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Maffia P, Mauro C, Case A, Kemper C. Canonical and non-canonical roles of complement in atherosclerosis. Nat Rev Cardiol 2024:10.1038/s41569-024-01016-y. [PMID: 38600367 DOI: 10.1038/s41569-024-01016-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/18/2024] [Indexed: 04/12/2024]
Abstract
Cardiovascular diseases are the leading cause of death globally, and atherosclerosis is the major contributor to the development and progression of cardiovascular diseases. Immune responses have a central role in the pathogenesis of atherosclerosis, with the complement system being an acknowledged contributor. Chronic activation of liver-derived and serum-circulating canonical complement sustains endothelial inflammation and innate immune cell activation, and deposition of complement activation fragments on inflamed endothelial cells is a hallmark of atherosclerotic plaques. However, increasing evidence indicates that liver-independent, cell-autonomous and non-canonical complement activities are underappreciated contributors to atherosclerosis. Furthermore, complement activation can also have atheroprotective properties. These specific detrimental or beneficial contributions of the complement system to the pathogenesis of atherosclerosis are dictated by the location of complement activation and engagement of its canonical versus non-canonical functions in a temporal fashion during atherosclerosis progression. In this Review, we summarize the classical and the emerging non-classical roles of the complement system in the pathogenesis of atherosclerosis and discuss potential strategies for therapeutic modulation of complement for the prevention and treatment of atherosclerotic cardiovascular disease.
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Affiliation(s)
- Pasquale Maffia
- School of Infection & Immunity, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Naples, Italy
- Africa-Europe Cluster of Research Excellence (CoRE) in Non-Communicable Diseases & Multimorbidity, African Research Universities Alliance (ARUA) & The Guild, Accra, Ghana
| | - Claudio Mauro
- Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Ayden Case
- Heart and Lung Research Institute, University of Cambridge, Cambridge, UK
- Complement and Inflammation Research Section, National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD, USA
| | - Claudia Kemper
- Complement and Inflammation Research Section, National Heart, Lung, and Blood Institute (NHLBI), National Institutes of Health (NIH), Bethesda, MD, USA.
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Sharma P, Roy A, Dhamija RK, Bhushan S, Baswal K, Kulandaisamy R, Yadav S, Kumar S, Inampudi KK. A comprehensive proteomic profiling of urinary exosomes and the identification of early non-invasive biomarker in patients with coronary artery disease. J Proteomics 2024; 293:105059. [PMID: 38151158 DOI: 10.1016/j.jprot.2023.105059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 12/04/2023] [Accepted: 12/14/2023] [Indexed: 12/29/2023]
Abstract
Urinary small extracellular vesicles or exosomes (uEVs) source could be an emerging trove of biomarkers in coronary artery disease (CAD). It is a chronic inflammatory disease having a long asymptomatic phase of fatty-fibrous development in arteries leading to angina, myocardial infarction, and death. Our study was aimed at identifying differential protein expression profiling of uEVs in CAD. We collected urine samples of CAD patients (n = 41) age 18-65 years and gender matched healthy controls (n = 41). We isolated uEVs using differential ultracentrifugation. Further, uEV samples were characterized by western blotting exosome markers (Flotillin, TSG, CD63, and CD9), nano tracking analysis, and transmission and scanning electron microscopy. A total of 508 proteins were identified by iTRAQ-based mass spectrometry. We observed protein expression levels of AZGP1, SEMG1/2, ORM1, IGL, SERPINA5, HSPG2, prosaposin, gelsolin, and CD59 were upregulated, and UMOD, KNG1, AMBP, prothrombin, and TF were downregulated. Protein-protein interactions, gene ontology and pathway analysis were performed to functionally annotate identified uEVs proteins. A novel uEVs differential protein signature is shown. On validating UMOD protein by ELISA in two clinically different CAD, stable-CAD patients had lower levels than healthy controls whereas recent myocardial infarction patients had lowest. Our findings suggest UMOD importance as early diagnostic biomarker. SIGNIFICANCE: Coronary artery disease is a chronic inflammatory disease caused by gradual deposition of cholesterol and fat along with other proteins to develop plaque inside arteries. This further leads to blockage of artery, heart attack and death. There are no identifiable early biomarkers to diagnose this. For the first time, we have identified the differentially expressed proteins isolated from non-invasive uEV of CAD patients compared to healthy controls by using MS Orbitrap and iTRAQ labelling of peptides. We have identified decreased levels of UMOD protein in CAD. These findings have been confirmed by ELISA. Furthermore, the levels of UMOD were observed as more highly decreased in recent myocardial infarction CAD patients, indicating the importance of this protein as an early diagnostic biomarker. Conclusively, our study represents a non-invasive urinary EVs trove of differentially expressed proteins in CAD. This will form a groundwork for understanding the pathophysiology of CAD and will help in future translational research utilizing uEVs.
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Affiliation(s)
- Pratibha Sharma
- Human Behaviour Department, Institute of Human Behaviour and Allied Sciences, Dilshad Garden, New Delhi, India; Department of Biophysics, All India Institute of Medical Sciences, New Delhi, India.
| | - Ambuj Roy
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India
| | - Rajinder K Dhamija
- Human Behaviour Department, Institute of Human Behaviour and Allied Sciences, Dilshad Garden, New Delhi, India
| | - Sudha Bhushan
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India
| | - Kamal Baswal
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi, India
| | | | - Satyavir Yadav
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India
| | - Saroj Kumar
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi, India; Department of Health Education and Technology, Luleå University of Technology, Sweden
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Uzun G, Unal A, Basarici I, Kucuk M, Donmez L, Nacitarhan C, Özdem S. Can lipid mediators and free fatty acids guide acute coronary syndrome diagnosis and treatment? Lab Med 2024; 55:88-95. [PMID: 37307428 DOI: 10.1093/labmed/lmad042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023] Open
Abstract
OBJECTIVE The aim of this study was to investigate fatty acids, lipid mediator levels, and the desaturase index rates on different acute coronary syndrome types and their possible relationship with routine lipid parameters. METHODS The study included 81 patients with myocardial infarction (MI), 20 patients with unstable angina pectoris, and 31 healthy people. Fatty acids, CD59, lipoxin A4, 8-isoprostane, serum lipids, albumin, C-reactive protein (CRP), and high sensitive troponin levels were measured in all participants. RESULTS When the fatty acid groups were evaluated as a ratio of albumin, MUFA/albumin and SFA/albumin ratios were significantly higher in the MI group compared to the control group. Although CD59 and lipoxin A4 levels were higher in the control group, there was no significant differences between the groups. When lipoxin A4/CRP and CD59/CRP ratios were evaluated, the results were significantly lower than those in the control group. CONCLUSION Lipid mediators may be useful in treating atherosclerosis by contributing to the resolution of inflammation.
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Affiliation(s)
- Gulbahar Uzun
- Department of Medical Biochemistry, Akdeniz University Medical Faculty, Antalya, Turkey
| | - Aslihan Unal
- Department of Emergency Medicine, Akdeniz University Medical Faculty, Antalya, Turkey
| | - Ibrahim Basarici
- Department of Cardiology, Akdeniz University Medical Faculty, Antalya, Turkey
| | - Murathan Kucuk
- Department of Cardiology, Akdeniz University Medical Faculty, Antalya, Turkey
| | - Levent Donmez
- Department of Public Health, and, Akdeniz University Medical Faculty, Antalya, Turkey
| | - Cahit Nacitarhan
- Department of Clinical Pharmacology, Akdeniz University Medical Faculty, Antalya, Turkey
| | - Sebahat Özdem
- Department of Medical Biochemistry, Akdeniz University Medical Faculty, Antalya, Turkey
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Mourino-Alvarez L, Perales-Sanchez I, Berna-Rico E, Abbad-Jaime de Aragon C, Corbacho-Alonso N, Sastre-Oliva T, Juarez-Alia C, Ballester-Martinez A, Castellanos-Gonzalez M, Llamas-Velasco M, Jaen P, Solis J, Fernandez-Friera L, Mehta NN, Gelfand JM, Barderas MG, Gonzalez-Cantero A. Association of the Complement System with Subclinical Atherosclerosis in Psoriasis: Findings from an Observational Cohort Study. J Invest Dermatol 2023:S0022-202X(23)03112-3. [PMID: 38036288 DOI: 10.1016/j.jid.2023.10.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 10/03/2023] [Accepted: 10/18/2023] [Indexed: 12/02/2023]
Abstract
Psoriasis is a chronic and inflammatory disease that affects the skin and joints and is associated with multiple comorbidities and cardiovascular risk factors. Consequently, patients with psoriasis have an increased risk of cardiovascular diseases such as atherosclerosis, a chronic pathology that shares common inflammatory and immune-response mechanisms with psoriasis, including vascular inflammation and complement activation. To better understand the relationship between atherosclerosis and psoriasis, a proteomics study followed by a bioinformatics analysis was carried out, with a subsequent validation step using ELISA and western blotting. When the plasma from patients with psoriasis alone was compared with that from patients with psoriasis and atherosclerosis, 31 proteins of interest related to the complement system and oxygen transport were identified. After the validation phase, 11 proteins appeared to define the presence of subclinical atherosclerosis in patients with psoriasis, indicating the importance of complement cascades in the development of atherosclerotic plaques in individuals with psoriasis. These results are a step forward in understanding the pathological pathways implicated in the cardiovascular risk associated with this population, which may represent an interesting starting point for developing predictive tools that improve the follow-up of these patients and design more effective therapies.
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Affiliation(s)
- Laura Mourino-Alvarez
- Department of Vascular Physiopathology, Hospital Nacional de Paraplejicos, SESCAM, Toledo, Spain; Department of Vascular Physiopathology, Hospital Nacional de Paraplejicos, IDISCAM, Toledo, Spain
| | - Inés Perales-Sanchez
- Department of Vascular Physiopathology, Hospital Nacional de Paraplejicos, SESCAM, Toledo, Spain; Department of Vascular Physiopathology, Hospital Nacional de Paraplejicos, IDISCAM, Toledo, Spain
| | - Emilio Berna-Rico
- Department of Dermatology, Hospital Universitario Ramon y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria, Madrid, Spain
| | - Carlota Abbad-Jaime de Aragon
- Department of Dermatology, Hospital Universitario Ramon y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria, Madrid, Spain
| | - Nerea Corbacho-Alonso
- Department of Vascular Physiopathology, Hospital Nacional de Paraplejicos, SESCAM, Toledo, Spain; Department of Vascular Physiopathology, Hospital Nacional de Paraplejicos, IDISCAM, Toledo, Spain
| | - Tamara Sastre-Oliva
- Department of Vascular Physiopathology, Hospital Nacional de Paraplejicos, SESCAM, Toledo, Spain; Department of Vascular Physiopathology, Hospital Nacional de Paraplejicos, IDISCAM, Toledo, Spain
| | - Cristina Juarez-Alia
- Department of Vascular Physiopathology, Hospital Nacional de Paraplejicos, SESCAM, Toledo, Spain; Department of Vascular Physiopathology, Hospital Nacional de Paraplejicos, IDISCAM, Toledo, Spain
| | - Asunción Ballester-Martinez
- Department of Dermatology, Hospital Universitario Ramon y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria, Madrid, Spain
| | | | - Mar Llamas-Velasco
- Department of Dermatology, Hospital Universitario de la Princesa, Madrid, Spain
| | - Pedro Jaen
- Department of Dermatology, Hospital Universitario Ramon y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria, Madrid, Spain
| | - Jorge Solis
- Department of Cardiology, Hospital Universitario Doce de Octubre, Madrid, Spain; Atria Clinic, Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Instituto de Salud Carlos III, Madrid, Spain
| | - Leticia Fernandez-Friera
- Atria Clinic, Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Instituto de Salud Carlos III, Madrid, Spain; HM Hospitales-Centro Integral de Enfermedades Cardiovasculares HM-CIEC, Madrid, Spain
| | - Neha N Mehta
- Department of Cardiology, The George Washington University School of Medicine and Health Sciences, Washington, District of Columbia, USA
| | - Joel M Gelfand
- Department of Dermatology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA; Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Maria G Barderas
- Department of Vascular Physiopathology, Hospital Nacional de Paraplejicos, SESCAM, Toledo, Spain; Department of Vascular Physiopathology, Hospital Nacional de Paraplejicos, IDISCAM, Toledo, Spain.
| | - Alvaro Gonzalez-Cantero
- Department of Dermatology, Hospital Universitario Ramon y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria, Madrid, Spain; Faculty of Medicine, Universidad Francisco de Vitoria, Madrid, Spain.
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Liu R, Qin S, Li W. Phycocyanin: Anti-inflammatory effect and mechanism. Biomed Pharmacother 2022; 153:113362. [DOI: 10.1016/j.biopha.2022.113362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 06/24/2022] [Accepted: 06/28/2022] [Indexed: 11/28/2022] Open
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Abstract
Efficient neurotransmission is essential for organism survival and is enhanced by myelination. However, the genes that regulate myelin and myelinating glial cell development have not been fully characterized. Data from our lab and others demonstrates that cd59, which encodes for a small GPI-anchored glycoprotein, is highly expressed in developing zebrafish, rodent, and human oligodendrocytes (OLs) and Schwann cells (SCs), and that patients with CD59 dysfunction develop neurological dysfunction during early childhood. Yet, the function of Cd59 in the developing nervous system is currently undefined. In this study, we demonstrate that cd59 is expressed in a subset of developing SCs. Using cd59 mutant zebrafish, we show that developing SCs proliferate excessively and nerves may have reduced myelin volume, altered myelin ultrastructure, and perturbed node of Ranvier assembly. Finally, we demonstrate that complement activity is elevated in cd59 mutants and that inhibiting inflammation restores SC proliferation, myelin volume, and nodes of Ranvier to wildtype levels. Together, this work identifies Cd59 and developmental inflammation as key players in myelinating glial cell development, highlighting the collaboration between glia and the innate immune system to ensure normal neural development.
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Affiliation(s)
- Ashtyn T Wiltbank
- Neuroscience Graduate Program, University of VirginiaCharlottesvilleUnited States
- Program in Fundamental Neuroscience, University of VirginiaCharlottesvilleUnited States
| | - Emma R Steinson
- Department of Biology, University of VirginiaCharlottesvilleUnited States
| | - Stacey J Criswell
- Department of Cell Biology, University of VirginiaCharlottesvilleUnited States
| | - Melanie Piller
- Department of Biology, University of VirginiaCharlottesvilleUnited States
| | - Sarah Kucenas
- Neuroscience Graduate Program, University of VirginiaCharlottesvilleUnited States
- Program in Fundamental Neuroscience, University of VirginiaCharlottesvilleUnited States
- Department of Biology, University of VirginiaCharlottesvilleUnited States
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8
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Lu X, Wang S, Feng S, Li H. CSE/H 2S system alleviates uremic accelerated atherosclerosis by regulating TGF-β/Smad3 pathway in 5/6 nephrectomy ApoE -/- mice. BMC Nephrol 2020; 21:527. [PMID: 33276745 PMCID: PMC7716493 DOI: 10.1186/s12882-020-02183-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 11/24/2020] [Indexed: 01/17/2023] Open
Abstract
Background Hydrogen sulfide (H2S) has been shown to inhibit the atherosclerosis development and progression. It is produced by cystathionine γ-lyase (CSE) in the cardiovascular system. In our previous study, it has been shown that CSE/H2S system plays a significant role in the changes of uremic accelerated atherosclerosis (UAAS), but the mechanism is not known clearly. Methods In this study, we explored the antagonism of CSE/H2S system in UAAS and identified its possible signaling molecules in ApoE−/− mice with 5/6 nephrectomy and fed with atherogenic diet. Mice were divided into sham operation group (sham group), UAAS group, sodium hydrosulfide group (UAAS+NaHS group) and propargylglycine group (UAAS+PPG group). Serum creatinine, urea nitrogen, lipid levels and lesion size of atherosclerotic plaque in the aortic roots were analyzed. Meanwhile, the expression of CSE, TGF-β and phosphorylation of Smad3 were detected. Results Compared with sham group, the aortic root of ApoE−/− mice in the UAAS group developed early atherosclerosis, the levels of total cholesterol, triglyceride, low-density lipoprotein-cholesterol, serum creatinine and urea nitrogen were also higher than that in the sham group. NaHS administration can inhibit the development of atherosclerosis, but PPG administration can accelerate the atherosclerosis development. Meanwhile, the protein expression levels of CSE and TGF-β and phosphorylation of Smad3 significantly decreased in the UAAS mice. Treatment of UAAS mice with NaHS inhibited TGF-β protein expression and Smad3 phosphorylation decrease, but PPG treatment had the opposite effect. Conclusions The CSE/H2S system is of great importance for treating atherosclerosis in patients with chronic kidney disease, and it may protect the vascular from atherosclerosis through the TGF-β/Smad pathway.
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Affiliation(s)
- Xiangxue Lu
- Department of Blood Purification, Beijing Chao-Yang Hospital, Capital Medical University, No. 8 Gongti South Road, Chaoyang District, Beijing, 100020, China
| | - Shixiang Wang
- Department of Blood Purification, Beijing Chao-Yang Hospital, Capital Medical University, No. 8 Gongti South Road, Chaoyang District, Beijing, 100020, China
| | - Sujuan Feng
- Department of Blood Purification, Beijing Chao-Yang Hospital, Capital Medical University, No. 8 Gongti South Road, Chaoyang District, Beijing, 100020, China
| | - Han Li
- Department of Blood Purification, Beijing Chao-Yang Hospital, Capital Medical University, No. 8 Gongti South Road, Chaoyang District, Beijing, 100020, China.
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Chen L, Huang Y, Guo J, Li Y. Expression of Bace1 is positive with the progress of atherosclerosis and formation of foam cell. Biochem Biophys Res Commun 2020; 528:440-446. [PMID: 32507599 DOI: 10.1016/j.bbrc.2020.05.190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 05/25/2020] [Indexed: 10/24/2022]
Abstract
Previous studies have shown that the occurrence of atherosclerosis is closely related to changes of α2, 6-sialic acid transferase I (ST6Gal-I). Bace1 has been identified as a protease responsible for the cleavage and secretion of Golgi-resident ST6Gal-I. There have been only a few attempts to clarify the direct connection between Bace1 and atherosclerosis. The purpose of this study was to investigate the relationship between Bace1 gene and atherosclerosis. Expressions of Bace1 protein and mRNA in ApoE-/- mice fed on high-fat diet were evaluated and the development of atherosclerosis was assessed in Bace1-/- mice fed on high-fat diet. In vitro, the expression of Bace1 gene was detected in foam cell model and the formation of foam cells was examined after knocking down Bace1 by siRNA. We observed a significant increase in Bace1 expression in the aortic root in the model of atherosclerosis in ApoE-/-mice. The expression of Bace1 protein and mRNA levels had a remarkable increase in high-fat group. After knocking out the Bace1 gene, serum lipid levels were significantly lower and intimal thickness was obvious thinner than those in wild-type mice with high-fat diet. Expression of Bace1 protein and mRNA levels were significantly elevated in foam cell. The formation of foam cells was blocked when Bace1 was knocked down by siRNA interferes. Our results suggested that elevated Bace1 gene had a positive role in the progression of atherosclerosis. Affecting the glycosyltransferase may be one of its mechanisms.
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Affiliation(s)
- Linmu Chen
- Department of Cardiology, First Affiliated Hospital, Jinan University, Guangzho, 510006, China; Department of Pharmacy, Zhongshan People's Hospital, Guangdong, Zhongshan, 528403, China
| | - Yunxiu Huang
- Department of Laboratory Medicine, Zhongshan People's Hospital, Guangdong, Zhongshan, 528403, China
| | - Jun Guo
- Department of Cardiology, First Affiliated Hospital, Jinan University, Guangzho, 510006, China
| | - Yunjing Li
- Department of Pharmacy, Zhongshan People's Hospital, Guangdong, Zhongshan, 528403, China.
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Abdel-Latif M, Saidan S, Morsy BM. Coenzyme Q10 attenuates rat hepatocarcinogenesis via the reduction of CD59 expression and phospholipase D activity. Cell Biochem Funct 2020; 38:490-499. [PMID: 31989689 DOI: 10.1002/cbf.3487] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 10/05/2019] [Accepted: 12/19/2019] [Indexed: 12/31/2022]
Abstract
The current study aimed to test the profile of serum lipids, phospholipase D (PLD) activity, and CD59 expression pattern in rat hepatocellular carcinoma (HCC) after therapeutic treatment with Coenzyme Q10 (CoQ10). Three rat groups were allocated as normal control, untreated HCC, and treated HCC (HCC + CoQ10). The levels of serum α-fetoprotein (AFP) and tumour necrosis factor (TNF)-α were assessed using enzyme-linked immunosorbent assay (ELISA), while proliferating cell nuclear antigen (PCNA) was detected using immunohistochemistry (IHC). Serum lipids, classical (CH50), and alternative (APH50) pathways of complement activation, the liver cell HMG-CoA reductase (HMGCR), and PLD activities were assayed colorimetrically. The protein expression of CD59, scavenger receptor class B type 1 (SRB1), B cell lymphoma-2 (Bcl2), and cleaved Caspase-3 (Casp-3) were detected using western blotting, while the level of serum CD59 (sCD59) was assessed using dot-blot. CoQ10 reduced the cell proliferation, histological alterations, and the levels of AFP and TNF-α but increased lipids, CH50, and sCD59 in serum. In the liver cell, CoQ10 decreased and increased PLD and HMGCR enzyme activities, respectively. In addition, reduction of liver CD59, Bcl2, and SRB1 vs increased cleaved Casp-3 expressions was observed. Statistical correlation indicated an inverse relationship between CH50 and each of CD59 expression and PLD activity after treatment with CoQ10. In conclusion, CoQ10 could protect against rat HCC through increased lipids and the reduction of CD59 expression and PLD activity. SIGNIFICANCE OF THE STUDY: To our knowledge, this study is the first to describe the attenuating effect of antitumour natural product like Coenzyme Q10 (CoQ10) via the reduction of CD59 expression and phospholipase D (PLD) activity. This illustrates the important role of CD59 and PLD in relation to lipids in cancer prevention.
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Affiliation(s)
- Mahmoud Abdel-Latif
- Immunity Division, Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Suzan Saidan
- Biochemistry Division, Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Basant M Morsy
- Biochemistry Division, Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
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11
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Cui X, Zhang X, Bu H, Liu N, Li H, Guan X, Yan H, Wang Y, Zhang H, Ding Y, Cheng M. Shear stress-mediated changes in the expression of complement regulatory protein CD59 on human endothelial progenitor cells by ECM-integrinα Vβ 3-F-actin pathway in vitro. Biochem Biophys Res Commun 2017; 494:416-421. [PMID: 28943429 DOI: 10.1016/j.bbrc.2017.09.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 09/06/2017] [Indexed: 01/27/2023]
Abstract
Membrane regulatory proteins, such as CD46, CD55, and CD59, prevent excess complement activation and to protect cells from damage. Previous investigations confirmed that shear stress in the physiological range was more favorable for endothelial progenitor cells (EPCs) to repair injured vascular endothelial cells and operates mainly in atheroprotective actions. However, detailed events that contribute to shear stress-induced protection in EPCs, particularly the mechanisms of signal transduction, remain poorly understood. In this study, we observed shear stress-mediated changes in the expression of complement regulatory proteins CD46, CD55, and CD59 on human EPCs and focused on the mechanical transmission mechanism in transformed cells in response to the ECM-F-actin pathway in vitro. Shear stress was observed to promote the expression of complement regulatory protein CD59, but not CD46 or CD55, on EPCs. In addition, the shear stress-induced CD59 expression was confirmed to be associated with the ECM components and was alleviated in EPCs pretreated with GRGDSP, which inhibits ECM components-integrin interaction. Furthermore, shear stress also promotes the rearrangement and polymerization of F-actin. However, shear stress-induced CD59 expression was reduced when the F-actin stress fiber formation process was delayed by Gly-Arg-Gly-Asp-Ser-Pro (GRGDSP) or destroyed by cytochalasin D (Cyto D), while Jasplakinolide (JAS) reversed the expression of CD59 through promotion of F-actin polymerization and its stabilizing capacities. Our results indicates that shear stress is an important mediator in EPC expression of CD59 regulated by the ECM-F-actin pathway, which is a key factor in preventing membrane attack complex (MAC) -mediated cell autolysis.
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Affiliation(s)
- Xiaodong Cui
- Clinical Medical School, Weifang Medical University, Weifang, Shandong, 261053, PR China
| | - Xiaoyun Zhang
- Clinical Medical School, Weifang Medical University, Weifang, Shandong, 261053, PR China
| | - Hongnan Bu
- Department of Gynaecology and Obstetrics, The 89 Hospital of Chinese PLA, Weifang, Shandong, 261021, China
| | - Na Liu
- Clinical Medical School, Weifang Medical University, Weifang, Shandong, 261053, PR China
| | - Hong Li
- Clinical Medical School, Weifang Medical University, Weifang, Shandong, 261053, PR China
| | - Xiumei Guan
- Clinical Medical School, Weifang Medical University, Weifang, Shandong, 261053, PR China
| | - Hong Yan
- Clinical Medical School, Weifang Medical University, Weifang, Shandong, 261053, PR China
| | - Yuzhen Wang
- Medical Research Center, Weifang Medical University, Weifang, Shandong, 261053, PR China
| | - Hua Zhang
- Department of Gynaecology and Obstetrics, The 89 Hospital of Chinese PLA, Weifang, Shandong, 261021, China
| | - Yuzhen Ding
- Clinical Medical School, Weifang Medical University, Weifang, Shandong, 261053, PR China
| | - Min Cheng
- Clinical Medical School, Weifang Medical University, Weifang, Shandong, 261053, PR China.
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Li M, Liu B, Gu C, Zhang W, Yang J, Cheng G, Liu C, Hu X. Necroptosis of Splenic Macrophages Induced by Streptococcus gallolyticus subsp. pasteurianus. Avian Dis 2017; 61:115-122. [PMID: 28301240 DOI: 10.1637/11449-061216-reg] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A previous study demonstrated that a highly virulent strain of Streptococcus gallolyticus subsp. pasteurianus, designated as the AL101002 strain, induced high mortality in ducklings with splenic lesions. In this study, 42 ducklings were subcutaneously inoculated with the AL101002 strain to study changes in splenic lesions over time. The spleens from these ducklings were significantly enlarged by congestion and edema, and/or showed multiple marbled areas 14 days postinoculation (dpi). The AL101002 strain was reisolated from the spleens and blood and confirmed by immunohistochemistry (IHC) with the use of anti-AL101002 antibody. Histopathologically, the main lesion was macrophage necrosis in the spleens from 1 to 7 dpi. Terminal dUTP nick-end labeling assay, transmission electron microscopy, and IHC by anti-macrosialin antibody (CD68) demonstrated that macrophage necrosis was necroptosis, which was further confirmed by quantitative (real-time) reverse-transcriptase PCR analysis. Two major factors of apoptosis, caspase 3 and caspase 8, did not significantly change during the AL101002 infection, suggesting that apoptosis signals were not activated. However, the key factor mixed lineage kinase like was increased significantly (P < 0.05) from Day 1 to Day 14 dpi. Inflammatory cytokine interleukin-1β and interleukin-6 had significantly (P < 0.01) upregulated expression in the spleens on Day 1 dpi. Tumor necrosis factor α was downregulated from Day 1 to Day 5 dpi, but increased from Day 7 to Day 14. Our results demonstrated that AL101002 strain mainly infects macrophages and resulted in macrophage necroptosis and suggested that macrophage necroptosis in spleens is involved in the pathogenesis of S. gallolyticus subsp. pasteurianus infection in ducklings.
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Affiliation(s)
- Meixia Li
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Bo Liu
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Changqin Gu
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Wanpo Zhang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Jun Yang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Guofu Cheng
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Cuiping Liu
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Xueying Hu
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
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Xia F, Wang C, Jin Y, Liu Q, Meng Q, Liu K, Sun H. Luteolin protects HUVECs from TNF-α-induced oxidative stress and inflammation via its effects on the Nox4/ROS-NF-κB and MAPK pathways. J Atheroscler Thromb 2014; 21:768-83. [PMID: 24621786 DOI: 10.5551/jat.23697] [Citation(s) in RCA: 100] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
AIM Inflammation and oxidative stress are now recognized to be two important contributing factors to the development of atherosclerosis(AS). NADPH oxidase-4 (Nox4)-derived reactive oxygen species(ROS), NF-κB and MAPK play crucial roles in these processes. Luteolin, a flavone rich in many plants, can interrupt the molecular expression and inhibit the progression of inflammation and oxidative stress. The present study was designed to test whether luteolin inhibits TNF-α-induced inflammation and oxidative stress in human umbilical vein endothelial cells(HUVECs) and identify some of the mechanisms underlying these effects. METHODS HUVECs were treated with luteolin in the presence/absence of TNF-α. The mechanism of luteolin against TNF-α-induced cell injury was evaluated using Western blotting, real-time RT-PCR and flow cytometry analyses. RESULTS Luteolin suppressed the TNF-α-activated ROS generation, as well as the Nox4, p22phox, and ICAM-1 and VCAM-1 expression. Luteolin also enhanced the Bcl-2 and reduced caspase-3, -9 expression in the TNF-α-treated HUVECs. Finally, luteolin inhibited the TNF-α-induced transcriptional activity of NF-κB and p38 in addition to ERK1/2 phosphorylation. The inhibitors and siRNA of Nox4 and NF-κB not only reduced ROS generation, p38, ERK1/2 phosphorylation and the ICAM-1 and VCAM-1 expression, but also enhanced Bcl-2 expression. The inhibitor of p38 had the same effect on the expression of ICAM-1, VCAM-1 and Bcl-2, while the inhibitor of ERK1/2 increased the Bcl-2 expression rather than reducing the ICAM-1 and VCAM-1 expression. CONCLUSIONS Luteolin attenuates TNF-α-induced oxidative stress and inflammation via its effects on the Nox4/ROS-NF-κB and MAPK pathways. These results suggest that luteolin may provide a beneficial effect in treating vascular diseases associated with oxidative stress and inflammation.
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Affiliation(s)
- Fan Xia
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University
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