1
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Furment MM, Perl A. Immmunometabolism of systemic lupus erythematosus. Clin Immunol 2024; 261:109939. [PMID: 38382658 DOI: 10.1016/j.clim.2024.109939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 01/26/2024] [Accepted: 02/09/2024] [Indexed: 02/23/2024]
Abstract
Systemic lupus erythematosus (SLE) is a potentially fatal chronic autoimmune disease which is underlain by complex dysfunction of the innate and adaptive immune systems. Although a series of well-defined genetic and environmental factors have been implicated in disease etiology, neither the development nor the persistence of SLE is well understood. Given that several disease susceptibility genes and environmental factors interact and influence inflammatory lineage specification through metabolism, the field of immunometabolism has become a forefront of cutting edge research. Along these lines, metabolic checkpoints of pathogenesis have been identified as targets of effective therapeutic interventions in mouse models and validated in clinical trials. Ongoing studies focus on mitochondrial oxidative stress, activation of the mechanistic target of rapamycin, calcium signaling, glucose utilization, tryptophan degradation, and metabolic cross-talk between gut microbiota and the host immune system.
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Affiliation(s)
- Marlene Marte Furment
- Departments of Medicine, State University of New York, Upstate Medical University, Norton College of Medicine, Syracuse, New York 13210, United States of America
| | - Andras Perl
- Departments of Medicine, State University of New York, Upstate Medical University, Norton College of Medicine, Syracuse, New York 13210, United States of America; Biochemistry and Molecular Biology, State University of New York, Upstate Medical University, Norton College of Medicine, Syracuse, New York 13210, United States of America; Microbiology and Immunology, State University of New York, Upstate Medical University, Norton College of Medicine, Syracuse, New York 13210, United States of America.
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2
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Frijlink E, Bosma DM, Busselaar J, Battaglia TW, Staal MD, Verbrugge I, Borst J. PD-1 or CTLA-4 blockade promotes CD86-driven Treg responses upon radiotherapy of lymphocyte-depleted cancer in mice. J Clin Invest 2024; 134:e171154. [PMID: 38349740 PMCID: PMC10940086 DOI: 10.1172/jci171154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 01/17/2024] [Indexed: 03/16/2024] Open
Abstract
Radiotherapy (RT) is considered immunogenic, but clinical data demonstrating RT-induced T cell priming are scarce. Here, we show in a mouse tumor model representative of human lymphocyte-depleted cancer that RT enhanced spontaneous priming of thymus-derived (FOXP3+Helios+) Tregs by the tumor. These Tregs acquired an effector phenotype, populated the tumor, and impeded tumor control by a simultaneous, RT-induced CD8+ cytotoxic T cell (CTL) response. Combination of RT with CTLA-4 or PD-1 blockade, which enables CD28 costimulation, further increased this Treg response and failed to improve tumor control. We discovered that upon RT, the CD28 ligands CD86 and CD80 differentially affected the Treg response. CD86, but not CD80, blockade prevented the effector Treg response, enriched the tumor-draining lymph node migratory conventional DCs that were positive for PD-L1 and CD80 (PD-L1+CD80+), and promoted CTL priming. Blockade of CD86 alone or in combination with PD-1 enhanced intratumoral CTL accumulation, and the combination significantly increased RT-induced tumor regression and OS. We advise that combining RT with PD-1 and/or CTLA-4 blockade may be counterproductive in lymphocyte-depleted cancers, since these interventions drive Treg responses in this context. However, combining RT with CD86 blockade may promote the control of such tumors by enabling a CTL response.
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Affiliation(s)
- Elselien Frijlink
- Division of Tumor Biology and Immunology and Oncode Institute, The Netherlands Cancer Institute, Amsterdam, Netherlands
- Department of Immunology and Oncode Institute, Leiden University Medical Center, Leiden, Netherlands
| | - Douwe M.T. Bosma
- Department of Immunology and Oncode Institute, Leiden University Medical Center, Leiden, Netherlands
| | - Julia Busselaar
- Department of Immunology and Oncode Institute, Leiden University Medical Center, Leiden, Netherlands
| | - Thomas W. Battaglia
- Division of Molecular Oncology and Immunology and Oncode Institute, The Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Mo D. Staal
- Department of Immunology and Oncode Institute, Leiden University Medical Center, Leiden, Netherlands
| | - Inge Verbrugge
- Division of Tumor Biology and Immunology and Oncode Institute, The Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Jannie Borst
- Department of Immunology and Oncode Institute, Leiden University Medical Center, Leiden, Netherlands
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3
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Guo C, Chi H. Immunometabolism of dendritic cells in health and disease. Adv Immunol 2023; 160:83-116. [PMID: 38042587 PMCID: PMC11086980 DOI: 10.1016/bs.ai.2023.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2023]
Abstract
Dendritic cells (DCs) are crucial mediators that bridge the innate and adaptive immune responses. Cellular rewiring of metabolism is an emerging regulator of the activation, migration, and functional specialization of DC subsets in specific microenvironments and immunological conditions. DCs undergo metabolic adaptation to exert immunogenic or tolerogenic effects in different contexts. Also, beyond their intracellular metabolic and signaling roles, metabolites and nutrients mediate the intercellular crosstalk between DCs and other cell types, and such crosstalk orchestrates DC function and immune responses. Here, we provide a comprehensive review of the metabolic regulation of DC biology in various contexts and summarize the current understanding of such regulation in directing immune homeostasis and inflammation, specifically with respect to infections, autoimmunity, tolerance, cancer, metabolic diseases, and crosstalk with gut microbes. Understanding context-specific metabolic alterations in DCs may identify mechanisms for physiological and pathological functions of DCs and yield potential opportunities for therapeutic targeting of DC metabolism in many diseases.
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Affiliation(s)
- Chuansheng Guo
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, United States
| | - Hongbo Chi
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, United States.
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4
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Feng M, Wang X, Zhou S, Li M, Liu T, Wei X, Lin W. CD83 + B cells alleviate uveitis through inhibiting DCs by sCD83. Immunology 2023; 170:134-153. [PMID: 37137669 DOI: 10.1111/imm.13654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 04/18/2023] [Indexed: 05/05/2023] Open
Abstract
Soluble CD83 (sCD83) exerts immunosuppressive functions in many autoimmune diseases, including experimental autoimmune uveitis (EAU), but the cells and mechanisms involved are unclear. This study showed that CD83+ B cells were the main sources of sCD83. They alleviated the symptoms of EAU and decreased the percentage of T cells and DCs in the eyes and lymph nodes. These CD83+ B cells decreased IL-1β, IL-18 and IFN-γ secretion by DCs through sCD83. sCD83 interacted with GTPase Ras-related protein (Rab1a) in DCs to promote Rab1a accumulation in autolysosomes and inhibit mTORC1 phosphorylation and NLRP3 expression. Hence, CD83+ B cells play a regulatory role in EAU by secreting sCD83. The lack of regulation of CD83+ B cells might be an important factor leading to hyperimmune activation in patients with autoimmune uveitis. CD83+ B cells suppress activated DCs in uveitis, indicating the potential therapeutic role of CD83+ B cells in uveitis.
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Affiliation(s)
- Meng Feng
- Department of Rheumatology and Autoimmunology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
- School of Clinical and Basic Medicine, Shandong First Medical University &Shandong Academy of Medical Sciences, Jinan, China
- Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Shandong Medicine and Health Key Laboratory of Rheumatism, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Xin Wang
- Department of Clinical Laboratory, Qilu Hospital, Shandong University, Jinan, China
- Shandong Engineering Research Center of Biomarker and Artificial Intelligence Application, Jinan, China
| | - Shuping Zhou
- Department of Rheumatology and Autoimmunology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
- School of Clinical and Basic Medicine, Shandong First Medical University &Shandong Academy of Medical Sciences, Jinan, China
- Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Shandong Medicine and Health Key Laboratory of Rheumatism, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Minghao Li
- Department of Rheumatology and Autoimmunology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
- School of Clinical and Basic Medicine, Shandong First Medical University &Shandong Academy of Medical Sciences, Jinan, China
- Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Shandong Medicine and Health Key Laboratory of Rheumatism, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Tingting Liu
- Shandong Eye Hospital, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Xunbin Wei
- Biomedical Engineering Department, Peking University, Beijing, China
- School of Biomedical Engineering, Anhui Medical University, Hefei, China
- Institute of Medical Technology, Peking University Health Science Center, Beijing, China
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital & Institute, Beijing, China
- International Cancer Institute, Peking University, Beijing, China
| | - Wei Lin
- Department of Rheumatology and Autoimmunology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
- School of Clinical and Basic Medicine, Shandong First Medical University &Shandong Academy of Medical Sciences, Jinan, China
- Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Shandong Medicine and Health Key Laboratory of Rheumatism, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
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5
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Liu H, Zhang Y, Li H, Gao X, Wang J, Cong X, Xin Y, Zhu Q, Chen B, Yang YG, Sun T. Co-delivery of vitamin D3 and Lkb1 siRNA by cationic lipid-assisted PEG-PLGA nanoparticles to effectively remodel the immune system in vivo. Biomater Sci 2023; 11:5931-5941. [PMID: 37470222 DOI: 10.1039/d3bm00767g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
The imbalance of the immune system can lead to the occurrence of autoimmune diseases. Controlling and regulating the proliferation and function of effector T (Teff) cells and regulatory T (Treg) cells becomes the key to treating these diseases. Dendritic cells (DCs), as dedicated antigen-presenting cells, play a key role in inducing the differentiation of naive CD4+ T cells. In this study, we designed a cationic lipid-assisted PEG-PLGA nanoparticle (NPs/VD3/siLkb1) to deliver 1,25-dihydroxyvitamin D3 (VD3) and small interfering RNA (siRNA) to DC cells in the draining lymph nodes. By modulating the phenotypic changes of DC cells, this approach expands Treg cells and reduces the occurrence of autoimmune diseases. Thus, this study provides a novel approach to alleviating the occurrence and development of autoimmune diseases while also minimizing the risk of unwanted complications.
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Affiliation(s)
- Haochuan Liu
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Jilin University, Changchun, Jilin, 130061, China.
- Department of Orthopaedics, China-Japan Union Hospital of Jilin University, Changchun, Jilin, 130031, China
| | - Yuning Zhang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Jilin University, Changchun, Jilin, 130061, China.
- International Center of Future Science, Jilin University, Changchun, Jilin, 130015, China
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin, 130062, China
| | - He Li
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Jilin University, Changchun, Jilin, 130061, China.
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin, 130062, China
| | - Xue Gao
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Jilin University, Changchun, Jilin, 130061, China.
| | - Jialiang Wang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Jilin University, Changchun, Jilin, 130061, China.
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin, 130062, China
| | - Xiuxiu Cong
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Jilin University, Changchun, Jilin, 130061, China.
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin, 130062, China
| | - Yanbao Xin
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Jilin University, Changchun, Jilin, 130061, China.
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin, 130062, China
| | - Qingsan Zhu
- Department of Orthopaedics, China-Japan Union Hospital of Jilin University, Changchun, Jilin, 130031, China
| | - Bing Chen
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, 130031, China.
| | - Yong-Guang Yang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Jilin University, Changchun, Jilin, 130061, China.
- International Center of Future Science, Jilin University, Changchun, Jilin, 130015, China
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin, 130062, China
| | - Tianmeng Sun
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Jilin University, Changchun, Jilin, 130061, China.
- International Center of Future Science, Jilin University, Changchun, Jilin, 130015, China
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, Jilin, 130062, China
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, Jilin, 130012, China
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6
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Abstract
Dendritic cells (DCs) are innate immune cells that detect and process environmental signals and communicate them with T cells to bridge innate and adaptive immunity. Immune signals and microenvironmental cues shape the function of DC subsets in different contexts, which is associated with reprogramming of cellular metabolic pathways. In addition to integrating these extracellular cues to meet bioenergetic and biosynthetic demands, cellular metabolism interplays with immune signaling to shape DC-dependent immune responses. Emerging evidence indicates that lipid metabolism serves as a key regulator of DC responses. Here, we summarize the roles of fatty acid and cholesterol metabolism, as well as selective metabolites, in orchestrating the functions of DCs. Specifically, we highlight how different lipid metabolic programs, including de novo fatty acid synthesis, fatty acid β oxidation, lipid storage, and cholesterol efflux, influence DC function in different contexts. Further, we discuss how dysregulation of lipid metabolism shapes DC intracellular signaling and contributes to the impaired DC function in the tumor microenvironment. Finally, we conclude with a discussion on key future directions for the regulation of DC biology by lipid metabolism. Insights into the connections between lipid metabolism and DC functional specialization may facilitate the development of new therapeutic strategies for human diseases.
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Affiliation(s)
- Zhiyuan You
- Department of Immunology, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA
| | - Hongbo Chi
- Department of Immunology, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA
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7
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Sun Y, Wang B, Hu Q, Zhang H, Lai X, Wang T, Zhao C, Wang J, Zhang X, Niu Q, He B, Jiang E, Shi M, Feng X, Luo Y. Loss of Lkb1 in CD11c + myeloid cells protects mice from diet-induced obesity while enhancing glucose intolerance and IL-17/IFN-γ imbalance. Cell Mol Life Sci 2023; 80:63. [PMID: 36781473 PMCID: PMC9925521 DOI: 10.1007/s00018-023-04707-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 01/04/2023] [Accepted: 01/22/2023] [Indexed: 02/15/2023]
Abstract
Adipose tissue CD11c+ myeloid cell is an independent risk factor associated with obesity and metabolic disorders. However, the underlying molecular basis remains elusive. Here, we demonstrated that liver kinase B1 (Lkb1), a key bioenergetic sensor, is involved in CD11c+ cell-mediated immune responses in diet-induced obesity. Loss of Lkb1 in CD11c+ cells results in obesity resistance but lower glucose tolerance, which accompanies tissue-specific immune abnormalities. The accumulation and CD80's expression of Lkb1 deficient adipose-tissue specific dendritic cells but not macrophages is restrained. Additionally, the balance of IL-17A and IFN-γ remarkably tips towards the latter in fat T cells and CD11c- macrophages. Mechanistically, IFN-γ promotes apoptosis of preadipocytes and inhibits their adipogenesis while IL-17A promotes the adipogenesis in vitro, which might account in part for the fat gain resistant phenotype. In summary, these findings reveal that Lkb1 is essential for fat CD11c+ dendritic cells responding to HFD exposure and provides new insights into the IL-17A/IFN-γ balance in HFD-induced obesity.
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Affiliation(s)
- Yunyan Sun
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300020, China.,Tianjin Institutes of Health Science, Tianjin, 301600, China.,Department of Hematology, Hematology Research Center of Yunnan Province, The First Affiliated Hospital of Kunming Medical University, Kunming, China.,Department of Hematology, Yunnan Cancer Hospital, The Third Affiliated Hospital of Kunming Medical University, Yunnan Cancer Center, Kunming, China
| | - Bing Wang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300020, China.,Tianjin Institutes of Health Science, Tianjin, 301600, China
| | - Qianwen Hu
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300020, China.,Tianjin Institutes of Health Science, Tianjin, 301600, China.,Department of Hematology, Hematology Research Center of Yunnan Province, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Haixiao Zhang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300020, China.,Tianjin Institutes of Health Science, Tianjin, 301600, China
| | - Xun Lai
- Department of Hematology, Yunnan Cancer Hospital, The Third Affiliated Hospital of Kunming Medical University, Yunnan Cancer Center, Kunming, China
| | - Tier Wang
- Department of Hematology, Hematology Research Center of Yunnan Province, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Chunxiao Zhao
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300020, China.,Tianjin Institutes of Health Science, Tianjin, 301600, China
| | - Jiali Wang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300020, China.,Tianjin Institutes of Health Science, Tianjin, 301600, China
| | - Xi Zhang
- Department of Hematology, Yunnan Cancer Hospital, The Third Affiliated Hospital of Kunming Medical University, Yunnan Cancer Center, Kunming, China
| | - Qing Niu
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300020, China.,Tianjin Institutes of Health Science, Tianjin, 301600, China
| | - Baolin He
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300020, China.,Tianjin Institutes of Health Science, Tianjin, 301600, China
| | - Erlie Jiang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300020, China. .,Tianjin Institutes of Health Science, Tianjin, 301600, China.
| | - Mingxia Shi
- Department of Hematology, Hematology Research Center of Yunnan Province, The First Affiliated Hospital of Kunming Medical University, Kunming, China.
| | - Xiaoming Feng
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300020, China. .,Tianjin Institutes of Health Science, Tianjin, 301600, China.
| | - Yuechen Luo
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, 300020, China. .,Tianjin Institutes of Health Science, Tianjin, 301600, China.
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8
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Contreras N, Macías-Camero A, Delgado-Dolset MI. Some OPA once told me "LKB1 is going to rule me": The OPA1-LKB1 axis in immune response. Allergy 2023; 78:1400-1402. [PMID: 36785923 DOI: 10.1111/all.15672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 01/31/2023] [Accepted: 02/08/2023] [Indexed: 02/15/2023]
Affiliation(s)
- Nuria Contreras
- Centre for Metabolomics and Bioanalysis (CEMBIO), Department of Chemistry and Biochemistry, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, Madrid, Spain.,Instituto de Medicina Molecular Aplicada Nemesio Díez (IMMA-NM), Departamento de Ciencias Médicas Básicas, Facultad de Medicina, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, Madrid, Spain
| | - Andrea Macías-Camero
- Centre for Metabolomics and Bioanalysis (CEMBIO), Department of Chemistry and Biochemistry, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, Madrid, Spain.,Instituto de Medicina Molecular Aplicada Nemesio Díez (IMMA-NM), Departamento de Ciencias Médicas Básicas, Facultad de Medicina, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, Madrid, Spain
| | - María Isabel Delgado-Dolset
- Centre for Metabolomics and Bioanalysis (CEMBIO), Department of Chemistry and Biochemistry, Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, Madrid, Spain.,Instituto de Medicina Molecular Aplicada Nemesio Díez (IMMA-NM), Departamento de Ciencias Médicas Básicas, Facultad de Medicina, Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, Madrid, Spain
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9
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Chen J, Liu J, Huang H. Lkb1 loss in regulatory T cells leads to dysregulation of hematopoietic stem cell expansion and differentiation in bone marrow. FEBS Open Bio 2023; 13:270-278. [PMID: 36515008 PMCID: PMC9900093 DOI: 10.1002/2211-5463.13536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/07/2022] [Accepted: 12/12/2022] [Indexed: 12/15/2022] Open
Abstract
The tumor suppressor Lkb1 is known to regulate the expression of forkhead box P3 (Foxp3), thereby maintaining the levels of Foxp3+ regulatory T cells (Treg) that play a crucial role in self-tolerance. However, the effect of Lkb1 in Treg on hematopoietic stem cells (HSCs) in the bone marrow (BM) remains obscure. Here, we demonstrated that conditional deletion of Lkb1 in Treg causes loss of Treg in the BM, which leads to failure of HSC homeostasis and the abnormal expansion. Moreover, the loss of BM Treg results in dysregulation of other developing progenitors/stem cell populations, leading to the defective differentiation of T cells and B cells. In addition, HSC from the BM with Treg loss exhibited poor engraftment efficiency, indicating that loss of Treg leads to irreversible impairment of HSC. Collectively, these results demonstrated the essential role of Lkb1 in Treg for maintaining HSC homeostasis and differentiation in mice. These findings provide insight into the mechanisms of HSC regulation and guidance for a strategy to improve the outcomes and reduce complications of HSC transplantation.
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Affiliation(s)
- Jiadi Chen
- Clinical LaboratoryFujian Medical University Union HospitalFuzhouChina
| | - Jingru Liu
- Central LaboratoryFujian Medical University Union HospitalFuzhouChina
| | - Huifang Huang
- Central LaboratoryFujian Medical University Union HospitalFuzhouChina
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10
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Wu L, Yan Z, Jiang Y, Chen Y, Du J, Guo L, Xu J, Luo Z, Liu Y. Metabolic regulation of dendritic cell activation and immune function during inflammation. Front Immunol 2023; 14:1140749. [PMID: 36969180 PMCID: PMC10030510 DOI: 10.3389/fimmu.2023.1140749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/03/2023] [Indexed: 03/29/2023] Open
Abstract
Dendritic cells (DCs) are antigen-presenting cells that bridge innate and adaptive immune responses. Multiple cell types, including DCs, rely on cellular metabolism to determine their fate. DCs substantially alter cellular metabolic pathways during activation, such as oxidative phosphorylation, glycolysis, fatty acid and amino acid metabolism, which have crucial implications for their functionality. In this review, we summarize and discuss recent progress in DC metabolic studies, focusing on how metabolic reprogramming influences DC activation and functionality and the potential metabolic differences among DC subsets. Improving the understanding of the relationship between DC biology and metabolic regulation may provide promising therapeutic targets for immune-mediated inflammatory diseases.
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Affiliation(s)
- Lili Wu
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
- Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Ziqi Yan
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
- Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Yiyang Jiang
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
- Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Yingyi Chen
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
- Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Juan Du
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
- Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Lijia Guo
- Department of Orthodontics School of Stomatology, Capital Medical University, Beijing, China
| | - Junji Xu
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
- Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Zhenhua Luo
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
- Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
- *Correspondence: Zhenhua Luo, ; Yi Liu,
| | - Yi Liu
- Laboratory of Tissue Regeneration and Immunology and Department of Periodontics, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
- Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
- *Correspondence: Zhenhua Luo, ; Yi Liu,
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11
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Low-dose decitabine modulates myeloid-derived suppressor cell fitness via LKB1 in immune thrombocytopenia. Blood 2022; 140:2818-2834. [PMID: 36037415 DOI: 10.1182/blood.2022016029] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 08/11/2022] [Accepted: 08/11/2022] [Indexed: 01/05/2023] Open
Abstract
Myeloid-derived suppressor cells (MDSCs) are heterogeneous immature cells and natural inhibitors of adaptive immunity. Metabolic fitness of MDSCs is fundamental for its suppressive activity toward effector T cells. Our previous studies showed that the number and inhibitory function of MDSCs were impaired in patients with immune thrombocytopenia (ITP) compared with healthy controls. In this study, we analyzed the effects of decitabine on MDSCs from patients with ITP, both in vitro and in vivo. We found that low-dose decitabine promoted the generation of MDSCs and enhanced their aerobic metabolism and immunosuppressive functions. Lower expression of liver kinase 1 (LKB1) was found in MDSCs from patients with ITP, which was corrected by decitabine therapy. LKB1 short hairpin RNA (shRNA) transfection effectively blocked the function of MDSCs and almost offset the enhanced effect of decitabine on impaired MDSCs. Subsequently, anti-CD61 immune-sensitized splenocytes were transferred into severe combined immunodeficient (SCID) mice to induce ITP in murine models. Passive transfer of decitabine-modulated MDSCs significantly raised platelet counts compared with that of phosphate buffered saline-modulated MDSCs. However, when LKB1 shRNA-transfected MDSCs were transferred into SCID mice, the therapeutic effect of decitabine in alleviating thrombocytopenia was quenched. In conclusion, our study suggests that the impaired aerobic metabolism of MDSCs is involved in the pathogenesis of ITP, and the modulatory effect of decitabine on MDSC metabolism contributes to the improvement of its immunosuppressive function. This provides a possible mechanism for sustained remission elicited by low-dose decitabine in patients with ITP.
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12
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Shi Y, Lu Y, You J. Antigen transfer and its effect on vaccine-induced immune amplification and tolerance. Am J Cancer Res 2022; 12:5888-5913. [PMID: 35966588 PMCID: PMC9373810 DOI: 10.7150/thno.75904] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 07/15/2022] [Indexed: 12/13/2022] Open
Abstract
Antigen transfer refers to the process of intercellular information exchange, where antigenic components including nucleic acids, antigen proteins/peptides and peptide-major histocompatibility complexes (p-MHCs) are transmitted from donor cells to recipient cells at the thymus, secondary lymphoid organs (SLOs), intestine, allergic sites, allografts, pathological lesions and vaccine injection sites via trogocytosis, gap junctions, tunnel nanotubes (TNTs), or extracellular vesicles (EVs). In the context of vaccine inoculation, antigen transfer is manipulated by the vaccine type and administration route, which consequently influences, even alters the immunological outcome, i.e., immune amplification and tolerance. Mainly focused on dendritic cells (DCs)-based antigen receptors, this review systematically introduces the biological process, molecular basis and clinical manifestation of antigen transfer.
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Affiliation(s)
- Yingying Shi
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, Zhejiang, China
| | - Yichao Lu
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, Zhejiang, China
| | - Jian You
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, Zhejiang, China
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13
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Wilson KR, Gressier E, McConville MJ, Bedoui S. Microbial Metabolites in the Maturation and Activation of Dendritic Cells and Their Relevance for Respiratory Immunity. Front Immunol 2022; 13:897462. [PMID: 35880171 PMCID: PMC9307905 DOI: 10.3389/fimmu.2022.897462] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 06/10/2022] [Indexed: 12/12/2022] Open
Abstract
The respiratory tract is a gateway for viruses and bacteria from the external environment to invade the human body. Critical to the protection against these invaders are dendritic cells (DCs) - a group of highly specialized myeloid cells that monitors the lung microenvironment and relays contextual and antigenic information to T cells. Following the recognition of danger signals and/or pathogen molecular associated patterns in the lungs, DCs undergo activation. This process arms DCs with the unique ability to induce the proliferation and differentiation of T cells responding to matching antigen in complex with MHC molecules. Depending on how DCs interact with T cells, the ensuing T cell response can be tolerogenic or immunogenic and as such, the susceptibility and severity of respiratory infections is influenced by the signals DCs receive, integrate, and then convey to T cells. It is becoming increasingly clear that these facets of DC biology are heavily influenced by the cellular components and metabolites produced by the lung and gut microbiota. In this review, we discuss the roles of different DC subsets in respiratory infections and outline how microbial metabolites impact the development, propensity for activation and subsequent activation of DCs. In particular, we highlight these concepts in the context of respiratory immunity.
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Affiliation(s)
- Kayla R. Wilson
- Department of Microbiology and Immunology at the Peter Doherty Institute for Infection and Immunity, University of Melbourne, Parkville, VIC, Australia
- *Correspondence: Kayla R. Wilson,
| | - Elise Gressier
- Department of Microbiology and Immunology at the Peter Doherty Institute for Infection and Immunity, University of Melbourne, Parkville, VIC, Australia
| | - Malcolm J. McConville
- Department of Biochemistry and Pharmacology, Bio21 Institute of Molecular Science and Biotechnology, University of Melbourne, Melbourne, VIC, Australia
| | - Sammy Bedoui
- Department of Microbiology and Immunology at the Peter Doherty Institute for Infection and Immunity, University of Melbourne, Parkville, VIC, Australia
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14
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Pelgrom LR, Patente TA, Otto F, Nouwen LV, Ozir-Fazalalikhan A, van der Ham AJ, van der Zande HJP, Heieis GA, Arens R, Everts B. mTORC1 signaling in antigen-presenting cells of the skin restrains CD8 + T cell priming. Cell Rep 2022; 40:111032. [PMID: 35793635 DOI: 10.1016/j.celrep.2022.111032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 04/21/2022] [Accepted: 06/13/2022] [Indexed: 11/29/2022] Open
Abstract
How mechanistic target of rapamycin complex 1 (mTORC1), a key regulator of cellular metabolism, affects dendritic cell (DC) metabolism and T cell-priming capacity has primarily been investigated in vitro, but how mTORC1 regulates this in vivo remains poorly defined. Here, using mice deficient for mTORC1 component raptor in DCs, we find that loss of mTORC1 negatively affects glycolytic and fatty acid metabolism and maturation of conventional DCs, particularly cDC1s. Nonetheless, antigen-specific CD8+ T cell responses to infection are not compromised and are even enhanced following skin immunization. This is associated with increased activation of Langerhans cells and a subpopulation of EpCAM-expressing cDC1s, of which the latter show an increased physical interaction with CD8+ T cells in situ. Together, this work reveals that mTORC1 limits CD8+ T cell priming in vivo by differentially orchestrating the metabolism and immunogenicity of distinct antigen-presenting cell subsets, which may have implications for clinical use of mTOR inhibitors.
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Affiliation(s)
- Leonard R Pelgrom
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
| | - Thiago A Patente
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
| | - Frank Otto
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
| | - Lonneke V Nouwen
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
| | | | - Alwin J van der Ham
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
| | | | - Graham A Heieis
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands
| | - Ramon Arens
- Department of Immunology, Leiden University Medical Center, Leiden, the Netherlands
| | - Bart Everts
- Department of Parasitology, Leiden University Medical Center, Leiden, the Netherlands.
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15
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Sun Y, Zhang Y, Yu H, Wang H, Shao Z, Liu C. Cofilin-1 participates in the hyperfunction of myeloid dendritic cells in patients with severe aplastic anaemia. J Cell Mol Med 2022; 26:3460-3470. [PMID: 35579089 PMCID: PMC9189344 DOI: 10.1111/jcmm.17359] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 04/16/2022] [Accepted: 04/26/2022] [Indexed: 11/28/2022] Open
Abstract
Cofilin‐1 interacts with actin to regulate cell movement. The importance of cofilin‐1 in immunity has been established, and its involvement in a number of autoimmune diseases has been confirmed. However, its role in severe aplastic anaemia (SAA) remains elusive. Thus, the aim of the current study was to investigate the role of cofilin‐1 in patients with SAA. Flow cytometry, Western blotting and real‐time quantitative reverse transcription‐polymerase chain reaction were performed to detect the mRNA and protein expression of cofilin‐1 in myeloid dendritic cells (mDCs) from patients with SAA. The expression of cofilin‐1 was then suppressed via siRNA, and its effects on mDCs and downstream effector T‐cell function were evaluated. Cofilin‐1 expression was higher in mDCs from patients with SAA and correlated with routine blood and immune indexes. Moreover, cofilin‐1 knockdown in mDCs from patients with SAA reduced their phagocytic capacity, migration capacity, and CD86 expression through F‐actin remodelling, downregulating the stimulatory capacity of mDCs on CD4+ and CD8+ T lymphocytes. Collectively, these findings indicate that cofilin‐1 participates in the hyperfunction of mDCs in patients with SAA and that the downregulation of cofilin‐1 in mDCs from patients with SAA could be a novel treatment approach for SAA.
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Affiliation(s)
- Yingying Sun
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - Yu Zhang
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - Hong Yu
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - Huaquan Wang
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - Zonghong Shao
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - Chunyan Liu
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
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16
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Kazmi S, Khan MA, Shamma T, Altuhami A, Assiri AM, Broering DC. Therapeutic nexus of T cell immunometabolism in improving transplantation immunotherapy. Int Immunopharmacol 2022; 106:108621. [DOI: 10.1016/j.intimp.2022.108621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/03/2022] [Accepted: 02/10/2022] [Indexed: 11/26/2022]
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17
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Møller SH, Wang L, Ho PC. Metabolic programming in dendritic cells tailors immune responses and homeostasis. Cell Mol Immunol 2022; 19:370-383. [PMID: 34413487 PMCID: PMC8891341 DOI: 10.1038/s41423-021-00753-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 07/16/2021] [Indexed: 02/07/2023] Open
Abstract
It is being increasingly acknowledged that immune cells depend on certain metabolic traits to perform their functions and that the extracellular environment can influence cell metabolism and vice versa. Dendritic cell (DC) subsets traffic through highly diverse environments from the bone marrow, where they develop, to the various peripheral tissues, where they differentiate and capture antigens, before they migrate to the lymph node to present antigens and prime T cells. It is plausible that DC subsets modulate their stimulatory abilities in response to unique metabolic programming. The metabolic requirements of DCs are just recently being discovered, and subset- and context-specific metabolic phenotypes in DCs are highly intertwined with DC functions. In this review, we present the current knowledge on the intrinsic and extrinsic determinants of DC metabolism, how they regulate DC function with examples from tumor biology and in interaction with the microbiota, and discuss how this can be applied therapeutically.
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Affiliation(s)
- Sofie Hedlund Møller
- grid.9851.50000 0001 2165 4204Department of Fundamental Oncology, University of Lausanne, Lausanne, Switzerland ,grid.9851.50000 0001 2165 4204Ludwig Institute for Cancer Research, University of Lausanne, Epalinges, Switzerland
| | - Limei Wang
- grid.9851.50000 0001 2165 4204Department of Fundamental Oncology, University of Lausanne, Lausanne, Switzerland ,grid.9851.50000 0001 2165 4204Ludwig Institute for Cancer Research, University of Lausanne, Epalinges, Switzerland
| | - Ping-Chih Ho
- grid.9851.50000 0001 2165 4204Department of Fundamental Oncology, University of Lausanne, Lausanne, Switzerland ,grid.9851.50000 0001 2165 4204Ludwig Institute for Cancer Research, University of Lausanne, Epalinges, Switzerland
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18
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Lv N, Jin S, Liang Z, Wu X, Kang Y, Su L, Dong Y, Wang B, Ma T, Shi L. PP2Cδ Controls the Differentiation and Function of Dendritic Cells Through Regulating the NSD2/mTORC2/ACLY Pathway. Front Immunol 2022; 12:751409. [PMID: 35069527 PMCID: PMC8777276 DOI: 10.3389/fimmu.2021.751409] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Accepted: 12/16/2021] [Indexed: 12/29/2022] Open
Abstract
Dendritic cells (DCs) are recognized as a key orchestrator of immune response and homeostasis, deregulation of which may lead to autoimmunity such as experimental autoimmune encephalomyelitis (EAE). Herein we show that the phosphatase PP2Cδ played a pivotal role in regulating DC activation and function, as PP2Cδ ablation caused aberrant maturation, activation, and Th1/Th17-priming of DCs, and hence induced onset of exacerbated EAE. Mechanistically, PP2Cδ restrained the expression of the essential subunit of mTORC2, Rictor, primarily through de-phosphorylating and proteasomal degradation of the methyltransferase NSD2 via CRL4DCAF2 E3 ligase. Loss of PP2Cδ in DCs accordingly sustained activation of the Rictor/mTORC2 pathway and boosted glycolytic and mitochondrial metabolism. Consequently, ATP-citrate lyse (ACLY) was increasingly activated and catalyzed acetyl-CoA for expression of the genes compatible with hyperactivated DCs under PP2Cδ deletion. Collectively, our findings demonstrate that PP2Cδ has an essential role in controlling DCs activation and function, which is critical for prevention of autoimmunity.
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Affiliation(s)
- Nianyin Lv
- Department of Immunology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Sufeng Jin
- Department of Clinical Laboratory, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China.,Key Lab of Inflammation and Immunoregulation, Hangzhou Normal University School of Medicine, Hangzhou, China
| | - Zihao Liang
- Department of Immunology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xiaohui Wu
- Department of Immunology, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yanhua Kang
- Department of Immunology, Nanjing University of Chinese Medicine, Nanjing, China.,Key Lab of Inflammation and Immunoregulation, Hangzhou Normal University School of Medicine, Hangzhou, China
| | - Lan Su
- Institute of Translational Medicine, Zhejiang Shuren University, Hangzhou, China
| | - Yeping Dong
- Institute of Translational Medicine, Zhejiang Shuren University, Hangzhou, China
| | - Bingwei Wang
- College of Medicine and Integrated Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Tonghui Ma
- College of Medicine and Integrated Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Liyun Shi
- Department of Immunology, Nanjing University of Chinese Medicine, Nanjing, China.,Institute of Translational Medicine, Zhejiang Shuren University, Hangzhou, China
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19
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Zhao Q, Han YM, Song P, Liu Z, Yuan Z, Zou MH. Endothelial cell-specific expression of serine/threonine kinase 11 modulates dendritic cell differentiation. Nat Commun 2022; 13:648. [PMID: 35115536 PMCID: PMC8814147 DOI: 10.1038/s41467-022-28316-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 11/29/2021] [Indexed: 11/19/2022] Open
Abstract
In the bone marrow, classical and plasmacytoid dendritic cells (DC) develop from the macrophage-DC precursor (MDP) through a common DC precursor (CDP) step. This developmental process receives essential input from the niche in which it takes place, containing endothelial cells (EC) among other cell types. Here we show that targeted deletion of serine/threonine kinase 11 (Stk11) encoding tumor suppressor liver kinase b1 (Lkb1) in mouse ECs but not DCs, results in disrupted differentiation of MDPs to CDPs, severe reduction in mature DC numbers and spontaneous tumorigenesis. In wild type ECs, Lkb1 phosphorylates polypyrimidine tract binding protein 1 (Ptbp1) at threonine 138, which regulates stem cell factor (Scf) pre-mRNA splicing. In the absence of Lkb1, exon 6 of Scf is spliced out, leading to the loss of Scf secretion. Adeno-associated-virus-mediated delivery of genes encoding either soluble Scf or the phosphomimetic mutant Ptbp1T138E proteins rescued the defects of MDP to CDP differentiation and DC shortage in the endothelium specific Stk11 knockout mice. In summary, endothelial Stk11 expression regulates DC differentiation via modulation of Scf splicing, marking the Stk11-soluble-Scf axis as a potential cause of DC deficiency syndromes.
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Affiliation(s)
- Qiang Zhao
- Center for Molecular and Translational Medicine, Georgia State University, Atlanta, GA, 30303, USA
- Department of Cardiology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Young-Min Han
- Center for Molecular and Translational Medicine, Georgia State University, Atlanta, GA, 30303, USA
| | - Ping Song
- Center for Molecular and Translational Medicine, Georgia State University, Atlanta, GA, 30303, USA
| | - Zhixue Liu
- Center for Molecular and Translational Medicine, Georgia State University, Atlanta, GA, 30303, USA
| | - Zuyi Yuan
- Department of Cardiology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Ming-Hui Zou
- Center for Molecular and Translational Medicine, Georgia State University, Atlanta, GA, 30303, USA.
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20
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Ding JT, Yang KP, Lin KL, Cao YK, Zou F. Mechanisms and therapeutic strategies of immune checkpoint molecules and regulators in type 1 diabetes. Front Endocrinol (Lausanne) 2022; 13:1090842. [PMID: 36704045 PMCID: PMC9871554 DOI: 10.3389/fendo.2022.1090842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 12/22/2022] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Considered a significant risk to health and survival, type 1 diabetes (T1D) is a heterogeneous autoimmune disease characterized by hyperglycemia caused by an absolute deficiency of insulin, which is mainly due to the immune-mediated destruction of pancreatic beta cells. SCOPE OF REVIEW In recent years, the role of immune checkpoints in the treatment of cancer has been increasingly recognized, but unfortunately, little attention has been paid to the significant role they play both in the development of secondary diabetes with immune checkpoint inhibitors and the treatment of T1D, such as cytotoxic T-lymphocyte antigen 4(CTLA-4), programmed cell death protein-1(PD-1), lymphocyte activation gene-3(LAG-3), programmed death ligand-1(PD-L1), and T-cell immunoglobulin mucin protein-3(TIM-3). Here, this review summarizes recent research on the role and mechanisms of diverse immune checkpoint molecules in mediating the development of T1D and their potential and theoretical basis for the prevention and treatment of diabetes. MAJOR CONCLUSIONS Immune checkpoint inhibitors related diabetes, similar to T1D, are severe endocrine toxicity induced with immune checkpoint inhibitors. Interestingly, numerous treatment measures show excellent efficacy for T1D via regulating diverse immune checkpoint molecules, including co-inhibitory and co-stimulatory molecules. Thus, targeting immune checkpoint molecules may exhibit potential for T1D treatment and improve clinical outcomes.
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Affiliation(s)
- Jia-Tong Ding
- Department of Endocrinology and Metabolism, The Second Affiliated Hospital of Nanchang University, Nanchang, China
- The Second Clinical Medicine School, Nanchang University, Nanchang, China
| | - Kang-Ping Yang
- The Second Clinical Medicine School, Nanchang University, Nanchang, China
| | - Kong-Lan Lin
- The Second Clinical Medicine School, Nanchang University, Nanchang, China
| | - Yu-Ke Cao
- School of Ophthalmology & Optometry, Nanchang University, Nanchang, China
| | - Fang Zou
- Department of Endocrinology and Metabolism, The Second Affiliated Hospital of Nanchang University, Nanchang, China
- *Correspondence: Fang Zou,
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21
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Lu Y, Shi Y, You J. Strategy and clinical application of up-regulating cross presentation by DCs in anti-tumor therapy. J Control Release 2021; 341:184-205. [PMID: 34774890 DOI: 10.1016/j.jconrel.2021.11.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 11/04/2021] [Accepted: 11/06/2021] [Indexed: 12/20/2022]
Abstract
The cross presentation of exogenous antigen (Ag) by dendritic cells (DCs) facilitates a diversified mode of T-cell activation, orchestrates specific humoral and cellular immunity, and contributes to an efficient anti-tumor immune response. DCs-mediated cross presentation is subject to both intrinsic and extrinsic factors, including the homing and phenotype of DCs, the spatiotemporal trafficking and degradation kinetics of Ag, and multiple microenvironmental clues, with many details largely unexplored. Here, we systemically review the current mechanistic understanding and regulation strategies of cross presentation by heterogeneous DC populations. We also provide insights into the future exploitation of DCs cross presentation for a better clinical efficacy in anti-tumor therapy.
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Affiliation(s)
- Yichao Lu
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China
| | - Yingying Shi
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China
| | - Jian You
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China.
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22
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Guo WW, Su XH, Wang MY, Han MZ, Feng XM, Jiang EL. Regulatory T Cells in GVHD Therapy. Front Immunol 2021; 12:697854. [PMID: 34220860 PMCID: PMC8250864 DOI: 10.3389/fimmu.2021.697854] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 06/02/2021] [Indexed: 12/25/2022] Open
Abstract
Graft versus host disease (GVHD) is a common complication and the leading cause of morbidity and mortality after allogeneic hematopoietic stem cell transplantation (allo-HSCT). Pharmacological immunosuppression used in GVHD prophylaxis and treatment lacks specificity and can increase the likelihood of infection and relapse. Regulatory T lymphocytes (Tregs) play a vital role in restraining excessive immune responses and inducing peripheral immune tolerance. In particular, clinical trials have demonstrated that Tregs can prevent and treat GVHD, without increasing the risk of relapse and infection. Hence, adoptive transfer of Tregs to control GVHD using their immunosuppressive properties represents a promising therapeutic approach. To optimally apply Tregs for control of GVHD, a thorough understanding of their biology is necessary. In this review, we describe the biological characteristics of Tregs, including how the stability of FOXP3 expression can be maintained. We will also discuss the mechanisms underlying Tregs-mediated modulation of GVHD and approaches to effectively increase Tregs’ numbers. Finally, we will examine the developing trends in the use of Tregs for clinical therapy.
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Affiliation(s)
- Wen-Wen Guo
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Xiu-Hua Su
- School of Medicine, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Ming-Yang Wang
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Ming-Zhe Han
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Xiao-Ming Feng
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Er-Lie Jiang
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
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23
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Chen YR, Li HN, Zhang LJ, Zhang C, He JG. Protein Arginine Methyltransferase 5 Promotes Esophageal Squamous Cell Carcinoma Proliferation and Metastasis via LKB1/AMPK/mTOR Signaling Pathway. Front Bioeng Biotechnol 2021; 9:645375. [PMID: 34124017 PMCID: PMC8193860 DOI: 10.3389/fbioe.2021.645375] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 04/12/2021] [Indexed: 12/31/2022] Open
Abstract
Background: Esophageal squamous cell carcinoma (ESCC) is the eighth most common cancer in the world. Protein arginine methyltransferase 5 (PRMT5), an enzyme that catalyzes symmetric and asymmetric methylation on arginine residues of histone and non-histone proteins, is overexpressed in many cancers. However, whether or not PRMT5 participates in the regulation of ESCC remains largely unclear. Methods: PRMT5 mRNA and protein expression in ESCC tissues and cell lines were examined by RT-PCR, western blotting, and immunohistochemistry assays. Cell proliferation was examined by RT-PCR, western blotting, immunohistochemistry assays, MTT, and EdU assays. Cell apoptosis and cell cycle were examined by RT-PCR, western blotting, immunohistochemistry assays, and flow cytometry. Cell migration and invasion were examined by RT-PCR, western blotting, immunohistochemistry assays, and wound-healing and transwell assays. Tumor volume, tumors, and mouse weight were measured in different groups. Lung tissues with metastatic foci, the number of nodules, and lung/total weight were measured in different groups. Results: In the present study, the PRMT5 expression level was dramatically upregulated in ESCC clinical tissues as well as ESCC cell lines (ECA109 and KYSE150). Furthermore, knocking down PRMT5 obviously suppressed cell migration, invasion, proliferation, and cell arrest in G1 phase and promoted cell apoptosis in ESCC cells. Meanwhile, downregulating PRMT5 also increased the expression levels of Bax, caspase-3, and caspase-9, while expression levels of Bax-2, MMP-2, MMP-9, and p21 were decreased, which are members of the cyclin-dependent kinase family. Furthermore, knocking down PRMT5 could increase the expression of LKB1 and the phosphorylation (p)-AMPK expression and decrease the p-mTOR level. Additionally, overexpression of LKB1 could reveal anti-tumor effects in ESCC cell lines by inhibiting ESCC cell, migration, invasion, and proliferation and accelerating cell apoptosis. Besides, upregulating LKB1 expression could increase the levels of Bax, caspase-3, and caspase-9 and weaken the levels of Bax-2, MMP-2, and MMP-9. Moreover, knocking down PRMT5 could weaken the tumor growth and lung metastasis in vivo with upregulating the LKB1 expression and the p-AMPK level and downregulating the p-mTOR expression. Conclusion: PRMT5 may act as a tumor-inducing agent in ESCC by modulating LKB1/AMPK/mTOR pathway signaling.
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Affiliation(s)
- Yu-Ru Chen
- Department of Oncology, Heze Municipal Hospital, Heze, China
| | - Hua-Ni Li
- Department of Oncology, Heze Municipal Hospital, Heze, China
| | - Lian-Jun Zhang
- Department of Critical Care Medicine, Heze Municipal Hospital, Heze, China
| | - Chong Zhang
- Magnetic Resonance Room, Heze Municipal Hospital, Heze, China
| | - Jin-Guang He
- Department of Oncology, Heze Municipal Hospital, Heze, China
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24
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Pandit M, Timilshina M, Chang JH. LKB1-PTEN axis controls Th1 and Th17 cell differentiation via regulating mTORC1. J Mol Med (Berl) 2021; 99:1139-1150. [PMID: 34003330 DOI: 10.1007/s00109-021-02090-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 05/06/2021] [Accepted: 05/10/2021] [Indexed: 01/09/2023]
Abstract
Immuno-environmental change triggers CD4+ T cell differentiation. T cell specialization activates metabolic signal pathways to meet energy requirements. Defective T cell-intrinsic metabolism can aggravate immunopathology in chronic diseases. Liver kinase B1 (LKB1) deletion in T cell or Treg cell results in systemic inflammatory symptoms, indicating a crucial role of LKB1 in T cells. However, the mechanism underlying the development of inflammation is unclear. In our study, LKB1-deficient T cells were differentiated preferentially into Th1 and Th17 cells in the absence of inflammation. Mechanistically, LKB1 directly binds and phosphorylates phosphatase and tensin homolog (PTEN), an upstream regulator of mammalian target of rapamycin complex 1 (mTORC1), which is independent of AMP-activated protein kinase (AMPK). As a result, LKB1 deficiency was associated with increased mTORC1 activity and hypoxia-inducible factor (HIF)1α-mediated glycolysis. Inhibition of glycolysis or biallelic disruption of LKB1 and HIF1α abrogated this phenotype, suggesting Th1- and Th17-biased differentiation in LKB1-deficient T cells was mediated by glycolysis. Our study indicates that LKB1 controls mTORC1 signaling through PTEN activation, not AMPK, which controls effector T cell differentiation in a T cell-intrinsic manner. KEY MESSAGES: • LKB1 maintains T cell homeostasis in a cell intrinsic manner. • Glycolysis is involved in the LKB1-mediated T cell differentiation. • LKB1 phosphorylates PTEN, not AMPK, to regulate mTORC1.
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Affiliation(s)
- Mahesh Pandit
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | | | - Jae-Hoon Chang
- College of Pharmacy, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
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25
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Minarrieta L, Velasquez LN, Sparwasser T, Berod L. Dendritic cell metabolism: moving beyond in vitro-culture-generated paradigms. Curr Opin Biotechnol 2021; 68:202-212. [PMID: 33517147 DOI: 10.1016/j.copbio.2020.12.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 11/25/2020] [Accepted: 12/14/2020] [Indexed: 12/14/2022]
Abstract
Dendritic cells (DCs) are key orchestrators of immunity and tolerance. It has become evident that DC function can be influenced by cellular metabolic programs. However, conclusions from early metabolic studies using in vitro GM-CSF DC cultures fail to correlate with bona fide DC populations. Here, we discuss the existing paradigms in the DC metabolism field, focusing on the limitations of the models utilized. Furthermore, we introduce alternative models to generate DCs in vitro that better emulate DCs found in vivo. Finally, we highlight new techniques to evaluate DC metabolism at the single-cell level. The combination of these two strategies could help advance the DC metabolism field towards a more physiological understanding, which is crucial for the development of effective DC-based therapies.
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Affiliation(s)
- Lucía Minarrieta
- Ottawa Institute of Systems Biology, Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, K1H 8M5, Canada
| | - Lis Noelia Velasquez
- Institute of Medical Microbiology and Hygiene, University Medical Centre of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Tim Sparwasser
- Institute of Medical Microbiology and Hygiene, University Medical Centre of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Luciana Berod
- Institute of Molecular Medicine, University Medical Centre of the Johannes Gutenberg-University Mainz, Mainz, Germany.
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26
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Zhang Y, Meng Q, Sun Q, Xu ZX, Zhou H, Wang Y. LKB1 deficiency-induced metabolic reprogramming in tumorigenesis and non-neoplastic diseases. Mol Metab 2020; 44:101131. [PMID: 33278637 PMCID: PMC7753952 DOI: 10.1016/j.molmet.2020.101131] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Revised: 11/22/2020] [Accepted: 11/26/2020] [Indexed: 02/07/2023] Open
Abstract
Background Live kinase B1 (LKB1) is a tumor suppressor that is mutated in Peutz-Jeghers syndrome (PJS) and a variety of cancers. Lkb1 encodes serine-threonine kinase (STK) 11 that activates AMP-activated protein kinase (AMPK) and its 13 superfamily members, regulating multiple biological processes, such as cell polarity, cell cycle arrest, embryo development, apoptosis, and bioenergetics metabolism. Increasing evidence has highlighted that deficiency of LKB1 in cancer cells induces extensive metabolic alterations that promote tumorigenesis and development. LKB1 also participates in the maintenance of phenotypes and functions of normal cells through metabolic regulation. Scope of review Given the important role of LKB1 in metabolic regulation, we provide an overview of the association of metabolic alterations in glycolysis, aerobic oxidation, the pentose phosphate pathway (PPP), gluconeogenesis, glutamine, lipid, and serine induced by aberrant LKB1 signals in tumor progression, non-neoplastic diseases, and functions of immune cells. Major conclusions In this review, we summarize layers of evidence demonstrating that disordered metabolisms in glucose, glutamine, lipid, and serine caused by LKB1 deficiency promote carcinogenesis and non-neoplastic diseases. The metabolic reprogramming resulting from the loss of LKB1 confers cancer cells with growth or survival advantages. Nevertheless, it also causes a metabolic frangibility for LKB1-deficient cancer cells. The metabolic regulation of LKB1 also plays a vital role in maintaining cellular phenotype in the progression of non-neoplastic diseases. In addition, lipid metabolic regulation of LKB1 plays an important role in controlling the function, activity, proliferation, and differentiation of several types of immune cells. We conclude that in-depth knowledge of metabolic pathways regulated by LKB1 is conducive to identifying therapeutic targets and developing drug combinations to treat cancers and metabolic diseases and achieve immunoregulation.
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Affiliation(s)
- Yanghe Zhang
- Key Laboratory of Pathobiology, Ministry of Education, Jilin University, Changchun, 130021, China
| | - Qingfei Meng
- Key Laboratory of Pathobiology, Ministry of Education, Jilin University, Changchun, 130021, China
| | - Qianhui Sun
- School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Zhi-Xiang Xu
- Key Laboratory of Pathobiology, Ministry of Education, Jilin University, Changchun, 130021, China; School of Life Sciences, Henan University, Kaifeng, 475004, China.
| | - Honglan Zhou
- Department of Urology, First Hospital of Jilin University, Changchun, 130021, China.
| | - Yishu Wang
- Key Laboratory of Pathobiology, Ministry of Education, Jilin University, Changchun, 130021, China.
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27
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Krivosheeva IA, Filatova AY, Moshkovskii SA, Baranova AV, Skoblov MY. Analysis of candidate genes expected to be essential for melanoma surviving. Cancer Cell Int 2020; 20:488. [PMID: 33041669 PMCID: PMC7541296 DOI: 10.1186/s12935-020-01584-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 09/28/2020] [Indexed: 11/10/2022] Open
Abstract
Introduction Cancers may be treated by selective targeting of the genes vital for their survival. A number of attempts have led to discovery of several genes essential for surviving of tumor cells of different types. In this work, we tried to analyze genes that were previously predicted to be essential for melanoma surviving. Here we present the results of transient siRNA-mediated knockdown of the four of such genes, namely, UNC45A, STK11IP, RHPN2 and ZNFX1, in melanoma cell line A375, then assayed the cells for their viability, proliferation and ability to migrate in vitro. In our study, the knockdown of the genes predicted as essential for melanoma survival does not lead to statistically significant changes in cell viability. On the other hand, for each of the studied genes, mobility assays showed that the knockdown of each of the target genes accelerates the speed of cells migrating. Possible explanation for such counterintuitive results may include insufficiency of the predicting computational models or the necessity of a multiplex knockdown of the genes. Aims To examine the hypothesis of essentiality of hypomutated genes for melanoma surviving we have performed knockdown of several genes in melanoma cell line and analyzed cell viability and their ability to migrate. Methods Knockdown was performed by siRNAs transfected by Metafectene PRO. The levels of mRNAs before and after knockdown were evaluated by RT-qPCR analysis. Cell viability and proliferation were assessed by MTT assay. Cell migration was assessed by wound healing assay. Results The knockdown of the genes predicted as essential for melanoma survival does not lead to statistically significant changes in cell viability. On the other hand, for each of the studied genes, mobility assays showed that the knockdown of each of the target genes accelerates the speed of cells migrating. Conclusion Our results do not confirm initial hypothesis that the genes predicted essential for melanoma survival as a matter of fact support the survival of melanoma cells.
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Affiliation(s)
- Irina A Krivosheeva
- Laboratory of Functional Genomics, Research Centre of Medical Genetics, Erevanskaya Street, 10 building 2, Floor 44, Moscow, 115304 Russia
| | - Alexandra Yu Filatova
- Laboratory of Functional Genomics, Research Centre of Medical Genetics, Erevanskaya Street, 10 building 2, Floor 44, Moscow, 115304 Russia
| | - Sergei A Moshkovskii
- Laboratory of Medical Proteomics, Institute of Biomedical Chemistry, Moscow, Russia
| | - Ancha V Baranova
- School of Systems Biology, George Mason University, Fairfax, VA USA.,Laboratory of Functional Genomics, Research Centre of Medical Genetics, Erevanskaya Street, 10 building 2, Floor 44, Moscow, 115304 Russia
| | - Mikhail Yu Skoblov
- Laboratory of Functional Genomics, Research Centre of Medical Genetics, Erevanskaya Street, 10 building 2, Floor 44, Moscow, 115304 Russia
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28
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Li C, Jiang P, Wei S, Xu X, Wang J. Regulatory T cells in tumor microenvironment: new mechanisms, potential therapeutic strategies and future prospects. Mol Cancer 2020; 19:116. [PMID: 32680511 PMCID: PMC7367382 DOI: 10.1186/s12943-020-01234-1] [Citation(s) in RCA: 374] [Impact Index Per Article: 93.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 07/06/2020] [Indexed: 12/12/2022] Open
Abstract
Regulatory T cells (Tregs) characterized by the expression of the master transcription factor forkhead box protein p3 (Foxp3) suppress anticancer immunity, thereby hindering protective immunosurveillance of tumours and hampering effective antitumour immune responses in tumour-bearing hosts, constitute a current research hotspot in the field. However, Tregs are also essential for the maintenance of the immune tolerance of the body and share many molecular signalling pathways with conventional T cells, including cytotoxic T cells, the primary mediators of tumour immunity. Hence, the inability to specifically target and neutralize Tregs in the tumour microenvironment without globally compromising self-tolerance poses a significant challenge. Here, we review recent advances in characterizing tumour-infiltrating Tregs with a focus on the functional roles of costimulatory and inhibitory receptors in Tregs, evaluate their potential as clinical targets, and systematically summarize their roles in potential treatment strategies. Also, we propose modalities to integrate our increasing knowledge on Tregs phenotype and function for the rational design of checkpoint inhibitor-based combination therapies. Finally, we propose possible treatment strategies that can be used to develop Treg-targeted therapies.
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Affiliation(s)
- Chunxiao Li
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, 100191, China.
| | - Ping Jiang
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, 100191, China
| | - Shuhua Wei
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, 100191, China
| | - Xiaofei Xu
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, 100191, China
- National Clinical Research Center for Obstetrics and Gynecology, Key Laboratory of Assisted Reproduction, Ministry of Education, Peking University, Beijing, 100191, China
| | - Junjie Wang
- Department of Radiation Oncology, Peking University Third Hospital, Beijing, 100191, China.
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29
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Chen J, Zhou Y, Chen S, Liu M, Guo W, Wang Q, Su X, Zhao C, Han Z, Feng X, Huang H. Lkb1 in dendritic cells restricts CD8 +Foxp3 +regulatory T cells expansion in vivo. Exp Cell Res 2019; 384:111650. [PMID: 31563695 DOI: 10.1016/j.yexcr.2019.111650] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 09/22/2019] [Accepted: 09/25/2019] [Indexed: 12/12/2022]
Abstract
Liver kinase B1 (Lkb1) in dendritic cells (DCs) plays a key role in maintaining immunity homeostasis and adaptive immunity by controlling the CD4+Foxp3+T regulatory cell (CD4+Tregs) pool and T cells activation. However, the function of Lkb1 in DCs for the regulation of CD8+Foxp3+T regulatory cells (CD8+Tregs) has not been addressed. Herein, we found that Lkb1-deficient DCs could lead to excessive CD8+Tregs expansion in multiple organs. We found that OX40 expression was significantly higher in Lkb1-deficient DCs compared with that in wild-type (WT) mice, suggesting a potential pathway of CD8+Treg expansion. Moreover, we found that CD8+Tregs from mice with conditional deletion Lkb1 in DCs (KO) displayed an activated phenotype and expressed higher levels of specific markers, including ICOS and CD103. Interestingly, compared with the WT mice without lipopolysaccharide(LPS) treatment, we found that CD8+Tregs population increased in the WT mice with LPS treatment which can selectively delete Lkb1 protein in DCs. However, there was no significant difference in CD8+Tregs population in the KO mice between LPS treatment group and non-LPS treatment. Collectively, our findings identified Lkb1 in DCs as a crucial regulator of CD8+Treg expansion.
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Affiliation(s)
- Jiadi Chen
- Fujian Medical University, Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Fujian Medical University Union Hospital, Fuzhou, China
| | - Yushan Zhou
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China
| | - Song Chen
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China
| | - Maolan Liu
- Department of Hematology, The First Affiliated Hospital of Kunming Medical University, Hematology Research Center of Yunnan Province, Kunming, 650032, China
| | - Wei Guo
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China
| | - Qianqian Wang
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China
| | - Xiuhua Su
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China
| | - Chunxiao Zhao
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China
| | - Zhongchao Han
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China
| | - Xiaoming Feng
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Hospital of Blood Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China.
| | - Huifang Huang
- Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, China.
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30
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Wculek SK, Sancho D. LKB1 restrains dendritic cell function. Cell Res 2019; 29:429-431. [PMID: 31024168 PMCID: PMC6796839 DOI: 10.1038/s41422-019-0169-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Stefanie K Wculek
- Immunobiology laboratory, Fundación Centro Nacional de Investigaciones Cardiovasculares "Carlos III" (CNIC), Madrid, Spain
| | - David Sancho
- Immunobiology laboratory, Fundación Centro Nacional de Investigaciones Cardiovasculares "Carlos III" (CNIC), Madrid, Spain.
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