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Jiang L, Hu Y, Zhang Y, Zhao Y, Gao L, Dong Y, Liang Y, Guo H, Wu S, Zhang Y, Chen J, Zeng Q. Abnormal metabolism in melanocytes participates in the activation of dendritic cell in halo nevus. Clin Immunol 2024; 265:110300. [PMID: 38950722 DOI: 10.1016/j.clim.2024.110300] [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: 10/16/2023] [Revised: 06/16/2024] [Accepted: 06/24/2024] [Indexed: 07/03/2024]
Abstract
A comprehensive analysis of spatial transcriptomics was carried out to better understand the progress of halo nevus. We found that halo nevus was characterized by overactive immune responses, triggered by chemokines and dendritic cells (DCs), T cells, and macrophages. Consequently, we observed abnormal cell death, such as apoptosis and disulfidptosis in halo nevus, some were closely related to immunity. Interestingly, we identified aberrant metabolites such as uridine diphosphate glucose (UDP-G) within the halo nevus. UDP-G, accompanied by the infiltration of DCs and T cells, exhibited correlations with certain forms of cell death. Subsequent experiments confirmed that UDP-G was increased in vitiligo serum and could activate DCs. We also confirmed that oxidative response is an inducer of UDP-G. In summary, the immune response in halo nevus, including DC activation, was accompanied by abnormal cell death and metabolites. Especially, melanocyte-derived UDP-G may play a crucial role in DC activation.
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Affiliation(s)
- Ling Jiang
- Department of Dermatology, The Third Xiangya Hospital, Central South University, No.138 Tongzipo Road, Changsha, Hunan 410013, PR China
| | - Yibo Hu
- Clinical Research Center, The Second Xiangya Hospital, Central South University, No.139 Renmin Road, Changsha, Hunan 410011, PR China
| | - Yushan Zhang
- Department of Dermatology, The Third Xiangya Hospital, Central South University, No.138 Tongzipo Road, Changsha, Hunan 410013, PR China
| | - Yuanyuan Zhao
- Department of Dermatology, The Third Xiangya Hospital, Central South University, No.138 Tongzipo Road, Changsha, Hunan 410013, PR China
| | - Lijuan Gao
- Department of Dermatology, The Third Xiangya Hospital, Central South University, No.138 Tongzipo Road, Changsha, Hunan 410013, PR China
| | - Yumeng Dong
- Department of Dermatology, The Third Xiangya Hospital, Central South University, No.138 Tongzipo Road, Changsha, Hunan 410013, PR China
| | - Yixuan Liang
- Department of Dermatology, The Third Xiangya Hospital, Central South University, No.138 Tongzipo Road, Changsha, Hunan 410013, PR China
| | - Haoran Guo
- Department of Dermatology, The Third Xiangya Hospital, Central South University, No.138 Tongzipo Road, Changsha, Hunan 410013, PR China
| | - Songjiang Wu
- Department of Dermatology, The Third Xiangya Hospital, Central South University, No.138 Tongzipo Road, Changsha, Hunan 410013, PR China
| | - Yuanmin Zhang
- Department of Dermatology, The Third Xiangya Hospital, Central South University, No.138 Tongzipo Road, Changsha, Hunan 410013, PR China
| | - Jing Chen
- Department of Dermatology, The Third Xiangya Hospital, Central South University, No.138 Tongzipo Road, Changsha, Hunan 410013, PR China
| | - Qinghai Zeng
- Department of Dermatology, The Third Xiangya Hospital, Central South University, No.138 Tongzipo Road, Changsha, Hunan 410013, PR China.
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Kemp F, Braverman EL, Byersdorfer CA. Fatty acid oxidation in immune function. Front Immunol 2024; 15:1420336. [PMID: 39007133 PMCID: PMC11240245 DOI: 10.3389/fimmu.2024.1420336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Accepted: 05/31/2024] [Indexed: 07/16/2024] Open
Abstract
Cellular metabolism is a crucial determinant of immune cell fate and function. Extensive studies have demonstrated that metabolic decisions influence immune cell activation, differentiation, and cellular capacity, in the process impacting an organism's ability to stave off infection or recover from injury. Conversely, metabolic dysregulation can contribute to the severity of multiple disease conditions including autoimmunity, alloimmunity, and cancer. Emerging data also demonstrate that metabolic cues and profiles can influence the success or failure of adoptive cellular therapies. Importantly, immunometabolism is not one size fits all; and different immune cell types, and even subdivisions within distinct cell populations utilize different metabolic pathways to optimize function. Metabolic preference can also change depending on the microenvironment in which cells are activated. For this reason, understanding the metabolic requirements of different subsets of immune cells is critical to therapeutically modulating different disease states or maximizing cellular function for downstream applications. Fatty acid oxidation (FAO), in particular, plays multiple roles in immune cells, providing both pro- and anti-inflammatory effects. Herein, we review the major metabolic pathways available to immune cells, then focus more closely on the role of FAO in different immune cell subsets. Understanding how and why FAO is utilized by different immune cells will allow for the design of optimal therapeutic interventions targeting this pathway.
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Affiliation(s)
| | | | - Craig A. Byersdorfer
- Department of Pediatrics, Division of Blood and Marrow Transplant and Cellular Therapies, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
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Acevedo N, Lozano A, Zakzuk J, Llinás-Caballero K, Brodin D, Nejsum P, Williams AR, Caraballo L. Cystatin from the helminth Ascaris lumbricoides upregulates mevalonate and cholesterol biosynthesis pathways and immunomodulatory genes in human monocyte-derived dendritic cells. Front Immunol 2024; 15:1328401. [PMID: 38481989 PMCID: PMC10936004 DOI: 10.3389/fimmu.2024.1328401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 02/06/2024] [Indexed: 04/08/2024] Open
Abstract
Background Ascaris lumbricoides cystatin (Al-CPI) prevents the development of allergic airway inflammation and dextran-induced colitis in mice models. It has been suggested that helminth-derived cystatins inhibit cathepsins in dendritic cells (DC), but their immunomodulatory mechanisms are unclear. We aimed to analyze the transcriptional profile of human monocyte-derived DC (moDC) upon stimulation with Al-CPI to elucidate target genes and pathways of parasite immunomodulation. Methods moDC were generated from peripheral blood monocytes from six healthy human donors of Denmark, stimulated with 1 µM of Al-CPI, and cultured for 5 hours at 37°C. RNA was sequenced using TrueSeq RNA libraries and the NextSeq 550 v2.5 (75 cycles) sequencing kit (Illumina, Inc). After QC, reads were aligned to the human GRCh38 genome using Spliced Transcripts Alignment to a Reference (STAR) software. Differential expression was calculated by DESEq2 and expressed in fold changes (FC). Cell surface markers and cytokine production by moDC were evaluated by flow cytometry. Results Compared to unstimulated cells, Al-CPI stimulated moDC showed differential expression of 444 transcripts (|FC| ≥1.3). The top significant differences were in Kruppel-like factor 10 (KLF10, FC 3.3, PBH = 3 x 10-136), palladin (FC 2, PBH = 3 x 10-41), and the low-density lipoprotein receptor (LDLR, FC 2.6, PBH = 5 x 10-41). Upregulated genes were enriched in regulation of cholesterol biosynthesis by sterol regulatory element-binding proteins (SREBP) signaling pathways and immune pathways. Several genes in the cholesterol biosynthetic pathway showed significantly increased expression upon Al-CPI stimulation, even in the presence of lipopolysaccharide (LPS). Regarding the pathway of negative regulation of immune response, we found a significant decrease in the cell surface expression of CD86, HLA-DR, and PD-L1 upon stimulation with 1 µM Al-CPI. Conclusion Al-CPI modifies the transcriptome of moDC, increasing several transcripts encoding enzymes involved in cholesterol biosynthesis and SREBP signaling. Moreover, Al-CPI target several transcripts in the TNF-alpha signaling pathway influencing cytokine release by moDC. In addition, mRNA levels of genes encoding KLF10 and other members of the TGF beta and the IL-10 families were also modified by Al-CPI stimulation. The regulation of the mevalonate pathway and cholesterol biosynthesis suggests new mechanisms involved in DC responses to helminth immunomodulatory molecules.
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Affiliation(s)
- Nathalie Acevedo
- Institute for Immunological Research, University of Cartagena, Cartagena, Colombia
| | - Ana Lozano
- Institute for Immunological Research, University of Cartagena, Cartagena, Colombia
| | - Josefina Zakzuk
- Institute for Immunological Research, University of Cartagena, Cartagena, Colombia
| | | | - David Brodin
- Bioinformatics and Expression Analysis Core Facility (BEA), Karolinska Institutet, Huddinge, Sweden
| | - Peter Nejsum
- Department of Clinical Medicine. Aarhus University, Aarhus, Denmark
| | - Andrew R. Williams
- Department of Veterinary and Animal Sciences. University of Copenhagen, Frederiksberg, Denmark
| | - Luis Caraballo
- Institute for Immunological Research, University of Cartagena, Cartagena, Colombia
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Wang Z, Liu N, Yang Y, Tu Z. The novel mechanism facilitating chronic hepatitis B infection: immunometabolism and epigenetic modification reprogramming. Front Immunol 2024; 15:1349867. [PMID: 38288308 PMCID: PMC10822934 DOI: 10.3389/fimmu.2024.1349867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 01/02/2024] [Indexed: 01/31/2024] Open
Abstract
Hepatitis B Virus (HBV) infections pose a global public health challenge. Despite extensive research on this disease, the intricate mechanisms underlying persistent HBV infection require further in-depth elucidation. Recent studies have revealed the pivotal roles of immunometabolism and epigenetic reprogramming in chronic HBV infection. Immunometabolism have identified as the process, which link cell metabolic status with innate immunity functions in response to HBV infection, ultimately contributing to the immune system's inability to resolve Chronic Hepatitis B (CHB). Within hepatocytes, HBV replication leads to a stable viral covalently closed circular DNA (cccDNA) minichromosome located in the nucleus, and epigenetic modifications in cccDNA enable persistence of infection. Additionally, the accumulation or depletion of metabolites not only directly affects the function and homeostasis of immune cells but also serves as a substrate for regulating epigenetic modifications, subsequently influencing the expression of antiviral immune genes and facilitating the occurrence of sustained HBV infection. The interaction between immunometabolism and epigenetic modifications has led to a new research field, known as metabolic epigenomics, which may form a mutually reinforcing relationship with CHB. Herein, we review the recent studies on immunometabolism and epigenetic reprogramming in CHB infection and discuss the potential mechanisms of persistent HBV infection. A deeper understanding of these mechanisms will offer novel insights and targets for intervention strategies against chronic HBV infection, thereby providing new hope for the treatment of related diseases.
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Affiliation(s)
- Zhengmin Wang
- Department of Hepatology, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Nan Liu
- Institute of Epigenetic Medicine, First Hospital of Jilin University, Changchun, China
| | - Yang Yang
- Department of Hepatology, The First Hospital of Jilin University, Changchun, Jilin, China
| | - Zhengkun Tu
- Department of Hepatology, The First Hospital of Jilin University, Changchun, Jilin, China
- Institute of Liver Diseases, The First Hospital of Jilin University, Changchun, Jilin, China
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Xu W, Liu W, Yang J, Lu J, Zhang H, Ye D. Stimuli-responsive nanodelivery systems for amplifying immunogenic cell death in cancer immunotherapy. Immunol Rev 2024; 321:181-198. [PMID: 37403660 DOI: 10.1111/imr.13237] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 06/23/2023] [Accepted: 06/26/2023] [Indexed: 07/06/2023]
Abstract
Immunogenic cell death (ICD) is a special pattern of tumor cell death, enabling to elicit tumor-specific immune response via the release of damage-associated molecular patterns and tumor-associated antigens in the tumor microenvironment. ICD-induced immunotherapy holds the promise for completely eliminating tumors and long-term protective antitumor immune response. Increasing ICD inducers have been discovered for boosting antitumor immunity via evoking ICD. Nonetheless, the utilization of ICD inducers remains insufficient owing to serious toxic reactions, low localization efficiency within the tumor microenvironmental niche, etc. For overcoming such limitations, stimuli-responsive multifunctional nanoparticles or nanocomposites with ICD inducers have been developed for improving immunotherapeutic efficiency via lowering toxicity, which represent a prospective scheme for fostering the utilization of ICD inducers in immunotherapy. This review outlines the advances in near-infrared (NIR)-, pH-, redox-, pH- and redox-, or NIR- and tumor microenvironment-responsive nanodelivery systems for ICD induction. Furthermore, we discuss their clinical translational potential. The progress of stimuli-responsive nanoparticles in clinical settings depends upon the development of biologically safer drugs tailored to patient needs. Moreover, an in-depth comprehending of ICD biomarkers, immunosuppressive microenvironment, and ICD inducers may accelerate the advance in smarter multifunctional nanodelivery systems to further amplify ICD.
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Affiliation(s)
- Wenhao Xu
- Department of Urology, Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China
- Shanghai Genitourinary Cancer Institute, Shanghai, China
| | - Wangrui Liu
- Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jianfeng Yang
- Department of Surgery, ShangNan Branch of Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jiahe Lu
- Department of Urology, Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China
- Shanghai Genitourinary Cancer Institute, Shanghai, China
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, UK
| | - Hailiang Zhang
- Department of Urology, Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China
- Shanghai Genitourinary Cancer Institute, Shanghai, China
| | - Dingwei Ye
- Department of Urology, Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China
- Shanghai Genitourinary Cancer Institute, Shanghai, China
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Sun Z, Zhang L, Liu L. Reprogramming the lipid metabolism of dendritic cells in tumor immunomodulation and immunotherapy. Biomed Pharmacother 2023; 167:115574. [PMID: 37757492 DOI: 10.1016/j.biopha.2023.115574] [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: 08/02/2023] [Revised: 09/16/2023] [Accepted: 09/21/2023] [Indexed: 09/29/2023] Open
Abstract
Dendritic cells (DCs) are the most potent antigen-presenting cells in the human body. They detect and process environmental signals and communicate with T cells to bridge innate and adaptive immunity. Cell activation, function, and survival are closely associated with cellular metabolism. An increasing number of studies have revealed that lipid metabolism affects DC activation as well as innate and acquired immune responses. Combining lipid 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 cancer therapy. This review summarizes the lipid metabolism of DCs under physiological conditions, analyzes the role of reprogramming the lipid metabolism of DCs in tumor immune regulation, and discusses potential immunotherapeutic strategies.
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Affiliation(s)
- Zhanbo Sun
- Department of Radiology, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Lingyun Zhang
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang 110001, China
| | - Lixian Liu
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, China.
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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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Torres RM, Cyster J. Lipid mediators in the regulation of innate and adaptive immunity. Immunol Rev 2023; 317:4-7. [PMID: 37243330 DOI: 10.1111/imr.13228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 05/19/2023] [Indexed: 05/28/2023]
Affiliation(s)
- Raul M Torres
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Jason Cyster
- Department of Microbiology and Immunology and Howard Hughes Medical Institute, University of California, San Francisco, California, USA
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Guo C, You Z, Shi H, Sun Y, Du X, Palacios G, Guy C, Yuan S, Chapman NM, Lim SA, Sun X, Saravia J, Rankin S, Dhungana Y, Chi H. SLC38A2 and glutamine signalling in cDC1s dictate anti-tumour immunity. Nature 2023; 620:200-208. [PMID: 37407815 PMCID: PMC10396969 DOI: 10.1038/s41586-023-06299-8] [Citation(s) in RCA: 44] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 06/08/2023] [Indexed: 07/07/2023]
Abstract
Cancer cells evade T cell-mediated killing through tumour-immune interactions whose mechanisms are not well understood1,2. Dendritic cells (DCs), especially type-1 conventional DCs (cDC1s), mediate T cell priming and therapeutic efficacy against tumours3. DC functions are orchestrated by pattern recognition receptors3-5, although other signals involved remain incompletely defined. Nutrients are emerging mediators of adaptive immunity6-8, but whether nutrients affect DC function or communication between innate and adaptive immune cells is largely unresolved. Here we establish glutamine as an intercellular metabolic checkpoint that dictates tumour-cDC1 crosstalk and licenses cDC1 function in activating cytotoxic T cells. Intratumoral glutamine supplementation inhibits tumour growth by augmenting cDC1-mediated CD8+ T cell immunity, and overcomes therapeutic resistance to checkpoint blockade and T cell-mediated immunotherapies. Mechanistically, tumour cells and cDC1s compete for glutamine uptake via the transporter SLC38A2 to tune anti-tumour immunity. Nutrient screening and integrative analyses show that glutamine is the dominant amino acid in promoting cDC1 function. Further, glutamine signalling via FLCN impinges on TFEB function. Loss of FLCN in DCs selectively impairs cDC1 function in vivo in a TFEB-dependent manner and phenocopies SLC38A2 deficiency by eliminating the anti-tumour therapeutic effect of glutamine supplementation. Our findings establish glutamine-mediated intercellular metabolic crosstalk between tumour cells and cDC1s that underpins tumour immune evasion, and reveal glutamine acquisition and signalling in cDC1s as limiting events for DC activation and putative targets for cancer treatment.
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Affiliation(s)
- Chuansheng Guo
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Zhiyuan You
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Hao Shi
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Yu Sun
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Xingrong Du
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Gustavo Palacios
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Cliff Guy
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Sujing Yuan
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Nicole M Chapman
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Seon Ah Lim
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Xiang Sun
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Jordy Saravia
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Sherri Rankin
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Yogesh Dhungana
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | - Hongbo Chi
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA.
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