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Ghosh S, Dutta R, Ghatak D, Goswami D, De R. Immunometabolic characteristics of Dendritic Cells and its significant modulation by mitochondria-associated signaling in the tumor microenvironment influence cancer progression. Biochem Biophys Res Commun 2024; 726:150268. [PMID: 38909531 DOI: 10.1016/j.bbrc.2024.150268] [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: 04/22/2024] [Revised: 05/27/2024] [Accepted: 06/14/2024] [Indexed: 06/25/2024]
Abstract
Dendritic cells (DCs) mediated T-cell responses is critical to anti-tumor immunity. This study explores immunometabolic attributes of DC, emphasizing on mitochondrial association, in Tumor Microenvironment (TME) that regulate cancer progression. Conventional DC subtypes cross-present tumor-associated antigens to activate lymphocytes. However, plasmacytoid DCs participate in both pro- and anti-tumor signaling where mitochondrial reactive oxygen species (mtROS) play crucial role. CTLA-4, CD-47 and other surface-receptors of DC negatively regulates T-cell. Increased glycolysis-mediated mitochondrial citrate buildup and translocation to cytosol with augmented NADPH, enhances mitochondrial fatty acid synthesis fueling DCs. Different DC subtypes and stages, exhibit variable mitochondrial content, membrane potential, structural dynamics and bioenergetic metabolism regulated by various cytokine stimulation, e.g., GM-CSF, IL-4, etc. CD8α+ cDC1s augmented oxidative phosphorylation (OXPHOS) which diminishes at advance effector stages. Glutaminolysis in mitochondria supplement energy in DCs but production of kynurenine and other oncometabolites leads to immunosuppression. Mitochondria-associated DAMPs cause activation of cGAS-STING pathway and inflammasome oligomerization stimulating DC and T cells. In this study, through a comprehensive survey and critical analysis of the latest literature, the potential of DC metabolism for more effective tumor therapy is highlighted. This underscores the need for future research to explore specific therapeutic targets and potential drug candidates.
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Affiliation(s)
- Sayak Ghosh
- Amity Institute of Biotechnology, Amity University Kolkata, Plot No: 36, 37 & 38, Major Arterial Road, Action Area II, Kadampukur Village, Newtown, Kolkata, 700135, West Bengal, India
| | - Rittick Dutta
- Swami Vivekananda University, Kolkata, 700121, West Bengal, India
| | - Debapriya Ghatak
- Indian Association for the Cultivation of Science, Jadavpur, Kolkata, 700032, West Bengal, India
| | - Devyani Goswami
- Amity Institute of Biotechnology, Amity University Kolkata, Plot No: 36, 37 & 38, Major Arterial Road, Action Area II, Kadampukur Village, Newtown, Kolkata, 700135, West Bengal, India
| | - Rudranil De
- Amity Institute of Biotechnology, Amity University Kolkata, Plot No: 36, 37 & 38, Major Arterial Road, Action Area II, Kadampukur Village, Newtown, Kolkata, 700135, West Bengal, India.
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2
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Wixler V, Boergeling Y, Leite Dantas R, Varga G, Ludwig S. Conversion of dendritic cells into tolerogenic or inflammatory cells depends on the activation threshold and kinetics of the mTOR signaling pathway. Cell Commun Signal 2024; 22:281. [PMID: 38773618 PMCID: PMC11106905 DOI: 10.1186/s12964-024-01655-1] [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: 02/10/2024] [Accepted: 05/08/2024] [Indexed: 05/24/2024] Open
Abstract
BACKGROUND Restoring impaired peripheral immune tolerance is the primary challenge in treating autoimmune diseases. Our previous research demonstrated the effectiveness of small spleen peptides (SSPs), a fraction of low molecular weight proteins, in inhibiting the progression of psoriatic arthritis, even in the presence of high levels of the proinflammatory cytokine TNFα in the bloodstream. When specifically targeting dendritic cells (DCs), SSPs transform them into tolerogenic cells, which efficiently induce the development of regulatory Foxp3+ Treg cells. In this study, we provide further insights into the mechanism of action of SSPs. RESULTS We found that SSPs stimulate the activation of the mTOR signaling pathway in dendritic cells, albeit in a different manner than the classical immunogenic stimulus LPS. While LPS-induced activation is rapid, strong, and sustained, the activity induced by SSPs is delayed, less intense, yet still significant. These distinct patterns of activation, as measured by phosphorylation of key components of the pathway are also observed in response to other immunogenic and tolerogenic stimuli such as GM-CSF + IL-4 or IL-10 and TGFβ. The disparity in mTOR activation between immunogenic and tolerogenic stimuli is quantitative rather than qualitative. In both cases, mTOR activation primarily occurs through the PI3K/Akt signaling axis and involves ERK and GSK3β kinases, with minimal involvement of AMPK or NF-kB pathways. Furthermore, in the case of SSPs, mTOR activation seems to involve adenosine receptors. Additionally, we observed that DCs treated with SSPs exhibit an energy metabolism with high plasticity, which is typical of tolerogenic cells rather than immunogenic cells. CONCLUSION Hence, the decision whether dendritic cells enter an inflammatory or tolerogenic state seems to rely on varying activation thresholds and kinetics of the mTOR signaling pathway.
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Affiliation(s)
- Viktor Wixler
- Institute of Molecular Virology, Centre for Molecular Biology of Inflammation (ZMBE), Westfaelische Wilhelms- University, Von-Esmarch-Str. 56, 48149, Muenster, Germany.
| | - Yvonne Boergeling
- Institute of Molecular Virology, Centre for Molecular Biology of Inflammation (ZMBE), Westfaelische Wilhelms- University, Von-Esmarch-Str. 56, 48149, Muenster, Germany
| | - Rafael Leite Dantas
- Institute of Molecular Virology, Centre for Molecular Biology of Inflammation (ZMBE), Westfaelische Wilhelms- University, Von-Esmarch-Str. 56, 48149, Muenster, Germany
- Department of Mental Health, Westfaelische Wilhelms-University, 48149, Muenster, Germany
| | - Georg Varga
- Pediatric Rheumatology and Immunology, University Children's Hospital Muenster, 48149, Muenster, Germany
| | - Stephan Ludwig
- Institute of Molecular Virology, Centre for Molecular Biology of Inflammation (ZMBE), Westfaelische Wilhelms- University, Von-Esmarch-Str. 56, 48149, Muenster, Germany
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Lan X, Zhang J, Ren S, Wang H, Shao B, Qin Y, Qin H, Sun C, Zhu Y, Li G, Wang H. Oxymatrine combined with rapamycin to attenuate acute cardiac allograft rejection. Heliyon 2024; 10:e29448. [PMID: 38655317 PMCID: PMC11036008 DOI: 10.1016/j.heliyon.2024.e29448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 04/08/2024] [Accepted: 04/08/2024] [Indexed: 04/26/2024] Open
Abstract
Background and aim Solid organ transplantation remains a life-saving therapeutic option for patients with end-stage organ dysfunction. Acute cellular rejection (ACR), dominated by dendritic cells (DCs) and CD4+ T cells, is a major cause of post-transplant mortality. Inhibiting DC maturation and directing the differentiation of CD4+ T cells toward immunosuppression are keys to inhibiting ACR. We propose that oxymatrine (OMT), a quinolizidine alkaloid, either alone or in combination with rapamycin (RAPA), attenuates ACR by inhibiting the mTOR-HIF-1α pathway. Methods Graft damage was assessed using haematoxylin and eosin staining. Intragraft CD11c+ and CD4+ cell infiltrations were detected using immunohistochemical staining. The proportions of mature DCs, T helper (Th) 1, Th17, and Treg cells in the spleen; donor-specific antibody (DSA) secretion in the serum; mTOR-HIF-1α expression in the grafts; and CD4+ cells and bone marrow-derived DCs (BMDCs) were evaluated using flow cytometry. Results OMT, either alone or in combination with RAPA, significantly alleviated pathological damage; decreased CD4+ and CD11c+ cell infiltration in cardiac allografts; reduced the proportion of mature DCs, Th1 and Th17 cells; increased the proportion of Tregs in recipient spleens; downregulated DSA production; and inhibited mTOR and HIF-1α expression in the grafts. OMT suppresses mTOR and HIF-1α expression in BMDCs and CD4+ T cells in vitro. Conclusions Our study suggests that OMT-based therapy can significantly attenuate acute cardiac allograft rejection by inhibiting DC maturation and CD4+ T cell responses. This process may be related to the inhibition of the mTOR-HIF-1α signaling pathway by OMT.
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Affiliation(s)
- Xu Lan
- Beijing University of Chinese Medicine Third Affiliated Hospital, Beijing, 100029, China
| | - Jingyi Zhang
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin General Surgery Institute, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin Key Laboratory of Precise Vascular Reconstruction and Organ Function Repair, Tianjin 300052, China
| | - Shaohua Ren
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin General Surgery Institute, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin Key Laboratory of Precise Vascular Reconstruction and Organ Function Repair, Tianjin 300052, China
| | - Hongda Wang
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin General Surgery Institute, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin Key Laboratory of Precise Vascular Reconstruction and Organ Function Repair, Tianjin 300052, China
| | - Bo Shao
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin General Surgery Institute, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin Key Laboratory of Precise Vascular Reconstruction and Organ Function Repair, Tianjin 300052, China
| | - Yafei Qin
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin General Surgery Institute, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin Key Laboratory of Precise Vascular Reconstruction and Organ Function Repair, Tianjin 300052, China
| | - Hong Qin
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin General Surgery Institute, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin Key Laboratory of Precise Vascular Reconstruction and Organ Function Repair, Tianjin 300052, China
| | - Chenglu Sun
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin General Surgery Institute, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin Key Laboratory of Precise Vascular Reconstruction and Organ Function Repair, Tianjin 300052, China
| | - Yanglin Zhu
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin General Surgery Institute, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin Key Laboratory of Precise Vascular Reconstruction and Organ Function Repair, Tianjin 300052, China
| | - Guangming Li
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin General Surgery Institute, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin Key Laboratory of Precise Vascular Reconstruction and Organ Function Repair, Tianjin 300052, China
| | - Hao Wang
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin General Surgery Institute, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Tianjin Key Laboratory of Precise Vascular Reconstruction and Organ Function Repair, Tianjin 300052, China
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Jain R, Krishnan S, Lee S, Amoozgar Z, Subudhi S, Kumar A, Posada J, Lindeman N, Lei P, Duquette M, Roberge S, Huang P, Andersson P, Datta M, Munn L, Fukumura D. Wnt inhibition alleviates resistance to immune checkpoint blockade in glioblastoma. RESEARCH SQUARE 2023:rs.3.rs-3707472. [PMID: 38234841 PMCID: PMC10793505 DOI: 10.21203/rs.3.rs-3707472/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
Wnt signaling plays a critical role in the progression and treatment outcome of glioblastoma (GBM). Here, we identified WNT7b as a heretofore unknown mechanism of resistance to immune checkpoint inhibition (αPD1) in GBM patients and murine models. Acquired resistance to αPD1 was found to be associated with the upregulation of Wnt7b and β-catenin protein levels in GBM in patients and in a clinically relevant, stem-rich GBM model. Combining the porcupine inhibitor WNT974 with αPD1 prolonged the survival of GBM-bearing mice. However, this combination had a dichotomous response, with a subset of tumors showing refractoriness. WNT974 and αPD1 expanded a subset of DC3-like dendritic cells (DCs) and decreased the granulocytic myeloid-derived suppressor cells (gMDSCs) in the tumor microenvironment (TME). By contrast, monocytic MDSCs (mMDSCs) increased, while T-cell infiltration remained unchanged, suggesting potential TME-mediated resistance. Our preclinical findings warrant the testing of Wnt7b/β-catenin combined with αPD1 in GBM patients with elevated Wnt7b/β-catenin signaling.
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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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Panwar V, Singh A, Bhatt M, Tonk RK, Azizov S, Raza AS, Sengupta S, Kumar D, Garg M. Multifaceted role of mTOR (mammalian target of rapamycin) signaling pathway in human health and disease. Signal Transduct Target Ther 2023; 8:375. [PMID: 37779156 PMCID: PMC10543444 DOI: 10.1038/s41392-023-01608-z] [Citation(s) in RCA: 43] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 07/25/2023] [Accepted: 08/14/2023] [Indexed: 10/03/2023] Open
Abstract
The mammalian target of rapamycin (mTOR) is a protein kinase that controls cellular metabolism, catabolism, immune responses, autophagy, survival, proliferation, and migration, to maintain cellular homeostasis. The mTOR signaling cascade consists of two distinct multi-subunit complexes named mTOR complex 1/2 (mTORC1/2). mTOR catalyzes the phosphorylation of several critical proteins like AKT, protein kinase C, insulin growth factor receptor (IGF-1R), 4E binding protein 1 (4E-BP1), ribosomal protein S6 kinase (S6K), transcription factor EB (TFEB), sterol-responsive element-binding proteins (SREBPs), Lipin-1, and Unc-51-like autophagy-activating kinases. mTOR signaling plays a central role in regulating translation, lipid synthesis, nucleotide synthesis, biogenesis of lysosomes, nutrient sensing, and growth factor signaling. The emerging pieces of evidence have revealed that the constitutive activation of the mTOR pathway due to mutations/amplification/deletion in either mTOR and its complexes (mTORC1 and mTORC2) or upstream targets is responsible for aging, neurological diseases, and human malignancies. Here, we provide the detailed structure of mTOR, its complexes, and the comprehensive role of upstream regulators, as well as downstream effectors of mTOR signaling cascades in the metabolism, biogenesis of biomolecules, immune responses, and autophagy. Additionally, we summarize the potential of long noncoding RNAs (lncRNAs) as an important modulator of mTOR signaling. Importantly, we have highlighted the potential of mTOR signaling in aging, neurological disorders, human cancers, cancer stem cells, and drug resistance. Here, we discuss the developments for the therapeutic targeting of mTOR signaling with improved anticancer efficacy for the benefit of cancer patients in clinics.
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Affiliation(s)
- Vivek Panwar
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Shoolini University, Solan, Himachal Pradesh, 173229, India
| | - Aishwarya Singh
- Amity Institute of Molecular Medicine and Stem Cell Research (AIMMSCR), Amity University Uttar Pradesh, Sector-125, Noida, Uttar Pradesh, 201313, India
| | - Manini Bhatt
- Department of Biomedical Engineering, Indian Institute of Technology, Ropar, Punjab, 140001, India
| | - Rajiv K Tonk
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Delhi Pharmaceutical Sciences and Research University (DPSRU), New Delhi, 110017, India
| | - Shavkatjon Azizov
- Laboratory of Biological Active Macromolecular Systems, Institute of Bioorganic Chemistry, Academy of Sciences Uzbekistan, Tashkent, 100125, Uzbekistan
- Faculty of Life Sciences, Pharmaceutical Technical University, 100084, Tashkent, Uzbekistan
| | - Agha Saquib Raza
- Rajive Gandhi Super Speciality Hospital, Tahirpur, New Delhi, 110093, India
| | - Shinjinee Sengupta
- Amity Institute of Molecular Medicine and Stem Cell Research (AIMMSCR), Amity University Uttar Pradesh, Sector-125, Noida, Uttar Pradesh, 201313, India.
| | - Deepak Kumar
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Shoolini University, Solan, Himachal Pradesh, 173229, India.
| | - Manoj Garg
- Amity Institute of Molecular Medicine and Stem Cell Research (AIMMSCR), Amity University Uttar Pradesh, Sector-125, Noida, Uttar Pradesh, 201313, India.
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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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Zhang Q, Luo Y, Zheng Q, Zhao H, Wei X, Li X. Itaconate attenuates autoimmune hepatitis via PI3K/AKT/mTOR pathway-mediated inhibition of dendritic cell maturation and autophagy. Heliyon 2023; 9:e17551. [PMID: 37449121 PMCID: PMC10336503 DOI: 10.1016/j.heliyon.2023.e17551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 06/14/2023] [Accepted: 06/20/2023] [Indexed: 07/18/2023] Open
Abstract
Autoimmune hepatitis (AIH) results from an autoimmune-mediated chronic inflammatory response against liver cells. Defective self-tolerance and dysfunctional dendritic cells (DCs) play a regulatory role in AIH. Itaconate has recently attracted attention in the field of immunometabolism because of its crucial role as an anti-inflammatory metabolite that negatively regulates the inflammatory response. However, the underlying mechanism of itaconate mediation of DCs in AIH remains unclear. In this study, we found that itaconate acts as an anti-inflammatory factor in the liver. Endogenous itaconate levels were significantly increased in mice with S100-induced AIH model and correlated with upregulation of the immune-responsive gene 1 expression. However, the anti-inflammatory response from endogenously itaconate may not represent the effects exogenously-produced itaconate. We investigated the anti-inflammatory response from exogenous itaconate in S100-induced AIH, and our results showed that itaconate treatment attenuated liver histopathological damage, hepatocyte apoptosis, aminotransferase elevation, and IL-6 production in the S100-induced AIH model. In addition, Itaconate decreased glycolysis to suppress the maturation of DCs in the liver and spleen of AIH models, thereby directly regulating differentiation of Th17 and Tregs in vivo. The percentage of Th17 cells among the CD4+ population were decreased and Tregs were increased (P < 0.05). Furthermore, Itaconate-induced bone marrow-derived monocytes suppressed CD4+cells proliferation. In vitro and in vivo, we found that itaconate suppressed autophagy via activating the PI3K/AKT/mTOR signalling pathway in bone marrow-derived DCs and liver tissues. We further investigated the function of Itaconate on DC-specific mTOR-deficient mice. mTOR-deficient DCs augmented inflammatory reactions in mTORDC-/- AIH mice and induced autophagy. MHY1485 (an agonist of mTOR) and itaconate significantly alleviated the inflammatory reaction and autophagy signalling. In conclusion, itaconate ameliorate liver inflammation in S100-induced AIH mice by regulating the PI3K/AKT/mTOR pathway to decrease DCs autophagy and maturation. These results provide insight useful for treating AIH.
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Affiliation(s)
- Qiyu Zhang
- The First School of Clinical Medicine, Lanzhou University, 730000 Lanzhou, China
- Department of General Surgery, The First Hospital of Lanzhou University, 730000 Lanzhou, China
- Hepatopancreatobiliary Surgery Institute of Gansu Province, The First Hospital of Lanzhou University, 730000 Lanzhou, China
| | - Yang Luo
- Key Laboratory of Biotherapy and Regenerative Medicine of Gansu Province, The First Hospital of Lanzhou University, 730000 Lanzhou, China
- Medical Frontier Innovation Research Center, The First Hospital of Lanzhou University, 730000 Lanzhou, China
| | - Qiuxia Zheng
- The First School of Clinical Medicine, Lanzhou University, 730000 Lanzhou, China
| | - Haixia Zhao
- The First School of Clinical Medicine, Lanzhou University, 730000 Lanzhou, China
| | - Xiaofeng Wei
- The First School of Clinical Medicine, Lanzhou University, 730000 Lanzhou, China
- Key Laboratory of Biotherapy and Regenerative Medicine of Gansu Province, The First Hospital of Lanzhou University, 730000 Lanzhou, China
| | - Xun Li
- The First School of Clinical Medicine, Lanzhou University, 730000 Lanzhou, China
- Department of General Surgery, The First Hospital of Lanzhou University, 730000 Lanzhou, China
- Key Laboratory of Biotherapy and Regenerative Medicine of Gansu Province, The First Hospital of Lanzhou University, 730000 Lanzhou, China
- Hepatopancreatobiliary Surgery Institute of Gansu Province, The First Hospital of Lanzhou University, 730000 Lanzhou, China
- Medical Frontier Innovation Research Center, The First Hospital of Lanzhou University, 730000 Lanzhou, China
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9
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Berard AR, Brubaker DK, Birse K, Lamont A, Mackelprang RD, Noël-Romas L, Perner M, Hou X, Irungu E, Mugo N, Knodel S, Muwonge TR, Katabira E, Hughes SM, Levy C, Calienes FL, Lauffenburger DA, Baeten JM, Celum C, Hladik F, Lingappa J, Burgener AD. Vaginal epithelial dysfunction is mediated by the microbiome, metabolome, and mTOR signaling. Cell Rep 2023; 42:112474. [PMID: 37149863 PMCID: PMC10242450 DOI: 10.1016/j.celrep.2023.112474] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 03/15/2023] [Accepted: 04/19/2023] [Indexed: 05/09/2023] Open
Abstract
Bacterial vaginosis (BV) is characterized by depletion of Lactobacillus and overgrowth of anaerobic and facultative bacteria, leading to increased mucosal inflammation, epithelial disruption, and poor reproductive health outcomes. However, the molecular mediators contributing to vaginal epithelial dysfunction are poorly understood. Here we utilize proteomic, transcriptomic, and metabolomic analyses to characterize biological features underlying BV in 405 African women and explore functional mechanisms in vitro. We identify five major vaginal microbiome groups: L. crispatus (21%), L. iners (18%), Lactobacillus (9%), Gardnerella (30%), and polymicrobial (22%). Using multi-omics we show that BV-associated epithelial disruption and mucosal inflammation link to the mammalian target of rapamycin (mTOR) pathway and associate with Gardnerella, M. mulieris, and specific metabolites including imidazole propionate. Experiments in vitro confirm that type strain G. vaginalis and M. mulieris supernatants and imidazole propionate directly affect epithelial barrier function and activation of mTOR pathways. These results find that the microbiome-mTOR axis is a central feature of epithelial dysfunction in BV.
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Affiliation(s)
- Alicia R Berard
- Department of Obstetrics & Gynecology, University of Manitoba, Winnipeg, MB R3E 3P5, Canada; Center for Global Health and Diseases, Department of Pathology, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Douglas K Brubaker
- Weldon School of Biomedical Engineering and Regenstrief Center for Healthcare Engineering, Purdue University, West Lafayette, IN 47907, USA
| | - Kenzie Birse
- Department of Obstetrics & Gynecology, University of Manitoba, Winnipeg, MB R3E 3P5, Canada; Center for Global Health and Diseases, Department of Pathology, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Alana Lamont
- Department of Obstetrics & Gynecology, University of Manitoba, Winnipeg, MB R3E 3P5, Canada
| | - Romel D Mackelprang
- Department of Global Health, University of Washington, Seattle, WA 98105, USA
| | - Laura Noël-Romas
- Department of Obstetrics & Gynecology, University of Manitoba, Winnipeg, MB R3E 3P5, Canada; Center for Global Health and Diseases, Department of Pathology, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Michelle Perner
- Medical Microbiology and Infectious Disease University of Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Xuanlin Hou
- Department of Global Health, University of Washington, Seattle, WA 98105, USA
| | - Elizabeth Irungu
- Partners in Health Research and Development, Kenya Medical Research Institute, Mbagathi Road, Nairobi, Kenya
| | - Nelly Mugo
- Department of Global Health, University of Washington, Seattle, WA 98105, USA; Partners in Health Research and Development, Kenya Medical Research Institute, Mbagathi Road, Nairobi, Kenya
| | - Samantha Knodel
- Department of Obstetrics & Gynecology, University of Manitoba, Winnipeg, MB R3E 3P5, Canada; Center for Global Health and Diseases, Department of Pathology, Case Western Reserve University, Cleveland, OH 44106, USA
| | - Timothy R Muwonge
- Infectious Disease Institute, Makerere University, Makerere, Kampala, Uganda
| | - Elly Katabira
- Infectious Disease Institute, Makerere University, Makerere, Kampala, Uganda
| | - Sean M Hughes
- Department of Obstetrics and Gynecology, University of Washington, Seattle, WA 98195, USA
| | - Claire Levy
- Department of Obstetrics and Gynecology, University of Washington, Seattle, WA 98195, USA
| | | | | | - Jared M Baeten
- Department of Global Health, University of Washington, Seattle, WA 98105, USA; Department of Medicine, University of Washington, Seattle, WA 98195, USA; Department of Epidemiology, University of Washington, Seattle, WA 98195, USA; Gilead Sciences, Foster City, CA 94404, USA
| | - Connie Celum
- Department of Global Health, University of Washington, Seattle, WA 98105, USA; Department of Medicine, University of Washington, Seattle, WA 98195, USA; Department of Epidemiology, University of Washington, Seattle, WA 98195, USA
| | - Florian Hladik
- Department of Obstetrics and Gynecology, University of Washington, Seattle, WA 98195, USA; Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; Department of Medicine, University of Washington, Seattle, WA 98195, USA
| | - Jairam Lingappa
- Department of Global Health, University of Washington, Seattle, WA 98105, USA; Department of Medicine, University of Washington, Seattle, WA 98195, USA; Department of Pediatrics, University of Washington, Seattle, WA 98195, USA
| | - Adam D Burgener
- Department of Obstetrics & Gynecology, University of Manitoba, Winnipeg, MB R3E 3P5, Canada; Center for Global Health and Diseases, Department of Pathology, Case Western Reserve University, Cleveland, OH 44106, USA; Department of Medicine Solna, Karolinska Institutet, Framstegsgatan, 171 64 Solna, Sweden.
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10
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Psarras A, Clarke A. A cellular overview of immunometabolism in systemic lupus erythematosus. OXFORD OPEN IMMUNOLOGY 2023; 4:iqad005. [PMID: 37554724 PMCID: PMC10264559 DOI: 10.1093/oxfimm/iqad005] [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: 02/17/2023] [Revised: 04/16/2023] [Accepted: 05/02/2023] [Indexed: 08/10/2023] Open
Abstract
Systemic lupus erythematosus (SLE) is a complex autoimmune disease, characterized by a breakdown of immune tolerance and the development of autoantibodies against nucleic self-antigens. Immunometabolism is a rapidly expanding scientific field investigating the metabolic programming of cells of the immune system. During the normal immune response, extensive reprogramming of cellular metabolism occurs, both to generate adenosine triphosphate and facilitate protein synthesis, and also to manage cellular stress. Major pathways upregulated include glycolysis, oxidative phosphorylation, the tricarboxylic acid cycle and the pentose phosphate pathway, among others. Metabolic reprogramming also occurs to aid resolution of inflammation. Immune cells of both patients with SLE and lupus-prone mice are characterized by metabolic abnormalities resulting in an altered functional and inflammatory state. Recent studies have described how metabolic reprogramming occurs in many cell populations in SLE, particularly CD4+ T cells, e.g. favouring a glycolytic profile by overactivation of the mechanistic target of rapamycin pathway. These advances have led to an increased understanding of the metabolic changes affecting the inflammatory profile of T and B cells, monocytes, dendritic cells and neutrophils, and how they contribute to autoimmunity and SLE pathogenesis. In the current review, we aim to summarize recent advances in the field of immunometabolism involved in SLE and how these could potentially lead to new therapeutic strategies in the future.
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Affiliation(s)
- Antonios Psarras
- Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, UK
| | - Alexander Clarke
- Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, UK
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11
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Kunst C, Schmid S, Michalski M, Tümen D, Buttenschön J, Müller M, Gülow K. The Influence of Gut Microbiota on Oxidative Stress and the Immune System. Biomedicines 2023; 11:biomedicines11051388. [PMID: 37239059 DOI: 10.3390/biomedicines11051388] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 05/04/2023] [Accepted: 05/05/2023] [Indexed: 05/28/2023] Open
Abstract
The human gastrointestinal tract is home to a complex microbial community that plays an important role in the general well-being of the entire organism. The gut microbiota generates a variety of metabolites and thereby regulates many biological processes, such as the regulation of the immune system. In the gut, bacteria are in direct contact with the host. The major challenge here is to prevent unwanted inflammatory reactions on one hand and on the other hand to ensure that the immune system can be activated when pathogens invade. Here the REDOX equilibrium is of utmost importance. This REDOX equilibrium is controlled by the microbiota either directly or indirectly via bacterial-derived metabolites. A balanced microbiome sorts for a stable REDOX balance, whereas dysbiosis destabilizes this equilibrium. An imbalanced REDOX status directly affects the immune system by disrupting intracellular signaling and promoting inflammatory responses. Here we (i) focus on the most common reactive oxygen species (ROS) and (ii) define the transition from a balanced REDOX state to oxidative stress. Further, we (iii) describe the role of ROS in regulating the immune system and inflammatory responses. Thereafter, we (iv) examine the influence of microbiota on REDOX homeostasis and how shifts in pro- and anti-oxidative cellular conditions can suppress or promote immune responses or inflammation.
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Affiliation(s)
- Claudia Kunst
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology and Infectious Diseases, University Hospital Regensburg, 93053 Regensburg, Bavaria, Germany
| | - Stephan Schmid
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology and Infectious Diseases, University Hospital Regensburg, 93053 Regensburg, Bavaria, Germany
| | - Marlen Michalski
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology and Infectious Diseases, University Hospital Regensburg, 93053 Regensburg, Bavaria, Germany
| | - Deniz Tümen
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology and Infectious Diseases, University Hospital Regensburg, 93053 Regensburg, Bavaria, Germany
| | - Jonas Buttenschön
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology and Infectious Diseases, University Hospital Regensburg, 93053 Regensburg, Bavaria, Germany
| | - Martina Müller
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology and Infectious Diseases, University Hospital Regensburg, 93053 Regensburg, Bavaria, Germany
| | - Karsten Gülow
- Department of Internal Medicine I, Gastroenterology, Hepatology, Endocrinology, Rheumatology and Infectious Diseases, University Hospital Regensburg, 93053 Regensburg, Bavaria, Germany
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12
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Makhijani P, Basso PJ, Chan YT, Chen N, Baechle J, Khan S, Furman D, Tsai S, Winer DA. Regulation of the immune system by the insulin receptor in health and disease. Front Endocrinol (Lausanne) 2023; 14:1128622. [PMID: 36992811 PMCID: PMC10040865 DOI: 10.3389/fendo.2023.1128622] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 02/08/2023] [Indexed: 03/14/2023] Open
Abstract
The signaling pathways downstream of the insulin receptor (InsR) are some of the most evolutionarily conserved pathways that regulate organism longevity and metabolism. InsR signaling is well characterized in metabolic tissues, such as liver, muscle, and fat, actively orchestrating cellular processes, including growth, survival, and nutrient metabolism. However, cells of the immune system also express the InsR and downstream signaling machinery, and there is increasing appreciation for the involvement of InsR signaling in shaping the immune response. Here, we summarize current understanding of InsR signaling pathways in different immune cell subsets and their impact on cellular metabolism, differentiation, and effector versus regulatory function. We also discuss mechanistic links between altered InsR signaling and immune dysfunction in various disease settings and conditions, with a focus on age related conditions, such as type 2 diabetes, cancer and infection vulnerability.
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Affiliation(s)
- Priya Makhijani
- Department of Immunology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Buck Institute for Research in Aging, Novato, CA, United States
| | - Paulo José Basso
- Department of Medical Microbiology and Immunology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Yi Tao Chan
- Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Nan Chen
- Division of Cellular and Molecular Biology, Diabetes Research Group, Toronto General Hospital Research Institute (TGHRI), University Health Network, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Jordan Baechle
- Buck Institute for Research in Aging, Novato, CA, United States
- Buck Artificial Intelligence Platform, Buck Institute for Research on Aging, Novato, CA, United States
| | - Saad Khan
- Department of Immunology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Division of Cellular and Molecular Biology, Diabetes Research Group, Toronto General Hospital Research Institute (TGHRI), University Health Network, Toronto, ON, Canada
| | - David Furman
- Buck Institute for Research in Aging, Novato, CA, United States
- Buck Artificial Intelligence Platform, Buck Institute for Research on Aging, Novato, CA, United States
- Stanford 1, 000 Immunomes Project, Stanford School of Medicine, Stanford University, Stanford, CA, United States
- Instituto de Investigaciones en Medicina Traslacional (IIMT), Universidad Austral, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Pilar, Argentina
| | - Sue Tsai
- Department of Medical Microbiology and Immunology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Daniel A. Winer
- Department of Immunology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Buck Institute for Research in Aging, Novato, CA, United States
- Division of Cellular and Molecular Biology, Diabetes Research Group, Toronto General Hospital Research Institute (TGHRI), University Health Network, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
- Buck Artificial Intelligence Platform, Buck Institute for Research on Aging, Novato, CA, United States
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, United States
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13
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Carey ST, Bridgeman C, Jewell CM. Biomaterial Strategies for Selective Immune Tolerance: Advances and Gaps. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2205105. [PMID: 36638260 PMCID: PMC10015875 DOI: 10.1002/advs.202205105] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 11/08/2022] [Indexed: 05/03/2023]
Abstract
Autoimmunity and allergies affect a large number of people across the globe. Current approaches to these diseases target cell types and pathways that drive disease, but these approaches are not cures and cannot differentiate between healthy cells and disease-causing cells. New immunotherapies that induce potent and selective antigen-specific tolerance is a transformative goal of emerging treatments for autoimmunity and serious allergies. These approaches offer the potential of halting-or even reversing-disease, without immunosuppressive side effects. However, translating successful induction of tolerance to patients is unsuccessful. Biomaterials offer strategies to direct and maximize immunological mechanisms of tolerance through unique capabilities such as codelivery of small molecules or signaling molecules, controlling signal density in key immune tissues, and targeting. While a growing body of work in this area demonstrates success in preclinical animal models, these therapies are only recently being evaluated in human trials. This review will highlight the most recent advances in the use of materials to achieve antigen-specific tolerance and provide commentary on the current state of the clinical development of these technologies.
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Affiliation(s)
- Sean T. Carey
- University of Maryland Fischell Department of BioengineeringUniversity of MarylandCollege ParkMD20742USA
| | - Christopher Bridgeman
- University of Maryland Fischell Department of BioengineeringUniversity of MarylandCollege ParkMD20742USA
| | - Christopher M. Jewell
- University of Maryland Fischell Department of BioengineeringUniversity of MarylandCollege ParkMD20742USA
- US Department of Veterans AffairsVA Maryland Health Care SystemBaltimoreMD21201USA
- Robert E. Fischell Institute for Biomedical DevicesCollege ParkMD20742USA
- Department of Microbiology and ImmunologyUniversity of Maryland Medical SchoolBaltimoreMD21201USA
- Marlene and Stewart Greenebaum Cancer CenterBaltimoreMD21201USA
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14
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Geiger-Schuller K, Eraslan B, Kuksenko O, Dey KK, Jagadeesh KA, Thakore PI, Karayel O, Yung AR, Rajagopalan A, Meireles AM, Yang KD, Amir-Zilberstein L, Delorey T, Phillips D, Raychowdhury R, Moussion C, Price AL, Hacohen N, Doench JG, Uhler C, Rozenblatt-Rosen O, Regev A. Systematically characterizing the roles of E3-ligase family members in inflammatory responses with massively parallel Perturb-seq. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.23.525198. [PMID: 36747789 PMCID: PMC9900845 DOI: 10.1101/2023.01.23.525198] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
E3 ligases regulate key processes, but many of their roles remain unknown. Using Perturb-seq, we interrogated the function of 1,130 E3 ligases, partners and substrates in the inflammatory response in primary dendritic cells (DCs). Dozens impacted the balance of DC1, DC2, migratory DC and macrophage states and a gradient of DC maturation. Family members grouped into co-functional modules that were enriched for physical interactions and impacted specific programs through substrate transcription factors. E3s and their adaptors co-regulated the same processes, but partnered with different substrate recognition adaptors to impact distinct aspects of the DC life cycle. Genetic interactions were more prevalent within than between modules, and a deep learning model, comβVAE, predicts the outcome of new combinations by leveraging modularity. The E3 regulatory network was associated with heritable variation and aberrant gene expression in immune cells in human inflammatory diseases. Our study provides a general approach to dissect gene function.
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15
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Ding Z, Zhang Y. Differentiation and Immunological Function of MDSC-Derived Dendritic Cells. Glob Med Genet 2022; 9:290-299. [PMID: 36567953 PMCID: PMC9771685 DOI: 10.1055/s-0042-1756659] [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: 05/18/2022] [Accepted: 06/06/2022] [Indexed: 12/24/2022] Open
Abstract
Dendritic cells (DCs) play a key role in initiating and regulating immune responses, and in addition to their roles in vivo, DCs are used as natural adjuvants for various tumor vaccines. In vitro, monocytes can be used to induce DCs, but in tumor patients, due to insufficient bone marrow hematopoiesis, extramedullary hematopoiesis and tumor-associated myeloid cells expand, and monocytes mainly exist in the form of myeloid-derived suppressor cells (MDSCs). The purpose of this experiment was to explore the differences in the differentiation and immune function of DCs induced by MDSCs in tumor patients. In a mouse model, we used normal mouse bone marrow cell-derived DCs as control cells, and in a tumor-bearing model, we induced MDSCs in the spleen to generate DCs (MDSC-DCs). Through flow cytometry, we found that the production of MDSC-DCs was significantly higher than that of control mice, and the secretion of interferon-γ of MDSC-DCs was significantly reduced. Through OVA antigen presentation experiments, we found that the antigen presentation ability of MDSC-DCs was significantly decreased. Through adoptive treatment of tumor-bearing mice cells, we found that the antitumor immune function of MDSC-DCs was significantly reduced. After that, we explored the mechanism of the decrease of immune function activity of MDSC-DCs. We determined that the surface markers of MDSC-DCs were changed by flow cytometry. Through flow sorting and RNA sequencing, we found that some pathways and key gene expression in MDSC-DCs were changed. In conclusion, this study found that the immune function of MDSC-DCs decreased and explored the mechanism of the decreased immune function activity.
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Affiliation(s)
- Zequn Ding
- State Key Laboratory of Oncogenes and Related Genes, Renji-Med-X Stem Cell Research Center, Ren Ji Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, PR China,Med-X Research Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Yan Zhang
- State Key Laboratory of Oncogenes and Related Genes, Renji-Med-X Stem Cell Research Center, Ren Ji Hospital, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, PR China,Med-X Research Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China,Address for correspondence Yan Zhang, PhD Med-X Research Institute, School of Biomedical Engineering, Shanghai Jiao Tong UniversityNo.1954 Huashan Road, ShanghaiChina, 200127
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16
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Núñez R, Rodríguez MJ, Lebrón-Martín C, Martín-Astorga MDC, Palomares F, Ramos-Soriano J, Rojo J, Torres MJ, Cañas JA, Mayorga C. Methylation changes induced by a glycodendropeptide immunotherapy and associated to tolerance in mice. Front Immunol 2022; 13:1094172. [PMID: 36643916 PMCID: PMC9832389 DOI: 10.3389/fimmu.2022.1094172] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 11/29/2022] [Indexed: 12/15/2022] Open
Abstract
Introduction Allergen-specific immunotherapy (AIT) is applied as treatment to rise tolerance in patients with food allergies. Although AIT is thoroughly used, the underlying epigenetic events related to tolerant induction are still unknown. Thus, we aim to investigate epigenetic changes that could be related to tolerance in dendritic cells (DCs) from anaphylactic mice to lipid transfer proteins, Pru p 3, in the context of a sublingual immunotherapy (SLIT) with a glycodendropeptide (D1ManPrup3) that has demonstrated tolerant or desensitization responses depending on the treatment dose. Methods Changes in DNA methylation in CpG context were determined comparing Sensitized (Antigen-only) animals and two groups receiving SLIT with the D1ManPrup3 nanostructure (D1ManPrup3-SLIT): Tolerant (2nM D1ManPrup3) and Desensitized (5nM D1ManPrup3), against anaphylactic animals. DNA from lymph nodes-DCs were isolated and then, Whole Genome Bisulphite Sequencing was performed to analyze methylation. Results Most differentially methylated regions were found on the area of influence of gene promoters (DMPRs). Compared to the Anaphylactic group, the highest value was found in Desensitized mice (n = 7,713 DMPRs), followed by Tolerant (n = 4,091 DMPRs) and Sensitized (n = 3,931 DMPRs) mice. Moreover, many of these epigenetic changes were found in genes involved in immune and tolerance responses (Il1b, Il12b, Il1a, Ifng, and Tnf) as shown by functional enrichment (DCs regulation, B cell-mediated immunity, and effector mechanisms). Discussion In conclusion, different doses of D1ManPrup3-SLIT induce different DNA methylation changes, which are reflected in the induction of distinct responses, tolerance, or desensitization.
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Affiliation(s)
- Rafael Núñez
- Laboratory of Allergy, Allergy Research Group, Instituto de Investigación Biomédica de Málaga-Plataforma Andalusian Centre for Nanomedicine and Biotechnology (IBIMA-BIONAND), Málaga, Spain
| | - María J. Rodríguez
- Laboratory of Allergy, Allergy Research Group, Instituto de Investigación Biomédica de Málaga-Plataforma Andalusian Centre for Nanomedicine and Biotechnology (IBIMA-BIONAND), Málaga, Spain
| | - Clara Lebrón-Martín
- Laboratory of Allergy, Allergy Research Group, Instituto de Investigación Biomédica de Málaga-Plataforma Andalusian Centre for Nanomedicine and Biotechnology (IBIMA-BIONAND), Málaga, Spain
| | - María del Carmen Martín-Astorga
- Laboratory of Allergy, Allergy Research Group, Instituto de Investigación Biomédica de Málaga-Plataforma Andalusian Centre for Nanomedicine and Biotechnology (IBIMA-BIONAND), Málaga, Spain,Department of Medicine, Universidad de Málaga (UMA), Málaga, Spain
| | - Francisca Palomares
- Laboratory of Allergy, Allergy Research Group, Instituto de Investigación Biomédica de Málaga-Plataforma Andalusian Centre for Nanomedicine and Biotechnology (IBIMA-BIONAND), Málaga, Spain
| | - Javier Ramos-Soriano
- Laboratory of Glycosystems, Institute of Chemical Research (IIQ), Spanish National Research Council (CSIC)- Universidad de Sevilla, Sevilla, Spain
| | - Javier Rojo
- Laboratory of Glycosystems, Institute of Chemical Research (IIQ), Spanish National Research Council (CSIC)- Universidad de Sevilla, Sevilla, Spain
| | - María J. Torres
- Laboratory of Allergy, Allergy Research Group, Instituto de Investigación Biomédica de Málaga-Plataforma Andalusian Centre for Nanomedicine and Biotechnology (IBIMA-BIONAND), Málaga, Spain,Department of Medicine, Universidad de Málaga (UMA), Málaga, Spain,Clinical Unit of Allergy, Hospital Regional Universitario de Málaga, Málaga, Spain
| | - José Antonio Cañas
- Laboratory of Allergy, Allergy Research Group, Instituto de Investigación Biomédica de Málaga-Plataforma Andalusian Centre for Nanomedicine and Biotechnology (IBIMA-BIONAND), Málaga, Spain
| | - Cristobalina Mayorga
- Laboratory of Allergy, Allergy Research Group, Instituto de Investigación Biomédica de Málaga-Plataforma Andalusian Centre for Nanomedicine and Biotechnology (IBIMA-BIONAND), Málaga, Spain,Clinical Unit of Allergy, Hospital Regional Universitario de Málaga, Málaga, Spain,*Correspondence: Cristobalina Mayorga,
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Wang S, Chen Y, Ling Z, Li J, Hu J, He F, Chen Q. The role of dendritic cells in the immunomodulation to implanted biomaterials. Int J Oral Sci 2022; 14:52. [PMCID: PMC9636170 DOI: 10.1038/s41368-022-00203-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 09/26/2022] [Accepted: 09/29/2022] [Indexed: 11/06/2022] Open
Abstract
Considering the substantial role played by dendritic cells (DCs) in the immune system to bridge innate and adaptive immunity, studies on DC-mediated immunity toward biomaterials principally center on their adjuvant effects in facilitating the adaptive immunity of codelivered antigens. However, the effect of the intrinsic properties of biomaterials on dendritic cells has not been clarified. Recently, researchers have begun to investigate and found that biomaterials that are nonadjuvant could also regulate the immune function of DCs and thus affect subsequent tissue regeneration. In the case of proteins adsorbed onto biomaterial surfaces, their intrinsic properties can direct their orientation and conformation, forming “biomaterial-associated molecular patterns (BAMPs)”. Thus, in this review, we focused on the intrinsic physiochemical properties of biomaterials in the absence of antigens that affect DC immune function and summarized the underlying signaling pathways. Moreover, we preliminarily clarified the specific composition of BAMPs and the interplay between some key molecules and DCs, such as heat shock proteins (HSPs) and high mobility group box 1 (HMGB1). This review provides a new direction for future biomaterial design, through which modulation of host immune responses is applicable to tissue engineering and immunotherapy.
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Affiliation(s)
- Siyuan Wang
- grid.13402.340000 0004 1759 700XStomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006 China
| | - Yanqi Chen
- grid.13402.340000 0004 1759 700XStomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006 China
| | - Zhaoting Ling
- grid.13402.340000 0004 1759 700XStomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006 China
| | - Jia Li
- grid.13402.340000 0004 1759 700XStomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006 China
| | - Jun Hu
- grid.13402.340000 0004 1759 700XStomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006 China
| | - Fuming He
- grid.13402.340000 0004 1759 700XStomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006 China
| | - Qianming Chen
- grid.13402.340000 0004 1759 700XStomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, 310006 China
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18
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Wei T, Zhang T, Tang M. An overview of quantum dots-induced immunotoxicity and the underlying mechanisms. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 311:119865. [PMID: 35944776 DOI: 10.1016/j.envpol.2022.119865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 06/29/2022] [Accepted: 07/23/2022] [Indexed: 06/15/2023]
Abstract
Quantum dots (QDs) have bright luminescence and excellent photostability. New synthesis techniques and strategies also enhance QDs properties for specific applications. With the continuous expansion of the applications, QDs-mediated immunotoxicity has become a major concern. The immune system has been confirmed to be an important target organ of QDs and is sensitive to QDs. Herein, review immunotoxic effects caused by QDs and the underlying mechanisms. Firstly, QDs exposure-induced modulation in immune cell maturation and differentiation is summarized, especially pre-exposed dendritic cells (DCs) and their regulatory roles in adaptive immunity. Cytokines are usually recognized as biomarkers of immunotoxicity, therefore, variation of cytokines mediated by QDs is also highlighted. Moreover, the activation of the complement system induced by QDs is discussed. Accumulated results have suggested that QDs disrupt the immune response by regulating intracellular oxidative stress (reactive oxygen species) levels, autophagy formation, and expressions of pro-inflammatory mediators. Furthermore, several signalling pathways play a key role in the disruption. Finally, some difficulties worthy of further consideration are proposed. Because there are still challenges in biomedical and clinical applications, this review hopes to provide information that could be useful in exploring the mechanisms associated with QD-induced immunotoxicity.
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Affiliation(s)
- Tingting Wei
- Key Laboratory of Environmental Medicine Engineering, Department of Education, School of Public Health, Southeast University, Nanjing, China
| | - Ting Zhang
- Key Laboratory of Environmental Medicine Engineering, Department of Education, School of Public Health, Southeast University, Nanjing, China
| | - Meng Tang
- Key Laboratory of Environmental Medicine Engineering, Department of Education, School of Public Health, Southeast University, Nanjing, China.
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19
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Morris G, Gevezova M, Sarafian V, Maes M. Redox regulation of the immune response. Cell Mol Immunol 2022; 19:1079-1101. [PMID: 36056148 PMCID: PMC9508259 DOI: 10.1038/s41423-022-00902-0] [Citation(s) in RCA: 100] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 06/29/2022] [Indexed: 12/20/2022] Open
Abstract
AbstractThe immune-inflammatory response is associated with increased nitro-oxidative stress. The aim of this mechanistic review is to examine: (a) the role of redox-sensitive transcription factors and enzymes, ROS/RNS production, and the activity of cellular antioxidants in the activation and performance of macrophages, dendritic cells, neutrophils, T-cells, B-cells, and natural killer cells; (b) the involvement of high-density lipoprotein (HDL), apolipoprotein A1 (ApoA1), paraoxonase-1 (PON1), and oxidized phospholipids in regulating the immune response; and (c) the detrimental effects of hypernitrosylation and chronic nitro-oxidative stress on the immune response. The redox changes during immune-inflammatory responses are orchestrated by the actions of nuclear factor-κB, HIF1α, the mechanistic target of rapamycin, the phosphatidylinositol 3-kinase/protein kinase B signaling pathway, mitogen-activated protein kinases, 5' AMP-activated protein kinase, and peroxisome proliferator-activated receptor. The performance and survival of individual immune cells is under redox control and depends on intracellular and extracellular levels of ROS/RNS. They are heavily influenced by cellular antioxidants including the glutathione and thioredoxin systems, nuclear factor erythroid 2-related factor 2, and the HDL/ApoA1/PON1 complex. Chronic nitro-oxidative stress and hypernitrosylation inhibit the activity of those antioxidant systems, the tricarboxylic acid cycle, mitochondrial functions, and the metabolism of immune cells. In conclusion, redox-associated mechanisms modulate metabolic reprogramming of immune cells, macrophage and T helper cell polarization, phagocytosis, production of pro- versus anti-inflammatory cytokines, immune training and tolerance, chemotaxis, pathogen sensing, antiviral and antibacterial effects, Toll-like receptor activity, and endotoxin tolerance.
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20
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Zhang J, Li Z, Chandrasekar A, Li S, Ludolph A, Boeckers TM, Huber-Lang M, Roselli F, Olde Heuvel F. Fast Maturation of Splenic Dendritic Cells Upon TBI Is Associated With FLT3/FLT3L Signaling. Front Immunol 2022; 13:824459. [PMID: 35281004 PMCID: PMC8907149 DOI: 10.3389/fimmu.2022.824459] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 01/31/2022] [Indexed: 12/29/2022] Open
Abstract
The consequences of systemic inflammation are a significant burden after traumatic brain injury (TBI), with almost all organs affected. This response consists of inflammation and concurrent immunosuppression after injury. One of the main immune regulatory organs, the spleen, is highly interactive with the brain. Along this brain–spleen axis, both nerve fibers as well as brain-derived circulating mediators have been shown to interact directly with splenic immune cells. One of the most significant comorbidities in TBI is acute ethanol intoxication (EI), with almost 40% of patients showing a positive blood alcohol level (BAL) upon injury. EI by itself has been shown to reduce proinflammatory mediators dose-dependently and enhance anti-inflammatory mediators in the spleen. However, how the splenic immune modulatory effect reacts to EI in TBI remains unclear. Therefore, we investigated early splenic immune responses after TBI with and without EI, using gene expression screening of cytokines and chemokines and fluorescence staining of thin spleen sections to investigate cellular mechanisms in immune cells. We found a strong FLT3/FLT3L induction 3 h after TBI, which was enhanced by EI. The FLT3L induction resulted in phosphorylation of FLT3 in CD11c+ dendritic cells, which enhanced protein synthesis, maturation process, and the immunity of dendritic cells, shown by pS6, peIF2A, MHC-II, LAMP1, and CD68 by immunostaining and TNF-α expression by in-situ hybridization. In conclusion, these data indicate that TBI induces a fast maturation and immunity of dendritic cells which is associated with FLT3/FLT3L signaling and which is enhanced by EI prior to TBI.
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Affiliation(s)
- Jin Zhang
- Department of Neurology, Center for Biomedical Research (ZBMF), Ulm University, Ulm, Germany
| | - Zhenghui Li
- Department of Neurology, Center for Biomedical Research (ZBMF), Ulm University, Ulm, Germany.,Department of Neurosurgery, Kaifeng Central Hospital, Kaifeng, China
| | - Akila Chandrasekar
- Department of Neurology, Center for Biomedical Research (ZBMF), Ulm University, Ulm, Germany
| | - Shun Li
- Department of Neurology, Center for Biomedical Research (ZBMF), Ulm University, Ulm, Germany
| | - Albert Ludolph
- Department of Neurology, Center for Biomedical Research (ZBMF), Ulm University, Ulm, Germany.,German Center for Neurodegenerative Diseases (DZNE) , Ulm, Germany
| | - Tobias Maria Boeckers
- German Center for Neurodegenerative Diseases (DZNE) , Ulm, Germany.,Institute of Anatomy and Cell Biology, Ulm University, Ulm, Germany
| | - Markus Huber-Lang
- Institute of Clinical and Experimental Trauma-Immunology, University Hospital, Ulm, Germany
| | - Francesco Roselli
- Department of Neurology, Center for Biomedical Research (ZBMF), Ulm University, Ulm, Germany.,German Center for Neurodegenerative Diseases (DZNE) , Ulm, Germany.,Institute of Anatomy and Cell Biology, Ulm University, Ulm, Germany
| | - Florian Olde Heuvel
- Department of Neurology, Center for Biomedical Research (ZBMF), Ulm University, Ulm, Germany
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21
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Zhou N, Li S, Zhang F, Chen C, Li Y. Matrine Combined with Mammalian Target of Rapamycin Inhibitor Enhances Anti-Tumor Efficacy of dendritic cell Vaccines in hepatocellular carcinoma. Bioengineered 2022; 13:9274-9283. [PMID: 35400284 PMCID: PMC9161910 DOI: 10.1080/21655979.2022.2037855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Dendritic cells (DCs), as the most important antigen-presenting cells, play a crucial role in T cell activation. The latest research showed that inhibition of the mammalian target of rapamycin (mTOR) could enhance DCs maturation, promoting antigen presentation. Matrine has been identified as one of the key alkaloids isolated from the roots of Sophora flavescens. In present study, we combined matrine and mTOR inhibitor KU0063794 to observe the DCs functions, especially the antigen presentation ability. DCs were activated by phosphate-buffered saline (PBS), lipopolysaccharide (LPS), LPS+KU0063794, LPS+Matrine, and LPS+KU0063794+Matrine. The surface markers in DCs, proliferation of T cells and cytokines were detected by flow cytometry, cell counting kit-8 (CCK-8) and enzyme-linked immunosorbent assay (ELISA), respectively. The lactate dehydrogenase (LDH) release test was used to detect the antitumor efficacy. The tumor growth curves were plotted by calculating tumor volume. The apoptosis was detected by Terminal-deoxynucleoitidyl Transferase-Mediated Nick End Labeling (TUNEL) method. Matrine combined with KU0063794 could enhance the maturity of DCs, T cells proliferation and cytokines secretion (P < 0.05). The cytotoxic T lymphocytes (CTL) killing efficacy of LPS+KU0063794+Matrine group was higher than other groups (P < 0.05). In vivo, the tumor weights and volumes in LPS+KU0063794+Matrine group were lower than other groups. The detections of tumor apoptosis were increased in LPS+KU0063794+Matrine group (P < 0.05). DC vaccine with mTOR inhibitor and matrine could significantly improve the efficacy of antitumor immunity in vitro and vivo. These findings illustrated that mTOR inhibitor and matrine, as two immunomodulators, could enhance DC activation and differentiation.
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Affiliation(s)
- Ning Zhou
- Department of Gastroenterology, The First People’s Hospital of Lanzhou City, Lanzhou Gansu, China
- Key Laboratory of Digestive System Tumors of Gansu Province, Lanzhou Gansu, China
| | - Sheng Li
- Department of Gastroenterology, The First People’s Hospital of Lanzhou City, Lanzhou Gansu, China
| | - Fan Zhang
- Key Laboratory of Digestive System Tumors of Gansu Province, Lanzhou Gansu, China
| | - Cong Chen
- Key Laboratory of Digestive System Tumors of Gansu Province, Lanzhou Gansu, China
| | - Yumin Li
- Key Laboratory of Digestive System Tumors of Gansu Province, Lanzhou Gansu, China
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22
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Li H, Yang YG, Sun T. Nanoparticle-Based Drug Delivery Systems for Induction of Tolerance and Treatment of Autoimmune Diseases. Front Bioeng Biotechnol 2022; 10:889291. [PMID: 35464732 PMCID: PMC9019755 DOI: 10.3389/fbioe.2022.889291] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 03/10/2022] [Indexed: 11/13/2022] Open
Abstract
Autoimmune disease is a chronic inflammatory disease caused by disorders of immune regulation. Antigen-specific immunotherapy has the potential to inhibit the autoreactivity of inflammatory T cells and induce antigen-specific immune suppression without impairing normal immune function, offering an ideal strategy for autoimmune disease treatment. Tolerogenic dendritic cells (Tol DCs) with immunoregulatory functions play important roles in inducing immune tolerance. However, the effective generation of tolerogenic DCs in vivo remains a great challenge. The application of nanoparticle-based drug delivery systems in autoimmune disease treatment can increase the efficiency of inducing antigen-specific tolerance in vivo. In this review, we discuss multiple nanoparticles, with a focus on their potential in treatment of autoimmune diseases. We also discuss how the physical properties of nanoparticles influence their therapeutic efficacy.
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Affiliation(s)
- He Li
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, China
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, China
- Department of Rehabilitation Medicine, The First Hospital, Jilin University, Changchun, China
| | - Yong-Guang Yang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, China
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, China
- International Center of Future Science, Jilin University, Changchun, China
| | - Tianmeng Sun
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education, Institute of Immunology, The First Hospital, Jilin University, Changchun, China
- National-local Joint Engineering Laboratory of Animal Models for Human Diseases, Changchun, China
- International Center of Future Science, Jilin University, Changchun, China
- *Correspondence: Tianmeng Sun,
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23
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Chang T, Yang J, Deng H, Chen D, Yang X, Tang ZH. Depletion and Dysfunction of Dendritic Cells: Understanding SARS-CoV-2 Infection. Front Immunol 2022; 13:843342. [PMID: 35265087 PMCID: PMC8898834 DOI: 10.3389/fimmu.2022.843342] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Accepted: 01/31/2022] [Indexed: 12/15/2022] Open
Abstract
Uncontrolled severe acute respiratory syndrome-coronavirus (SARS-CoV)-2 infection is closely related to disorders of the innate immune and delayed adaptive immune systems. Dendritic cells (DCs) “bridge” innate immunity and adaptive immunity. DCs have important roles in defending against SARS-CoV-2 infection. In this review, we summarize the latest research concerning the role of DCs in SARS-CoV-2 infection. We focus on the complex interplay between DCs and SARS-CoV-2: pyroptosis-induced activation; activation of the renin–angiotensin–aldosterone system; and activation of dendritic cell-specific intercellular adhesion molecule 3-grabbing non-integrin. We also discuss the decline in DC number, the impaired antigen-presentation capability, and the reduced production of type-I interferon of DCs in severe SARS-CoV-2 infection. In addition, we discuss the potential mechanisms for pathological activation of DCs to understand the pattern of SARS-CoV-2 infection. Lastly, we provide a brief overview of novel vaccination and immunotherapy strategies based on DC targeting to overcome SARS-CoV-2 infection.
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Affiliation(s)
- Teding Chang
- Division of Trauma & Surgical Critical Care, Department of Surgery, Tongji Hospital, Tongji, China
| | - Jingzhi Yang
- Division of Trauma & Surgical Critical Care, Department of Surgery, Tongji Hospital, Tongji, China
| | - Hai Deng
- Division of Trauma & Surgical Critical Care, Department of Surgery, Tongji Hospital, Tongji, China
| | - Deng Chen
- Division of Trauma & Surgical Critical Care, Department of Surgery, Tongji Hospital, Tongji, China
| | - XiangPing Yang
- Department of Immunology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhao-Hui Tang
- Division of Trauma & Surgical Critical Care, Department of Surgery, Tongji Hospital, Tongji, China
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24
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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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25
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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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26
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Nuñez R, Rodriguez MJ, Palomares F, Gomez F, Jabato FM, Cordoba-Caballero J, Seoane P, Losada J, Rojo J, Torres MJ, Perkins JR, Mayorga C. Transcriptional changes in dendritic cells underlying allergen specific induced tolerance in a mouse model. Sci Rep 2022; 12:2797. [PMID: 35181694 PMCID: PMC8857182 DOI: 10.1038/s41598-022-06186-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 01/14/2022] [Indexed: 12/13/2022] Open
Abstract
To investigate food allergy-tolerance mechanisms induced through allergen-specific immunotherapy we used RNA-Sequencing to measure gene expression in lymph-node-derived dendritic cells from Pru p 3-anaphylactic mice after immunotherapy with glycodendropeptides at 2 nM and 5 nM, leading to permanent tolerance and short-term desensitization, respectively. Gene expression was also measured in mice receiving no immunotherapy (anaphylaxis); and in which anaphylaxis could never occur (antigen-only). Compared to anaphylaxis, the antigen-only group showed the greatest number of expression-changes (411), followed by tolerant (186) and desensitized (119). Only 29 genes changed in all groups, including Il12b, Cebpb and Ifngr1. The desensitized group showed enrichment for genes related to chronic inflammatory response, secretory granule, and regulation of interleukin-12 production; the tolerant group showed genes related to cytokine receptor activity and glucocorticoid receptor binding, suggesting distinct pathways for similar outcomes. We identified genes and processes potentially involved in the restoration of long-term tolerance via allergen-specific immunotherapy, representing potential prognostic biomarkers.
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Affiliation(s)
- Rafael Nuñez
- Allergy Research Group, Research Laboratory, Allergy Unit, Hospital Regional Universitario de Málaga-IBIMA, Instituto de Investigación Biomédica de Málaga-IBIMA, 29009, Málaga, Spain
| | - Maria Jose Rodriguez
- Allergy Research Group, Research Laboratory, Allergy Unit, Hospital Regional Universitario de Málaga-IBIMA, Instituto de Investigación Biomédica de Málaga-IBIMA, 29009, Málaga, Spain
| | - Francisca Palomares
- Allergy Research Group, Research Laboratory, Allergy Unit, Hospital Regional Universitario de Málaga-IBIMA, Instituto de Investigación Biomédica de Málaga-IBIMA, 29009, Málaga, Spain
| | - Francisca Gomez
- Allergy Clinical Unit, Hospital Regional Universitario de Málaga, Málaga, Spain
| | - Fernando M Jabato
- Department of Molecular Biology and Biochemistry, University of Malaga, Malaga, Spain
| | | | - Pedro Seoane
- Department of Molecular Biology and Biochemistry, University of Malaga, Malaga, Spain
- CIBER de Enfermedades Raras, Instituto de Salud Carlos III, Madrid, Spain
| | - Jorge Losada
- Laboratory of Carbohydrates, Instituto de Investigaciones Químicas (IIQ), CSIC-Universidad de Sevilla, Sevilla, Spain
| | - Javier Rojo
- Laboratory of Carbohydrates, Instituto de Investigaciones Químicas (IIQ), CSIC-Universidad de Sevilla, Sevilla, Spain
| | - Maria Jose Torres
- Allergy Research Group, Research Laboratory, Allergy Unit, Hospital Regional Universitario de Málaga-IBIMA, Instituto de Investigación Biomédica de Málaga-IBIMA, 29009, Málaga, Spain
- Allergy Clinical Unit, Hospital Regional Universitario de Málaga, Málaga, Spain
- Nanostructures for Diagnosing and Treatment of Allergic Diseases Laboratory, Centro Andaluz de Nanomedicina y Biotecnología-BIONAND, Málaga, Spain
- Medicine Department, Universidad de Málaga-UMA, Málaga, Spain
| | - James Richard Perkins
- Allergy Research Group, Research Laboratory, Allergy Unit, Hospital Regional Universitario de Málaga-IBIMA, Instituto de Investigación Biomédica de Málaga-IBIMA, 29009, Málaga, Spain
- Department of Molecular Biology and Biochemistry, University of Malaga, Malaga, Spain
- CIBER de Enfermedades Raras, Instituto de Salud Carlos III, Madrid, Spain
| | - Cristobalina Mayorga
- Allergy Research Group, Research Laboratory, Allergy Unit, Hospital Regional Universitario de Málaga-IBIMA, Instituto de Investigación Biomédica de Málaga-IBIMA, 29009, Málaga, Spain.
- Allergy Clinical Unit, Hospital Regional Universitario de Málaga, Málaga, Spain.
- Nanostructures for Diagnosing and Treatment of Allergic Diseases Laboratory, Centro Andaluz de Nanomedicina y Biotecnología-BIONAND, Málaga, Spain.
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27
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Yamamoto K, Ioroi T, Shinomiya K, Yoshida A, Harada K, Fujisawa M, Omura T, Ikemi Y, Nakagawa S, Yonezawa A, Ogawa O, Matsubara K, Iwamoto T, Nishikawa K, Hayashi S, Tohara D, Murakami Y, Motoshima T, Jono H, Yano I. STAT3 polymorphism associates with mTOR inhibitor-induced interstitial lung disease in patients with renal cell carcinoma. Oncol Res 2022; 29:11-23. [PMID: 35016744 PMCID: PMC9110706 DOI: 10.3727/096504022x16418911579334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
We evaluated the association of signal transducer and activator of transcription 3 (STAT3) polymorphisms with the incidence of mammalian target of rapamycin (mTOR) inhibitor-induced interstitial lung disease (ILD) in patients with renal cell carcinoma (RCC). We also used lung-derived cell lines to investigate the mechanisms of this association. Japanese patients with metastatic RCC who were treated with mTOR inhibitors were genotyped for the STAT3 polymorphism, rs4796793 (−1697C/G). We evaluated the association of the STAT3 genotype with the incidence of ILD and therapeutic outcome. In the 57 patients included in the primary analysis, the ILD rate within 140 days was significantly higher in patients with the GG genotype compared with those with other genotypes (77.8% vs. 23.1%, odds ratio = 11.67, 95% confidential interval = 3.06–44.46). There were no significant differences in progression-free survival or time-to-treatment failure between the patients with the GG genotype and those with other genotypes. An in vitro study demonstrated that some lung-derived cell lines carrying the GG genotype exhibited an increase in the expression of mesenchymal markers, such as fibronectin, N-cadherin, and vimentin, and decreases in E-cadherin, which is an epithelial marker associated with exposure to everolimus, although STAT3 expression and activity were not related to the genotype. In conclusion, the GG genotype of the STAT3 rs4796793 polymorphism increases the risk of mTOR inhibitor-induced ILD, supporting its use as a predictive marker for RCC.
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28
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Cho DH, Lee GY, An JH, Han SN. The Effects of 1,25(OH)2D3 treatment on Immune Responses and Intracellular Metabolic Pathways of Bone Marrow-Derived Dendritic Cells from Lean and Obese Mice. IUBMB Life 2021; 74:378-390. [PMID: 34962347 DOI: 10.1002/iub.2592] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 12/15/2021] [Indexed: 11/11/2022]
Abstract
Vitamin D affects differentiation, maturation, and activation of dendritic cells (DCs). Obesity-related immune dysfunction is associated with metabolic changes in immune cells. Objectives of the study are to investigate the effects of vitamin D and obesity on immune responses and markers related to immunometabolism of bone marrow-derived dendritic cells (BMDCs). Bone marrow cells (BMCs) were isolated from lean and obese mice, and BMDCs were generated by culturing BMCs with rmGM-CSF. BMDCs were treated with 1 or 10 nM of 1,25-dihydroxyvitamin D3 (1,25(OH)2D3), and maturation was induced by LPS (50 ng/mL) stimulation for 24 h. Cell phenotypes, cytokine productions, and expression of proteins and genes involved in Akt/mTOR signaling pathway and glycolytic pathway were determined. 1,25(OH)2D3 treatment inhibited differentiation of BMDCs (CD11c+ %), expression of phenotypes related with DC function (MHC class II and CD86) and production of IL-12p70 in both lean and obese mice. The expression of PD-L1 and the ratio of IL-10/IL-12p70 were increased by 1,25(OH)2D3. With 1,25(OH)2D3 treatment, Akt/mTOR signaling pathway was suppressed, and expression of genes related to glycolysis (Glut1, Pfkfb4, Hif1A) was increased. The upregulation of glycolysis-related genes observed with 1,25(OH)2D3 treatment seems to be associated with the induction of tolerogenic features of BMDCs from lean and obese mice, and Hif1A seems to have a potential role in conveying the effect of 1,25(OH)2D3 on glycolysis. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Da Hye Cho
- Department of Food and Nutrition, College of Human Ecology, Seoul National University, Seoul, Korea
| | - Ga Young Lee
- Department of Food and Nutrition, College of Human Ecology, Seoul National University, Seoul, Korea
| | - Jeong Hee An
- Department of Food and Nutrition, College of Human Ecology, Seoul National University, Seoul, Korea
| | - Sung Nim Han
- Department of Food and Nutrition, College of Human Ecology, Seoul National University, Seoul, Korea.,Research Institute of Human Ecology, Seoul National University, Seoul, Korea
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29
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Tang WQ, Liu Y, Ji CH, Gu JH, Chen YM, Huang J, Guan W, Xu DW, Jiang B. Virus-mediated decrease of LKB1 activity in the mPFC diminishes stress-induced depressive-like behaviors in mice. Biochem Pharmacol 2021; 197:114885. [PMID: 34968488 DOI: 10.1016/j.bcp.2021.114885] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 11/30/2021] [Accepted: 12/06/2021] [Indexed: 01/01/2023]
Abstract
As a highly prevalent neuropsychiatric disorder worldwide, the pathophysiology of depression is not yet fully understood and based on multiple factors among which chronic stress is critical. Numerous previous studies have shown the role of central mammalian target of rapamycin complex 1 (mTORC1) signaling in depression. However, so far it remains elusive by which way chronic stress down-regulates the activity of central mTORC1. Liver kinase b1 (LKB1) has been demonstrated to regulate the activity of the mTORC1 signaling cascade by phosphorylating AMP activated protein kinase (AMPK). Here, this study aimed to explore whether LKB1 participates in depression by regulating the downstream AMPK-mTORC1 signaling, and various methods including mouse models of depression, western blotting and immunofluorescence were used together. Our results showed that chronic stress significantly enhanced the expression of both phosphorylated LKB1 and total LKB1 in the medial prefrontal cortex (mPFC) but not the hippocampus. Furthermore, genetic knockdown of LKB1 in the mPFC fully reversed not only the depressive-like behaviors induced by chronic stress in mice but also the effects of chronic stress on the activity of AMPK and the mTORC1 system. Taken together, this study preliminarily suggests that LKB1 in the mPFC could be a feasible target for antidepressants. This study also provides support for the potential use of LKB1 inhibition strategies against the chronic stress-related neuropsychiatric disorders.
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Affiliation(s)
- Wen-Qian Tang
- Department of Pharmacology, School of Pharmacy, Nantong University, Nantong 226001, Jiangsu, China
| | - Yue Liu
- Department of Pharmacology, School of Pharmacy, Nantong University, Nantong 226001, Jiangsu, China
| | - Chun-Hui Ji
- Department of Pharmacology, School of Pharmacy, Nantong University, Nantong 226001, Jiangsu, China
| | - Jiang-Hong Gu
- Department of Pharmacology, School of Pharmacy, Nantong University, Nantong 226001, Jiangsu, China
| | - Yan-Mei Chen
- Department of Pharmacology, School of Pharmacy, Nantong University, Nantong 226001, Jiangsu, China
| | - Jie Huang
- Department of Pharmacology, School of Pharmacy, Nantong University, Nantong 226001, Jiangsu, China
| | - Wei Guan
- Department of Pharmacology, School of Pharmacy, Nantong University, Nantong 226001, Jiangsu, China
| | - Da-Wei Xu
- Department of Orthopaedics, Affiliated Hospital 2 of Nantong University, Nantong 226001, Jiangsu, China.
| | - Bo Jiang
- Department of Pharmacology, School of Pharmacy, Nantong University, Nantong 226001, Jiangsu, China.
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30
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Fu J, Lehmann CHK, Wang X, Wahlbuhl M, Allabauer I, Wilde B, Amon L, Dolff S, Cesnjevar R, Kribben A, Woelfle J, Rascher W, Hoyer PF, Dudziak D, Witzke O, Hoerning A. CXCR4 blockade reduces the severity of murine heart allograft rejection by plasmacytoid dendritic cell-mediated immune regulation. Sci Rep 2021; 11:23815. [PMID: 34893663 PMCID: PMC8664946 DOI: 10.1038/s41598-021-03115-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 11/08/2021] [Indexed: 12/20/2022] Open
Abstract
Allograft-specific regulatory T cells (Treg cells) are crucial for long-term graft acceptance after transplantation. Although adoptive Treg cell transfer has been proposed, major challenges include graft-specificity and stability. Thus, there is an unmet need for the direct induction of graft-specific Treg cells. We hypothesized a synergism of the immunotolerogenic effects of rapamycin (mTOR inhibition) and plerixafor (CXCR4 antagonist) for Treg cell induction. Thus, we performed fully-mismatched heart transplantations and found combination treatment to result in prolonged allograft survival. Moreover, fibrosis and myocyte lesions were reduced. Although less CD3+ T cell infiltrated, higher Treg cell numbers were observed. Noteworthy, this was accompanied by a plerixafor-dependent plasmacytoid dendritic cells-(pDCs)-mobilization. Furthermore, in vivo pDC-depletion abrogated the plerixafor-mediated Treg cell number increase and reduced allograft survival. Our pharmacological approach allowed to increase Treg cell numbers due to pDC-mediated immune regulation. Therefore pDCs can be an attractive immunotherapeutic target in addition to plerixafor treatment.
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Affiliation(s)
- Jian Fu
- Department of Nephrology, University Hospital Essen, University Duisburg-Essen, Essen, Germany.,Department for Pediatric and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, Loschgestrasse 15, 91054, Erlangen, Germany.,The Emergency and Trauma Center, The First Affiliated Hospital of Hai Nan Medical University, Haikou, China
| | - Christian H K Lehmann
- Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg, Research Module II, Hartmannstr. 14, 91052, Erlangen, Germany. .,Medical Immunology Campus and German Centre for Immuntherapy (Deutsches Zentrum für Immuntherapie-DZI) Erlangen, FAU Erlangen-Nürnberg, 91054, Erlangen, Germany.
| | - Xinning Wang
- Department of Nephrology, University Hospital Essen, University Duisburg-Essen, Essen, Germany.,The Children's Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Mandy Wahlbuhl
- Department for Pediatric and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, Loschgestrasse 15, 91054, Erlangen, Germany
| | - Ida Allabauer
- Department for Pediatric and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, Loschgestrasse 15, 91054, Erlangen, Germany
| | - Benjamin Wilde
- Department of Nephrology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Lukas Amon
- Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg, Research Module II, Hartmannstr. 14, 91052, Erlangen, Germany
| | - Sebastian Dolff
- Department of Infectious Diseases, West German Centre of Infectious Diseases, Universitätsmedizin Essen, University Duisburg-Essen, Essen, Germany
| | - Robert Cesnjevar
- Department of Pediatric Cardiac Surgery, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), University Hospital Erlangen, Erlangen, Germany.,Department of Cardiac Surgery, Universitäts-Kinderspital Zürich, Zurich, Switzerland
| | - Andreas Kribben
- Department of Nephrology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Joachim Woelfle
- Department for Pediatric and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, Loschgestrasse 15, 91054, Erlangen, Germany
| | - Wolfgang Rascher
- Department for Pediatric and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, Loschgestrasse 15, 91054, Erlangen, Germany
| | - Peter F Hoyer
- Department of Pediatrics II, Pediatric Nephrology, Gastroenterology, Endocrinology and Transplant Medicine, Children's Hospital Essen, University Duisburg-Essen, Duisburg, Germany
| | - Diana Dudziak
- Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg, Research Module II, Hartmannstr. 14, 91052, Erlangen, Germany.,Medical Immunology Campus and German Centre for Immuntherapy (Deutsches Zentrum für Immuntherapie-DZI) Erlangen, FAU Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Oliver Witzke
- Department of Infectious Diseases, West German Centre of Infectious Diseases, Universitätsmedizin Essen, University Duisburg-Essen, Essen, Germany
| | - André Hoerning
- Department for Pediatric and Adolescent Medicine, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, Loschgestrasse 15, 91054, Erlangen, Germany. .,Department of Pediatrics II, Pediatric Nephrology, Gastroenterology, Endocrinology and Transplant Medicine, Children's Hospital Essen, University Duisburg-Essen, Duisburg, Germany.
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Weiss M, Anderluh M, Gobec M. Inhibition of O-GlcNAc Transferase Alters the Differentiation and Maturation Process of Human Monocyte Derived Dendritic Cells. Cells 2021; 10:cells10123312. [PMID: 34943826 PMCID: PMC8699345 DOI: 10.3390/cells10123312] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 11/23/2021] [Accepted: 11/23/2021] [Indexed: 11/16/2022] Open
Abstract
The O-GlcNAcylation is a posttranslational modification of proteins regulated by O-GlcNAc transferase (OGT) and O-GlcNAcase. These enzymes regulate the development, proliferation and function of cells, including the immune cells. Herein, we focused on the role of O-GlcNAcylation in human monocyte derived dendritic cells (moDCs). Our study suggests that inhibition of OGT modulates AKT and MEK/ERK pathways in moDCs. Changes were also observed in the expression levels of relevant surface markers, where reduced expression of CD80 and DC-SIGN, and increased expression of CD14, CD86 and HLA-DR occurred. We also noticed decreased IL-10 and increased IL-6 production, along with diminished endocytotic capacity of the cells, indicating that inhibition of O-GlcNAcylation hampers the transition of monocytes into immature DCs. Furthermore, the inhibition of OGT altered the maturation process of immature moDCs, since a CD14medDC-SIGNlowHLA-DRmedCD80lowCD86high profile was noticed when OGT inhibitor, OSMI-1, was present. To evaluate DCs ability to influence T cell differentiation and polarization, we co-cultured these cells. Surprisingly, the observed phenotypic changes of mature moDCs generated in the presence of OSMI-1 led to an increased proliferation of allogeneic T cells, while their polarization was not affected. Taken together, we confirm that shifting the O-GlcNAcylation status due to OGT inhibition alters the differentiation and function of moDCs in in vitro conditions.
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Affiliation(s)
- Matjaž Weiss
- The Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Ljubljana, 1000 Ljubljana, Slovenia; (M.W.); (M.A.)
| | - Marko Anderluh
- The Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Ljubljana, 1000 Ljubljana, Slovenia; (M.W.); (M.A.)
| | - Martina Gobec
- The Department of Clinical Biochemistry, Faculty of Pharmacy, University of Ljubljana, 1000 Ljubljana, Slovenia
- Correspondence: ; Tel.: +386-1-4769-636
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32
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Targeting lysosomes in human disease: from basic research to clinical applications. Signal Transduct Target Ther 2021; 6:379. [PMID: 34744168 PMCID: PMC8572923 DOI: 10.1038/s41392-021-00778-y] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 09/26/2021] [Indexed: 01/18/2023] Open
Abstract
In recent years, accumulating evidence has elucidated the role of lysosomes in dynamically regulating cellular and organismal homeostasis. Lysosomal changes and dysfunction have been correlated with the development of numerous diseases. In this review, we interpreted the key biological functions of lysosomes in four areas: cellular metabolism, cell proliferation and differentiation, immunity, and cell death. More importantly, we actively sought to determine the characteristic changes and dysfunction of lysosomes in cells affected by these diseases, the causes of these changes and dysfunction, and their significance to the development and treatment of human disease. Furthermore, we outlined currently available targeting strategies: (1) targeting lysosomal acidification; (2) targeting lysosomal cathepsins; (3) targeting lysosomal membrane permeability and integrity; (4) targeting lysosomal calcium signaling; (5) targeting mTOR signaling; and (6) emerging potential targeting strategies. Moreover, we systematically summarized the corresponding drugs and their application in clinical trials. By integrating basic research with clinical findings, we discussed the current opportunities and challenges of targeting lysosomes in human disease.
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33
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Goretzki A, Lin Y, Schülke S. Immune metabolism in allergies, does it matter?-A review of immune metabolic basics and adaptations associated with the activation of innate immune cells in allergy. Allergy 2021; 76:3314-3331. [PMID: 33811351 DOI: 10.1111/all.14843] [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: 11/03/2020] [Revised: 03/11/2021] [Accepted: 03/28/2021] [Indexed: 12/11/2022]
Abstract
Type I allergies are pathological, type 2 inflammatory immune responses against otherwise harmless environmental allergens that arise from complex interactions between different types of immune cells. Activated immune cells undergo extensive changes in phenotype and function to fulfill their effector functions. Hereby, activation, differentiation, proliferation, migration, and mounting of effector responses require metabolic reprogramming. While the metabolic changes associated with activation of dendritic cells, macrophages, and T cells are extensively studied, data about the metabolic phenotypes of the other cell types critically involved in allergic responses (epithelial cells, eosinophils, basophils, mast cells, and ILC2s) are rather limited. This review briefly covers the basics of cellular energy metabolism and its connection to immune cell function. In addition, it summarizes the current state of knowledge in terms of dendritic cell and macrophage metabolism and subsequently focuses on the metabolic changes associated with activation of epithelial cells, eosinophils, basophils, mast cells, as well as ILC2s in allergy. Interestingly, the innate key cell types in allergic inflammation were reported to change their metabolic phenotype during activation, shifting to either glycolysis (epithelial cells, M1 macrophages, DCs, eosinophils, basophils, acutely activated mast cells), oxidative phosphorylation (M2 macrophages, longer term activated mast cells), or fatty acid oxidation (ILC2s). Therefore, immune metabolism is of relevance in allergic diseases and its connection to immune cell effector function needs to be considered to better understand induction and maintenance of allergic responses. Further progress in this field will likely improve both our understanding of disease pathology and enable new treatment targets/strategies.
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Affiliation(s)
| | - Yen‐Ju Lin
- Molecular Allergology Paul‐Ehrlich‐Institut Langen Germany
| | - Stefan Schülke
- Molecular Allergology Paul‐Ehrlich‐Institut Langen Germany
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34
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Xu S, Li S, Liu X, Tan K, Zhang J, Li K, Bai X, Zhang Y. Rictor Is a Novel Regulator of TRAF6/TRAF3 in Osteoclasts. J Bone Miner Res 2021; 36:2053-2064. [PMID: 34155681 DOI: 10.1002/jbmr.4398] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 06/09/2021] [Accepted: 06/16/2021] [Indexed: 12/27/2022]
Abstract
Tumor necrosis factor receptor-associated factors (TRAFs) are crucial for receptor activator of nuclear factor-κB (RANK) activation in osteoclasts. However, the upstream mechanisms of TRAF members in the osteoclastic lineage remain largely unknown. Here, we demonstrated that Rictor, a key component of mechanistic target of rapamycin complex 2 (mTORC2), was crucial for TRAF6/TRAF3 expression in osteoclasts. Our ex vivo and in vivo studies showed that Rictor ablation from the osteoclastic lineage reduced osteoclast numbers and increased bone mass in mice. Mechanistically, we found that Rictor ablation restricted osteoclast formation, which disrupted TRAF6 stability and caused autophagy block in a manner distinct from mTORC1, resulting in reduced TRAF3 degradation. Boosting TRAF6 expression or knockdown of TRAF3 levels in Rictor-deficient cells could both overcome the defect. Moreover, Rictor could interact with TRAF6 upon RANK ligand (RANKL) stimulation and loss of Rictor impaired TRAF6 stability and promoted its ubiquitinated degradation. These findings established an innovative link between Rictor, TRAF protein levels, and autophagic block. More importantly, mTOR complexes in the osteoclastic lineage are likely switches for coordinating TRAF6 and TRAF3 protein levels, and Rictor may function as an essential upstream regulator of TRAF6/TRAF3 that is partially independent of mTORC1 activity. Inhibitors targeting Rictor may therefore be valuable for preventing or treating osteoclast-related diseases. © 2021 American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Song Xu
- Department of Cell Biology, School of Basic Medical Science, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Southern Medical University, Guangzhou, China.,Department of Arthroplasty, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Shihai Li
- Department of Cell Biology, School of Basic Medical Science, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Southern Medical University, Guangzhou, China
| | - Xianming Liu
- Department of Cell Biology, School of Basic Medical Science, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Southern Medical University, Guangzhou, China
| | - Kang Tan
- Department of Cell Biology, School of Basic Medical Science, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Southern Medical University, Guangzhou, China
| | - Jiahuan Zhang
- Department of Cell Biology, School of Basic Medical Science, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Southern Medical University, Guangzhou, China
| | - Kai Li
- Academy of Orthopedics, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Xiaochun Bai
- Department of Cell Biology, School of Basic Medical Science, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Southern Medical University, Guangzhou, China
| | - Yue Zhang
- Department of Cell Biology, School of Basic Medical Science, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, Southern Medical University, Guangzhou, China
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35
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Modulation of the mTOR pathway plays a central role in dendritic cell functions after Echinococcus granulosus antigen recognition. Sci Rep 2021; 11:17238. [PMID: 34446757 PMCID: PMC8390662 DOI: 10.1038/s41598-021-96435-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 07/09/2021] [Indexed: 12/12/2022] Open
Abstract
Immune evasion is a hallmark of persistent echinococcal infection, comprising modulation of innate immune cells and antigen-specific T cell responses. However, recognition of Echinococcus granulosus by dendritic cells (DCs) is a key determinant of the host's response to this parasite. Given that mTOR signaling pathway has been described as a regulator linking metabolism and immune function in DCs, we reported for the first time in these cells, global translation levels, antigen uptake, phenotype, cytokine transcriptional levels, and splenocyte priming activity upon recognition of the hydatid fluid (HF) and the highly glycosylated laminar layer (LL). We found that LL induced a slight up-regulation of CD86 and MHC II in DCs and also stimulated the production of IL-6 and TNF-α. By contrast, HF did not increase the expression of any co-stimulatory molecules, but also down-modulated CD40 and stimulated the expression of the anti-inflammatory cytokine IL-10. Both parasitic antigens promoted protein synthesis through mTOR activation. The use of rapamycin decreased the expression of the cytokines tested, empowered the down-modulation of CD40 and also reduced splenocyte proliferation. Finally, we showed that E. granulosus antigens increase the amounts of LC3-positive structures in DCs which play critical roles in the presentation of these antigens to T cells.
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36
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Piffer AC, Santos FMD, Thomé MP, Diehl C, Garcia AWA, Kinskovski UP, Schneider RDO, Gerber A, Feltes BC, Schrank A, Vasconcelos ATR, Lenz G, Kmetzsch L, Vainstein MH, Staats CC. Transcriptomic analysis reveals that mTOR pathway can be modulated in macrophage cells by the presence of cryptococcal cells. Genet Mol Biol 2021; 44:e20200390. [PMID: 34352067 PMCID: PMC8341293 DOI: 10.1590/1678-4685-gmb-2020-0390] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 05/05/2021] [Indexed: 11/21/2022] Open
Abstract
Cryptococcus neoformans and Cryptococcus gattii are the etiological agents of cryptococcosis, a high mortality disease. The development of such disease depends on the interaction of fungal cells with macrophages, in which they can reside and replicate. In order to dissect the molecular mechanisms by which cryptococcal cells modulate the activity of macrophages, a genome-scale comparative analysis of transcriptional changes in macrophages exposed to Cryptococcus spp. was conducted. Altered expression of nearly 40 genes was detected in macrophages exposed to cryptococcal cells. The major processes were associated with the mTOR pathway, whose associated genes exhibited decreased expression in macrophages incubated with cryptococcal cells. Phosphorylation of p70S6K and GSK-3β was also decreased in macrophages incubated with fungal cells. In this way, Cryptococci presence could drive the modulation of mTOR pathway in macrophages possibly to increase the survival of the pathogen.
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Affiliation(s)
- Alícia C Piffer
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Porto Alegre, RS, Brazil
| | - Francine M Dos Santos
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Porto Alegre, RS, Brazil
| | - Marcos P Thomé
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Porto Alegre, RS, Brazil
| | - Camila Diehl
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Porto Alegre, RS, Brazil
| | - Ane Wichine Acosta Garcia
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Porto Alegre, RS, Brazil
| | - Uriel Perin Kinskovski
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Porto Alegre, RS, Brazil
| | - Rafael de Oliveira Schneider
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Porto Alegre, RS, Brazil
| | - Alexandra Gerber
- Laboratório Nacional de Computação Científica, Petrópolis, RJ, Brazil
| | - Bruno César Feltes
- Universidade Federal do Rio Grande do Sul, Instituto de Informática, Porto Alegre, RS, Brazil
| | - Augusto Schrank
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Porto Alegre, RS, Brazil
| | | | - Guido Lenz
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Porto Alegre, RS, Brazil
| | - Lívia Kmetzsch
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Porto Alegre, RS, Brazil
| | - Marilene H Vainstein
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Porto Alegre, RS, Brazil
| | - Charley C Staats
- Universidade Federal do Rio Grande do Sul, Programa de Pós-Graduação em Biologia Celular e Molecular, Centro de Biotecnologia, Porto Alegre, RS, Brazil
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37
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Hypoxia Enhances the Expression of RNASET2 in Human Monocyte-Derived Dendritic Cells: Role of PI3K/AKT Pathway. Int J Mol Sci 2021; 22:ijms22147564. [PMID: 34299186 PMCID: PMC8303897 DOI: 10.3390/ijms22147564] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/08/2021] [Accepted: 07/11/2021] [Indexed: 01/13/2023] Open
Abstract
Hypoxia is a key component of the tumor microenvironment (TME) and promotes not only tumor growth and metastasis, but also negatively affects infiltrating immune cells by impairing host immunity. Dendritic cells (DCs) are the most potent antigen-presenting cells and their biology is weakened in the TME in many ways, including the modulation of their viability. RNASET2 belongs to the T2 family of extracellular ribonucleases and, besides its nuclease activity, it exerts many additional functions. Indeed, RNASET2 is involved in several human pathologies, including cancer, and it is functionally relevant in the TME. RNASET2 functions are not restricted to cancer cells and its expression could be relevant also in other cell types which are important players in the TME, including DCs. Therefore, this study aimed to unravel the effect of hypoxia (2% O2) on the expression of RNASET2 in DCs. Here, we showed that hypoxia enhanced the expression and secretion of RNASET2 in human monocyte-derived DCs. This paralleled the HIF-1α accumulation and HIF-dependent and -independent signaling, which are associated with DCs’ survival/autophagy/apoptosis. RNASET2 expression, under hypoxia, was regulated by the PI3K/AKT pathway and was almost completely abolished by TLR4 ligand, LPS. Taken together, these results highlight how hypoxia- dependent and -independent pathways shape RNASET2 expression in DCs, with new perspectives on its implication for TME and, therefore, in anti-tumor immunity.
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38
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Erra Díaz F, Ochoa V, Merlotti A, Dantas E, Mazzitelli I, Gonzalez Polo V, Sabatté J, Amigorena S, Segura E, Geffner J. Extracellular Acidosis and mTOR Inhibition Drive the Differentiation of Human Monocyte-Derived Dendritic Cells. Cell Rep 2021; 31:107613. [PMID: 32375041 DOI: 10.1016/j.celrep.2020.107613] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 01/31/2020] [Accepted: 04/14/2020] [Indexed: 12/13/2022] Open
Abstract
During inflammation, recruited monocytes can differentiate either into macrophages or dendritic cells (DCs); however, little is known about the environmental factors that determine this cell fate decision. Low extracellular pH is a hallmark of a variety of inflammatory processes and solid tumors. Here, we report that low pH dramatically promotes the differentiation of monocytes into DCs (monocyte-derived DCs [mo-DCs]). This process is associated with a reduction in glucose consumption and lactate production, the upregulation of mitochondrial respiratory chain genes, and the inhibition of mTORC1 activity. Interestingly, we also find that both serum starvation and pharmacological inhibition of mTORC1 markedly promote the differentiation of mo-DCs. Our study contributes to better understanding the mechanisms that govern the differentiation of monocytes into DCs and reveals the role of both extracellular pH and mTORC1 as master regulators of monocyte cell fate.
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Affiliation(s)
- Fernando Erra Díaz
- INBIRS, Universidad de Buenos Aires (UBA)-CONICET, Buenos Aires, Argentina
| | - Valeria Ochoa
- INBIRS, Universidad de Buenos Aires (UBA)-CONICET, Buenos Aires, Argentina
| | | | - Ezequiel Dantas
- INBIRS, Universidad de Buenos Aires (UBA)-CONICET, Buenos Aires, Argentina
| | - Ignacio Mazzitelli
- INBIRS, Universidad de Buenos Aires (UBA)-CONICET, Buenos Aires, Argentina
| | | | - Juan Sabatté
- INBIRS, Universidad de Buenos Aires (UBA)-CONICET, Buenos Aires, Argentina
| | | | - Elodie Segura
- Institut Curie, PSL Research University, INSERM, U932 Paris, France
| | - Jorge Geffner
- INBIRS, Universidad de Buenos Aires (UBA)-CONICET, Buenos Aires, Argentina.
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39
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Immunometabolism in systemic lupus erythematosus: Relevant pathogenetic mechanisms and potential clinical applications. J Formos Med Assoc 2021; 120:1667-1675. [PMID: 33836940 DOI: 10.1016/j.jfma.2021.03.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 03/15/2021] [Accepted: 03/17/2021] [Indexed: 12/15/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is a complex, heterogeneous, systemic autoimmune disease involving a wide array of aberrant innate and adaptive immune responses. The immune microenvironment of SLE promotes the metabolic reprogramming of immune cells, leading to immune dyshomeostasis and triggering autoimmune inflammation. Different immune subsets switch from a resting state to a highly metabolic active state by alternating the redox-sensitive signaling pathway and the involved metabolic intermediates to amplify the inflammatory response, which is critical in SLE pathogenesis. In this review, we discuss abnormal metabolic changes in glucose metabolism, tricarboxylic acid cycle, and lipid and amino acid metabolism as well as mitochondrial dysfunction in immune cells in SLE. We also review studies focused on the potential targets for key molecules of metabolic pathways in SLE, such as hypoxia-inducible factor-1α, mammalian target of rapamycin, and AMP-activated protein kinase. We highlight the therapeutic rationale for targeting these pathways in treating SLE and summarize their recent clinical applications in SLE.
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40
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Yang ZJ, Wang BY, Wang TT, Wang FF, Guo YX, Hua RX, Shang HW, Lu X, Xu JD. Functions of Dendritic Cells and Its Association with Intestinal Diseases. Cells 2021; 10:cells10030583. [PMID: 33800865 PMCID: PMC7999753 DOI: 10.3390/cells10030583] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 02/25/2021] [Accepted: 03/04/2021] [Indexed: 12/13/2022] Open
Abstract
Dendritic cells (DCs), including conventional DCs (cDCs) and plasmacytoid DCs (pDCs), serve as the sentinel cells of the immune system and are responsible for presenting antigen information. Moreover, the role of DCs derived from monocytes (moDCs) in the development of inflammation has been emphasized. Several studies have shown that the function of DCs can be influenced by gut microbes including gut bacteria and viruses. Abnormal changes/reactions in intestinal DCs are potentially associated with diseases such as inflammatory bowel disease (IBD) and intestinal tumors, allowing DCs to be a new target for the treatment of these diseases. In this review, we summarized the physiological functions of DCs in the intestinal micro-environment, their regulatory relationship with intestinal microorganisms and their regulatory mechanism in intestinal diseases.
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Affiliation(s)
- Ze-Jun Yang
- Clinical Medicine of “5 + 3” Program, Capital Medical University, Beijing 100069, China; (Z.-J.Y.); (F.-F.W.); (R.-X.H.)
| | - Bo-Ya Wang
- Undergraduate Student of 2018 Eight Years Program of Clinical Medicine, Peking University Health Science Center, Beijing 100081, China;
| | - Tian-Tian Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China;
| | - Fei-Fei Wang
- Clinical Medicine of “5 + 3” Program, Capital Medical University, Beijing 100069, China; (Z.-J.Y.); (F.-F.W.); (R.-X.H.)
| | - Yue-Xin Guo
- Oral Medicine of “5 + 3” Program, Capital Medical University, Beijing 100069, China;
| | - Rong-Xuan Hua
- Clinical Medicine of “5 + 3” Program, Capital Medical University, Beijing 100069, China; (Z.-J.Y.); (F.-F.W.); (R.-X.H.)
| | - Hong-Wei Shang
- Morphological Experiment Center, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China; (H.-W.S.); (X.L.)
| | - Xin Lu
- Morphological Experiment Center, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China; (H.-W.S.); (X.L.)
| | - Jing-Dong Xu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China;
- Correspondence:
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Peng X, He Y, Huang J, Tao Y, Liu S. Metabolism of Dendritic Cells in Tumor Microenvironment: For Immunotherapy. Front Immunol 2021; 12:613492. [PMID: 33732237 PMCID: PMC7959811 DOI: 10.3389/fimmu.2021.613492] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 01/25/2021] [Indexed: 12/12/2022] Open
Abstract
Dendritic cells (DCs) are a type of an antigen-presenting cell which undertake a job on capturing antigens coming from pathogens or tumors and presenting to T cells for immune response. The metabolism of DCs controls its development, polarization, and maturation processes and provides energy support for its functions. However, the immune activity of DCs in tumor microenvironment (TME) is inhibited generally. Abnormal metabolism of tumor cells causes metabolic changes in TME, such as hyperglycolysis, lactate and lipid accumulation, acidification, tryptophan deprivation, which limit the function of DCs and lead to the occurrence of tumor immune escape. Combined metabolic regulation with immunotherapy can strengthen the ability of antigen-presentation and T cell activation of DCs, improve the existing anti-tumor therapy, and overcome the defects of DC-related therapies in the current stage, which has great potential in oncology therapy. Therefore, we reviewed the glucose, lipid, and amino acid metabolism of DCs, as well as the metabolic changes after being affected by TME. Together with the potential metabolic targets of DCs, possible anti-tumor therapeutic pathways were summarized.
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Affiliation(s)
- Xin Peng
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China
| | - Youe He
- Department of Translational Medicine, Cancer Biological Treatment Center, Xiangya Hospital, Central South University, Changsha, China.,Institute of Medical Sciences, Xiangya Hospital, Central South University, Changsha, China
| | - Jun Huang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
| | - Yongguang Tao
- Key Laboratory of Carcinogenesis and Cancer Invasion, Ministry of Education, Department of Pathology, Xiangya Hospital, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis of Ministry of Health, Cancer Research Institute, School of Basic Medicine, Central South University, Changsha, China.,Hunan Key Laboratory of Tumor Models and Individualized Medicine, Department of Thoracic Surgery, Second Xiangya Hospital, Central South University, Changsha, China
| | - Shuang Liu
- Department of Oncology, Xiangya Hospital, Central South University, Changsha, China.,Institute of Medical Sciences, Xiangya Hospital, Central South University, Changsha, China.,Department of Oncology, Institute of Medical Sciences, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
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Martin-Cruz L, Sevilla-Ortega C, Benito-Villalvilla C, Diez‐Rivero CM, Sanchez-Ramón S, Subiza JL, Palomares O. A Combination of Polybacterial MV140 and Candida albicans V132 as a Potential Novel Trained Immunity-Based Vaccine for Genitourinary Tract Infections. Front Immunol 2021; 11:612269. [PMID: 33552074 PMCID: PMC7858650 DOI: 10.3389/fimmu.2020.612269] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 12/03/2020] [Indexed: 12/16/2022] Open
Abstract
Recurrent urinary tract infections (RUTIs) and recurrent vulvovaginal candidiasis (RVVCs) represent major healthcare problems with high socio-economic impact worldwide. Antibiotic and antifungal prophylaxis remain the gold standard treatments for RUTIs and RVVCs, contributing to the massive rise of antimicrobial resistance, microbiota alterations and co-infections. Therefore, the development of novel vaccine strategies for these infections are sorely needed. The sublingual heat-inactivated polyvalent bacterial vaccine MV140 shows clinical efficacy for the prevention of RUTIs and promotes Th1/Th17 and IL-10 immune responses. V132 is a sublingual preparation of heat-inactivated Candida albicans developed against RVVCs. A vaccine formulation combining both MV140 and V132 might well represent a suitable approach for concomitant genitourinary tract infections (GUTIs), but detailed mechanistic preclinical studies are still needed. Herein, we showed that the combination of MV140 and V132 imprints human dendritic cells (DCs) with the capacity to polarize potent IFN-γ- and IL-17A-producing T cells and FOXP3+ regulatory T (Treg) cells. MV140/V132 activates mitogen-activated protein kinases (MAPK)-, nuclear factor-κB (NF-κB)- and mammalian target of rapamycin (mTOR)-mediated signaling pathways in human DCs. MV140/V132 also promotes metabolic and epigenetic reprogramming in human DCs, which are key molecular mechanisms involved in the induction of innate trained immunity. Splenocytes from mice sublingually immunized with MV140/V132 display enhanced proliferative responses of CD4+ T cells not only upon in vitro stimulation with the related antigens contained in the vaccine formulation but also upon stimulation with phytohaemagglutinin. Additionally, in vivo sublingual immunization with MV140/V132 induces the generation of IgG and IgA antibodies against all the components contained in the vaccine formulation. We uncover immunological mechanisms underlying the potential mode of action of a combination of MV140 and V132 as a novel promising trained immunity-based vaccine (TIbV) for GUTIs.
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MESH Headings
- Animals
- Antigens, Bacterial/administration & dosage
- Antigens, Bacterial/immunology
- Antigens, Fungal/administration & dosage
- Antigens, Fungal/immunology
- Bacterial Infections/immunology
- Bacterial Infections/metabolism
- Bacterial Infections/microbiology
- Bacterial Infections/prevention & control
- Bacterial Vaccines/administration & dosage
- Bacterial Vaccines/immunology
- CD4-Positive T-Lymphocytes/drug effects
- CD4-Positive T-Lymphocytes/immunology
- Candidiasis, Vulvovaginal/immunology
- Candidiasis, Vulvovaginal/metabolism
- Candidiasis, Vulvovaginal/microbiology
- Candidiasis, Vulvovaginal/therapy
- Cells, Cultured
- Coculture Techniques
- Cytokines/metabolism
- Dendritic Cells/drug effects
- Dendritic Cells/immunology
- Female
- Fungal Vaccines/administration & dosage
- Fungal Vaccines/immunology
- Humans
- Lymphocyte Activation/drug effects
- Mice, Inbred BALB C
- Phenotype
- Urinary Tract Infections/immunology
- Urinary Tract Infections/metabolism
- Urinary Tract Infections/microbiology
- Urinary Tract Infections/prevention & control
- Vaccination
- Vaccines, Combined/administration & dosage
- Vaccines, Combined/immunology
- Mice
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Affiliation(s)
- Leticia Martin-Cruz
- Department of Biochemistry and Molecular Biology, School of Chemistry, Complutense University, Madrid, Spain
| | - Carmen Sevilla-Ortega
- Department of Biochemistry and Molecular Biology, School of Chemistry, Complutense University, Madrid, Spain
| | - Cristina Benito-Villalvilla
- Department of Biochemistry and Molecular Biology, School of Chemistry, Complutense University, Madrid, Spain
| | | | - Silvia Sanchez-Ramón
- Department of Clinical Immunology and IdISSC, Hospital Clínico San Carlos, Madrid, Spain
- Department of Immunology, ENT and Ophthalmology, School of Medicine, Complutense University, Madrid, Spain
| | | | - Oscar Palomares
- Department of Biochemistry and Molecular Biology, School of Chemistry, Complutense University, Madrid, Spain
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Chakraborty M, Chu K, Shrestha A, Revelo XS, Zhang X, Gold MJ, Khan S, Lee M, Huang C, Akbari M, Barrow F, Chan YT, Lei H, Kotoulas NK, Jovel J, Pastrello C, Kotlyar M, Goh C, Michelakis E, Clemente-Casares X, Ohashi PS, Engleman EG, Winer S, Jurisica I, Tsai S, Winer DA. Mechanical Stiffness Controls Dendritic Cell Metabolism and Function. Cell Rep 2021; 34:108609. [PMID: 33440149 DOI: 10.1016/j.celrep.2020.108609] [Citation(s) in RCA: 98] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 11/04/2020] [Accepted: 12/15/2020] [Indexed: 12/14/2022] Open
Abstract
Stiffness in the tissue microenvironment changes in most diseases and immunological conditions, but its direct influence on the immune system is poorly understood. Here, we show that static tension impacts immune cell function, maturation, and metabolism. Bone-marrow-derived and/or splenic dendritic cells (DCs) grown in vitro at physiological resting stiffness have reduced proliferation, activation, and cytokine production compared with cells grown under higher stiffness, mimicking fibro-inflammatory disease. Consistently, DCs grown under higher stiffness show increased activation and flux of major glucose metabolic pathways. In DC models of autoimmune diabetes and tumor immunotherapy, tension primes DCs to elicit an adaptive immune response. Mechanistic workup identifies the Hippo-signaling molecule, TAZ, as well as Ca2+-related ion channels, including potentially PIEZO1, as important effectors impacting DC metabolism and function under tension. Tension also directs the phenotypes of monocyte-derived DCs in humans. Thus, mechanical stiffness is a critical environmental cue of DCs and innate immunity.
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Affiliation(s)
- Mainak Chakraborty
- Division of Cellular and Molecular Biology, Diabetes Research Group, Toronto General Hospital Research Institute (TGHRI), University Health Network, Toronto, ON M5G 1L7, Canada
| | - Kevin Chu
- Department of Medical Microbiology and Immunology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Annie Shrestha
- Faculty of Dentistry, University of Toronto, Toronto, ON M5G 1G6, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Xavier S Revelo
- Center for Immunology, University of Minnesota, Minneapolis, MN 55455, USA; Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Xiangyue Zhang
- School of Medicine, Department of Pathology, Stanford University, Palo Alto, CA, USA
| | - Matthew J Gold
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 2M9, Canada
| | - Saad Khan
- Division of Cellular and Molecular Biology, Diabetes Research Group, Toronto General Hospital Research Institute (TGHRI), University Health Network, Toronto, ON M5G 1L7, Canada; Department of Immunology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Megan Lee
- Department of Medical Microbiology and Immunology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Camille Huang
- Department of Medical Microbiology and Immunology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Masoud Akbari
- Department of Medical Microbiology and Immunology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Fanta Barrow
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN 55455, USA
| | - Yi Tao Chan
- Department of Immunology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Helena Lei
- Division of Cellular and Molecular Biology, Diabetes Research Group, Toronto General Hospital Research Institute (TGHRI), University Health Network, Toronto, ON M5G 1L7, Canada
| | | | - Juan Jovel
- The Applied Genomics Core, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Chiara Pastrello
- Osteoarthritis Research Program, Division of Orthopedic Surgery, Schroeder Arthritis Institute, University Health Network, and Data Science Discovery Centre for Chronic Diseases, Krembil Research Institute, Toronto, ON M5T 0S8, Canada
| | - Max Kotlyar
- Osteoarthritis Research Program, Division of Orthopedic Surgery, Schroeder Arthritis Institute, University Health Network, and Data Science Discovery Centre for Chronic Diseases, Krembil Research Institute, Toronto, ON M5T 0S8, Canada
| | - Cynthia Goh
- Department of Chemistry, University of Toronto, Toronto, ON, Canada
| | - Evangelos Michelakis
- Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Xavier Clemente-Casares
- Department of Medical Microbiology and Immunology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Pamela S Ohashi
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 2M9, Canada; Department of Immunology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Edgar G Engleman
- School of Medicine, Department of Pathology, Stanford University, Palo Alto, CA, USA
| | - Shawn Winer
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada; Department of Laboratory Medicine, St. Michael's Hospital, Toronto, ON M5B 1W8, Canada
| | - Igor Jurisica
- Osteoarthritis Research Program, Division of Orthopedic Surgery, Schroeder Arthritis Institute, University Health Network, and Data Science Discovery Centre for Chronic Diseases, Krembil Research Institute, Toronto, ON M5T 0S8, Canada; Departments of Medical Biophysics and Computer Science, University of Toronto, Toronto, ON, Canada; Institute of Neuroimmunology, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Sue Tsai
- Department of Medical Microbiology and Immunology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2R3, Canada.
| | - Daniel A Winer
- Division of Cellular and Molecular Biology, Diabetes Research Group, Toronto General Hospital Research Institute (TGHRI), University Health Network, Toronto, ON M5G 1L7, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada; Department of Immunology, University of Toronto, Toronto, ON M5S 1A8, Canada; Department of Pathology, University Health Network, Toronto, ON M5G 2C4, Canada; Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945, USA.
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Wang JL, Wang Y, Gao TT, Liu L, Wang YJ, Guan W, Chen TT, Zhao J, Zhang Y, Jiang B. Venlafaxine protects against chronic stress-related behaviors in mice by activating the mTORC1 signaling cascade. J Affect Disord 2020; 276:525-536. [PMID: 32871684 DOI: 10.1016/j.jad.2020.07.096] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 07/02/2020] [Accepted: 07/06/2020] [Indexed: 12/28/2022]
Abstract
BACKGROUND Recent studies have suggested the role of mammalian target of rapamycin complex 1 (mTORC1) in the pathophysiology of depression. Although venlafaxine was thought to be a serotonin and norepinephrine reuptake inhibitor (SNRI), its pharmacological mechanism remain elusive. In this study, the effects of venlafaxine on the mTORC1 system were studied in both chronic unpredictable mild stress (CUMS) and chronic social defeat stress (CSDS) models. METHOD First, we examined whether repeated venlafaxine treatment reversed the effects of CUMS and CSDS on the mTORC1 signaling cascade in both the hippocampus and medial prefrontal cortex (mPFC). Second, several selective pharmacological inhibitors of the mTORC1 system, including rapamycin, LY294002 and U0126, were used together to determine whether the protective effects of venlafaxine against the CUMS and CSDS models were prevented by mTORC1 system blockade. Finally, genetic knockdown of mTORC1 by mTORC1-shRNA was further adopted to test whether mTORC1 was necessary for the anti-stress effects of venlafaxine in mice. RESULT Our results showed that the decreasing effects of CUMS and CSDS on the mTORC1 signaling cascade in the hippocampus and mPFC were restored by venlafaxine, and the use of rapamycin, LY294002, U0126 and mTORC1-shRNA fully abolished the anti-stress actions of venlafaxine in mice. CONCLUSION The mTORC1 system is involved in the pharmacological mechanism of venlafaxine.
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Affiliation(s)
- Jin-Liang Wang
- Department of Pharmacology, School of Pharmacy, Nantong University, Nantong 226001, Jiangsu, China; Provincial key laboratory of Inflammation and Molecular Drug Target, Jiangsu, China
| | - Yuan Wang
- Department of Pharmacology, School of Pharmacy, Nantong University, Nantong 226001, Jiangsu, China; Provincial key laboratory of Inflammation and Molecular Drug Target, Jiangsu, China
| | - Ting-Ting Gao
- Department of Pharmacology, School of Pharmacy, Nantong University, Nantong 226001, Jiangsu, China; Provincial key laboratory of Inflammation and Molecular Drug Target, Jiangsu, China
| | - Ling Liu
- Department of Pharmacology, School of Pharmacy, Nantong University, Nantong 226001, Jiangsu, China; Provincial key laboratory of Inflammation and Molecular Drug Target, Jiangsu, China
| | - Ying-Jie Wang
- Department of Pharmacology, School of Pharmacy, Nantong University, Nantong 226001, Jiangsu, China; Provincial key laboratory of Inflammation and Molecular Drug Target, Jiangsu, China
| | - Wei Guan
- Department of Pharmacology, School of Pharmacy, Nantong University, Nantong 226001, Jiangsu, China; Provincial key laboratory of Inflammation and Molecular Drug Target, Jiangsu, China
| | - Ting-Ting Chen
- Department of Pharmacology, School of Pharmacy, Nantong University, Nantong 226001, Jiangsu, China; Provincial key laboratory of Inflammation and Molecular Drug Target, Jiangsu, China
| | - Jie Zhao
- Department of Pharmacy, The Sixth People's Hospital of Nantong, Nantong 226011, Jiangsu, China
| | - Yin Zhang
- Department of Pharmacology, School of Pharmacy, Nantong University, Nantong 226001, Jiangsu, China
| | - Bo Jiang
- Department of Pharmacology, School of Pharmacy, Nantong University, Nantong 226001, Jiangsu, China; Provincial key laboratory of Inflammation and Molecular Drug Target, Jiangsu, China.
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45
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Interferon-λ Enhances the Differentiation of Naive B Cells into Plasmablasts via the mTORC1 Pathway. Cell Rep 2020; 33:108211. [DOI: 10.1016/j.celrep.2020.108211] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 06/24/2020] [Accepted: 09/09/2020] [Indexed: 01/21/2023] Open
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Liu D, Zuo X, Luo H, Zhu H. The altered metabolism profile in pathogenesis of idiopathic inflammatory myopathies. Semin Arthritis Rheum 2020; 50:627-635. [PMID: 32502727 DOI: 10.1016/j.semarthrit.2020.05.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 04/28/2020] [Accepted: 05/11/2020] [Indexed: 11/29/2022]
Abstract
Idiopathic inflammatory myopathies (IIMs) are a group of heterogeneous autoimmune diseases characterized by muscle weakness, muscle inflammation and extramuscular manifestations. Despite extensive efforts, the mechanisms of IIMs remain largely unknown, and treatment is still a challenge for physicians. Metabolism changes have emerged as a crucial player in autoimmune diseases, such as systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA). However, little is known about metabolism changes in IIMs. In this review, we focus on the alteration of metabolism profile in IIMs, and the relationships with clinical information. We highlight the potential roles of metabolism in the pathogenesis of IIMs and discuss future perspectives for metabolic checkpoint-based therapeutic interventions.
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Affiliation(s)
- Di Liu
- Department of Rheumatology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan 410008, People's Republic of China
| | - Xiaoxia Zuo
- Department of Rheumatology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan 410008, People's Republic of China
| | - Hui Luo
- Department of Rheumatology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan 410008, People's Republic of China
| | - Honglin Zhu
- Department of Rheumatology, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, Hunan 410008, People's Republic of China.
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47
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Zhang CX, Wang HY, Yin L, Mao YY, Zhou W. Immunometabolism in the pathogenesis of systemic lupus erythematosus. J Transl Autoimmun 2020; 3:100046. [PMID: 32743527 PMCID: PMC7388408 DOI: 10.1016/j.jtauto.2020.100046] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 03/07/2020] [Accepted: 03/08/2020] [Indexed: 12/25/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is a typical autoimmune disease characterized by chronic inflammation and pathogenic auto-antibodies. Apart from B cells, dysregulation of other immune cells also plays an essential role in the pathogenesis and development of the disease including CD4+T cells, dendritic cells, macrophages and neutrophils. Since metabolic programs control immune cell fate and function, they are critical checkpoints in an effective immune response and are involved in the etiology of autoimmune disease. In addition, mitochondria and oxidative stress are both involved in cellular metabolism and is also essential in immune response. In this review, apart from the disturbed immune system, we will discuss mitochondrial dysfunction, oxidative stress, abnormal metabolism (including glucose, lipid and amino acid metabolism) of immune cells as well as epigenetic control of metabolism reprogramming to elucidate the underlying pathogenic mechanisms of systemic lupus erythematosus. Mitochondria plays a vital role in cellular metabolism and is involved in immune response. There are alterations in glucose, lipid and amino acid metabolism of various immune cells in SLE patients. Epigenetic status is influenced by the presence of metabolic intermediates and certain autoimmunity-related genes are hypomethylated in CD4+T cells, CD19+ B cells as well as CD14+ monocytes of SLE.
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Affiliation(s)
- Chen-Xing Zhang
- Department of Nephrology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 200127, Shanghai, China
| | - Hui-Yu Wang
- Institute of Physiological Chemistry and Pathobiochemistry, University of Muenster, 48149, Muenster, Germany
| | - Lei Yin
- Department of Nephrology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 200127, Shanghai, China
| | - You-Ying Mao
- Department of Nephrology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 200127, Shanghai, China
| | - Wei Zhou
- Department of Nephrology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, 200127, Shanghai, China
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Teng X, Brown J, Choi SC, Li W, Morel L. Metabolic determinants of lupus pathogenesis. Immunol Rev 2020; 295:167-186. [PMID: 32162304 DOI: 10.1111/imr.12847] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 02/20/2020] [Accepted: 02/24/2020] [Indexed: 12/12/2022]
Abstract
The metabolism of healthy murine and more recently human immune cells has been investigated with an increasing amount of details. These studies have revealed the challenges presented by immune cells to respond rapidly to a wide variety of triggers by adjusting the amount, type, and utilization of the nutrients they import. A concept has emerged that cellular metabolic programs regulate the size of the immune response and the plasticity of its effector functions. This has generated a lot of enthusiasm with the prediction that cellular metabolism could be manipulated to either enhance or limit an immune response. In support of this hypothesis, studies in animal models as well as human subjects have shown that the dysregulation of the immune system in autoimmune diseases is associated with a skewing of the immunometabolic programs. These studies have been mostly conducted on autoimmune CD4+ T cells, with the metabolism of other immune cells in autoimmune settings still being understudied. Here we discuss systemic metabolism as well as cellular immunometabolism as novel tools to decipher fundamental mechanisms of autoimmunity. We review the contribution of each major metabolic pathway to autoimmune diseases, with a focus on systemic lupus erythematosus (SLE), with the relevant translational opportunities, existing or predicted from results obtained with healthy immune cells. Finally, we review how targeting metabolic programs may present novel therapeutic venues.
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Affiliation(s)
- Xiangyu Teng
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL, USA
| | - Josephine Brown
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL, USA
| | - Seung-Chul Choi
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL, USA
| | - Wei Li
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL, USA
| | - Laurence Morel
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL, USA
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Benito‐Villalvilla C, Soria I, Pérez‐Diego M, Fernández‐Caldas E, Subiza JL, Palomares O. Alum impairs tolerogenic properties induced by allergoid-mannan conjugates inhibiting mTOR and metabolic reprogramming in human DCs. Allergy 2020; 75:648-659. [PMID: 31494959 PMCID: PMC7079174 DOI: 10.1111/all.14036] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/26/2019] [Accepted: 08/16/2019] [Indexed: 12/13/2022]
Abstract
Background Polymerized allergoids conjugated to mannan (PM) are suitable vaccines for allergen‐specific immunotherapy (AIT). Alum remains the most widely used adjuvant in AIT, but its way of action is not completely elucidated. The better understanding of the mechanisms underlying alum adjuvanticity could help to improve AIT vaccine formulations. Objective We sought to investigate the potential influence of alum in the tolerogenic properties imprinted by PM at the molecular level. Methods Flow cytometry, ELISAs, cocultures, intracellular staining and suppression assays were performed to assess alum and PM effects in human dendritic cells (DCs). BALB/c mice were immunized with PM alone or adsorbed to alum. Allergen‐specific antibodies, splenocyte cytokine production and splenic forkhead box P3 (FOXP3)+ regulatory T (Treg) cells were quantified. Metabolic and immune pathways were also studied in human DCs. Results Alum decreases PD‐L1 expression and IL‐10 production induced by PM in human DCs and increases pro‐inflammatory cytokine production. Alum impairs PM‐induced functional FOXP3+ Treg cells and promotes Th1/Th2/Th17 responses. Subcutaneous immunization of mice with PM plus alum inhibits in vivo induction of Treg cells promoted by PM without altering the capacity to induce functional allergen‐specific blocking antibodies. Alum inhibits mTOR activation and alters metabolic reprogramming by shifting glycolytic pathways and inhibiting reactive oxygen species (ROS) production in PM‐activated DCs, impairing their capacity to generate functional Treg cells. Conclusion We uncover novel mechanisms by which alum impairs the tolerogenic properties induced by PM, which might well contribute to improve the formulation of novel vaccines for AIT.
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Affiliation(s)
| | | | - Mario Pérez‐Diego
- Department of Biochemistry and Molecular Biology School of Chemistry Complutense University Madrid Spain
| | - Enrique Fernández‐Caldas
- Inmunotek Alcalá de Henares Madrid Spain
- University of South Florida College of Medicine Tampa FL USA
| | | | - Oscar Palomares
- Department of Biochemistry and Molecular Biology School of Chemistry Complutense University Madrid Spain
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50
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Švajger U, Rožman PJ. Recent discoveries in dendritic cell tolerance-inducing pharmacological molecules. Int Immunopharmacol 2020; 81:106275. [PMID: 32044665 DOI: 10.1016/j.intimp.2020.106275] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 01/31/2020] [Accepted: 01/31/2020] [Indexed: 01/04/2023]
Abstract
Dendritic cells (DCs) represent one of the most important biological tools for cellular immunotherapy purposes. There are an increasing number of phase I and II studies, where regulatory or tolerogenic DCs (TolDCs) are utilized as negative vaccines, with the aim of inducing tolerogenic outcomes in patients with various autoimmune or chronic-inflammatory diseases, as well as in transplant settings. The induction of tolerogenic properties in DCs can be achieved by altering their activation state toward expression of immunosuppressive elements and/or by achieving resistance to maturation, which leads to insufficient co-stimulatory signal delivery and inability to efficiently present antigens. In the past, one of the most efficient ways to induce DC tolerance has been the application of selected pharmacological agents which actively induce a tolerogenic transcription program or inhibit major pro-inflammatory transcription factors such as Nf-κB. Important examples include immunosuppressants such as different corticosteroids, vitamin D3, rapamycin and others. The quality of TolDCs induced by different approaches is becoming a vital issue and recent evidence suggests substantial heterogeneity between variously-generated TolDCs as evidenced by their transcriptomic profile and function. The possibility of various "flavors" of TolDCs encourages future research in discovery of Tol-DC inducing agents to enrich various ways of DC manipulation. This would enable a broader range of tools to manipulate DC toward specific characteristics desirable in different disease settings. In recent years, several novel small molecules have been identified with the capacity to promote DC tolerogenic characteristics. In this review, we will present and discuss these novel findings and also highlight novel understandings of tolerogenic mechanisms by which DC tolerogenicity is induced by already established agents.
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Affiliation(s)
- Urban Švajger
- Blood Transfusion Center of Slovenia, Šlajmerjeva 6, 1000 Ljubljana, Slovenia.
| | - Primož J Rožman
- Blood Transfusion Center of Slovenia, Šlajmerjeva 6, 1000 Ljubljana, Slovenia
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