatory effects, thereby overcoming immunosuppressive actions of tumor on anti-tumor T-cell functions.
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Affiliation(s)
- Menaka C Thounaojam
- Department of Biochemistry and Cancer Biology, School of Medicine, Meharry Medical College, Nashville, TN, USA
| | - Duafalia F Dudimah
- Department of Biochemistry and Cancer Biology, School of Medicine, Meharry Medical College, Nashville, TN, USA
| | - Samuel T Pellom
- Department of Biochemistry and Cancer Biology, School of Medicine, Meharry Medical College, Nashville, TN, USA.,Department of Microbiology and Immunology, School of Medicine, Meharry Medical College, Nashville, TN, USA.,School of Graduate Studies and Research, Meharry Medical College, Nashville, TN, USA
| | - Roman V Uzhachenko
- Department of Biochemistry and Cancer Biology, School of Medicine, Meharry Medical College, Nashville, TN, USA
| | - David P Carbone
- Department of Medicine, James Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Mikhail M Dikov
- Department of Medicine, James Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Anil Shanker
- Department of Biochemistry and Cancer Biology, School of Medicine, Meharry Medical College, Nashville, TN, USA.,School of Graduate Studies and Research, Meharry Medical College, Nashville, TN, USA.,Host-Tumor Interactions Research Program, Vanderbilt-Ingram Cancer Center, Vanderbilt University, Nashville, TN, USA
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Renrick AN, Thounaojam MC, Dudimah DF, Thomas P, Pellom ST, Uzhachenko RV, Shanker A. Abstract 4161: Bortezomib enhances expression of effector molecules in antitumor CD8+ T lymphocytes by modulating Notch-NF-kB-miR-155 crosstalk. Cancer Res 2016. [DOI: 10.1158/1538-7445.am2016-4161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
The immunosuppressive tumor microenvironment usurps host antitumor immunity by multiple mechanisms including interference with the Notch system, which is important for various metazoan cell fate decisions and hematopoietic cell differentiation and function. We observed that treatment with the proteasome inhibitor bortezomib in mice bearing various solid tumors resulted in an upregulated expression of various Notch signaling components in lymphoid tissues, thereby increasing CD8+T-lymphocyte IFNγ secretion and expression of effector molecules, perforin and granzyme B, as well as the T-box transcription factor eomesodermin. Bortezomib also neutralized TGFβ-mediated suppression of IFNγ and granzyme B expression in activated CD8+T-cells. Of note, bortezomib reversed tumor-induced downregulation of Notch receptors, Notch1 and Notch2, as well as increased the levels of cleaved Notch intracellular domain (NICD) and downstream targets Hes1 and Hey1 in tumor-draining CD8+T-cells. Moreover, bortezomib promoted CD8+T-cell nuclear factor-κB (NF-κB) activity by increasing the total and phosphorylated levels of the IκB kinase and IκBα as well as the cytoplasmic and nuclear levels of phosphorylated p65. Even when we blocked NFκB activity by Bay-11-7082, or NICD cleavage by γ-secretase inhibitor, bortezomib significantly increased expression of Notch Hes1 and Hey1 genes as well as perforin, granzyme B and eomesodermin in activated CD8+T-cells. Data suggest that bortezomib can rescue tumor-induced dysfunction of CD8+T-cells by its intrinsic stimulatory effects promoting NICD-NFκB crosstalk. We are also elucidating components of microRNA regulation affecting NICD-NFκB crosstalk. Our preliminary data suggest that miR-155 plays a role in bortezomib-induced regulation of T cell function. These findings provide novel insights on using bortezomib not only as an agent to sensitize tumors to cell death, but also to provide lymphocyte-stimulatory effects, thereby overcoming immunosuppressive actions of tumor on anti-tumor T-cell functions.
Citation Format: Ariana N. Renrick, Menaka C. Thounaojam, Duafalia F. Dudimah, Portia Thomas, Samuel T. Pellom, Roman V. Uzhachenko, Anil Shanker. Bortezomib enhances expression of effector molecules in antitumor CD8+ T lymphocytes by modulating Notch-NF-kB-miR-155 crosstalk. [abstract]. In: Proceedings of the 107th Annual Meeting of the American Association for Cancer Research; 2016 Apr 16-20; New Orleans, LA. Philadelphia (PA): AACR; Cancer Res 2016;76(14 Suppl):Abstract nr 4161.
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Pulliam SR, Uzhachenko RV, Adunyah SE, Shanker A. Common gamma chain cytokines in combinatorial immune strategies against cancer. Immunol Lett 2015; 169:61-72. [PMID: 26597610 DOI: 10.1016/j.imlet.2015.11.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 10/15/2015] [Accepted: 11/12/2015] [Indexed: 01/10/2023]
Abstract
Common γ chain (γC) cytokines, namely IL-2, IL-4, IL-7, IL-9, IL-15, and IL-21 are important for the proliferation, differentiation, and survival of lymphocytes that display antitumor activity, thus stimulating considerable interest for the use of cytokines in cancer immunotherapy. In this review, we will focus on the γC cytokines that demonstrate the greatest potential for immunotherapy, IL-2, IL-7, IL-15, and IL-21. We will briefly cover their biological function, potential applications in cancer therapy, and update on their use in combinatorial immune strategies for eradicating tumors and hematopoietic malignancies.
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Affiliation(s)
- Stephanie R Pulliam
- Department of Biochemistry and Cancer Biology, School of Medicine, Meharry Medical College, Nashville, TN 37208, USA; School of Graduate Studies and Research, Meharry Medical College, Nashville, TN 37208, USA
| | - Roman V Uzhachenko
- Department of Biochemistry and Cancer Biology, School of Medicine, Meharry Medical College, Nashville, TN 37208, USA
| | - Samuel E Adunyah
- Department of Biochemistry and Cancer Biology, School of Medicine, Meharry Medical College, Nashville, TN 37208, USA; School of Graduate Studies and Research, Meharry Medical College, Nashville, TN 37208, USA.
| | - Anil Shanker
- Department of Biochemistry and Cancer Biology, School of Medicine, Meharry Medical College, Nashville, TN 37208, USA; School of Graduate Studies and Research, Meharry Medical College, Nashville, TN 37208, USA; Host-Tumor Interactions Research Program, Vanderbilt-Ingram Cancer Center, Vanderbilt University, Nashville, TN 37232, USA.
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Biktasova AK, Dudimah DF, Uzhachenko RV, Park K, Akhter A, Arasada RR, Evans JV, Novitskiy SV, Tchekneva EE, Carbone DP, Shanker A, Dikov MM. Multivalent Forms of the Notch Ligand DLL-1 Enhance Antitumor T-cell Immunity in Lung Cancer and Improve Efficacy of EGFR-Targeted Therapy. Cancer Res 2015; 75:4728-41. [PMID: 26404003 DOI: 10.1158/0008-5472.can-14-1154] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Accepted: 08/12/2015] [Indexed: 11/16/2022]
Abstract
Activation of Notch signaling in hematopoietic cells by tumors contributes to immune escape. T-cell defects in tumors can be reversed by treating tumor-bearing mice with multivalent forms of the Notch receptor ligand DLL-1, but the immunologic correlates of this effect have not been elucidated. Here, we report mechanistic insights along with the efficacy of combinational treatments of multivalent DLL-1 with oncoprotein targeting drugs in preclinical mouse models of lung cancer. Systemic DLL-1 administration increased T-cell infiltration into tumors and elevated numbers of CD44(+)CD62L(+)CD8(+) memory T cells while decreasing the number of regulatory T cells and limiting tumor vascularization. This treatment was associated with upregulation of Notch and its ligands in tumor-infiltrating T cells enhanced expression of T-bet and phosphorylation of Stat1/2. Adoptive transfer of T cells from DLL1-treated tumor-bearing immunocompetent hosts into tumor-bearing SCID-NOD immunocompromised mice attenuated tumor growth and extended tumor-free survival in the recipients. When combined with the EGFR-targeted drug erlotinib, DLL-1 significantly improved progression-free survival by inducing robust tumor-specific T-cell immunity. In tissue culture, DLL1 induced proliferation of human peripheral T cells, but lacked proliferative or clonogenic effects on lung cancer cells. Our findings offer preclinical mechanistic support for the development of multivalent DLL1 to stimulate antitumor immunity.
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Affiliation(s)
- Asel K Biktasova
- Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Duafalia F Dudimah
- Department of Biochemistry and Cancer Biology, Meharry Medical College School of Medicine, Nashville, Tennessee
| | - Roman V Uzhachenko
- Department of Biochemistry and Cancer Biology, Meharry Medical College School of Medicine, Nashville, Tennessee
| | - Kyungho Park
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Anwari Akhter
- Division of Medical Oncology, Department of Internal Medicine, Ohio State University Medical Center, Columbus, Ohio
| | - Rajeswara R Arasada
- Division of Medical Oncology, Department of Internal Medicine, Ohio State University Medical Center, Columbus, Ohio
| | - Jason V Evans
- Division of Medical Oncology, Department of Internal Medicine, Ohio State University Medical Center, Columbus, Ohio
| | - Sergey V Novitskiy
- Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Elena E Tchekneva
- Division of Medical Oncology, Department of Internal Medicine, Ohio State University Medical Center, Columbus, Ohio
| | - David P Carbone
- Division of Medical Oncology, Department of Internal Medicine, Ohio State University Medical Center, Columbus, Ohio
| | - Anil Shanker
- Department of Biochemistry and Cancer Biology, Meharry Medical College School of Medicine, Nashville, Tennessee. Vanderbilt-Ingram Cancer Center, Nashville, Tennessee.
| | - Mikhail M Dikov
- Division of Medical Oncology, Department of Internal Medicine, Ohio State University Medical Center, Columbus, Ohio.
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Uzhachenko RV, Goodwin JS, Costa L, Terekhov A, Thounaojam MC, Hofmeister WH, Shanker A. Abstract 4059: Crosstalk between CD8+ T and NK cells: fine-tuning of antitumor immune response. Cancer Res 2015. [DOI: 10.1158/1538-7445.am2015-4059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Local tumor antigen-specific T cell-NK cell collaboration is indispensable for the elimination of tumor cells, including antigen-deficient tumor escape variants before metastasis. While mechanistic details are available for the innate instruction of the T cell responses, little is known for the adaptive control of NK cell activity. We observed in a mouse model of mastocytoma expressing a self tumor antigen P1A that effector CD8+ T cells provided a necessary “help” to dormant NK cells in eliciting their antitumor effector function. Bioluminescence imaging of mastocytoma tumors following adoptive transfer of P1A-specific T cells in RAG-/- and RAG-/-γc-/- mice showed that NK cell anti-tumor activity requires cytolytic T cells, whereas T cells can function independent of NK cells. In 2D and 3D co-culture systems, we observed that PMA/ionomycin-stimulated CD8+ T cells form multiple contacts with naïve NK lymphocytes. Data show that NK cells interacting with activated CD8+ T cells show an up-regulation of CD25 and CD69 expression mediated by intercellular contacts, and activation of NKG2D receptors and Stat2, Stat6, Jak1, Jak3, Tyk2, and PTEN signaling molecules with a decrease in the phosphorylation of Stat1, PKB/Akt, SAPK/JNK, p38. On the other hand, interacting NK cells down-regulate CD25 molecule expression on CD8+ T cells and promote differentiation of central memory CD44+CD62L+ T cells. CD8+ T cells display an elevation in the phosphorylation of Stat1 and down-regulation of Stat5 with stimulated PKB/Akt, Lck, mTOR, and p42/p44. Moreover, significant changes in the cytosolic and mitochondrial Ca2+, production of mitochondrial ROS, mitochondrial membrane potential, mitochondrial permeability transition pore, and synthesis of nitric oxide and non-protein thiols (mostly, reduced glutathion) were observed in a reciprocal T cell-NK cell interaction. These results highlight the importance of mitochondrial activity in the re-modeling of activation signaling and memory differentiation of interacting CD8 T cells and NK cells. These results will help refine cancer immunotherapeutic strategies.
Citation Format: Roman V. Uzhachenko, J Shawn Goodwin, Lino Costa, Alexander Terekhov, Menaka C. Thounaojam, William H. Hofmeister, Anil Shanker. Crosstalk between CD8+ T and NK cells: fine-tuning of antitumor immune response. [abstract]. In: Proceedings of the 106th Annual Meeting of the American Association for Cancer Research; 2015 Apr 18-22; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Res 2015;75(15 Suppl):Abstract nr 4059. doi:10.1158/1538-7445.AM2015-4059
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Affiliation(s)
| | | | - Lino Costa
- 2University of Tennessee Space Institute, Tullahoma, TN
| | | | | | | | - Anil Shanker
- 3Meharry Medical College SOM/ Vanderbilt Ingram Cancer Center, Nashville, TN
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Dudimah DF, Pellom ST, Uzhachenko RV, Carbone DP, Dikov MM, Shanker A. Abstract 3642: Cancer therapy by resuscitating Notch immune surveillance. Cancer Res 2014. [DOI: 10.1158/1538-7445.am2014-3642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
The immunosuppressive tumor microenvironment perturbs numerous immune regulatory networks and usurps host anti-tumor immunity. We discovered that tumor interferes with host hematopoietic Notch system in lung cancer patients. The resultant decrease in immune Notch signaling could be a major causative link in the inadequate induction of anti-tumor immunity. Interestingly, we found that tumor-induced decrease in immune Notch in various mouse solid tumor models could be restored therapeutically by the following two agents. Administration of a novel Delta-like ligand 1 (DLL1) multivalent cluster and the FDA-approved proteasome inhibitor drug bortezomib - which also sensitizes tumors to death signals - could activate Notch 1 signaling in lymphoid cells of tumor-bearing mice without increasing tumor cell proliferation or clonogenicity. Systemic activation of DLL1-Notch signaling could attenuate tumor vascularization as well as increase T cell infiltration in tumor, decrease proportion of regulatory T cells and enhance antitumor T cell function and memory in multiple mouse tumor models. New data also show that bortezomib affects the expression of notch receptors and ligands differentially in lymphocytes and in a wide range of solid tumor cells. Moreover, bortezomib administration increased the expression of Notch target genes Hes 1 and Hey 1 in thymus, lymph node, and spleen, as well as decreased the proportion of regulatory T cells and enhanced T cell production of IFN-γ in tumor-bearing mice. Results indicate that bortezomib-induced activation of Notch target genes Hes 1 and Hey 1 is through its inhibition of NFkB while its activation of another Notch target gene Deltex 1 is mediated via PI3K. The findings suggest a potential synergistic action of bortezomib and DLL1 activation of Notch signaling. The potential of modulating anti-tumor Notch signaling by the prototypic DLL1 cluster in combination with bortezomib presents exciting opportunities to uncover multi-pronged immune stimulatory regimens. Therapeutic restoration of immune Notch signaling could provide effective treatment and recurrence-free survival in cancer patients by breaking tumor resistance, enhancing immune surveillance, and sustaining robust anti-tumor immunity.
Citation Format: Duafalia F. Dudimah, Samuel T. Pellom Jr., Roman V. Uzhachenko, David P. Carbone, Mikhail M. Dikov, Anil Shanker. Cancer therapy by resuscitating Notch immune surveillance. [abstract]. In: Proceedings of the 105th Annual Meeting of the American Association for Cancer Research; 2014 Apr 5-9; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2014;74(19 Suppl):Abstract nr 3642. doi:10.1158/1538-7445.AM2014-3642
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Affiliation(s)
| | | | | | | | | | - Anil Shanker
- 1Meharry Medical College School of Medicine, Nashville, TN
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Shanker A, Dudimah DF, Uzhachenko RV, Biktasova AK, Carbone DP, Dikov MM. Cancer therapy by restoration of immune Notch. J Immunother Cancer 2013. [PMCID: PMC3991176 DOI: 10.1186/2051-1426-1-s1-p88] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Dudimah DF, Uzhachenko RV, Pellom ST, Biktasova AK, Dikov MM, Carbone DP, Shanker A. Abstract 3983: Resuscitating immune surveillance in cancer. Cancer Res 2013. [DOI: 10.1158/1538-7445.am2013-3983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Cancer growth interferes with the Notch signaling that plays diverse roles in lymphocyte commitment and differentiation, oncogenesis, and peripheral immune responses. Our studies show that the stimulation of hematopoietic Notch signaling following administration of a prototypic therapeutic agent clustered multivalent Delta-like Notch ligand (DLL1), in mouse lung tumor models can correct tumor-induced defects in lymphocyte differentiation and improve antitumor lymphocyte responses, without increasing tumor cell proliferation. Moreover, since the Notch signaling complex is inactivated via the proteasome, its inhibitor bortezomib, amongst its other potential effects, may sustain DLL1-mediated pharmacological activation of the Notch signaling. Our data demonstrate that the proteasome inhibitor bortezomib can selectively sensitize solid tumors to apoptotic signals by upregulating death receptors on tumor cells and amplifying caspase-8 activation in the extrinsic cell death pathway, without any adverse effect on the antigen-specific T cell proliferative or cytolytic functions in an in vivo setting. In the current study, we investigated the effects of bortezomib and DLL1 on Notch receptor/ligand system and its downstream signaling network with an aim to enhance cancer immunotherapy. Results show that bortezomib affects the expression of notch receptors and ligands differentially in lymphocytes and in a wide range of solid tumor cells: 4T1, PyMT, MDA-MB-231, C26, LLC, D459, and Renca-HA. Specifically, the expression of Notch 4 receptor and its ligand Jagged 1 was reduced in bortezomib-treated tumor cells. In addition, bortezomib treatment of tumor cells modulated Notch downstream targets Hes1, Hes3, Hey1, Deltex1 and Deltex3, which act as transcriptional regulators of tissue-specific differentiation. bortezomib also modulated the phosphorylation of Erk1/2 MAP kinases and AKT suggesting that bortezomib may mediate its effects through downstream phosphorylation of Erk targets, such as STATs and NFkB, or PI3K, which are key players in signaling cross-talk and intersect with Notch signaling. Noreover, bortezomib administration increased the expression of Notch target Hes1 in thymus, lymph node and spleen of tumor-bearing mice, suggesting a potential synergistic action of bortezomib and DLL1 activation of Notch signaling. These results suggest that tumor cell-death sensitizing bortezomib and pharmacological DLL1 cluster activating immunostimulatory Notch in tumor-bearing host follow common signal transduction pathways and can synergize in antitumor activity. These findings offer a novel three-pronged combinatorial therapeutic approach of immunostimulatory Notch ligand DLL1 and bortezomib to abrogate the immunosuppressive circuitries operating in the tumor microenvironment with a potential to reduce tumor burden and resuscitate tumor-specific immunity.
Citation Format: Duafalia F. Dudimah, Roman V. Uzhachenko, Samuel T. Pellom, Asel K. Biktasova, Mikhail M. Dikov, David P. Carbone, Anil Shanker. Resuscitating immune surveillance in cancer. [abstract]. In: Proceedings of the 104th Annual Meeting of the American Association for Cancer Research; 2013 Apr 6-10; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2013;73(8 Suppl):Abstract nr 3983. doi:10.1158/1538-7445.AM2013-3983
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Affiliation(s)
| | | | | | | | | | | | - Anil Shanker
- 3Meharry Medical College, Vanderbilt Ingram Cancer Center, Nashville, TN
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Dudimah DF, Uzhachenko RV, Pellom ST, Biktasova AK, Dikov MM, Carbone DP, Shanker A. Abstract B93: Resuscitating cancer immunosurveillance by combining Notch 1 and death receptor-activating therapy. Cancer Epidemiol Biomarkers Prev 2012. [DOI: 10.1158/1055-9965.disp12-b93] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Abstract
Notch signaling plays diverse roles in lymphocyte differentiation and tumor angiogenesis. Our recent findings implicate the role of the Notch 1 pathway in promoting antitumor immune effector functions. We explored the effects of Notch 1 stimulation on T cell immunity and its potential pharmacological activation using multivalent Delta-like Notch 1 ligand DLL1 cluster in combination with the proteasome inhibitor bortezomib, which could stabilize Notch 1 activation. Bortezomib was found to selectively sensitize solid tumor cells to apoptosis by upregulating death receptors on tumor cells and amplifying caspase-8 activation in the death-inducing signaling complex. This resulted in reduced pulmonary nodules of injected tumor cells in mice. Additionally, in an in vivo tumor setting, no adverse effects of bortezomib were observed on the antigen-specific T cell proliferative or cytolytic functions. But no long-term survival benefits could be obtained, possibly due to the immunosuppressive effects of the tumor. In our more recent studies, we observed that DLL1-specific immune Notch activation could enhance antitumor T cell immunity by overcoming tumor-associated immunosuppression in D459 and Lewis lung carcinoma models. The results offer a novel combinatorial approach to abrogate the immunosuppressive circuitries operating in the tumor microenvironment with a potential to reduce tumor burden and resuscitate tumor-specific immunity. This work has important translational implications for improving immunotherapy in cancer patients, and may provide insights into new strategies for cancer prevention.
Citation Format: Duafalia F. Dudimah, Roman V. Uzhachenko, Samuel T. Pellom, Jr., Asel K. Biktasova, Mikhail M. Dikov, David P. Carbone, Anil Shanker. Resuscitating cancer immunosurveillance by combining Notch 1 and death receptor-activating therapy. [abstract]. In: Proceedings of the Fifth AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved; 2012 Oct 27-30; San Diego, CA. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2012;21(10 Suppl):Abstract nr B93.
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Bazhan SI, Karpenko LI, Lebedev LR, Uzhachenko RV, Belavin PA, Eroshkin AM, Ilyichev AA. A synergistic effect of a combined bivalent DNA–protein anti-HIV-1 vaccine containing multiple T- and B-cell epitopes of HIV-1 proteins. Mol Immunol 2008; 45:661-9. [PMID: 17869341 DOI: 10.1016/j.molimm.2007.07.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2007] [Revised: 07/09/2007] [Accepted: 07/10/2007] [Indexed: 10/22/2022]
Abstract
Immunogenic properties of the combined vaccine CombiHIVvac, comprising polyepitope HIV-1 immunogens, one being the artificial polyepitope protein TBI, containing the T- and B-cell epitopes from Env and Gag proteins, and the DNA vaccine construct pcDNA-TCI coding for the artificial protein TCI, carrying over 80 T-cell epitopes (both CD4+ CTL and CD8+ Th) from Env, Gag, Pol, and Nef proteins, are studied in this work. The data reported demonstrate clearly that a combination of two B- and T-cell immunogens (TBI and TCI) in one construct results in a synergistic increase in the antibody response to both TBI protein and the proteins from HIV-1 lysate. The level of antibodies induced by immunization with the constructs containing either immunogen alone (TBI protein or the plasmid pcDNA-TCI) was significantly lower as compared to that induced by the combined vaccine. The analysis performed suggests that the presence of CD4+ T-helper epitopes, which can be presented by MHC class II, in the protein TCI may be the main reason underlying the increased synthesis of antibodies to TBI protein due to a CD4-mediated stimulation of B-cell proliferation and differentiation.
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Affiliation(s)
- Sergei I Bazhan
- Theoretical Department, State Research Center of Virology and Biotechnology Vector, 630559 Koltsovo, Novosibirsk Region, Russia.
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Karpenko LI, Bazhan SI, Eroshkin AM, Lebedev LR, Uzhachenko RV, Nekrasova NA, Plyasunova OA, Belavin PA, Seregin SV, Danilyuk NK, Danilenko ED, Zaitsev BN, Masicheva VI, Ilyichev AA, Sandakhchiev LS. CombiHIV vac vaccine which contains polypepitope B-and T-cell immunogens of HIV-1. DOKL BIOCHEM BIOPHYS 2007; 413:65-7. [PMID: 17546955 DOI: 10.1134/s160767290702007x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- L I Karpenko
- Vector State Scientific Center of Virology and Biotechnology, Kol'tsovo, Novosibirsk oblast, 630559, Russia
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Karpenko LI, Ilyichev AA, Eroshkin AM, Lebedev LR, Uzhachenko RV, Nekrasova NA, Plyasunova OA, Belavin PA, Seregin SV, Danilyuk NK, Zaitsev BN, Danilenko ED, Masycheva VI, Bazhan SI. Combined virus-like particle-based polyepitope DNA/protein HIV-1 vaccine design, immunogenicity and toxicity studies. Vaccine 2007; 25:4312-23. [PMID: 17418918 DOI: 10.1016/j.vaccine.2007.02.058] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2006] [Revised: 02/13/2007] [Accepted: 02/20/2007] [Indexed: 10/23/2022]
Abstract
We have previously described designing of polyepitope immunogens TBI and TCI, to stimulate the humoral and cellular immune responses to HIV-1. Here, immunogens TBI and TCI were used to create new vaccine construct named CombiHIVvac (Combined HIV-1 vaccine). CombiHIVvac is a virus-like particles (VLP) containing the DNA vaccine pcDNA-TCI as a core encapsulated within a spermidine-polyglucin-TBI conjugate. The immunogenic and toxic properties of the candidate vaccine CombiHIVvac have been studied. CombiHIVvac induces a strong humoral and CTL responses in mice; the antibodies are highly specific and are able to neutralize HIV-1 in vitro. Preclinical study demonstrated that CombiHIVvac does not cause long-term changes in physiological, biochemical and morphological parameters in immunized animals and thus can be recommended for clinical trials.
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MESH Headings
- AIDS Vaccines/adverse effects
- AIDS Vaccines/chemistry
- AIDS Vaccines/immunology
- Animals
- Blotting, Western
- Cells, Cultured
- Cytokines/biosynthesis
- Enzyme-Linked Immunosorbent Assay
- Epitopes/genetics
- Epitopes/immunology
- HIV Antibodies/blood
- HIV-1/immunology
- Humans
- Lymphocytes/immunology
- Mice
- Mice, Inbred BALB C
- Models, Animal
- Neutralization Tests
- Vaccines, DNA/adverse effects
- Vaccines, DNA/chemistry
- Vaccines, DNA/immunology
- Vaccines, Virosome/adverse effects
- Vaccines, Virosome/chemistry
- Vaccines, Virosome/immunology
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Affiliation(s)
- Larisa I Karpenko
- State Research Center of Virology and Biotechnology Vector, 630559 Koltsovo, Novosibirsk region, Russia.
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Maslov LN, Lasukova OV, Krylatov AV, Uzhachenko RV, Pertwee R. Selective cannabinoid receptor agonist HU-210 decreases pump function of isolated perfused heart: role of cAMP and cGMP. Bull Exp Biol Med 2005; 138:550-3. [PMID: 16134810 DOI: 10.1007/s10517-005-0123-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The rate and strength of heart contractions decreased after 10-min perfusion of rat myocardium with Krebs-Henseleit solution containing a selective cannabinoid receptor agonist HU-210 in a final concentration of 10 nM. HU-210 completely blocked the positive inotropic and chronotropic effect of beta-adrenoceptor agonist isoproterenol, decreased the basal level of cAMP, and abolished the isoproterenol-induced increase in myocardial cAMP concentration. cGMP concentration remained unchanged under these conditions. The decrease in myocardial cAMP concentration after activation of cannabinoid receptors did not correlate with changes in the strength and rate of heart contractions. Our results suggest that the negative inotropic and chronotropic effects of HU-210 are not associated with decreased cAMP concentration in the myocardium.
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Krylatov AV, Uzhachenko RV, Maslov LN, Ugdyzhekova DS, Bernatskaia NA, Pertwee R, Stefano GB, Makriyannis A. [Anandamide and R-(+)-methanandamide prevent development of ischemic and reperfusion arrhythmia in rats by stimulation of CB2-receptors]. Eksp Klin Farmakol 2002; 65:6-9. [PMID: 12227101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
It has been found that prior intravenous administration of the endocannabinoid anandamide (10 mg/kg) or its synthetic analogue R-(+)-methanadamide (5 mg/kg) prevents a development of ischemic and reperfusion arrhythmias in rats. The prior injection of the CB1 receptor antagonist, SR 141716A (3 mg/kg), did no affect the antiarrhythmic action of both cannabinoids. Pretreatment with the CB2 receptor antagonist, SR 144528 (1 mg/kg), completely abolished antiarrhythmic effect of anandamide and R-(+)-methanandamide. Both CB antagonist had no effect on the arrhythmias itself. Pretreatment with the NO-synthase inhibitor, L-NAME (50 mg/kg), had no effect on the antiarrhythmic action of cannabinoids. We therefore conclude that CB2 receptor stimulation increases the heart tolerance to ischemic and reperfusion arrhythmias.
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Affiliation(s)
- A V Krylatov
- Laboratory of Experimental Cardiology, Institute of Cardiology, Kyevskaya 111, 634050 Tomsk, Russia
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Krylatov AV, Uzhachenko RV, Maslov LN, Bernatskaya NA, Makriyannis A, Mechoulam R, Pertwee RG, Sal'nikova OM, Stefano JB, Lishmanov Y. Endogenous cannabinoids improve myocardial resistance to arrhythmogenic effects of coronary occlusion and reperfusion: a possible mechanism. Bull Exp Biol Med 2002; 133:122-4. [PMID: 12428277 DOI: 10.1023/a:1015574100494] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Stimulation of cannabinoid receptors with endogenous cannabinoid anandamide and its enzyme-resistant analogue R-(+)-methanandamide improved cardiac resistance to arrhythmias induced by coronary occlusion and reperfusion. This antiarrhythmic effect was not associated with activation of NO synthase, since pretreatment with NG-nitro-L-arginine methyl ester had no effect on the incidence of ischemia/reperfusion-induced arrhythmias. Blockade of ATP-dependent K+ channels with glybenclamide did not abolish the antiarrhythmic effect of R-(+)-methanandamide. Antiarrhythmic activity of endogenous cannabinoids is probably associated with their direct effects on the myocardium.
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Affiliation(s)
- A V Krylatov
- Institute of Cardiology, Tomsk Research Center, Siberian Division of the Russian Academy of Medical Sciences
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