1
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Zhang H, Li M, Hu CJ, Stenmark KR. Fibroblasts in Pulmonary Hypertension: Roles and Molecular Mechanisms. Cells 2024; 13:914. [PMID: 38891046 PMCID: PMC11171669 DOI: 10.3390/cells13110914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 05/17/2024] [Accepted: 05/22/2024] [Indexed: 06/20/2024] Open
Abstract
Fibroblasts, among the most prevalent and widely distributed cell types in the human body, play a crucial role in defining tissue structure. They do this by depositing and remodeling extracellular matrixes and organizing functional tissue networks, which are essential for tissue homeostasis and various human diseases. Pulmonary hypertension (PH) is a devastating syndrome with high mortality, characterized by remodeling of the pulmonary vasculature and significant cellular and structural changes within the intima, media, and adventitia layers. Most research on PH has focused on alterations in the intima (endothelial cells) and media (smooth muscle cells). However, research over the past decade has provided strong evidence of the critical role played by pulmonary artery adventitial fibroblasts in PH. These fibroblasts exhibit the earliest, most dramatic, and most sustained proliferative, apoptosis-resistant, and inflammatory responses to vascular stress. This review examines the aberrant phenotypes of PH fibroblasts and their role in the pathogenesis of PH, discusses potential molecular signaling pathways underlying these activated phenotypes, and highlights areas of research that merit further study to identify promising targets for the prevention and treatment of PH.
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Affiliation(s)
- Hui Zhang
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Min Li
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Cheng-Jun Hu
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO 80045, USA
- Department of Craniofacial Biology, University of Colorado School of Dental Medicine, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Kurt R. Stenmark
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO 80045, USA
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2
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Li Y, Wu Y, Li H, Wang M, Gao Y, Pei S, Liu S, Liu Z, Liu Z, Men L. UPLC-QTOF-MS based metabolomics unravels the modulatory effect of ginseng water extracts on rats with Qi-deficiency. J Pharm Biomed Anal 2024; 242:116019. [PMID: 38382315 DOI: 10.1016/j.jpba.2024.116019] [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: 11/30/2023] [Revised: 01/29/2024] [Accepted: 02/05/2024] [Indexed: 02/23/2024]
Abstract
Ginseng is commonly used as a nutritional supplement and daily wellness product due to its ability to invigorate qi. As a result, individuals with Qi-deficiency often use ginseng as a health supplement. Ginsenosides and polysaccharides are the primary components of ginseng. However, the therapeutic effects and mechanisms of action of these components in Qi-deficiency remain unclear. This study aimed to determine the modulatory effects and mechanisms of ginseng water extract, ginsenosides, and ginseng polysaccharides in a rat model of Qi-deficiency using metabolomics and network analysis. The rat model of Qi-deficiency was established via swimming fatigue and a restricted diet. Oral administration of different ginseng water extracts for 30 days primarily alleviated oxidative stress and disrupted energy metabolism and immune response dysfunction caused by Qi-deficiency in rats. Ultra-high-performance liquid chromatography combined with quadrupole time-of-flight mass spectrometry (UPLC-QTOF-MS) was used for untargeted serum metabolomic analysis. Based on the analysis results, the active constituents of ginseng significantly reversed the changes in serum biomarkers related to Qi-deficiency in rats, particularly energy, amino acid, and unsaturated fatty acid metabolism. Furthermore, analysis of the metabolite-gene network suggested that the anti-Qi-deficiency effects of the ginseng components were mainly associated with toll-like receptor (TLR) signaling and inflammatory response. Additional verification revealed that treatment with the ginseng components effectively reduced the inflammatory response and activation of the myocardial TLR4/NF-κB pathway induced by Qi-deficiency, especially the ginseng water extracts. Therefore, ginseng could be an effective preventive measure against the progression of Qi-deficiency by regulating metabolic and inflammatory responses.
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Affiliation(s)
- Yanyi Li
- School of Pharmaceutical Sciences, Jilin University, Changchun 130021, PR China
| | - Yi Wu
- School of Pharmaceutical Sciences, Jilin University, Changchun 130021, PR China.
| | - Hanlin Li
- School of Pharmaceutical Sciences, Jilin University, Changchun 130021, PR China
| | - Meiyuan Wang
- School of Pharmaceutical Sciences, Jilin University, Changchun 130021, PR China
| | - Yang Gao
- School of Pharmaceutical Sciences, Jilin University, Changchun 130021, PR China
| | - Shuhua Pei
- School of Pharmaceutical Sciences, Jilin University, Changchun 130021, PR China
| | - Shu Liu
- National Center of Mass Spectrometry in Changchun & Jilin Provincial Key Laboratory of Chinese Medicine Chemistry and Mass Spectrometry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130021, PR China
| | - Zhiqiang Liu
- National Center of Mass Spectrometry in Changchun & Jilin Provincial Key Laboratory of Chinese Medicine Chemistry and Mass Spectrometry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130021, PR China
| | - Zhongying Liu
- School of Pharmaceutical Sciences, Jilin University, Changchun 130021, PR China
| | - Lihui Men
- College of Basic Medical Sciences, Jilin University, Changchun 130021, PR China.
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3
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Kim SW, Kim CW, Moon YA, Kim HS. Reprogramming of tumor-associated macrophages by metabolites generated from tumor microenvironment. Anim Cells Syst (Seoul) 2024; 28:123-136. [PMID: 38577621 PMCID: PMC10993762 DOI: 10.1080/19768354.2024.2336249] [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: 01/25/2024] [Accepted: 03/17/2024] [Indexed: 04/06/2024] Open
Abstract
The tumor microenvironment comprises both tumor and non-tumor stromal cells, including tumor-associated macrophages (TAMs), endothelial cells, and carcinoma-associated fibroblasts. TAMs, major components of non-tumor stromal cells, play a crucial role in creating an immunosuppressive environment by releasing cytokines, chemokines, growth factors, and immune checkpoint proteins that inhibit T cell activity. During tumors develop, cancer cells release various mediators, including chemokines and metabolites, that recruit monocytes to infiltrate tumor tissues and subsequently induce an M2-like phenotype and tumor-promoting properties. Metabolites are often overlooked as metabolic waste or detoxification products but may contribute to TAM polarization. Furthermore, macrophages display a high degree of plasticity among immune cells in the tumor microenvironment, enabling them to either inhibit or facilitate cancer progression. Therefore, TAM-targeting has emerged as a promising strategy in tumor immunotherapy. This review provides an overview of multiple representative metabolites involved in TAM phenotypes, focusing on their role in pro-tumoral polarization of M2.
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Affiliation(s)
- Seung Woo Kim
- Department of Biomedical Sciences, College of Medicine, Inha University, Incheon, Republic of Korea
| | - Chan Woo Kim
- Cancer Immunotherapy Evaluation Team, Non-Clinical Evaluation Center, Osong Medical Innovation Foundation (KBIO Health), Cheongju, Republic of Korea
| | - Young-Ah Moon
- Department of Molecular Medicine, College of Medicine, Inha University, Incheon, Republic of Korea
| | - Hong Seok Kim
- Department of Molecular Medicine, College of Medicine, Inha University, Incheon, Republic of Korea
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4
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Zhang Y, Ye F, Fu X, Li S, Wang L, Chen Y, Li H, Hao S, Zhao K, Feng Q, Li P. Mitochondrial Regulation of Macrophages in Innate Immunity and Diverse Roles of Macrophages During Cochlear Inflammation. Neurosci Bull 2024; 40:255-267. [PMID: 37391607 PMCID: PMC10838870 DOI: 10.1007/s12264-023-01085-y] [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: 02/14/2023] [Accepted: 05/05/2023] [Indexed: 07/02/2023] Open
Abstract
Macrophages are essential components of the innate immune system and constitute a non-specific first line of host defense against pathogens and inflammation. Mitochondria regulate macrophage activation and innate immune responses in various inflammatory diseases, including cochlear inflammation. The distribution, number, and morphological characteristics of cochlear macrophages change significantly across different inner ear regions under various pathological conditions, including noise exposure, ototoxicity, and age-related degeneration. However, the exact mechanism underlying the role of mitochondria in macrophages in auditory function remains unclear. Here, we summarize the major factors and mitochondrial signaling pathways (e.g., metabolism, mitochondrial reactive oxygen species, mitochondrial DNA, and the inflammasome) that influence macrophage activation in the innate immune response. In particular, we focus on the properties of cochlear macrophages, activated signaling pathways, and the secretion of inflammatory cytokines after acoustic injury. We hope this review will provide new perspectives and a basis for future research on cochlear inflammation.
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Affiliation(s)
- Yuan Zhang
- Department of Otology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Fanglei Ye
- Department of Otology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Xiaolong Fu
- Shandong Provincial Hospital, Shandong First Medical University, Jinan, 250000, China
| | - Shen Li
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Le Wang
- Department of Otology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Yutian Chen
- The Department of Endovascular Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Hongmin Li
- Department of Otology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Shaojuan Hao
- Department of Otology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Kun Zhao
- Department of Otology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Qi Feng
- Department of Integrated Traditional and Western Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China.
- Henan Province Research Center of Kidney Disease, Zhengzhou, 450052, China.
| | - Peipei Li
- Department of Integrated Traditional and Western Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China.
- Henan Province Research Center of Kidney Disease, Zhengzhou, 450052, China.
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5
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Zhu J, Liu J, Yan C, Wang D, Pan W. Trained immunity: a cutting edge approach for designing novel vaccines against parasitic diseases? Front Immunol 2023; 14:1252554. [PMID: 37868995 PMCID: PMC10587610 DOI: 10.3389/fimmu.2023.1252554] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 09/25/2023] [Indexed: 10/24/2023] Open
Abstract
The preventive situation of parasitosis, a global public health burden especially for developing countries, is not looking that good. Similar to other infections, vaccines would be the best choice for preventing and controlling parasitic infection. However, ideal antigenic molecules for vaccine development have not been identified so far, resulting from the complicated life history and enormous genomes of the parasites. Furthermore, the suppression or down-regulation of anti-infectious immunity mediated by the parasites or their derived molecules can compromise the effect of parasitic vaccines. Comparing the early immune profiles of several parasites in the permissive and non-permissive hosts, a robust innate immune response is proposed to be a critical event to eliminate the parasites. Therefore, enhancing innate immunity may be essential for designing novel and effective parasitic vaccines. The newly emerging trained immunity (also termed innate immune memory) has been increasingly recognized to provide a novel perspective for vaccine development targeting innate immunity. This article reviews the current status of parasitic vaccines and anti-infectious immunity, as well as the conception, characteristics, and mechanisms of trained immunity and its research progress in Parasitology, highlighting the possible consideration of trained immunity in designing novel vaccines against parasitic diseases.
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Affiliation(s)
- Jinhang Zhu
- Jiangsu Key Laboratory of Immunity and Metabolism, Jiangsu International Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu, China
- The Second Clinical Medical College, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Jiaxi Liu
- Jiangsu Key Laboratory of Immunity and Metabolism, Jiangsu International Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Chao Yan
- Jiangsu Key Laboratory of Immunity and Metabolism, Jiangsu International Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Dahui Wang
- Liangshan College (Li Shui) China, Lishui University, Lishui, Zhejiang, China
| | - Wei Pan
- Jiangsu Key Laboratory of Immunity and Metabolism, Jiangsu International Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu, China
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Snyder GA, Kumar S, Lewis GK, Ray K. Two-photon fluorescence lifetime imaging microscopy of NADH metabolism in HIV-1 infected cells and tissues. Front Immunol 2023; 14:1213180. [PMID: 37662898 PMCID: PMC10468605 DOI: 10.3389/fimmu.2023.1213180] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 07/21/2023] [Indexed: 09/05/2023] Open
Abstract
Rapid detection of microbial-induced cellular changes during the course of an infection is critical to understanding pathogenesis and immunological homeostasis. In the last two decades, fluorescence imaging has received significant attention for its ability to help characterize microbial induced cellular and tissue changes in in vitro and in vivo settings. However, most of these methods rely on the covalent conjugation of large exogenous probes and detection methods based on intensity-based imaging. Here, we report a quantitative, intrinsic, label-free, and minimally invasive method based on two-photon fluorescence lifetime (FLT) imaging microscopy (2p-FLIM) for imaging 1,4-dihydro-nicotinamide adenine dinucleotide (NADH) metabolism of virally infected cells and tissue sections. To better understand virally induced cellular and tissue changes in metabolism we have used 2p-FLIM to study differences in NADH intensity and fluorescence lifetimes in HIV-1 infected cells and tissues. Differences in NADH fluorescence lifetimes are associated with cellular changes in metabolism and changes in cellular metabolism are associated with HIV-1 infection. NADH is a critical co-enzyme and redox regulator and an essential biomarker in the metabolic processes. Label-free 2p-FLIM application and detection of NADH fluorescence using viral infection systems are in their infancy. In this study, the application of the 2p-FLIM assay and quantitative analyses of HIV-1 infected cells and tissue sections reveal increased fluorescence lifetime and higher enzyme-bound NADH fraction suggesting oxidative phosphorylation (OxPhos) compared to uninfected cells and tissues. 2p-FLIM measurements improve signal to background, fluorescence specificity, provide spatial and temporal resolution of intracellular structures, and thus, are suitable for quantitative studies of cellular functions and tissue morphology. Furthermore, 2p-FLIM allows distinguishing free and bound populations of NADH by their different fluorescence lifetimes within single infected cells. Accordingly, NADH fluorescence measurements of individual single cells should provide necessary insight into the heterogeneity of metabolic activity of infected cells. Implementing 2p-FLIM to viral infection systems measuring NADH fluorescence at the single or subcellular level within a tissue can provide visual evidence, localization, and information in a real-time diagnostic or therapeutic metabolic workflow.
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Affiliation(s)
- Greg A. Snyder
- Division of Vaccine Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, United States
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Sameer Kumar
- Division of Vaccine Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - George K. Lewis
- Division of Vaccine Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, United States
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Krishanu Ray
- Division of Vaccine Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, United States
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD, United States
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7
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Iacobazzi D, Convertini P, Todisco S, Santarsiero A, Iacobazzi V, Infantino V. New Insights into NF-κB Signaling in Innate Immunity: Focus on Immunometabolic Crosstalks. BIOLOGY 2023; 12:776. [PMID: 37372061 DOI: 10.3390/biology12060776] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/23/2023] [Accepted: 05/24/2023] [Indexed: 06/29/2023]
Abstract
The nuclear factor kappa B (NF-κB) is a family of transcription factors that, beyond their numberless functions in various cell processes, play a pivotal role in regulating immune cell activation. Two main pathways-canonical and non-canonical-are responsible for NF-κB activation and heterodimer translocation into the nucleus. A complex crosstalk between NF-κB signaling and metabolism is emerging in innate immunity. Metabolic enzymes and metabolites regulate NF-κB activity in many cases through post-translational modifications such as acetylation and phosphorylation. On the other hand, NF-κB affects immunometabolic pathways, including the citrate pathway, thereby building an intricate network. In this review, the emerging findings about NF-κB function in innate immunity and the interplay between NF-κB and immunometabolism have been discussed. These outcomes allow for a deeper comprehension of the molecular mechanisms underlying NF-κB function in innate immune cells. Moreover, the new insights are important in order to perceive NF-κB signaling as a potential therapeutic target for inflammatory/immune chronic diseases.
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Affiliation(s)
- Dominga Iacobazzi
- Bristol Medical School, Translational Health Sciences, University of Bristol, Bristol BS2 8HW, UK
| | - Paolo Convertini
- Department of Science, University of Basilicata, Viale dell'Ateneo Lucano 10, 85100 Potenza, Italy
| | - Simona Todisco
- Department of Science, University of Basilicata, Viale dell'Ateneo Lucano 10, 85100 Potenza, Italy
| | - Anna Santarsiero
- Department of Science, University of Basilicata, Viale dell'Ateneo Lucano 10, 85100 Potenza, Italy
| | - Vito Iacobazzi
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, Via Orabona 4, 70125 Bari, Italy
| | - Vittoria Infantino
- Department of Science, University of Basilicata, Viale dell'Ateneo Lucano 10, 85100 Potenza, Italy
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8
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Zara V, Assalve G, Ferramosca A. Insights into the malfunctioning of the mitochondrial citrate carrier: Implications for cell pathology. Biochim Biophys Acta Mol Basis Dis 2023; 1869:166758. [PMID: 37209873 DOI: 10.1016/j.bbadis.2023.166758] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 05/08/2023] [Accepted: 05/12/2023] [Indexed: 05/22/2023]
Abstract
The mitochondrial citrate carrier (CIC) is a member of the mitochondrial carrier family and is responsible for the transit of tricarboxylates and dicarboxylates across the inner membrane. By modulating the flux of these molecules, it represents the molecular link between catabolic and anabolic reactions that take place in distinct cellular sub-compartments. Therefore, this transport protein represents an important element of investigation both in physiology and in pathology. In this review we critically analyze the involvement of the mitochondrial CIC in several human pathologies, which can be divided into two subgroups, one characterized by a decrease and the other by an increase in the flux of citrate across the inner mitochondrial membrane. In particular, a decrease in the activity of the mitochondrial CIC is responsible for several congenital diseases of different severity, which are also characterized by the increase in urinary levels of L-2- and D-2-hydroxyglutaric acids. On the other hand, an increase in the activity of the mitochondrial CIC is involved, in various ways, in the onset of inflammation, autoimmune diseases, and cancer. Then, understanding the role of CIC and the mechanisms driving the flux of metabolic intermediates between mitochondria and cytosol would potentially allow for manipulation and control of metabolism in pathological conditions.
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Affiliation(s)
- Vincenzo Zara
- Department of Biological and Environmental Sciences and Technologies, University of Salento, I-73100 Lecce, Italy
| | - Graziana Assalve
- Department of Biological and Environmental Sciences and Technologies, University of Salento, I-73100 Lecce, Italy
| | - Alessandra Ferramosca
- Department of Biological and Environmental Sciences and Technologies, University of Salento, I-73100 Lecce, Italy.
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9
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1,2- 13C 2-Glucose Tracing Approach to Assess Metabolic Alterations of Human Monocytes under Neuroinflammatory Conditions. Curr Issues Mol Biol 2023; 45:765-781. [PMID: 36661537 PMCID: PMC9857935 DOI: 10.3390/cimb45010051] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/05/2023] [Accepted: 01/08/2023] [Indexed: 01/17/2023] Open
Abstract
Neuroinflammation is one of the common features in most neurological diseases including multiple sclerosis (MScl) and neurodegenerative diseases such as Alzheimer's disease (AD). It is associated with local brain inflammation, microglial activation, and infiltration of peripheral immune cells into cerebrospinal fluid (CSF) and the central nervous system (CNS). It has been shown that the diversity of phenotypic changes in monocytes in CSF relates to neuroinflammation. It remains to be investigated whether these phenotypic changes are associated with functional or metabolic alteration, which may give a hint to their function or changes in cell states, e.g., cell activation. In this article, we investigate whether major metabolic pathways of blood monocytes alter after exposure to CSF of healthy individuals or patients with AD or MScl. Our findings show a significant alteration of the metabolism of monocytes treated with CSF from patients and healthy donors, including higher production of citric acid and glutamine, suggesting a more active glycolysis and tricarboxylic acid (TCA) cycle and reduced production of glycine and serine. These alterations suggest metabolic reprogramming of monocytes, possibly related to the change of compartment (from blood to CSF) and/or disease-related. Moreover, the levels of serine differ between AD and MScl, suggesting different phenotypic alterations between diseases.
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10
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Gupta S, Sarangi PP. Inflammation driven metabolic regulation and adaptation in macrophages. Clin Immunol 2023; 246:109216. [PMID: 36572212 DOI: 10.1016/j.clim.2022.109216] [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: 10/09/2022] [Revised: 12/01/2022] [Accepted: 12/22/2022] [Indexed: 12/25/2022]
Abstract
Macrophages are a diverse population of phagocytic immune cells involved in the host defense mechanisms and regulation of homeostasis. Usually, macrophages maintain healthy functioning at the cellular level, but external perturbation in their balanced functions can lead to acute and chronic disease conditions. By sensing the cues from the tissue microenvironment, these phagocytes adopt a plethora of phenotypes, such as inflammatory or M1 to anti-inflammatory (immunosuppressive) or M2 subtypes, to fulfill their spectral range of functions. The existing evidence in the literature supports that in macrophages, regulation of metabolic switches and metabolic adaptations are associated with their functional behaviors under various physiological and pathological conditions. Since these macrophages play a crucial role in many disorders, therefore it is necessary to understand their heterogeneity and metabolic reprogramming. Consequently, these macrophages have also emerged as a promising target for diseases in which their role is crucial in driving the disease pathology and outcome (e.g., Cancers). In this review, we discuss the recent findings that link many metabolites with macrophage functions and highlight how this metabolic reprogramming can improve our understanding of cellular malfunction in the macrophages during inflammatory disorders. A systematic analysis of the interconnecting crosstalk between metabolic pathways with macrophages should inform the selection of immunomodulatory therapies for inflammatory diseases.
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Affiliation(s)
- Saloni Gupta
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India
| | - Pranita P Sarangi
- Department of Biosciences and Bioengineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India.
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11
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Yang HH, Jiang HL, Tao JH, Zhang CY, Xiong JB, Yang JT, Liu YB, Zhong WJ, Guan XX, Duan JX, Zhang YF, Liu SK, Jiang JX, Zhou Y, Guan CX. Mitochondrial citrate accumulation drives alveolar epithelial cell necroptosis in lipopolysaccharide-induced acute lung injury. Exp Mol Med 2022; 54:2077-2091. [PMID: 36443565 PMCID: PMC9722936 DOI: 10.1038/s12276-022-00889-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 09/09/2022] [Accepted: 09/14/2022] [Indexed: 11/29/2022] Open
Abstract
Necroptosis is the major cause of death in alveolar epithelial cells (AECs) during acute lung injury (ALI). Here, we report a previously unrecognized mechanism for necroptosis. We found an accumulation of mitochondrial citrate (citratemt) in lipopolysaccharide (LPS)-treated AECs because of the downregulation of Idh3α and citrate carrier (CIC, also known as Slc25a1). shRNA- or inhibitor-mediated inhibition of Idh3α and Slc25a1 induced citratemt accumulation and necroptosis in vitro. Mice with AEC-specific Idh3α and Slc25a1 deficiency exhibited exacerbated lung injury and AEC necroptosis. Interestingly, the overexpression of Idh3α and Slc25a1 decreased citratemt levels and rescued AECs from necroptosis. Mechanistically, citratemt accumulation induced mitochondrial fission and excessive mitophagy in AECs. Furthermore, citratemt directly interacted with FUN14 domain-containing protein 1 (FUNDC1) and promoted the interaction of FUNDC1 with dynamin-related protein 1 (DRP1), leading to excessive mitophagy-mediated necroptosis and thereby initiating and promoting ALI. Importantly, necroptosis induced by citratemt accumulation was inhibited in FUNDC1-knockout AECs. We show that citratemt accumulation is a novel target for protection against ALI involving necroptosis.
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Affiliation(s)
- Hui-Hui Yang
- grid.216417.70000 0001 0379 7164Department of Physiology, School of Basic Medical Science, Central South University, Changsha, Hunan China
| | - Hui-Ling Jiang
- grid.216417.70000 0001 0379 7164Department of Physiology, School of Basic Medical Science, Central South University, Changsha, Hunan China
| | - Jia-Hao Tao
- grid.216417.70000 0001 0379 7164Department of Physiology, School of Basic Medical Science, Central South University, Changsha, Hunan China
| | - Chen-Yu Zhang
- grid.216417.70000 0001 0379 7164Department of Physiology, School of Basic Medical Science, Central South University, Changsha, Hunan China
| | - Jian-Bing Xiong
- grid.216417.70000 0001 0379 7164Department of Physiology, School of Basic Medical Science, Central South University, Changsha, Hunan China
| | - Jin-Tong Yang
- grid.216417.70000 0001 0379 7164Department of Physiology, School of Basic Medical Science, Central South University, Changsha, Hunan China
| | - Yu-Biao Liu
- grid.216417.70000 0001 0379 7164Department of Physiology, School of Basic Medical Science, Central South University, Changsha, Hunan China
| | - Wen-Jing Zhong
- grid.216417.70000 0001 0379 7164Department of Physiology, School of Basic Medical Science, Central South University, Changsha, Hunan China
| | - Xin-Xin Guan
- grid.216417.70000 0001 0379 7164Department of Physiology, School of Basic Medical Science, Central South University, Changsha, Hunan China
| | - Jia-Xi Duan
- grid.216417.70000 0001 0379 7164Department of Geriatrics, Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, Hunan China
| | - Yan-Feng Zhang
- grid.216417.70000 0001 0379 7164Department of Cardiovascular Surgery, Xiangya Hospital, Central South University, Changsha, Hunan China
| | - Shao-Kun Liu
- grid.216417.70000 0001 0379 7164Department of Pulmonary and Critical Care Medicine, the Second Xiangya Hospital, Central South University, Changsha, Hunan China
| | - Jian-Xin Jiang
- grid.410570.70000 0004 1760 6682State Key Laboratory of Trauma, Burns, and Combined Injury, Department of Trauma Medical Center, Daping Hospital, Army Medical University, Chongqing, China
| | - Yong Zhou
- grid.216417.70000 0001 0379 7164Department of Physiology, School of Basic Medical Science, Central South University, Changsha, Hunan China
| | - Cha-Xiang Guan
- grid.216417.70000 0001 0379 7164Department of Physiology, School of Basic Medical Science, Central South University, Changsha, Hunan China
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12
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Shi X, Zhou H, Wei J, Mo W, Li Q, Lv X. The signaling pathways and therapeutic potential of itaconate to alleviate inflammation and oxidative stress in inflammatory diseases. Redox Biol 2022; 58:102553. [PMID: 36459716 PMCID: PMC9713374 DOI: 10.1016/j.redox.2022.102553] [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: 10/26/2022] [Revised: 11/19/2022] [Accepted: 11/22/2022] [Indexed: 11/25/2022] Open
Abstract
Endogenous small molecules are metabolic regulators of cell function. Itaconate is a key molecule that accumulates in cells when the Krebs cycle is disrupted. Itaconate is derived from cis-aconitate decarboxylation by cis-aconitate decarboxylase (ACOD1) in the mitochondrial matrix and is also known as immune-responsive gene 1 (IRG1). Studies have demonstrated that itaconate plays an important role in regulating signal transduction and posttranslational modification through its immunoregulatory activities. Itaconate is also an important bridge among metabolism, inflammation, oxidative stress, and the immune response. This review summarizes the structural characteristics and classical pathways of itaconate, its derivatives, and the compounds that release itaconate. Here, the mechanisms of itaconate action, including its transcriptional regulation of ATF3/IκBζ axis and type I IFN, its protein modification regulation of KEAP1, inflammasome, JAK1/STAT6 pathway, TET2, and TFEB, and succinate dehydrogenase and glycolytic enzyme metabolic action, are presented. Moreover, the roles of itaconate in diseases related to inflammation and oxidative stress induced by autoimmune responses, viruses, sepsis and IRI are discussed in this review. We hope that the information provided in this review will help increase the understanding of cellular immune metabolism and improve the clinical treatment of diseases related to inflammation and oxidative stress.
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13
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Li YH, Hsu DZ, Liu CT, Chandrasekaran VRM, Liu MY. The protective effect of muscimol against systemic inflammatory response in endotoxemic mice is independent of GABAergic and cholinergic receptors. Can J Physiol Pharmacol 2022; 100:665-678. [PMID: 35856422 DOI: 10.1139/cjpp-2021-0682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Systemic inflammatory response syndrome plays an important role in the development of sepsis. GABAergic and cholinergic pathways activation are considered important for inflammatory response regulation. Tumor necrosis factor (TNF)-α, interleukin (IL)-1β, IL-12, IL-10, as well as inducible nitric oxide synthase (iNOS)-derived nitric oxide (NO) are important inflammatory mediators involved in the pathogenesis of sepsis. Muscimol, an active compound from the mushroom Amanita muscaria (L.) Lam., is a potent GABAA agonist, inhibits inflammatory response via activating GABAA receptor and vagus nerve. However, the effect of muscimol on lipopolysaccharide (LPS)-induced systemic inflammatory response is still unclear. Therefore, we studied the effects of muscimol on systemic inflammatory response and survival rate in endotoxemic mice. Mice endotoxemia was induced by LPS. Muscimol was given to mice or RAW264.7 cells 30 min before LPS (10 mg/kg, i.p., or 10 ng/mL, respectively). Mice received GABAergic and cholinergic receptor antagonists 30 min before muscimol and LPS. Muscimol decreased TNF-α, IL-1β, IL-12, iNOS-derived NO, and increased IL-10 levels and survival rate after LPS treatment. Muscimol significantly decreased nuclear factor kappa B (NF-κB) activity, increased IκB expression, and decreased pIKK expression in LPS-treated RAW264.7 cells. GABAergic and cholinergic antagonists failed to reverse muscimol's protection in LPS-treated mice. In conclusion, muscimol protected against systemic inflammatory response in endotoxemic mice may be partially independent of GABAergic and cholinergic receptors.
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Affiliation(s)
- Ya-Hui Li
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan
| | - Dur-Zong Hsu
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan
| | - Chuan-Teng Liu
- Research Center for Traditional Chinese Medicine, China Medical University Hospital, Taichung 40447, Taiwan
| | - Victor Raj Mohan Chandrasekaran
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan
| | - Ming-Yie Liu
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan
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14
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Monga S, Fares B, Yashaev R, Melamed D, Kahana M, Fares F, Weizman A, Gavish M. The Effect of Natural-Based Formulation (NBF) on the Response of RAW264.7 Macrophages to LPS as an In Vitro Model of Inflammation. J Fungi (Basel) 2022; 8:jof8030321. [PMID: 35330323 PMCID: PMC8955716 DOI: 10.3390/jof8030321] [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: 02/15/2022] [Revised: 03/14/2022] [Accepted: 03/15/2022] [Indexed: 12/12/2022] Open
Abstract
Macrophages are some of the most important immune cells in the organism and are responsible for creating an inflammatory immune response in order to inhibit the passage of microscopic foreign bodies into the blood stream. Sometimes, their activation can be responsible for chronic inflammatory diseases such as asthma, tuberculosis, hepatitis, sinusitis, inflammatory bowel disease, and viral infections. Prolonged inflammation can damage the organs or may lead to death in serious conditions. In the present study, RAW264.7 macrophages were exposed to lipopolysaccharide (LPS; 20 ng/mL) and simultaneously treated with 20 µg/mL of natural-based formulation (NBF), mushroom–cannabidiol extract). Pro-inflammatory cytokines, chemokines, and other inflammatory markers were analyzed. The elevations in the presence of interleukin-6 (IL-6), cycloxygenase-2 (COX-2), C-C motif ligand-5 (CCL5), and nitrite response, following exposure to LPS, were completely inhibited by NBF administration. IL-1β and tumor necrosis factor alpha (TNF-α) release were inhibited by 3.9-fold and 1.5-fold, respectively. No toxic effect of NBF, as assessed by lactate dehydrogenase (LDH) release, was observed. Treatment of the cells with NBF significantly increased the mRNA levels of TLR2, and TLR4, but not NF-κB. Thus, it appears that the NBF possesses anti-inflammatory and immunomodulatory effects which can attenuate the release of pro-inflammatory markers. NBF may be a candidate for the treatment of acute and chronic inflammatory diseases and deserves further investigation.
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Affiliation(s)
- Sheelu Monga
- Department of Human Biology, Faculty of Natural Sciences, University of Haifa, Haifa 3498838, Israel; (S.M.); (F.F.)
- Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 3200003, Israel; (R.Y.); (M.K.)
| | - Basem Fares
- Cannabotech Ltd., 3 Arik Einstein St., Herzliya 4659071, Israel; (B.F.); (D.M.)
| | - Rami Yashaev
- Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 3200003, Israel; (R.Y.); (M.K.)
| | - Dov Melamed
- Cannabotech Ltd., 3 Arik Einstein St., Herzliya 4659071, Israel; (B.F.); (D.M.)
| | - Meygal Kahana
- Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 3200003, Israel; (R.Y.); (M.K.)
| | - Fuad Fares
- Department of Human Biology, Faculty of Natural Sciences, University of Haifa, Haifa 3498838, Israel; (S.M.); (F.F.)
| | - Abraham Weizman
- Sackler Faculty of Medicine, Felsenstein Medical Research Center, Tel Aviv University, Tel Aviv 6997801, Israel;
- Research Unit, Geha Mental Health Center, Petah Tikva 4910002, Israel
| | - Moshe Gavish
- Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 3200003, Israel; (R.Y.); (M.K.)
- Correspondence:
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15
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Functionally Heterogenous Macrophage Subsets in the Pathogenesis of Giant Cell Arteritis: Novel Targets for Disease Monitoring and Treatment. J Clin Med 2021; 10:jcm10214958. [PMID: 34768479 PMCID: PMC8585092 DOI: 10.3390/jcm10214958] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 10/20/2021] [Accepted: 10/23/2021] [Indexed: 12/19/2022] Open
Abstract
Giant cell arteritis (GCA) is a granulomatous large-vessel vasculitis that affects adults above 50 years of age. In GCA, circulating monocytes are recruited to the inflamed arteries. With cues from the vascular microenvironment, they differentiate into macrophages and play important roles in the pathogenesis of GCA via pro-inflammatory cytokine production and vascular remodeling. However, a deeper understanding of macrophage heterogeneity in GCA pathogenesis is needed to assist the development of novel diagnostic tools and targeted therapies. Here, we review the current knowledge on macrophage heterogeneity and diverse functions of macrophage subsets in the pathogenesis of GCA. We next discuss the possibility to exploit their heterogeneity as a source of novel biomarkers and as targets for nuclear imaging. Finally, we discuss novel macrophage-targeted therapies and future directions for targeting these cells in GCA.
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16
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Ma L, Li W, Zhang Y, Qi L, Zhao Q, Li N, Lu Y, Zhang L, Zhou F, Wu Y, He Y, Yu H, He Y, Wei B, Wang H. FLT4/VEGFR3 activates AMPK to coordinate glycometabolic reprogramming with autophagy and inflammasome activation for bacterial elimination. Autophagy 2021; 18:1385-1400. [PMID: 34632918 DOI: 10.1080/15548627.2021.1985338] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
Macrophages rapidly undergo glycolytic reprogramming in response to macroautophagy/autophagy, inflammasome activation and pyroptosis for the clearance of bacteria. Identification the key molecules involved in these three events will provide critical potential therapeutic applications. Upon S. typhimurium infection, FLT4/VEGFR3 and its ligand VEGFC were inducibly expressed in macrophages, and FLT4 signaling inhibited CASP1 (caspase 1)-dependent inflammasome activation and pyroptosis but enhanced MAP1LC3/LC3 activation for elimination of the bacteria. Consistently, FLT4 mutants lacking the extracellular ligand-binding domain increased production of the proinflammatory metabolites such as succinate and lactate, and reduced antimicrobial metabolites including citrate and NAD(P)H in macrophages and liver upon infection. Mechanistically, FLT4 recruited AMP-activated protein kinase (AMPK) and phosphorylated Y247 and Y441/442 in the PRKAA/alpha subunit for AMPK activation. The AMPK agonist AICAR could rescue glycolytic reprogramming and inflammasome activation in macrophages expressing the mutant FLT4, which has potential translational application in patients carrying Flt4 mutations to prevent recurrent infections. Collectively, we have elucidated that the FLT4-AMPK module in macrophages coordinates glycolytic reprogramming, autophagy, inflammasome activation and pyroptosis to eliminate invading bacteria.
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Affiliation(s)
- Li Ma
- State Key Laboratory of Cell Biology, Cas Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Weiyun Li
- State Key Laboratory of Cell Biology, Cas Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China.,School of Life Sciences, Xiamen University, Xiamen, Fujian Province, China
| | - Yanbo Zhang
- State Key Laboratory of Cell Biology, Cas Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China.,Department of Immunology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
| | - Linlin Qi
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
| | - Qi Zhao
- School of Life Sciences, Shanghai University, Shanghai, China
| | - Na Li
- State Key Laboratory of Cell Biology, Cas Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Yao Lu
- State Key Laboratory of Cell Biology, Cas Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Luqing Zhang
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Protection, Cam-Su Genomic Resources Center, Soochow University, Suzhou, China
| | - Fei Zhou
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Protection, Cam-Su Genomic Resources Center, Soochow University, Suzhou, China
| | - Yichun Wu
- State Key Laboratory of Molecular Biology, National Center for Protein Science Shanghai, Shanghai Science Research Center, Shanghai Key Laboratory of Molecular Andrology, Cas Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Yongning He
- State Key Laboratory of Molecular Biology, National Center for Protein Science Shanghai, Shanghai Science Research Center, Shanghai Key Laboratory of Molecular Andrology, Cas Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Hongxiu Yu
- Institutes of Biomedical Science, Fudan University, Shanghai, China
| | - Yulong He
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Protection, Cam-Su Genomic Resources Center, Soochow University, Suzhou, China
| | - Bin Wei
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China.,School of Life Sciences, Shanghai University, Shanghai, China.,School of Medicine, Cancer Center, Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Hongyan Wang
- State Key Laboratory of Cell Biology, Cas Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China.,School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China.,Bio-Research Innovation Center Suzhou, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Suzhou, Jiangsu, China
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17
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Marrocco A, Frawley K, Pearce LL, Peterson J, O'Brien JP, Mullett SJ, Wendell SG, St Croix CM, Mischler SE, Ortiz LA. Metabolic Adaptation of Macrophages as Mechanism of Defense against Crystalline Silica. THE JOURNAL OF IMMUNOLOGY 2021; 207:1627-1640. [PMID: 34433619 DOI: 10.4049/jimmunol.2000628] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 07/08/2021] [Indexed: 11/19/2022]
Abstract
Silicosis is a lethal pneumoconiosis for which no therapy is available. Silicosis is a global threat, and more than 2.2 million people per year are exposed to silica in the United States. The initial response to silica is mediated by innate immunity. Phagocytosis of silica particles by macrophages is followed by recruitment of mitochondria to phagosomes, generation of mitochondrial reactive oxygen species, and cytokine (IL-1β, TNF-α, IFN-β) release. In contrast with LPS, the metabolic remodeling of silica-exposed macrophages is unclear. This study contrasts mitochondrial and metabolic alterations induced by LPS and silica on macrophages and correlates them with macrophage viability and cytokine production, which are central to the pathogenesis of silicosis. Using high-resolution respirometer and liquid chromatography-high-resolution mass spectrometry, we determined the effects of silica and LPS on mitochondrial respiration and determined changes in central carbon metabolism of murine macrophage cell lines RAW 264.7 and IC-21. We show that silica induces metabolic reprogramming of macrophages. Silica, as well as LPS, enhances glucose uptake and increases aerobic glycolysis in macrophages. In contrast with LPS, silica affects mitochondria respiration, reducing complex I and enhancing complex II activity, to sustain cell viability. These mitochondrial alterations are associated in silica, but not in LPS-exposed macrophages, with reductions of tricarboxylic acid cycle intermediates, including succinate, itaconate, glutamate, and glutamine. Furthermore, in contrast with LPS, these silica-induced metabolic adaptations do not correlate with IL-1β or TNF-α production, but with the suppressed release of IFN-β. Our data highlight the importance of complex II activity and tricarboxylic acid cycle remodeling to macrophage survival and cytokine-mediated inflammation in silicosis.
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Affiliation(s)
- Antonella Marrocco
- Department of Environmental and Occupational Health, Graduate School of Public Health at the University of Pittsburgh, Pittsburgh, PA
| | - Krystin Frawley
- Department of Environmental and Occupational Health, Graduate School of Public Health at the University of Pittsburgh, Pittsburgh, PA
| | - Linda L Pearce
- Department of Environmental and Occupational Health, Graduate School of Public Health at the University of Pittsburgh, Pittsburgh, PA
| | - James Peterson
- Department of Environmental and Occupational Health, Graduate School of Public Health at the University of Pittsburgh, Pittsburgh, PA
| | - James P O'Brien
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA
| | - Steven J Mullett
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA.,Health Sciences Metabolomics and Lipidomics Core, University of Pittsburgh, Pittsburgh, PA
| | - Stacy G Wendell
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA.,Health Sciences Metabolomics and Lipidomics Core, University of Pittsburgh, Pittsburgh, PA.,Clinical Translational Science Institute, University of Pittsburgh, Pittsburgh, PA; and
| | | | - Steven E Mischler
- Department of Environmental and Occupational Health, Graduate School of Public Health at the University of Pittsburgh, Pittsburgh, PA
| | - Luis A Ortiz
- Department of Environmental and Occupational Health, Graduate School of Public Health at the University of Pittsburgh, Pittsburgh, PA;
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18
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Wang Y, Li N, Zhang X, Horng T. Mitochondrial metabolism regulates macrophage biology. J Biol Chem 2021; 297:100904. [PMID: 34157289 PMCID: PMC8294576 DOI: 10.1016/j.jbc.2021.100904] [Citation(s) in RCA: 98] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 06/16/2021] [Accepted: 06/18/2021] [Indexed: 01/24/2023] Open
Abstract
Mitochondria are critical for regulation of the activation, differentiation, and survival of macrophages and other immune cells. In response to various extracellular signals, such as microbial or viral infection, changes to mitochondrial metabolism and physiology could underlie the corresponding state of macrophage activation. These changes include alterations of oxidative metabolism, mitochondrial membrane potential, and tricarboxylic acid (TCA) cycling, as well as the release of mitochondrial reactive oxygen species (mtROS) and mitochondrial DNA (mtDNA) and transformation of the mitochondrial ultrastructure. Here, we provide an updated review of how changes in mitochondrial metabolism and various metabolites such as fumarate, succinate, and itaconate coordinate to guide macrophage activation to distinct cellular states, thus clarifying the vital link between mitochondria metabolism and immunity. We also discuss how in disease settings, mitochondrial dysfunction and oxidative stress contribute to dysregulation of the inflammatory response. Therefore, mitochondria are a vital source of dynamic signals that regulate macrophage biology to fine-tune immune responses.
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Affiliation(s)
- Yafang Wang
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China.
| | - Na Li
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Xin Zhang
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Tiffany Horng
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China.
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19
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Luque-Campos N, Bustamante-Barrientos FA, Pradenas C, García C, Araya MJ, Bohaud C, Contreras-López R, Elizondo-Vega R, Djouad F, Luz-Crawford P, Vega-Letter AM. The Macrophage Response Is Driven by Mesenchymal Stem Cell-Mediated Metabolic Reprogramming. Front Immunol 2021; 12:624746. [PMID: 34149687 PMCID: PMC8213396 DOI: 10.3389/fimmu.2021.624746] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Accepted: 05/13/2021] [Indexed: 12/17/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are multipotent adult stromal cells widely studied for their regenerative and immunomodulatory properties. They are capable of modulating macrophage plasticity depending on various microenvironmental signals. Current studies have shown that metabolic changes can also affect macrophage fate and function. Indeed, changes in the environment prompt phenotype change. Therefore, in this review, we will discuss how MSCs orchestrate macrophage’s metabolic plasticity and the impact on their function. An improved understanding of the crosstalk between macrophages and MSCs will improve our knowledge of MSC’s therapeutic potential in the context of inflammatory diseases, cancer, and tissue repair processes in which macrophages are pivotal.
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Affiliation(s)
- Noymar Luque-Campos
- Laboratorio de Inmunología Celular y Molecular, Facultad de Medicina, Universidad de los Andes, Santiago, Chile.,Centro de Investigación e Innovación Biomédica, Universidad de los Andes, Santiago, Chile.,Programa de Doctorado en Biomedicina, Facultad de Medicina, Universidad de los Andes, Santiago, Chile
| | - Felipe A Bustamante-Barrientos
- Laboratorio de Inmunología Celular y Molecular, Facultad de Medicina, Universidad de los Andes, Santiago, Chile.,Centro de Investigación e Innovación Biomédica, Universidad de los Andes, Santiago, Chile
| | - Carolina Pradenas
- Laboratorio de Inmunología Celular y Molecular, Facultad de Medicina, Universidad de los Andes, Santiago, Chile.,Centro de Investigación e Innovación Biomédica, Universidad de los Andes, Santiago, Chile.,Facultad de Ciencias, Universidad de Chile, Santiago, Chile
| | - Cynthia García
- Laboratorio de Inmunología Celular y Molecular, Facultad de Medicina, Universidad de los Andes, Santiago, Chile.,Centro de Investigación e Innovación Biomédica, Universidad de los Andes, Santiago, Chile.,Escuela de Biotecnología, Facultad de Ciencias, Universidad Mayor, Santiago, Chile
| | - María Jesús Araya
- Laboratorio de Inmunología Celular y Molecular, Facultad de Medicina, Universidad de los Andes, Santiago, Chile.,Centro de Investigación e Innovación Biomédica, Universidad de los Andes, Santiago, Chile.,Escuela de Biotecnología, Facultad de Ciencias, Universidad Mayor, Santiago, Chile
| | | | | | - Roberto Elizondo-Vega
- Laboratorio de Biología Celular, Departamento de Biología Celular, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| | | | - Patricia Luz-Crawford
- Laboratorio de Inmunología Celular y Molecular, Facultad de Medicina, Universidad de los Andes, Santiago, Chile.,Centro de Investigación e Innovación Biomédica, Universidad de los Andes, Santiago, Chile
| | - Ana María Vega-Letter
- Centro de Investigación e Innovación Biomédica, Universidad de los Andes, Santiago, Chile.,Cells for Cells, Regenero, Las Condes, Santiago, Chile.,Laboratory of Nano-Regenerative Medicine, Facultad de Medicina, Universidad de los Andes, Santiago, Chile
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20
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Decano JL, Singh SA, Gasparotto Bueno C, Ho Lee L, Halu A, Chelvanambi S, Matamalas JT, Zhang H, Mlynarchik AK, Qiao J, Sharma A, Mukai S, Wang J, Anderson DG, Ozaki CK, Libby P, Aikawa E, Aikawa M. Systems Approach to Discovery of Therapeutic Targets for Vein Graft Disease: PPARα Pivotally Regulates Metabolism, Activation, and Heterogeneity of Macrophages and Lesion Development. Circulation 2021; 143:2454-2470. [PMID: 33821665 PMCID: PMC8212880 DOI: 10.1161/circulationaha.119.043724] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Supplemental Digital Content is available in the text. Vein graft failure remains a common clinical challenge. We applied a systems approach in mouse experiments to discover therapeutic targets for vein graft failure.
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Affiliation(s)
- Julius L Decano
- Center for Interdisciplinary Cardiovascular Sciences, Cardiovascular Division (J.L.D., S.A.S., C.G.B., L.H.L., A.H., S.C., J.T.M., H.Z., A.K.M., J.Q., A.S., S.M., J.W., E.A., M.A.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Sasha A Singh
- Center for Interdisciplinary Cardiovascular Sciences, Cardiovascular Division (J.L.D., S.A.S., C.G.B., L.H.L., A.H., S.C., J.T.M., H.Z., A.K.M., J.Q., A.S., S.M., J.W., E.A., M.A.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Cauê Gasparotto Bueno
- Center for Interdisciplinary Cardiovascular Sciences, Cardiovascular Division (J.L.D., S.A.S., C.G.B., L.H.L., A.H., S.C., J.T.M., H.Z., A.K.M., J.Q., A.S., S.M., J.W., E.A., M.A.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Lang Ho Lee
- Center for Interdisciplinary Cardiovascular Sciences, Cardiovascular Division (J.L.D., S.A.S., C.G.B., L.H.L., A.H., S.C., J.T.M., H.Z., A.K.M., J.Q., A.S., S.M., J.W., E.A., M.A.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Arda Halu
- Center for Interdisciplinary Cardiovascular Sciences, Cardiovascular Division (J.L.D., S.A.S., C.G.B., L.H.L., A.H., S.C., J.T.M., H.Z., A.K.M., J.Q., A.S., S.M., J.W., E.A., M.A.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA.,Channing Division of Network Medicine (A.H., A.S., M.A.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Sarvesh Chelvanambi
- Center for Interdisciplinary Cardiovascular Sciences, Cardiovascular Division (J.L.D., S.A.S., C.G.B., L.H.L., A.H., S.C., J.T.M., H.Z., A.K.M., J.Q., A.S., S.M., J.W., E.A., M.A.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Joan T Matamalas
- Center for Interdisciplinary Cardiovascular Sciences, Cardiovascular Division (J.L.D., S.A.S., C.G.B., L.H.L., A.H., S.C., J.T.M., H.Z., A.K.M., J.Q., A.S., S.M., J.W., E.A., M.A.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Hengmin Zhang
- Center for Interdisciplinary Cardiovascular Sciences, Cardiovascular Division (J.L.D., S.A.S., C.G.B., L.H.L., A.H., S.C., J.T.M., H.Z., A.K.M., J.Q., A.S., S.M., J.W., E.A., M.A.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Andrew K Mlynarchik
- Center for Interdisciplinary Cardiovascular Sciences, Cardiovascular Division (J.L.D., S.A.S., C.G.B., L.H.L., A.H., S.C., J.T.M., H.Z., A.K.M., J.Q., A.S., S.M., J.W., E.A., M.A.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Jiao Qiao
- Center for Interdisciplinary Cardiovascular Sciences, Cardiovascular Division (J.L.D., S.A.S., C.G.B., L.H.L., A.H., S.C., J.T.M., H.Z., A.K.M., J.Q., A.S., S.M., J.W., E.A., M.A.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Amitabh Sharma
- Center for Interdisciplinary Cardiovascular Sciences, Cardiovascular Division (J.L.D., S.A.S., C.G.B., L.H.L., A.H., S.C., J.T.M., H.Z., A.K.M., J.Q., A.S., S.M., J.W., E.A., M.A.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA.,Channing Division of Network Medicine (A.H., A.S., M.A.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Shin Mukai
- Center for Interdisciplinary Cardiovascular Sciences, Cardiovascular Division (J.L.D., S.A.S., C.G.B., L.H.L., A.H., S.C., J.T.M., H.Z., A.K.M., J.Q., A.S., S.M., J.W., E.A., M.A.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Jianguo Wang
- Center for Interdisciplinary Cardiovascular Sciences, Cardiovascular Division (J.L.D., S.A.S., C.G.B., L.H.L., A.H., S.C., J.T.M., H.Z., A.K.M., J.Q., A.S., S.M., J.W., E.A., M.A.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Daniel G Anderson
- Institutes for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge (D.G.A.)
| | - C Keith Ozaki
- Department of Medicine, Division of Vascular and Endovascular Surgery, Department of Surgery (C.K.O.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Peter Libby
- Center for Excellence in Vascular Biology (P.L., E.A., M.A.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Elena Aikawa
- Center for Interdisciplinary Cardiovascular Sciences, Cardiovascular Division (J.L.D., S.A.S., C.G.B., L.H.L., A.H., S.C., J.T.M., H.Z., A.K.M., J.Q., A.S., S.M., J.W., E.A., M.A.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA.,Center for Excellence in Vascular Biology (P.L., E.A., M.A.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA.,Department of Human Pathology, I.M. Sechenov First Moscow State Medical University of the Ministry of Health, Russia (E.A., M.A.)
| | - Masanori Aikawa
- Center for Interdisciplinary Cardiovascular Sciences, Cardiovascular Division (J.L.D., S.A.S., C.G.B., L.H.L., A.H., S.C., J.T.M., H.Z., A.K.M., J.Q., A.S., S.M., J.W., E.A., M.A.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA.,Channing Division of Network Medicine (A.H., A.S., M.A.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA.,Center for Excellence in Vascular Biology (P.L., E.A., M.A.), Brigham and Women's Hospital, Harvard Medical School, Boston, MA.,Department of Human Pathology, I.M. Sechenov First Moscow State Medical University of the Ministry of Health, Russia (E.A., M.A.)
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21
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Li M, Riddle S, Kumar S, Poczobutt J, McKeon BA, Frid MG, Ostaff M, Reisz JA, Nemkov T, Fini MA, Laux A, Hu CJ, El Kasmi KC, D’Alessandro A, Brown RD, Zhang H, Stenmark KR. Microenvironmental Regulation of Macrophage Transcriptomic and Metabolomic Profiles in Pulmonary Hypertension. Front Immunol 2021; 12:640718. [PMID: 33868271 PMCID: PMC8044406 DOI: 10.3389/fimmu.2021.640718] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 03/11/2021] [Indexed: 12/24/2022] Open
Abstract
The recruitment and subsequent polarization of inflammatory monocytes/macrophages in the perivascular regions of pulmonary arteries is a key feature of pulmonary hypertension (PH). However, the mechanisms driving macrophage polarization within the adventitial microenvironment during PH progression remain unclear. We previously established that reciprocal interactions between fibroblasts and macrophages are essential in driving the activated phenotype of both cell types although the signals involved in these interactions remain undefined. We sought to test the hypothesis that adventitial fibroblasts produce a complex array of metabolites and proteins that coordinately direct metabolomic and transcriptomic re-programming of naïve macrophages to recapitulate the pathophysiologic phenotype observed in PH. Media conditioned by pulmonary artery adventitial fibroblasts isolated from pulmonary hypertensive (PH-CM) or age-matched control (CO-CM) calves were used to activate bone marrow derived macrophages. RNA-Seq and mass spectrometry-based metabolomics analyses were performed. Fibroblast conditioned medium from patients with idiopathic pulmonary arterial hypertension or controls were used to validate transcriptional findings. The microenvironment was targeted in vitro using a fibroblast-macrophage co-culture system and in vivo in a mouse model of hypoxia-induced PH. Both CO-CM and PH-CM actively, yet distinctly regulated macrophage transcriptomic and metabolomic profiles. Network integration revealed coordinated rewiring of pro-inflammatory and pro-remodeling gene regulation in concert with altered mitochondrial and intermediary metabolism in response to PH-CM. Pro-inflammation and metabolism are key regulators of macrophage phenotype in vitro, and are closely related to in vivo flow sorted lung interstitial/perivascular macrophages from hypoxic mice. Metabolic changes are accompanied by increased free NADH levels and increased expression of a metabolic sensor and transcriptional co-repressor, C-terminal binding protein 1 (CtBP1), a mechanism shared with adventitial PH-fibroblasts. Targeting the microenvironment created by both cell types with the CtBP1 inhibitor MTOB, inhibited macrophage pro-inflammatory and metabolic re-programming both in vitro and in vivo. In conclusion, coordinated transcriptional and metabolic reprogramming is a critical mechanism regulating macrophage polarization in response to the complex adventitial microenvironment in PH. Targeting the adventitial microenvironment can return activated macrophages toward quiescence and attenuate pathological remodeling that drives PH progression.
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Affiliation(s)
- Min Li
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Suzette Riddle
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Sushil Kumar
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Joanna Poczobutt
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - B. Alexandre McKeon
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Maria G. Frid
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Maureen Ostaff
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Julie A. Reisz
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Travis Nemkov
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Mehdi A. Fini
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Aya Laux
- Department of Craniofacial Biology, School of Dental Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Cheng-Jun Hu
- Department of Craniofacial Biology, School of Dental Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Karim C. El Kasmi
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Angelo D’Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - R. Dale Brown
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Hui Zhang
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Kurt R. Stenmark
- Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
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22
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The Regulatory Role of α-Ketoglutarate Metabolism in Macrophages. Mediators Inflamm 2021; 2021:5577577. [PMID: 33859536 PMCID: PMC8024083 DOI: 10.1155/2021/5577577] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 03/02/2021] [Accepted: 03/10/2021] [Indexed: 12/17/2022] Open
Abstract
Macrophages are multifunctional immune cells whose functions depend on polarizable phenotypes and the microenvironment. Macrophages have two phenotypes, including the M1 proinflammatory phenotype and the M2 anti-inflammatory phenotype, which play important roles in many inflammatory responses and diseases. α-Ketoglutarate is a key metabolite of the TCA cycle and can regulate the phenotype of macrophage polarization to exert anti-inflammatory effects in many inflammation-related diseases. In this review, we primarily elucidate the metabolism, regulatory mechanism, and perspectives of α-ketoglutarate on macrophages. The regulation of macrophage polarization by α-ketoglutarate may provide a promising target for the prevention and therapy of inflammatory diseases and is beneficial to animal health.
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23
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Korwar AM, Hossain A, Lee TJ, Shay AE, Basrur V, Conlon K, Smith PB, Carlson BA, Salis HM, Patterson AD, Prabhu KS. Selenium-dependent metabolic reprogramming during inflammation and resolution. J Biol Chem 2021; 296:100410. [PMID: 33581115 PMCID: PMC7966868 DOI: 10.1016/j.jbc.2021.100410] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 01/22/2021] [Accepted: 02/09/2021] [Indexed: 02/07/2023] Open
Abstract
Trace element selenium (Se) is incorporated as the 21st amino acid, selenocysteine, into selenoproteins through tRNA[Ser]Sec. Selenoproteins act as gatekeepers of redox homeostasis and modulate immune function to effect anti-inflammation and resolution. However, mechanistic underpinnings involving metabolic reprogramming during inflammation and resolution remain poorly understood. Bacterial endotoxin lipopolysaccharide (LPS) activation of murine bone marrow–derived macrophages cultured in the presence or absence of Se (as selenite) was used to examine temporal changes in the proteome and metabolome by multiplexed tandem mass tag–quantitative proteomics, metabolomics, and machine-learning approaches. Kinetic deltagram and clustering analysis indicated that addition of Se led to extensive reprogramming of cellular metabolism upon stimulation with LPS enhancing the pentose phosphate pathway, tricarboxylic acid cycle, and oxidative phosphorylation, to aid in the phenotypic transition toward alternatively activated macrophages, synonymous with resolution of inflammation. Remodeling of metabolic pathways and consequent metabolic adaptation toward proresolving phenotypes began with Se treatment at 0 h and became most prominent around 8 h after LPS stimulation that included succinate dehydrogenase complex, pyruvate kinase, and sedoheptulokinase. Se-dependent modulation of these pathways predisposed bone marrow–derived macrophages to preferentially increase oxidative phosphorylation to efficiently regulate inflammation and its timely resolution. The use of macrophages lacking selenoproteins indicated that all three metabolic nodes were sensitive to selenoproteome expression. Furthermore, inhibition of succinate dehydrogenase complex with dimethylmalonate affected the proresolving effects of Se by increasing the resolution interval in a murine peritonitis model. In summary, our studies provide novel insights into the role of cellular Se via metabolic reprograming to facilitate anti-inflammation and proresolution.
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Affiliation(s)
- Arvind M Korwar
- Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, Pennsylvania, USA
| | - Ayaan Hossain
- Bioinformatics and Genomics, The Pennsylvania State University, University Park, Pennsylvania, USA; Departments of Chemical Engineering, Biological Engineering, and Biomedical Engineering, The Pennsylvania State University, University Park, Pennsylvania, USA
| | - Tai-Jung Lee
- Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, Pennsylvania, USA
| | - Ashley E Shay
- Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, Pennsylvania, USA
| | - Venkatesha Basrur
- Department of Pathology, Proteomics Resource Facility, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Kevin Conlon
- Department of Pathology, Proteomics Resource Facility, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Philip B Smith
- Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, Pennsylvania, USA; The Huck Institutes of the Life Sciences, Metabolomics Facility, The Pennsylvania State University, University Park, Pennsylvania, USA
| | - Bradley A Carlson
- Molecular Biology of Selenium Section, Mouse Cancer Genetics Program, NCI, National Institutes of Health, Bethesda, Maryland, USA
| | - Howard M Salis
- Bioinformatics and Genomics, The Pennsylvania State University, University Park, Pennsylvania, USA; Departments of Chemical Engineering, Biological Engineering, and Biomedical Engineering, The Pennsylvania State University, University Park, Pennsylvania, USA
| | - Andrew D Patterson
- Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, Pennsylvania, USA
| | - K Sandeep Prabhu
- Department of Veterinary and Biomedical Sciences, The Pennsylvania State University, University Park, Pennsylvania, USA.
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24
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Horn CM, Kielian T. Crosstalk Between Staphylococcus aureus and Innate Immunity: Focus on Immunometabolism. Front Immunol 2021; 11:621750. [PMID: 33613555 PMCID: PMC7892349 DOI: 10.3389/fimmu.2020.621750] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 12/21/2020] [Indexed: 12/11/2022] Open
Abstract
Staphylococcus aureus is a leading cause of bacterial infections globally in both healthcare and community settings. The success of this bacterium is the product of an expansive repertoire of virulence factors in combination with acquired antibiotic resistance and propensity for biofilm formation. S. aureus leverages these factors to adapt to and subvert the host immune response. With the burgeoning field of immunometabolism, it has become clear that the metabolic program of leukocytes dictates their inflammatory status and overall effectiveness in clearing an infection. The metabolic flexibility of S. aureus offers an inherent means by which the pathogen could manipulate the infection milieu to promote its survival. The exact metabolic pathways that S. aureus influences in leukocytes are not entirely understood, and more work is needed to understand how S. aureus co-opts leukocyte metabolism to gain an advantage. In this review, we discuss the current knowledge concerning how metabolic biases dictate the pro- vs. anti-inflammatory attributes of various innate immune populations, how S. aureus metabolism influences leukocyte activation, and compare this with other bacterial pathogens. A better understanding of the metabolic crosstalk between S. aureus and leukocytes may unveil novel therapeutic strategies to combat these devastating infections.
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Affiliation(s)
- Christopher M Horn
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Tammy Kielian
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, United States
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25
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Reprogramming of Central Carbon Metabolism in Myeloid Cells upon Innate Immune Receptor Stimulation. IMMUNO 2021. [DOI: 10.3390/immuno1010001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Immunometabolism is a relatively new field of research that aims at understanding interconnections between the immune system and cellular metabolism. This is now well-documented for innate immune cells of the myeloid lineage such as macrophages and myeloid dendritic cells (DCs) when they engage their differentiation or activation programs. Several studies have shown that stimulation of DCs or macrophages by the binding of pathogen-associated molecular patterns (PAMPs) to pattern recognition receptors (PRRs) leads to increased glycolytic activity and rewiring of central carbon metabolism. These metabolic modulations are essential to support and settle immunological functions by providing energy and immunoregulatory metabolites. As the understanding of molecular mechanisms progressed, significant differences between cell types and species have also been discovered. Pathways leading to the regulation of central carbon metabolism in macrophages and DCs by PRR signaling and consequences on cellular functions are reviewed here.
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26
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Qu Y, Hao C, Zhai R, Yao W. Folate and macrophage folate receptor-β in idiopathic pulmonary fibrosis disease: the potential therapeutic target? Biomed Pharmacother 2020; 131:110711. [DOI: 10.1016/j.biopha.2020.110711] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 08/10/2020] [Accepted: 08/28/2020] [Indexed: 02/07/2023] Open
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27
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Muñoz J, Akhavan NS, Mullins AP, Arjmandi BH. Macrophage Polarization and Osteoporosis: A Review. Nutrients 2020; 12:nu12102999. [PMID: 33007863 PMCID: PMC7601854 DOI: 10.3390/nu12102999] [Citation(s) in RCA: 174] [Impact Index Per Article: 43.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 09/22/2020] [Accepted: 09/28/2020] [Indexed: 12/11/2022] Open
Abstract
Over 200 million people suffer from osteoporosis worldwide. Individuals with osteoporosis have increased rates of bone resorption while simultaneously having impaired osteogenesis. Most current treatments for osteoporosis focus on anti-resorptive methods to prevent further bone loss. However, it is important to identify safe and cost-efficient treatments that not only inhibit bone resorption, but also stimulate anabolic mechanisms to upregulate osteogenesis. Recent data suggest that macrophage polarization may contribute to osteoblast differentiation and increased osteogenesis as well as bone mineralization. Macrophages exist in two major polarization states, classically activated macrophages (M1) and alternatively activated macrophage (M2) macrophages. The polarization state of macrophages is dependent on molecules in the microenvironment including several cytokines and chemokines. Mechanistically, M2 macrophages secrete osteogenic factors that stimulate the differentiation and activation of pre-osteoblastic cells, such as mesenchymal stem cells (MSC’s), and subsequently increase bone mineralization. In this review, we cover the mechanisms by which M2 macrophages contribute to osteogenesis and postulate the hypothesis that regulating macrophage polarization states may be a potential treatment for the treatment of osteoporosis.
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28
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Suski M, Wiśniewska A, Kuś K, Kiepura A, Stachowicz A, Stachyra K, Czepiel K, Madej J, Olszanecki R. Decrease of the pro-inflammatory M1-like response by inhibition of dipeptidyl peptidases 8/9 in THP-1 macrophages - quantitative proteomics of the proteome and secretome. Mol Immunol 2020; 127:193-202. [PMID: 32998073 DOI: 10.1016/j.molimm.2020.09.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 07/29/2020] [Accepted: 09/07/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Cellular peptidases are an emerging target of novel pharmacological strategies in inflammatory diseases and cancer. In this context, the dipeptidyl peptidases 8 and 9 (DPP8/9) have gained special attention due to their activities in the immune cells. However, in spite of more than hundred protein substrates identified to date by mass spectrometry-based analysis, the cellular DPP8/9 functions are still elusive. METHODS We applied the proteomic approach (iTRAQ-2DLC-MS/MS) to comprehensively analyze the role of DPP8/9 in the regulation of macrophage activation by in-depth protein quantitation of THP-1 proteome and secretome. RESULTS Cells pre-incubated with DPP8/9 inhibitor (1G244) prior activation (LPS or IL-4/IL-13) diminished the expression levels of M1-like response markers, but not M2-like phenotype features. This was accompanied by multiple intra- and extra-cellular protein abundance changes in THP-1 cells, related to cellular metabolism, mitochondria and endoplasmic reticulum function, as well as those engaged with inflammatory and apoptotic processes, including previously reported and novel DPP8/9 targets. CONCLUSIONS Inhibition of DPP 8/9 had a profound effect on the THP-1 macrophage proteome and secretome, evidencing the decrease of the pro-inflammatory M1-like response. Presented results are to our best knowledge the first which, among others, highlight the metabolic effects of DPP8/9 inhibition in macrophages.
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Affiliation(s)
- Maciej Suski
- Chair of Pharmacology Faculty of Medicine, Jagiellonian University Medical College, 16 Grzegorzecka str., 31-531, Krakow, Poland.
| | - Anna Wiśniewska
- Chair of Pharmacology Faculty of Medicine, Jagiellonian University Medical College, 16 Grzegorzecka str., 31-531, Krakow, Poland
| | - Katarzyna Kuś
- Chair of Pharmacology Faculty of Medicine, Jagiellonian University Medical College, 16 Grzegorzecka str., 31-531, Krakow, Poland
| | - Anna Kiepura
- Chair of Pharmacology Faculty of Medicine, Jagiellonian University Medical College, 16 Grzegorzecka str., 31-531, Krakow, Poland
| | - Aneta Stachowicz
- Chair of Pharmacology Faculty of Medicine, Jagiellonian University Medical College, 16 Grzegorzecka str., 31-531, Krakow, Poland
| | - Kamila Stachyra
- Chair of Pharmacology Faculty of Medicine, Jagiellonian University Medical College, 16 Grzegorzecka str., 31-531, Krakow, Poland
| | - Klaudia Czepiel
- Chair of Pharmacology Faculty of Medicine, Jagiellonian University Medical College, 16 Grzegorzecka str., 31-531, Krakow, Poland
| | - Józef Madej
- Chair of Pharmacology Faculty of Medicine, Jagiellonian University Medical College, 16 Grzegorzecka str., 31-531, Krakow, Poland
| | - Rafał Olszanecki
- Chair of Pharmacology Faculty of Medicine, Jagiellonian University Medical College, 16 Grzegorzecka str., 31-531, Krakow, Poland
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29
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Harber KJ, de Goede KE, Verberk SGS, Meinster E, de Vries HE, van Weeghel M, de Winther MPJ, Van den Bossche J. Succinate Is an Inflammation-Induced Immunoregulatory Metabolite in Macrophages. Metabolites 2020; 10:metabo10090372. [PMID: 32942769 PMCID: PMC7569821 DOI: 10.3390/metabo10090372] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 08/28/2020] [Accepted: 09/15/2020] [Indexed: 01/09/2023] Open
Abstract
Immunometabolism revealed the crucial role of cellular metabolism in controlling immune cell phenotype and functions. Macrophages, key immune cells that support progression of numerous inflammatory diseases, have been well described as undergoing vast metabolic rewiring upon activation. The immunometabolite succinate particularly gained a lot of attention and emerged as a crucial regulator of macrophage responses and inflammation. Succinate was originally described as a metabolite that supports inflammation via distinct routes. Recently, studies have indicated that succinate and its receptor SUCNR1 can suppress immune responses as well. These apparent contradictory effects might be due to specific experimental settings and particularly the use of distinct succinate forms. We therefore compared the phenotypic and functional effects of distinct succinate forms and receptor mouse models that were previously used for studying succinate immunomodulation. Here, we show that succinate can suppress secretion of inflammatory mediators IL-6, tumor necrosis factor (TNF) and nitric oxide (NO), as well as inhibit Il1b mRNA expression of inflammatory macrophages in a SUCNR1-independent manner. We also observed that macrophage SUCNR1 deficiency led to an enhanced inflammatory response without addition of exogenous succinate. While our study does not reveal new mechanistic insights into how succinate elicits different inflammatory responses, it does indicate that the inflammatory effects of succinate and its receptor SUCNR1 in macrophages are clearly context dependent.
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Affiliation(s)
- Karl J. Harber
- Department of Molecular Cell Biology and Immunology, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands; (K.J.H.); (K.E.d.G.); (S.G.S.V.); (E.M.); (H.E.d.V.)
- Department of Medical Biochemistry, Amsterdam UMC, University of Amsterdam, Experimental Vascular Biology, 1105 AZ Amsterdam, The Netherlands;
- Laboratory Genetic Metabolic Diseases, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands;
| | - Kyra E. de Goede
- Department of Molecular Cell Biology and Immunology, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands; (K.J.H.); (K.E.d.G.); (S.G.S.V.); (E.M.); (H.E.d.V.)
| | - Sanne G. S. Verberk
- Department of Molecular Cell Biology and Immunology, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands; (K.J.H.); (K.E.d.G.); (S.G.S.V.); (E.M.); (H.E.d.V.)
| | - Elisa Meinster
- Department of Molecular Cell Biology and Immunology, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands; (K.J.H.); (K.E.d.G.); (S.G.S.V.); (E.M.); (H.E.d.V.)
| | - Helga E. de Vries
- Department of Molecular Cell Biology and Immunology, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands; (K.J.H.); (K.E.d.G.); (S.G.S.V.); (E.M.); (H.E.d.V.)
| | - Michel van Weeghel
- Laboratory Genetic Metabolic Diseases, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands;
| | - Menno P. J. de Winther
- Department of Medical Biochemistry, Amsterdam UMC, University of Amsterdam, Experimental Vascular Biology, 1105 AZ Amsterdam, The Netherlands;
| | - Jan Van den Bossche
- Department of Molecular Cell Biology and Immunology, Amsterdam UMC, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands; (K.J.H.); (K.E.d.G.); (S.G.S.V.); (E.M.); (H.E.d.V.)
- Correspondence:
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30
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Canagliflozin alleviates LPS-induced acute lung injury by modulating alveolar macrophage polarization. Int Immunopharmacol 2020; 88:106969. [PMID: 33182027 DOI: 10.1016/j.intimp.2020.106969] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 08/31/2020] [Accepted: 08/31/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND Canagliflozin (CANA), a sodium-glucose cotransporter 2 inhibitor, is a novel therapeutic agent that exhibits multiple actions in type 2 diabetes. CANA can regulate intracellular glucose metabolism and exert anti-inflammatory effects in immune cells. Alveolar macrophage polarization balance is often associated with lower inflammation in acute lung injury (ALI). However, little is known about the anti-inflammatory effect of CANA on ALI. METHODS This study aimed to determine the effect of CANA on ALI as well as its potential ability to modulate alveolar macrophage polarization in ALI mouse models and bone marrow-derived macrophages (BMDMs). RESULTS The histopathological changes indicated that CANA alleviated lung injury in lipopolysaccharide-induced ALI mice models and exerted anti-inflammatory effects in the presence of lower levels of tumor necrosis factor-ɑ, interleukin-6, and interleukin-1β in bronchoalveolar lavage fluid (BALF) and serum. Moreover, flow cytometry analysis of mouse BALF cells and BMDMs demonstrated that CANA can modulate and reconstitute M1 and M2 macrophage balance, inhibiting macrophages with the M1 phenotype while promoting macrophages to shift to the M2 phenotype. Immunohistochemistry and reverse transcription polymerase chain reaction were also performed. CONCLUSIONS These findings indicate that CANA alleviates lung injury and exerts anti-inflammatory effects by modulating alveolar macrophage polarization balance, suggesting that CANA might act as a novel anti-inflammatory drug for treating ALI.
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31
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Pocate-Cheriet K, Santulli P, Kateb F, Bourdon M, Maignien C, Batteux F, Chouzenoux S, Patrat C, Wolf JP, Bertho G, Chapron C. The follicular fluid metabolome differs according to the endometriosis phenotype. Reprod Biomed Online 2020; 41:1023-1037. [PMID: 33046374 DOI: 10.1016/j.rbmo.2020.09.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 08/12/2020] [Accepted: 09/02/2020] [Indexed: 12/11/2022]
Abstract
RESEARCH QUESTION Is there a follicular fluid-specific metabolic profile in deep infiltrating endometriosis (DIE) depending on the presence of an associated ovarian endometrioma (OMA) that could lead to the identification of biomarkers for diagnosis and prognosis of the disease? DESIGN In this prospective cohort study, proton nuclear magnetic resonance (1H-NMR) experiments were carried out on 50 follicular fluid samples from patients presenting with DIE, associated or not associated with an OMA, and 29 follicular fluid samples from patients with infertility caused by a tubal obstruction. RESULTS Concentrations of glucose, citrate, creatine and amino acids such as tyrosine and alanine were lower in women with DIE than control participants, whereas concentrations of lactate, pyruvate, lipids and ketone bodies were higher. Metabolic analysis revealed enhanced concentrations of glycerol and ketone bodies in patients with OMA, indicative of an activation of lipolysis followed by beta-oxidation. Concentrations of lactate and pyruvate were increased in patients without OMA, whereas the concentration of glucose was decreased, highlighting activation of the anaerobic glycolysis pathway. Differences in concentrations of amino acids such as threonine and glutamine were also statistically relevant in discriminating between the presence or absence of OMA. CONCLUSIONS Results indicate a mitochondrial dysregulation in endometriosis phenotypes, with a modified balance between anaerobic glycolysis and beta-oxidation in OMA phenotypes that could affect the fertility of women with endometriosis. As the composition of the follicular fluid has been shown to be correlated with oocyte development and outcome of implantation after fertilization, these findings may help explain the high level of infertility in these patients.
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Affiliation(s)
- Khaled Pocate-Cheriet
- Université de Paris, Faculté de Médecine, Paris, France; Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Cochin (HUPC), Centre Hospitalier Paris Centre, Paris, France; Service d'Histologie-Embryologie-Biologie de la Reproduction, Paris, France; Département "Développement, Reproduction et Cancer", Institut Cochin, INSERM U1016, Université de Paris, Paris, France.
| | - Pietro Santulli
- Université de Paris, Faculté de Médecine, Paris, France; Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Cochin (HUPC), Centre Hospitalier Paris Centre, Paris, France; Département "Développement, Reproduction et Cancer", Institut Cochin, INSERM U1016, Université de Paris, Paris, France; Département de Gynécologie Obstétrique II et Médecine de la Reproduction, Paris, France
| | - Fatiha Kateb
- Université de Paris, Faculté de Médecine, Paris, France; Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Cochin (HUPC), Centre Hospitalier Paris Centre, Paris, France; Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601-CNRS, Université de Paris, Campus Saint-Germain-des-Prés, Paris, France
| | - Mathilde Bourdon
- Université de Paris, Faculté de Médecine, Paris, France; Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Cochin (HUPC), Centre Hospitalier Paris Centre, Paris, France; Département "Développement, Reproduction et Cancer", Institut Cochin, INSERM U1016, Université de Paris, Paris, France; Département de Gynécologie Obstétrique II et Médecine de la Reproduction, Paris, France
| | - Chloé Maignien
- Université de Paris, Faculté de Médecine, Paris, France; Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Cochin (HUPC), Centre Hospitalier Paris Centre, Paris, France; Département de Gynécologie Obstétrique II et Médecine de la Reproduction, Paris, France
| | - Frédéric Batteux
- Université de Paris, Faculté de Médecine, Paris, France; Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Cochin (HUPC), Centre Hospitalier Paris Centre, Paris, France; Département "Développement, Reproduction et Cancer", Institut Cochin, INSERM U1016, Université de Paris, Paris, France; Service d'Immunologie Biologique, Paris, France
| | - Sandrine Chouzenoux
- Université de Paris, Faculté de Médecine, Paris, France; Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Cochin (HUPC), Centre Hospitalier Paris Centre, Paris, France; Département "Développement, Reproduction et Cancer", Institut Cochin, INSERM U1016, Université de Paris, Paris, France
| | - Catherine Patrat
- Université de Paris, Faculté de Médecine, Paris, France; Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Cochin (HUPC), Centre Hospitalier Paris Centre, Paris, France; Service d'Histologie-Embryologie-Biologie de la Reproduction, Paris, France
| | - Jean Philippe Wolf
- Université de Paris, Faculté de Médecine, Paris, France; Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Cochin (HUPC), Centre Hospitalier Paris Centre, Paris, France; Service d'Histologie-Embryologie-Biologie de la Reproduction, Paris, France
| | - Gildas Bertho
- Université de Paris, Faculté de Médecine, Paris, France; Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Cochin (HUPC), Centre Hospitalier Paris Centre, Paris, France; Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601-CNRS, Université de Paris, Campus Saint-Germain-des-Prés, Paris, France
| | - Charles Chapron
- Université de Paris, Faculté de Médecine, Paris, France; Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Cochin (HUPC), Centre Hospitalier Paris Centre, Paris, France; Département "Développement, Reproduction et Cancer", Institut Cochin, INSERM U1016, Université de Paris, Paris, France; Département de Gynécologie Obstétrique II et Médecine de la Reproduction, Paris, France
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Mellergaard M, Høgh RI, Lund A, Aldana BI, Guérillot R, Møller SH, Hayes AS, Panagiotopoulou N, Frimand Z, Jepsen SD, Hansen CHF, Andresen L, Larsen AR, Peleg AY, Stinear TP, Howden BP, Waagepetersen HS, Frees D, Skov S. Staphylococcus aureus induces cell-surface expression of immune stimulatory NKG2D ligands on human monocytes. J Biol Chem 2020; 295:11803-11821. [PMID: 32605922 PMCID: PMC7450114 DOI: 10.1074/jbc.ra120.012673] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 06/24/2020] [Indexed: 12/24/2022] Open
Abstract
Staphylococcus aureus is among the leading causes of bacterial infections worldwide. The pathogenicity and establishment of S. aureus infections are tightly linked to its ability to modulate host immunity. Persistent infections are often associated with mutant staphylococcal strains that have decreased susceptibility to antibiotics; however, little is known about how these mutations influence bacterial interaction with the host immune system. Here, we discovered that clinical S. aureus isolates activate human monocytes, leading to cell-surface expression of immune stimulatory natural killer group 2D (NKG2D) ligands on the monocytes. We found that expression of the NKG2D ligand ULBP2 (UL16-binding protein 2) is associated with bacterial degradability and phagolysosomal activity. Moreover, S. aureus-induced ULBP2 expression was linked to altered host cell metabolism, including increased cytoplasmic (iso)citrate levels, reduced glycolytic flux, and functional mitochondrial activity. Interestingly, we found that the ability of S. aureus to induce ULBP2 and proinflammatory cytokines in human monocytes depends on a functional ClpP protease in S. aureus These findings indicate that S. aureus activates ULBP2 in human monocytes through immunometabolic mechanisms and reveal that clpP inactivation may function as a potential immune evasion mechanism. Our results provide critical insight into the interplay between the host immune system and S. aureus that has evolved under the dual selective pressure of host immune responses and antibiotic treatment. Our discovery of an immune stimulatory pathway consisting of human monocyte-based defense against S. aureus suggests that targeting the NKG2D pathway holds potential for managing persistent staphylococcal infections.
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Affiliation(s)
- Maiken Mellergaard
- Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Rikke Illum Høgh
- Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Astrid Lund
- Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Blanca Irene Aldana
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Romain Guérillot
- Department of Microbiology and Immunology, University of Melbourne at the Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - Sofie Hedlund Møller
- Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Ashleigh S Hayes
- Department of Microbiology and Immunology, University of Melbourne at the Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - Nafsika Panagiotopoulou
- Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Zofija Frimand
- Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Stine Dam Jepsen
- Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Camilla Hartmann Friis Hansen
- Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Lars Andresen
- Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Anders Rhod Larsen
- Statens Serum Institut, Microbiology and Infection Control, Copenhagen, Denmark
| | - Anton Y Peleg
- Department of Infectious Diseases, Alfred Hospital and Central Clinical School, Monash University, Melbourne, Victoria, Australia
- Infection and Immunity Program, Monash Biomedicine Discovery Institute and Department of Microbiology, Monash University, Melbourne, Victoria, Australia
| | - Timothy P Stinear
- Department of Microbiology and Immunology, University of Melbourne at the Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - Benjamin P Howden
- Department of Microbiology and Immunology, University of Melbourne at the Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia
| | - Helle S Waagepetersen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Dorte Frees
- Food Safety and Zoonosis, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Søren Skov
- Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Lactate released by inflammatory bone marrow neutrophils induces their mobilization via endothelial GPR81 signaling. Nat Commun 2020; 11:3547. [PMID: 32669546 PMCID: PMC7363928 DOI: 10.1038/s41467-020-17402-2] [Citation(s) in RCA: 91] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 06/22/2020] [Indexed: 12/12/2022] Open
Abstract
Neutrophils provide first line of host defense against bacterial infections utilizing glycolysis for their effector functions. How glycolysis and its major byproduct lactate are triggered in bone marrow (BM) neutrophils and their contribution to neutrophil mobilization in acute inflammation is not clear. Here we report that bacterial lipopolysaccharides (LPS) or Salmonella Typhimurium triggers lactate release by increasing glycolysis, NADPH-oxidase-mediated reactive oxygen species and HIF-1α levels in BM neutrophils. Increased release of BM lactate preferentially promotes neutrophil mobilization by reducing endothelial VE-Cadherin expression, increasing BM vascular permeability via endothelial lactate-receptor GPR81 signaling. GPR81-/- mice mobilize reduced levels of neutrophils in response to LPS, unless rescued by VE-Cadherin disrupting antibodies. Lactate administration also induces release of the BM neutrophil mobilizers G-CSF, CXCL1 and CXCL2, indicating that this metabolite drives neutrophil mobilization via multiple pathways. Our study reveals a metabolic crosstalk between lactate-producing neutrophils and BM endothelium, which controls neutrophil mobilization under bacterial infection.
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Erlich JR, To EE, Liong S, Brooks R, Vlahos R, O'Leary JJ, Brooks DA, Selemidis S. Targeting Evolutionary Conserved Oxidative Stress and Immunometabolic Pathways for the Treatment of Respiratory Infectious Diseases. Antioxid Redox Signal 2020; 32:993-1013. [PMID: 32008371 PMCID: PMC7426980 DOI: 10.1089/ars.2020.8028] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Significance: Up until recently, metabolism has scarcely been referenced in terms of immunology. However, emerging evidence has shown that immune cells undergo an adaptation of metabolic processes, known as the metabolic switch. This switch is key to the activation, and sustained inflammatory phenotype in immune cells, which includes the production of cytokines and reactive oxygen species (ROS) that underpin infectious diseases, respiratory and cardiovascular disease, neurodegenerative disease, as well as cancer. Recent Advances: There is a burgeoning body of evidence that immunometabolism and redox biology drive infectious diseases. For example, influenza A virus (IAV) utilizes endogenous ROS production via NADPH oxidase (NOX)2-containing NOXs and mitochondria to circumvent antiviral responses. These evolutionary conserved processes are promoted by glycolysis, the pentose phosphate pathway, and the tricarboxylic acid (TCA) cycle that drive inflammation. Such metabolic products involve succinate, which stimulates inflammation through ROS-dependent stabilization of hypoxia-inducible factor-1α, promoting interleukin-1β production by the inflammasome. In addition, itaconate has recently gained significant attention for its role as an anti-inflammatory and antioxidant metabolite of the TCA cycle. Critical Issues: The molecular mechanisms by which immunometabolism and ROS promote viral and bacterial pathology are largely unknown. This review will provide an overview of the current paradigms with an emphasis on the roles of immunometabolism and ROS in the context of IAV infection and secondary complications due to bacterial infection such as Streptococcus pneumoniae. Future Directions: Molecular targets based on metabolic cell processes and ROS generation may provide novel and effective therapeutic strategies for IAV and associated bacterial superinfections.
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Affiliation(s)
- Jonathan R. Erlich
- Program in Chronic Infectious and Inflammatory Diseases, Oxidant and Inflammation Biology Group, School of Health and Biomedical Sciences, College of Science, Engineering & Health, RMIT University, Bundoora, Australia
| | - Eunice E. To
- Program in Chronic Infectious and Inflammatory Diseases, Oxidant and Inflammation Biology Group, School of Health and Biomedical Sciences, College of Science, Engineering & Health, RMIT University, Bundoora, Australia
| | - Stella Liong
- Program in Chronic Infectious and Inflammatory Diseases, Oxidant and Inflammation Biology Group, School of Health and Biomedical Sciences, College of Science, Engineering & Health, RMIT University, Bundoora, Australia
| | - Robert Brooks
- School of Pharmacy and Medical Sciences, University of South Australia Cancer Research Institute, University of South Australia, Adelaide, Australia
| | - Ross Vlahos
- Program in Chronic Infectious and Inflammatory Diseases, Oxidant and Inflammation Biology Group, School of Health and Biomedical Sciences, College of Science, Engineering & Health, RMIT University, Bundoora, Australia
| | - John J. O'Leary
- School of Pharmacy and Medical Sciences, University of South Australia Cancer Research Institute, University of South Australia, Adelaide, Australia
- Department of Histopathology, Trinity College Dublin, Dublin, Ireland
- Sir Patrick Dun's Laboratory, Central Pathology Laboratory, St James's Hospital, Dublin, Ireland
| | - Doug A. Brooks
- School of Pharmacy and Medical Sciences, University of South Australia Cancer Research Institute, University of South Australia, Adelaide, Australia
- Molecular Pathology Laboratory, Coombe Women and Infants' University Hospital, Dublin, Ireland
| | - Stavros Selemidis
- Program in Chronic Infectious and Inflammatory Diseases, Oxidant and Inflammation Biology Group, School of Health and Biomedical Sciences, College of Science, Engineering & Health, RMIT University, Bundoora, Australia
- Address correspondence to: Prof. Stavros Selemidis, Program in Chronic Infectious and Inflammatory Diseases, Oxidant and Inflammation Biology Group, School of Health and Biomedical Sciences, College of Science, Engineering & Health, RMIT University, Bundoora, VIC 3083, Australia
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35
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El-Lakany MA, Fouda MA, El-Gowelli HM, El-Mas MM. Ovariectomy provokes inflammatory and cardiovascular effects of endotoxemia in rats: Dissimilar benefits of hormonal supplements. Toxicol Appl Pharmacol 2020; 393:114928. [PMID: 32092384 DOI: 10.1016/j.taap.2020.114928] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 01/31/2020] [Accepted: 02/20/2020] [Indexed: 12/18/2022]
Abstract
The female gender is protected against immunological complications of endotoxemia. Here we investigated whether gonadal hormone depletion by ovariectomy (OVX) uncovers inflammatory and cardiovascular effects of endotoxemia and whether these effects are reversed by hormone replacement therapies. Changes in inflammatory cytokines, blood pressure (BP), left ventricular (LV) function, and cardiac autonomic activity caused by lipopolysaccharide (LPS) in conscious female rats with different hormonal states were determined. In contrast to no effects in sham-operated females, treatment of OVX rats with LPS (i) decreased BP, (ii) increased spectral low-frequency/high-frequency ratio of HRV, denoting enhanced cardiac sympathetic dominance, (iii) attenuated reflex tachycardic responses to sodium nitroprusside, and (iv) increased systolic contractility (dP/dtmax). The developed hypotension was (i) fully eliminated in estrogen (E2)-pretreated OVX rats, (ii) partially counteracted after selective activation of estrogen receptor-α (PPT) or β (DPN). All estrogenic compounds abrogated LPS enhancement of cardiac sympathetic drive. However, PPT was more successful than E2 or DPN in compromising LPS depression in baroreflex activity and elevation in dP/dtmax. Molecular studies showed that PPT was most effective in attenuating the upregulated myocardial expressions of NF-κB and iNOS in endotoxic OVX rats. Myocardial expression of the defensive HSP70 was comparably increased by all estrogenic products. Except for improved cardiac spectral activity, none of these functional or molecular entities was affected by medroxyprogesterone acetate (MPA). Overall, our data suggest diverse therapeutic advantages for gonadal hormones in the worsened endotoxic complications in rats with surgical menopause, with probably more favorable role for ERα agonism within this context.
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Affiliation(s)
- Mohammed A El-Lakany
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Mohamed A Fouda
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Hanan M El-Gowelli
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Mahmoud M El-Mas
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt.
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36
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Huang L, Wang C, Xu H, Peng G. Targeting citrate as a novel therapeutic strategy in cancer treatment. Biochim Biophys Acta Rev Cancer 2019; 1873:188332. [PMID: 31751601 DOI: 10.1016/j.bbcan.2019.188332] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 11/14/2019] [Accepted: 11/15/2019] [Indexed: 01/09/2023]
Abstract
An important feature shared by many cancer cells is drastically altered metabolism that is critical for rapid growth and proliferation. The distinctly reprogrammed metabolism in cancer cells makes it possible to manipulate the levels of metabolites for cancer treatment. Citrate is a key metabolite that bridges many important metabolic pathways. Recent studies indicate that manipulating the level of citrate can impact the behaviors of both cancer and immune cells, resulting in induction of cancer cell apoptosis, boosting immune responses, and enhanced cancer immunotherapy. In this review, we discuss the recent developments in this emerging area of targeting citrate in cancer treatment. Specifically, we summarize the molecular basis of altered citrate metabolism in both tumors and immune cells, explore the seemingly conflicted growth promoting and growth inhibiting roles of citrate in various tumors, discuss the use of citrate in the clinic as a novel biomarker for cancer progression and outcomes, and highlight the new development of combining citrate with other therapeutic strategies in cancer therapy. An improved understanding of complex roles of citrate in the suppressive tumor microenvironment should open new avenues for cancer therapy.
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Affiliation(s)
- Lan Huang
- Division of Infectious Diseases, Allergy & Immunology, Department of Internal Medicine, Saint Louis University School of Medicine, Saint Louis, MO 63104, USA; Department of Immunology, Jiangsu University School of Medicine, Zhenjiang 212013, PR China
| | - Cindy Wang
- Division of Infectious Diseases, Allergy & Immunology, Department of Internal Medicine, Saint Louis University School of Medicine, Saint Louis, MO 63104, USA
| | - Huaxi Xu
- Department of Immunology, Jiangsu University School of Medicine, Zhenjiang 212013, PR China
| | - Guangyong Peng
- Division of Infectious Diseases, Allergy & Immunology, Department of Internal Medicine, Saint Louis University School of Medicine, Saint Louis, MO 63104, USA.
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37
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Basit F, de Vries IJM. Dendritic Cells Require PINK1-Mediated Phosphorylation of BCKDE1α to Promote Fatty Acid Oxidation for Immune Function. Front Immunol 2019; 10:2386. [PMID: 31681280 PMCID: PMC6803436 DOI: 10.3389/fimmu.2019.02386] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 09/23/2019] [Indexed: 01/16/2023] Open
Abstract
Dendritic cell (DCs) activation by Toll-like receptor (TLR) agonist induces robust metabolic rewiring toward glycolysis. Recent findings in the field identified mechanistic details governing these metabolic adaptations. However, it is unknown whether a switch to glycolysis from oxidative phosphorylation (OXPHOS) is a general characteristic of DCs upon pathogen encounter. Here we show that engagement of different TLR triggers differential metabolic adaptations in DCs. We demonstrate that LPS-mediated TLR4 stimulation induces glycolysis in DCs. Conversely, activation of TLR7/8 with protamine-RNA complex, pRNA, leads to an increase in OXPHOS. Mechanistically, we found that pRNA stimulation phosphorylates BCKDE1α in a PINK1-dependent manner. pRNA stimulation increased branched-chain amino acid levels and increased fatty acid oxidation. Increased FAO and OXPHOS are required for DC activation. PINK1 deficient DCs switch to glycolysis to maintain ATP levels and viability. Moreover, pharmacological induction of PINK1 kinase activity primed immunosuppressive DC for immunostimulatory function. Our findings provide novel insight into differential metabolic adaptations and reveal the important role of branched-chain amino acid in regulating immune response in DC.
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Affiliation(s)
- Farhan Basit
- Department of Tumor Immunology, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, Nijmegen, Netherlands
| | - I Jolanda M de Vries
- Department of Tumor Immunology, Radboud University Medical Center, Radboud Institute for Molecular Life Sciences, Nijmegen, Netherlands.,Department of Medical Oncology, Radboud University Medical Center, Nijmegen, Netherlands
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Alqarni AM, Dissanayake T, Nelson DJ, Parkinson JA, Dufton MJ, Ferro VA, Watson DG. Metabolomic Profiling of the Immune Stimulatory Effect of Eicosenoids on PMA-Differentiated THP-1 Cells. Vaccines (Basel) 2019; 7:vaccines7040142. [PMID: 31600945 PMCID: PMC6963534 DOI: 10.3390/vaccines7040142] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 09/26/2019] [Accepted: 09/27/2019] [Indexed: 12/19/2022] Open
Abstract
Honey bee venom has been established to have significant effect in immunotherapy. In the present study, (Z)-11-eicosenol-a major constituent of bee venom, along with its derivations methyl cis-11-eicosenoate and cis-11-eicosenoic acid, were synthesised to investigate their immune stimulatory effect and possible use as vaccine adjuvants. Stimuli that prime and activate the immune system have exerted profound effects on immune cells, particularly macrophages; however, the effectiveness of bee venom constituents as immune stimulants has not yet been established. Here, the abilities of these compounds to act as pro-inflammatory stimuli were assessed, either alone or in combination with lipopolysaccharide (LPS), by examining the secretion of tumour necrosis factor-α (TNF-α) and the cytokines interleukin-1β (IL-1β), IL-6 and IL-10 by THP-1 macrophages. The compounds clearly increased the levels of IL-1β and decreased IL-10, whereas a decrease in IL-6 levels suggested a complex mechanism of action. A more in-depth profile of macrophage behaviour was therefore obtained by comprehensive untargeted metabolic profiling of the cells using liquid chromatography mass spectrometry (LC-MS) to confirm the ability of the eicosanoids to trigger the immune system. The level of 358 polar and 315 non-polar metabolites were changed significantly (p < 0.05) by all treatments. The LPS-stimulated production of most of the inflammatory metabolite biomarkers in glycolysis, the tricarboxylic acid (TCA) cycle, the pentose phosphate pathway, purine, pyrimidine and fatty acids metabolism were significantly enhanced by all three compounds, and particularly by methyl cis-11-eicosenoate and cis-11-eicosenoic acid. These findings support the proposed actions of (Z)-11-eicosenol, methyl cis-11-eicosenoate and cis-11-eicosenoic acid as immune system stimulators.
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Affiliation(s)
- Abdulmalik M Alqarni
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, UK.
- Department of Pharmaceutical Chemistry, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University (University of Dammam), Dammam 31441, Saudi Arabia.
| | - Tharushi Dissanayake
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK.
| | - David J Nelson
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK.
| | - John A Parkinson
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK.
| | - Mark J Dufton
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK.
| | - Valerie A Ferro
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, UK.
| | - David G Watson
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, UK.
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Hargrave KE, Woods S, Millington O, Chalmers S, Westrop GD, Roberts CW. Multi-Omics Studies Demonstrate Toxoplasma gondii-Induced Metabolic Reprogramming of Murine Dendritic Cells. Front Cell Infect Microbiol 2019; 9:309. [PMID: 31572687 PMCID: PMC6749083 DOI: 10.3389/fcimb.2019.00309] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 08/12/2019] [Indexed: 01/14/2023] Open
Abstract
Toxoplasma gondii is capable of actively invading almost any mammalian cell type including phagocytes. Early events in phagocytic cells such as dendritic cells are not only key to establishing parasite infection, but conversely play a pivotal role in initiating host immunity. It is now recognized that in addition to changes in canonical immune markers and mediators, alteration in metabolism occurs upon activation of phagocytic cells. These metabolic changes are important for supporting the developing immune response, but can affect the availability of nutrients for intracellular pathogens including T. gondii. However, the interaction of T. gondii with these cells and particularly how infection changes their metabolism has not been extensively investigated. Herein, we use a multi-omics approach comprising transcriptomics and metabolomics validated with functional assays to better understand early events in these cells following infection. Analysis of the transcriptome of T. gondii infected bone marrow derived dendritic cells (BMDCs) revealed significant alterations in transcripts associated with cellular metabolism, activation of T cells, inflammation mediated chemokine and cytokine signaling pathways. Multivariant analysis of metabolomic data sets acquired through non-targeted liquid chromatography mass spectroscopy (LCMS) identified metabolites associated with glycolysis, the TCA cycle, oxidative phosphorylation and arginine metabolism as major discriminants between control uninfected and T. gondii infected cells. Consistent with these observations, glucose uptake and lactate dehydrogenase activity were upregulated in T. gondii infected BMDC cultures compared with control BMDCs. Conversely, BMDC mitochondrial membrane potential was reduced in T. gondii-infected cells relative to mitochondria of control BMDCs. These changes to energy metabolism, similar to what has been described following LPS stimulation of BMDCs and macrophages are often termed the Warburg effect. This metabolic reprogramming of cells has been suggested to be an important adaption that provides energy and precursors to facilitate phagocytosis, antigen processing and cytokine production. Other changes to BMDC metabolism are evident following T. gondii infection and include upregulation of arginine degradation concomitant with increased arginase-1 activity and ornithine and proline production. As T. gondii is an arginine auxotroph the resultant reduced cellular arginine levels are likely to curtail parasite multiplication. These results highlight the complex interplay of BMDCs and parasite metabolism within the developing immune response and the consequences for adaptive immunity and pathogen clearance.
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Affiliation(s)
- Kerrie E Hargrave
- Strathclyde Institute of Pharmacy & Biomedical Sciences, University of Strathclyde, Glasgow, United Kingdom
| | - Stuart Woods
- Strathclyde Institute of Pharmacy & Biomedical Sciences, University of Strathclyde, Glasgow, United Kingdom
| | - Owain Millington
- Strathclyde Institute of Pharmacy & Biomedical Sciences, University of Strathclyde, Glasgow, United Kingdom
| | - Susan Chalmers
- Strathclyde Institute of Pharmacy & Biomedical Sciences, University of Strathclyde, Glasgow, United Kingdom
| | - Gareth D Westrop
- Strathclyde Institute of Pharmacy & Biomedical Sciences, University of Strathclyde, Glasgow, United Kingdom
| | - Craig W Roberts
- Strathclyde Institute of Pharmacy & Biomedical Sciences, University of Strathclyde, Glasgow, United Kingdom
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40
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Traven A, Naderer T. Central metabolic interactions of immune cells and microbes: prospects for defeating infections. EMBO Rep 2019; 20:e47995. [PMID: 31267653 PMCID: PMC6607010 DOI: 10.15252/embr.201947995] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 04/22/2019] [Accepted: 05/27/2019] [Indexed: 12/16/2022] Open
Abstract
Antimicrobial drug resistance is threatening to take us to the "pre-antibiotic era", where people are dying from preventable and treatable diseases and the risk of hospital-associated infections compromises the success of surgery and cancer treatments. Development of new antibiotics is slow, and alternative approaches to control infections have emerged based on insights into metabolic pathways in host-microbe interactions. Central carbon metabolism of immune cells is pivotal in mounting an effective response to invading pathogens, not only to meet energy requirements, but to directly activate antimicrobial responses. Microbes are not passive players here-they remodel their metabolism to survive and grow in host environments. Sometimes, microbes might even benefit from the metabolic reprogramming of immune cells, and pathogens such as Candida albicans, Salmonella Typhimurium and Staphylococcus aureus can compete with activated host cells for sugars that are needed for essential metabolic pathways linked to inflammatory processes. Here, we discuss how metabolic interactions between innate immune cells and microbes determine their survival during infection, and ways in which metabolism could be manipulated as a therapeutic strategy.
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Affiliation(s)
- Ana Traven
- Infection and Immunity Program and the Department of Biochemistry & Molecular BiologyBiomedicine Discovery InstituteMonash UniversityClaytonVic.Australia
| | - Thomas Naderer
- Infection and Immunity Program and the Department of Biochemistry & Molecular BiologyBiomedicine Discovery InstituteMonash UniversityClaytonVic.Australia
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Alqarni AM, Niwasabutra K, Sahlan M, Fearnley H, Fearnley J, Ferro VA, Watson DG. Propolis Exerts an Anti-Inflammatory Effect on PMA-Differentiated THP-1 Cells via Inhibition of Purine Nucleoside Phosphorylase. Metabolites 2019; 9:metabo9040075. [PMID: 30995826 PMCID: PMC6523283 DOI: 10.3390/metabo9040075] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 04/09/2019] [Accepted: 04/15/2019] [Indexed: 12/13/2022] Open
Abstract
Previous research has shown that propolis has immunomodulatory activity. Propolis extracts from different geographic origins were assessed for their anti-inflammatory activities by investigating their ability to alter the production of tumour necrosis factor-α (TNF-α) and the cytokines interleukin-1β (IL-1β), IL-6 and IL-10 in THP-1-derived macrophage cells co-stimulated with lipopolysaccharide (LPS). All the propolis extracts suppressed the TNF-α and IL-6 LPS-stimulated levels. Similar suppression effects were detected for IL-1β, but the release of this cytokine was synergised by propolis samples from Ghana and Indonesia when compared with LPS. Overall, the Cameroonian propolis extract (P-C) was the most active and this was evaluated for its effects on the metabolic profile of unstimulated macrophages or macrophages activated by LPS. The levels of 81 polar metabolites were identified by liquid chromatography (LC) coupled with mass spectrometry (MS) on a ZIC-pHILIC column. LPS altered the energy, amino acid and nucleotide metabolism in THP-1 cells, and interpretation of the metabolic pathways showed that P-C reversed some of the effects of LPS. Overall, the results showed that propolis extracts exert an anti-inflammatory effect by inhibition of pro-inflammatory cytokines and by metabolic reprogramming of LPS activity in macrophage cells, suggesting an immunomodulatory effect.
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Affiliation(s)
- Abdulmalik M Alqarni
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, UK.
- Department of Pharmaceutical Chemistry, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University (University of Dammam), Dammam 31441, Saudi Arabia.
| | - Kanidta Niwasabutra
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, UK.
| | - Muhamad Sahlan
- Faculty of Engineering, Universitas Indonesia Campus UI, Depok 16424, Indonesia.
| | - Hugo Fearnley
- Apiceutical Research Centre, 6 Hunter Street, Whitby, North Yorkshire YO21 3DA, UK.
| | - James Fearnley
- Apiceutical Research Centre, 6 Hunter Street, Whitby, North Yorkshire YO21 3DA, UK.
| | - Valerie A Ferro
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, UK.
| | - David G Watson
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, UK.
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Abstract
Macrophages are the primary targets of Mycobacterium tuberculosis infection; the early events of macrophage interaction with M. tuberculosis define subsequent progression and outcome of infection. M. tuberculosis can alter the innate immunity of macrophages, resulting in suboptimal Th1 immunity, which contributes to the survival, persistence, and eventual dissemination of the pathogen. Macrophages are the primary targets of Mycobacterium tuberculosis infection; the early events of macrophage interaction with M. tuberculosis define subsequent progression and outcome of infection. M. tuberculosis can alter the innate immunity of macrophages, resulting in suboptimal Th1 immunity, which contributes to the survival, persistence, and eventual dissemination of the pathogen. Recent advances in immunometabolism illuminate the intimate link between the metabolic states of immune cells and their specific functions. In this review, we describe the little-studied biphasic metabolic dynamics of the macrophage response during progression of infection by M. tuberculosis and discuss their relevance to macrophage immunity and M. tuberculosis pathogenicity. The early phase of macrophage infection, which is marked by M1 polarization, is accompanied by a metabolic switch from mitochondrial oxidative phosphorylation to hypoxia-inducible factor 1 alpha (HIF-1α)-mediated aerobic glycolysis (also known as the Warburg effect in cancer cells), as well as by an upregulation of pathways involving oxidative and antioxidative defense responses, arginine metabolism, and synthesis of bioactive lipids. These early metabolic changes are followed by a late adaptation/resolution phase in which macrophages transition from glycolysis to mitochondrial oxidative metabolism, with a consequent dampening of macrophage proinflammatory and antimicrobial responses. Importantly, the identification of upregulated metabolic pathways and/or metabolic regulatory mechanisms with immunomodulatory functions during M1 polarization has revealed novel mechanisms of M. tuberculosis pathogenicity. These advances can lead to the development of novel host-directed therapies to facilitate bacterial clearance in tuberculosis by targeting the metabolic state of immune cells.
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Noe JT, Mitchell RA. Tricarboxylic acid cycle metabolites in the control of macrophage activation and effector phenotypes. J Leukoc Biol 2019; 106:359-367. [DOI: 10.1002/jlb.3ru1218-496r] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 02/04/2019] [Accepted: 02/05/2019] [Indexed: 12/22/2022] Open
Affiliation(s)
- Jordan T. Noe
- Department of Biochemistry and Molecular GeneticsUniversity of Louisville Louisville Kentucky USA
- J.G. Brown Cancer CenterUniversity of Louisville Louisville Kentucky USA
| | - Robert A. Mitchell
- Department of Biochemistry and Molecular GeneticsUniversity of Louisville Louisville Kentucky USA
- J.G. Brown Cancer CenterUniversity of Louisville Louisville Kentucky USA
- Department of Microbiology and ImmunologyUniversity of Louisville Louisville Kentucky USA
- Department of MedicineUniversity of Louisville Louisville Kentucky USA
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Blanco-Pérez F, Goretzki A, Wolfheimer S, Schülke S. The vaccine adjuvant MPLA activates glycolytic metabolism in mouse mDC by a JNK-dependent activation of mTOR-signaling. Mol Immunol 2019; 106:159-169. [PMID: 30623816 DOI: 10.1016/j.molimm.2018.12.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 11/28/2018] [Accepted: 12/29/2018] [Indexed: 12/26/2022]
Abstract
INTRODUCTION The detoxified TLR4-ligand MPLA is a successfully used adjuvant in clinically approved vaccines. However, its capacity to activate glycolytic metabolism in mDC and the influence of MPLA-induced metabolic changes on cytokine secretion are unknown. AIM To analyze the capacity of MPLA to activate mDC metabolism and the mechanisms contributing to MPLA-induced metabolism activation and cytokine secretion. METHODS C57BL/6 bone-marrow-derived myeloid dendritic cells (mDCs) were stimulated with LPS or MPLA and analyzed for intracellular signaling, cytokine secretion, and metabolic state. mDC were pre-treated with rapamycin (mTOR-inhibitor), U0126, SP600125, SB202190 (MAPK kinase inhibitors), as well as dexamethasone (MAPK- and NFκB-inhibitor) and analyzed for MPLA-induced cytokine secretion and cell metabolic state. RESULTS Stimulation of mDCs with either LPS or MPLA resulted in a pronounced, mTOR-dependent activation of glucose metabolism characterized by induction of the Warburg Effect, increased glucose consumption from the culture medium, as well as release of LDH. Compared to LPS, MPLA induced significantly lower cytokine secretion. The activation of mDC metabolism was comparable between LPS- and MPLA-stimulated mDCs. The MPLA-induced cytokine secretion could be partially inhibited using mTOR-, MAP kinase-, and NFκB-inhibitors, whereas the activation of glucose metabolism was shown to depend on both mTOR- and JNK-signaling. SUMMARY The MPLA-induced activation of glycolytic metabolism in mouse mDC was shown to depend on a JNK-mediated activation of mTOR-signaling, while both MAPK- and NFB-signaling contributed to pro-inflammatory cytokine secretion. Understanding the mechanisms by which MPLA activates dendritic cells will both improve our understanding of its adjuvant properties and contribute to the future development and safe application of this promising adjuvant.
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Affiliation(s)
- Frank Blanco-Pérez
- Paul-Ehrlich-Institut, Vice President´s Research Group 1: Molecular Allergology, Langen, Germany
| | - Alexandra Goretzki
- Paul-Ehrlich-Institut, Vice President´s Research Group 1: Molecular Allergology, Langen, Germany
| | - Sonja Wolfheimer
- Paul-Ehrlich-Institut, Vice President´s Research Group 1: Molecular Allergology, Langen, Germany
| | - Stefan Schülke
- Paul-Ehrlich-Institut, Vice President´s Research Group 1: Molecular Allergology, Langen, Germany.
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Alqarni AM, Ferro VA, Parkinson JA, Dufton MJ, Watson DG. Effect of Melittin on Metabolomic Profile and Cytokine Production in PMA-Differentiated THP-1 Cells. Vaccines (Basel) 2018; 6:vaccines6040072. [PMID: 30322119 PMCID: PMC6313865 DOI: 10.3390/vaccines6040072] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 10/09/2018] [Accepted: 10/11/2018] [Indexed: 12/25/2022] Open
Abstract
Melittin, the major active peptide of honeybee venom (BV), has potential for use in adjuvant immunotherapy. The immune system response to different stimuli depends on the secretion of different metabolites from macrophages. One potent stimulus is lipopolysaccharide (LPS), a component isolated from gram-negative bacteria, which induces the secretion of pro-inflammatory cytokines in macrophage cell cultures. This secretion is amplified when LPS is combined with melittin. In the present study, pure melittin was isolated from whole BV by flash chromatography to obtain pure melittin. The ability of melittin to enhance the release of tumour necrosis factor-α (TNF-α), Interleukin (IL-1β, IL-6, and IL-10) cytokines from a macrophage cell line (THP-1) was then assessed. The response to melittin and LPS, applied alone or in combination, was characterised by metabolic profiling, and the metabolomics results were used to evaluate the potential of melittin as an immune adjuvant therapy. The addition of melittin enhanced the release of inflammatory cytokines induced by LPS. Effective chromatographic separation of metabolites was obtained by liquid chromatography-mass spectrometry (LC-MS) using a ZIC-pHILIC column and an ACE C4 column. The levels of 108 polar and non-polar metabolites were significantly changed (p ˂ 0.05) following cell activation by the combination of LPS and melittin when compared to untreated control cells. Overall, the findings of this study suggested that melittin might have a potential application as a vaccine adjuvant.
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Affiliation(s)
- Abdulmalik M Alqarni
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, UK.
| | - Valerie A Ferro
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, UK.
| | - John A Parkinson
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK.
| | - Mark J Dufton
- WestCHEM Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK.
| | - David G Watson
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, UK.
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Chen Y, Ouyang X, Hoque R, Garcia-Martinez I, Yousaf MN, Tonack S, Offermanns S, Dubuquoy L, Louvet A, Mathurin P, Massey V, Schnabl B, Bataller RA, Mehal WZ. β-Hydroxybutyrate protects from alcohol-induced liver injury via a Hcar2-cAMP dependent pathway. J Hepatol 2018; 69:687-696. [PMID: 29705237 PMCID: PMC6098974 DOI: 10.1016/j.jhep.2018.04.004] [Citation(s) in RCA: 48] [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: 09/26/2017] [Revised: 04/03/2018] [Accepted: 04/04/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Sterile inflammation resulting in alcoholic hepatitis (AH) occurs unpredictably after many years of excess alcohol intake. The factors responsible for the development of AH are not known but mitochondrial damage with loss of mitochondrial function are common features. Hcar2 is a G-protein coupled receptor which is activated by β-hydroxybutyrate (BHB). We aimed to determine the relevance of the BHB-Hcar2 pathway in alcoholic liver disease. METHODS We tested if loss of BHB production can result in increased liver inflammation. We further tested if BHB supplementation is protective in AH through interaction with Hcar2, and analyzed the immune and cellular basis for protection. RESULTS Humans with AH have reduced hepatic BHB, and inhibition of BHB production in mice aggravated ethanol-induced AH, with higher plasma alanine aminotransferase levels, increased steatosis and greater neutrophil influx. Conversely supplementation of BHB had the opposite effects with reduced alanine aminotransferase levels, reduced steatosis and neutrophil influx. This therapeutic effect of BHB is dependent on the receptor Hcar2. BHB treatment increased liver Il10 transcripts, and promoted the M2 phenotype of intrahepatic macrophages. BHB also increased the transcriptional level of M2 related genes in vitro bone marrow derived macrophages. This skewing towards M2 related genes is dependent on lower mitochondrial membrane potential (Δψ) induced by BHB. CONCLUSIONS Collectively, our data shows that BHB production during excess alcohol consumption has an anti-inflammatory and hepatoprotective role through an Hcar2 dependent pathway. This introduces the concept of metabolite-based therapy for AH. LAY SUMMARY Alcoholic hepatitis is a life-threatening condition with no approved therapy that occurs unexpectedly in people who consume excess alcohol. The liver makes many metabolites, and we demonstrate that loss of one such metabolite β-hydroxybutyrate occurs in patients with alcoholic hepatitis. This loss can increase alcohol-induced liver injury, and β-hydroxybutyrate can protect from alcohol-induced liver injury via a receptor on liver macrophages. This opens the possibility of metabolite-based therapy for alcoholic hepatitis.
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Affiliation(s)
- Yonglin Chen
- Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Xinshou Ouyang
- Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Rafaz Hoque
- Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Irma Garcia-Martinez
- Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Muhammad Nadeem Yousaf
- Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Sarah Tonack
- Max-Planck-Institute for Heart and Lung Research, Department of Pharmacology, Ludwigstr. 43, 61231 Bad Nauheim, Germany; Medical Faculty, J.W. Goethe University Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | - Stefan Offermanns
- Max-Planck-Institute for Heart and Lung Research, Department of Pharmacology, Ludwigstr. 43, 61231 Bad Nauheim, Germany; Medical Faculty, J.W. Goethe University Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt, Germany
| | | | - Alexandre Louvet
- Service des Maladies de l'appareil digestif, Hôpital Huriez, Lille, France; Unité INSERM 995, Faculté de Médecine, Lille, France
| | - Philippe Mathurin
- Service des Maladies de l'appareil digestif, Hôpital Huriez, Lille, France; Unité INSERM 995, Faculté de Médecine, Lille, France
| | - Veronica Massey
- School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Bernd Schnabl
- Department of Medicine, University of California San Diego, La Jolla, CA, USA
| | - Ramon Alberola Bataller
- Division of Gastroenterology, Hepatology and Nutrition, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Wajahat Zafar Mehal
- Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT 06520, USA; USA West Haven Veterans Medical Center, West Haven, CT 06516, USA.
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Sulistyowati E, Lee MY, Wu LC, Hsu JH, Dai ZK, Wu BN, Lin MC, Yeh JL. Exogenous Heat Shock Cognate Protein 70 Suppresses LPS-Induced Inflammation by Down-Regulating NF-κB through MAPK and MMP-2/-9 Pathways in Macrophages. Molecules 2018; 23:molecules23092124. [PMID: 30142934 PMCID: PMC6225271 DOI: 10.3390/molecules23092124] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 08/21/2018] [Accepted: 08/21/2018] [Indexed: 12/19/2022] Open
Abstract
Heat shock cognate protein 70 (HSC70), a molecular chaperone, is constitutively expressed by mammalian cells to regulate various cellular functions. It is associated with many diseases and is a potential therapeutic target. Although HSC70 also possesses an anti-inflammatory action, the mechanism of this action remains unclear. This current study aimed to assess the anti-inflammatory effects of HSC70 in murine macrophages RAW 264.7 exposed to lipopolysaccharides (LPS) and to explain its pathways. Mouse macrophages (RAW 264.7) in 0.1 µg/mL LPS incubation were pretreated with recombinant HSC70 (rHSC70) and different assays (Griess assay, enzyme-linked immune assay/ELISA, electrophoretic mobility shift assay/EMSA, gelatin zymography, and Western blotting) were performed to determine whether rHSC70 blocks pro-inflammatory mediators. The findings showed that rHSC70 attenuated the nitric oxide (NO) generation, tumor necrosis factor α (TNF-α) and interleukin 6 (IL-6) expressions in LPS-stimulated RAW264.7 cells. In addition, rHSC70 preconditioning suppressed the activities and expressions of matrix metalloproteinase-2 (MMP-2) and MMP-9. Finally, rHSC70 diminished the nuclear translocation of nuclear factor-κB (NF-κB) and reduced the phosphorylation of extracellular-signal regulated kinases 1/2 (ERK1/2), c-Jun N-terminal kinase (JNK), p38 mitogen-activated protein kinases (MAPK), and phosphatidylinositol-3-kinase (PI3K/Akt). We demonstrate that rHSC70 preconditioning exerts its anti-inflammatory effects through NO production constriction; TNF-α, and IL-6 suppression following down-regulation of inducible nitric oxide synthase (iNOS), cyclooxygenase 2 (COX-2), and MMP-2/MMP-9. Accordingly, it ameliorated the signal transduction of MAPKs, Akt/IκBα, and NF-κB pathways. Therefore, extracellular HSC70 plays a critical role in the innate immunity modulation and mechanisms of endogenous protective stimulation.
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Affiliation(s)
- Erna Sulistyowati
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Faculty of Medicine, Islamic University of Malang, East Java 65145, Indonesia.
| | - Mei-Yueh Lee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
- Department of Internal Medicine, Kaohsiung Municipal Hsiaokang Hospital, Kaohsiung 812, Taiwan.
| | - Lin-Chi Wu
- Department of Pharmacology, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Jong-Hau Hsu
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Pediatrics, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Pediatrics, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
| | - Zen-Kong Dai
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Pediatrics, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Pediatrics, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
| | - Bin-Nan Wu
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Pharmacology, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Ming-Chung Lin
- Department of Anesthesiology, Chi Mei Medical Center, Liouying, Tainan 736, Taiwan.
| | - Jwu-Lai Yeh
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Pharmacology, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
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Decano JL, Aikawa M. Dynamic Macrophages: Understanding Mechanisms of Activation as Guide to Therapy for Atherosclerotic Vascular Disease. Front Cardiovasc Med 2018; 5:97. [PMID: 30123798 PMCID: PMC6086112 DOI: 10.3389/fcvm.2018.00097] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 07/02/2018] [Indexed: 12/13/2022] Open
Abstract
An emerging theory is that macrophages are heterogenous; an attribute that allows them to change behavior and execute specific functions in disease processes. This review aims to describe the current understanding on factors that govern their phenotypic changes, and provide insights for intervention beyond managing classical risk factors. Evidence suggests that metabolic reprogramming of macrophages triggers either a pro-inflammatory, anti-inflammatory or pro-resolving behavior. Dynamic changes in bioenergetics, metabolome or influence from bioactive lipids may promote resolution or aggravation of inflammation. Direct cell-to-cell interactions with other immune cells can also influence macrophage activation. Both paracrine signaling and intercellular molecular interactions either co-stimulate or co-inhibit activation of macrophages as well as their paired immune cell collaborator. More pathways of activation can even be uncovered by inspecting macrophages in the single cell level, since differential expression in key gene regulators can be screened in higher resolution compared to conventional averaged gene expression readouts. All these emerging macrophage activation mechanisms may be further explored and consolidated by using approaches in network biology. Integrating these insights can unravel novel and safer drug targets through better understanding of the pro-inflammatory activation circuitry.
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Affiliation(s)
- Julius L. Decano
- Center for Interdisciplinary Cardiovascular Sciences, Division of Cardiovascular Medicine, Department of Medicine, Brigham Women's Hospital, Harvard Medical School, Boston, MA, United States
| | - Masanori Aikawa
- Center for Interdisciplinary Cardiovascular Sciences, Division of Cardiovascular Medicine, Department of Medicine, Brigham Women's Hospital, Harvard Medical School, Boston, MA, United States
- Center for Excellence in Vascular Biology, Division of Cardiovascular Medicine, Department of Medicine, Brigham Women's Hospital, Harvard Medical School, Boston, MA, United States
- Channing Division of Network Medicine, Department of Medicine, Brigham Women's Hospital, Harvard Medical School, Boston, MA, United States
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49
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Saha S, Shalova IN, Biswas SK. Metabolic regulation of macrophage phenotype and function. Immunol Rev 2018; 280:102-111. [PMID: 29027220 DOI: 10.1111/imr.12603] [Citation(s) in RCA: 146] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Studies in the last 20 years have given us a remarkable insight into the functional and phenotypic diversity of macrophages which reflects their integral role in host defence, homeostasis and pathogenesis. Mouse genetics, transcriptomic and epigenetic studies have provided an ontogenic and molecular perspective to the phenotypic diversity of these cells. Recently, metabolic studies have revealed the crucial role of metabolism and metabolites in shaping the phenotype and function of macrophages. Evidence pertaining to this aspect will be reviewed here.
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Affiliation(s)
- Shilpi Saha
- Singapore Immunology Network (SIgN), Agency for Science, Technology & Research (A*STAR), Singapore
| | - Irina N Shalova
- Singapore Immunology Network (SIgN), Agency for Science, Technology & Research (A*STAR), Singapore
| | - Subhra K Biswas
- Singapore Immunology Network (SIgN), Agency for Science, Technology & Research (A*STAR), Singapore
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50
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Metabolic Reprogramming and Redox Signaling in Pulmonary Hypertension. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 967:241-260. [PMID: 29047090 DOI: 10.1007/978-3-319-63245-2_14] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Pulmonary hypertension is a complex disease of the pulmonary vasculature, which in severe cases terminates in right heart failure. Complex remodeling of pulmonary arteries comprises the central issue of its pathology. This includes extensive proliferation, apoptotic resistance and inflammation. As such, the molecular and cellular features of pulmonary hypertension resemble hallmark characteristics of cancer cell behavior. The vascular remodeling derives from significant metabolic changes in resident cells, which we describe in detail. It affects not only cells of pulmonary artery wall, but also its immediate microenvironment involving cells of immune system (i.e., macrophages). Thus aberrant metabolism constitutes principle component of the cancer-like theory of pulmonary hypertension. The metabolic changes in pulmonary artery cells resemble the cancer associated Warburg effect, involving incomplete glucose oxidation through aerobic glycolysis with depressed mitochondrial catabolism enabling the fueling of anabolic reactions with amino acids, nucleotides and lipids to sustain proliferation. Macrophages also undergo overlapping but distinct metabolic reprogramming inducing specific activation or polarization states that enable their participation in the vascular remodeling process. Such metabolic synergy drives chronic inflammation further contributing to remodeling. Enhanced glycolytic flux together with suppressed mitochondrial bioenergetics promotes the accumulation of reducing equivalents, NAD(P)H. We discuss the enzymes and reactions involved. The reducing equivalents modulate the regulation of proteins using NAD(P)H as the transcriptional co-repressor C-terminal binding protein 1 cofactor and significantly impact redox status (through GSH, NAD(P)H oxidases, etc.), which together act to control the phenotype of the cells of pulmonary arteries. The altered mitochondrial metabolism changes its redox poise, which together with enhanced NAD(P)H oxidase activity and reduced enzymatic antioxidant activity promotes a pro-oxidative cellular status. Herein we discuss all described metabolic changes along with resultant alterations in redox status, which result in excessive proliferation, apoptotic resistance, and inflammation, further leading to pulmonary arterial wall remodeling and thus establishing pulmonary artery hypertension pathology.
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