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He Y, Wang HX, Liu M, Yang J, Sun ZL. [Screening of small molecule inhibitors of IL-15Rα using molecular docking and surface plasmon resonance technology]. Sheng Li Xue Bao 2023; 75:623-628. [PMID: 37909133] [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: 11/02/2023]
Abstract
The study aims to explore the active molecules of traditional Chinese medicine that specifically bind to interleukin-15 receptor α (IL-15Rα) using molecular docking and surface plasmon resonance (SPR) technology. AutoDock molecular docking software was used to perform simulated docking of more than 3 000 compounds from 48 traditional Chinese medicines at IL-15Rα and screen the specific binding compounds. Then Biocore T200 biomolecular interaction analysis system of SPR was used to confirm the binding specificity of the selected target compounds. Finally, the biological effects of the target compounds on IL-15Rα were verified by cell biological experiments. The results showed that neoprzewaquinone A (Neo) possessed the highest specific binding affinity among the active molecules from traditional Chinese medicine, and the dissociation constant (KD) value was (0.62 ± 0.20) µmol/L. The results of cell experiment showed that Neo significantly inhibited the proliferation of Mo7e cells induced by IL-15, and the IC50 was 1.075 µmol/L, approximately 1/120 of the IC50 of Cefazolin (IL-15 specific antagonist). These results suggest that Neo is a specific inhibitor of IL-15Rα and may be a potential active drug for the treatment of diseases related to the dysfunction of the IL-15Rα signaling.
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Affiliation(s)
- Yi He
- Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing 100088, China
| | - Hai-Xia Wang
- Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing 100088, China
| | - Min Liu
- Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing 100088, China
| | - Jian Yang
- Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing 100088, China
| | - Zuo-Li Sun
- Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing 100088, China.
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2
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Kheshti AMS, Hajizadeh F, Barshidi A, Rashidi B, Ebrahimi F, Bahmanpour S, Karpisheh V, Noukabadi FK, Kiani FK, Hassannia H, Atyabi F, Kiaie SH, Kashanchi F, Navashenaq JG, Mohammadi H, Bagherifar R, Jafari R, Zolbanin NM, Jadidi-Niaragh F. Combination Cancer Immunotherapy with Dendritic Cell Vaccine and Nanoparticles Loaded with Interleukin-15 and Anti-beta-catenin siRNA Significantly Inhibits Cancer Growth and Induces Anti-Tumor Immune Response. Pharm Res 2022; 39:353-367. [PMID: 35166995 DOI: 10.1007/s11095-022-03169-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 01/13/2022] [Indexed: 12/14/2022]
Abstract
PURPOSE The invention and application of new immunotherapeutic methods can compensate for the inefficiency of conventional cancer treatment approaches, partly due to the inhibitory microenvironment of the tumor. In this study, we tried to inhibit the growth of cancer cells and induce anti-tumor immune responses by silencing the expression of the β-catenin in the tumor microenvironment and transmitting interleukin (IL)-15 cytokine to provide optimal conditions for the dendritic cell (DC) vaccine. METHODS For this purpose, we used folic acid (FA)-conjugated SPION-carboxymethyl dextran (CMD) chitosan (C) nanoparticles (NPs) to deliver anti-β-catenin siRNA and IL-15 to cancer cells. RESULTS The results showed that the codelivery of β-catenin siRNA and IL-15 significantly reduced the growth of cancer cells and increased the immune response. The treatment also considerably stimulated the performance of the DC vaccine in triggering anti-tumor immunity, which inhibited tumor development and increased survival in mice in two different cancer models. CONCLUSIONS These findings suggest that the use of new nanocarriers such as SPION-C-CMD-FA could be an effective way to use as a novel combination therapy consisting of β-catenin siRNA, IL-15, and DC vaccine to treat cancer.
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MESH Headings
- Animals
- Antineoplastic Agents/administration & dosage
- Antineoplastic Agents/chemistry
- Cancer Vaccines/administration & dosage
- Cancer Vaccines/immunology
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Dendritic Cells/immunology
- Dendritic Cells/transplantation
- Drug Carriers
- Drug Compounding
- Female
- Gene Expression Regulation, Neoplastic
- Interleukin-15/administration & dosage
- Interleukin-15/chemistry
- Lymphocytes, Tumor-Infiltrating/immunology
- Magnetic Iron Oxide Nanoparticles
- Melanoma, Experimental/genetics
- Melanoma, Experimental/immunology
- Melanoma, Experimental/pathology
- Melanoma, Experimental/therapy
- Mice, Inbred BALB C
- RNA, Small Interfering/administration & dosage
- RNA, Small Interfering/genetics
- RNAi Therapeutics
- Skin Neoplasms/genetics
- Skin Neoplasms/immunology
- Skin Neoplasms/pathology
- Skin Neoplasms/therapy
- Tumor Burden/drug effects
- Tumor Microenvironment
- beta Catenin/genetics
- Mice
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Affiliation(s)
| | - Farnaz Hajizadeh
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Asal Barshidi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Bentolhoda Rashidi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farbod Ebrahimi
- Nanoparticle Process Technology, Faculty of Engineering, University of Duisburg-Essen, Duisburg, Germany
| | - Simin Bahmanpour
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Vahid Karpisheh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Fariba Karoon Kiani
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hadi Hassannia
- Immunogenetic Research Center, Faculty of Medicine and Amol Faculty of Paramedical Sciences, Mazandaran University of Medical Sciences, Sari, Iran
| | - Fatemeh Atyabi
- Nanotechnology Research Centre, Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Hossein Kiaie
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Nano Drug Delivery Research Center, Kermanshah University of Medical Sciences, Kermanshah, 6715847141, Iran
| | - Fatah Kashanchi
- Laboratory of Molecular Virology, School of Systems Biology, George Mason University, Manassas, Virginia, USA
| | | | - Hamed Mohammadi
- Non-communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Rafieh Bagherifar
- Nano Drug Delivery Research Center, Kermanshah University of Medical Sciences, Kermanshah, 6715847141, Iran
| | - Reza Jafari
- Nephrology and Kidney Transplant Research Center, Clinical Research Institute, Urmia University of Medical Sciences, Urmia, Iran
- Hematology, Immune Cell Therapy, and Stem Cell Transplantation Research Center, Clinical Research Institute, Urmia University of Medical Sciences, Urmia, Iran
| | - Naime Majidi Zolbanin
- Hematology, Immune Cell Therapy, and Stem Cell Transplantation Research Center, Clinical Research Institute, Urmia University of Medical Sciences, Urmia, Iran.
- Experimental and Applied Pharmaceutical Research Center, Urmia University of Medical Sciences, Urmia, Iran.
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Urmia University of Medical Sciences, Urmia, Iran.
| | - Farhad Jadidi-Niaragh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
- Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
- Research Center for Integrative Medicine in Aging, Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran.
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3
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Bosch NC, Martin LM, Voskens CJ, Berking C, Seliger B, Schuler G, Schaft N, Dörrie J. A Chimeric IL-15/IL-15Rα Molecule Expressed on NFκB-Activated Dendritic Cells Supports Their Capability to Activate Natural Killer Cells. Int J Mol Sci 2021; 22:ijms221910227. [PMID: 34638566 PMCID: PMC8508776 DOI: 10.3390/ijms221910227] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/02/2021] [Accepted: 09/18/2021] [Indexed: 12/31/2022] Open
Abstract
Natural killer (NK) cells, members of the innate immune system, play an important role in the rejection of HLA class I negative tumor cells. Hence, a therapeutic vaccine, which can activate NK cells in addition to cells of the adaptive immune system might induce a more comprehensive cellular response, which could lead to increased tumor elimination. Dendritic cells (DCs) are capable of activating and expanding NK cells, especially when the NFκB pathway is activated in the DCs thereby leading to the secretion of the cytokine IL-12. Another prominent NK cell activator is IL-15, which can be bound by the IL-15 receptor alpha-chain (IL-15Rα) to be transpresented to the NK cells. However, monocyte-derived DCs do neither secrete IL-15, nor express the IL-15Rα. Hence, we designed a chimeric protein consisting of IL-15 and the IL-15Rα. Upon mRNA electroporation, the fusion protein was detectable on the surface of the DCs, and increased the potential of NFκB-activated, IL-12-producing DC to activate NK cells in an autologous cell culture system with ex vivo-generated cells from healthy donors. These data show that a chimeric IL-15/IL-15Rα molecule can be expressed by monocyte-derived DCs, is trafficked to the cell surface, and is functional regarding the activation of NK cells. These data represent an initial proof-of-concept for an additional possibility of further improving cellular DC-based immunotherapies of cancer.
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Affiliation(s)
- Naomi C. Bosch
- Institute of Medical Immunology, Martin-Luther University Halle-Wittenberg, 06112 Halle (Saale), Germany; (N.C.B.); (B.S.)
- Department of Dermatology, Universitätsklinikum Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, 91054 Erlangen, Germany; (L.-M.M.); (C.J.V.); (C.B.); (G.S.); (N.S.)
- Comprehensive Cancer Center Erlangen–EMN, NCT WERA, 91054 Erlangen, Germany
| | - Lena-Marie Martin
- Department of Dermatology, Universitätsklinikum Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, 91054 Erlangen, Germany; (L.-M.M.); (C.J.V.); (C.B.); (G.S.); (N.S.)
| | - Caroline J. Voskens
- Department of Dermatology, Universitätsklinikum Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, 91054 Erlangen, Germany; (L.-M.M.); (C.J.V.); (C.B.); (G.S.); (N.S.)
- Comprehensive Cancer Center Erlangen–EMN, NCT WERA, 91054 Erlangen, Germany
- Deutsches Zentrum Immuntherapie (DZI), 91054 Erlangen, Germany
| | - Carola Berking
- Department of Dermatology, Universitätsklinikum Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, 91054 Erlangen, Germany; (L.-M.M.); (C.J.V.); (C.B.); (G.S.); (N.S.)
- Comprehensive Cancer Center Erlangen–EMN, NCT WERA, 91054 Erlangen, Germany
- Deutsches Zentrum Immuntherapie (DZI), 91054 Erlangen, Germany
| | - Barbara Seliger
- Institute of Medical Immunology, Martin-Luther University Halle-Wittenberg, 06112 Halle (Saale), Germany; (N.C.B.); (B.S.)
- Fraunhofer Institute for Cell Therapy and Immunology (IZI), 04103 Leipzig, Germany
| | - Gerold Schuler
- Department of Dermatology, Universitätsklinikum Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, 91054 Erlangen, Germany; (L.-M.M.); (C.J.V.); (C.B.); (G.S.); (N.S.)
| | - Niels Schaft
- Department of Dermatology, Universitätsklinikum Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, 91054 Erlangen, Germany; (L.-M.M.); (C.J.V.); (C.B.); (G.S.); (N.S.)
| | - Jan Dörrie
- Department of Dermatology, Universitätsklinikum Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, 91054 Erlangen, Germany; (L.-M.M.); (C.J.V.); (C.B.); (G.S.); (N.S.)
- Correspondence: ; Tel.: +49-9131-8531127
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4
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Dijkstra JM. A method for making alignments of related protein sequences that share very little similarity; shark interleukin 2 as an example. Immunogenetics 2021; 73:35-51. [PMID: 33512550 DOI: 10.1007/s00251-020-01191-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Accepted: 11/11/2020] [Indexed: 02/07/2023]
Abstract
An optimized alignment of related protein sequences helps to see their important shared features and to deduce their phylogenetic relationships. At low levels of sequence similarity, there are no suitable computer programs for making the best possible alignment. This review summarizes some guidelines for how in such instances, nevertheless, insightful alignments can be made. The method involves, basically, the understanding of molecular family features at both the protein and intron-exon level, and the collection of many related sequences so that gradual differences may be observed. The method is exemplified by identifying and aligning interleukin 2 (IL-2) and related sequences in Elasmobranchii (sharks/rays) and coelacanth, as other authors have expressed difficulty with their identification. From the point of general immunology, it is interesting that the unusual long "leader" sequence of IL-15, already known in other species, is even more impressively conserved in cartilaginous fish. Furthermore, sequence comparisons suggest that IL-2 in cartilaginous fish has lost its ability to bind an IL-2Rα/15Rα receptor chain, which would prohibit the existence of a mechanism for regulatory T cell regulation identical to mammals.
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Affiliation(s)
- Johannes M Dijkstra
- Institute for Comprehensive Medical Science, Fujita Health University, Dengaku-gakubo 1-98Toyoake-shi, Aichi-ken, 470-1192, Japan.
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5
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Luo Z, Liu Z, Liang Z, Pan J, Xu J, Dong J, Bai Y, Deng H, Wei S. Injectable Porous Microchips with Oxygen Reservoirs and an Immune-Niche Enhance the Efficacy of CAR T Cell Therapy in Solid Tumors. ACS Appl Mater Interfaces 2020; 12:56712-56722. [PMID: 33306365 DOI: 10.1021/acsami.0c15239] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Chimeric antigen receptor (CAR) T cell therapy is a promising new class of hematological malignancy treatment. However, CAR T cells are rarely effective in solid tumor therapy mainly because of the poor trafficking of injected CAR T cells to the tumor site and their limited infiltration and survival in the immunosuppressive and hypoxic tumor microenvironment (TME). Here, we built an injectable immune-microchip (i-G/MC) system to intratumorally deliver CAR T cells and enhance their therapeutic efficacy in solid tumors. In the i-G/MC, oxygen carriers (Hemo) are released to disrupt the TME, and then, CAR T cells migrate from IL-15-laden i-G/MCs into the tumor stroma. The results indicate that Hemo and IL-15 synergistically enhanced CAR T cell survival and expansion under hypoxic conditions, promoting the potency and memory of CAR T cells. This i-G/MC not only serves as a cell carrier but also builds an immune-niche, enhancing the efficacy of CAR T cells.
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Affiliation(s)
- Zuyuan Luo
- Central Laboratory, and Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Peking University; Peking University Department of Cell Biology and Stem Cell Research Center, School of Basic Medical Sciences, Center for Molecular and Translational Medicine, Peking University Health Science Center, Beijing 100081, P.R. China
- Laboratory for Biomaterials and Regenerative Medicine, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, P.R. China
| | - Zhen Liu
- Central Laboratory, and Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Peking University; Peking University Department of Cell Biology and Stem Cell Research Center, School of Basic Medical Sciences, Center for Molecular and Translational Medicine, Peking University Health Science Center, Beijing 100081, P.R. China
| | - Zhen Liang
- Central Laboratory, and Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Peking University; Peking University Department of Cell Biology and Stem Cell Research Center, School of Basic Medical Sciences, Center for Molecular and Translational Medicine, Peking University Health Science Center, Beijing 100081, P.R. China
| | - Jijia Pan
- Laboratory for Biomaterials and Regenerative Medicine, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, P.R. China
| | - Jun Xu
- Central Laboratory, and Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Peking University; Peking University Department of Cell Biology and Stem Cell Research Center, School of Basic Medical Sciences, Center for Molecular and Translational Medicine, Peking University Health Science Center, Beijing 100081, P.R. China
| | - Jiebin Dong
- Central Laboratory, and Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Peking University; Peking University Department of Cell Biology and Stem Cell Research Center, School of Basic Medical Sciences, Center for Molecular and Translational Medicine, Peking University Health Science Center, Beijing 100081, P.R. China
| | - Yun Bai
- Central Laboratory, and Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Peking University; Peking University Department of Cell Biology and Stem Cell Research Center, School of Basic Medical Sciences, Center for Molecular and Translational Medicine, Peking University Health Science Center, Beijing 100081, P.R. China
| | - Hongkui Deng
- Central Laboratory, and Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Peking University; Peking University Department of Cell Biology and Stem Cell Research Center, School of Basic Medical Sciences, Center for Molecular and Translational Medicine, Peking University Health Science Center, Beijing 100081, P.R. China
| | - Shicheng Wei
- Central Laboratory, and Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Peking University; Peking University Department of Cell Biology and Stem Cell Research Center, School of Basic Medical Sciences, Center for Molecular and Translational Medicine, Peking University Health Science Center, Beijing 100081, P.R. China
- Laboratory for Biomaterials and Regenerative Medicine, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, P.R. China
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6
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Wang W, Wang J, Lei L, Xu J, Qin Y, Gao Q, Zou J. Characterisation of IL-15 and IL-2Rβ in grass carp: IL-15 upregulates cytokines and transcription factors of type 1 immune response and NK cell activation. Fish Shellfish Immunol 2020; 107:104-117. [PMID: 32971272 DOI: 10.1016/j.fsi.2020.09.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 09/01/2020] [Accepted: 09/21/2020] [Indexed: 06/11/2023]
Abstract
Interleukin (IL) -15 belongs to the common cytokine receptor γ chain (γC) family and has diverse functions in regulating the development, proliferation and activation of NK and T cells. It activates a hetero-trimeric receptor complex consisting of IL-2Rα, IL-2Rβ and a common γ chain (γC). In this study, the full-length cDNA sequences of IL-15 and IL-2Rβ were identified in grass carp (Ctenopharyngodon idella, Ci) and their expression profiles analysed. The CiIL-15 and CiIL-2Rβ were shown to be broadly expressed in tissues, with the highest levels detected in the spleen. Moreover, the CiIL-15 and CiIL-2Rβ were modulated in primary head kidney leucocytes (HKLs) and splenocytes by immunostimulants and cytokines, and in the head kidney and spleen of fish after infection of Flavobacterium columnare and grass carp reovirus. The bioactivity of bacteria derived recombinant CiIL-15 protein was evaluated in the primary leucocytes. The CiIL-15 was shown to induce signature genes of type 1 immune response (IFN-γ and T-bet) and NK cell activation (perforin and Eomesa), whilst exhibiting inhibitory effects on the genes involved in the type 2 immune response (IL-4/13, IL-10 and Gata3). Our data suggest that IL-15 is a key regulator in promoting the type 1 immune response and NK cell activation in fish.
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Affiliation(s)
- Wei Wang
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China; International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China
| | - Junya Wang
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China; International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China
| | - Lina Lei
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China; International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China
| | - Jiawen Xu
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China; International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China
| | - Yuting Qin
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China; International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China
| | - Qian Gao
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China; International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China
| | - Jun Zou
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China; International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
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7
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Liu X, Hao Y, Peng L, Liu Y, Wei N, Liang Q. MiR-122 is involved in immune response by regulating Interleukin-15 in the orange-spotted grouper (Epinephelus coioides). Fish Shellfish Immunol 2020; 106:404-409. [PMID: 32800982 DOI: 10.1016/j.fsi.2020.08.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 07/11/2020] [Accepted: 08/10/2020] [Indexed: 06/11/2023]
Abstract
Epinephelus coioides is an important economic culture marine fish and is susceptible to various pathogenic diseases. Increasingly evidences showed that miRNAs participated in the regulation of the cell proliferation, differentiation and immune response. MiR-122 has been reported to play an essential role in immune response by triggering an inflammatory reaction. However, the function of miR-122 in response to bacterial infection is unclear in Epinephelus coioides. Herein, we report that miR-122 is involved in response to Aeromonas hydrophila infection of grouper spleen cells (GS). IL-15, IL-6 and IL-1β are inhibited in overexpression miR-122 GS cells, while induced in silence miR-122 GS cells. In addition, IL-15 is predicted to be the target gene of miR-122, which is further confirmed by LUC. Taken together, we propose that miR-122 regulates the immune response to bacterial infection by triggering IL-15.
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Affiliation(s)
- Xing Liu
- Department of Bioengineering, Zhuhai Campus of Zunyi Medical University, Zhuhai, China
| | - Yan Hao
- Department of Bioengineering, Zhuhai Campus of Zunyi Medical University, Zhuhai, China
| | - LiPing Peng
- Department of Bioengineering, Zhuhai Campus of Zunyi Medical University, Zhuhai, China
| | - YinHua Liu
- Department of Bioengineering, Zhuhai Campus of Zunyi Medical University, Zhuhai, China
| | - Nina Wei
- Department of Bioengineering, Zhuhai Campus of Zunyi Medical University, Zhuhai, China
| | - QingJian Liang
- College of Life Science, South China Normal University, Guangzhou, 510631, PR China.
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8
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Sousa RP, Laurent AD, Quéméner A, Mortier E, Questel JYL. Mechanistic and Structural Insights on the IL-15 System through Molecular Dynamics Simulations. Molecules 2019; 24:molecules24183261. [PMID: 31500206 PMCID: PMC6767322 DOI: 10.3390/molecules24183261] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 09/05/2019] [Accepted: 09/06/2019] [Indexed: 11/16/2022] Open
Abstract
Interleukin 15 (IL-15), a four-helix bundle cytokine, is involved in a plethora of different cellular functions and, particularly, plays a key role in the development and activation of immune responses. IL-15 forms receptor complexes by binding with IL-2Rβ- and common γ (γc)-signaling subunits, which are shared with other members of the cytokines family (IL-2 for IL-2Rβ- and all other γc- cytokines for γc). The specificity of IL-15 is brought by the non-signaling α-subunit, IL-15Rα. Here we present the results of molecular dynamics simulations carried out on four relevant forms of IL-15: its monomer, IL-15 interacting individually with IL-15Rα (IL-15/IL-15Rα), with IL-2Rβ/γc subunits (IL-15/IL-2Rβ/γc) or with its three receptors simultaneously (IL-15/IL-15Rα/IL-2Rβ/γc). Through the analyses of the various trajectories, new insights on the structural features of the interfaces are highlighted, according to the considered form. The comparison of the results with the experimental data, available from X-ray crystallography, allows, in particular, the rationalization of the importance of IL-15 key residues (e.g., Asp8, Lys10, Glu64). Furthermore, the pivotal role of water molecules in the stabilization of the various protein-protein interfaces and their H-bonds networks are underlined for each of the considered complexes.
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Affiliation(s)
- Rui P Sousa
- Université de Nantes, CEISAM UMR 6230, UFR des Sciences et des Techniques, 2 rue de la Houssinière, BP 92208, F-44000 Nantes, France.
- CRCINA, CNRS, Inserm, Université d'Angers, Université de Nantes, F-44200 Nantes, France.
- Immunotherapy, Graft, Oncology (IGO) LabEx, Nantes, France.
| | - Adèle D Laurent
- Université de Nantes, CEISAM UMR 6230, UFR des Sciences et des Techniques, 2 rue de la Houssinière, BP 92208, F-44000 Nantes, France.
| | - Agnès Quéméner
- CRCINA, CNRS, Inserm, Université d'Angers, Université de Nantes, F-44200 Nantes, France.
- Immunotherapy, Graft, Oncology (IGO) LabEx, Nantes, France.
| | - Erwan Mortier
- CRCINA, CNRS, Inserm, Université d'Angers, Université de Nantes, F-44200 Nantes, France.
- Immunotherapy, Graft, Oncology (IGO) LabEx, Nantes, France.
- IMPACT Platform, SFR Santé, CNRS, Inserm, Université de Nantes, Nantes, F-44000, France.
| | - Jean-Yves Le Questel
- Université de Nantes, CEISAM UMR 6230, UFR des Sciences et des Techniques, 2 rue de la Houssinière, BP 92208, F-44000 Nantes, France.
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9
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Watson DC, Moysi E, Valentin A, Bergamaschi C, Devasundaram S, Fortis SP, Bear J, Chertova E, Bess J, Sowder R, Venzon DJ, Deleage C, Estes JD, Lifson JD, Petrovas C, Felber BK, Pavlakis GN. Treatment with native heterodimeric IL-15 increases cytotoxic lymphocytes and reduces SHIV RNA in lymph nodes. PLoS Pathog 2018; 14:e1006902. [PMID: 29474450 PMCID: PMC5825155 DOI: 10.1371/journal.ppat.1006902] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 01/24/2018] [Indexed: 12/31/2022] Open
Abstract
B cell follicles in secondary lymphoid tissues represent an immune privileged sanctuary for AIDS viruses, in part because cytotoxic CD8+ T cells are mostly excluded from entering the follicles that harbor infected T follicular helper (TFH) cells. We studied the effects of native heterodimeric IL-15 (hetIL-15) treatment on uninfected rhesus macaques and on macaques that had spontaneously controlled SHIV infection to low levels of chronic viremia. hetIL-15 increased effector CD8+ T lymphocytes with high granzyme B content in blood, mucosal sites and lymph nodes, including virus-specific MHC-peptide tetramer+ CD8+ cells in LN. Following hetIL-15 treatment, multiplexed quantitative image analysis (histo-cytometry) of LN revealed increased numbers of granzyme B+ T cells in B cell follicles and SHIV RNA was decreased in plasma and in LN. Based on these properties, hetIL-15 shows promise as a potential component in combination immunotherapy regimens to target AIDS virus sanctuaries and reduce long-term viral reservoirs in HIV-1 infected individuals. TRIAL REGISTRATION ClinicalTrials.gov NCT02452268.
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Affiliation(s)
- Dionysios C. Watson
- Human Retrovirus Section, Vaccine Branch, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, Maryland, United States of America
| | - Eirini Moysi
- Human Retrovirus Section, Vaccine Branch, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, Maryland, United States of America
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland, United States of America
| | - Antonio Valentin
- Human Retrovirus Section, Vaccine Branch, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, Maryland, United States of America
| | - Cristina Bergamaschi
- Human Retrovirus Pathogenesis Section; Vaccine Branch, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, Maryland, United States of America
| | - Santhi Devasundaram
- Human Retrovirus Pathogenesis Section; Vaccine Branch, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, Maryland, United States of America
| | - Sotirios P. Fortis
- Human Retrovirus Section, Vaccine Branch, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, Maryland, United States of America
| | - Jenifer Bear
- Human Retrovirus Pathogenesis Section; Vaccine Branch, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, Maryland, United States of America
| | - Elena Chertova
- AIDS and Cancer Virus Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland, United States of America
| | - Julian Bess
- AIDS and Cancer Virus Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland, United States of America
| | - Ray Sowder
- AIDS and Cancer Virus Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland, United States of America
| | - David J. Venzon
- Biostatistics and Data Management Section, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Rockville, Maryland, United States of America
| | - Claire Deleage
- AIDS and Cancer Virus Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland, United States of America
| | - Jacob D. Estes
- AIDS and Cancer Virus Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland, United States of America
| | - Jeffrey D. Lifson
- AIDS and Cancer Virus Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland, United States of America
| | - Constantinos Petrovas
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, Bethesda, Maryland, United States of America
| | - Barbara K. Felber
- Human Retrovirus Pathogenesis Section; Vaccine Branch, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, Maryland, United States of America
| | - George N. Pavlakis
- Human Retrovirus Section, Vaccine Branch, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, Maryland, United States of America
- * E-mail:
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10
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Levinger P, Caldow MK, Bartlett JR, Peake JM, Smith C, Cameron-Smith D, Levinger I. The level of FoxO1 and IL-15 in skeletal muscle, serum and synovial fluid in people with knee osteoarthritis: a case control study. Osteoporos Int 2016; 27:2137-43. [PMID: 26762130 DOI: 10.1007/s00198-015-3473-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 12/21/2015] [Indexed: 12/24/2022]
Abstract
UNLABELLED The molecular regulation of muscle function in knee osteoarthritis is unclear. Elevated muscle atrophy regulation marker expression was associated with reduced muscle strength in knee osteoarthritis. The level of protein expression appears to be different between muscle, knee joint and serum, suggesting that inflammation is regulated differently within these tissues. INTRODUCTION Impaired muscle function is common in knee osteoarthritis (OA). Numerous biochemical molecules have been implicated in the development of OA; however, these have only been identified in the joint and serum. We compared the expression of interleukin-15 (IL-15) and Forkhead box protein-O1 (FoxO1) in muscle of patients with knee OA and asymptomatic individuals and examined whether IL-15 was also present in the joint and serum. METHODS Muscle and blood samples were collected from 19 patients with knee OA and 10 age-matched asymptomatic individuals. Synovial fluid and muscle biopsies were collected from the OA group during knee replacement surgery. IL-15 and FoxO1 were measured in the skeletal muscle. IL-15 abundance was also analysed in the serum of both groups and synovial fluid from the OA group. Knee extensor strength was measured and correlated with IL-15 and FoxO1 in the muscle. RESULTS FoxO1 protein expression was higher (p = 0.04), whereas IL-15 expression was lower (p = 0.02) in the muscle of the OA group. Strength was also lower in the OA group and was inversely correlated with FoxO1 expression. No correlation was found between IL-15 in the joint, muscle or serum. CONCLUSION Skeletal muscle, particularly the quadriceps, is affected in people with knee OA where elevated FoxO1 protein expression was associated with reduced muscle strength. While IL-15 protein expression in the muscle was lower in the knee OA group, no correlation was found between the expression of IL-15 protein in the muscle, joint and serum, which suggests that inflammation is regulated differently within these tissues. Australian Clinical Trials Registry (ACTR) number: ACTRN12613000467730 ( http://www.anzctr.org.au/TrialSearch.aspx?searchTxt=ACTRN12613000467730&isBasic=True ).
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Affiliation(s)
- P Levinger
- Clinical Exercise Science Program, Institute of Sport, Exercise & Active Living (ISEAL), Victoria University, Melbourne, Victoria, Australia.
- Lower Extremity and Gait Studies Program, School of Allied Health, La Trobe University, Bundoora, Melbourne, Victoria, Australia.
| | - M K Caldow
- Basic and Clinical Myology Laboratory, Department of Physiology, University of Melbourne, Parkville, Melbourne, Australia
| | - J R Bartlett
- Warringal Private Medical Centre, Heidelberg, Melbourne, Victoria, Australia
| | - J M Peake
- School of Biomedical Sciences and Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia
| | - C Smith
- Clinical Exercise Science Program, Institute of Sport, Exercise & Active Living (ISEAL), Victoria University, Melbourne, Victoria, Australia
| | - D Cameron-Smith
- Liggins Institute, The University of Auckland, Auckland, New Zealand
| | - I Levinger
- Clinical Exercise Science Program, Institute of Sport, Exercise & Active Living (ISEAL), Victoria University, Melbourne, Victoria, Australia
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11
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Das S, Mohapatra A, Kar B, Sahoo PK. Molecular characterization of interleukin 15 mRNA from rohu, Labeo rohita (Hamilton): Its prominent role during parasitic infection as indicated from infection studies. Fish Shellfish Immunol 2015; 43:25-35. [PMID: 25514374 DOI: 10.1016/j.fsi.2014.12.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 11/01/2014] [Accepted: 12/06/2014] [Indexed: 06/04/2023]
Abstract
Interleukin 15 (IL-15) is an important cytokine of fish immune system. Sequence characterization of IL-15 from rohu, Labeo rohita revealed a mRNA sequence of 1064 bp with coding sequence of 567 bp and signal peptide of 16 amino acids. There are four characteristic sequence features viz., presence of four out-of-frame AUG initiation codons, four highly conserved cysteine residues, constitutive expression in all tissues and evolutionary similarity. The ontogeny study revealed maternal transfer of this molecule and higher expression up to 3 h post-fertilization in fertilized embryos. Its expression was down-regulated in anterior and posterior kidneys, intestine and liver tissues of rohu infected with Aeromonas hydrophila. Mild up-regulation in liver and higher expression in spleen was noticed in rohu stimulated with poly I:C (poly ionosinic:cytidylic), whereas down-regulation was observed in intestine and kidney tissues. However, a consistent higher expression was noticed in kidney and skin tissues during Argulus siamensis infection. Therefore, rohu IL-15 might possess more defensive role during early development and parasitic infection.
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Affiliation(s)
- Sweta Das
- Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar 751 002, India
| | - Amruta Mohapatra
- Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar 751 002, India
| | - Banya Kar
- Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar 751 002, India
| | - P K Sahoo
- Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar 751 002, India.
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12
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Wong RL, Liu B, Zhu X, You L, Kong L, Han KP, Lee HI, Chavaillaz PA, Jin M, Wang Y, Rhode PR, Wong HC. Interleukin-15:Interleukin-15 receptor α scaffold for creation of multivalent targeted immune molecules. Protein Eng Des Sel 2011; 24:373-83. [PMID: 21177283 PMCID: PMC3049345 DOI: 10.1093/protein/gzq116] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [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: 09/12/2010] [Revised: 10/27/2010] [Accepted: 11/23/2010] [Indexed: 12/22/2022] Open
Abstract
Human interleukin-15 (hIL-15) and its receptor α (hIL-15Rα) are co-expressed in antigen presenting cells allowing trans-presentation of the cytokine to immune effector cells. We exploited the high-affinity interactions between hIL-15 and the extracellular hIL-15Rα sushi domain (hIL-15RαSu) to create a functional scaffold for the design of multispecific fusion protein complexes. Using single-chain T cell receptors (scTCRs) as recognition domains linked to the IL-15:IL-15Rα scaffold, we generated both bivalent and bispecific complexes. In these fusions, the scTCR domains retain the antigen-binding activity and the hIL-15 domain exhibits receptor binding and biological activity. As expected, bivalent scTCR fusions exhibited improved antigen binding due to increased avidity, whereas fusions comprising two different scTCR domains were capable of binding two cognate peptide/MHC complexes. Bispecific molecules containing scTCR and scCD8αβ domains also exhibit enhanced binding to peptide/MHC complexes, demonstrating that the IL-15:IL-15Rα scaffold displays flexibility necessary to support multi-domain interactions with a given target. Surprisingly, functional heterodimeric molecules could be formed by co-expressing the TCR α and β chains separately as fusions to the hIL-15 and hIL-15RαSu domains. Together, these properties indicate that the hIL-15 and hIL-15RαSu domains can be used as versatile, functional scaffold for generating novel targeted immune molecules.
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Affiliation(s)
- Richard L. Wong
- Department of Biomedical Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Bai Liu
- Altor BioScience Corporation, Miramar, FL 33025, USA
| | - Xiaoyun Zhu
- Altor BioScience Corporation, Miramar, FL 33025, USA
| | - Lijing You
- Altor BioScience Corporation, Miramar, FL 33025, USA
| | - Lin Kong
- Altor BioScience Corporation, Miramar, FL 33025, USA
| | - Kai-Ping Han
- Altor BioScience Corporation, Miramar, FL 33025, USA
| | - Hyung-il Lee
- Altor BioScience Corporation, Miramar, FL 33025, USA
| | | | - Moonsoo Jin
- Department of Biomedical Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Yi Wang
- Department of Biomedical Engineering, Cornell University, Ithaca, NY 14850, USA
| | | | - Hing C. Wong
- Altor BioScience Corporation, Miramar, FL 33025, USA
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13
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Hanick NA, Rickert M, Varani L, Bankovich AJ, Cochran JR, Kim DM, Surh CD, Garcia KC. Elucidation of the interleukin-15 binding site on its alpha receptor by NMR. Biochemistry 2007; 46:9453-61. [PMID: 17655329 DOI: 10.1021/bi700652f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [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] [Indexed: 11/29/2022]
Abstract
The cytokine interleukin-15 (IL-15) signals through the formation of a quaternary receptor complex composed of an IL-15-specific alpha receptor, together with beta and gammac receptors that are shared with interleukin-2 (IL-2). The initiating step in the formation of this signaling complex is the interaction between IL-15 and IL-15Ralpha, which is a single sushi domain bearing strong structural homology to one of the two sushi domains of IL-2Ralpha. The crystal structure of the IL2-Ralpha/IL-2 complex has been determined, however little is known about the analogous IL-15Ralpha/IL-15 binding interaction. Here we show that recombinant IL-15 can be overexpressed as a stable complex in the presence of its high affinity receptor, IL-15Ralpha. We find that this complex is 10-fold more active than IL-15 alone in stimulating proliferation and survival of memory phenotype CD8 T cells. To probe the ligand/receptor interface, we used solution NMR to map chemical shifts on 15N-labeled IL-15Ralpha in complex with unlabeled IL-15. Our results predict that the binding surface on IL-15Ralpha involves strands C and D, similar to IL-2Ralpha. The interface, as predicted here, leaves open the possibility of trans-presentation of IL-15 by IL-15Ralpha on an opposing cell.
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Affiliation(s)
- Nicole A Hanick
- Howard Hughes Medical Institute, Department of Molecular and Cellular Physiology, Stanford University School of Medicine, California 94305, USA
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14
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Chirifu M, Hayashi C, Nakamura T, Toma S, Shuto T, Kai H, Yamagata Y, Davis SJ, Ikemizu S. Crystal structure of the IL-15-IL-15Ralpha complex, a cytokine-receptor unit presented in trans. Nat Immunol 2007; 8:1001-7. [PMID: 17643103 DOI: 10.1038/ni1492] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.3] [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: 04/20/2007] [Accepted: 06/20/2007] [Indexed: 12/11/2022]
Abstract
Interleukin 15 (IL-15) and IL-2, which promote the survival of memory CD8(+) T cells and regulatory T cells, respectively, bind receptor complexes that share beta- and gamma-signaling subunits. Receptor specificity is provided by unique, nonsignaling alpha-subunits. Whereas IL-2 receptor-alpha (IL-2Ralpha) is expressed together in cis with the beta- and gamma-subunits on T cells and B cells, IL-15Ralpha is expressed in trans on antigen-presenting cells. Here we present a 1.85-A crystal structure of the human IL-15-IL-15Ralpha complex. The structure provides insight into the molecular basis of the specificity of cytokine recognition and emphasizes the importance of water in generating this very high-affinity complex. Despite very low IL-15-IL-2 sequence homology and distinct receptor architecture, the topologies of the IL-15-IL-15Ralpha and IL-2-IL-2Ralpha complexes are very similar. Our data raise the possibility that IL-2, like IL-15, might be capable of being presented in trans in the context of its unique receptor alpha-chain.
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Affiliation(s)
- Mami Chirifu
- Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Kumamoto 862-0973, Japan
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15
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Wang T, Holland JW, Carrington A, Zou J, Secombes CJ. Molecular and Functional Characterization of IL-15 in Rainbow TroutOncorhynchus mykiss:A Potent Inducer of IFN-γ Expression in Spleen Leukocytes. J Immunol 2007; 179:1475-88. [PMID: 17641013 DOI: 10.4049/jimmunol.179.3.1475] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
IL-15 is a member of the common gamma-chain family of cytokines that possess a heterogeneous repertoire of activities on various cells of the immune system. We report here the first functional characterization of a fish IL-15 in rainbow trout. The trout IL-15 gene is 6-kb long and contains six exons and five introns that transcribe into a 1.2-kb mRNA containing seven out-of-frame AUG initiation codons and translate into a 193-aa peptide. Potential sites for transcriptional activators and repressors have been identified in the trout IL-15 gene. Like IL-15 from other species, trout IL-15 is closely linked to an INPP4B gene, but there is also a BCL10 gene located between the IL-15 and INPP4B genes. Three alternative splicing variants of the trout IL-15 gene have also been identified and their expression in vivo was studied. Trout IL-15 expression is present in all the tissues and cell lines studied. Recombinant trout IFN-gamma selectively increased IL-15 expression but had little effect on other cytokines such as IL-1 beta and IL-11. Recombinant trout IL-15 preferentially stimulated splenic leukocytes from healthy fish, where it induced a large increase in IFN-gamma expression, with little, if any, effect on IL-1 beta expression. This effect was quite long-lived, and was still apparent 24 h poststimulation. Although the exact cell types being affected have still to be determined, it is clear that once produced IL-15 will have a profound affect on the ability of the fish immune system to activate antimicrobial defenses and genes induced themselves by IFN-gamma.
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Affiliation(s)
- Tiehui Wang
- Scottish Fish Immunology Research Centre, School of Biological Sciences, University of Aberdeen, Aberdeen, United Kingdom
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16
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Quéméner A, Bernard J, Mortier E, Plet A, Jacques Y, Tran V. Docking of human interleukin-15 to its specific receptor alpha chain: correlation between molecular modeling and mutagenesis experimental data. Proteins 2007; 65:623-36. [PMID: 17001647 DOI: 10.1002/prot.21103] [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] [Indexed: 11/12/2022]
Abstract
A structural model of the sushi domain of IL-15Ralpha was first obtained by homology modeling to study its interactions with IL-15 by means of molecular modeling, peptide scanning, and site-directed mutagenesis. From these experimental data, a putative interacting surface of IL-15Ralpha with a previously published IL-15 model was inferred: Leu25, Leu44, and Glu46 of IL-15 and Arg35 of IL-15Ralpha were found to be key interfacial residues and were subsequently used as filters for the construction of docking solutions. Human IL-15/IL-15Ralpha complexes were constructed in two stages, with a preliminary docking procedure, treating the two partners as rigid bodies and using these filters. In this first stage, two classes of docking solutions were characterized. From a topological point of view, each solution could be derived from the other by reverse orientation of one partner in relation to the other. In a second stage, several further energy refinements clearly favored one solution. Moreover, this unique docking solution was confirmed by molecular modeling of IL-15 mutants previously built and tested in our laboratory. Finally, this complex model, which is a useful tool to study the IL-15/IL-15Ralpha interface, was topologically compared to IL-2/IL-2Ralpha complexes (previous model in the literature and recent crystal structure).
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Affiliation(s)
- Agnès Quéméner
- INSERM, U601, Groupe de Recherche Cytokines et Récepteurs, Institut de Biologie, Nantes, France
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17
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Bei JX, Suetake H, Araki K, Kikuchi K, Yoshiura Y, Lin HR, Suzuki Y. Two interleukin (IL)-15 homologues in fish from two distinct origins. Mol Immunol 2006; 43:860-9. [PMID: 16055191 DOI: 10.1016/j.molimm.2005.06.040] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [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: 05/30/2005] [Indexed: 10/25/2022]
Abstract
Here, we report two distinct genes in teleosts that are homologous to interleukin (IL)-15. The two genes, isolated from fugu (Takifugu rubripes), resemble to mammalian IL-15 but differ from IL-2 and IL-21 in their amino acid sequences, the possessing of an extraordinary long signal peptide and more widespread tissue localization. In addition, multiple out-of-frame AUG codons, the negative translational regulators of mammalian IL-15 genes were also detected in the 5'-UTR of the two genes. Fugu IL-15 homologues also contain four conserved cysteines allowing the formation of two disulfide bridges along with four predicted alpha-helices. Genomic analysis showed that one of the fugu IL-15 homologues possessed six coding exons and exhibited a similar exon-intron organization and synteny structure to that of mammalian and chicken IL-15 genes. Conversely, the other fugu IL-15 homologue possesses four exons and exhibits a different synteny structure with that of IL-15, suggesting that the two genes were derived from two different origins. Moreover, the two genes also differ from each other in tissue localizations and in their expression in response to mitogens. The existence of these two IL-15 homologues in telesots was further supported by their characterization in zebrafish Danio rerio, and the green-spotted pufferfish Tetraodon nigroviridis. The discovery of two distinct IL-15 homologues in fish will assist investigations into the evolution of these genes and their relative contribution to the fish immune system.
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Affiliation(s)
- Jin-Xin Bei
- Institute of Aquatic Economic Animals, Sun Yat-Sen (Zhongshan) University, Guangzhou 510275, China
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18
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Fang W, Xiang LX, Shao JZ, Wen Y, Chen SY. Identification and characterization of an interleukin-15 homologue from Tetraodon nigroviridis. Comp Biochem Physiol B Biochem Mol Biol 2006; 143:335-43. [PMID: 16455279 DOI: 10.1016/j.cbpb.2005.12.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [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: 09/07/2005] [Revised: 12/02/2005] [Accepted: 12/03/2005] [Indexed: 11/25/2022]
Abstract
Interleukin-15 (IL-15) plays an important role in adaptive immune systems in vertebrates with similar bioactivities to interleukin-2 (IL-2). Here we report molecular cloning, sequence analysis and distribution of an IL-15 homologue from a pufferfish (Tetraodon nigroviridis). It is located within a 3,088 bp genomic fragment, transcribed into a 1,056 bp mRNA including 158 bp 5'UTR (untranslated region), 519 bp ORF (open reading frame) and 379 bp 3'UTR. T. nigroviridis IL-15 is constitutively detectable in tissues and organs selected. Levels of transcripts were observed after various stimulations. Gene organization is similar to mammals and birds, and a high degree of conservation of chromosome synteny exists between them. Systematic genomics search against Takifugu rubripes genome supports our conclusions. The T. nigroviridis IL-15 precursor with 172aa (amino acids) contains a putative 53aa signal peptide, while the mature peptide has a calculated molecular mass of 13.36 kDa and a theoretical pI of 4.67. The protein sequence shares 13.3-62.1% identity with reported IL-15s. Phylogenetic analysis grouped Tetraodon with other fish on a separated branch, excluded from mammalian and avian IL-15s. In addition, our analysis on another annotated T. nigroviridis IL-15 demonstrated that it may be a paralogue of IL-15. To differentiate it from the known IL-15s, we described it as IL-15x.
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Affiliation(s)
- Wei Fang
- College of Life Sciences, Zhejiang University, Hangzhou 310012, People's Republic of China
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19
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Mortier E, Quéméner A, Vusio P, Lorenzen I, Boublik Y, Grötzinger J, Plet A, Jacques Y. Soluble interleukin-15 receptor alpha (IL-15R alpha)-sushi as a selective and potent agonist of IL-15 action through IL-15R beta/gamma. Hyperagonist IL-15 x IL-15R alpha fusion proteins. J Biol Chem 2005; 281:1612-9. [PMID: 16284400 DOI: 10.1074/jbc.m508624200] [Citation(s) in RCA: 216] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Interleukin-15 (IL-15) is crucial for the generation of multiple lymphocyte subsets (natural killer (NK), NK-T cells, and memory CD8 T cells), and transpresentation of IL-15 by monocytes and dendritic cells has been suggested to be the dominant activating process of these lymphocytes. We have previously shown that a natural soluble form of IL-15R alpha chain corresponding to the entire extracellular domain of IL-15R alpha behaves as a high affinity IL-15 antagonist. In sharp contrast with this finding, we demonstrate in this report that a recombinant, soluble sushi domain of IL-15R alpha, which bears most of the binding affinity for IL-15, behaves as a potent IL-15 agonist by enhancing its binding and biological effects (proliferation and protection from apoptosis) through the IL-15R beta/gamma heterodimer, whereas it does not affect IL-15 binding and function of the tripartite IL-15R alpha/beta/gamma membrane receptor. Our results suggest that, if naturally produced, such soluble sushi domains might be involved in the IL-15 transpresentation mechanism. Fusion proteins (RLI and ILR), in which IL-15 and IL-15R alpha-sushi are attached by a flexible linker, are even more potent than the combination of IL-15 plus sIL-15R alpha-sushi. After binding to IL-15R beta/gamma, RLI is internalized and induces a biological response very similar to the IL-15 high affinity response. Such hyper-IL-15 fusion proteins appear to constitute potent adjuvants for the expansion of lymphocyte subsets.
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MESH Headings
- Animals
- CHO Cells
- Cell Line, Tumor
- Cricetinae
- Dimerization
- Humans
- Interleukin Receptor Common gamma Subunit
- Interleukin-15/chemistry
- Interleukin-15/pharmacology
- Interleukin-2 Receptor beta Subunit
- Kinetics
- Leukemia, Erythroblastic, Acute
- Models, Molecular
- Protein Binding
- Protein Structure, Secondary
- Receptors, Interleukin/physiology
- Receptors, Interleukin-15
- Receptors, Interleukin-2/agonists
- Receptors, Interleukin-2/chemistry
- Receptors, Interleukin-2/physiology
- Recombinant Fusion Proteins/chemistry
- Recombinant Fusion Proteins/metabolism
- Recombinant Fusion Proteins/pharmacology
- Transfection
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Affiliation(s)
- Erwan Mortier
- INSERM, U601, Groupe de Recherche Cytokines et Récepteurs, Institut de Biologie, Nantes F-44093, France
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20
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Bernard J, Harb C, Mortier E, Quéméner A, Meloen RH, Vermot-Desroches C, Wijdeness J, van Dijken P, Grötzinger J, Slootstra JW, Plet A, Jacques Y. Identification of an Interleukin-15α Receptor-binding Site on Human Interleukin-15. J Biol Chem 2004; 279:24313-22. [PMID: 15039446 DOI: 10.1074/jbc.m312458200] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
To identify the epitopes in human interleukin-15 (IL-15) that are responsible for binding to the interleukin-15 receptor alpha chain, antibody and receptor mapping by peptide scanning and site-directed mutagenesis was used. By using peptide scanning, we identified four regions in IL-15. The first region ((85)CKECEELEEKN(95)) is located in the C-D loop and is recognized by a set of non-inhibitory antibodies. The second region ((102)SFVHIVQMFIN(112)) is located in helix D and is recognized by two antibodies that are inhibitory of IL-15 bio-activity but not of IL-15 binding to IL-15Ralpha. The two remaining regions react with a recombinant soluble form of the IL-15Ralpha; the first ((44)LLELQVISL(52), peptide 1) corresponds to a sequence located in the B-helix and the second ((64)ENLII(68), peptide 2) to a sequence located in helix C. The latter is also contained in the epitope recognized by an antibody (monoclonal antibody B-E29) that prevents IL-15 binding to IL-15Ralpha. By site-directed mutagenesis, we confirmed that residues present in peptide 1 (Leu-45, Glu-46, Val-49, Ser-51, and Leu-52) and peptide 2 (Leu-66 and Ile-67) are involved in the binding of IL-15 to IL-15Ralpha. Furthermore, the results presented indicate that residues in the second peptide (Glu-64, Asn-65, and Ile-68) participate in IL-2Rbeta recruitment. This finding could have implications for the dynamics of receptor assembly. These results also indicate that the modes of interaction of IL-15 and IL-2 with their respective alpha chains are not completely analogous. Finally, some of the IL-15 mutants generated in this study displayed agonist or antagonist properties and may be useful as therapeutic agents.
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Affiliation(s)
- Jérôme Bernard
- Groupe de Recherche Cytokines et Récepteurs, Unité INSERM 601, Institut de Biologie, 9 Quai Moncousu, 44093 Nantes Cedex 01, France
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Zheng XX, Maslinski W, Ferrari-Lacraz S, Strom TB. Cytokines in the treatment and prevention of autoimmune responses-a role of IL-15. Adv Exp Med Biol 2003; 520:87-95. [PMID: 12613574 DOI: 10.1007/978-1-4615-0171-8_6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Xin Xiao Zheng
- Beth Israel Deaconess Medical Centre, Boston, Massachusetts, USA
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Abstract
Chicken interleukin 2 (chIL-2) has low, but significant, homology to both mammalian IL-2 and mammalian IL-15. In view of its unique phylogenetic position and potential use as a vaccine adjuvant, a detailed mutational analysis for critical functional sites was undertaken. It was found that Asp17 is a critical N terminal contact site for binding to the putative chIL-2 receptor, which is similar to results obtained for mammalian IL-2 and IL-15. Analysis of the C terminus did not reveal a single critical amino acid. However, deletion mutant studies demonstrated that removal of C terminal amino acids yielded proteins with decreased bioactivity and that this decrease was a function of the number and kind of amino acids removed. This study is the first non-mammalian IL-2 mutational analysis and proposes a model for the interaction between chIL-2 and its receptor.
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Affiliation(s)
- J E Kolodsick
- Department of Immunology and Microbiology, Wayne State University, Detroit, Michigan 48201, USA
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Kurys G, Tagaya Y, Bamford R, Hanover JA, Waldmann TA. The long signal peptide isoform and its alternative processing direct the intracellular trafficking of interleukin-15. J Biol Chem 2000; 275:30653-9. [PMID: 10869346 DOI: 10.1074/jbc.m002373200] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Two isoforms of interleukin (IL)-15 exist: one with a short and another with a long signal peptide (LSP). Experiments using combinations of the LSP and mature proteins IL-2, IL-15, and green fluorescent protein revealed complex pathways of intracellular trafficking. In one pathway, the LSP was unprocessed, and IL-15 was not glycosylated, remained in the cytoplasm, and was degraded. The second trafficking pathway involved endoplasmic reticulum entry, N-linked glycosylation, and alternative partial LSP processing. The third pathway involved endoplasmic reticulum entry, followed by glycosylation, complete processing, and ultimately secretion. The complex intracellular trafficking patterns of LSP-IL-15 with its impediments to secretion as well as impediments to translation may be required due to the potency of IL-15 as an inflammatory cytokine. In terms of a more positive role, we propose that intracellular infection may relieve the burdens on translation and intracellular trafficking to yield effective IL-15 expression.
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Affiliation(s)
- G Kurys
- Metabolism Branch, NCI, National Institutes of Health and the Laboratory of Cell Biochemistry and Biology, NIDDK, National Institutes of Health, Bethesda, Maryland 20892-1374, USA
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Tagaya Y, Kurys G, Thies TA, Losi JM, Azimi N, Hanover JA, Bamford RN, Waldmann TA. Generation of secretable and nonsecretable interleukin 15 isoforms through alternate usage of signal peptides. Proc Natl Acad Sci U S A 1997; 94:14444-9. [PMID: 9405632 PMCID: PMC25016 DOI: 10.1073/pnas.94.26.14444] [Citation(s) in RCA: 150] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Two isoforms of human interleukin 15 (IL-15) exist. One isoform has a shorter putative signal peptide (21 amino acids) and its transcript shows a tissue distribution pattern that is distinct from that of the alternative IL-15 isoform with a 48-aa signal peptide. The 21-aa signal isoform is preferentially expressed in tissues such as testis and thymus. Experiments using different combinations of signal peptides and mature proteins (IL-2, IL-15, and green fluorescent protein) showed that the short signal peptide regulates the fate of the mature protein by controlling the intracellular trafficking to nonendoplasmic reticulum sites, whereas the long signal peptide both regulates the rate of protein translation and functions as a secretory signal peptide. As a consequence, the IL-15 associated with the short signal peptide is not secreted, but rather is stored intracellularly, appearing in the nucleus and cytoplasmic components. Such production of an intracellular lymphokine is not typical of other soluble interleukin systems, suggesting a biological function for IL-15 as an intracellular molecule.
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Affiliation(s)
- Y Tagaya
- Metabolism Branch, National Cancer Institute, National Institutes of Health, 9000 Rockville Pike, Bethesda, MD 20892, USA.
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25
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Pettit DK, Bonnert TP, Eisenman J, Srinivasan S, Paxton R, Beers C, Lynch D, Miller B, Yost J, Grabstein KH, Gombotz WR. Structure-function studies of interleukin 15 using site-specific mutagenesis, polyethylene glycol conjugation, and homology modeling. J Biol Chem 1997; 272:2312-8. [PMID: 8999939 DOI: 10.1074/jbc.272.4.2312] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.1] [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: 02/03/2023] Open
Abstract
Interleukin (IL)-15 is a multifunctional cytokine that shares many biological activities with IL-2. This functional overlap, as well as receptor binding subunits shared by IL-15 and IL-2, suggests tertiary structural similarities between these two cytokines. In this study, recombinant human IL-15 was PEGylated via lysine-specific conjugation chemistry in order to extend the circulation half-life of this cytokine. Although PEGylation did extend the beta-elimination circulation half-life of IL-15 by greater than 50-fold, the biological activity of polyethylene glycol (PEG)-IL-15 was significantly altered. Specifically, PEG-IL-15 lost its ability to stimulate the proliferation of CTLL but took on the properties of a specific IL-15 antagonist in vitro. In comparing sequence alignments and molecular models for IL-2 and IL-15, it was noted that lysine residues resided in regions of IL-15 that may have selectively disrupted receptor subunit binding. We hypothesized that PEGylation of IL-15 interferes with beta but not alpha receptor subunit binding, resulting in the IL-15 antagonist activity observed in vitro. The validity of this hypothesis was tested by engineering site-specific mutants of human IL-15 as suggested by the IL-15 model (IL-15D8S and IL-15Q108S block beta and gamma receptor subunit binding, respectively). As with PEG-IL-15, these mutants were unable to stimulate CTLL proliferation but were able to specifically inhibit the proliferation of CTLL in response to unmodified IL-15. These results supported our model of IL-15 and confirmed that interference of beta receptor subunit binding by adjacent PEGylation could be responsible for the altered biological activity observed for PEG-IL-15.
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Affiliation(s)
- D K Pettit
- Department of Analytical Chemistry and Formulation, Immunex Corporation, Seattle, Washington 98101, USA.
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Affiliation(s)
- W E Carson
- Department of Surgery, Roswell Park Cancer Institute, Buffalo, New York 14263, USA
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27
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Abstract
IL-15 interacts with a heterotrimeric receptor that consists of the beta and gamma subunits of the IL-2 receptor (IL-2R) as well as a specific, high-affinity IL-15-binding subunit, which is designated IL-15R alpha. Since both the beta and the gamma subunits of the IL-2R are required for signaling by either IL-2 or IL-15, it is not surprising that these cytokines share many activities in vitro. However, the differential expression of these cytokines and the alpha chains of their receptors within various tissues and cell types suggests that IL-2 and IL-15 may perform at least partially distinct physiological functions. The production of IL-15 by macrophages, and possibly other cell types, in response to environmental stimuli and infectious agents suggests that IL-15 may play a role in protective immune responses, allograft rejection, and the pathogenesis of autoimmune diseases.
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Affiliation(s)
- M K Kennedy
- Immunex Corporation, Seattle, Washington 98101-2936, USA
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vanderSpek JC, Sutherland J, Sampson E, Murphy JR. Genetic construction and characterization of the diphtheria toxin-related interleukin 15 fusion protein DAB389 sIL-15. Protein Eng 1995; 8:1317-21. [PMID: 8869645 DOI: 10.1093/protein/8.12.1317] [Citation(s) in RCA: 11] [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] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A gene fusion encoding DAB389 sIL-15 was constructed in which the catalytic and transmembrane domains of native diphtheria toxin (DAB389) are genetically linked to the N-terminus of simian interleukin 15 (sIL-15). It was demonstrated that the cytotoxic action of DAB389 sIL-15 is mediated through the IL-15 receptor. Since toxicity may be blocked with chloroquine, it was concluded that following binding to the IL-15 receptor, the fusion toxin is internalized by receptor-mediated endocytosis and must pass through an acidic compartment in order to facilitate the delivery of the catalytic domain to the cytosol of target cells. As a non-toxic control, the ADP-ribosyltransferase defective mutant DA(E149S)B389 sIL-15 was constructed. It was demonstrated that both sIL-15 and DA(E149S)B389 sIL-15 stimulate protein and DNA synthesis in IL-15 receptor-positive CTLL-2 cells in vitro.
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Affiliation(s)
- J C vanderSpek
- Evans Department of Clinical Research, Boston University Medical Center Hospital, MA 02118, USA
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