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Liu S, Zhang B, Zhou J, Lv J, Zhang J, Li X, Yang W, Guo Y. Inhibition of differentiation of monocyte-derived macrophages toward an M2-Like phenotype May Be a neglected mechanism of β-AR receptor blocker therapy for atherosclerosis. Front Pharmacol 2024; 15:1378787. [PMID: 38903990 PMCID: PMC11188457 DOI: 10.3389/fphar.2024.1378787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 05/13/2024] [Indexed: 06/22/2024] Open
Abstract
The clinical efficacy of adrenergic β-receptor (β-AR) blockers in significantly stabilizing atherosclerotic plaques has been extensively supported by evidence-based medical research; however, the underlying mechanism remains unclear. Recent findings have highlighted the impact of lipid-induced aberrant polarization of macrophages during normal inflammatory-repair and regenerative processes on atherosclerosis formation and progression. In this review, we explore the relationship between macrophage polarization and atherosclerosis, as well as the influence of β-AR blockers on macrophage polarization. Based on the robust evidence supporting the use of β-AR blockers for treating atherosclerosis, we propose that their main mechanism involves inhibiting monocyte-derived macrophage differentiation towards an M2-like phenotype.
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Affiliation(s)
| | | | - Jingqun Zhou
- Affiliated Renhe Hospital, China Three Gorges University, Yichang, China
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2
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Shirakawa K, Kobayashi E, Ichihara G, Kitakata H, Katsumata Y, Sugai K, Hakamata Y, Sano M. H 2 Inhibits the Formation of Neutrophil Extracellular Traps. JACC Basic Transl Sci 2022; 7:146-161. [PMID: 35257042 PMCID: PMC8897170 DOI: 10.1016/j.jacbts.2021.11.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 11/05/2021] [Accepted: 11/06/2021] [Indexed: 01/08/2023]
Abstract
NETs have been implicated as therapeutic targets to address inflammation and thrombotic tissue damage in conditions such as sepsis, acute respiratory disease syndrome, COVID-19, and CVDs. H2 has been clinically and experimentally proven to ameliorate inflammation; however, the underlying molecular mechanisms remain elusive. Compared with control neutrophils, PMA-stimulated human neutrophils exposed to H2 exhibited reduced citrullination of histones and release of NET components; mechanistically, H2-mediated neutralization of HOCl produced during oxidative bursts suppresses DNA damage. Inhalation of H2 inhibited the formation and release of NET components in the blood and BAL of the LPS-induced sepsis in mice and aged mini pigs. H2 therapy is potentially a new therapeutic strategy for inflammatory diseases involving NETs associated with excessive neutrophil activation.
Neutrophil extracellular traps (NETs) contribute to inflammatory pathogenesis in numerous conditions, including infectious and cardiovascular diseases, and have attracted attention as potential therapeutic targets. H2 acts as an antioxidant and has been clinically and experimentally proven to ameliorate inflammation. This study was performed to investigate whether H2 could inhibit NET formation and excessive neutrophil activation. Neutrophils isolated from the blood of healthy volunteers were stimulated with phorbol-12-myristate-13-acetate (PMA) or the calcium ionophore A23187 in H2-exposed or control media. Compared with control neutrophils, PMA- or A23187-stimulated human neutrophils exposed to H2 exhibited reduced neutrophil aggregation, citrullination of histones, membrane disruption by chromatin complexes, and release of NET components. CXCR4high neutrophils are highly prone to NETs, and H2 suppressed Ser-139 phosphorylation in H2AX, a marker of DNA damage, thereby suppressing the induction of CXCR4 expression. H2 suppressed both myeloperoxidase chlorination activity and production of reactive oxygen species to the same degree as N-acetylcysteine and ascorbic acid, while showing a more potent ability to inhibit NET formation than these antioxidants do in PMA-stimulated neutrophils. Although A23187 formed NETs in a reactive oxygen species–independent manner, H2 inhibited A23187-induced NET formation, probably via direct inhibition of peptidyl arginine deiminase 4-mediated histone citrullination. Inhalation of H2 inhibited the formation and release of NET components in the blood and bronchoalveolar lavage fluid in animal models of lipopolysaccharide-induced sepsis (mice and aged mini pigs). Thus, H2 therapy can be a novel therapeutic strategy for NETs associated with excessive neutrophil activation.
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Key Words
- BAL, bronchoalveolar lavage
- CVD, cardiovascular disease
- CitH3, citrullinated histone H3
- H2
- HOCl, hypochlorous acid
- LPS, lipopolysaccharide
- MI, myocardial infarction
- MPO, myeloperoxidase
- NAC, N-acetyl-L-cysteine
- NET, neutrophil extracellular trap
- PA, pulmonary artery
- PADI4, peptidyl arginine deiminase 4
- PMA, phorbol-12-myristate-13-acetate
- ROS, reactive oxygen species
- dsDNA, double-stranded DNA
- neutrophil extracellular traps
- phorbol-12-myristate-13-acetate
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Affiliation(s)
- Kohsuke Shirakawa
- Department of Cardiovascular Medicine, Graduate School of Medicine, Juntendo University, Tokyo, Japan.,Center for Molecular Hydrogen Medicine, Keio University, Tokyo, Japan.,Department of Cardiology, School of Medicine, Keio University, Tokyo, Japan
| | - Eiji Kobayashi
- Center for Molecular Hydrogen Medicine, Keio University, Tokyo, Japan.,Department of Cardiology, School of Medicine, Keio University, Tokyo, Japan.,Department of Organ Fabrication, School of Medicine, Keio University, Tokyo, Japan
| | - Genki Ichihara
- Department of Cardiology, School of Medicine, Keio University, Tokyo, Japan
| | - Hiroki Kitakata
- Department of Cardiology, School of Medicine, Keio University, Tokyo, Japan
| | - Yoshinori Katsumata
- Center for Molecular Hydrogen Medicine, Keio University, Tokyo, Japan.,Department of Cardiology, School of Medicine, Keio University, Tokyo, Japan
| | - Kazuhisa Sugai
- Department of Basic Sciences, Faculty of Veterinary Sciences, School of Veterinary Nursing and Technology, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Yoji Hakamata
- Department of Basic Sciences, Faculty of Veterinary Sciences, School of Veterinary Nursing and Technology, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Motoaki Sano
- Center for Molecular Hydrogen Medicine, Keio University, Tokyo, Japan.,Department of Cardiology, School of Medicine, Keio University, Tokyo, Japan
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Gruber EJ, Aygun AY, Leifer CA. Macrophage uptake of oxidized and acetylated low-density lipoproteins and generation of reactive oxygen species are regulated by linear stiffness of the growth surface. PLoS One 2021; 16:e0260756. [PMID: 34914760 PMCID: PMC8675690 DOI: 10.1371/journal.pone.0260756] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 11/16/2021] [Indexed: 01/18/2023] Open
Abstract
Macrophages are key players in the development of atherosclerosis: they scavenge lipid, transform into foam cells, and produce proinflammatory mediators. At the same time, the arterial wall undergoes profound changes in its mechanical properties. We recently showed that macrophage morphology and proinflammatory potential are regulated by the linear stiffness of the growth surface. Here we asked whether linear stiffness also regulates lipid uptake by macrophages. We cultured murine bone marrow-derived macrophages (BMMs) on polyacrylamide gels modeling stiffness of healthy (1kPa) and diseased (10-150kPa) blood vessels. In unprimed BMMs, increased linear stiffness increased uptake of oxidized (oxLDL) and acetylated (acLDL) low density lipoproteins and generation of reactive oxygen species, but did not alter phagocytosis of bacteria or silica particles. Macrophages adapted to stiff growth surfaces had increased mRNA and protein expression of two key lipoprotein receptors: CD36 and scavenger receptor b1. Regulation of the lipoprotein receptor, lectin-like receptor for ox-LDL, was more complex: mRNA expression decreased but surface protein expression increased with increased stiffness. Focal adhesion kinase was required for maximal uptake of oxLDL, but not of acLDL. Uptake of oxLDL and acLDL was independent of rho-associated coiled coil kinase. Through pharmacologic inhibition and genetic deletion, we found that transient receptor potential vanilloid 4 (TRPV4), a mechanosensitive ion channel, plays an inhibitory role in the uptake of acLDL, but not oxLDL. Together, these results implicate mechanical signaling in the uptake of acLDL and oxLDL, opening up the possibility of new pharmacologic targets to modulate lipid uptake by macrophages in vivo.
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Affiliation(s)
- Erika J. Gruber
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Ali Y. Aygun
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
| | - Cynthia A. Leifer
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, New York, United States of America
- * E-mail:
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Titmarsh DM, Nurcombe V, Cheung C, Cool SM. Vascular Cells and Tissue Constructs Derived from Human Pluripotent Stem Cells for Toxicological Screening. Stem Cells Dev 2019; 28:1347-1364. [PMID: 31397206 DOI: 10.1089/scd.2018.0246] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The ability of human stem cells to generate somatic cell lineages makes them ideal candidates for use in toxicological testing and eventually, preclinical drug development. Such resources would support an evolution away from human primary cells or research animal models, which suffer from variability and poor predictability, toward off-the-shelf assays of chemical toxicity and drug efficacy using human cells and tissues. To this end, we generated vascular cell populations (smooth muscle cells and endothelial cells) from human pluripotent stem cells (hPSCs), arranged them into 3D co-cultures within supportive gel matrices, and directed their propensity for self-organization resembling microvasculature. The resulting vascular cell populations and co-cultured constructs were then arrayed in high throughput and used for screening a library of environmental and clinical chemical agents for immunological and toxicological responses. The screen effectively stratified the chemicals into various levels of toxicity, with both cell type-specific and co-culture-dependent responses observed. Thus, hPSC-derived vascular cells and constructs could be progressed further toward use in toxicant and drug screening.
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Affiliation(s)
- Drew M Titmarsh
- Institute of Medical Biology and Agency for Science Technology and Research (A*STAR), Singapore, Singapore
| | - Victor Nurcombe
- Institute of Medical Biology and Agency for Science Technology and Research (A*STAR), Singapore, Singapore.,Lee Kong Chian School of Medicine, Nanyang Technological University-Imperial College London, Singapore, Singapore
| | - Christine Cheung
- Lee Kong Chian School of Medicine, Nanyang Technological University-Imperial College London, Singapore, Singapore.,Institute of Molecular and Cell Biology, Agency for Science Technology and Research (A*STAR), Singapore, Singapore
| | - Simon M Cool
- Institute of Medical Biology and Agency for Science Technology and Research (A*STAR), Singapore, Singapore.,Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
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Combining use of Phillyrin and autophagy blocker alleviates laryngeal squamous cell carcinoma via AMPK/mTOR/p70S6K signaling. Biosci Rep 2019; 39:BSR20190459. [PMID: 31147451 PMCID: PMC6616054 DOI: 10.1042/bsr20190459] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 05/07/2019] [Accepted: 05/21/2019] [Indexed: 12/15/2022] Open
Abstract
Phillyrin (PHN), one of the major active constituents of Forsythia suspensa and F. koreana, has been reported to produce antioxidant, antibacterial, anti-obesity and anti-inflammatory effects. However, no study has demonstrated the role of PHN in laryngeal squamous cell carcinoma (LSCC). We aimed to investigate the effects of PHN on the proliferation and apoptosis of HEp-2 cells. In the present study, PHN alone showed little effect on HEp-2 cell proliferation and apoptosis. Subsequent tests showed that PHN could largely enhance the level of autophagy on HEp-2 cells. Combining use of PHN and autophagy blockers including 3-methyladenine (3-MA) and chloroquine (CQ) significantly inhibited HEp-2 cell proliferation in a dose- and time-dependent manner and induced apoptosis after 24 h in a dose-dependent manner. Additionally, we found that the possible underlying molecular mechanism of PHN-induced autophagy might be through the AMPK/mTOR/p70S6K signaling pathway. Taken together, our study indicates that combining use of PHN and autophagy blockers may serve as a novel strategy in LSCC treatment.
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Chistiakov DA, Melnichenko AA, Orekhov AN, Bobryshev YV. How do macrophages sense modified low-density lipoproteins? Int J Cardiol 2017; 230:232-240. [DOI: 10.1016/j.ijcard.2016.12.164] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 12/19/2016] [Accepted: 12/25/2016] [Indexed: 01/18/2023]
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Cao J, Ye B, Lin L, Tian L, Yang H, Wang C, Huang W, Huang Z. Curcumin Alleviates oxLDL Induced MMP-9 and EMMPRIN Expression through the Inhibition of NF-κB and MAPK Pathways in Macrophages. Front Pharmacol 2017; 8:62. [PMID: 28261097 PMCID: PMC5306337 DOI: 10.3389/fphar.2017.00062] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 01/30/2017] [Indexed: 12/22/2022] Open
Abstract
Rupture of vulnerable atherosclerotic plaques is the leading cause of acute myocardial infarction (AMI) and unstable angina pectoris (UA). However, it still lacks an effective therapy to stabilize the vulnerable atherosclerotic plaques. Numerous reports have shown that upregulation of MMP-9 (matrix metalloproteinase-9) and EMMPRIN (extracellular matrix metalloproteinase inducer) in macrophages is involved in the progression and development of vulnerable plaques. Here we evaluated the impact of curcumin on the expression of MMP-9 and EMMPRIN in macrophages. Macrophages were pretreated with curcumin or specific inhibitors (p38 MAPK inhibitor, NF-κB p65 inhibitor) for 1 h, then cells were cultured with oxLDL for indicated time. Real-time PCR and Western blot analysis were used to evaluate the expression of mRNA and proteins. Translocation of NF-κB p65 was detected by using laser confocal microscopy. Here we showed that curcumin attenuated the MMP-9 and EMMPRIN expression in oxLDL stimulated macrophages. Further studies revealed that curcumin inhibited oxLDL induced NF-κB activation and p38 MAPK phosphorylation. These findings illustrated that curcumin can inhibit the expression of EMMPRIN and MMP-9 in oxLDL stimulated macrophages through down regulation of NF-κB and p38 MAPK signaling pathways, which might be the molecular mechanism for the anti-atherosclerotic effect of curcumin.
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Affiliation(s)
- Jiatian Cao
- Division of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan UniversityShanghai, China; Division of Cardiology, School of Medicine, Shanghai Ninth Hospital, Shanghai Jiao Tong UniversityShanghai, China
| | - Bozhi Ye
- Division of Cardiology, The Key Lab of Cardiovascular Disease of Wenzhou, The First Affiliated Hospital of WenZhou Medical University WenZhou, China
| | - Lu Lin
- Division of Cardiology, The Key Lab of Cardiovascular Disease of Wenzhou, The First Affiliated Hospital of WenZhou Medical University WenZhou, China
| | - Lei Tian
- Division of Cardiology, School of Medicine, Shanghai Ninth Hospital, Shanghai Jiao Tong University Shanghai, China
| | - Hongbo Yang
- Division of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University Shanghai, China
| | - Changqian Wang
- Division of Cardiology, School of Medicine, Shanghai Ninth Hospital, Shanghai Jiao Tong University Shanghai, China
| | - Weijian Huang
- Division of Cardiology, The Key Lab of Cardiovascular Disease of Wenzhou, The First Affiliated Hospital of WenZhou Medical University WenZhou, China
| | - Zhouqing Huang
- Division of Cardiology, The Key Lab of Cardiovascular Disease of Wenzhou, The First Affiliated Hospital of WenZhou Medical University WenZhou, China
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Korolenko T, Pisareva E, Filyushina E, Johnston T, Machova E. Serum cystatin C and chitotriosidase in acute P-407 induced dyslipidemia: Can they serve as potential early biomarkers for atherosclerosis? ACTA ACUST UNITED AC 2015; 67:459-66. [DOI: 10.1016/j.etp.2015.06.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Revised: 05/21/2015] [Accepted: 06/13/2015] [Indexed: 02/03/2023]
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Macrophage Differentiation from Monocytes Is Influenced by the Lipid Oxidation Degree of Low Density Lipoprotein. Mediators Inflamm 2015; 2015:235797. [PMID: 26294848 PMCID: PMC4532889 DOI: 10.1155/2015/235797] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 07/05/2015] [Accepted: 07/06/2015] [Indexed: 12/15/2022] Open
Abstract
LDL plays an important role in atherosclerotic plaque formation and macrophage differentiation. However, there is no report regarding the oxidation degree of LDL and macrophage differentiation. Our study has shown that the differentiation into M1 or M2 macrophages is related to the lipid oxidation level of LDL. Based on the level of lipid peroxidation, LDL is classified into high-oxidized LDL (hi-oxLDL) and low-oxidized LDL (low-oxLDL). The differentiation profiles of macrophages were determined by surface receptor expression and cytokine secretion profiles. Low-oxLDL induced CD86 expression and production of TNF-α and IL-12p40 in THP-1 cells, indicating an M1 macrophage phenotype. Hi-oxLDL induced mannose receptor expression and production of IL-6 and monocyte chemoattractant protein-1, which mostly match the phenotype of M2 macrophages. Further supporting evidence for an M2 polarization by hi-oxLDL was the induction of LOX-1 in THP-1 cells treated with hi-oxLDL but not with low-oxLDL. Similar results were obtained in primary human monocytes. Therefore, our results strongly suggest that the oxidation degree of LDL influences the differentiation of monocytes into M1 or M2 macrophages and determines the inflammatory fate in early stages of atherosclerosis.
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