151
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Zhang YM, Shen J, Zhao JM, Guan J, Wei XR, Miao DY, Li W, Xie YC, Zhao YQ. Cedrol from Ginger Ameliorates Rheumatoid Arthritis via Reducing Inflammation and Selectively Inhibiting JAK3 Phosphorylation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:5332-5343. [PMID: 33908779 DOI: 10.1021/acs.jafc.1c00284] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Ginger, as a food spice, is widely applied due to its extensive effects. Cedrol (CE) found in ginger is a sesquiterpene with anti-inflammatory activity. The objective of this research is to discuss the efficacy of CE on ameliorating rheumatoid arthritis (RA). CE inhibited chronic inflammation and pain in a dose-dependent manner accompanied by rapid onset and long duration. Besides, CE treatment effectively ameliorated the paw edema volume and arthritis score with no significant effect on body weight. Organ index, T-cell and B-cell proliferation, histopathology, and immunohistochemistry demonstrated that CE had immunological enhancement and attenuated RA effects. Remarkably, inhibition of phosphorylated-JAK3 protein, thereby abating the secretion of pro-inflammatory cytokines and inflammation-related mediators, was involved in the potential mechanism of CE efficiency through forming a hydrogen bond with ARG953 and ILE955 in the JAK3 active pocket. At the same time, the pharmacokinetic results showed that the absolute bioavailability of CE at 20, 40, and 80 mg/kg was 30.30, 23.68, and 16.11%, respectively. The current results offered clues for mastering the ameliorated RA of CE and further perfected the effective substance basis on the anti-inflammatory effect of ginger, which was beneficial for further applications.
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Affiliation(s)
- Yu-Meng Zhang
- Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Jian Shen
- Zhejiang Respiratory Drugs Research Laboratory of State Food and Drug Administration of China, Zhejiang University, Hangzhou 310000, China
| | - Jun-Ming Zhao
- Liaoning Xinzhong Modern Medicine Company Ltd., Shenyang 110016, China
| | - Jian Guan
- Liaoning Xinzhong Modern Medicine Company Ltd., Shenyang 110016, China
| | - Xin-Rui Wei
- Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Dong-Yu Miao
- Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Wei Li
- Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yi-Cheng Xie
- Zhejiang Respiratory Drugs Research Laboratory of State Food and Drug Administration of China, Zhejiang University, Hangzhou 310000, China
| | - Yu-Qing Zhao
- Shenyang Pharmaceutical University, Shenyang 110016, China
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152
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Zhu P, Hou Y, Tang M, Jin Z, Yu Y, Li D, Yan D, Dong Z. The role of HIF-1α in BCG-stimulated macrophages polarization and their tumoricidal effects in vitro. Med Microbiol Immunol 2021; 210:149-156. [PMID: 33974122 DOI: 10.1007/s00430-021-00708-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 04/04/2021] [Indexed: 11/27/2022]
Abstract
BCG is widely used for cancer treatment, where macrophages play an important role. However, the mechanism of BCG affecting macrophages remains poorly understood. In this study, we used BCG to stimulate myeloid-derived macrophages lacking HIF-1α, the levels of TNF-α, IL-1β, CD86 of macrophages and their effects on the growth of tumor cells MCA207 and B16-F10 were detected. We found that the absence of HIF-1α prevents BCG-stimulated macrophages from polarizing towards the M (BCG) and attenuating its killing effect on tumor cells. In addition, we demonstrated that the tumors of mice lacking HIF-1α in macrophages were significantly increased by the experiment of mice transplantation. Our study provides relevant evidence for exploring the mechanism of the BCG vaccine in the prevention and treatment of related diseases.
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Affiliation(s)
- Pei Zhu
- Department of Immunology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Yuyang Hou
- Department of Immunology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Mengyan Tang
- Department of Immunology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Zheng Jin
- Department of Immunology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Youran Yu
- Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Dong Li
- Department of Immunology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Dongmei Yan
- Department of Immunology, College of Basic Medical Sciences, Jilin University, Changchun, China.
| | - Zehua Dong
- Department of critical care medicine, The Affiliated Hospital of Qingdao University, Qingdao, China.
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153
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Candida Administration in Bilateral Nephrectomy Mice Elevates Serum (1→3)-β-D-glucan That Enhances Systemic Inflammation Through Energy Augmentation in Macrophages. Int J Mol Sci 2021; 22:ijms22095031. [PMID: 34068595 PMCID: PMC8126065 DOI: 10.3390/ijms22095031] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/18/2021] [Accepted: 04/29/2021] [Indexed: 12/15/2022] Open
Abstract
Systemic inflammation, from gut translocation of organismal molecules, might worsen uremic complications in acute kidney injury (AKI). The monitoring of gut permeability integrity and/or organismal molecules in AKI might be clinically beneficial. Due to the less prominence of Candida albicans in human intestine compared with mouse gut, C. albicans were orally administered in bilateral nephrectomy (BiN) mice. Gut dysbiosis, using microbiome analysis, and gut permeability defect (gut leakage), which was determined by fluorescein isothiocyanate-dextran and intestinal tight-junction immunofluorescent staining, in mice with BiN-Candida was more severe than BiN without Candida. Additionally, profound gut leakage in BiN-Candida also resulted in gut translocation of lipopolysaccharide (LPS) and (1→3)-β-D-glucan (BG), the organismal components from gut contents, that induced more severe systemic inflammation than BiN without Candida. The co-presentation of LPS and BG in mouse serum enhanced inflammatory responses. As such, LPS with Whole Glucan Particle (WGP, a representative BG) induced more severe macrophage responses than LPS alone as determined by supernatant cytokines and gene expression of downstream signals (NFκB, Malt-1 and Syk). Meanwhile, WGP alone did not induced the responses. In parallel, WGP (with or without LPS), but not LPS alone, accelerated macrophage ATP production (extracellular flux analysis) through the upregulation of genes in mitochondria and glycolysis pathway (using RNA sequencing analysis), without the induction of cell activities. These data indicated a WGP pre-conditioning effect on cell energy augmentation. In conclusion, Candida in BiN mice accelerated gut translocation of BG that augmented cell energy status and enhanced pro-inflammatory macrophage responses. Hence, gut fungi and BG were associated with the enhanced systemic inflammation in acute uremia.
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154
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Macrophage Exosomes Resolve Atherosclerosis by Regulating Hematopoiesis and Inflammation via MicroRNA Cargo. Cell Rep 2021; 32:107881. [PMID: 32668250 PMCID: PMC8143919 DOI: 10.1016/j.celrep.2020.107881] [Citation(s) in RCA: 122] [Impact Index Per Article: 40.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 05/12/2020] [Accepted: 06/12/2020] [Indexed: 12/18/2022] Open
Abstract
Developing strategies that promote the resolution of vascular inflammation and atherosclerosis remains a major therapeutic challenge. Here, we show that exosomes produced by naive bone marrow-derived macrophages (BMDM-exo) contain anti-inflammatory microRNA-99a/146b/378a that are further increased in exosomes produced by BMDM polarized with IL-4 (BMDM-IL-4-exo). These exosomal microRNAs suppress inflammation by targeting NF-κB and TNF-α signaling and foster M2 polarization in recipient macrophages. Repeated infusions of BMDM-IL-4-exo into Apoe−/− mice fed a Western diet reduce excessive hematopoiesis in the bone marrow and thereby the number of myeloid cells in the circulation and macrophages in aortic root lesions. This also leads to a reduction in necrotic lesion areas that collectively stabilize atheroma. Thus, BMDM-IL-4-exo may represent a useful therapeutic approach for atherosclerosis and other inflammatory disorders by targeting NF-κB and TNF-α via microRNA cargo delivery. Anti-inflammatory properties of M2 macrophages can be communicated as miRNA packaged into exosomes. Bouchareychas et al. show that when tested in the Apoe−/− mouse model of hyperlipidemia, M2 macrophage exosomes reduced hematopoiesis and the inflammatory state of circulating monocytes and macrophages in atherosclerotic plaques.
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155
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Mehta AK, Kadel S, Townsend MG, Oliwa M, Guerriero JL. Macrophage Biology and Mechanisms of Immune Suppression in Breast Cancer. Front Immunol 2021; 12:643771. [PMID: 33968034 PMCID: PMC8102870 DOI: 10.3389/fimmu.2021.643771] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 02/17/2021] [Indexed: 12/14/2022] Open
Abstract
Macrophages are crucial innate immune cells that maintain tissue homeostasis and defend against pathogens; however, their infiltration into tumors has been associated with adverse outcomes. Tumor-associated macrophages (TAMs) represent a significant component of the inflammatory infiltrate in breast tumors, and extensive infiltration of TAMs has been linked to poor prognosis in breast cancer. Here, we detail how TAMs impede a productive tumor immunity cycle by limiting antigen presentation and reducing activation of cytotoxic T lymphocytes (CTLs) while simultaneously supporting tumor cell survival, angiogenesis, and metastasis. There is an urgent need to overcome TAM-mediated immune suppression for durable anti-tumor immunity in breast cancer. To date, failure to fully characterize TAM biology and classify multiple subsets has hindered advancement in therapeutic targeting. In this regard, the complexity of TAMs has recently taken center stage owing to their subset diversity and tightly regulated molecular and metabolic phenotypes. In this review, we reveal major gaps in our knowledge of the functional and phenotypic characterization of TAM subsets associated with breast cancer, before and after treatment. Future work to characterize TAM subsets, location, and crosstalk with neighboring cells will be critical to counteract TAM pro-tumor functions and to identify novel TAM-modulating strategies and combinations that are likely to enhance current therapies and overcome chemo- and immuno-therapy resistance.
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Affiliation(s)
- Anita K Mehta
- Breast Tumor Immunology Laboratory, Dana-Farber Cancer Institute, Boston, MA, United States.,Division of Breast Surgery, Department of Surgery, Brigham and Women's Hospital, Boston, MA, United States
| | - Sapana Kadel
- Breast Tumor Immunology Laboratory, Dana-Farber Cancer Institute, Boston, MA, United States
| | - Madeline G Townsend
- Breast Tumor Immunology Laboratory, Dana-Farber Cancer Institute, Boston, MA, United States.,Division of Breast Surgery, Department of Surgery, Brigham and Women's Hospital, Boston, MA, United States
| | - Madisson Oliwa
- Breast Tumor Immunology Laboratory, Dana-Farber Cancer Institute, Boston, MA, United States.,Division of Breast Surgery, Department of Surgery, Brigham and Women's Hospital, Boston, MA, United States
| | - Jennifer L Guerriero
- Breast Tumor Immunology Laboratory, Dana-Farber Cancer Institute, Boston, MA, United States.,Division of Breast Surgery, Department of Surgery, Brigham and Women's Hospital, Boston, MA, United States
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156
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Positron Emission Tomography Imaging of Macrophages in Cancer. Cancers (Basel) 2021; 13:cancers13081921. [PMID: 33923410 PMCID: PMC8072570 DOI: 10.3390/cancers13081921] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/13/2021] [Accepted: 04/13/2021] [Indexed: 12/14/2022] Open
Abstract
Macrophages are large phagocytic cells that can be classified as a type of white blood cell and may be either mobile or stationary in tissues. The presence of macrophages in essentially every major disease makes them attractive candidates to serve as therapeutic targets and diagnostic biomarkers. Macrophages that are found in the microenvironment of solid tumors are referred to as tumor-associated macrophages (TAMs) and have been shown to influence chemoresistance, immune regulation, tumor initiation and tumor growth. The imaging of TAMs through Positron Emission Tomography (PET) has the potential to provide valuable information on cancer biology, tumor progression, and response to therapy. This review will highlight the versatility of macrophage imaging in cancer through the use of PET.
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157
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Wang Y, Li X, Chen Q, Jiao F, Shi C, Pei M, Wang L, Gong Z. Histone Deacetylase 6 Regulates the Activation of M1 Macrophages by the Glycolytic Pathway During Acute Liver Failure. J Inflamm Res 2021; 14:1473-1485. [PMID: 33883923 PMCID: PMC8055295 DOI: 10.2147/jir.s302391] [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] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 03/18/2021] [Indexed: 12/19/2022] Open
Abstract
Background The glycolysis pathway of M1 macrophages is a key factor affecting the inflammatory response. The aim of this article is to investigate the role of histone deacetylase 6 (HDAC6) in the M1 macrophage glycolysis pathway during acute liver failure (ALF). Methodology Targeted metabolomics for quantitative analysis of energy metabolites technology was used to detect the characteristics of energy metabolism for 8 ALF patients and 8 normal volunteers. The ALF mice model was intervened with HDAC6 inhibitor ACY-1215. iTRAQ/TMT quantitative proteomics was used to detect protein expression in livers in different mice groups. The liver function, energy metabolites, M1 macrophages, cytokines, and pathological structure, DDX3X, NLRP3 and DNMT1 in liver tissue were detected. The changes of the above molecules were verified in cell groups. Results ALF patients and mice have significant energy metabolism disorders, accompanied by activation of M1 macrophages. After the intervention of ACY-1215, the activated M1 macrophages and cytokines levels in the mouse liver were reduced. The levels of IDH1, MDH1, and ATP were significantly increased. The expression of DDX3X increased, while the expression of NLRP3 and DNMT1 decreased. ACY-1215 could reduce the model cell apoptosis level and inflammatory response, and improve energy metabolism. It could also promote the expression of DDX3X, and inhibit the expression of NLRP3 and DNMT1. Conclusion ACY-1215 could inhibit the activation of M1 macrophages by improving the glycolytic pathway through regulating DNMT1 and DDX3X/NLRP3 signals to alleviate ALF.
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Affiliation(s)
- Yao Wang
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan, 430060, People's Republic of China
| | - Xun Li
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan, 430060, People's Republic of China
| | - Qian Chen
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan, 430060, People's Republic of China
| | - Fangzhou Jiao
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan, 430060, People's Republic of China
| | - Chunxia Shi
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan, 430060, People's Republic of China
| | - Maohua Pei
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan, 430060, People's Republic of China
| | - Luwen Wang
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan, 430060, People's Republic of China
| | - Zuojiong Gong
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan, 430060, People's Republic of China
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158
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Chen W, Wang Q, Zhou B, Zhang L, Zhu H. Lipid Metabolism Profiles in Rheumatic Diseases. Front Pharmacol 2021; 12:643520. [PMID: 33897433 PMCID: PMC8064727 DOI: 10.3389/fphar.2021.643520] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 02/18/2021] [Indexed: 12/25/2022] Open
Abstract
Rheumatic diseases are a group of chronic autoimmune disorders that involve multiple organs or systems and have high mortality. The mechanisms of these diseases are still ill-defined, and targeted therapeutic strategies are still challenging for physicians. Recent research indicates that cell metabolism plays important roles in the pathogenesis of rheumatic diseases. In this review, we mainly focus on lipid metabolism profiles (dyslipidaemia, fatty acid metabolism) and mechanisms in rheumatic diseases and discuss potential clinical applications based on lipid metabolism profiles.
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Affiliation(s)
- Weilin Chen
- Department of Rheumatology, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China.,Provincial Clinical Research Center for Rheumatic and Immunologic Diseases, Xiangya Hospital, Changsha, China
| | - Qi Wang
- Department of Radiology, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, China
| | - Bin Zhou
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Lihua Zhang
- Department of Rheumatology, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, China
| | - Honglin Zhu
- Department of Rheumatology, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China.,Provincial Clinical Research Center for Rheumatic and Immunologic Diseases, Xiangya Hospital, Changsha, China
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159
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Buicu AL, Cernea S, Benedek I, Buicu CF, Benedek T. Systemic Inflammation and COVID-19 Mortality in Patients with Major Noncommunicable Diseases: Chronic Coronary Syndromes, Diabetes and Obesity. J Clin Med 2021; 10:jcm10081545. [PMID: 33916917 PMCID: PMC8067631 DOI: 10.3390/jcm10081545] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 03/25/2021] [Accepted: 03/27/2021] [Indexed: 02/07/2023] Open
Abstract
COVID-19 is currently considered an inflammatory disease affecting the entire organism. In severe forms, an augmented inflammatory response leads to the fulminant “cytokine storm”, which may result in severe multisystemic end-organ damage. Apart from the acute inflammatory response, it seems that chronic inflammation also plays a major role in the clinical evolution of COVID-19 patients. Pre-existing inflammatory conditions, such as those associated with chronic coronary diseases, type 2 diabetes mellitus or obesity, may be associated with worse clinical outcomes in the context of COVID-19 disease. These comorbidities are reported as powerful predictors of poor outcomes and death following COVID-19 disease. Moreover, in the context of chronic coronary syndrome, the cytokine storm triggered by SARS-CoV-2 infection may favor vulnerabilization and rupture of a silent atheromatous plaque, with consequent acute coronary syndrome, leading to a sudden deterioration of the clinical condition of the patient. This review aims to present the current status of knowledge regarding the link between COVID-19 mortality, systemic inflammation and several major diseases associated with poor outcomes, such as cardiovascular diseases, diabetes and obesity.
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Affiliation(s)
- Andreea-Luciana Buicu
- Doctoral School, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureş, 540139 Târgu Mureș, Romania;
| | - Simona Cernea
- Department M3/Internal Medicine I, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureş, 38 Gheorghe Marinescu street, 540139 Târgu Mureș, Romania
- Diabetes, Nutrition and Metabolic Diseases Outpatient Unit, Emergency County Clinical Hospital, 540136 Târgu Mureș, Romania
- Correspondence: or
| | - Imre Benedek
- Clinical Department of Internal Medicine, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureş, 540139 Târgu Mureș, Romania; (I.B.); (T.B.)
- Clinic of Cardiology, Emergency County Clinical Hospital, 540136 Târgu Mureș, Romania
| | - Corneliu-Florin Buicu
- Public Health and Management Department, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureş, 540139 Târgu Mureș, Romania;
| | - Theodora Benedek
- Clinical Department of Internal Medicine, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureş, 540139 Târgu Mureș, Romania; (I.B.); (T.B.)
- Clinic of Cardiology, Emergency County Clinical Hospital, 540136 Târgu Mureș, Romania
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160
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Diaz F, Raval AP. Simultaneous nicotine and oral contraceptive exposure alters brain energy metabolism and exacerbates ischemic stroke injury in female rats. J Cereb Blood Flow Metab 2021; 41:793-804. [PMID: 32538281 PMCID: PMC7983508 DOI: 10.1177/0271678x20925164] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Smoking-derived nicotine (N) and oral contraceptives (OC) synergistically exacerbate ischemic brain damage in the females and underlying mechanisms remain elusive. Our published study showed that N toxicity is exacerbated by OC via altered mitochondrial function owing to a defect in the activity of cytochrome c oxidase. Here, we investigated the global metabolomic profile of brains of adolescent female Sprague-Dawley rats exposed to N ± OC. Rats were randomly exposed to saline or N + /-OC for 16-21 days followed by random allocation into two cohorts. One cohort underwent transient middle cerebral artery occlusion and histopathology was performed 30 days later. From the second cohort, cortical tissues were collected for an unbiased global metabolomic profile. Pathway enrichment analysis showed significant decrease in glucose, glucose 6-phosphate and fructose-6-phosphate, along with a significant increase in pyruvate in the N + /-OC exposed groups when compared to saline (p < 0.05), suggesting alterations in the glycolytic pathway which were confirmed by Western blot analyses of glycolytic enzymes. Infarct volume quantification showed a significant increase following N alone or N + OC as compared to saline control. Because glucose metabolism is critical for brain physiology, altered glycolysis deteriorates neural function, thus exacerbating ischemic brain damage.
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Affiliation(s)
- Francisca Diaz
- Department of Neurology, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Ami P Raval
- Department of Neurology, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA.,Peritz Scheinberg Cerebral Vascular Disease Research Laboratory, Department of Neurology, Leonard M. Miller School of Medicine, University of Miami, Miami, FL, USA
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161
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Yao Y, Cai X, Ren F, Ye Y, Wang F, Zheng C, Qian Y, Zhang M. The Macrophage-Osteoclast Axis in Osteoimmunity and Osteo-Related Diseases. Front Immunol 2021; 12:664871. [PMID: 33868316 PMCID: PMC8044404 DOI: 10.3389/fimmu.2021.664871] [Citation(s) in RCA: 99] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Accepted: 03/17/2021] [Indexed: 12/11/2022] Open
Abstract
Osteoimmunity is involved in regulating the balance of bone remodeling and resorption, and is essential for maintaining normal bone morphology. The interaction between immune cells and osteoclasts in the bone marrow or joint cavity is the basis of osteoimmunity, in which the macrophage-osteoclast axis plays a vital role. Monocytes or tissue-specific macrophages (macrophages resident in tissues) are an important origin of osteoclasts in inflammatory and immune environment. Although there are many reports on macrophages and osteoclasts, there is still a lack of systematic reviews on the macrophage-osteoclast axis in osteoimmunity. Elucidating the role of the macrophage-osteoclast axis in osteoimmunity is of great significance for the research or treatment of bone damage caused by inflammation and immune diseases. In this article, we introduced in detail the concept of osteoimmunity and the mechanism and regulators of the differentiation of macrophages into osteoclasts. Furthermore, we described the role of the macrophage-osteoclast axis in typical bone damage caused by inflammation and immune diseases. These provide a clear knowledge framework for studying macrophages and osteoclasts in inflammatory and immune environments. And targeting the macrophage-osteoclast axis may be an effective strategy to treat bone damage caused by inflammation and immune diseases.
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Affiliation(s)
- Yao Yao
- Department of Pharmacy, Women's Hospital School of Medicine Zhejiang University, Hangzhou, China
| | - Xiaoyu Cai
- Department of Clinical Pharmacology, Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research of Zhejiang Province, Affiliated Hangzhou First People's Hospital, Cancer Center, Zhejiang University School of Medicine, Hangzhou, China
| | - Fujia Ren
- Department of Pharmacy, Hangzhou Women's Hospital, Hangzhou, China
| | - Yiqing Ye
- Department of Pharmacy, Women's Hospital School of Medicine Zhejiang University, Hangzhou, China
| | - Fengmei Wang
- Department of Pharmacy, Women's Hospital School of Medicine Zhejiang University, Hangzhou, China
| | - Caihong Zheng
- Department of Pharmacy, Women's Hospital School of Medicine Zhejiang University, Hangzhou, China
| | - Ying Qian
- Department of Pharmacy, Women's Hospital School of Medicine Zhejiang University, Hangzhou, China
| | - Meng Zhang
- Department of Pharmacy, Women's Hospital School of Medicine Zhejiang University, Hangzhou, China
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162
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Zhuang H, Lv Q, Zhong C, Cui Y, He L, Zhang C, Yu J. Tiliroside Ameliorates Ulcerative Colitis by Restoring the M1/M2 Macrophage Balance via the HIF-1α/glycolysis Pathway. Front Immunol 2021; 12:649463. [PMID: 33868286 PMCID: PMC8044352 DOI: 10.3389/fimmu.2021.649463] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 03/10/2021] [Indexed: 12/21/2022] Open
Abstract
Macrophages polarized to different phenotypes critically contribute to colitis development by coordinating inflammatory and anti-inflammatory processes. Herein, targeting the balance between the pro-inflammatory M1 and the anti-inflammatory M2 macrophage phenotypes can be a novel therapeutic approach for colitis. In the present study, we firstly demonstrated that tiliroside possessed the ability to alleviate the clinical symptoms of colitis as evidenced by decreased disease activity index (DAI) scores, longer colon length, reduced myeloperoxidase (MPO) activity, and improvement of colonic pathological damage in vivo. Furthermore, we showed that tiliroside modulated the balance between M1 and M2 macrophages toward a more anti-inflammatory status in colonic lamina propria but has little effect on the T cell population and epithelial barrier function in colitis mice. The macrophage depletion study further showed the protective effect of tiliroside was macrophage dependent in vivo. Mechanistically, our study demonstrated that tiliroside regulated cellular metabolism by inhibiting aerobic glycolysis in LPS and IFNγ stimulated macrophages. At the molecular level, tiliroside facilitated the proteasomal degradation of HIF-1α and downregulated mRNA expressions of HIF-1α dependent glycolytic enzymes in macrophages. Collectively, our data highlight the aberrant M1/M2 macrophage polarization in the initiation and development of ulcerative colitis and put forth the stage for considering tiliroside as a metabolic regulator in reprogramming macrophage polarization, which may serve as a promising therapeutic approach for treatment of inflammation-associated and metabolic disorders.
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Affiliation(s)
- Hongda Zhuang
- Translational Medicine Centre, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Qi Lv
- Translational Medicine Centre, Jiangxi University of Traditional Chinese Medicine, Nanchang, China.,Jiangsu Key Laboratory for Functional Substance of Chinese Medicine, Stake Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Chao Zhong
- Translational Medicine Centre, Jiangxi University of Traditional Chinese Medicine, Nanchang, China.,Center for Metabolic Disease Research and Department of Physiology, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States
| | - Yaru Cui
- Translational Medicine Centre, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Luling He
- Translational Medicine Centre, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Cheng Zhang
- Center for Metabolic Disease Research and Department of Physiology, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States
| | - Jun Yu
- Center for Metabolic Disease Research and Department of Physiology, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States
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163
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A Distinct Cytokine Profile and Stromal Vascular Fraction Metabolic Status without Significant Changes in the Lipid Composition Characterizes Lipedema. Int J Mol Sci 2021; 22:ijms22073313. [PMID: 33805070 PMCID: PMC8036495 DOI: 10.3390/ijms22073313] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/20/2021] [Accepted: 03/22/2021] [Indexed: 02/07/2023] Open
Abstract
Lipedema is an adipose tissue disorder characterized by the disproportionate increase of subcutaneous fat tissue in the lower and/or upper extremities. The underlying pathomechanism remains unclear and no molecular biomarkers to distinguish the disease exist, leading to a large number of undiagnosed and misdiagnosed patients. To unravel the distinct molecular characteristic of lipedema we performed lipidomic analysis of the adipose tissue and serum of lipedema versus anatomically- and body mass index (BMI)-matched control patients. Both tissue groups showed no significant changes regarding lipid composition. As hyperplastic adipose tissue represents low-grade inflammation, the potential systemic effects on circulating cytokines were evaluated in lipedema and control patients using the Multiplex immunoassay system. Interestingly, increased systemic levels of interleukin 11 (p = 0.03), interleukin 28A (p = 0.04) and interleukin 29 (p = 0.04) were observed. As cytokines can influence metabolic activity, the metabolic phenotype of the stromal vascular fraction was examined, revealing significantly increased mitochondrial respiration in lipedema. In conclusion, despite sharing a comparable lipid profile with healthy adipose tissue, lipedema is characterized by a distinct systemic cytokine profile and metabolic activity of the stromal vascular fraction.
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164
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Wilson JL, Nägele T, Linke M, Demel F, Fritsch SD, Mayr HK, Cai Z, Katholnig K, Sun X, Fragner L, Miller A, Haschemi A, Popa A, Bergthaler A, Hengstschläger M, Weichhart T, Weckwerth W. Inverse Data-Driven Modeling and Multiomics Analysis Reveals Phgdh as a Metabolic Checkpoint of Macrophage Polarization and Proliferation. Cell Rep 2021; 30:1542-1552.e7. [PMID: 32023468 PMCID: PMC7003064 DOI: 10.1016/j.celrep.2020.01.011] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 07/23/2019] [Accepted: 01/02/2020] [Indexed: 01/12/2023] Open
Abstract
Mechanistic or mammalian target of rapamycin complex 1 (mTORC1) is an important regulator of effector functions, proliferation, and cellular metabolism in macrophages. The biochemical processes that are controlled by mTORC1 are still being defined. Here, we demonstrate that integrative multiomics in conjunction with a data-driven inverse modeling approach, termed COVRECON, identifies a biochemical node that influences overall metabolic profiles and reactions of mTORC1-dependent macrophage metabolism. Using a combined approach of metabolomics, proteomics, mRNA expression analysis, and enzymatic activity measurements, we demonstrate that Tsc2, a negative regulator of mTORC1 signaling, critically influences the cellular activity of macrophages by regulating the enzyme phosphoglycerate dehydrogenase (Phgdh) in an mTORC1-dependent manner. More generally, while lipopolysaccharide (LPS)-stimulated macrophages repress Phgdh activity, IL-4-stimulated macrophages increase the activity of the enzyme required for the expression of key anti-inflammatory molecules and macrophage proliferation. Thus, we identify Phgdh as a metabolic checkpoint of M2 macrophages. Metabolomics and inverse modeling reveal a Tsc2/mTORC1-dependent checkpoint in macrophages M2 macrophages have high Phgdh activity Phgdh activity promotes M2 polarization Phgdh activity supports macrophage proliferation
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Affiliation(s)
- Jayne Louise Wilson
- Center of Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, Vienna 1090, Austria
| | - Thomas Nägele
- Department of Ecogenomics and Systems Biology, University of Vienna, Vienna 1090, Austria; Vienna Metabolomics Center (VIME), University of Vienna, Vienna 1090, Austria; Department Biology I, Ludwig Maximilians University Munich, 82152 Planegg-Martinsried, Germany
| | - Monika Linke
- Center of Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, Vienna 1090, Austria
| | - Florian Demel
- Center of Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, Vienna 1090, Austria
| | - Stephanie D Fritsch
- Center of Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, Vienna 1090, Austria
| | - Hannah Katharina Mayr
- Center of Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, Vienna 1090, Austria
| | - Zhengnan Cai
- Department of Ecogenomics and Systems Biology, University of Vienna, Vienna 1090, Austria
| | - Karl Katholnig
- Center of Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, Vienna 1090, Austria
| | - Xiaoliang Sun
- Vienna Metabolomics Center (VIME), University of Vienna, Vienna 1090, Austria
| | - Lena Fragner
- Department of Ecogenomics and Systems Biology, University of Vienna, Vienna 1090, Austria; Vienna Metabolomics Center (VIME), University of Vienna, Vienna 1090, Austria
| | - Anne Miller
- Department of Laboratory Medicine, Medical University of Vienna, Vienna 1090, Austria
| | - Arvand Haschemi
- Department of Laboratory Medicine, Medical University of Vienna, Vienna 1090, Austria
| | - Alexandra Popa
- CeMM Research Center for Molecular Medicine, Austrian Academy of Sciences, Vienna 1090, Austria
| | - Andreas Bergthaler
- CeMM Research Center for Molecular Medicine, Austrian Academy of Sciences, Vienna 1090, Austria
| | - Markus Hengstschläger
- Center of Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, Vienna 1090, Austria
| | - Thomas Weichhart
- Center of Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, Vienna 1090, Austria.
| | - Wolfram Weckwerth
- Department of Ecogenomics and Systems Biology, University of Vienna, Vienna 1090, Austria; Vienna Metabolomics Center (VIME), University of Vienna, Vienna 1090, Austria.
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165
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Oyarce C, Vizcaino-Castro A, Chen S, Boerma A, Daemen T. Re-polarization of immunosuppressive macrophages to tumor-cytotoxic macrophages by repurposed metabolic drugs. Oncoimmunology 2021; 10:1898753. [PMID: 33796407 PMCID: PMC7971325 DOI: 10.1080/2162402x.2021.1898753] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023] Open
Abstract
M2-like tumor-associated macrophages promote tumor progression by establishing an immunosuppressive tumor microenvironment. The phenotype and activity of immunosuppressive macrophages are related to their mitochondrial metabolism. Thus, we studied if drugs targeting mitochondrial metabolic pathways can repolarize macrophages from M2 into an M1-like phenotype or can prevent M0-to-M2 polarization. The drugs selected are clinically approved or in clinical trials and target M2-specific metabolic pathways: fatty acid oxidation (Perhexiline and Trimetazidine), glutaminolysis (CB-839), PPAR activation (HX531), and mitochondrial electron transport chain (VLX-600). Murine bone marrow-derived macrophages were either polarized to M2 using IL-4 in the presence of the drugs or polarized first into M2 and then treated with the drugs in presence of IFN-γ for re-polarization. Targeting both fatty acid oxidation with Perhexiline or the electron transport chain with VLX-600 in the presence of IFN-γ, impaired mitochondrial basal, and maximal respiration and resulted in M2 to M1-like re-polarization (increased iNOS expression, NO production, IL-23, IL-27, and TNF-α secretion), similar to LPS+IFN-γ re-polarization. Moreover, drug-induced macrophage re-polarization resulted in a strong tumor-cytotoxic activity. Furthermore, the polarization of M0- to M2-like macrophages was impaired by CB-839, Trimetazidine, HX531, and Perhexiline, while Hx531 and Perhexiline also reduced MCP-1 secretion. Our results show that by targeting cell metabolism, macrophages could be re-polarized from M2- into an anti-tumoral M1-like phenotype and that M0-to-M2 polarization could be prevented. Overall, this study provides rational for the use of clinically applicable drugs to change an immunosuppressive tumor environment into a pro-inflammatory tumor environment that could support cancer immunotherapies.
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Affiliation(s)
- Cesar Oyarce
- Department of Medical Microbiology and Infection Prevention, Tumor Virology and Cancer Immunotherapy, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Ana Vizcaino-Castro
- Department of Medical Microbiology and Infection Prevention, Tumor Virology and Cancer Immunotherapy, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Shipeng Chen
- Department of Medical Microbiology and Infection Prevention, Tumor Virology and Cancer Immunotherapy, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Annemarie Boerma
- Department of Medical Microbiology and Infection Prevention, Tumor Virology and Cancer Immunotherapy, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Toos Daemen
- Department of Medical Microbiology and Infection Prevention, Tumor Virology and Cancer Immunotherapy, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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166
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Zhou Y, Wu M, Xu L, Cheng J, Shen J, Yang T, Zhang L. Bmal1 Regulates Macrophage Polarize Through Glycolytic Pathway in Alcoholic Liver Disease. Front Pharmacol 2021; 12:640521. [PMID: 33790796 PMCID: PMC8006279 DOI: 10.3389/fphar.2021.640521] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 01/29/2021] [Indexed: 12/12/2022] Open
Abstract
Hepatic macrophages play a critical role in inflammation caused by alcohol feeding. During this process, variation of macrophage phenotypes triggers inflammatory responses in a variety of ways. Moreover, there is increasing evidence that Brain and Muscle Arnt-Like Protein-1 (Bmal1) is regarded as a key regulator of macrophage transformation. In our study, Bmal1 was detected to be low expressed in EtOH-fed mice tissue samples and ethanol-induced RAW264.7 cells. After hepatic specific overexpression of Bmal1, M1 macrophage markers were evidently down-regulated, while M2 markers were on the contrary, showing an upward trend. Furthermore, alcoholic liver lesions were also improved in alcohol feeding mice with overexpressed Bmal1. On this basis, we also found that the glycolytic pathway can regulate macrophage polarization. In vitro, blocking of glycolytic pathway can significantly inhibit M1-type polarization. Importantly, glycolysis levels were also restrained after Bmal1 overexpression. What’s more, Bmal1 exerts a negative regulatory effect on glycolysis by interacting with S100A9 protein. Further studies showed that the alleviation of alcoholic liver disease (ALD) by Bmal1 was associated with glycolytic pathway suppression and M1 macrophage polarization. In summary, we demonstrated that Bmal1 is a gene capable of relieving ALD, and this effect may provide new insights for altering macrophage phenotypes to regulate inflammatory responses in ALD.
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Affiliation(s)
- Yiwen Zhou
- School of Pharmacy, Anhui Medical University, Hefei, China.,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China.,The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
| | - Meifei Wu
- School of Pharmacy, Anhui Medical University, Hefei, China.,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China.,The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
| | - Lei Xu
- School of Pharmacy, Anhui Medical University, Hefei, China.,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China.,The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
| | - Jieling Cheng
- School of Pharmacy, Anhui Medical University, Hefei, China.,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China.,The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
| | - Jie Shen
- School of Pharmacy, Anhui Medical University, Hefei, China.,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China.,The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
| | - Tianyu Yang
- School of Pharmacy, Anhui Medical University, Hefei, China.,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China.,The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
| | - Lei Zhang
- School of Pharmacy, Anhui Medical University, Hefei, China.,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China.,The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Hefei, China
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167
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Hams E, Roberts J, Bermingham R, Fallon PG. Functions for Retinoic Acid-Related Orphan Receptor Alpha (RORα) in the Activation of Macrophages During Lipopolysaccharide-Induced Septic Shock. Front Immunol 2021; 12:647329. [PMID: 33767712 PMCID: PMC7986717 DOI: 10.3389/fimmu.2021.647329] [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: 12/29/2020] [Accepted: 02/16/2021] [Indexed: 12/23/2022] Open
Abstract
The transcription factor Related Orphan Receptor Alpha (RORα) plays an important role in regulating circadian rhythm, inflammation, metabolism and cellular development. Herein we show that in the absence of functional RORα in mice there is reduced susceptibility to LPS-induced endotoxic shock, with selective decreases in release of pro-inflammatory cytokines. Treatment of mice with a RORα selective synthetic inhibitor also reduced the severity of LPS-induced endotoxemia. The reduction in responses in Rora deficient mice was associated with an alterations in metabolic and pro-inflammatory functions of macrophages, both in vivo peritoneal macrophages and in vitro generated bone marrow derived macrophages. Using LysMCreRorafl/sg mice the reduced susceptibility to LPS was shown to be specific to Rora expression in the macrophages. This study identifies that Rora-mediated regulation of macrophages impacts on the pro-inflammatory responses elicited by LPS.
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Affiliation(s)
- Emily Hams
- School of Medicine, Trinity College Dublin, Trinity Biomedical Sciences Institute, Dublin, Ireland
| | - Joseph Roberts
- School of Medicine, Trinity College Dublin, Trinity Biomedical Sciences Institute, Dublin, Ireland
| | - Rachel Bermingham
- School of Medicine, Trinity College Dublin, Trinity Biomedical Sciences Institute, Dublin, Ireland
| | - Padraic G Fallon
- School of Medicine, Trinity College Dublin, Trinity Biomedical Sciences Institute, Dublin, Ireland
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168
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Suchard MS, Savulescu DM. Nicotinamide pathways as the root cause of sepsis - an evolutionary perspective on macrophage energetic shifts. FEBS J 2021; 289:955-964. [PMID: 33686748 PMCID: PMC9545938 DOI: 10.1111/febs.15807] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 02/07/2021] [Accepted: 03/08/2021] [Indexed: 12/28/2022]
Abstract
Divergent pathways of macrophage metabolism occur during infection, notably switching between oxidative phosphorylation and aerobic glycolysis (Warburg-like metabolism). Concurrently, macrophages shift between alternate and classical activation. A key enzyme upregulated in alternatively activated macrophages is indoleamine 2,3-dioxygenase, which converts tryptophan to kynurenine for de novo synthesis of nicotinamide. Nicotinamide can be used to replenish cellular NAD+ supplies. We hypothesize that an insufficient cellular NAD+ supply is the root cause of metabolic shifts in macrophages. We assert that manipulation of nicotinamide pathways may correct deleterious immune responses. We propose evaluation of nicotinamide (Vitamin B3) and analogues, including isoniazid, nicotinamide mononucleotide and nicotinamide riboside, as potential therapy for infectious causes of sepsis, including COVID-19.
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Affiliation(s)
- Melinda S Suchard
- Chemical Pathology, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.,Centre for Vaccines and Immunology, National Institute for Communicable Diseases, a division of the National Health Laboratory Service, Johannesburg, South Africa
| | - Dana M Savulescu
- Chemical Pathology, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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169
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Moderate-intensity functional training improves mitochondrial capability and redox state in peripheral blood mononuclear cells of metabolic syndrome women. SPORT SCIENCES FOR HEALTH 2021. [DOI: 10.1007/s11332-020-00657-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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170
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Patel S, Werstuck GH. Macrophage Function and the Role of GSK3. Int J Mol Sci 2021; 22:ijms22042206. [PMID: 33672232 PMCID: PMC7926541 DOI: 10.3390/ijms22042206] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 02/18/2021] [Accepted: 02/19/2021] [Indexed: 01/18/2023] Open
Abstract
Macrophages are present in nearly all vertebrate tissues, where they respond to a complex variety of regulatory signals to coordinate immune functions involved in tissue development, metabolism, homeostasis, and repair. Glycogen synthase kinase 3 (GSK3) is a ubiquitously expressed protein kinase that plays important roles in multiple pathways involved in cell metabolism. Dysregulation of GSK3 has been implicated in several prevalent metabolic disorders, and recent findings have highlighted the importance of GSK3 activity in the regulation of macrophages, especially with respect to the initiation of specific pathologies. This makes GSK3 a potential therapeutic target for the development of novel drugs to modulate immunometabolic responses. Here, we summarize recent findings that have contributed to our understanding of how GSK3 regulates macrophage function, and we discuss the role of GSK3 in the development of metabolic disorders and diseases.
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Affiliation(s)
- Sarvatit Patel
- Thrombosis and Atherosclerosis Research Institute, 237 Barton Street E, Hamilton, ON L9L 2X2, Canada;
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
| | - Geoff H. Werstuck
- Thrombosis and Atherosclerosis Research Institute, 237 Barton Street E, Hamilton, ON L9L 2X2, Canada;
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
- Department of Medicine, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada
- Correspondence: ; Tel.: +1-905-521-2100 (ext. 40747)
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171
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Bajgar A, Krejčová G, Doležal T. Polarization of Macrophages in Insects: Opening Gates for Immuno-Metabolic Research. Front Cell Dev Biol 2021; 9:629238. [PMID: 33659253 PMCID: PMC7917182 DOI: 10.3389/fcell.2021.629238] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 01/11/2021] [Indexed: 12/14/2022] Open
Abstract
Insulin resistance and cachexia represent severe metabolic syndromes accompanying a variety of human pathological states, from life-threatening cancer and sepsis to chronic inflammatory states, such as obesity and autoimmune disorders. Although the origin of these metabolic syndromes has not been fully comprehended yet, a growing body of evidence indicates their possible interconnection with the acute and chronic activation of an innate immune response. Current progress in insect immuno-metabolic research reveals that the induction of insulin resistance might represent an adaptive mechanism during the acute phase of bacterial infection. In Drosophila, insulin resistance is induced by signaling factors released by bactericidal macrophages as a reflection of their metabolic polarization toward aerobic glycolysis. Such metabolic adaptation enables them to combat the invading pathogens efficiently but also makes them highly nutritionally demanding. Therefore, systemic metabolism has to be adjusted upon macrophage activation to provide them with nutrients and thus support the immune function. That anticipates the involvement of macrophage-derived systemic factors mediating the inter-organ signaling between macrophages and central energy-storing organs. Although it is crucial to coordinate the macrophage cellular metabolism with systemic metabolic changes during the acute phase of bacterial infection, the action of macrophage-derived factors may become maladaptive if chronic or in case of infection by an intracellular pathogen. We hypothesize that insulin resistance evoked by macrophage-derived signaling factors represents an adaptive mechanism for the mobilization of sources and their preferential delivery toward the activated immune system. We consider here the validity of the presented model for mammals and human medicine. The adoption of aerobic glycolysis by bactericidal macrophages as well as the induction of insulin resistance by macrophage-derived factors are conserved between insects and mammals. Chronic insulin resistance is at the base of many human metabolically conditioned diseases such as non-alcoholic steatohepatitis, atherosclerosis, diabetes, and cachexia. Therefore, revealing the original biological relevance of cytokine-induced insulin resistance may help to develop a suitable strategy for treating these frequent diseases.
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Affiliation(s)
- Adam Bajgar
- Department of Molecular Biology and Genetics, University of South Bohemia, Ceske Budejovice, Czechia
| | - Gabriela Krejčová
- Department of Molecular Biology and Genetics, University of South Bohemia, Ceske Budejovice, Czechia
| | - Tomáš Doležal
- Department of Molecular Biology and Genetics, University of South Bohemia, Ceske Budejovice, Czechia
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172
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Gritte RB, Souza-Siqueira T, Curi R, Machado MCC, Soriano FG. Why Septic Patients Remain Sick After Hospital Discharge? Front Immunol 2021; 11:605666. [PMID: 33658992 PMCID: PMC7917203 DOI: 10.3389/fimmu.2020.605666] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Accepted: 12/29/2020] [Indexed: 12/29/2022] Open
Abstract
Sepsis is well known to cause a high patient death rate (up to 50%) during the intensive care unit (ICU) stay. In addition, sepsis survival patients also exhibit a very high death rate after hospital discharge compared to patients with any other disease. The addressed question is then: why septic patients remain ill after hospital discharge? The cellular and molecular mechanisms involved in the high rate of septic patient deaths are still unknown. We described herein the studies that investigated the percentage of septic patients that died after hospital discharge ranging from 90 days up to 5 years. We also reported the symptoms of septic patients after hospital discharge and the development of the recently called post-sepsis syndrome (PSS). The most common symptoms of the PSS are cognitive disabilities, physical functioning decline, difficulties in performing routine daily activities, and poor life quality. The PSS also associates with quite often reinfection and re-hospitalization. This condition is the cause of the high rate of death mentioned above. We reported the proportion of patients dying after hospital discharge up to 5 years of followed up and the PSS symptoms associated. The authors also discuss the possible cellular and metabolic reprogramming mechanisms related with the low survival of septic patients and the occurrence of PSS.
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Affiliation(s)
- Raquel Bragante Gritte
- Interdisciplinary Post-Graduate Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Brazil
| | - Talita Souza-Siqueira
- Interdisciplinary Post-Graduate Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Brazil
| | - Rui Curi
- Interdisciplinary Post-Graduate Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Brazil.,Immunobiological Production Section, Bioindustrial Center, Butantan Institute, São Paulo, Brazil
| | | | - Francisco Garcia Soriano
- University Hospital, University of São Paulo, São Paulo, Brazil.,Internal Medicine Department, School of Medicine, University of São Paulo, São Paulo, Brazil
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173
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CAR-T cell-mediated depletion of immunosuppressive tumor-associated macrophages promotes endogenous antitumor immunity and augments adoptive immunotherapy. Nat Commun 2021; 12:877. [PMID: 33563975 PMCID: PMC7873057 DOI: 10.1038/s41467-021-20893-2] [Citation(s) in RCA: 145] [Impact Index Per Article: 48.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 12/22/2020] [Indexed: 12/13/2022] Open
Abstract
The immunosuppressive tumor microenvironment (TME) represents a major barrier for effective immunotherapy. Tumor-associated macrophages (TAMs) are highly heterogeneous and plastic cell components of the TME which can either promote tumor progression (M2-like) or boost antitumor immunity (M1-like). Here, we demonstrate that a subset of TAMs that express folate receptor β (FRβ) possess an immunosuppressive M2-like profile. In syngeneic tumor mouse models, chimeric antigen receptor (CAR)-T cell-mediated selective elimination of FRβ+ TAMs in the TME results in an enrichment of pro-inflammatory monocytes, an influx of endogenous tumor-specific CD8+ T cells, delayed tumor progression, and prolonged survival. Preconditioning of the TME with FRβ-specific CAR-T cells also improves the effectiveness of tumor-directed anti-mesothelin CAR-T cells, while simultaneous co-administration of both CAR products does not. These results highlight the pro-tumor role of FRβ+ TAMs in the TME and the therapeutic implications of TAM-depleting agents as preparative adjuncts to conventional immunotherapies that directly target tumor antigens.
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174
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Rice Bran Oil Attenuates Chronic Inflammation by Inducing M2 Macrophage Switching in High-Fat Diet-Fed Obese Mice. Foods 2021; 10:foods10020359. [PMID: 33562395 PMCID: PMC7914799 DOI: 10.3390/foods10020359] [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] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/03/2021] [Accepted: 02/04/2021] [Indexed: 01/05/2023] Open
Abstract
Macrophages are involved in all inflammatory processes from killing pathogens to repairing damaged tissue. In the obese state, macrophages infiltrate into enlarged adipose tissue and polarize into pro-inflammatory M1 macrophages, resulting in chronic low-grade inflammation due to the secretion of inflammatory mediators. Rice bran oil (RBO) is an edible oil containing tocopherols, tocotrienols, and γ-oryzanol. Previous research in normal diet-fed mice suggested that RBO mitigates inflammatory responses by modulating mitochondrial respiration of macrophages. Therefore, we investigated if RBO had an anti-inflammatory effect in diet-induced obese mice by assessing the expression of inflammatory markers in epididymal white adipose tissue (eWAT) and polarization of bone marrow-derived macrophages (BMDMs). Rice bran oil exerted a local anti-inflammatory effect in white adipose tissue by suppressing the production of inflammatory mediators and upregulating transcription of anti-inflammatory genes. Rice bran oil also promoted anti-inflammatory M2 macrophage polarization in BMDMs thereby affecting systemic inflammation. Overall, our in vivo and ex vivo results highlight the potential of RBO as a dietary mediator that can ameliorate obesity-induced chronic low-grade inflammation by mediating the expression of inflammation-related factors and macrophage polarization.
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175
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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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176
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Onishi M, Yamano K, Sato M, Matsuda N, Okamoto K. Molecular mechanisms and physiological functions of mitophagy. EMBO J 2021; 40:e104705. [PMID: 33438778 PMCID: PMC7849173 DOI: 10.15252/embj.2020104705] [Citation(s) in RCA: 544] [Impact Index Per Article: 181.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 08/03/2020] [Accepted: 10/02/2020] [Indexed: 12/12/2022] Open
Abstract
Degradation of mitochondria via a selective form of autophagy, named mitophagy, is a fundamental mechanism conserved from yeast to humans that regulates mitochondrial quality and quantity control. Mitophagy is promoted via specific mitochondrial outer membrane receptors, or ubiquitin molecules conjugated to proteins on the mitochondrial surface leading to the formation of autophagosomes surrounding mitochondria. Mitophagy-mediated elimination of mitochondria plays an important role in many processes including early embryonic development, cell differentiation, inflammation, and apoptosis. Recent advances in analyzing mitophagy in vivo also reveal high rates of steady-state mitochondrial turnover in diverse cell types, highlighting the intracellular housekeeping role of mitophagy. Defects in mitophagy are associated with various pathological conditions such as neurodegeneration, heart failure, cancer, and aging, further underscoring the biological relevance. Here, we review our current molecular understanding of mitophagy, and its physiological implications, and discuss how multiple mitophagy pathways coordinately modulate mitochondrial fitness and populations.
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Affiliation(s)
- Mashun Onishi
- Laboratory of Mitochondrial DynamicsGraduate School of Frontier BiosciencesOsaka UniversitySuitaJapan
| | - Koji Yamano
- The Ubiquitin ProjectTokyo Metropolitan Institute of Medical ScienceTokyoJapan
| | - Miyuki Sato
- Laboratory of Molecular Membrane BiologyInstitute for Molecular and Cellular RegulationGunma UniversityMaebashiJapan
| | - Noriyuki Matsuda
- The Ubiquitin ProjectTokyo Metropolitan Institute of Medical ScienceTokyoJapan
| | - Koji Okamoto
- Laboratory of Mitochondrial DynamicsGraduate School of Frontier BiosciencesOsaka UniversitySuitaJapan
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177
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Fransson J, Gómez-Conde AI, Romero-Imbroda J, Fernández O, Leyva L, de Fonseca FR, Chun J, Louapre C, Van-Evercooren AB, Zujovic V, Estivill-Torrús G, García-Díaz B. Activation of Macrophages by Lysophosphatidic Acid through the Lysophosphatidic Acid Receptor 1 as a Novel Mechanism in Multiple Sclerosis Pathogenesis. Mol Neurobiol 2021; 58:470-482. [PMID: 32974731 DOI: 10.1007/s12035-020-02130-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 09/14/2020] [Indexed: 02/07/2023]
Abstract
Multiple sclerosis (MS) is a neuroinflammatory disease whose pathogenesis remains unclear. Lysophosphatidic acid (LPA) is an endogenous phospholipid involved in multiple immune cell functions and dysregulated in MS. Its receptor LPA1 is expressed in macrophages and regulates their activation, which is of interest due to the role of macrophage activation in MS in both destruction and repair. In this study, we studied the genetic deletion and pharmaceutical inhibition of LPA1 in the mouse MS model, experimental autoimmune encephalomyelitis (EAE). LPA1 expression was analyzed in EAE mice and MS patient immune cells. The effect of LPA and LPA1 on macrophage activation was studied in human monocyte-derived macrophages. We show that lack of LPA1 activity induces milder clinical EAE course and that Lpar1 expression in peripheral blood mononuclear cells (PBMC) correlates with onset of relapses and severity in EAE. We see the same over-expression in PBMC from MS patients during relapse compared with progressive forms of the disease and in stimulated monocyte-derived macrophages. LPA induced a proinflammatory-like response in macrophages through LPA1, providing a plausible way in which LPA and LPA1 dysregulation can lead to the inflammation in MS. These data show a new mechanism of LPA signaling in the MS pathogenesis, prompting further research into its use as a therapeutic target biomarker.
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Affiliation(s)
- Jennifer Fransson
- Institut du Cerveau et de la Moelle Epinière-Groupe Hospitalier Pitié-Salpêtrière, INSERM, U1127, CNRS, UMR 7225, F-75013, Paris, France
- Sorbonne Universités, Université Pierre et Marie Curie Paris 06, UM-75, F-75005, Paris, France
| | - Ana Isabel Gómez-Conde
- Unidad de Gestión Clínica de Neurociencias, Instituto de Investigación Biomédica de Málaga-IBIMA, Hospital Regional Universitario de Málaga, Málaga, Spain
| | - Jesús Romero-Imbroda
- Unidad de Gestión Clínica de Neurociencias, Instituto de Investigación Biomédica de Málaga-IBIMA, Hospital Regional Universitario de Málaga, Málaga, Spain
| | - Oscar Fernández
- Unidad de Gestión Clínica de Neurociencias, Instituto de Investigación Biomédica de Málaga-IBIMA, Hospital Regional Universitario de Málaga, Málaga, Spain
| | - Laura Leyva
- Unidad de Gestión Clínica de Neurociencias, Instituto de Investigación Biomédica de Málaga-IBIMA, Hospital Regional Universitario de Málaga, Málaga, Spain
| | - Fernando Rodríguez de Fonseca
- Unidad de Gestión Clínica de Neurociencias, Instituto de Investigación Biomédica de Málaga-IBIMA, Hospital Regional Universitario de Málaga, Málaga, Spain
| | - Jerold Chun
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
| | - Celine Louapre
- Institut du Cerveau et de la Moelle Epinière-Groupe Hospitalier Pitié-Salpêtrière, INSERM, U1127, CNRS, UMR 7225, F-75013, Paris, France
- Sorbonne Universités, Université Pierre et Marie Curie Paris 06, UM-75, F-75005, Paris, France
- Neurology Department Pitié Salpétrière University. Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Anne Baron Van-Evercooren
- Institut du Cerveau et de la Moelle Epinière-Groupe Hospitalier Pitié-Salpêtrière, INSERM, U1127, CNRS, UMR 7225, F-75013, Paris, France
- Sorbonne Universités, Université Pierre et Marie Curie Paris 06, UM-75, F-75005, Paris, France
| | - Violetta Zujovic
- Institut du Cerveau et de la Moelle Epinière-Groupe Hospitalier Pitié-Salpêtrière, INSERM, U1127, CNRS, UMR 7225, F-75013, Paris, France
- Sorbonne Universités, Université Pierre et Marie Curie Paris 06, UM-75, F-75005, Paris, France
| | - Guillermo Estivill-Torrús
- Unidad de Gestión Clínica de Neurociencias, Instituto de Investigación Biomédica de Málaga-IBIMA, Hospital Regional Universitario de Málaga, Málaga, Spain.
| | - Beatriz García-Díaz
- Institut du Cerveau et de la Moelle Epinière-Groupe Hospitalier Pitié-Salpêtrière, INSERM, U1127, CNRS, UMR 7225, F-75013, Paris, France.
- Sorbonne Universités, Université Pierre et Marie Curie Paris 06, UM-75, F-75005, Paris, France.
- Unidad de Gestión Clínica de Neurociencias, Instituto de Investigación Biomédica de Málaga-IBIMA, Hospital Regional Universitario de Málaga, Málaga, Spain.
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178
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Alqassim EY, Sharma S, Khan ANMNH, Emmons TR, Cortes Gomez E, Alahmari A, Singel KL, Mark J, Davidson BA, Robert McGray AJ, Liu Q, Lichty BD, Moysich KB, Wang J, Odunsi K, Segal BH, Baysal BE. RNA editing enzyme APOBEC3A promotes pro-inflammatory M1 macrophage polarization. Commun Biol 2021; 4:102. [PMID: 33483601 PMCID: PMC7822933 DOI: 10.1038/s42003-020-01620-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 12/15/2020] [Indexed: 02/07/2023] Open
Abstract
Pro-inflammatory M1 macrophage polarization is associated with microbicidal and antitumor responses. We recently described APOBEC3A-mediated cytosine-to-uracil (C > U) RNA editing during M1 polarization. However, the functional significance of this editing is unknown. Here we find that APOBEC3A-mediated cellular RNA editing can also be induced by influenza or Maraba virus infections in normal human macrophages, and by interferons in tumor-associated macrophages. Gene knockdown and RNA_Seq analyses show that APOBEC3A mediates C>U RNA editing of 209 exonic/UTR sites in 203 genes during M1 polarization. The highest level of nonsynonymous RNA editing alters a highly-conserved amino acid in THOC5, which encodes a nuclear mRNA export protein implicated in M-CSF-driven macrophage differentiation. Knockdown of APOBEC3A reduces IL6, IL23A and IL12B gene expression, CD86 surface protein expression, and TNF-α, IL-1β and IL-6 cytokine secretion, and increases glycolysis. These results show a key role of APOBEC3A cytidine deaminase in transcriptomic and functional polarization of M1 macrophages.
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Affiliation(s)
- Emad Y Alqassim
- Department of Cancer Prevention and Control, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA
- Department of Pathology, Faculty of Medicine, Jazan University, Jazan, 45142, Saudi Arabia
| | - Shraddha Sharma
- Department of Pathology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA
- Translate Bio, Lexington, MA, 02421, USA
| | - A N M Nazmul H Khan
- Department of Internal Medicine,, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA
| | - Tiffany R Emmons
- Department of Immunology,, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA
| | - Eduardo Cortes Gomez
- Department of Biostatistics/Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA
| | - Abdulrahman Alahmari
- Department of Pharmacology and Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA
- Department of Medical Laboratory Sciences, Prince Sattam Bin Abdulaziz University, Al-Kharj, 16278, Saudi Arabia
| | - Kelly L Singel
- Department of Immunology,, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA
- Office of Evaluation, Performance, and Reporting, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Jaron Mark
- Department of Gynecologic Oncology,, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA
- The Start Center for Cancer Care, 4383 Medical Drive, San Antonio, TX, 78229, USA
| | - Bruce A Davidson
- Departments of Anesthesiology, Pathology and Anatomical Sciences, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, 14203, USA
| | - A J Robert McGray
- Center for Immunotherapy, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA
| | - Qian Liu
- Department of Biostatistics/Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA
| | - Brian D Lichty
- McMaster Immunology Research Centre, McMaster University, 1200 Main St W, Hamilton, ON, L8N 3Z5, Canada
| | - Kirsten B Moysich
- Department of Cancer Prevention and Control, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA
| | - Jianmin Wang
- Department of Biostatistics/Bioinformatics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA
| | - Kunle Odunsi
- Department of Immunology,, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA
- Department of Gynecologic Oncology,, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA
- Center for Immunotherapy, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA
| | - Brahm H Segal
- Department of Internal Medicine,, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA.
- Department of Immunology,, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA.
- Departments of Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, 14203, USA.
| | - Bora E Baysal
- Department of Pathology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, 14203, USA.
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179
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Rudloff S, Janot M, Rodriguez S, Dessalle K, Jahnen-Dechent W, Huynh-Do U. Fetuin-A is a HIF target that safeguards tissue integrity during hypoxic stress. Nat Commun 2021; 12:549. [PMID: 33483479 PMCID: PMC7822914 DOI: 10.1038/s41467-020-20832-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 12/18/2020] [Indexed: 02/08/2023] Open
Abstract
Intrauterine growth restriction (IUGR) is associated with reduced kidney size at birth, accelerated renal function decline, and increased risk for chronic kidney and cardiovascular diseases in adults. Precise mechanisms underlying fetal programming of adult diseases remain largely elusive and warrant extensive investigation. Setting up a mouse model of hypoxia-induced IUGR, fetal adaptations at mRNA, protein and cellular levels, and their long-term functional consequences are characterized, using the kidney as a readout. Here, we identify fetuin-A as an evolutionary conserved HIF target gene, and further investigate its role using fetuin-A KO animals and an adult model of ischemia-reperfusion injury. Beyond its role as systemic calcification inhibitor, fetuin-A emerges as a multifaceted protective factor that locally counteracts calcification, modulates macrophage polarization, and attenuates inflammation and fibrosis, thus preserving kidney function. Our study paves the way to therapeutic approaches mitigating mineral stress-induced inflammation and damage, principally applicable to all soft tissues.
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Affiliation(s)
- Stefan Rudloff
- Department of Nephrology and Hypertension, Bern University Hospital, Freiburgstrasse 15, 3010, Bern, Switzerland
- Department of Biomedical Research, University of Bern, Freiburgstrasse 15, 3010, Bern, Switzerland
| | - Mathilde Janot
- Department of Nephrology and Hypertension, Bern University Hospital, Freiburgstrasse 15, 3010, Bern, Switzerland
- Department of Biomedical Research, University of Bern, Freiburgstrasse 15, 3010, Bern, Switzerland
| | - Stephane Rodriguez
- Department of Nephrology and Hypertension, Bern University Hospital, Freiburgstrasse 15, 3010, Bern, Switzerland
- Department of Biomedical Research, University of Bern, Freiburgstrasse 15, 3010, Bern, Switzerland
- Department of Onco-haematology, Geneva Medical University, Geneva, Switzerland
| | - Kevin Dessalle
- Department of Nephrology and Hypertension, Bern University Hospital, Freiburgstrasse 15, 3010, Bern, Switzerland
- Department of Biomedical Research, University of Bern, Freiburgstrasse 15, 3010, Bern, Switzerland
| | - Willi Jahnen-Dechent
- Helmholtz-Institute for Biomedical Engineering, Biointerface Laboratory, RWTH Aachen University Medical Faculty, Pauwelsstrasse 30, 52074, Aachen, Germany
| | - Uyen Huynh-Do
- Department of Nephrology and Hypertension, Bern University Hospital, Freiburgstrasse 15, 3010, Bern, Switzerland.
- Department of Biomedical Research, University of Bern, Freiburgstrasse 15, 3010, Bern, Switzerland.
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180
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Jagatia H, Tsolaki AG. The Role of Complement System and the Immune Response to Tuberculosis Infection. MEDICINA (KAUNAS, LITHUANIA) 2021; 57:84. [PMID: 33498555 PMCID: PMC7909539 DOI: 10.3390/medicina57020084] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/11/2021] [Accepted: 01/13/2021] [Indexed: 11/30/2022]
Abstract
The complement system orchestrates a multi-faceted immune response to the invading pathogen, Mycobacterium tuberculosis. Macrophages engulf the mycobacterial bacilli through bacterial cell surface proteins or secrete proteins, which activate the complement pathway. The classical pathway is activated by C1q, which binds to antibody antigen complexes. While the alternative pathway is constitutively active and regulated by properdin, the direct interaction of properdin is capable of complement activation. The lectin-binding pathway is activated in response to bacterial cell surface carbohydrates such as mannose, fucose, and N-acetyl-d-glucosamine. All three pathways contribute to mounting an immune response for the clearance of mycobacteria. However, the bacilli can reside, persist, and evade clearance by the immune system once inside the macrophages using a number of mechanisms. The immune system can compartmentalise the infection into a granulomatous structure, which contains heterogenous sub-populations of M. tuberculosis. The granuloma consists of many types of immune cells, which aim to clear and contain the infection whilst sacrificing the affected host tissue. The full extent of the involvement of the complement system during infection with M. tuberculosis is not fully understood. Therefore, we reviewed the available literature on M. tuberculosis and other mycobacterial literature to understand the contribution of the complement system during infection.
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Affiliation(s)
- Heena Jagatia
- Department for Respiratory Sciences, University of Leicester, Leicester LE1 9HN, UK
| | - Anthony G. Tsolaki
- Department of Life Sciences, College of Health and Life Sciences, Brunel University of London, Uxbridge UB8 3PN, UK;
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181
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Choi I, Son H, Baek JH. Tricarboxylic Acid (TCA) Cycle Intermediates: Regulators of Immune Responses. Life (Basel) 2021; 11:69. [PMID: 33477822 PMCID: PMC7832849 DOI: 10.3390/life11010069] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/15/2021] [Accepted: 01/18/2021] [Indexed: 02/06/2023] Open
Abstract
The tricarboxylic acid cycle (TCA) is a series of chemical reactions used in aerobic organisms to generate energy via the oxidation of acetylcoenzyme A (CoA) derived from carbohydrates, fatty acids and proteins. In the eukaryotic system, the TCA cycle occurs completely in mitochondria, while the intermediates of the TCA cycle are retained inside mitochondria due to their polarity and hydrophilicity. Under cell stress conditions, mitochondria can become disrupted and release their contents, which act as danger signals in the cytosol. Of note, the TCA cycle intermediates may also leak from dysfunctioning mitochondria and regulate cellular processes. Increasing evidence shows that the metabolites of the TCA cycle are substantially involved in the regulation of immune responses. In this review, we aimed to provide a comprehensive systematic overview of the molecular mechanisms of each TCA cycle intermediate that may play key roles in regulating cellular immunity in cell stress and discuss its implication for immune activation and suppression.
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Affiliation(s)
| | | | - Jea-Hyun Baek
- School of Life Science, Handong Global University, Pohang, Gyeongbuk 37554, Korea; (I.C.); (H.S.)
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182
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Kim YI, Yi EJ, Kim YD, Lee AR, Chung J, Ha HC, Cho JM, Kim SR, Ko HJ, Cheon JH, Hong YR, Chang SY. Local Stabilization of Hypoxia-Inducible Factor-1α Controls Intestinal Inflammation via Enhanced Gut Barrier Function and Immune Regulation. Front Immunol 2021; 11:609689. [PMID: 33519819 PMCID: PMC7840603 DOI: 10.3389/fimmu.2020.609689] [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: 09/24/2020] [Accepted: 11/30/2020] [Indexed: 12/13/2022] Open
Abstract
Intestinal epithelial cells are adapted in mucosal hypoxia and hypoxia-inducible factors in these cells can fortify barrier integrity to support mucosal tissue healing. Here we investigated whether hypoxia-related pathways could be proposed as potential therapeutic targets for inflammatory bowel disease. We developed a novel hypoxia-inducible factor (HIF) prolyl hydroxylase inhibitor, CG-598 which stabilized HIF-1α in the gut tissue. Treatment of CG-598 did not affect extra-intestinal organs or cause any significant adverse effects such as erythropoiesis. In the experimental murine colitis model, CG-598 ameliorated intestinal inflammation with reduction of inflammatory lesions and pro-inflammatory cytokines. CG-598 treatment fortified barrier function by increasing the expression of intestinal trefoil factor, CD73, E-cadherin and mucin. Also, IL-10 and IL-22 were induced from lamina propria CD4+ T-cells. The effectiveness of CG-598 was comparable to other immunosuppressive therapeutics such as TNF-blockers or JAK inhibitors. These results suggest that CG-598 could be a promising therapeutic candidate to treat inflammatory bowel disease.
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Affiliation(s)
- Young-In Kim
- Laboratory of Microbiology, College of Pharmacy and Research Institute of Pharmaceutical Science and Technology, Ajou University, Suwon, South Korea
| | - Eun-Je Yi
- Laboratory of Microbiology, College of Pharmacy and Research Institute of Pharmaceutical Science and Technology, Ajou University, Suwon, South Korea
| | - Young-Dae Kim
- Institute for Drug Discovery, CrystalGenomics, Inc., Seongnam-si, South Korea
| | - A Reum Lee
- Institute for Drug Discovery, CrystalGenomics, Inc., Seongnam-si, South Korea
| | - Jiwoung Chung
- Institute for Drug Discovery, CrystalGenomics, Inc., Seongnam-si, South Korea
| | - Hae Chan Ha
- Institute for Drug Discovery, CrystalGenomics, Inc., Seongnam-si, South Korea
| | - Joong Myung Cho
- Institute for Drug Discovery, CrystalGenomics, Inc., Seongnam-si, South Korea
| | - Seong-Ryeol Kim
- Laboratory of Microbiology and Immunology, Department of Pharmacy, Kangwon National University, Chuncheon-si, South Korea
| | - Hyun-Jeong Ko
- Laboratory of Microbiology and Immunology, Department of Pharmacy, Kangwon National University, Chuncheon-si, South Korea
| | - Jae-Hee Cheon
- Department of Internal Medicine and Institute of Gastroenterology, Yonsei University College of Medicine, Seoul, South Korea
| | - Yong Rae Hong
- Institute for Drug Discovery, CrystalGenomics, Inc., Seongnam-si, South Korea
| | - Sun-Young Chang
- Laboratory of Microbiology, College of Pharmacy and Research Institute of Pharmaceutical Science and Technology, Ajou University, Suwon, South Korea
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183
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Duong L, Radley HG, Lee B, Dye DE, Pixley FJ, Grounds MD, Nelson DJ, Jackaman C. Macrophage function in the elderly and impact on injury repair and cancer. IMMUNITY & AGEING 2021; 18:4. [PMID: 33441138 PMCID: PMC7805172 DOI: 10.1186/s12979-021-00215-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 01/01/2021] [Indexed: 02/07/2023]
Abstract
Older age is associated with deteriorating health, including escalating risk of diseases such as cancer, and a diminished ability to repair following injury. This rise in age-related diseases/co-morbidities is associated with changes to immune function, including in myeloid cells, and is related to immunosenescence. Immunosenescence reflects age-related changes associated with immune dysfunction and is accompanied by low-grade chronic inflammation or inflammageing. This is characterised by increased levels of circulating pro-inflammatory cytokines such as tumor necrosis factor (TNF), interleukin (IL)-1β and IL-6. However, in healthy ageing, there is a concomitant age-related escalation in anti-inflammatory cytokines such as transforming growth factor-β1 (TGF-β1) and IL-10, which may overcompensate to regulate the pro-inflammatory state. Key inflammatory cells, macrophages, play a role in cancer development and injury repair in young hosts, and we propose that their role in ageing in these scenarios may be more profound. Imbalanced pro- and anti-inflammatory factors during ageing may also have a significant influence on macrophage function and further impact the severity of age-related diseases in which macrophages are known to play a key role. In this brief review we summarise studies describing changes to inflammatory function of macrophages (from various tissues and across sexes) during healthy ageing. We also describe age-related diseases/co-morbidities where macrophages are known to play a key role, focussed on injury repair processes and cancer, plus comment briefly on strategies to correct for these age-related changes.
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Affiliation(s)
- L Duong
- Curtin Medical School, Curtin Health Innovation Research Institute, Faculty of Health Sciences, Curtin University, Kent Street, 6102, Bentley, Western Australia, Australia
| | - H G Radley
- Curtin Medical School, Curtin Health Innovation Research Institute, Faculty of Health Sciences, Curtin University, Kent Street, 6102, Bentley, Western Australia, Australia
| | - B Lee
- Curtin Medical School, Curtin Health Innovation Research Institute, Faculty of Health Sciences, Curtin University, Kent Street, 6102, Bentley, Western Australia, Australia
| | - D E Dye
- Curtin Medical School, Curtin Health Innovation Research Institute, Faculty of Health Sciences, Curtin University, Kent Street, 6102, Bentley, Western Australia, Australia
| | - F J Pixley
- School of Biomedical Sciences, University of Western Australia, 6009, Nedlands, Western Australia, Australia
| | - M D Grounds
- School of Human Sciences, University of Western Australia, 6009, Nedlands, Western Australia, Australia
| | - D J Nelson
- Curtin Medical School, Curtin Health Innovation Research Institute, Faculty of Health Sciences, Curtin University, Kent Street, 6102, Bentley, Western Australia, Australia
| | - C Jackaman
- Curtin Medical School, Curtin Health Innovation Research Institute, Faculty of Health Sciences, Curtin University, Kent Street, 6102, Bentley, Western Australia, Australia.
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184
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Cortes-Selva D, Gibbs L, Maschek JA, Nascimento M, Van Ry T, Cox JE, Amiel E, Fairfax KC. Metabolic reprogramming of the myeloid lineage by Schistosoma mansoni infection persists independently of antigen exposure. PLoS Pathog 2021; 17:e1009198. [PMID: 33417618 PMCID: PMC7819610 DOI: 10.1371/journal.ppat.1009198] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 01/21/2021] [Accepted: 11/30/2020] [Indexed: 12/13/2022] Open
Abstract
Macrophages have a defined role in the pathogenesis of metabolic disease and cholesterol metabolism where alternative activation of macrophages is thought to be beneficial to both glucose and cholesterol metabolism during high fat diet induced disease. It is well established that helminth infection protects from metabolic disease, but the mechanisms underlying protection are not well understood. Here, we investigated the effects of Schistosoma mansoni infection and cytokine activation in the metabolic signatures of bone marrow derived macrophages using an approach that integrated transcriptomics, metabolomics, and lipidomics in a metabolic disease prone mouse model. We demonstrate that bone marrow derived macrophages (BMDM) from S. mansoni infected male ApoE-/- mice have dramatically increased mitochondrial respiration compared to those from uninfected mice. This change is associated with increased glucose and palmitate shuttling into TCA cycle intermediates, increased accumulation of free fatty acids, and decreased accumulation of cellular cholesterol esters, tri and diglycerides, and is dependent on mgll activity. Systemic injection of IL-4 complexes is unable to recapitulate either reductions in systemic glucose AUC or the re-programing of BMDM mitochondrial respiration seen in infected males. Importantly, the metabolic reprogramming of male myeloid cells is transferrable via bone marrow transplantation to an uninfected host, indicating maintenance of reprogramming in the absence of sustained antigen exposure. Finally, schistosome induced metabolic and bone marrow modulation is sex-dependent, with infection protecting male, but not female mice from glucose intolerance and obesity. Our findings identify a transferable, long-lasting sex-dependent reprograming of the metabolic signature of macrophages by helminth infection, providing key mechanistic insight into the factors regulating the beneficial roles of helminth infection in metabolic disease.
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Affiliation(s)
- Diana Cortes-Selva
- Department of Pathology, Division of Microbiology and Immunology, University of Utah, Salt Lake City Utah, United States of America.,Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette Indiana, United States of America
| | - Lisa Gibbs
- Department of Pathology, Division of Microbiology and Immunology, University of Utah, Salt Lake City Utah, United States of America
| | - J Alan Maschek
- Metabolomics, Proteomics and Mass Spectrometry Cores, University of Utah, Salt Lake City, Utah, United States of America.,Department of Nutrition and Integrative Physiology and the Diabetes and Metabolism Research Center, University of Utah, Salt Lake City, Utah, United States of America
| | - Marcia Nascimento
- Department of Pathology, Division of Microbiology and Immunology, University of Utah, Salt Lake City Utah, United States of America
| | - Tyler Van Ry
- Metabolomics, Proteomics and Mass Spectrometry Cores, University of Utah, Salt Lake City, Utah, United States of America.,Department of Biochemistry, University of Utah, Salt Lake City Utah, United States of America
| | - James E Cox
- Metabolomics, Proteomics and Mass Spectrometry Cores, University of Utah, Salt Lake City, Utah, United States of America.,Department of Biochemistry, University of Utah, Salt Lake City Utah, United States of America
| | - Eyal Amiel
- Department of Biomedical and Health Sciences, University of Vermont, Burlington, Vermont, United States of America
| | - Keke C Fairfax
- Department of Pathology, Division of Microbiology and Immunology, University of Utah, Salt Lake City Utah, United States of America.,Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette Indiana, United States of America
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185
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Jutley GS, Sahota K, Sahbudin I, Filer A, Arayssi T, Young SP, Raza K. Relationship Between Inflammation and Metabolism in Patients With Newly Presenting Rheumatoid Arthritis. Front Immunol 2021; 12:676105. [PMID: 34650548 PMCID: PMC8507469 DOI: 10.3389/fimmu.2021.676105] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 08/04/2021] [Indexed: 12/29/2022] Open
Abstract
Background Systemic inflammation in rheumatoid arthritis (RA) is associated with metabolic changes. We used nuclear magnetic resonance (NMR) spectroscopy-based metabolomics to assess the relationship between an objective measure of systemic inflammation [C-reactive protein (CRP)] and both the serum and urinary metabolome in patients with newly presenting RA. Methods Serum (n=126) and urine (n=83) samples were collected at initial presentation from disease modifying anti-rheumatic drug naïve RA patients for metabolomic profile assessment using 1-dimensional 1H-NMR spectroscopy. Metabolomics data were analysed using partial least square regression (PLS-R) and orthogonal projections to latent structure discriminant analysis (OPLS-DA) with cross validation. Results Using PLS-R analysis, a relationship between the level of inflammation, as assessed by CRP, and the serum (p=0.001) and urinary (p<0.001) metabolome was detectable. Likewise, following categorisation of CRP into tertiles, patients in the lowest CRP tertile and the highest CRP tertile were statistically discriminated using OPLS-DA analysis of both serum (p=0.033) and urinary (p<0.001) metabolome. The most highly weighted metabolites for these models included glucose, amino acids, lactate, and citrate. These findings suggest increased glycolysis, perturbation in the citrate cycle, oxidative stress, protein catabolism and increased urea cycle activity are key characteristics of newly presenting RA patients with elevated CRP. Conclusions This study consolidates our understanding of a previously identified relationship between serum metabolite profile and inflammation and provides novel evidence that there is a relationship between urinary metabolite profile and inflammation as measured by CRP. Identification of these metabolic perturbations provides insights into the pathogenesis of RA and may help in the identification of therapeutic targets.
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Affiliation(s)
- Gurpreet Singh Jutley
- NIHR Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust and Institute for Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Kalvin Sahota
- NIHR Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust and Institute for Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Ilfita Sahbudin
- NIHR Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust and Institute for Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Andrew Filer
- NIHR Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust and Institute for Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom.,Research Into Inflammatory Arthritis Centre, Versus Arthritis, University of Birmingham, Birmingham, United Kingdom
| | | | - Stephen P Young
- NIHR Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust and Institute for Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Karim Raza
- NIHR Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust and Institute for Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom.,Research Into Inflammatory Arthritis Centre, Versus Arthritis, University of Birmingham, Birmingham, United Kingdom.,Department of Rheumatology, Sandwell and West Birmingham NHS Trust, Birmingham, United Kingdom
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186
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Zhang Z, Jiang Z, Zhang Y, Zhang Y, Yan Y, Bhushan S, Meinhardt A, Qin Z, Wang M. Corticosterone Enhances the AMPK-Mediated Immunosuppressive Phenotype of Testicular Macrophages During Uropathogenic Escherichia coli Induced Orchitis. Front Immunol 2020; 11:583276. [PMID: 33363533 PMCID: PMC7752858 DOI: 10.3389/fimmu.2020.583276] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 11/10/2020] [Indexed: 12/12/2022] Open
Abstract
Testicular macrophages (TM) play a central role in maintaining testicular immune privilege and protecting spermatogenesis. Recent studies showed that their immunosuppressive properties are maintained by corticosterone in the testicular interstitial fluid, but the underlying molecular mechanisms are unknown. In this study, we treated mouse bone marrow-derived macrophages (BMDM) with corticosterone (50 ng/ml) and uncovered AMP-activated protein kinase (AMPK) activation as a critical event in M2 polarization at the phenotypic, metabolic, and cytokine production level. Primary TM exhibited remarkably similar metabolic and phenotypic features to corticosterone-treated BMDM, which were partially reversed by AMPK-inhibition. In a murine model of uropathogenic E. coli-elicited orchitis, intraperitoneal injection with corticosterone (0.1mg/day) increased the percentage of M2 TM in vivo, in a partially AMPK-dependent manner. This study integrates the influence of corticosterone on M2 macrophage metabolic pathways, phenotype, and function, and highlights a promising new avenue for the development of innovative therapeutics for orchitis patients.
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Affiliation(s)
- Zhengguo Zhang
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ziming Jiang
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yiming Zhang
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yu Zhang
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yan Yan
- Medical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Sudhanshu Bhushan
- Department of Anatomy and Cell Biology, Justus-Liebig-University of Giessen, Giessen, Germany
| | - Andreas Meinhardt
- Department of Anatomy and Cell Biology, Justus-Liebig-University of Giessen, Giessen, Germany
| | - Zhihai Qin
- Medical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,School of Basic Medical Sciences, The Academy of Medical Sciences of Zhengzhou University, Zhengzhou, China
| | - Ming Wang
- Medical Research Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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187
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Ding H, Wang JJ, Zhang XY, Yin L, Feng T. Lycium barbarum Polysaccharide Antagonizes LPS-Induced Inflammation by Altering the Glycolysis and Differentiation of Macrophages by Triggering the Degradation of PKM2. Biol Pharm Bull 2020; 44:379-388. [PMID: 33390389 DOI: 10.1248/bpb.b20-00752] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Lipopolysaccharide (LPS)-induced inflammation is the leading cause of multiple organ failure in sepsis. Pyruvate kinase 2 (PKM2) is a protein kinase and transcriptional coactivator that plays an important role in glycolysis. Recent studies have confirmed that glycolysis maintains the M1 differentiation and induces immune activation in macrophages. Lycium barbarum polysaccharide (LBP), the main bioactive component of Chinese wolfberry, suppresses glycolysis and inflammation. Here, RAW264.7 macrophages were treated with LBP for evaluating its effects against LPS-induced inflammation. The differentiation of M1/M2 macrophages was assessed by flow cytometry for assessing the cell surface markers, CD86 and CD206. The enrichment of hypoxia inducible factor (HIF)-1α and ubiquitin in the PKM2 protein complex was determined by co-immunoprecipitation. LBP suppressed LPS-induced glycolysis, differentiation of M1 macrophages, and the production of interleukin (IL)-1β, tumor necrosis factor (TNF)-α, and high mobility group (HMG) 1 proteins. The suppressive effects of LBP were similar to those of PKM2 knockdown, but were abolished by the overexpression of PKM2. LPS elevated the mRNA and protein levels of PKM2. LBP reduced the LPS-induced expression of PKM2 protein, but had no effects on the expression of PKM2 mRNA. LPS inhibited the ubiquitination of PKM2, probably by downregulating the expression of ubiquitin ligases, including Nedd4L, Nedd4, and Gnb2. LBP interfered with the inhibition of PKM2 ubiquitination by upregulating the expression of Nedd4L, Nedd4, and Gnb2. In conclusion, LBP suppressed the LPS-induced inflammation by altering glycolysis and the M1 differentiation of macrophages. The effects of LBP were mediated by the downregulation of PKM2 via enhanced ubiquitination.
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Affiliation(s)
- Huan Ding
- Intensive Care Unit (ICU), Department of Critical Care Unit, General Hospital of Ningxia Medical University
| | - Jing-Jing Wang
- Coronary Care Unit (CCU), Department of Cardiology, General Hospital of Ningxia Medical University
| | - Xiao-Ya Zhang
- Intensive Care Unit (ICU), Department of Critical Care Unit, General Hospital of Ningxia Medical University
| | - Lei Yin
- Intensive Care Unit (ICU), Department of Critical Care Unit, General Hospital of Ningxia Medical University
| | - Tao Feng
- Intensive Care Unit (ICU), Department of Critical Care Unit, Ningxia Third Hospital
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188
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Zhang X, Zink F, Hezel F, Vogt J, Wachter U, Wepler M, Loconte M, Kranz C, Hellmann A, Mizaikoff B, Radermacher P, Hartmann C. Metabolic substrate utilization in stress-induced immune cells. Intensive Care Med Exp 2020; 8:28. [PMID: 33336295 PMCID: PMC7746792 DOI: 10.1186/s40635-020-00316-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 06/11/2020] [Indexed: 12/21/2022] Open
Abstract
Immune cell activation leads to the acquisition of new functions, such as proliferation, chemotaxis, and cytokine production. These functional changes require continuous metabolic adaption in order to sustain ATP homeostasis for sufficient host defense. The bioenergetic demands are usually met by the interconnected metabolic pathways glycolysis, TCA cycle, and oxidative phosphorylation. Apart from glucose, other sources, such as fatty acids and glutamine, are able to fuel the TCA cycle.Rising evidence has shown that cellular metabolism has a direct effect on the regulation of immune cell functions. Thus, quiescent immune cells maintain a basal metabolic state, which shifts to an accelerated metabolic level upon immune cell activation in order to promote key effector functions.This review article summarizes distinct metabolic signatures of key immune cell subsets from quiescence to activation and demonstrates a methodical concept of how to assess cellular metabolic pathways. It further discusses why metabolic functions are of rising interest for translational research and how they can be affected by the underlying pathophysiological condition and/or therapeutic interventions.
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Affiliation(s)
- Xiaomin Zhang
- Institut für Anästhesiologische Pathophysiologie und Verfahrensentwicklung, Universitätsklinikum Ulm, Helmholzstraße 8/1, 89081 Ulm, Germany
| | - Fabian Zink
- Institut für Anästhesiologische Pathophysiologie und Verfahrensentwicklung, Universitätsklinikum Ulm, Helmholzstraße 8/1, 89081 Ulm, Germany
| | - Felix Hezel
- Institut für Anästhesiologische Pathophysiologie und Verfahrensentwicklung, Universitätsklinikum Ulm, Helmholzstraße 8/1, 89081 Ulm, Germany
| | - Josef Vogt
- Institut für Anästhesiologische Pathophysiologie und Verfahrensentwicklung, Universitätsklinikum Ulm, Helmholzstraße 8/1, 89081 Ulm, Germany
| | - Ulrich Wachter
- Institut für Anästhesiologische Pathophysiologie und Verfahrensentwicklung, Universitätsklinikum Ulm, Helmholzstraße 8/1, 89081 Ulm, Germany
| | - Martin Wepler
- Institut für Anästhesiologische Pathophysiologie und Verfahrensentwicklung, Universitätsklinikum Ulm, Helmholzstraße 8/1, 89081 Ulm, Germany
- Klinik für Anästhesiologie, Universitätsklinikum Ulm, Ulm, Germany
| | - Maurizio Loconte
- Anesthesia and Intensive Care, San Martino Policlinico Hospital, IRCCS for Oncolocy and Neuroscience, Genoa, Italy
| | - Christine Kranz
- Institut für Analytische und Bioanalytische Chemie, Universität Ulm, Ulm, Germany
| | - Andreas Hellmann
- Institut für Analytische und Bioanalytische Chemie, Universität Ulm, Ulm, Germany
| | - Boris Mizaikoff
- Institut für Analytische und Bioanalytische Chemie, Universität Ulm, Ulm, Germany
| | - Peter Radermacher
- Institut für Anästhesiologische Pathophysiologie und Verfahrensentwicklung, Universitätsklinikum Ulm, Helmholzstraße 8/1, 89081 Ulm, Germany
| | - Clair Hartmann
- Institut für Anästhesiologische Pathophysiologie und Verfahrensentwicklung, Universitätsklinikum Ulm, Helmholzstraße 8/1, 89081 Ulm, Germany
- Klinik für Anästhesiologie, Universitätsklinikum Ulm, Ulm, Germany
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189
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Deng W, Mandeville E, Terasaki Y, Li W, Holder J, Chuang AT, Ning M, Arai K, Lo EH, Xing C. Transcriptomic characterization of microglia activation in a rat model of ischemic stroke. J Cereb Blood Flow Metab 2020; 40:S34-S48. [PMID: 33208001 PMCID: PMC7687036 DOI: 10.1177/0271678x20932870] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Microglia are key regulators of inflammatory response after stroke and brain injury. To better understand activation of microglia as well as their phenotypic diversity after ischemic stroke, we profiled the transcriptome of microglia after 75 min transient focal cerebral ischemia in 3-month- and 12-month-old male spontaneously hypertensive rats. Microglia were isolated from the brains by FACS sorting on days 3 and 14 after cerebral ischemia. GeneChip Rat 1.0ST microarray was used to profile the whole transcriptome of sorted microglia. We identified an evolving and complex pattern of activation from 3 to 14 days after stroke onset. M2-like patterns were extensively and persistently upregulated over time. M1-like patterns were only mildly upregulated, mostly at day 14. Younger 3-month-old brains showed a larger microglial response in both pro- and anti-inflammatory pathways, compared to older 12-month-old brains. Importantly, our data revealed that after stroke, most microglia are activated towards a wide spectrum of novel polarization states beyond the standard M1/M2 dichotomy, especially in pathways related to TLR2 and dietary fatty acid signaling. Finally, classes of transcription factors that might potentially regulate microglial activation were identified. These findings should provide a comprehensive database for dissecting microglial mechanisms and pursuing neuroinflammation targets for acute ischemic stroke.
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Affiliation(s)
- Wenjun Deng
- Neuroprotection Research Laboratories, Departments of Radiology and Neurology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA.,Clinical Proteomics Research Center, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Emiri Mandeville
- Neuroprotection Research Laboratories, Departments of Radiology and Neurology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Yasukazu Terasaki
- Neuroprotection Research Laboratories, Departments of Radiology and Neurology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Wenlu Li
- Neuroprotection Research Laboratories, Departments of Radiology and Neurology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | | | | | - Mingming Ning
- Clinical Proteomics Research Center, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Ken Arai
- Neuroprotection Research Laboratories, Departments of Radiology and Neurology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Eng H Lo
- Neuroprotection Research Laboratories, Departments of Radiology and Neurology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA.,Clinical Proteomics Research Center, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Changhong Xing
- Neuroprotection Research Laboratories, Departments of Radiology and Neurology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA.,Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA
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190
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Saeki N, Imai Y. Reprogramming of synovial macrophage metabolism by synovial fibroblasts under inflammatory conditions. Cell Commun Signal 2020; 18:188. [PMID: 33256735 PMCID: PMC7708128 DOI: 10.1186/s12964-020-00678-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 10/26/2020] [Indexed: 12/11/2022] Open
Abstract
Background Macrophages adapt to microenvironments, and change metabolic status and functions to regulate inflammation and/or maintain homeostasis. In joint cavities, synovial macrophages (SM) and synovial fibroblasts (SF) maintain homeostasis. However, under inflammatory conditions such as rheumatoid arthritis (RA), crosstalk between SM and SF remains largely unclear. Methods Immunofluorescent staining was performed to identify localization of SM and SF in synovium of collagen antibody induced arthritis (CAIA) model mice and normal mice. Murine arthritis tissue-derived SM (ADSM), arthritis tissue-derived SF (ADSF) and normal tissue-derived SF (NDSF) were isolated and the purity of isolated cells was examined by RT-qPCR and flow cytometry analysis. RNA-seq was conducted to reveal gene expression profile in ADSM, NDSF and ADSF. Cellular metabolic status and expression levels of metabolic genes and inflammatory genes were analyzed in ADSM treated with ADSM-conditioned medium (ADSM-CM), NDSF-CM and ADSF-CM.
Results SM and SF were dispersed in murine hyperplastic synovium. Isolations of ADSM, NDSF and ADSF to analyze the crosstalk were successful with high purity. From gene expression profiles by RNA-seq, we focused on secretory factors in ADSF-CM, which can affect metabolism and inflammatory activity of ADSM. ADSM exposed to ADSF-CM showed significantly upregulated glycolysis and mitochondrial respiration as well as glucose and glutamine uptake relative to ADSM exposed to ADSM-CM and NDSF-CM. Furthermore, mRNA expression levels of metabolic genes, such as Slc2a1, Slc1a5, CD36, Pfkfb1, Pfkfb3 and Irg1, were significantly upregulated in ADSM treated with ADSF-CM. Inflammation marker genes, including Nos2, Tnf, Il-1b and CD86, and the anti-inflammatory marker gene, Il-10, were also substantially upregulated by ADSF-CM. On the other hand, NDSF-CM did not affect metabolism and gene expression in ADSM. Conclusions These findings suggest that crosstalk between SM and SF under inflammatory conditions can induce metabolic reprogramming and extend SM viability that together can contribute to chronic inflammation in RA. Video Abstract
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Affiliation(s)
- Noritaka Saeki
- Division of Laboratory Animal Research, Advanced Research Support Center, Ehime University, Shitsukawa, Toon, Ehime, 791-0295, Japan. .,Division of Integrative Pathophysiology, Proteo-Science Center, Graduate School of Medicine, Ehime University, Shitsukawa, Toon, Ehime, 791-0295, Japan.
| | - Yuuki Imai
- Division of Laboratory Animal Research, Advanced Research Support Center, Ehime University, Shitsukawa, Toon, Ehime, 791-0295, Japan. .,Division of Integrative Pathophysiology, Proteo-Science Center, Graduate School of Medicine, Ehime University, Shitsukawa, Toon, Ehime, 791-0295, Japan. .,Department of Pathophysiology, Graduate School of Medicine, Ehime University, Ehime, Japan.
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191
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Polumuri S, Perkins DJ, Vogel SN. cAMP levels regulate macrophage alternative activation marker expression. Innate Immun 2020; 27:133-142. [PMID: 33241977 PMCID: PMC7882807 DOI: 10.1177/1753425920975082] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
The capacity for macrophages to polarize into distinct functional activation states (e.g., M1, M2) is critical to tune an inflammatory response to the relevant infection or injury. Alternative or M2 polarization of macrophages is most often achieved in vitro in response to IL-4/IL-13 and results in the transcriptional up-regulation of a constellation of characteristic M2 marker genes. In vivo, additional signals from the inflammatory milieu can further increase or decrease M2 marker expression. Particularly, activation of cAMP-generating G protein-coupled receptors is reported to increase M2 markers, but whether this is strictly dependent upon cAMP production is unclear. We report herein that increased cAMP alone can increase IL-4-dependent M2 marker expression through a PKA/C/EBPβ/CREB dependent pathway in murine macrophages.
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Affiliation(s)
- Swamy Polumuri
- Food and Drug Administration (FDA), White Oak Campus, Silver Spring, MD, USA
| | - Darren J Perkins
- Department of Microbiology and Immunology, University of Maryland, Baltimore (UMB), School of Medicine, Baltimore, MD, USA
| | - Stefanie N Vogel
- Department of Microbiology and Immunology, University of Maryland, Baltimore (UMB), School of Medicine, Baltimore, MD, USA
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192
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Targeting a scavenger receptor on tumor-associated macrophages activates tumor cell killing by natural killer cells. Proc Natl Acad Sci U S A 2020; 117:32005-32016. [PMID: 33229588 DOI: 10.1073/pnas.2015343117] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Tumor-associated macrophages (TAMs) can have protumor properties, including suppressing immune responses, promoting vascularization and, consequently, augmenting tumor progression. To stop TAM-mediated immunosuppression, we use a novel treatment by injecting antibodies specific for scavenger receptor MARCO, which is expressed on a specific subpopulation of TAMs in the tumor. We now report the location of this TAM as well as the pleiotropic mechanism of action of anti-MARCO antibody treatment on tumor progression and further show that this is potentially relevant to humans. Using specific targeting, we observed decreased tumor vascularization, a switch in the metabolic program of MARCO-expressing macrophages, and activation of natural killer (NK) cell killing through TNF-related apoptosis-inducing ligand (TRAIL). This latter activity reverses the effect of melanoma cell-conditioned macrophages in blocking NK activation and synergizes with T cell-directed immunotherapy, such as antibodies to PD-1 or PD-L1, to enhance tumor killing. Our study thus reveals an approach to targeting the immunosuppressive tumor microenvironment with monoclonal antibodies to enhance NK cell activation and NK cell-mediated killing. This can complement existing T cell-directed immunotherapy, providing a promising approach to combinatorial immunotherapy for cancer.
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193
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Venosa A. Senescence in Pulmonary Fibrosis: Between Aging and Exposure. Front Med (Lausanne) 2020; 7:606462. [PMID: 33282895 PMCID: PMC7689159 DOI: 10.3389/fmed.2020.606462] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 10/23/2020] [Indexed: 12/15/2022] Open
Abstract
To date, chronic pulmonary pathologies represent the third leading cause of death in the elderly population. Evidence-based projections suggest that >65 (years old) individuals will account for approximately a quarter of the world population before the turn of the century. Genomic instability, telomere attrition, epigenetic alterations, loss of proteostasis, deregulated nutrient sensing, mitochondrial dysfunction, cellular senescence, stem cell exhaustion, and altered intercellular communication, are described as the nine “hallmarks” that govern cellular fitness. Any deviation from the normal pattern initiates a complex cascade of events culminating to a disease state. This blueprint, originally employed to describe aberrant changes in cancer cells, can be also used to describe aging and fibrosis. Pulmonary fibrosis (PF) is the result of a progressive decline in injury resolution processes stemming from endogenous (physiological decline or somatic mutations) or exogenous stress. Environmental, dietary or occupational exposure accelerates the pathogenesis of a senescent phenotype based on (1) window of exposure; (2) dose, duration, recurrence; and (3) cells type being targeted. As the lung ages, the threshold to generate an irreversibly senescent phenotype is lowered. However, we do not have sufficient knowledge to make accurate predictions. In this review, we provide an assessment of the literature that interrogates lung epithelial, mesenchymal, and immune senescence at the intersection of aging, environmental exposure and pulmonary fibrosis.
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Affiliation(s)
- Alessandro Venosa
- Department of Pharmacology and Toxicology, University of Utah College of Pharmacy, Salt Lake City, UT, United States
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194
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Zhang L, Tian L, Dai X, Yu H, Wang J, Lei A, Zhu M, Xu J, Zhao W, Zhu Y, Sun Z, Zhang H, Hu Y, Wang Y, Xu Y, Church GM, Huang H, Weng Q, Zhang J. Pluripotent stem cell-derived CAR-macrophage cells with antigen-dependent anti-cancer cell functions. J Hematol Oncol 2020; 13:153. [PMID: 33176869 PMCID: PMC7656711 DOI: 10.1186/s13045-020-00983-2] [Citation(s) in RCA: 172] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 10/27/2020] [Indexed: 12/20/2022] Open
Abstract
The Chimera antigen receptor (CAR)-T cell therapy has gained great success in the clinic. However, there are still major challenges for its wider applications in a variety of cancer types including lack of effectiveness due to the highly complex tumor microenvironment, and the forbiddingly high cost due to the personalized manufacturing procedures. In order to overcome these hurdles, numerous efforts have been spent focusing on optimizing Chimera antigen receptors, engineering and improving T cell capacity, exploiting features of subsets of T cell or NK cells, or making off-the-shelf universal cells. Here, we developed induced pluripotent stem cells (iPSCs)-derived, CAR-expressing macrophage cells (CAR-iMac). CAR expression confers antigen-dependent macrophage functions such as expression and secretion of cytokines, polarization toward the pro-inflammatory/anti-tumor state, enhanced phagocytosis of tumor cells, and in vivo anticancer cell activity. This technology platform for the first time provides an unlimited source of iPSC-derived engineered CAR-macrophage cells which could be utilized to eliminate cancer cells.
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Affiliation(s)
- Li Zhang
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.,Institute of Hematology, Zhejiang University, Hangzhou, 310058, China
| | - Lin Tian
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.,Institute of Hematology, Zhejiang University, Hangzhou, 310058, China
| | - Xiaoyang Dai
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Center for Drug Safety Evaluation and Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Hua Yu
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.,Institute of Hematology, Zhejiang University, Hangzhou, 310058, China
| | - Jiajia Wang
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Center for Drug Safety Evaluation and Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Anhua Lei
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.,Institute of Hematology, Zhejiang University, Hangzhou, 310058, China
| | - Mengmeng Zhu
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.,Institute of Hematology, Zhejiang University, Hangzhou, 310058, China
| | - Jianpo Xu
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.,Institute of Hematology, Zhejiang University, Hangzhou, 310058, China
| | - Wei Zhao
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.,Institute of Hematology, Zhejiang University, Hangzhou, 310058, China
| | - Yuqing Zhu
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.,Institute of Hematology, Zhejiang University, Hangzhou, 310058, China
| | - Zhen Sun
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.,Institute of Hematology, Zhejiang University, Hangzhou, 310058, China
| | - Hao Zhang
- Institute of Hematology, Zhejiang University, Hangzhou, 310058, China.,The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310000, China
| | - Yongxian Hu
- Institute of Hematology, Zhejiang University, Hangzhou, 310058, China.,The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310000, China
| | - Yanlin Wang
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - Yuming Xu
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China
| | - George M Church
- Department of Genetics and Wyss Institute for Biologically Inspired Engineering, Harvard Medical School, Boston, MA, 02115, USA
| | - He Huang
- Institute of Hematology, Zhejiang University, Hangzhou, 310058, China. .,The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310000, China. .,Zhejiang Laboratory for Systems and Precision Medicine, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China.
| | - Qinjie Weng
- Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Center for Drug Safety Evaluation and Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China.
| | - Jin Zhang
- Center for Stem Cell and Regenerative Medicine, Department of Basic Medical Sciences, and The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China. .,Institute of Hematology, Zhejiang University, Hangzhou, 310058, China. .,Zhejiang Laboratory for Systems and Precision Medicine, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China.
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195
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Andreev D, Liu M, Kachler K, Llerins Perez M, Kirchner P, Kölle J, Gießl A, Rauber S, Song R, Aust O, Grüneboom A, Kleyer A, Cañete JD, Ekici A, Ramming A, Finotto S, Schett G, Bozec A. Regulatory eosinophils induce the resolution of experimental arthritis and appear in remission state of human rheumatoid arthritis. Ann Rheum Dis 2020; 80:451-468. [PMID: 33148700 DOI: 10.1136/annrheumdis-2020-218902] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 10/16/2020] [Accepted: 10/17/2020] [Indexed: 12/16/2022]
Abstract
OBJECTIVES Eosinophils possess pro-inflammatory functions in asthma. However, our recent studies have suggested that innate lymphoid cells type 2 (ILC2s) and eosinophils have proresolving properties in rheumatoid arthritis (RA). Nothing is known yet about the mechanisms determining the double-edged role of eosinophils. Therefore, we investigated whether asthma, a paradigm eosinophilic disease, can elicit resolution of chronic arthritis. METHODS Ovalbumin-triggered eosinophilic asthma was combined with K/BxN serum-induced arthritis, where lung and synovial eosinophil subsets were compared by single-cell RNA sequencing (scRNA-seq). To investigate the involvement of the ILC2-interleukin-5 (IL-5) axis, hydrodynamic injection (HDI) of IL-25 and IL-33 plasmids, IL-5 reporter mice and anti-IL-5 antibody treatment were used. In patients with RA, the presence of distinct eosinophil subsets was examined in peripheral blood and synovial tissue. Disease activity of patients with RA with concomitant asthma was monitored before and after mepolizumab (anti-IL-5 antibody) therapy. RESULTS The induction of eosinophilic asthma caused resolution of murine arthritis and joint tissue protection. ScRNA-seq revealed a specific subset of regulatory eosinophils (rEos) in the joints, distinct from inflammatory eosinophils in the lungs. Mechanistically, synovial rEos expanded on systemic upregulation of IL-5 released by lung ILC2s. Eosinophil depletion abolished the beneficial effect of asthma on arthritis. rEos were consistently present in the synovium of patients with RA in remission, but not in active stage. Remarkably, in patients with RA with concomitant asthma, mepolizumab treatment induced relapse of arthritis. CONCLUSION These findings point to a hitherto undiscovered proresolving signature in an eosinophil subset that stimulates arthritis resolution.
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Affiliation(s)
- Darja Andreev
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Mengdan Liu
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Katerina Kachler
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Mireia Llerins Perez
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Philipp Kirchner
- Institute of Human Genetics, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Julia Kölle
- Department of Molecular Pneumology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Andreas Gießl
- Department of Ophthalmology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Simon Rauber
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Rui Song
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Oliver Aust
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Anika Grüneboom
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Arnd Kleyer
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Juan D Cañete
- Departamento de Reumatología, Hospital Clínic de Barcelona e IDIBAPS, Barcelona, Spain
| | - Arif Ekici
- Institute of Human Genetics, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Andreas Ramming
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Susetta Finotto
- Department of Molecular Pneumology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Georg Schett
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Aline Bozec
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
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196
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Jahani M, Dokaneheifard S, Mansouri K. Hypoxia: A key feature of COVID-19 launching activation of HIF-1 and cytokine storm. JOURNAL OF INFLAMMATION-LONDON 2020; 17:33. [PMID: 33139969 PMCID: PMC7594974 DOI: 10.1186/s12950-020-00263-3] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 10/20/2020] [Indexed: 12/12/2022]
Abstract
COVID-19, disease caused by the new coronavirus, SARS-CoV-2, appeared in the end of 2019 and was rapidly spread in most countries. This respiratory virus has different symptoms from moderate to severe, and results in lung pneumonia following acute respiratory distress syndrome (ARDS) and patient’s death in severe cases. ARDS is a severe form of acute lung injury that is caused by high inflammatory response of the innate immunity cells. Hypoxia is the common feature in the inflammatory sites with having various impacts on this condition by induction of some factors such as hypoxia inducible factor-1α (HIF-1α). HIF-1α regulates some important cellular processes including cell proliferation, metabolism and angiogenesis. Furthermore, this factor is activated during the immune responses and plays important roles in the inflammation site by inducing pro-inflammatory cytokines production through immune cells. So, in this study the possible effect of the HIF-1α on the COVID-19 pathogenesis with emphasizes on its role on innate immunity response has been discussed.
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Affiliation(s)
- Mozhgan Jahani
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Sadat Dokaneheifard
- Department of Human Genetics, Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida 33136 USA
| | - Kamran Mansouri
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.,Department of Molecular Medicine, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
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197
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Heaster TM, Humayun M, Yu J, Beebe DJ, Skala MC. Autofluorescence Imaging of 3D Tumor-Macrophage Microscale Cultures Resolves Spatial and Temporal Dynamics of Macrophage Metabolism. Cancer Res 2020; 80:5408-5423. [PMID: 33093167 DOI: 10.1158/0008-5472.can-20-0831] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 07/17/2020] [Accepted: 10/19/2020] [Indexed: 12/24/2022]
Abstract
Macrophages within the tumor microenvironment (TME) exhibit a spectrum of protumor and antitumor functions, yet it is unclear how the TME regulates this macrophage heterogeneity. Standard methods to measure macrophage heterogeneity require destructive processing, limiting spatiotemporal studies of function within the live, intact 3D TME. Here, we demonstrate two-photon autofluorescence imaging of NAD(P)H and FAD to nondestructively resolve spatiotemporal metabolic heterogeneity of individual macrophages within 3D microscale TME models. Fluorescence lifetimes and intensities of NAD(P)H and FAD were acquired at 24, 48, and 72 hours poststimulation for mouse macrophages (RAW264.7) stimulated with IFNγ or IL4 plus IL13 in 2D culture, confirming that autofluorescence measurements capture known metabolic phenotypes. To quantify metabolic dynamics of macrophages within the TME, mouse macrophages or human monocytes (RAW264.7 or THP-1) were cultured alone or with breast cancer cells (mouse polyoma-middle T virus or primary human IDC) in 3D microfluidic platforms. Human monocytes and mouse macrophages in tumor cocultures exhibited significantly different FAD mean lifetimes and greater migration than monocultures at 24, 48, and 72 hours postseeding. In cocultures with primary human cancer cells, actively migrating monocyte-derived macrophages had greater redox ratios [NAD(P)H/FAD intensity] compared with passively migrating monocytes at 24 and 48 hours postseeding, reflecting metabolic heterogeneity in this subpopulation of monocytes. Genetic analyses further confirmed this metabolic heterogeneity. These results establish label-free autofluorescence imaging to quantify dynamic metabolism, polarization, and migration of macrophages at single-cell resolution within 3D microscale models. This combined culture and imaging system provides unique insights into spatiotemporal tumor-immune cross-talk within the 3D TME. SIGNIFICANCE: Label-free metabolic imaging and microscale culture technologies enable monitoring of single-cell macrophage metabolism, migration, and function in the 3D tumor microenvironment.
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Affiliation(s)
- Tiffany M Heaster
- Department of Biomedical Engineering, University of Wisconsin- Madison, Madison, Wisconsin.,Morgridge Institute for Research, Madison, Wisconsin
| | - Mouhita Humayun
- Department of Biomedical Engineering, University of Wisconsin- Madison, Madison, Wisconsin
| | - Jiaquan Yu
- Department of Biomedical Engineering, University of Wisconsin- Madison, Madison, Wisconsin.,Massachusetts Institute of Technology Koch Institute for Integrative Cancer Research, Cambridge, Massachusetts
| | - David J Beebe
- Department of Biomedical Engineering, University of Wisconsin- Madison, Madison, Wisconsin.,The University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, Wisconsin.,Department of Pathology & Laboratory Medicine, University of Wisconsin, Madison, Wisconsin
| | - Melissa C Skala
- Department of Biomedical Engineering, University of Wisconsin- Madison, Madison, Wisconsin. .,Morgridge Institute for Research, Madison, Wisconsin.,The University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, Wisconsin
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198
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Pseudomonas aeruginosa Planktonic- and Biofilm-Conditioned Media Elicit Discrete Metabolic Responses in Human Macrophages. Cells 2020; 9:cells9102260. [PMID: 33050176 PMCID: PMC7650675 DOI: 10.3390/cells9102260] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 09/26/2020] [Accepted: 10/06/2020] [Indexed: 12/18/2022] Open
Abstract
Macrophages (MΦs) are prevalent innate immune cells, present throughout human bodily tissues where they orchestrate innate and adaptive immune responses to maintain cellular homeostasis. MΦs have the capacity to display a wide array of functional phenotypes due to different microenvironmental cues, particularly soluble bacterial secretory products. Recent evidence has emerged demonstrating that metabolism supports MΦ function and plasticity, in addition to energy and biomolecular precursor production. In this study, 1D 1H-NMR-based metabolomics was used to identify the metabolic pathways that are differentially altered following primary human monocyte-derived MΦ exposure to P. aeruginosa planktonic- and biofilm-conditioned media (PCM and BCM). Metabolic profiling of PCM- and BCM-exposed MΦs indicated a significant increase in glycolytic metabolism, purine biosynthesis, and inositol phosphate metabolism. In addition, these metabolic patterns suggested that BCM-exposed MΦs exhibit a hyperinflammatory metabolic profile with reduced glycerol metabolism and elevated catabolism of lactate and amino acids, relative to PCM-exposed MΦs. Altogether, our study reveals novel findings concerning the metabolic modulation of human MΦs after exposure to secretory microbial products and contributes additional knowledge to the field of immunometabolism in MΦs.
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199
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Zhu W, Lönnblom E, Förster M, Johannesson M, Tao P, Meng L, Lu S, Holmdahl R. Natural polymorphism of Ym1 regulates pneumonitis through alternative activation of macrophages. SCIENCE ADVANCES 2020; 6:6/43/eaba9337. [PMID: 33087360 PMCID: PMC7577715 DOI: 10.1126/sciadv.aba9337] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 09/02/2020] [Indexed: 05/12/2023]
Abstract
We have positionally cloned the Ym1 gene, with a duplication and a promoter polymorphism, as a major regulator of inflammation. Mice with the RIIIS/J haplotype, with the absence of Ym1 expression, showed reduced susceptibility to mannan-enhanced collagen antibody-induced arthritis and to chronic arthritis induced by intranasal exposure of mannan. Depletion of lung macrophages alleviated arthritis, whereas intranasal supplement of Ym1 protein to Ym1-deficient mice reversed the disease, suggesting a key role of Ym1 for inflammatory activity by lung macrophages. Ym1-deficient mice with pneumonitis had less eosinophil infiltration, reduced production of type II cytokines and IgG1, and skewing of macrophages toward alternative activation due to enhanced STAT6 activation. Proteomics analysis connected Ym1 polymorphism with changed lipid metabolism. Induced PPAR-γ and lipid metabolism in Ym1-deficient macrophages contributed to cellular polarization. In conclusion, the natural polymorphism of Ym1 regulates alternative activation of macrophages associated with pulmonary inflammation.
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Affiliation(s)
- Wenhua Zhu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 710061 Xi'an, China
- Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education of China, 710061 Xi'an, China
- The National Local Joint Engineering Research Center of Biodiagnostics and Biotherapy, the Second Affiliated Hospital of Xi'an Jiaotong University, 710004 Xi'an, China
- Section for Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm 171 77, Sweden
| | - Erik Lönnblom
- Section for Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm 171 77, Sweden
| | - Michael Förster
- Section for Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm 171 77, Sweden
| | - Martina Johannesson
- Section for Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm 171 77, Sweden
| | - Pei Tao
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 710061 Xi'an, China
- Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education of China, 710061 Xi'an, China
| | - Liesu Meng
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 710061 Xi'an, China.
- Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education of China, 710061 Xi'an, China
- The National Local Joint Engineering Research Center of Biodiagnostics and Biotherapy, the Second Affiliated Hospital of Xi'an Jiaotong University, 710004 Xi'an, China
- Section for Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm 171 77, Sweden
| | - Shemin Lu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, 710061 Xi'an, China
- Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education of China, 710061 Xi'an, China
- Section for Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm 171 77, Sweden
| | - Rikard Holmdahl
- The National Local Joint Engineering Research Center of Biodiagnostics and Biotherapy, the Second Affiliated Hospital of Xi'an Jiaotong University, 710004 Xi'an, China.
- Section for Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm 171 77, Sweden
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200
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Puffing of Turmeric ( Curcuma longa L.) Enhances its Anti-Inflammatory Effects by Upregulating Macrophage Oxidative Phosphorylation. Antioxidants (Basel) 2020; 9:antiox9100931. [PMID: 33003300 PMCID: PMC7600901 DOI: 10.3390/antiox9100931] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 09/23/2020] [Accepted: 09/26/2020] [Indexed: 02/07/2023] Open
Abstract
Turmeric (Curcuma longa L.), a widely used spice, has anti-inflammatory properties and other health benefits, but the detailed mechanisms of these effects are still poorly understood. Recent advances in assessment of cellular energy metabolism have revealed that macrophage mitochondrial respiration is critical in inflammatory responses. In an effort to enhance the anti-inflammatory function of turmeric with a simple processing method, extract of puffed turmeric was investigated for effect on macrophage energy metabolism. The high-performance liquid chromatography analysis revealed that puffing of turmeric significantly induced the degradation of curcumin to smaller active compounds including vanillic acid, vanillin and 4-vinylguaiacol. The in vitro consumption of oxygen as expressed by the oxygen consumption rate (OCR) was significantly downregulated following lipopolysaccharides stimulation in RAW 264.7 macrophages. Puffed turmeric extract, but not the non-puffed control, reversed the LPS-induced decrease in OCR, resulting in downregulated transcription of the pro-inflammatory genes cyclooxygenase-2 and inducible nitric oxide synthase. Dietary intervention in high-fat diet-induced obese mice revealed that both control and puffed turmeric have anti-obesity effects in vivo, but only puffed turmeric exhibited reciprocal downregulation of the inflammatory marker cluster of differentiation (CD)11c and upregulation of the anti-inflammatory marker CD206 in bone marrow-derived macrophages. Puffed turmeric extract further modulated the low-density lipoprotein/high-density lipoprotein cholesterol ratio toward that of the normal diet group, indicating that puffing is a simple, advantageous processing method for turmeric as an anti-inflammatory food ingredient.
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