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Elnegris HM, Abdelrahman AA, El-Roghy ES. The potential therapeutic effects of exosomes derived from bone marrow mesenchymal stem cells on ileum injury of a rat sepsis model (histological and immunohistochemical study). Ultrastruct Pathol 2024; 48:274-296. [PMID: 38946300 DOI: 10.1080/01913123.2024.2368011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 06/11/2024] [Indexed: 07/02/2024]
Abstract
Sepsis denotes a serious high mortality concern. The study was designed to evaluate the effect of mesenchymal stem cell exosomes (MSC-exosomes) on the evolution of the animal model of sepsis. In this study, 36 rats were distributed into three groups, (I) controls, (II) LPS-treated, and (III) LPS+MSC-EVs. Sepsis was simulated by administering E. coli-LPS to the laboratory animals. Group III was given MSC-exosomes four hours after the LPS injection. Forty-eight hours later rats were sacrificed. Ileum samples were excised, and processed for the histological assessment, immunohistochemical identification of CD44, and inducible nitric oxide synthase (iNOS). Ileum homogenate was used to estimate tumor necrosis factor α (TNF α) besides Cyclooxygenase-2 (COX 2). PCR was used for the detection of interleukin 1α (IL‑1α), and interleukin 17 (IL‑17). Statistical and morphometrical analysis was done. The LPS-treated group showed increased TNF-α, IL‑1α, IL‑17, and decreased COX 2. LPS administration led to cytoplasmic vacuolization of enterocytes, an increase in the vasculature, and cellular infiltrations invaded the lamina propria. There was a significant rise in goblet cells and the proportion of collagen fibers. Ultrastructurally, the enterocytes displayed nuclear irregularity, rough endoplasmic reticulum (rER) dilatation, and increased mitochondria number. Sepsis induces a significant increase in iNOS and a decrease in CD44 immune expressions. LPS+MSC-EVs group restored normal ileum structure and revealed a significant elevation in CD44 and a reduction in iNOS immunoreactions. LPS-sepsis induced an obvious ileum inflammatory deterioration ameliorated by MSC-exosomes, mostly through their antioxidant, anti-inflammatory, and anti-apoptotic properties.
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Affiliation(s)
- Heba M Elnegris
- Department of Histology and Cell Biology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
- Department of Histology and Cell Biology, Faculty of Medicine, Badr University in Cairo, Cairo, Egypt
| | - Abeer A Abdelrahman
- Biochemistry and Molecular Biology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Eman S El-Roghy
- Department of Histology and Cell Biology, Faculty of Medicine, Menoufia University, Shebin el Kom, Egypt
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2
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Ruysseveldt E, Steelant B, Wils T, Cremer J, Bullens DMA, Hellings PW, Martens K. The nasal basal cell population shifts toward a diseased phenotype with impaired barrier formation capacity in allergic rhinitis. J Allergy Clin Immunol 2024:S0091-6749(24)00454-8. [PMID: 38705259 DOI: 10.1016/j.jaci.2024.04.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 03/27/2024] [Accepted: 04/10/2024] [Indexed: 05/07/2024]
Abstract
BACKGROUND The integrity of the airway epithelium is guarded by the airway basal cells that serve as progenitor cells and restore wounds in case of injury. Basal cells are a heterogenous population, and specific changes in their behavior are associated with chronic barrier disruption-mechanisms that have not been studied in detail in allergic rhinitis (AR). OBJECTIVE We aimed to study basal cell subtypes in AR and healthy controls. METHODS Single-cell RNA sequencing (scRNA-Seq) of the nasal epithelium was performed on nonallergic and house dust mite-allergic AR patients to reveal basal cell diversity and to identify allergy-related alterations. Flow cytometry, immunofluorescence staining, and in vitro experiments using primary basal cells were performed to confirm phenotypic findings at the protein level and functionally. RESULTS The scRNA-Seq, flow cytometry, and immunofluorescence staining revealed that basal cells are abundantly and heterogeneously present in the nasal epithelium, suggesting specialized subtypes. The total basal cell fraction within the epithelium in AR is increased compared to controls. scRNA-Seq demonstrated that potentially beneficial basal cells are missing in AR epithelium, while an activated population of allergy-associated basal cells is more dominantly present. Furthermore, our in vitro proliferation, wound healing assay and air-liquid interface cultures show that AR-associated basal cells have altered progenitor capacity compared to nonallergic basal cells. CONCLUSIONS The nasal basal cell population is abundant and diverse, and it shifts toward a diseased state in AR. The absence of potentially protective subtypes and the rise of a proinflammatory population suggest that basal cells are important players in maintaining epithelial barrier defects in AR.
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Affiliation(s)
- Emma Ruysseveldt
- Department of Microbiology, Immunology, and Transplantation, Allergy and Clinical Immunology Research Group, KU Leuven, Leuven, Belgium.
| | - Brecht Steelant
- Department of Microbiology, Immunology, and Transplantation, Allergy and Clinical Immunology Research Group, KU Leuven, Leuven, Belgium
| | - Tine Wils
- Department of Microbiology, Immunology, and Transplantation, Allergy and Clinical Immunology Research Group, KU Leuven, Leuven, Belgium
| | - Jonathan Cremer
- Department of Microbiology, Immunology, and Transplantation, Allergy and Clinical Immunology Research Group, KU Leuven, Leuven, Belgium
| | - Dominique M A Bullens
- Department of Microbiology, Immunology, and Transplantation, Allergy and Clinical Immunology Research Group, KU Leuven, Leuven, Belgium; Clinical Department of Paediatrics, University Hospitals Leuven, Leuven, Belgium
| | - Peter W Hellings
- Department of Microbiology, Immunology, and Transplantation, Allergy and Clinical Immunology Research Group, KU Leuven, Leuven, Belgium; Clinical Department of Otorhinolaryngology, Head and Neck Surgery, University Hospitals Leuven, Leuven, Belgium; Upper Airways Research Laboratory, University of Ghent, Ghent, Belgium
| | - Katleen Martens
- Department of Microbiology, Immunology, and Transplantation, Allergy and Clinical Immunology Research Group, KU Leuven, Leuven, Belgium; Department of Bioscience Engineering, Research Group Environmental Ecology and Applied Microbiology, University of Antwerp, Antwerp, Belgium
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An L, Kim D, Donahue LR, Mejooli MA, Eom CY, Nishimura N, White AC. Sexual dimorphism in melanocyte stem cell behavior reveals combinational therapeutic strategies for cutaneous repigmentation. Nat Commun 2024; 15:796. [PMID: 38280858 PMCID: PMC10821900 DOI: 10.1038/s41467-024-45034-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 01/12/2024] [Indexed: 01/29/2024] Open
Abstract
Vitiligo is an autoimmune skin disease caused by cutaneous melanocyte loss. Although phototherapy and T cell suppression therapy have been widely used to induce epidermal re-pigmentation, full pigmentation recovery is rarely achieved due to our poor understanding of the cellular and molecular mechanisms governing this process. Here, we identify unique melanocyte stem cell (McSC) epidermal migration rates between male and female mice, which is due to sexually dimorphic cutaneous inflammatory responses generated by ultra-violet B exposure. Using genetically engineered mouse models, and unbiased bulk and single-cell mRNA sequencing approaches, we determine that manipulating the inflammatory response through cyclooxygenase and its downstream prostaglandin product regulates McSC proliferation and epidermal migration in response to UVB exposure. Furthermore, we demonstrate that a combinational therapy that manipulates both macrophages and T cells (or innate and adaptive immunity) significantly promotes epidermal melanocyte re-population. With these findings, we propose a novel therapeutic strategy for repigmentation in patients with depigmentation conditions such as vitiligo.
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Affiliation(s)
- Luye An
- Department of Biomedical Sciences, Cornell University, Ithaca, NY, 14850, USA
| | - Dahihm Kim
- Department of Biomedical Sciences, Cornell University, Ithaca, NY, 14850, USA
| | - Leanne R Donahue
- Department of Biomedical Sciences, Cornell University, Ithaca, NY, 14850, USA
| | | | - Chi-Yong Eom
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, 14850, USA
| | - Nozomi Nishimura
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, 14850, USA
| | - Andrew C White
- Department of Biomedical Sciences, Cornell University, Ithaca, NY, 14850, USA.
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4
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Truong VL, Bae YJ, Rarison RHG, Bang JH, Park SY, Jeong WS. Anti-Inflammatory and Antioxidant Activities of Lipophilic Fraction from Liriope platyphylla Seeds Using Network Pharmacology, Molecular Docking, and In Vitro Experiments. Int J Mol Sci 2023; 24:14958. [PMID: 37834406 PMCID: PMC10573744 DOI: 10.3390/ijms241914958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 09/20/2023] [Accepted: 10/02/2023] [Indexed: 10/15/2023] Open
Abstract
Antioxidant and anti-inflammatory mechanisms counteract the pathogenesis of chronic diseases, such as diabetes, aging, and cancer. Therefore, enhancing antioxidant and anti-inflammatory functions may help manage these pathological conditions. This study aimed to assess the antioxidant and anti-inflammatory potentials of lipophilic fraction of Liriope platyphylla seeds (LLPS) using network pharmacology, molecular docking, and in vitro experiments. Here GC-MS analysis tentatively identified forty-three lipophilic compounds in LLPS. LLPS exhibited powerful antioxidant activity, according to the results from chemical-based antioxidant assays on DPPH, ABTS+, superoxide anion, hydrogen peroxide, nitric oxide, and hydroxyl radicals scavenging, lipid peroxidation, reducing antioxidant powers, and total antioxidant capacity. Additionally, LLPS enhanced cellular antioxidant capacity by inhibiting reactive oxygen species formation and elevating antioxidant enzyme levels, including catalase and heme oxygenase-1. Moreover, LLPS attenuated inflammatory response by reducing nitric oxide secretion and downregulating the expression of inducible nitric oxide synthase, cyclooxygenase-2, and interleukin-1β in lipopolysaccharide-treated macrophages. Network pharmacology and molecular docking analyses showed that key compounds in LPPS, particularly phytosterols and fatty acid esters, exerted antioxidant and anti-inflammatory properties through regulating NFKB1, PTGS1, PTGS2, TLR4, PRKCA, PRKCD, KEAP1, NFE2L2, and NR1l2. Overall, these data suggest that LLPS may be a potential antioxidant and anti-inflammatory agent for developing functional foods.
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Affiliation(s)
- Van-Long Truong
- School of Food Science & Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Republic of Korea; (V.-L.T.); (Y.-J.B.); (R.H.G.R.); (J.-H.B.); (S.-Y.P.)
- Food and Bio-Industry Research Institute, School of Food Science & Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Yeon-Ji Bae
- School of Food Science & Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Republic of Korea; (V.-L.T.); (Y.-J.B.); (R.H.G.R.); (J.-H.B.); (S.-Y.P.)
| | - Razanamanana H. G. Rarison
- School of Food Science & Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Republic of Korea; (V.-L.T.); (Y.-J.B.); (R.H.G.R.); (J.-H.B.); (S.-Y.P.)
| | - Ji-Hong Bang
- School of Food Science & Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Republic of Korea; (V.-L.T.); (Y.-J.B.); (R.H.G.R.); (J.-H.B.); (S.-Y.P.)
| | - So-Yoon Park
- School of Food Science & Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Republic of Korea; (V.-L.T.); (Y.-J.B.); (R.H.G.R.); (J.-H.B.); (S.-Y.P.)
| | - Woo-Sik Jeong
- School of Food Science & Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Republic of Korea; (V.-L.T.); (Y.-J.B.); (R.H.G.R.); (J.-H.B.); (S.-Y.P.)
- Food and Bio-Industry Research Institute, School of Food Science & Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Republic of Korea
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Moss CE, Phipps H, Wilson HL, Kiss-Toth E. Markers of the ageing macrophage: a systematic review and meta-analysis. Front Immunol 2023; 14:1222308. [PMID: 37520567 PMCID: PMC10373068 DOI: 10.3389/fimmu.2023.1222308] [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: 05/14/2023] [Accepted: 06/27/2023] [Indexed: 08/01/2023] Open
Abstract
Introduction Ageing research is establishing macrophages as key immune system regulators that undergo functional decline. Due to heterogeneity between species and tissue populations, a plethora of data exist and the power of scientific conclusions can vary substantially. This meta-analysis by information content (MAIC) and systematic literature review (SLR) aims to determine overall changes in macrophage gene and protein expression, as well as function, with age. Methods PubMed was utilized to collate peer-reviewed literature relating to macrophage ageing. Primary studies comparing macrophages in at least two age groups were included. Data pertaining to gene or protein expression alongside method used were extracted for MAIC analysis. For SLR analysis, data included all macrophage-specific changes with age, as well as species, ontogeny and age of groups assessed. Results A total of 240 studies were included; 122 of which qualified for MAIC. The majority of papers focussed on changes in macrophage count/infiltration as a function of age, followed by gene and protein expression. The MAIC found iNOS and TNF to be the most commonly investigated entities, with 328 genes and 175 proteins showing consistent dysregulation with age across the literature. Overall findings indicate that cytokine secretion and phagocytosis are reduced and reactive oxygen species production is increased in the ageing macrophage. Discussion Collectively, our analysis identifies critical regulators in macrophage ageing that are consistently dysregulated, highlighting a plethora of targets for further investigation. Consistent functional changes with age found here can be used to confirm an ageing macrophage phenotype in specific studies and experimental models.
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Affiliation(s)
- Charlotte E. Moss
- Department of Infection, Immunity and Cardiovascular Disease, Medical School, University of Sheffield, Sheffield, United Kingdom
- Healthy Lifespan Institute, University of Sheffield, Sheffield, United Kingdom
| | - Hew Phipps
- Department of Infection, Immunity and Cardiovascular Disease, Medical School, University of Sheffield, Sheffield, United Kingdom
| | - Heather L. Wilson
- Department of Infection, Immunity and Cardiovascular Disease, Medical School, University of Sheffield, Sheffield, United Kingdom
- Healthy Lifespan Institute, University of Sheffield, Sheffield, United Kingdom
| | - Endre Kiss-Toth
- Department of Infection, Immunity and Cardiovascular Disease, Medical School, University of Sheffield, Sheffield, United Kingdom
- Healthy Lifespan Institute, University of Sheffield, Sheffield, United Kingdom
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An L, Kim D, Donahue L, Mejooli MA, Chi-Yong E, Nishimura N, White AC. Sexual dimorphism in melanocyte stem cell behavior reveals combinational therapeutic strategies for cutaneous repigmentation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.22.541644. [PMID: 37293072 PMCID: PMC10245926 DOI: 10.1101/2023.05.22.541644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Vitiligo is an autoimmune skin disease caused by cutaneous melanocyte loss. Although phototherapy and T cell suppression therapy have been widely used to induce epidermal repigmentation, full pigmentation recovery is rarely achieved due to our poor understanding of the cellular and molecular mechanisms governing this process. Here, we identify unique melanocyte stem cell (McSC) epidermal migration rates between male and female mice, which is due to sexually dimorphic cutaneous inflammatory responses generated by ultra-violet B exposure. Using genetically engineered mouse models, and unbiased bulk and single-cell mRNA sequencing approaches, we determine that manipulating the inflammatory response through cyclooxygenase and its downstream prostaglandin product regulates McSC proliferation and epidermal migration in response to UVB exposure. Furthermore, we demonstrate that a combinational therapy that manipulates both macrophages and T cells (or innate and adaptive immunity) significantly promotes epidermal melanocyte re-population. With these findings, we propose a novel therapeutic strategy for repigmentation in patients with depigmentation conditions such as vitiligo.
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Affiliation(s)
- Luye An
- Department of Biomedical Sciences, Cornell University, Ithaca, NY, USA, 14850
| | - Dahihm Kim
- Department of Biomedical Sciences, Cornell University, Ithaca, NY, USA, 14850
| | - Leanne Donahue
- Department of Biomedical Sciences, Cornell University, Ithaca, NY, USA, 14850
| | | | - Eom Chi-Yong
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA, 14850
| | - Nozomi Nishimura
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA, 14850
| | - Andrew C White
- Department of Biomedical Sciences, Cornell University, Ithaca, NY, USA, 14850
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7
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Oliveira BTM, Dourado TMH, Santos PWS, Bitencourt TA, Tirapelli CR, Colombo AL, Almeida F. Extracellular Vesicles from Candida haemulonii var. vulnera Modulate Macrophage Oxidative Burst. J Fungi (Basel) 2023; 9:jof9050562. [PMID: 37233272 DOI: 10.3390/jof9050562] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 05/06/2023] [Accepted: 05/08/2023] [Indexed: 05/27/2023] Open
Abstract
Members of the Candida haemulonii species complex are multidrug-resistant emergent yeast pathogens able to cause superficial and invasive infections in risk populations. Fungal extracellular vesicles (EVs) play a critical role in the pathogenicity and virulence of several species and may perform essential functions during infections, such as carrying virulence factors that behave in two-way communications with the host, affecting survival and fungal resistance. Our study aimed to describe EV production from Candida haemulonii var. vulnera and evaluate whether murine macrophage RAW 264.7 cells respond to their stimuli by generating an oxidative response after 24 h. For this purpose, reactive oxygen species detection assays demonstrated that high concentrations of yeast and EVs (1010 particles/mL) of Candida haemulonii did not change macrophage viability. However, the macrophages recognized these EVs and triggered an oxidative response through the classical NOX-2 pathway, increasing O2•- and H2O2 levels. However, this stress did not cause lipid peroxidation in the RAW 264.7 cells and neither lead to the activation of the COX-2-PGE2 pathway. Thus, our data suggest that low concentrations of C. haemulonii EVs are not recognized by the classical pathway of the oxidative burst generated by macrophages, which might be an advantage allowing the transport of virulence factors via EVs, not identified by the host immune system that could work as fine tube regulators during infections caused by C. haemulonii. In contrast, C. haemulonii var. vulnera and high EV concentrations activated microbicidal actions in macrophages. Therefore, we propose that EVs could participate in the virulence of the species and that these particles could be a source of antigens to be exploited as new therapeutic targets.
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Affiliation(s)
- Bianca T M Oliveira
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil
| | - Thales M H Dourado
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil
| | - Patrick W S Santos
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil
| | - Tamires A Bitencourt
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil
| | - Carlos R Tirapelli
- Laboratory of Pharmacology, Department of Psychiatric Nursing and Human Sciences, College of Nursing of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-902, SP, Brazil
| | - Arnaldo L Colombo
- Special Laboratory of Mycology, Universidade Federal de São Paulo, São Paulo 04023-062, SP, Brazil
| | - Fausto Almeida
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto 14049-900, SP, Brazil
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Wang X, Chen J, Zheng J. The roles of COX-2 in protozoan infection. Front Immunol 2023; 14:955616. [PMID: 36875123 PMCID: PMC9978824 DOI: 10.3389/fimmu.2023.955616] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 02/06/2023] [Indexed: 02/18/2023] Open
Abstract
Protozoan diseases cause great harm in animal husbandry and require human-provided medical treatment. Protozoan infection can induce changes in cyclooxygenase-2 (COX-2) expression. The role played by COX-2 in the response to protozoan infection is complex. COX-2 induces and regulates inflammation by promoting the synthesis of different prostaglandins (PGs), which exhibit a variety of biological activities and participate in pathophysiological processes in the body in a variety of ways. This review explains the roles played by COX-2 in protozoan infection and analyzes the effects of COX-2-related drugs in protozoan diseases.
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Affiliation(s)
- Xinlei Wang
- Department of Clinical Laboratory, The Second Hospital of Jilin University, Jilin University, Changchun, China
| | - Jie Chen
- Institute of Theoretical Chemistry, Jilin University, Changchun, China
| | - Jingtong Zheng
- Department of Pathogenobiology, College of Basic Medical Sciences, Jilin University, Changchun, China
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Antioxidant and Anti-Inflammatory Activity of Filipendula glaberrima Nakai Ethanolic Extract and Its Chemical Composition. Molecules 2022; 27:molecules27144628. [PMID: 35889506 PMCID: PMC9321904 DOI: 10.3390/molecules27144628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/11/2022] [Accepted: 07/13/2022] [Indexed: 02/01/2023] Open
Abstract
Many countries are endeavoring to strengthen the competitiveness of their biological resources by exploring and developing wild endemic plants. This study examined the effects of Filipendula glaberrima Nakai (FG) on the antioxidant and anti-inflammatory activity using an in vitro system. The bioactive components were also examined using chromatographic techniques. The ethanol extract of Filipendula glaberrima Nakai (FGE) exerted antioxidant activities in the radical scavenging and reducing power assays and had high amounts of total polyphenolic compounds. The qRT-PCR results suggested that FGE significantly downregulated the levels cyclooxygenase (COX)-2, inducible nitric oxide synthase (iNOS) 2, tumor necrosis factor (TNF)-α, and interleukin (IL)-6 in LPS-stimulated RAW 264.7 cells. The FGE treatment also decreased the production of nitric oxide, TNF-α, and IL-6 significantly in a dose-dependent manner. In addition, FGE downregulated phosphorylation of MAPK and NF-κB signaling pathway-related proteins. The chromatographic and mass spectrometry results showed that FGE contained bioactive flavonoids such as (+)-catechin, miquelianin, quercitrin, and afzelin, which may be active compounds with antioxidant and anti-inflammatory activities. This study provides fundamental data on the anti-inflammatory activity of the FG and can serve as a good starting point for developing a novel natural anti-inflammatory agent using FGE-containing bioactive flavonoids.
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Carvalho NS, Lemes JBP, Pagliusi M, Machado ACDS, Malange KF, Pral LP, Fachi JL, Nishijima CM, Dos Santos GG, Tambeli CH, Sartori CR, Vinolo MAR, Parada CA. Neutrophil-Derived COX-2 has a Key Role during Inflammatory Hyperalgesia. Inflammation 2022; 45:2280-2293. [PMID: 35840810 DOI: 10.1007/s10753-022-01690-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 05/20/2022] [Indexed: 11/28/2022]
Abstract
Inflammation is a vital process for the injured tissue restoration and one of its hallmarks is inflammatory hyperalgesia. The cyclooxygenase (COX) pathway is strongly related to the inflammatory and painful process. Usually, the COX-1 isoform is described as homeostatic, while COX-2 is characterized as inducible in inflammatory conditions. Although it is well known that neutrophil cells are the first to arrive at the inflamed site and the major source of COX-2 is still unknown, the specific role of neutrophil-derived COX-2 in the pain process is. Thus, in the present study, we demonstrate for the first time that neutrophil-derived COX-2 plays a key role in peripheral inflammatory hyperalgesia. Conditional knockout mice for COX-2 in neutrophils (COX-2 fl/fl: Mrp8cre±) exhibited higher pain sensitivity after carrageenan (CG) injection and long-lasting IL-1β-induced hyperalgesia compared with the control group (COX-2 fl/fl). Also, CG-induced inflammation in COX-2 fl/fl: Mrp8cre± mice showed COX-1 overexpression, and increased neutrophil migration and pro-inflammatory cytokines (e.g., IL-1β and CXCL1). These findings revealed that neutrophil COX-2 has an important role in the regulation of inflammatory hyperalgesia.
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Affiliation(s)
- Nathalia Santos Carvalho
- Laboratory of the Study of Pain, Department of Structural and Functional Biology, University of Campinas, Rua Monteiro Lobato, 255, Campinas, SP, CEP, 13083-862, Brazil
| | - Julia Borges Paes Lemes
- Laboratory of the Study of Pain, Department of Structural and Functional Biology, University of Campinas, Rua Monteiro Lobato, 255, Campinas, SP, CEP, 13083-862, Brazil.,Department of Anesthesiology, University of California, San Diego, LA Jolla, CA, USA
| | - Marco Pagliusi
- Laboratory of the Study of Pain, Department of Structural and Functional Biology, University of Campinas, Rua Monteiro Lobato, 255, Campinas, SP, CEP, 13083-862, Brazil.,Department of Pharmacology, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Ana Carolina Dos Santos Machado
- Laboratory of the Study of Pain, Department of Structural and Functional Biology, University of Campinas, Rua Monteiro Lobato, 255, Campinas, SP, CEP, 13083-862, Brazil
| | - Kauê Franco Malange
- Laboratory of the Study of Pain, Department of Structural and Functional Biology, University of Campinas, Rua Monteiro Lobato, 255, Campinas, SP, CEP, 13083-862, Brazil.,Department of Anesthesiology, University of California, San Diego, LA Jolla, CA, USA
| | - Laís Passariello Pral
- Laboratory of Immunoinflammation, Department of Genetics, Evolution, Microbiology, and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - José Luís Fachi
- Laboratory of Immunoinflammation, Department of Genetics, Evolution, Microbiology, and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Catarine Massucato Nishijima
- Laboratory of the Study of Pain, Department of Structural and Functional Biology, University of Campinas, Rua Monteiro Lobato, 255, Campinas, SP, CEP, 13083-862, Brazil
| | | | - Claudia Herrera Tambeli
- Laboratory of the Study of Pain, Department of Structural and Functional Biology, University of Campinas, Rua Monteiro Lobato, 255, Campinas, SP, CEP, 13083-862, Brazil
| | - Cesar Renato Sartori
- Laboratory of the Study of Pain, Department of Structural and Functional Biology, University of Campinas, Rua Monteiro Lobato, 255, Campinas, SP, CEP, 13083-862, Brazil
| | - Marco Aurélio Ramirez Vinolo
- Laboratory of Immunoinflammation, Department of Genetics, Evolution, Microbiology, and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Carlos Amilcar Parada
- Laboratory of the Study of Pain, Department of Structural and Functional Biology, University of Campinas, Rua Monteiro Lobato, 255, Campinas, SP, CEP, 13083-862, Brazil.
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11
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Yang Z, Mo Y, Cheng F, Zhang H, Shang R, Wang X, Liang J, Liu Y, Hao B. Antioxidant Effects and Potential Molecular Mechanism of Action of Limonium aureum Extract Based on Systematic Network Pharmacology. Front Vet Sci 2022; 8:775490. [PMID: 35071383 PMCID: PMC8767100 DOI: 10.3389/fvets.2021.775490] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 11/25/2021] [Indexed: 12/13/2022] Open
Abstract
Oxidative stress is the redox imbalance state of organisms that involves in a variety of biological processes of diseases. Limonium aureum (L.) Hill. is an excellent wild plant resource in northern China, which has potential application value for treating oxidative stress. However, there are few studies that focused on the antioxidant effect and related mechanism of L. aureum. Thus, the present study combining systematic network pharmacology and molecular biology aimed to investigate the antioxidant effects of L. aureum and explore its underlying anti-oxidation mechanisms. First, the antioxidant activity of L. aureum extracts was confirmed by in vitro and intracellular antioxidant assays. Then, a total of 11 bioactive compounds, 102 predicted targets, and 70 antioxidant-related targets were obtained from open source databases. For elucidating the molecular mechanisms of L. aureum, the PPI network and integrated visualization network based on bioinformatics assays were constructed to preliminarily understand the active compounds and related targets. The subsequent enrichment analysis results showed that L. aureum mainly affect the biological processes involving oxidation-reduction process, response to drug, etc., and the interference with these biological processes might be due to the simultaneous influence on multiple signaling pathways, including the HIF-1 and ERBB signaling pathways. Moreover, the mRNA levels of predicted hub genes were measured by qRT-PCR to verify the regulatory effect of L. aureum on them. Collectively, this finding lays a foundation for further elucidating the anti-oxidative damage mechanism of L. aureum and promotes the development of therapeutic drugs for oxidative stress.
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Affiliation(s)
- Zhen Yang
- Key Laboratory of New Animal Drug Project, Lanzhou, China
- Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs, Lanzhou, China
- Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agriculture Sciences, Lanzhou, China
| | - Yanan Mo
- Key Laboratory of New Animal Drug Project, Lanzhou, China
- Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs, Lanzhou, China
- Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agriculture Sciences, Lanzhou, China
| | - Feng Cheng
- Key Laboratory of New Animal Drug Project, Lanzhou, China
- Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs, Lanzhou, China
- Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agriculture Sciences, Lanzhou, China
| | - Hongjuan Zhang
- Key Laboratory of New Animal Drug Project, Lanzhou, China
- Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs, Lanzhou, China
- Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agriculture Sciences, Lanzhou, China
| | - Ruofeng Shang
- Key Laboratory of New Animal Drug Project, Lanzhou, China
- Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs, Lanzhou, China
- Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agriculture Sciences, Lanzhou, China
| | - Xuehong Wang
- Key Laboratory of New Animal Drug Project, Lanzhou, China
- Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs, Lanzhou, China
- Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agriculture Sciences, Lanzhou, China
| | - Jianping Liang
- Key Laboratory of New Animal Drug Project, Lanzhou, China
- Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs, Lanzhou, China
- Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agriculture Sciences, Lanzhou, China
| | - Yu Liu
- Key Laboratory of New Animal Drug Project, Lanzhou, China
- Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs, Lanzhou, China
- Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agriculture Sciences, Lanzhou, China
| | - Baocheng Hao
- Key Laboratory of New Animal Drug Project, Lanzhou, China
- Key Laboratory of Veterinary Pharmaceutical Development, Ministry of Agriculture and Rural Affairs, Lanzhou, China
- Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agriculture Sciences, Lanzhou, China
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Ho CL, Lin CS, Li LH, Hua KF, Ju TC. Inhibition of pro-inflammatory mediator expression in macrophages using wood vinegar from griffith's ash. CHINESE J PHYSIOL 2021; 64:232-243. [PMID: 34708715 DOI: 10.4103/cjp.cjp_54_21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Macrophages are essential for host defense as they control foreign pathogens and induce acquired immune responses. Activated macrophages secrete pro-inflammatory reactive substances causing local cell and tissue inflammatory response, which helps an organism resist the invasion of foreign pathogens. Excessive or chronic inflammation can cause several diseases. Previous studies have reported that vinegar treatment decreases the levels of several inflammatory cytokines and biomarkers, including mitogen-activated protein kinases, cyclooxygenase-2, inducible nitric oxide synthase (iNOS), and nitric oxide (NO). However, the benefits of wood vinegar produced from Griffith's ash (Fraxinus formosana Hayata) in reducing inflammation have not been investigated yet. Thus, assuming that wood vinegar exerts anti-inflammatory effects in macrophages, in this study, we investigated the potential anti-inflammatory effects of the wood vinegar from Griffith's ash using a lipopolysaccharide (LPS)-induced inflammatory response model in RAW264.7 macrophages. We showed that the wood vinegar inhibited the production of iNOS, NO, and interleukin 6. In addition, we found that the wood vinegar reduced the phosphorylation levels of p38 and protein kinase C-α/δ in the LPS-stimulated RAW264.7 macrophages. Based on these results, we suggest that the produced wood vinegar can reduce inflammation in LPS-activated macrophages.
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Affiliation(s)
- Chen-Lung Ho
- Division of Wood Cellulose, Taiwan Forestry Research Institute, Taipei, Taiwan
| | - Chuan-Shun Lin
- Animal Technology Research Center, Agricultural Technology Research Institute, Hsinchu, Taiwan
| | - Lan-Hui Li
- Department of Laboratory Medicine, Linsen, Chinese Medicine and Kunming Branch, Taipei City Hospital; Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Kuo-Feng Hua
- Department of Biotechnology and Animal Science, National Ilan University, Yilan; Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Tz-Chuen Ju
- Department of Animal Science and Biotechnology, Tunghai University, Taichung, Taiwan
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Lobeglitazone Exerts Anti-Inflammatory Effect in Lipopolysaccharide-Induced Bone-Marrow Derived Macrophages. Biomedicines 2021; 9:biomedicines9101432. [PMID: 34680549 PMCID: PMC8533245 DOI: 10.3390/biomedicines9101432] [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: 08/30/2021] [Revised: 10/05/2021] [Accepted: 10/07/2021] [Indexed: 02/02/2023] Open
Abstract
The purpose of this study is to elucidate the anti-inflammatory effect of lobeglitazone (LOBE) in lipopolysaccharide (LPS)-induced bone-marrow derived macrophages (BMDMs). We induced nitric oxide (NO) production and pro-inflammatory gene expression through LPS treatment in BMDMs. The changes of NO release and expression of pro-inflammatory mediators by LOBE were assessed via NO quantification assay and a real-time quantitative polymerase chain reaction (RT-qPCR), respectively. In addition, the regulatory effect of LOBE on activation of mitogen-activated protein kinase (MAPK) signaling pathway was investigated by measuring the phosphorylation state of extracellular regulatory protein (ERK) and c-Jun N-terminal kinase (JNK) proteins by Western blot. Our results show that LOBE significantly reduced LPS-induced NO production and pro-inflammatory gene expression of interleukin-1β (IL-1β), IL-6, inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), and monocyte chemoattractant protein-1 (MCP-1). Moreover, LOBE reduced phosphorylation levels of ERK and JNK of MAPK signaling pathway. In conclusion, LOBE exerts an anti-inflammatory effect in LPS-induced BMDMs by suppression of NO production and pro-inflammatory gene expression, and this effect is potentially through inhibition of the MARK signaling pathway.
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Yang CM, Yang CC, Hsiao LD, Yu CY, Tseng HC, Hsu CK, Situmorang JH. Upregulation of COX-2 and PGE 2 Induced by TNF-α Mediated Through TNFR1/MitoROS/PKCα/P38 MAPK, JNK1/2/FoxO1 Cascade in Human Cardiac Fibroblasts. J Inflamm Res 2021; 14:2807-2824. [PMID: 34234507 PMCID: PMC8254141 DOI: 10.2147/jir.s313665] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 05/28/2021] [Indexed: 12/25/2022] Open
Abstract
Purpose Tumor necrosis factor-α (TNF-α) has been shown to exert as a pathogenic factor in cardiac fibrosis and heart failure which were associated with the up-regulation of cyclooxygenase (COX)-2/prostaglandin E2 (PGE2) axis. However, whether TNF-α-induced COX-2/PGE2 upregulation mediated through ROS-dependent cascade remains elusive in human cardiac fibroblasts (HCFs). This study aims to address the underlying mechanisms of TNF-α-induced COX-2/PGE2 expression. Methods Here, we used TNF receptor neutralizing antibody (TNFR nAb), pharmacologic inhibitors, and siRNAs to dissect the involvement of signaling components examined by Western blot and ELISA in TNF-α-mediated responses in HCFs. MitoSOX Red was used to measure mitoROS generation. Isolation of subcellular fractions was performed to determine membrane translocation of PKCα. Promoter luciferase assay and chromatin immunoprecipitation (ChIP) assay were used to determine the role of transcription factor. Results We found that TNF-α time- and concentration-dependently upregulated COX-2 protein and mRNA expression as well as PGE2 synthesis which was attenuated by TNFR1 nAb, the inhibitor of mitochondrial ROS scavenger (MitoTEMPO), protein kinase C [(PKC)α, Gö6976], p38 MAPK [p38 inhibitor VIII, (p38i VIII)], JNK1/2 (SP600125), or forkhead box protein O1 [(FoxO1), AS1842856], and transfection with their respective siRNAs in HCFs. TNF-α-stimulated PKCα phosphorylation was inhibited by TNFR1 nAb, MitoTEMPO, or Gö6976. TNF-α stimulated phosphorylation of p38 MAPK and JNK1/2 was attenuated by TNFR1 nAb, MitoTEMPO, Gö6976, and their inhibitors p38i VIII and SP600125. Moreover, TNF-α-triggered FoxO1 phosphorylation was abolished by AS1842856, TNFR1 nAb, and its upstream inhibitors MitoTEMPO, Gö6976, p38i VIII, and SP600125. Phosphorylation of FoxO1 could enhance its interaction with the COX-2 promoter element revealed by ChIP assay, which was attenuated by AS1842856. Conclusion Our results suggested that TNF-α-induced COX-2/PGE2 upregulation is mediated through TNFR1-dependent MitoROS/PKCα/p38 MAPK and JNK1/2 cascade to activate FoxO1 binding with the COX-2 promoter in HCFs.
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Affiliation(s)
- Chuen-Mao Yang
- Department of Pharmacology, College of Medicine, China Medical University, Taichung, 40402, Taiwan.,Ph.D. Program for Biotech Pharmaceutical Industry, China Medical University, Taichung, 40402, Taiwan.,Department of Post-Baccalaureate Veterinary Medicine, College of Medical and Health Science, Asia University, Wufeng, Taichung, 41354, Taiwan
| | - Chien-Chung Yang
- Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital at Tao-Yuan, Kwei-San, Tao-Yuan, 33302, Taiwan.,School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Kwei-San, Tao-Yuan, 33302, Taiwan
| | - Li-Der Hsiao
- Department of Pharmacology, College of Medicine, China Medical University, Taichung, 40402, Taiwan
| | - Chia-Ying Yu
- Department of Pharmacology, College of Medicine, China Medical University, Taichung, 40402, Taiwan
| | - Hui-Ching Tseng
- Department of Pharmacology, College of Medicine, China Medical University, Taichung, 40402, Taiwan
| | - Chih-Kai Hsu
- Department of Pharmacology, College of Medicine, China Medical University, Taichung, 40402, Taiwan
| | - Jiro Hasegawa Situmorang
- Department of Pharmacology, College of Medicine, China Medical University, Taichung, 40402, Taiwan
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Protective Effect of Membrane-Free Stem Cells against Lipopolysaccharide and Interferon-Gamma-Stimulated Inflammatory Responses in RAW 264.7 Macrophages. Int J Mol Sci 2021; 22:ijms22136894. [PMID: 34198981 PMCID: PMC8268248 DOI: 10.3390/ijms22136894] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/18/2021] [Accepted: 06/25/2021] [Indexed: 11/20/2022] Open
Abstract
Recently, adipose-derived stem cells (ADSCs) are considered to be ideal for application in cell therapy or tissue regeneration, mainly due to their wide availability and easy access. In this study, we examined the anti-inflammatory effects of membrane-free stem cell extract (MFSC-Ex) derived from ADSCs against lipopolysaccharide (LPS)/interferon-gamma (IFN-γ) on RAW 264.7 macrophage cells. Exposure of RAW macrophages to LPS and IFN-γ stimuli induced high levels of nitric oxide (NO), cyclooxygenase-2 (COX-2), and prostaglandin E2 (PGE2) production. However, pretreatment with MFSC-Ex inhibited LPS/IFN-γ-induced these pro-inflammatory mediators. To clarify the molecular mechanisms underlying the anti-inflammatory property of MFSC-Ex, we analyzed nuclear factor-kappa B (NF-κB) and mitogen-activated protein kinases (MAPKs) protein expressions by Western blotting. Our study showed that treatment of MFSC-Ex significantly down-regulated inducible nitric oxide synthase (iNOS) and COX-2 protein expressions. Furthermore, phosphorylation of extracellular signal-regulated kinase (ERK) and p38 was also blocked by treatment with MFSC-Ex, indicating that inhibitory effect of MFSC-Ex on MAPK signaling cascade may attribute to inactivation of NF-κB. From these findings, we suggest that MFSC-Ex exert anti-inflammatory activities, which suppressed LPS/IFN-γ-induced production of NO, COX-2 and PGE2 by regulation of NF-κB and MAPK signaling pathway in RAW 264.7 macrophages. In conclusion, MFSC-Ex might provide a new therapeutic opportunity to treatment of inflammatory-related diseases.
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Functions of ROS in Macrophages and Antimicrobial Immunity. Antioxidants (Basel) 2021; 10:antiox10020313. [PMID: 33669824 PMCID: PMC7923022 DOI: 10.3390/antiox10020313] [Citation(s) in RCA: 216] [Impact Index Per Article: 72.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/16/2021] [Accepted: 02/17/2021] [Indexed: 02/07/2023] Open
Abstract
Reactive oxygen species (ROS) are a chemically defined group of reactive molecules derived from molecular oxygen. ROS are involved in a plethora of processes in cells in all domains of life, ranging from bacteria, plants and animals, including humans. The importance of ROS for macrophage-mediated immunity is unquestioned. Their functions comprise direct antimicrobial activity against bacteria and parasites as well as redox-regulation of immune signaling and induction of inflammasome activation. However, only a few studies have performed in-depth ROS analyses and even fewer have identified the precise redox-regulated target molecules. In this review, we will give a brief introduction to ROS and their sources in macrophages, summarize the versatile roles of ROS in direct and indirect antimicrobial immune defense, and provide an overview of commonly used ROS probes, scavengers and inhibitors.
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Bhunyakarnjanarat T, Udompornpitak K, Saisorn W, Chantraprapawat B, Visitchanakun P, Dang CP, Issara-Amphorn J, Leelahavanichkul A. Prominent Indomethacin-Induced Enteropathy in Fcgriib Defi-cient lupus Mice: An Impact of Macrophage Responses and Immune Deposition in Gut. Int J Mol Sci 2021; 22:1377. [PMID: 33573095 PMCID: PMC7866536 DOI: 10.3390/ijms22031377] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/19/2021] [Accepted: 01/23/2021] [Indexed: 02/06/2023] Open
Abstract
A high dose of NSAIDs, a common analgesic, might induce lupus activity through several NSAIDs adverse effects including gastrointestinal permeability defect (gut leakage) and endotoxemia. Indomethacin (25 mg/day) was orally administered for 7 days in 24-wk-old Fc gamma receptor IIb deficient (FcgRIIb-/-) mice, an asymptomatic lupus model (increased anti-dsDNA without lupus nephritis), and age-matched wild-type (WT) mice. Severity of indomethacin-induced enteropathy in FcgRIIb-/- mice was higher than WT mice as demonstrated by survival analysis, intestinal injury (histology, immune-deposition, and intestinal cytokines), gut leakage (FITC-dextran assay and endotoxemia), serum cytokines, and lupus characteristics (anti-dsDNA, renal injury, and proteinuria). Prominent responses of FcgRIIb-/- macrophages toward lipopolysaccharide (LPS) compared to WT cells due to the expression of only activating-FcgRs without inhibitory-FcgRIIb were demonstrated. Extracellular flux analysis indicated the greater mitochondria activity (increased respiratory capacity and respiratory reserve) in FcgRIIb-/- macrophages with a concordant decrease in glycolysis activity when compared to WT cells. In conclusion, gut leakage-induced endotoxemia is more severe in indomethacin-administered FcgRIIb-/- mice than WT, possibly due to the enhanced indomethacin toxicity from lupus-induced intestinal immune-deposition. Due to a lack of inhibitory-FcgRIIb expression, mitochondrial function, and cytokine production of FcgRIIb-/- macrophages were more prominent than WT cells. Hence, lupus disease-activation from NSAIDs-enteropathy-induced gut leakage is possible.
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Affiliation(s)
- Thansita Bhunyakarnjanarat
- Medical Microbiology, Interdisciplinary and International Program, Graduate School, Chulalongkorn University, Bangkok 10330, Thailand;
- Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Translational Research in Inflammation and Immunology Research Unit (TRIRU), Department of Microbiology, Chulalongkorn University, Bangkok 10330, Thailand; (K.U.); (W.S.); (B.C.); (P.V.); (C.P.D.); (J.I.-A.)
| | - Kanyarat Udompornpitak
- Translational Research in Inflammation and Immunology Research Unit (TRIRU), Department of Microbiology, Chulalongkorn University, Bangkok 10330, Thailand; (K.U.); (W.S.); (B.C.); (P.V.); (C.P.D.); (J.I.-A.)
| | - Wilasinee Saisorn
- Translational Research in Inflammation and Immunology Research Unit (TRIRU), Department of Microbiology, Chulalongkorn University, Bangkok 10330, Thailand; (K.U.); (W.S.); (B.C.); (P.V.); (C.P.D.); (J.I.-A.)
| | - Bhumdhanin Chantraprapawat
- Translational Research in Inflammation and Immunology Research Unit (TRIRU), Department of Microbiology, Chulalongkorn University, Bangkok 10330, Thailand; (K.U.); (W.S.); (B.C.); (P.V.); (C.P.D.); (J.I.-A.)
| | - Peerapat Visitchanakun
- Translational Research in Inflammation and Immunology Research Unit (TRIRU), Department of Microbiology, Chulalongkorn University, Bangkok 10330, Thailand; (K.U.); (W.S.); (B.C.); (P.V.); (C.P.D.); (J.I.-A.)
| | - Cong Phi Dang
- Translational Research in Inflammation and Immunology Research Unit (TRIRU), Department of Microbiology, Chulalongkorn University, Bangkok 10330, Thailand; (K.U.); (W.S.); (B.C.); (P.V.); (C.P.D.); (J.I.-A.)
| | - Jiraphorn Issara-Amphorn
- Translational Research in Inflammation and Immunology Research Unit (TRIRU), Department of Microbiology, Chulalongkorn University, Bangkok 10330, Thailand; (K.U.); (W.S.); (B.C.); (P.V.); (C.P.D.); (J.I.-A.)
| | - Asada Leelahavanichkul
- Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Translational Research in Inflammation and Immunology Research Unit (TRIRU), Department of Microbiology, Chulalongkorn University, Bangkok 10330, Thailand; (K.U.); (W.S.); (B.C.); (P.V.); (C.P.D.); (J.I.-A.)
- Department of Microbiology, Immunology Unit, Chulalongkorn University, Bangkok 10330, Thailand
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Procerolides A-B from Microcionidae marine sponge Clathria procera: Anti-inflammatory macrocylic lactones with selective cyclooxygenase-2 attenuation properties. Bioorg Chem 2021; 109:104663. [PMID: 33581508 DOI: 10.1016/j.bioorg.2021.104663] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 01/07/2021] [Accepted: 01/12/2021] [Indexed: 10/22/2022]
Abstract
Cyclooxygenase-2 has been recognized to catalyze the formation of inflammatory prostaglandins from arachidonic acid. Attenuation potential against cyclooxygenase-2 coupled with greater anti-inflammatory selectivity index were contemplated to be vital indicators to assess anti-inflammatory activities of bioactive compounds. In the present study, two undescribed fourteen-membered macrocyclic lactones, procerolide A and B were isolated to homogeneity from the organic extract of the marine sponge Clathria procera (family: Microcionidae). Procerolide B exhibited greater attenuation potential against cyclooxygenase-2 (IC50 0.89 mM) than that displayed by procerolide A, whereas 5-lipoxygenase inhibitory activity of procerolide B (IC50 1.08 mM) was significantly greater than that displayed by procerolide A (IC50 0.95 mM) and anti-inflammatory agent ibuprofen (IC50 4.50 mM). Additionally, greater anti-inflammatory selectivity index of the procerolides (~1.3) than the synthetic agent (0.43) was accounted for the selective inhibition of the compounds towards cyclooxygenase-2. Higher electronic properties (topological polar surface area of > 100) along with lesser steric properties (molar volume < 300 cm3) of the compounds compared to the standard supported their significant anti-inflammatory potential. Additionally, procerolide B exhibited comparatively lesser binding energy with aminoacyl residues of cyclooxygenase-2 (-9.82 kcal/mol) thereby recognizing its prospective therapeutic use against inflammatory pathogenesis.
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Machida T, Endo TH, Oyoshi R, Yutani M, Machida M, Shiga S, Murakami H, Hiraide S, Hirafuji M, Iizuka K. Abnormal Pressure Stress Reduces Interleukin-1β-Induced Cyclooxygenase-2 Expression in Cultured Rat Vascular Smooth Muscle Cells. Biol Pharm Bull 2021; 44:853-860. [PMID: 34078818 DOI: 10.1248/bpb.b21-00078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Elevated mechanical stress on blood vessels associated with hypertension has a direct effect on the function of vascular endothelial cells and vascular smooth muscle cells (VSMCs). In the present study, we have identified the effect of pulsatile pressure stress on cyclooxygenase-2 (COX-2) expression induced by interleukin (IL)-1β in cultured rat VSMCs. VSMCs were isolated from aortic media of Wistar rats and cultured. Pulsatile pressure applied to VSMCs was repeatedly given between either 80 and 160 mmHg, which simulates systolic hypertension, or 80 and 120 mmHg, which simulates normal blood pressure, at a frequency of 4 cycles per min using our original apparatus. Pressure loading that simulates systolic hypertension reduced IL-1β-induced COX-2 expression. The pressure also inhibited the rapid and transient phosphorylation of extracellular signal-regulated kinase (ERK) induced by IL-1β. IL-1β-induced COX-2 expression was significantly inhibited by a specific conventional protein kinase C (PKC) inhibitor. Pressure loading that simulates systolic hypertension also reduced phorbol myristate 13-acetate (PMA) (a PKC activator)-induced COX-2 expression and the rapid and transient phosphorylation of ERK. Pressure loading that simulates normal blood pressure had no effect on IL-1β- and PMA-induced COX-2 expression. The present study shows that pressure stress between 80 and 160 mmHg, which simulates systolic hypertension reduces IL-1β-induced COX-2 expression by affecting a mechanism involving PKC and ERK signaling pathways. Downregulation of COX-2 expression in VSMCs by abnormal pressure stress may further worsen local vascular injury associated with hypertension.
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Affiliation(s)
- Takuji Machida
- Department of Pharmacological Sciences, School of Pharmaceutical Sciences, Health Sciences University of Hokkaido
| | - Tomoko Hinse Endo
- Department of Pharmacological Sciences, School of Pharmaceutical Sciences, Health Sciences University of Hokkaido
| | - Riho Oyoshi
- Department of Pharmacological Sciences, School of Pharmaceutical Sciences, Health Sciences University of Hokkaido
| | - Mikiko Yutani
- Department of Pharmacological Sciences, School of Pharmaceutical Sciences, Health Sciences University of Hokkaido
| | - Maiko Machida
- Division of Pharmacotherapy, Faculty of Pharmaceutical Sciences, Hokkaido University of Science
| | - Saki Shiga
- Department of Pharmacological Sciences, School of Pharmaceutical Sciences, Health Sciences University of Hokkaido
| | - Hina Murakami
- Department of Pharmacological Sciences, School of Pharmaceutical Sciences, Health Sciences University of Hokkaido
| | - Sachiko Hiraide
- Department of Pharmacological Sciences, School of Pharmaceutical Sciences, Health Sciences University of Hokkaido
| | - Masahiko Hirafuji
- Department of Pharmacological Sciences, School of Pharmaceutical Sciences, Health Sciences University of Hokkaido
| | - Kenji Iizuka
- Department of Pharmacological Sciences, School of Pharmaceutical Sciences, Health Sciences University of Hokkaido
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microRNA-103a-3p confers protection against lipopolysaccharide-induced sepsis and consequent multiple organ dysfunction syndrome by targeting HMGB1. INFECTION GENETICS AND EVOLUTION 2020; 89:104681. [PMID: 33333289 DOI: 10.1016/j.meegid.2020.104681] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 12/08/2020] [Accepted: 12/12/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Sepsis and subsequent multiple organ dysfunction syndrome (MODS) have high global incidence and mortality rate, imposing tremendous health burden. microRNAs (miRNAs or miRs) are implicated in the pathogenesis of sepsis and MODS. The aim of this study is to explore the potential mechanisms of miR-103a-3p targeted high mobility group box 1 (HMGB1) involvement in the pathogenesis of sepsis complicated with multiple organ dysfunction syndrome (MODS). METHODS A mouse sepsis model was induced by lipopolysaccharide (LPS). Bone marrow-derived macrophages were collected and LPS was used to establish a cellular inflammation model. Targeted binding between miR-103a-3p and HMGB1 was verified by a double luciferase assay and their roles in LPS-induced sepsis were further explored using gain-of-function experiments. RESULTS miR-103a-3p was decreased while HMGB1 was increased in sepsis. In LPS-induced mouse sepsis models, the downregulation of HMGB1 was found to result in reductions in NO, TNF-α, IL-1β, IL-6, lung myeloperoxidase activity, pulmonary microvascular albumin leakage, serum alanine aminotransferase, aspartate aminotransferase activity, and lung and liver tissue apoptosis. Additionally, decreased HMGB1 blunted the inflammatory response and increased survival rate of modeled mice. Importantly, HMGB1 was confirmed to a target gene of miR-103a-3p. In cellular inflammation models, miR-103a-3p was found to alleviate LPS-induced sepsis and MODS in vitro by decreasing HMGB1. CONCLUSIONS Taken together, our results demonstrated the inhibitory role of miR-103a-3p in sepsis via inhibiting HMGB1 expression.
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Silveira TL, Veloso ES, Gonçalves INN, Costa RF, Rodrigues MA, Cassali GD, Del Puerto HL, Pang LY, Argyle DJ, Ferreira E. Cyclooxygenase-2 expression is associated with infiltration of inflammatory cells in oral and skin canine melanomas. Vet Comp Oncol 2020; 18:727-738. [PMID: 32323423 DOI: 10.1111/vco.12601] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 02/13/2020] [Accepted: 02/18/2020] [Indexed: 12/18/2022]
Abstract
Melanoma is a fast-growing tumour in dogs and represents 7% of the total malignant neoplasms from the skin and is the most common tumour found in the oral cavity. In these tumours, high expression of cyclooxygenase-2 (COX-2) is associated with a poor prognosis. The aim of this study was to verify if the overexpression of COX-2 is related to the modulation of lymphocytes and if it is associated with the angiogenic and proliferative capacity of the melanoma. Canine melanoma samples (n = 85) were analysed by immunohistochemistry to detect the expression of S-100, Melan-A, PNL-2, COX-2, Factor VIII, Ki-67 and immune cells markers (CD3, CD4, FOXP3 and MAC387); and expression levels of MAC387, NOS and CD206 were determined by immunofluorescence. Our study showed a concurrent difference between the expression of COX-2 and inflammatory cell infiltration: Oral melanomas showed positivity for COX-2 in 34% of the cases and this expression was associated with CD3 positivity in the inflammatory infiltrate and angiogenesis; whereas cutaneous melanomas presented positivity for COX-2 in 42% of the cases and this expression was associated with positive staining for CD3, CD4, FOXP3 and MAC387. These markers are associated with inflammatory cells, angiogenesis and proliferation. Interestingly, melanomas were highly infiltrated by FOXP3+ cells, this is related to angiogenesis, whereas CD3, CD4 and MAC387 expression was only associated with cutaneous melanomas. The macrophage profile analysis showed that both oral and cutaneous melanomas with low COX-2 expression have an M1 phenoptype, whereas the cases with high COX-2 expression demonstrate a hybrid M1/M2 profile pattern. We concluded that the COX-2 is overexpressed in 42% of cutaneous melanomas and in 34% of oral melanomas, with a direct association with angiogenesis, proliferation, and intratumoral lymphocyte infiltration. We propose that COX-2 is a key regulator of immune cell infiltration and may drive tumour associated macrophage activation.
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Affiliation(s)
- Tatiany L Silveira
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Emerson S Veloso
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Ivy N N Gonçalves
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Renato F Costa
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Michele A Rodrigues
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Geovanni D Cassali
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Helen L Del Puerto
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Lisa Y Pang
- The Roslin Institute, The University of Edinburgh, Edinburgh, Scotland
| | - David J Argyle
- The Roslin Institute, The University of Edinburgh, Edinburgh, Scotland
| | - Enio Ferreira
- Department of Pathology, Federal University of Minas Gerais, Belo Horizonte, Brazil
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22
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Therapeutic Manipulation of Macrophages Using Nanotechnological Approaches for the Treatment of Osteoarthritis. NANOMATERIALS 2020; 10:nano10081562. [PMID: 32784839 PMCID: PMC7466380 DOI: 10.3390/nano10081562] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/31/2020] [Accepted: 08/07/2020] [Indexed: 02/06/2023]
Abstract
Osteoarthritis (OA) is the most common joint pathology causing severe pain and disability. Macrophages play a central role in the pathogenesis of OA. In the joint microenvironment, macrophages with an M1-like pro-inflammatory phenotype induce chronic inflammation and joint destruction, and they have been correlated with the development and progression of the disease, while the M2-like anti-inflammatory macrophages support the recovery of the disease, promoting tissue repair and the resolution of inflammation. Nowadays, the treatment of OA in the clinic relies on systemic and/or intra-articular administration of anti-inflammatory and pain relief drugs, as well as surgical interventions for the severe cases (i.e., meniscectomy). The disadvantages of the pharmacological therapy are related to the chronic nature of the disease, requiring prolonged treatments, and to the particular location of the pathology in joint tissues, which are separated anatomical compartments with difficult access for the drugs. To overcome these challenges, nanotechnological approaches have been investigated to improve the delivery of drugs toward macrophages into the diseased joint. This strategy may offer advantages by reducing off-target toxicities and improving long-term therapeutic efficacy. In this review, we describe the nanomaterial-based approaches designed so far to directly or indirectly manipulate macrophages for the treatment of osteoarthritis.
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Zheng X, Weigert A, Reu S, Guenther S, Mansouri S, Bassaly B, Gattenlöhner S, Grimminger F, Pullamsetti S, Seeger W, Winter H, Savai R. Spatial Density and Distribution of Tumor-Associated Macrophages Predict Survival in Non-Small Cell Lung Carcinoma. Cancer Res 2020; 80:4414-4425. [PMID: 32699134 DOI: 10.1158/0008-5472.can-20-0069] [Citation(s) in RCA: 113] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 06/05/2020] [Accepted: 07/14/2020] [Indexed: 11/16/2022]
Abstract
The respective antitumoral and protumoral roles of M1 and M2 tumor-associated macrophages (TAM) typify the complexity of macrophage function in cancer. In lung cancer, density and topology of distinct TAM phenotypes at the tumor center (TC) versus the invasive margin (IM) are largely unknown. Here, we investigated TAM subtype density and distribution between TC and IM in human lung cancer and TAM associations with overall survival. Macrophages isolated from adjacent nontumor tissue (NM), the TC (TC-TAM), and the IM (IM-TAM) were analyzed with RNA-sequencing (RNA-seq). Lung tumor tissue microarrays from 104 patient samples were constructed. M1 and M2 TAMs were identified using multiplex immunofluorescence staining and a tumor cell-TAM proximity analysis was performed. RNA-seq identified marked differences among NM, TC-TAM, and IM-TAM. On the basis of a panel of five selected markers (CD68, IL12, CCR7, CD163, and ALOX15), M2 predominance over M1 and M2 proximity to tumor cells was observed, especially at IM. Tumor cell proximity to TAM was linked with tumor cell survival and hypoxia was associated with accumulation of M2 TAM. Notably, lower density of M1 TC-TAM and higher proximity of tumor cells to M2 IM-TAM or lower proximity to M1 IM-TAM were linked with poor survival. In addition, three novel molecules (UBXN4, MFSD12, and ACTR6) from RNA-seq served as potential prognostic markers for lung cancer, and M2 predominance and juxtaposition of M2 TAM near tumor cells were associated with poor survival. Together, our results reveal the marked heterogeneity of TAM populations in different tumor regions, with M2 TAM predominance, particularly at IM. SIGNIFICANCE: This study underlines the significance of the density, spatial distribution, and gene expression of TAM phenotypes as prognostic factors for overall survival in lung cancer. GRAPHICAL ABSTRACT: http://cancerres.aacrjournals.org/content/canres/80/20/4414/F1.large.jpg.
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Affiliation(s)
- Xiang Zheng
- Max Planck Institute for Heart and Lung Research, German Center for Lung Research (DZL), Cardio-Pulmonary Institute (CPI), Bad Nauheim, Germany
| | - Andreas Weigert
- Institute of Biochemistry I, Faculty of Medicine, Goethe University Frankfurt, Frankfurt, Germany
| | - Simone Reu
- Institute of Pathology, University of Würzburg, Würzburg, Germany
| | - Stefan Guenther
- Max Planck Institute for Heart and Lung Research, German Center for Lung Research (DZL), Cardio-Pulmonary Institute (CPI), Bad Nauheim, Germany
| | - Siavash Mansouri
- Max Planck Institute for Heart and Lung Research, German Center for Lung Research (DZL), Cardio-Pulmonary Institute (CPI), Bad Nauheim, Germany
| | - Birgit Bassaly
- Department of Pathology, Justus Liebig University, Giessen, Germany
| | | | - Friedrich Grimminger
- Department of Internal Medicine, German Center for Lung Research (DZL), Cardio-Pulmonary Institute (CPI), Justus Liebig University, Giessen, Germany
| | - Soni Pullamsetti
- Max Planck Institute for Heart and Lung Research, German Center for Lung Research (DZL), Cardio-Pulmonary Institute (CPI), Bad Nauheim, Germany.,Department of Internal Medicine, German Center for Lung Research (DZL), Cardio-Pulmonary Institute (CPI), Justus Liebig University, Giessen, Germany
| | - Werner Seeger
- Max Planck Institute for Heart and Lung Research, German Center for Lung Research (DZL), Cardio-Pulmonary Institute (CPI), Bad Nauheim, Germany.,Department of Internal Medicine, German Center for Lung Research (DZL), Cardio-Pulmonary Institute (CPI), Justus Liebig University, Giessen, Germany.,Institute for Lung Health (ILH), Justus Liebig University, Giessen, Germany
| | - Hauke Winter
- Department of Thoracic Surgery, Translational Lung Research Center (TLRC) Thoraxklinik at the University Hospital Heidelberg, German Center for Lung Research (DZL), Heidelberg, Germany
| | - Rajkumar Savai
- Max Planck Institute for Heart and Lung Research, German Center for Lung Research (DZL), Cardio-Pulmonary Institute (CPI), Bad Nauheim, Germany. .,Department of Internal Medicine, German Center for Lung Research (DZL), Cardio-Pulmonary Institute (CPI), Justus Liebig University, Giessen, Germany.,Institute for Lung Health (ILH), Justus Liebig University, Giessen, Germany.,Frankfurt Cancer Institute (FCI), Goethe University, Frankfurt am Main, Germany
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24
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Peng Y, Lu J, Liu F, Lee C, Lee H, Ho Y, Hsieh T, Wu C, Wang C. Astaxanthin attenuates joint inflammation induced by monosodium urate crystals. FASEB J 2020; 34:11215-11226. [DOI: 10.1096/fj.202000558rr] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 06/17/2020] [Accepted: 06/18/2020] [Indexed: 01/10/2023]
Affiliation(s)
- Yi‐Jen Peng
- Department of Pathology Tri‐Service General Hospital, National Defense Medical Center Taipei Taiwan
| | - Jeng‐Wei Lu
- Department of Biological Sciences National University of Singapore Singapore Singapore
| | - Feng‐Cheng Liu
- Rheumatology/Immunology and Allergy, Department of Medicine Tri‐Service General Hospital, National Defense Medical Center Taipei Taiwan
| | - Chian‐Her Lee
- Department of Orthopedics, School of Medicine, College of Medicine Taipei Medical University Hospital, Taipei Medical University Taipei Taiwan
| | - Herng‐Sheng Lee
- Department of Pathology and Laboratory Medicine Kaohsiung Veterans General Hospital Kaohsiung Taiwan
| | - Yi‐Jung Ho
- School of Pharmacy, Graduate Institute of Life Sciences National Defense Medical Center Taipei Taiwan
| | - Tsung‐Hsun Hsieh
- Department of Pathology Tri‐Service General Hospital, National Defense Medical Center Taipei Taiwan
| | - Chia‐Chun Wu
- Department of Orthopedics Tri‐Service General Hospital, National Defense Medical Center Taipei Taiwan
| | - Chih‐Chien Wang
- Department of Orthopedics Tri‐Service General Hospital, National Defense Medical Center Taipei Taiwan
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25
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Yadav AK, Reinhardt CJ, Arango AS, Huff HC, Dong L, Malkowski MG, Das A, Tajkhorshid E, Chan J. An Activity-Based Sensing Approach for the Detection of Cyclooxygenase-2 in Live Cells. Angew Chem Int Ed Engl 2020; 59:3307-3314. [PMID: 31854058 PMCID: PMC7416425 DOI: 10.1002/anie.201914845] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Indexed: 01/05/2023]
Abstract
Cyclooxygenase-2 (COX-2) overexpression is prominent in inflammatory diseases, neurodegenerative disorders, and cancer. Directly monitoring COX-2 activity within its native environment poses an exciting approach to account for and illuminate the effect of the local environments on protein activity. Herein, we report the development of CoxFluor, the first activity-based sensing approach for monitoring COX-2 within live cells with confocal microscopy and flow cytometry. CoxFluor strategically links a natural substrate with a dye precursor to engage both the cyclooxygenase and peroxidase activities of COX-2. This catalyzes the release of resorufin and the natural product, as supported by molecular dynamics and ensemble docking. CoxFluor enabled the detection of oxygen-dependent changes in COX-2 activity that are independent of protein expression within live macrophage cells.
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Affiliation(s)
- Anuj K Yadav
- Department of Chemistry, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Christopher J Reinhardt
- Department of Chemistry, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Andres S Arango
- Center for Biophysics and Quantitative Biology, Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Hannah C Huff
- Department of Chemistry, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Liang Dong
- Department of Structural Biology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, 14203, USA
| | - Michael G Malkowski
- Department of Structural Biology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, 14203, USA
| | - Aditi Das
- Center for Biophysics and Quantitative Biology, Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Department of Comparative Biosciences, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Emad Tajkhorshid
- Department of Chemistry, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Center for Biophysics and Quantitative Biology, Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Jefferson Chan
- Department of Chemistry, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
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26
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Yadav AK, Reinhardt CJ, Arango AS, Huff HC, Dong L, Malkowski MG, Das A, Tajkhorshid E, Chan J. An Activity‐Based Sensing Approach for the Detection of Cyclooxygenase‐2 in Live Cells. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914845] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Anuj K. Yadav
- Department of Chemistry Beckman Institute for Advanced Science and Technology University of Illinois at Urbana-Champaign Urbana IL 61801 USA
| | - Christopher J. Reinhardt
- Department of Chemistry Beckman Institute for Advanced Science and Technology University of Illinois at Urbana-Champaign Urbana IL 61801 USA
| | - Andres S. Arango
- Center for Biophysics and Quantitative Biology Department of Biochemistry University of Illinois at Urbana-Champaign Urbana IL 61801 USA
| | - Hannah C. Huff
- Department of Chemistry Beckman Institute for Advanced Science and Technology University of Illinois at Urbana-Champaign Urbana IL 61801 USA
| | - Liang Dong
- Department of Structural Biology Jacobs School of Medicine and Biomedical Sciences University at Buffalo Buffalo NY 14203 USA
| | - Michael G. Malkowski
- Department of Structural Biology Jacobs School of Medicine and Biomedical Sciences University at Buffalo Buffalo NY 14203 USA
| | - Aditi Das
- Center for Biophysics and Quantitative Biology Department of Biochemistry University of Illinois at Urbana-Champaign Urbana IL 61801 USA
- Department of Comparative Biosciences University of Illinois at Urbana-Champaign Urbana IL 61801 USA
| | - Emad Tajkhorshid
- Department of Chemistry Beckman Institute for Advanced Science and Technology University of Illinois at Urbana-Champaign Urbana IL 61801 USA
- Center for Biophysics and Quantitative Biology Department of Biochemistry University of Illinois at Urbana-Champaign Urbana IL 61801 USA
| | - Jefferson Chan
- Department of Chemistry Beckman Institute for Advanced Science and Technology University of Illinois at Urbana-Champaign Urbana IL 61801 USA
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Shrivastava R, Shukla N. Attributes of alternatively activated (M2) macrophages. Life Sci 2019; 224:222-231. [PMID: 30928403 DOI: 10.1016/j.lfs.2019.03.062] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 03/21/2019] [Accepted: 03/25/2019] [Indexed: 01/22/2023]
Abstract
Macrophages are cells of innate immunity and are derived from circulating monocytes and embryonic yolk sac. They exhibit high plasticity and polarize functionally in response to stimulus triggering it into classically activated M1 macrophages and alternatively activated M2 macrophages. This review summarizes markers of M2 macrophages like transmembrane surface receptors and signaling cascades initiated on their activation; cytokine and chemokine repertoires along with their receptors; and genetic markers and their involvement in immunomodulation. The detailed discussion emphasizes the role of these markers in imparting functional benefits to this subset of macrophages which define their venture in various physiological and pathological conditions.
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Affiliation(s)
- Richa Shrivastava
- Department of Pharmacy, Birla Institute of Technology and Sciences (BITS), Pilani Campus, Pilani, Rajasthan 333031, India.
| | - Nidhi Shukla
- Division of Endocrinology, CSIR-Central Drug Research Institute (CDRI), Lucknow 226031, India
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28
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Mitchell CM, El Jordi O, Yamamoto BK. Inflammatory mechanisms of abused drugs. ROLE OF INFLAMMATION IN ENVIRONMENTAL NEUROTOXICITY 2019. [DOI: 10.1016/bs.ant.2018.10.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Exposure of Macrophages to Low-Dose Gadolinium-Based Contrast Medium: Impact on Oxidative Stress and Cytokines Production. CONTRAST MEDIA & MOLECULAR IMAGING 2018; 2018:3535769. [PMID: 30627059 PMCID: PMC6305030 DOI: 10.1155/2018/3535769] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 08/25/2018] [Accepted: 10/17/2018] [Indexed: 01/30/2023]
Abstract
The toxicity of gadolinium-based contrast agents (GBCAs) has drawn a lot of attention. Nephrogenic systemic fibrosis (NSF), a lethal disease related to the use of GBCAs, is still not understood. Recently, gadolinium retention is found in brain tissues after repeated use of GBCAs in magnetic resonance imaging (MRI). However, most of the works investigating the toxicity of GBCAs are focusing on its high-concentration (0.5–10 mM) part, which is not reflective of the physiological conditions in human beings. Macrophages play a regulatory role in immune responses and are responsible for the fibrosis process. Their role in gadolinium retention and the pathogenesis of NSF, however, has seldom been investigated. This study aimed to evaluate the immune response generated by macrophages (RAW 264.7) exposing to low levels of GBCAs. The incubation concentration of GBCAs, including Omniscan®, Primovist®, Magnevist®, and Gadovist®, is proportional to the level of gadolinium uptake when detected via inductively coupled plasma mass spectrometry (ICP-MS) and imaged by MRI, whereas Primovist® treatment groups have highest gadolinium uptake among all of the tested concentrations. Low-concentration (2.5 μmol/L) Gd chloride or GBCAs exposure promoted the reactive production of oxygen species (ROS), nitrate/nitrite, prostaglandin E2 (PGE2), and suppressed the potential of mitochondrial membrane. There was higher ROS, nitrate/nitrite, and PGE2 production in the Primovist®, Omniscan®, and Magnevist® groups compared to the Gadovist® group. In face of lipopolysaccharide (LPS) stimulation, Primovist®, Omniscan®, and Magnevist® groups exhibited elevated nitrite/nitrate and suppressed IL-1β secretion and IL-6 and IL-10 secretion. Moreover, upon LPS stimulation, there is decreased TNF-α secretion 4 hours after Primovist® or Omiscan® exposure but the TNF-α secretion increased at 24 hours. Our data suggest that there is upregulated inflammation even in the presence of low levels of GBCAs, even similar to the physiological condition in murine macrophage. Further investigation of GBCAs on the human macrophage or in vivo animal study may clarify the role of macrophage on the pathogenesis of NSF and other GBCAs-related disease.
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30
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Kannen V, Sakita JY, Carneiro ZA, Bader M, Alenina N, Teixeira RR, de Oliveira EC, Brunaldi MO, Gasparotto B, Sartori DC, Fernandes CR, Silva JS, Andrade MV, Silva WA, Uyemura SA, Garcia SB. Mast Cells and Serotonin Synthesis Modulate Chagas Disease in the Colon: Clinical and Experimental Evidence. Dig Dis Sci 2018; 63:1473-1484. [PMID: 29569002 DOI: 10.1007/s10620-018-5015-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Accepted: 03/07/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND Trypanosoma cruzi (T. cruzi) infects millions of Latin Americans each year and can induce chagasic megacolon. Little is known about how serotonin (5-HT) modulates this condition. Aim We investigated whether 5-HT synthesis alters T. cruzi infection in the colon. MATERIALS AND METHODS Forty-eight paraffin-embedded samples from normal colon and chagasic megacolon were histopathologically analyzed (173/2009). Tryptophan hydroxylase 1 (Tph1) knockout (KO) mice and c-KitW-sh mice underwent T. cruzi infection together with their wild-type counterparts. Also, mice underwent different drug treatments (16.1.1064.60.3). RESULTS In both humans and experimental mouse models, the serotonergic system was activated by T. cruzi infection (p < 0.05). While treating Tph1KO mice with 5-HT did not significantly increase parasitemia in the colon (p > 0.05), rescuing its synthesis promoted trypanosomiasis (p < 0.01). T. cruzi-related 5-HT release (p < 0.05) seemed not only to increase inflammatory signaling, but also to enlarge the pericryptal macrophage and mast cell populations (p < 0.01). Knocking out mast cells reduced trypanosomiasis (p < 0.01), although it did not further alter the neuroendocrine cell number and Tph1 expression (p > 0.05). Further experimentation revealed that pharmacologically inhibiting mast cell activity reduced colonic infection (p < 0.01). A similar finding was achieved when 5-HT synthesis was blocked in c-KitW-sh mice (p > 0.05). However, inhibiting mast cell activity in Tph1KO mice increased colonic trypanosomiasis (p < 0.01). CONCLUSION We show that mast cells may modulate the T. cruzi-related increase of 5-HT synthesis in the intestinal colon.
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Affiliation(s)
- Vinicius Kannen
- Department of Toxicology, Bromatology, and Clinical Analysis, University of Sao Paulo, Ribeirão Preto, 14040-903, Brazil.
- Department of Pathology, University of Sao Paulo, Ribeirão Preto, Brazil.
| | - Juliana Y Sakita
- Department of Toxicology, Bromatology, and Clinical Analysis, University of Sao Paulo, Ribeirão Preto, 14040-903, Brazil
| | - Zumira A Carneiro
- Department of Toxicology, Bromatology, and Clinical Analysis, University of Sao Paulo, Ribeirão Preto, 14040-903, Brazil
| | - Michael Bader
- Max Delbrück Center for Molecular Medicine, Berlin, Germany
- Charité University Medicine Berlin, Berlin, Germany
- Berlin Institute of Health (BIH), Berlin, Germany
| | - Natalia Alenina
- Max Delbrück Center for Molecular Medicine, Berlin, Germany
- Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg, Russia
| | - Regina R Teixeira
- Department of Toxicology, Bromatology, and Clinical Analysis, University of Sao Paulo, Ribeirão Preto, 14040-903, Brazil
| | | | | | - Bianca Gasparotto
- Department of Toxicology, Bromatology, and Clinical Analysis, University of Sao Paulo, Ribeirão Preto, 14040-903, Brazil
| | - Daniela C Sartori
- Department of Biochemistry and Immunology, University of São Paulo, Ribeirão Preto, Brazil
| | | | - João S Silva
- Department of Biochemistry and Immunology, University of São Paulo, Ribeirão Preto, Brazil
| | - Marcus V Andrade
- Department of Clinical Medicine, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Wilson A Silva
- Department of Genetics, University of Sao Paulo, Ribeirão Preto, Brazil
| | - Sergio A Uyemura
- Department of Toxicology, Bromatology, and Clinical Analysis, University of Sao Paulo, Ribeirão Preto, 14040-903, Brazil
| | - Sérgio B Garcia
- Department of Pathology, University of Sao Paulo, Ribeirão Preto, Brazil
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31
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Sil S, Ghosh T. Etoricoxib inhibits peripheral inflammation and alters immune responses in intracerebroventricular colchicine injected rats. J Neuroimmunol 2018; 317:15-23. [PMID: 29501081 DOI: 10.1016/j.jneuroim.2018.01.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 01/07/2018] [Accepted: 01/24/2018] [Indexed: 10/18/2022]
Abstract
The present study was designed to investigate the effectiveness of etoricoxib induced inhibition of neuroinflammation by studying the peripheral inflammatory markers and select immune parameters in intracerebroventricular colchicine injected rats (ICIR). Results showed time dependent upregulation of the inflammatory markers in the serum along with alterations of peripheral immune parameters in ICIR and dose-dependent recovery was observed upon administration of etoricoxib to ICIR; most of these effects were greater with the longer duration of study. The present study indicates that colchicine induced neuroinflammation may cause systemic inflammation and alteration of immune responses which are mediated by increased cox- 2 activity.
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Affiliation(s)
- Susmita Sil
- Department of Physiology, University College of Science and Technology, University of Calcutta, Kolkata, India
| | - Tusharkanti Ghosh
- Department of Physiology, University College of Science and Technology, University of Calcutta, Kolkata, India.
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32
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Kumar R, Gupta YK, Singh S. Anti-inflammatory and anti-granuloma activity of Berberis aristata DC. in experimental models of inflammation. Indian J Pharmacol 2017; 48:155-61. [PMID: 27114638 PMCID: PMC4825432 DOI: 10.4103/0253-7613.178831] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Objective: Berberis aristata (Berberidaceae) is an important medicinal plant used in traditional system of medicine for the treatment of rheumatoid arthritis and other inflammatory disorders. The aim of the present study is to scientifically validate the traditional use of BA in the treatment of inflammatory disorders. Materials and Methods: Anti-inflammatory and anti-granuloma activity of BA hydroalcoholic extract (BAHE) were evaluated in experimental models, viz., carrageenan-induced paw edema, cotton pellet-induced granuloma formation, and complete Freund's adjuvant-induced stimulation of peritoneal macrophages in rats. Expression of inflammatory mediators, viz., tumor necrosis factor-alpha (TNF-α), interleukin-1β (IL-1β), IL-6, IL-10, TNF-R1, and cyclooxygenase-2 (COX-2) was carried out in serum and peritoneal macrophages to derive the plausible mechanism of BAHE in activated peritoneal macrophages. Results: Pretreatment with BAHE produced a dose-dependent reduction (P < 0.01) in carrageenan-induced paw edema and cotton pellet-induced granuloma model. BAHE treatment produced significant (P < 0.01) reduction in serum inflammatory cytokine levels as compared to control. Protein expression of pro-inflammatory markers, IL-1β, IL-6, TNF-R1, and COX-2, was found to be reduced in stimulated macrophages whereas anti-inflammatory cytokine, IL-10, was upregulated in peritoneal macrophages. Conclusion: The result of the present study thus demonstrates the anti-inflammatory and anti-granuloma activity of BAHE which may be attributed to its inhibitory activity on macrophage-derived cytokine and mediators.
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Affiliation(s)
- Rohit Kumar
- Department of Pharmacology, All India Institute of Medical Sciences, New Delhi, India
| | - Yogendra Kumar Gupta
- Department of Pharmacology, All India Institute of Medical Sciences, New Delhi, India
| | - Surender Singh
- Department of Pharmacology, All India Institute of Medical Sciences, New Delhi, India
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Pharmacological Properties of Riparin IV in Models of Pain and Inflammation. Molecules 2016; 21:molecules21121757. [PMID: 28009853 PMCID: PMC6274570 DOI: 10.3390/molecules21121757] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 12/07/2016] [Accepted: 12/17/2016] [Indexed: 01/22/2023] Open
Abstract
Riparins, natural alkaloids of the alkamide group, can be synthesized by simple methods, enhancing their potential application in pharmaceutical development. Here, the pharmacological properties of riparins were investigated in in vitro and in vivo assays of pain and inflammation in Swiss mice. Inflammatory mediators were measured by radioimmunoassay and Real-Time PCR. Riparins I, II, III and IV (1.56-100 mg/kg; ip) produced dose-related antinociceptive effects in the formalin test, exhibiting ED50 values of 22.93, 114.2, 31.05 and 6.63 mg/kg, respectively. Taking the greater potency as steering parameter, riparin IV was further investigated. Riparin IV did not produce antinociceptive effect on the tail flick, suggesting that its antinociception is not a centrally-mediated action. In fact, riparin IV (1.56-25 mg/kg) produced dose-related antinociceptive and antiedematogenic effects on the complete Freund's adjuvant (CFA)-induced paw inflammation in mice. During CFA-induced inflammation, riparin IV did not modulate either the production of cytokines, TNF-α and IL-10, or COX-2 mRNA expression. On the other hand, riparin IV decreased the PGE₂ levels in the inflamed paw. In in vitro assays, riparin IV did not exhibit suppressive activities in activated macrophages. These results indicate, for the first time, that riparin IV induces antinociceptive and anti-inflammatory effects, possibly through the inhibition of prostanoid production.
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Al Alam N, Kreydiyyeh SI. FTY720P inhibits hepatic Na(+)-K(+) ATPase via S1PR2 and PGE2. Biochem Cell Biol 2016; 94:371-7. [PMID: 27501354 DOI: 10.1139/bcb-2016-0025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Sphingosine-1-phosphate (S1P) was found previously to inhibit Na(+)-K(+) ATPase in HepG2 cells. Whether fingolimod (FTY720), a S1P receptor (S1PR) agonist, similarly inhibits the ATPase is a question that needs to be addressed. The aim of this work was to study the effect of FTY720P, the active form of the drug, on the activity of Na(+)-K(+) ATPase in HepG2 cells and determine its mechanism of action. The activity of the ATPase was assayed by measuring the amount of inorganic phosphate liberated in the presence and the absence of ouabain. FTY720-P (7.5 nmol/L, 15 min) significantly reduced the activity of the ATPase. This effect disappeared completely in the presence of JTE-013, which is a specific blocker of sphingosine-1-phosphate receptor 2 (S1PR2), as well as in the presence of calphostin and indomethacin, which are inhibitors of protein kinase C (PKC) and COX-2, respectively. The effect of FTY720P was mimicked by prostaglandin E2 (PGE2) and PMA, but abrogated by NF-κB inhibition. When NF-κB was inhibited, the effect of exogenous PGE2 still appeared, but that of PMA did not manifest, suggesting that NF-κB is upstream of PGE2 and downstream of PKC. It was concluded that FTY720P activates via S1PR2, PKC, and NF-κB. The latter induces PGE2 generation and inhibits Na(+)-K(+) ATPase.
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Affiliation(s)
- Nadine Al Alam
- Department of Biology, Faculty of Arts & Sciences, American University of Beirut, Beirut, 11-0236, Lebanon.,Department of Biology, Faculty of Arts & Sciences, American University of Beirut, Beirut, 11-0236, Lebanon
| | - Sawsan Ibrahim Kreydiyyeh
- Department of Biology, Faculty of Arts & Sciences, American University of Beirut, Beirut, 11-0236, Lebanon.,Department of Biology, Faculty of Arts & Sciences, American University of Beirut, Beirut, 11-0236, Lebanon
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Absence of CD66a expression is associated with high microvessel density and high histologic grade in hepatocellular carcinoma. Kaohsiung J Med Sci 2016; 32:306-12. [PMID: 27377843 DOI: 10.1016/j.kjms.2016.05.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 05/06/2016] [Accepted: 05/09/2016] [Indexed: 11/22/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is a primary malignancy of the liver. Patients with HCC usually have poor prognosis and high mortality. It has been shown that carcinoembryonic antigen-related cell adhesion molecule 1 (CD66a) regulates cell signaling, proliferation, and tumor growth. The aim of this study is to analyze the expression and possible role of CD66a in HCC. Immunohistochemical staining of CD66a was performed on 86 HCC cases, and microvessel density was evaluated by CD34 immunostaining. The results were further correlated with clinicopathological parameters. For 47 of 86 HCC cases, the CD66a expression showed diffuse membrane or cytoplasmic staining. The other 39 HCC cases revealed loss of CD66a expression. Loss of CD66a expression was statistically significantly associated with large tumor size (p=0.016), fatty change (p=0.039), patients with transcatheter arterial embolization (p=0.007), and high microvessel density (p=0.036). CD34 expression had no significant association with tumor size, virus infection, histological grade, and capsular invasion. The diffuse and cytoplasmic expression of CD66a may involve the early stage of the HCC, and the loss of CD66a expression indicates tumor progression.
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Hong JY, Bae WJ, Yi JK, Kim GT, Kim EC. Anti-inflammatory and anti-osteoclastogenic effects of zinc finger protein A20 overexpression in human periodontal ligament cells. J Periodontal Res 2015; 51:529-39. [PMID: 26548452 DOI: 10.1111/jre.12332] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/10/2015] [Indexed: 01/21/2023]
Abstract
BACKGROUND AND OBJECTIVE Although overexpression of the nuclear factor κB inhibitory and ubiquitin-editing enzyme A20 is thought to be involved in the pathogenesis of inflammatory diseases, its function in periodontal disease remains unknown. The aims of the present study were to evaluate A20 expression in patients with periodontitis and to study the effects of A20 overexpression, using a recombinant adenovirus encoding A20 (Ad-A20), on the inflammatory response and on osteoclastic differentiation in lipopolysaccharide (LPS)- and nicotine-stimulated human periodontal ligament cells (hPDLCs). MATERIAL AND METHODS The concentration of prostaglandin E2 was measured by radioimmunoassay. Reverse transcription-polymerase chain reactions and western blot analyses were used to measure mRNA and protein levels, respectively. Osteoclastic differentiation was assessed in mouse bone marrow-derived macrophages using conditioned medium from LPS- and nicotine-treated hPDLCs. RESULTS A20 was upregulated in the gingival tissues and neutrophils from patients with periodontitis and in LPS- and nicotine-exposed hPDLCs. Pretreatment with A20 overexpression by Ad-A20 markedly attenuated LPS- and nicotine-induced production of prostaglandin E2 , as well as expression of cyclooxygenase-2 and proinflammatory cytokines. Moreover, A20 overexpression inhibited the number and size of tartrate-resistant acid phosphatase-stained osteoclasts, and downregulated osteoclast-specific gene expression. LPS- and nicotine-induced p38 phosphorylation and nuclear factor κB activation were blocked by Ad-A20. Ad-A20 inhibited the effects of nicotine and LPS on the activation of pan-protein kinase C, Akt, GSK-3β and protein kinase Cα. CONCLUSIONS This study is the first to demonstrate that A20 overexpression has anti-inflammatory effects and blocks osteoclastic differentiation in a nicotine- and LPS-stimulated hPDLC model. Thus, A20 overexpression may be a potential therapeutic target in inflammatory bone loss diseases, such as periodontal disease.
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Affiliation(s)
- J-Y Hong
- Department of Periodontology, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - W-J Bae
- Department of Oral and Maxillofacial Pathology & Research Center for Tooth and Periodontal Tissue Regeneration (MRC), School of Dentistry, Kyung Hee University, Seoul, Korea
| | - J-K Yi
- Department of Conservative Dentistry, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - G-T Kim
- Department of Oral and Maxillofacial Radiology, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - E-C Kim
- Department of Oral and Maxillofacial Pathology & Research Center for Tooth and Periodontal Tissue Regeneration (MRC), School of Dentistry, Kyung Hee University, Seoul, Korea
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Naringenin Suppresses Neuroinflammatory Responses Through Inducing Suppressor of Cytokine Signaling 3 Expression. Mol Neurobiol 2015; 53:1080-1091. [PMID: 25579382 DOI: 10.1007/s12035-014-9042-9] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 11/30/2014] [Indexed: 01/16/2023]
Abstract
Accumulating evidence suggests that neuroinflammation is closely associated with the pathogenesis of neurodegenerative disorders such as Parkinson's disease and Alzheimer's disease. The hallmark of neuroinflammation is considered to be microglial activation in the central nervous system (CNS). Activated microglia release pro-inflammatory cytokines which cause neuroinflammation and progressive neuronal cell death. Therefore, inhibition of microglial activation is considered an important strategy in the development of neuroprotective strategy. Naringenin, a flavonoid found in citrus fruits and tomatoes, has been reported to have anti-oxidant, anti-cancer, and anti-inflammatory properties. However, the mechanism of its beneficial anti-inflammatory effects in the CNS is poorly understood. In this study, we demonstrated that naringenin inhibites the release of nitric oxide (NO), the expression of inducible nitric oxide synthase (iNOS), and cyclooxygenase-2 (COX-2), as well as pro-inflammatory cytokines in microglial cells. Treatment of naringenin also induced suppressors of cytokine signaling (SOCS)-3 expression in microglia. The SOCS-3 expression and anti-inflammatory effects of naringenin were found to be regulated by adenosine monophosphate-activated protein kinase α (AMPKα) and protein kinase C δ (PKCδ). Besides, naringenin exerted protective property against neurotoxicity caused by LPS-induced microglial activation. Our findings suggest that naringenin-inhibited iNOS and COX-2 expression is mediated by SOCS-3 activation through AMPKα and PKCδ signaling pathways. In a mouse model, naringenin also showed significant protective effects on microglial activation and improved motor coordination function as well. Therefore, naringenin that involves in anti-neuroinflammatory responses and neuroprotection might be a potential agent for treatment of inflammation-associated disorders.
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Sun Y, Chauhan A, Sukumaran P, Sharma J, Singh BB, Mishra BB. Inhibition of store-operated calcium entry in microglia by helminth factors: implications for immune suppression in neurocysticercosis. J Neuroinflammation 2014; 11:210. [PMID: 25539735 PMCID: PMC4302716 DOI: 10.1186/s12974-014-0210-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 11/29/2014] [Indexed: 12/13/2022] Open
Abstract
Background Neurocysticercosis (NCC) is a disease of the central nervous system (CNS) caused by the cestode Taenia solium. The infection exhibits a long asymptomatic phase, typically lasting 3 to 5 years, before the onset of the symptomatic phase. The severity of the symptoms is thought to be associated with the intensity of the inflammatory response elicited by the degenerating parasite. In contrast, the asymptomatic phase shows an absence of brain inflammation, which is presumably due to immunosuppressive effects of the live parasites. However, the host factors and/or pathways involved in inhibiting inflammation remain largely unknown. Recently, using an animal model of NCC in which mice were intracranially inoculated with a related helminth parasite, Mesocestoides corti, we reported that Toll-like receptor (TLR)-associated signaling contributes to the development of the inflammatory response. As microglia shape the initial innate immune response in the CNS, we hypothesized that the negative regulation of a TLR-induced inflammatory pathway in microglia may be a novel helminth-associated immunosuppressive mechanism in NCC. Methods and results Here we report that helminth soluble factors (HSFs) from Mesocestoides corti inhibited TLR ligation-induced production of inflammatory cytokines in primary microglia. This was correlated with an inhibition of TLR-initiated upregulation of both phosphorylation and acetylation of the nuclear factor κB (NF-κB) p65 subunit, as well as phosphorylation of JNK and ERK1/2. As Ca2+ influx due to store-operated Ca2+ entry (SOCE) has been implicated in induction of downstream signaling, we tested the inhibitory effect of HSFs on agonist-induced Ca2+ influx and specific Ca2+ channel activation. We discovered that HSFs abolished the lipopolysaccharide (LPS)- or thapsigargin (Tg)-induced increase in intracellular Ca2+ accumulation by blocking the ER store release and SOCE. Moreover, electrophysiological recordings demonstrated HSF-mediated inhibition of LPS- or Tg-induced SOCE currents through both TRPC1 and ORAI1 Ca2+ channels on plasma membrane. This was correlated with a decrease in the TRPC1-STIM1 and ORAI1-STIM1 clustering at the plasma membrane that is essential for sustained Ca2+ entry through these channels. Conclusion Inhibition of TRPC1 and ORAI1 Ca2+ channel-mediated activation of NF-κB and MAPK pathways in microglia is likely a novel helminth-induced immunosuppressive mechanism that controls initiation of inflammatory response in the CNS.
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Duan Y, Chen F, Zhang A, Zhu B, Sun J, Xie Q, Chen Z. Aspirin inhibits lipopolysaccharide-induced COX-2 expression and PGE2 production in porcine alveolar macrophages by modulating protein kinase C and protein tyrosine phosphatase activity. BMB Rep 2014; 47:45-50. [PMID: 24209633 PMCID: PMC4163845 DOI: 10.5483/bmbrep.2014.47.1.089] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 05/06/2013] [Accepted: 06/03/2013] [Indexed: 11/20/2022] Open
Abstract
Aspirin has been demonstrated to be effective in inhibiting COX-2 and PGE(2) in Alveolar macrophages (AMs). However, the mechanisms have not been fully understood. In the present study, we found that pretreatment with aspirin inhibited LPS-induced COX-2 and PGE(2) upregulation, IκBα degradation, NFκB activation and the increase of PKC activity, but elevated LPS-induced the decrease of PTP activity. The PKC inhibitor calphostin C dramatically reduced the COX-2 mRNA and PGE(2) levels, but the PTP inhibitor peroxovanadium (POV) significantly increased the COX-2 mRNA and PGE(2) levels. Furthermore, the PTP inhibitor mitigated the inhibitory effect of aspirin on COX-2 and PGE(2) upregulation and NF-κB activation, whereas the PKC inhibitor enhanced the inhibitory effects of aspirin on the production of COX-2 and PGE(2). Our data indicate a novel mechanism by which aspirin acts as a potent anti-inflammatory agent in alveolus macrophages and ALI.
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Affiliation(s)
- Yuzhong Duan
- Cancer Institute of PLA, Xinqiao Hospital, Third Military Medical University, Chongqing 40037, China
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Musumeci G, Coleman R, Imbesi R, Magro G, Parenti R, Szychlinska MA, Scuderi R, Cinà CS, Castorina S, Castrogiovanni P. ADAM-10 could mediate cleavage of N-cadherin promoting apoptosis in human atherosclerotic lesions leading to vulnerable plaque: a morphological and immunohistochemical study. Acta Histochem 2014; 116:1148-58. [PMID: 24985126 DOI: 10.1016/j.acthis.2014.06.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 06/01/2014] [Accepted: 06/02/2014] [Indexed: 01/03/2023]
Abstract
Atherosclerosis remains a major cause of mortality. Whereas the histopathological progression of atherosclerotic lesions is well documented, much less is known about the development of unstable or vulnerable plaque, which can rupture leading to thrombus, luminal occlusion and infarct. Apoptosis in the fibrous cap, which is rich in vascular smooth muscle cells (VSMCs) and macrophages, and its subsequent weakening or erosion seems to be an important regulator of plaque stability. The aim of our study was to improve our knowledge on the biological mechanisms that cause plaque instability in order to develop new therapies to maintain atherosclerotic plaque stability and avoid its rupture. In our study, we collected surgical specimens from atherosclerotic plaques in the right or left internal carotid artery of 62 patients with evident clinical symptoms. Histopathology and histochemistry were performed on wax-embedded sections. Immunohistochemical localization of caspase-3, N-cadherin and ADAM-10 was undertaken in order to highlight links between apoptosis, as expressed by caspase-3 immunostaining, and possible roles of N-cadherin, a cell-cell junction protein in VSMCs and macrophages that provides a pro-survival signal reducing apoptosis, and ADAM-10, a "disintegrin and metalloproteases" that is able to cleave N-cadherin in glioblastomas. Our results showed that when apoptosis, expressed by caspase-3 immunostaining, increased in the fibrous cap, rich in VSMCs and macrophages, the expression of N-cadherin decreased. The decreased N-cadherin expression, in turn, was linked to increased ADAM-10 expression. This study shows that apoptotic events are probably involved in the vulnerability of atherosclerotic plaque.
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Jin LY, Li CF, Zhu GF, Wu CT, Wang J, Yan SF. Effect of siRNA against NF-κB on sepsis‑induced acute lung injury in a mouse model. Mol Med Rep 2014; 10:631-7. [PMID: 24913772 PMCID: PMC4094764 DOI: 10.3892/mmr.2014.2299] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Accepted: 03/27/2014] [Indexed: 12/19/2022] Open
Abstract
The aim of the present study was to explore the protective effect of small interfering RNA (siRNA) against nuclear factor κB (NF-κB) p65 on sepsis-induced acute lung injury (ALI) in mice. In total, 70 male Kunming mice were randomly divided into a healthy control group, a sepsis group, a specific interfering group and a scrambled control group (Sc), and the latter three groups were divided into post-operational 6 and 12 h subgroups, each of which consisted of 10 mice. The mice were administered with NF-κB siRNA, scrambled siRNA and normal saline via tail vein injection. Following 1 h, a mouse model of septic ALI was produced by cecal ligation and puncture (CLP) in the two siRNA groups and the sepsis control group. At 6 and 12 h post-operation, the experimental mice were sacrificed and the lung tissue samples were collected. Histopathological changes, wet/dry ratio of lung weight, NF-κB protein and NF-κB p65 mRNA levels, matrix metalloproteinase-9 (MMP-9) mRNA and protein activity were detected. Compared with the sepsis group and the Sc at the corresponding time, the expression levels of NF-κB p65 mRNA, the lung injury of experimental mice, the wet/dry ratio and the levels of MMP-9 mRNA and protein activity decreased, and significant differences were observed at 6 h post-operation (P<0.05). RNA interference against NF-κB p65 was able to decrease the expression of NF-κB and further inhibit the early phasic excessive inflammatory reaction in sepsis, which may alleviate ALI.
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Affiliation(s)
- Li-Yan Jin
- Department of Infectious Disease, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, P.R. China
| | - Cong-Feng Li
- Department of Respiratory and Critical Care Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, P.R. China
| | - Guang-Fa Zhu
- Department of Respiratory and Critical Care Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, P.R. China
| | - Chun-Ting Wu
- Department of Respiratory and Critical Care Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, P.R. China
| | - Jun Wang
- Department of Respiratory and Critical Care Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, P.R. China
| | - Shu-Feng Yan
- Department of Respiratory and Critical Care Medicine, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, P.R. China
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Duarte S, Kato H, Kuriyama N, Suko K, Ishikawa TO, Busuttil RW, Herschman HR, Coito AJ. Hepatic ischemia and reperfusion injury in the absence of myeloid cell-derived COX-2 in mice. PLoS One 2014; 9:e96913. [PMID: 24819536 PMCID: PMC4018446 DOI: 10.1371/journal.pone.0096913] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Accepted: 04/12/2014] [Indexed: 12/18/2022] Open
Abstract
Cyclooxygenase-2 (COX-2) is a mediator of hepatic ischemia and reperfusion injury (IRI). While both global COX-2 deletion and pharmacologic COX-2 inhibition ameliorate liver IRI, the clinical use of COX-2 inhibitors has been linked to increased risks of heart attack and stroke. Therefore, a better understanding of the role of COX-2 in different cell types may lead to improved therapeutic strategies for hepatic IRI. Macrophages of myeloid origin are currently considered to be important sources of the COX-2 in damaged livers. Here, we used a Cox-2flox conditional knockout mouse (COX-2−M/−M) to examine the function of COX-2 expression in myeloid cells during liver IRI. COX-2−M/−M mice and their WT control littermates were subjected to partial liver ischemia followed by reperfusion. COX-2−M/−M macrophages did not express COX-2 upon lipopolysaccharide stimulation and COX-2−M/−M livers showed reduced levels of COX-2 protein post-IRI. Nevertheless, selective deletion of myeloid cell-derived COX-2 failed to ameliorate liver IRI; serum transaminases and histology were comparable in both COX-2−M/−M and WT mice. COX-2−M/−M livers, like WT livers, developed extensive necrosis, vascular congestion, leukocyte infiltration and matrix metalloproteinase-9 (MMP-9) expression post-reperfusion. In addition, myeloid COX-2 deletion led to a transient increase in IL-6 levels after hepatic reperfusion, when compared to controls. Administration of celecoxib, a selective COX-2 inhibitor, resulted in significantly improved liver function and histology in both COX-2−M/−M and WT mice post-reperfusion, providing evidence that COX-2-mediated liver IRI is caused by COX-2 derived from a source(s) other than myeloid cells. In conclusion, these results support the view that myeloid COX-2, including myeloid-macrophage COX-2, is not responsible for the hepatic IRI phenotype.
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Affiliation(s)
- Sergio Duarte
- Department of Surgery, The Dumont-UCLA Transplant Center, David Geffen School of Medicine at UCLA, Los Angeles, California, United States
| | - Hiroyuki Kato
- Department of Surgery, The Dumont-UCLA Transplant Center, David Geffen School of Medicine at UCLA, Los Angeles, California, United States
| | - Naohisa Kuriyama
- Present address: Department of Hepatobiliary Pancreatic Surgery, Mie University Graduate School of Medicine, Mie, Japan
| | - Kathryn Suko
- Department of Surgery, The Dumont-UCLA Transplant Center, David Geffen School of Medicine at UCLA, Los Angeles, California, United States
| | - Tomo-o Ishikawa
- Present address: Mouse Group, Genomics Business Department, Transgenic Inc., Kobe, Japan
| | - Ronald W. Busuttil
- Department of Surgery, The Dumont-UCLA Transplant Center, David Geffen School of Medicine at UCLA, Los Angeles, California, United States
| | - Harvey R. Herschman
- Department of Molecular and Medical Pharmacology, Jonsson Comprehensive Cancer Center, David Geffen School of Medicine at UCLA, Los Angeles, California, United States
| | - Ana J. Coito
- Department of Surgery, The Dumont-UCLA Transplant Center, David Geffen School of Medicine at UCLA, Los Angeles, California, United States
- * E-mail:
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An Asp49 phospholipase A2 from snake venom induces cyclooxygenase-2 expression and prostaglandin E2 production via activation of NF-κB, p38MAPK, and PKC in macrophages. Mediators Inflamm 2014; 2014:105879. [PMID: 24808633 PMCID: PMC3997854 DOI: 10.1155/2014/105879] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Accepted: 01/16/2014] [Indexed: 02/08/2023] Open
Abstract
Phospholipases A2 (PLA2) are key enzymes for production of lipid mediators. We previously demonstrated that a snake venom sPLA2 named MT-III leads to prostaglandin (PG)E2 biosynthesis in macrophages by inducing the expression of cyclooxygenase-2 (COX-2). Herein, we explored the molecular mechanisms and signaling pathways leading to these MT-III-induced effects. Results demonstrated that MT-III induced activation of the transcription factor NF-κB in isolated macrophages. By using NF-κB selective inhibitors, the involvement of this factor in MT-III-induced COX-2 expression and PGE2 production was demonstrated. Moreover, MT-III-induced COX-2 protein expression and PGE2 release were attenuated by pretreatment of macrophages with SB202190, and Ly294002, and H-7-dihydro compounds, indicating the involvement of p38MAPK, PI3K, and PKC pathways, respectively. Consistent with this, MT-III triggered early phosphorylation of p38MAPK, PI3K, and PKC. Furthermore, SB202190, H-7-dihydro, but not Ly294002 treatment, abrogated activation of NF-κB induced by MT-III. Altogether, these results show for the first time that the induction of COX-2 protein expression and PGE2 release, which occur via NF-κB activation induced by the sPLA2-MT-III in macrophages, are modulated by p38MAPK and PKC, but not by PI3K signaling proteins.
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Prokaryotic expression and functional analysis of the Mb1514 gene in Mycobacterium bovis. Mol Cell Biochem 2013; 385:43-52. [PMID: 24141863 DOI: 10.1007/s11010-013-1813-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2013] [Accepted: 09/13/2013] [Indexed: 12/11/2022]
Abstract
The ability of mycobacteria to grow and invade target tissues is the key component in the process of Mycobacterium bovis infection. Therefore, analysis of the proteins responsible for cell invasion will assist clinicians in combating bovine tuberculosis. The Mb1514 gene of M. bovis encodes a hypothetical invasion protein (designated here as MbINV protein), whose function has not yet been directly identified. In this study, the Mb1514 gene from M. bovis was cloned, and expressed in E. coli. The recombinant MbINV protein (a single band of approximately 28 kDa) was purified for biological analysis. Our data demonstrated that recombinant MbINV protein significantly inhibited the viability of RAW264.7 macrophages in a dose-dependent manner (P < 0.05), and induced cell necrosis, indicating that the protein is toxic. MbINV protein infection significantly enhanced the mRNA expression levels of TNF-α, IL-1β, and NOS2 (P < 0.01), suggesting that MbINV protein may be one of the virulence factors which directly interact with macrophages and modulate the host immune response to M. bovis. An invasion inhibition assay showed that MbINV-inhibited M. bovis invasion of RAW264.7 cells in a concentration-dependant manner, demonstrating it is an invasion protein.
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Vitturi DA, Chen CS, Woodcock SR, Salvatore SR, Bonacci G, Koenitzer JR, Stewart NA, Wakabayashi N, Kensler TW, Freeman BA, Schopfer FJ. Modulation of nitro-fatty acid signaling: prostaglandin reductase-1 is a nitroalkene reductase. J Biol Chem 2013; 288:25626-25637. [PMID: 23878198 DOI: 10.1074/jbc.m113.486282] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Inflammation, characterized by the activation of both resident and infiltrated immune cells, is accompanied by increased production of oxidizing and nitrating species. Nitrogen dioxide, the proximal nitrating species formed under these conditions, reacts with unsaturated fatty acids to yield nitroalkene derivatives. These electrophilic products modulate protein function via post-translational modification of susceptible nucleophilic amino acids. Nitroalkenes react with Keap1 to instigate Nrf2 signaling, activate heat shock response gene expression, and inhibit NF-κB-mediated signaling, inducing net anti-inflammatory and tissue-protective metabolic responses. We report the purification and characterization of a NADPH-dependent liver enzyme that reduces the nitroalkene moiety of nitro-oleic acid, yielding the inactive product nitro-stearic acid. Prostaglandin reductase-1 (PtGR-1) was identified as a nitroalkene reductase by protein purification and proteomic studies. Kinetic measurements, inhibition studies, immunological and molecular biology approaches as well as clinical analyses confirmed this identification. Overexpression of PtGR-1 in HEK293T cells promoted nitroalkene metabolism to inactive nitroalkanes, an effect that abrogated the Nrf2-dependent induction of heme oxygenase-1 expression by nitro-oleic acid. These results situate PtGR-1 as a critical modulator of both the steady state levels and signaling activities of fatty acid nitroalkenes in vivo.
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Affiliation(s)
| | - Chen-Shan Chen
- From the Department of Pharmacology and Chemical Biology
| | | | | | | | | | - Nicolas A Stewart
- Biomedical Mass Spectrometry Center. University of Pittsburgh, Pittsburgh, Pennsylvania 15261
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Xu X, Huang Q, Mao Y, Cui Z, Li Y, Huang Y, Rajput IR, Yu D, Li W. Immunomodulatory effects of Bacillus subtilis (natto) B4 spores on murine macrophages. Microbiol Immunol 2013; 56:817-24. [PMID: 22957751 DOI: 10.1111/j.1348-0421.2012.00508.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
To investigate the immunomodulatory effects of Bacillus subtilis (B. subtilis) (natto) B4 spores on murine macrophage, RAW 264.7 cells were cultured alone or with B subtilis (natto) B4 spores at 37°C for 12 hrs, then both cells and culture supernatants were collected for analyses. Exposure of RAW 264.7 cells to B. subtilis (natto) B4 spores had no significant effects on macrophage viability and amounts of extracellular lactate dehydrogenase (LDH). However, it remarkably increased the activities of acid phosphatase (ACP), lactate dehydrogenase (LDH) and inducible nitric oxide synthase (iNOS) in cells and the amounts of nitric oxide (NO) and cytokines (tumor necrosis factor-alpha, interferon-gamma, interleukin [IL]-1 beta, IL-6, IL-12, IL-10 and macrophage inflammatory protein-2) in culture supernatants. These results demonstrate that B. subtilis (natto) B4 spores are harmless to murine macrophages and can stimulate their activation through up-regulation of ACP and LDH activities and enhance their immune function by increasing iNOS activity and stimulating NO and cytokine production. The above findings suggest that B. subtilis (natto) B4 spores have immunomodulatory effects on macrophages.
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Affiliation(s)
- Xin Xu
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science, Zhejiang University, Hangzhou, China
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Galeotti N, Ghelardini C. Inhibition of the PKCγ-ε pathway relieves from meningeal nociception in an animal model: an innovative perspective for migraine therapy? Neurotherapeutics 2013; 10:329-39. [PMID: 23055050 PMCID: PMC3625380 DOI: 10.1007/s13311-012-0151-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
There is convincing evidence that nitric oxide (NO) may be a causative factor in the pathogenesis of migraine. We investigated the consequences of NO donors' administration on meningeal processes related to the development of migraine pain in an animal model of meningeal nociception. The administration in mice of the NO donors nitroglycerin (GTN) and sodium nitroprusside (SNP) produced a delayed meningeal upregulation of interleukin-1ß and inducible NO synthase. A thermal allodynia and hyperalgesia devoid of side effects was produced 1 to 4 h after administration. To clarify the cellular pathways modulated by GTN and SNP, we examined the expression of cellular factors involved in pain modulation, such as protein kinase C (PKC) and its downstream effectors. Western blotting experiments showed an upregulation and increased phosphorylation of PKCγ and PKCε within dura mater after NO donors' administration. A dramatic PKC-dependent increase of the phosphorylation of cyclic AMP response element binding protein (CREB) and signal transducer and activator of transcription (STAT)-1 was observed, along with an activation of the nuclear factor-κB (NF-κB) pathway, as reflected by a reduction of the inhibitory protein-κ-Bα (IκBα). Furthermore, the PKC blocker, Calphostin C, prevented the GTN and SNP-induced pain hypersensitivity. These results suggest the relevance of the PKC-mediated pathway in the induction of meningeal nociception and might help clarify the etiopathology of migraines. We can suggest PKC as a new target for migraine pain.
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Affiliation(s)
- Nicoletta Galeotti
- Department of Preclinical and Clinical Pharmacology, Viale G. Pieraccini 6, Florence, 50139, Italy.
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Huang Q, Xu X, Mao YL, Huang Y, Rajput IR, Li WF. Effects ofBacillus subtilis B10 spores on viability and biological functions of murine macrophages. Anim Sci J 2012; 84:247-52. [DOI: 10.1111/j.1740-0929.2012.01064.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2012] [Accepted: 06/11/2012] [Indexed: 01/01/2023]
Affiliation(s)
- Qin Huang
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science; Zhejiang University; Hangzhou; China
| | - Xin Xu
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science; Zhejiang University; Hangzhou; China
| | - Yu-long Mao
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science; Zhejiang University; Hangzhou; China
| | - Yi Huang
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science; Zhejiang University; Hangzhou; China
| | - Imran R. Rajput
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science; Zhejiang University; Hangzhou; China
| | - Wei-fen Li
- Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Institute of Feed Science, College of Animal Science; Zhejiang University; Hangzhou; China
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Human macrophage response to L. (Viannia) panamensis: microarray evidence for an early inflammatory response. PLoS Negl Trop Dis 2012; 6:e1866. [PMID: 23145196 PMCID: PMC3493378 DOI: 10.1371/journal.pntd.0001866] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2011] [Accepted: 09/01/2012] [Indexed: 11/19/2022] Open
Abstract
Background Previous findings indicate that susceptibility to Leishmania (Viannia) panamensis infection of monocyte-derived macrophages from patients and asymptomatically infected individuals were associated with the adaptive immune response and clinical outcome. Methodology/Principal Findings To understand the basis for this difference we examined differential gene expression of human monocyte-derived macrophages following exposure to L. (V.) panamensis. Gene activation profiles were determined using macrophages from healthy volunteers cultured with or without stationary phase promastigotes of L. (V.) panamensis. Significant changes in expression (>1.5-fold change; p<0.05; up- or down-regulated) were identified at 0.5, 4 and 24 hours. mRNA abundance profiles varied over time, with the highest level of activation occurring at earlier time points (0.5 and 4 hrs). In contrast to observations for other Leishmania species, most significantly changed mRNAs were up- rather than down-regulated, especially at early time points. Up-regulated transcripts over the first 24 hours belonged to pathways involving eicosanoid metabolism, oxidative stress, activation of PKC through G protein coupled receptors, or mechanism of gene regulation by peroxisome proliferators via PPARα. Additionally, a marked activation of Toll-receptor mediated pathways was observed. Comparison with published microarray data from macrophages infected with L. (Leishmania) chagasi indicate differences in the regulation of genes involved in signaling, motility and the immune response. Conclusions Results show that the early (0.5 to 24 hours) human monocyte-derived macrophage response to L. (Viannia) panamensis is not quiescent, in contrast to published reports examining later response times (48–96 hours). Early macrophage responses are important for the developing cellular response at the site of infection. The kinetics and the mRNA abundance profiles induced by L. (Viannia) panamensis illustrate the dynamics of these interactions and the distinct biologic responses to different Leishmania species from the outset of infection within their primary host cell. Leishmania parasites cause a spectrum of diseases (cutaneous, visceral and the deforming forms—chronic cutaneous and mucocutaneous) known as leishmaniasis. The macrophage, a key cell in the immune system, is the cellular target of Leishmania parasites in the mammalian host. Previous studies showed the responses of monocytederived macrophages from naturally infected humans to infection with Leishmania (Viannia) panamensis were key to adaptive immune responses and clinical outcome. Consequently, an mRNA microarray approach was employed to assess the changes in macrophage gene expression over time (0.5 to 24 hours) induced by L. panamensis. The highest level of gene expression induction occurred early (0.5–4 hours); the early pathways (groups of genes) activated included those involved in the innate immune response (signaling, phagocytosis, TLR activation, and inflammatory). Early gene activation is presumed to be important for the developing cellular milieu at the site of infection. By 24 hours post-infection the dominant pathways involved metabolic functions. However, a comparison of the macrophage response to L. (V.) panamensis to that of L. (L.) chagasi (causative agent of visceral leishmaniasis) at 24 hours revealed a differential up-regulation of genes (cell adhesion, signaling, and inflammation) in response to these species. These observations underscore the distinct biology of different Leishmania species from the outset of infection.
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Cytotoxicity of functionalized carbon nanotubes in J774A macrophages. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2012; 8:853-9. [DOI: 10.1016/j.nano.2011.10.002] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Revised: 08/31/2011] [Accepted: 10/02/2011] [Indexed: 01/09/2023]
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