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Lin ZJ, Dong X, He H, Jiang JL, Guan ZJ, Li X, Lu L, Li H, Huang YS, Xian SX, Yang ZQ, Chen ZX, Fang HC, Wang LJ. A simplified herbal decoction attenuates myocardial infarction by regulating macrophage metabolic reprogramming and phenotypic differentiation via modulation of the HIF-1α/PDK1 axis. Chin Med 2024; 19:75. [PMID: 38816815 PMCID: PMC11140944 DOI: 10.1186/s13020-024-00933-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 04/14/2024] [Indexed: 06/01/2024] Open
Abstract
BACKGROUND Myocardial infarction (MI) poses a global public health challenge, often associated with elevated mortality rates and a grim prognosis. A crucial aspect of the inflammatory injury and healing process post-MI involves the dynamic differentiation of macrophages. A promising strategy to alleviate myocardial damage after MI is by modulating the inflammatory response and orchestrating the shift from pro-inflammatory (M1) to anti-inflammatory (M2) macrophages, aiming to achieve a reduced M1/M2 ratio. Nuanxinkang (NXK), a simplified herbal decoction, has demonstrated noteworthy cardioprotective, inflammation-regulating, and myocardial energy metabolism-regulating properties. METHODS In this study, we constructed an MI model by ligating coronary arteries to investigate the efficacy of NXK in improving ventricular remodeling and cardiac function. Mice were administered NXK (1.65 g/kg/d) or an equivalent volume of regular saline via gavage for 28 consecutive days, commencing the day after surgery. Then, we conducted echocardiography to assess the cardiac function, Masson staining to illustrate the extent of myocardial fibrosis, TUNEL staining to reveal myocardial apoptosis, and flow cytometry to analyze the polarization of M1 and M2 macrophages in the hearts. Besides, a lipopolysaccharide (LPS)-induced pro-inflammatory macrophage (M1) polarization model was implemented in RAW264.7 cells to elucidate the underlying mechanism of NXK in regulating macrophage polarization. RAW264.7 cells were pre-treated with or without NXK-containing serum. Oxidative stress was detected by MitoSox staining, followed by Seahorse energy metabolism assay to evaluate alterations in mitochondrial metabolic patterns and ATP production. Both In vivo and in vitro, HIF-1α and PDK1 were detected by fluorescent quantitative PCR and Western blotting. RESULTS In vivo, MI mice exhibited a decline in cardiac function, adverse ventricular remodeling, and an increase in glycolysis, coupled with M1-dominant polarization mediated by the HIF-1α/PDK1 axis. Notably, robust responses were evident with high-dose NXK treatment (1.65 g/kg/day), leading to a significant enhancement in cardiac function, inhibition of cardiac remodeling, and partial suppression of macrophage glycolysis and the inflammatory phenotype in MI mice. This effect was achieved through the modulation of the HIF-1α/PDK1 axis. In vitro, elevated levels of mitochondrial ROS production and glycolysis were observed in LPS-induced macrophages. Conversely, treatment with NXK notably reduced the oxidative stress damage induced by LPS and enhanced oxidative phosphorylation (OXPHOS). Furthermore, NXK demonstrated the ability to modify the energy metabolism and inflammatory characteristics of macrophages by modulating the HIF-1α/PDK1 axis. The influence of NXK on this axis was partially counteracted by the HIF-1α agonist DMOG. And NXK downregulated PDK1 expression, curtailed glycolysis, and reversed LPS-induced M1 polarization in macrophages, similar to the PDK1 inhibitor DCA. CONCLUSION In conclusion, NXK protects against MI-induced cardiac remodeling by inducing metabolic reprogramming and phenotypic differentiation of macrophages, achieved through the modulation of the HIF-1α/PDK1 axis. This provides a novel and promising strategy for the treatment of MI.
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Affiliation(s)
- Zhi-Jun Lin
- State Key Laboratory of Traditional Chinese Medicine Syndrome,The First Affiliated Hospital of Guangzhou University of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Lingnan Medical Research Center, Guangdong Clinical Researh Academy of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Guangzhou Key Laboratory of Chinese Medicine for Prevention and Treatment of Chronic Heart Failure, Guangzhou, 510405, People's Republic of China
| | - Xin Dong
- State Key Laboratory of Traditional Chinese Medicine Syndrome,The First Affiliated Hospital of Guangzhou University of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Lingnan Medical Research Center, Guangdong Clinical Researh Academy of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Guangzhou Key Laboratory of Chinese Medicine for Prevention and Treatment of Chronic Heart Failure, Guangzhou, 510405, People's Republic of China
| | - Huan He
- State Key Laboratory of Traditional Chinese Medicine Syndrome,The First Affiliated Hospital of Guangzhou University of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Lingnan Medical Research Center, Guangdong Clinical Researh Academy of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Guangzhou Key Laboratory of Chinese Medicine for Prevention and Treatment of Chronic Heart Failure, Guangzhou, 510405, People's Republic of China
| | - Jia-Lin Jiang
- State Key Laboratory of Traditional Chinese Medicine Syndrome,The First Affiliated Hospital of Guangzhou University of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Lingnan Medical Research Center, Guangdong Clinical Researh Academy of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Guangzhou Key Laboratory of Chinese Medicine for Prevention and Treatment of Chronic Heart Failure, Guangzhou, 510405, People's Republic of China
| | - Zhuo-Ji Guan
- State Key Laboratory of Traditional Chinese Medicine Syndrome,The First Affiliated Hospital of Guangzhou University of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Lingnan Medical Research Center, Guangdong Clinical Researh Academy of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Guangzhou Key Laboratory of Chinese Medicine for Prevention and Treatment of Chronic Heart Failure, Guangzhou, 510405, People's Republic of China
| | - Xuan Li
- State Key Laboratory of Traditional Chinese Medicine Syndrome,The First Affiliated Hospital of Guangzhou University of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Lingnan Medical Research Center, Guangdong Clinical Researh Academy of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Guangzhou Key Laboratory of Chinese Medicine for Prevention and Treatment of Chronic Heart Failure, Guangzhou, 510405, People's Republic of China
| | - Lu Lu
- State Key Laboratory of Traditional Chinese Medicine Syndrome,The First Affiliated Hospital of Guangzhou University of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Lingnan Medical Research Center, Guangdong Clinical Researh Academy of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Guangzhou Key Laboratory of Chinese Medicine for Prevention and Treatment of Chronic Heart Failure, Guangzhou, 510405, People's Republic of China
| | - Huan Li
- State Key Laboratory of Traditional Chinese Medicine Syndrome,The First Affiliated Hospital of Guangzhou University of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Lingnan Medical Research Center, Guangdong Clinical Researh Academy of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Guangzhou Key Laboratory of Chinese Medicine for Prevention and Treatment of Chronic Heart Failure, Guangzhou, 510405, People's Republic of China
| | - Yu-Sheng Huang
- State Key Laboratory of Traditional Chinese Medicine Syndrome,The First Affiliated Hospital of Guangzhou University of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Lingnan Medical Research Center, Guangdong Clinical Researh Academy of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Guangzhou Key Laboratory of Chinese Medicine for Prevention and Treatment of Chronic Heart Failure, Guangzhou, 510405, People's Republic of China
| | - Shao-Xiang Xian
- State Key Laboratory of Traditional Chinese Medicine Syndrome,The First Affiliated Hospital of Guangzhou University of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Lingnan Medical Research Center, Guangdong Clinical Researh Academy of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Guangzhou Key Laboratory of Chinese Medicine for Prevention and Treatment of Chronic Heart Failure, Guangzhou, 510405, People's Republic of China
| | - Zhong-Qi Yang
- State Key Laboratory of Traditional Chinese Medicine Syndrome,The First Affiliated Hospital of Guangzhou University of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Lingnan Medical Research Center, Guangdong Clinical Researh Academy of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China
- Guangzhou Key Laboratory of Chinese Medicine for Prevention and Treatment of Chronic Heart Failure, Guangzhou, 510405, People's Republic of China
| | - Zi-Xin Chen
- State Key Laboratory of Traditional Chinese Medicine Syndrome,The First Affiliated Hospital of Guangzhou University of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China.
- Lingnan Medical Research Center, Guangdong Clinical Researh Academy of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China.
- Guangzhou Key Laboratory of Chinese Medicine for Prevention and Treatment of Chronic Heart Failure, Guangzhou, 510405, People's Republic of China.
| | - Hong-Cheng Fang
- Lingnan Medical Research Center, Guangdong Clinical Researh Academy of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China.
- Guangzhou Key Laboratory of Chinese Medicine for Prevention and Treatment of Chronic Heart Failure, Guangzhou, 510405, People's Republic of China.
- Shenzhen Hospital of Integrated Traditional Chinese and Western Medicine, No. 3 Shajing Street, Bao'an District, Shenzhen, 518104, People's Republic of China.
| | - Ling-Jun Wang
- State Key Laboratory of Traditional Chinese Medicine Syndrome,The First Affiliated Hospital of Guangzhou University of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China.
- Lingnan Medical Research Center, Guangdong Clinical Researh Academy of Chinese Medicine, No. 12 Jichang Road, Baiyun District, Guangzhou, 510405, People's Republic of China.
- Guangzhou Key Laboratory of Chinese Medicine for Prevention and Treatment of Chronic Heart Failure, Guangzhou, 510405, People's Republic of China.
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Franco AR, Sadones O, Romerio A, Artusa V, Shaik MM, Pasco ST, Italia A, D'Amato S, Anguita J, Huebner J, Romero-Saavedra F, Peri F. Novel TLR4-Activating Vaccine Adjuvant Enhances the Production of Enterococcus faecium-binding Antibodies. J Med Chem 2024; 67:5603-5616. [PMID: 38513080 DOI: 10.1021/acs.jmedchem.3c02215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
Vaccines are one of the greatest achievements of modern medicine. Due to their safer profile, the latest investigations usually focus on subunit vaccines. However, the active component often needs to be coupled with an adjuvant to be effective and properly trigger an immune response. We are developing a new synthetic monosaccharide-based TLR4 agonist, such as glucosamine-derived compounds FP18 and FP20, as a potential vaccine adjuvant. In this study, we present a new FP20 derivative, FP20Hmp, with a hydroxylated ester linked to the glucosamine core. We show that the modification introduced improves the activity of the adjuvant and its solubility. This study presents the synthesis of FP20Hmp, its in vitro characterization, and in vivo activity while coupled with the ovalbumin antigen or in formulation with an enterococcal antigen. We show that FP20Hmp enables increased production of antigen-specific antibodies that bind to the whole bacterium.
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Affiliation(s)
- Ana Rita Franco
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza, 2, Milano 20126, Italy
| | - Océane Sadones
- Division of Pediatric Infectious disease, Hauner Children's Hospital, LMU, Munich 80337, Germany
| | - Alessio Romerio
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza, 2, Milano 20126, Italy
| | - Valentina Artusa
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza, 2, Milano 20126, Italy
| | - Mohammed Monsoor Shaik
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza, 2, Milano 20126, Italy
| | - Samuel T Pasco
- Inflammation and Macrophage Plasticity Laboratory, CIC bioGUNE-Basque Research and Technology Alliance (BRTA), Parque Tecnológico de Bizkaia, Derio 48160, Spain
| | - Alice Italia
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza, 2, Milano 20126, Italy
| | - Simona D'Amato
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza, 2, Milano 20126, Italy
| | - Juan Anguita
- Inflammation and Macrophage Plasticity Laboratory, CIC bioGUNE-Basque Research and Technology Alliance (BRTA), Parque Tecnológico de Bizkaia, Derio 48160, Spain
- Ikerbasque, Basque Foundation for Science, Plaza Euskadi 5, Bilbao 48009, Spain
| | - Johannes Huebner
- Division of Pediatric Infectious disease, Hauner Children's Hospital, LMU, Munich 80337, Germany
| | - Felipe Romero-Saavedra
- Division of Pediatric Infectious disease, Hauner Children's Hospital, LMU, Munich 80337, Germany
| | - Francesco Peri
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza, 2, Milano 20126, Italy
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Ali Q, Ma S, Liu B, Niu J, Liu M, Mustafa A, Li D, Wang Z, Sun H, Cui Y, Shi Y. Supplementing Ryegrass Ameliorates Commercial Diet-Induced Gut Microbial Dysbiosis-Associated Spleen Dysfunctions by Gut-Microbiota-Spleen Axis. Nutrients 2024; 16:747. [PMID: 38474875 DOI: 10.3390/nu16050747] [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: 01/11/2024] [Revised: 02/24/2024] [Accepted: 02/29/2024] [Indexed: 03/14/2024] Open
Abstract
The type and composition of food strongly affect the variation and enrichment of the gut microbiota. The gut-microbiota-spleen axis has been developed, incorporating the spleen's function and maturation. However, how short-chain fatty-acid-producing gut microbiota can be considered to recover spleen function, particularly in spleens damaged by changed gut microbiota, is unknown in geese. Therefore, the gut microbial composition of the caecal chyme of geese was assessed by 16S rRNA microbial genes, and a Tax4Fun analysis identified the enrichment of KEGG orthologues involved in lipopolysaccharide production. The concentrations of LPS, reactive oxygen species, antioxidant/oxidant enzymes, and immunoglobulins were measured from serum samples and spleen tissues using ELISA kits. Quantitative reverse transcription PCR was employed to detect the Kelch-like-ECH-associated protein 1-Nuclear factor erythroid 2-related factor 2 (Keap1-Nrf2), B cell and T cell targeting markers, and anti-inflammatory/inflammatory cytokines from the spleen tissues of geese. The SCFAs were determined from the caecal chyme of geese by using gas chromatography. In this study, ryegrass-enriched gut microbiota such as Eggerthellaceae, Oscillospiraceae, Rikenellaceae, and Lachnospiraceae attenuated commercial diet-induced gut microbial alterations and spleen dysfunctions in geese. Ryegrass significantly improved the SCFAs (acetic, butyric, propionic, isovaleric, and valeric acids), AMPK pathway-activated Nrf2 redox signaling cascades, B cells (B220, CD19, and IgD), and T cells (CD3, CD4, CD8, and IL-2, with an exception of IL-17 and TGF-β) to activate anti-inflammatory cytokines (IL-4 and IL-10) and immunoglobulins (IgA, IgG, and IgM) in geese. In conclusion, ryegrass-improved reprogramming of the gut microbiota restored the spleen functions by attenuating LPS-induced oxidative stress and systemic inflammation through the gut-microbiota-spleen axis in geese.
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Affiliation(s)
- Qasim Ali
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China
| | - Sen Ma
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China
- Henan Key Laboratory of Innovation and Utilization of Grassland Resources, Zhengzhou 450002, China
- Henan Herbage Engineering Technology Research Center, Zhengzhou 450001, China
| | - Boshuai Liu
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China
- Henan Key Laboratory of Innovation and Utilization of Grassland Resources, Zhengzhou 450002, China
- Henan Herbage Engineering Technology Research Center, Zhengzhou 450001, China
| | - Jiakuan Niu
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China
| | - Mengqi Liu
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China
| | - Ahsan Mustafa
- Department of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China
| | - Defeng Li
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China
- Henan Key Laboratory of Innovation and Utilization of Grassland Resources, Zhengzhou 450002, China
- Henan Herbage Engineering Technology Research Center, Zhengzhou 450001, China
| | - Zhichang Wang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China
- Henan Key Laboratory of Innovation and Utilization of Grassland Resources, Zhengzhou 450002, China
- Henan Herbage Engineering Technology Research Center, Zhengzhou 450001, China
| | - Hao Sun
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China
- Henan Key Laboratory of Innovation and Utilization of Grassland Resources, Zhengzhou 450002, China
- Henan Herbage Engineering Technology Research Center, Zhengzhou 450001, China
| | - Yalei Cui
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China
- Henan Key Laboratory of Innovation and Utilization of Grassland Resources, Zhengzhou 450002, China
- Henan Herbage Engineering Technology Research Center, Zhengzhou 450001, China
| | - Yinghua Shi
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, China
- Henan Key Laboratory of Innovation and Utilization of Grassland Resources, Zhengzhou 450002, China
- Henan Herbage Engineering Technology Research Center, Zhengzhou 450001, China
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4
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Román-Cruz VC, Miller SM, Schoener RA, Lukasiewicz C, Schmidt AK, DeBuysscher BL, Burkhart D, Secor PR, Evans JT. Adjuvanted Vaccine Induces Functional Antibodies against Pseudomonas aeruginosa Filamentous Bacteriophages. Vaccines (Basel) 2024; 12:115. [PMID: 38400099 PMCID: PMC10892371 DOI: 10.3390/vaccines12020115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/27/2023] [Accepted: 01/18/2024] [Indexed: 02/25/2024] Open
Abstract
Pseudomonas aeruginosa (Pa), a WHO priority 1 pathogen, resulted in approximately 559,000 deaths globally in 2019. Pa has a multitude of host-immune evasion strategies that enhance Pa virulence. Most clinical isolates of Pa are infected by a phage called Pf that has the ability to misdirect the host-immune response and provide structural integrity to biofilms. Previous studies demonstrate that vaccination against the coat protein (CoaB) of Pf4 virions can assist in the clearance of Pa from the dorsal wound model in mice. Here, a consensus peptide was derived from CoaB and conjugated to cross-reacting material 197 (CRM197). This conjugate was adjuvanted with a novel synthetic Toll-like receptor agonist (TLR) 4 agonist, INI-2002, and used to vaccinate mice. Mice vaccinated with CoaB-CRM conjugate and INI-2002 developed high anti-CoaB peptide-specific IgG antibody titers. Direct binding of the peptide-specific antibodies to whole-phage virus particles was demonstrated by ELISA. Furthermore, a functional assay demonstrated that antibodies generated from vaccinated mice disrupted the replicative cycle of Pf phages. The use of an adjuvanted phage vaccine targeting Pa is an innovative vaccine strategy with the potential to become a new tool targeting multi-drug-resistant Pa infections in high-risk populations.
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Affiliation(s)
- Valery C. Román-Cruz
- Division of Biological Sciences, University of Montana, Missoula, MT 59812, USA; (V.C.R.-C.); (A.K.S.); (P.R.S.)
- Center for Translational Medicine, University of Montana, Missoula, MT 59812, USA; (C.L.); (B.L.D.); (D.B.)
| | | | | | - Chase Lukasiewicz
- Center for Translational Medicine, University of Montana, Missoula, MT 59812, USA; (C.L.); (B.L.D.); (D.B.)
- Department of Biomedical & Pharmaceutical Sciences, University of Montana, Missoula, MT 59812, USA
| | - Amelia K. Schmidt
- Division of Biological Sciences, University of Montana, Missoula, MT 59812, USA; (V.C.R.-C.); (A.K.S.); (P.R.S.)
| | - Blair L. DeBuysscher
- Center for Translational Medicine, University of Montana, Missoula, MT 59812, USA; (C.L.); (B.L.D.); (D.B.)
- Department of Biomedical & Pharmaceutical Sciences, University of Montana, Missoula, MT 59812, USA
| | - David Burkhart
- Center for Translational Medicine, University of Montana, Missoula, MT 59812, USA; (C.L.); (B.L.D.); (D.B.)
- Inimmune Corporation, Missoula, MT 59802, USA; (S.M.M.); (R.A.S.)
- Department of Biomedical & Pharmaceutical Sciences, University of Montana, Missoula, MT 59812, USA
| | - Patrick R. Secor
- Division of Biological Sciences, University of Montana, Missoula, MT 59812, USA; (V.C.R.-C.); (A.K.S.); (P.R.S.)
- Center for Translational Medicine, University of Montana, Missoula, MT 59812, USA; (C.L.); (B.L.D.); (D.B.)
| | - Jay T. Evans
- Division of Biological Sciences, University of Montana, Missoula, MT 59812, USA; (V.C.R.-C.); (A.K.S.); (P.R.S.)
- Center for Translational Medicine, University of Montana, Missoula, MT 59812, USA; (C.L.); (B.L.D.); (D.B.)
- Inimmune Corporation, Missoula, MT 59802, USA; (S.M.M.); (R.A.S.)
- Department of Biomedical & Pharmaceutical Sciences, University of Montana, Missoula, MT 59812, USA
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Cai Y, Yu R, Zhang Z, Li D, Yi B, Feng Z, Xu Q. Mettl3/Ythdf2 regulate macrophage inflammation and ROS generation by controlling Pyk2 mRNA stability. Immunol Lett 2023; 264:64-73. [PMID: 37952687 DOI: 10.1016/j.imlet.2023.11.004] [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: 04/13/2023] [Revised: 10/07/2023] [Accepted: 11/09/2023] [Indexed: 11/14/2023]
Abstract
As one of the most prevalent modifications on RNA, N6-methyladenosine (m6A) has been recently found implicated in various pathological processes. Emerging studies have demonstrated the role of m6A and its writer Mettl3 in fine-tuning the immune response, which now becomes a research hotspot owing to its potential therapeutic value. However, the results are inconsistent and even contradictory, suggesting that there might be multiple Mettl3 target genes involved in different pathways. To delve deeper into the function of Mettl3 in the cellular inflammatory response, we first conducted bioinformatics analysis using RNA-seq in Mettl3 ablation macrophages, and found that Mettl3 might attenuate LPS-induced proinflammatory pathways and reactive oxygen species (ROS) generation process. Mettl3 knockdown significantly increased the LPS-induced IL-6, TNF-α, NOXs (Nox1, Nox2, Ncf1, and Ncf2) expression, ROS generation, and the phosphorylation of MAPKs and AKT signaling. Combining the results of RNA-seq and m6A mapping, we found that Pyk2 might be the target gene of Mettl3 affecting the inflammatory response. Mettl3 and Ythdf2 depletion increased the expression and mRNA stability of Pyk2, and RIP-PCR showed that Ythdf2 directly targeting Pyk2 was Mettl3 dependent. Moreover, the upregulated expression of TNF-α, IL-6, NOXs, ROS generation, and the phosphorylation of MAPKs and AKT signaling were downregulated by Pyk2 inhibitor in Mettl3 knockdown cells. All of these results suggest that Mettl3 regulates the mRNA stability and expression of Pyk2 in a Ythdf2-dependent way, which consequently triggers the activation of MAPKs and AKT signaling and upregulation of NOXs, thus promoting the generation of proinflammatory cytokines and ROS.
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Affiliation(s)
- Yongjie Cai
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
| | - Ruiqing Yu
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
| | - Zhanqi Zhang
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
| | - Di Li
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
| | - Baicheng Yi
- Department of Stomatology, Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, Shenzhen 518055, China
| | - Zhihui Feng
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou 510055, China.
| | - Qiong Xu
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou 510055, China.
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Oh YJ, Jin SE, Shin HK, Ha H. Daeshiho-tang attenuates inflammatory response and oxidative stress in LPS-stimulated macrophages by regulating TLR4/MyD88, NF-κB, MAPK, and Nrf2/HO-1 pathways. Sci Rep 2023; 13:18891. [PMID: 37919391 PMCID: PMC10622541 DOI: 10.1038/s41598-023-46033-y] [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: 08/23/2023] [Accepted: 10/26/2023] [Indexed: 11/04/2023] Open
Abstract
Daeshiho-tang (DSHT), a traditional herbal formula with diverse pharmacological effects, has shown promise in medicine owing to its anti-hypertensive, anti-diabetic, and anti-inflammatory properties. However, the precise molecular mechanism underlying these effects remains unclear. Thus, we investigated the effect of DSHT on inflammatory response and oxidative stress to understand its molecular mechanism using lipopolysaccharide (LPS)-induced macrophage (RAW 264.7) cells. DSHT decreased the contents of nitric oxide (NO) and prostaglandin E2 (PGE2) through downregulating inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) protein expressions. DSHT suppressed the LPS-induced TLR4 as well as MyD88, subsequently suppressing the NF-κB activation and the phosphorylation of MAPK (p38, ERK, and JNK). Radical scavenging activity results revealed a dose-dependent response of DSHT with diminished ABTS activity, a hallmark of oxidative stress potential. Furthermore, DSHT enhanced Nrf2 and HO-1 expression in response to LPS. Collectively, our findings indicated that DSHT exert anti-inflammatory effect and regulating oxidative stress by modulating TLR4/MyD88, NF-κB, MAPK, and Nrf2/HO-1 pathways, consequently can provide potential therapeutic strategy for the prevention and treatment of inflammation and oxidative stress-related diseases.
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Affiliation(s)
- Yong Jin Oh
- KM Science Research Division, Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-Gu, Daejeon, 34054, Korea
| | - Seong Eun Jin
- KM Science Research Division, Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-Gu, Daejeon, 34054, Korea
| | - Hyeun-Kyoo Shin
- KM Science Research Division, Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-Gu, Daejeon, 34054, Korea
| | - Hyekyung Ha
- KM Science Research Division, Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-Gu, Daejeon, 34054, Korea.
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Hedges JF, Snyder DT, Robison A, Thompson MA, Aspelin K, Plewa J, Baldridge J, Jutila MA. A TLR4 agonist liposome formulation effectively stimulates innate immunity and enhances protection from bacterial infection. Innate Immun 2023:17534259231168725. [PMID: 37083049 DOI: 10.1177/17534259231168725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023] Open
Abstract
Stimulation of innate immunity can protect against infectious insult and could be used in combination with other therapies. Since antibiotic resistance is an increasing concern, strategies to reduce the dose or eliminate the need for these drugs are warranted. Lipo-CRX is a formulation in which the TLR4 agonist CRX-527 is incorporated into lipid membranes in liposomes. Lipo-CRX is less inflammatory than either CRX-527 or LPS, but retains unique capacity to enhance host defense responses. We compared lipo-CRX to other agonists in vitro using mammalian cells and in vivo in mice, and assessed indicators of innate immune responses and protection from bacterial infection. Lipo-CRX is similar to E. coli LPS in its capacity to activate bovine γδ T cells and to recruit neutrophils into mouse lungs, but with less reactivity in the LAL assay. However, lipo-CRX uniquely induced the production of systemic innate immune cytokines. In the mouse model of brucellosis, delivery of lipo-CRX to the lungs reduced the dissemination of B. abortus. While lipo-CRX or the antibiotic ampicillin alone did not alter B. abortus burdens in the lung, the combination had a synergistic beneficial effect. Our data suggest that stimulating the innate immune system with lipo-CRX, either alone or when combined with antibiotics, can enhance bacterial clearance in the mouse model of brucellosis.
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Affiliation(s)
- Jodi F Hedges
- Department of Microbiology and Cell Biology, Montana State University, P.O. Box 173610, Bozeman, MT, USA
| | - Deann T Snyder
- Department of Microbiology and Cell Biology, Montana State University, P.O. Box 173610, Bozeman, MT, USA
| | - Amanda Robison
- Department of Microbiology and Cell Biology, Montana State University, P.O. Box 173610, Bozeman, MT, USA
| | - Macy A Thompson
- Department of Microbiology and Cell Biology, Montana State University, P.O. Box 173610, Bozeman, MT, USA
| | - Klara Aspelin
- Department of Microbiology and Cell Biology, Montana State University, P.O. Box 173610, Bozeman, MT, USA
| | - Jack Plewa
- Department of Microbiology and Cell Biology, Montana State University, P.O. Box 173610, Bozeman, MT, USA
| | - Jory Baldridge
- Totem BioSciences, 240 Old Corvallis Road, Hamilton, MT 59840, USA
| | - Mark A Jutila
- Department of Microbiology and Cell Biology, Montana State University, P.O. Box 173610, Bozeman, MT, USA
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8
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Wen C, Geervliet M, de Vries H, Fabà L, den Hil PJRV, Skovgaard K, Savelkoul HFJ, Schols HA, Wells JM, Tijhaar E, Smidt H. Agaricus subrufescens fermented rye affects the development of intestinal microbiota, local intestinal and innate immunity in suckling-to-nursery pigs. Anim Microbiome 2023; 5:24. [PMID: 37041617 PMCID: PMC10088699 DOI: 10.1186/s42523-023-00244-w] [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: 07/29/2022] [Accepted: 03/23/2023] [Indexed: 04/13/2023] Open
Abstract
BACKGROUND Agaricus subrufescens is considered as one of the most important culinary-medicinal mushrooms around the world. It has been widely suggested to be used for the development of functional food ingredients to promote human health ascribed to the various properties (e.g., anti-inflammatory, antioxidant, and immunomodulatory activities). In this context, the interest in A. subrufescens based feed ingredients as alternatives for antibiotics has also been fuelled during an era of reduced/banned antibiotics use. This study aimed to investigate the effects of a fermented feed additive -rye overgrown with mycelium (ROM) of A. subrufescens-on pig intestinal microbiota, mucosal gene expression and local and systemic immunity during early life. Piglets received ROM or a tap water placebo (Ctrl) perorally every other day from day 2 after birth until 2 weeks post-weaning. Eight animals per treatment were euthanized and dissected on days 27, 44 and 70. RESULTS The results showed ROM piglets had a lower inter-individual variation of faecal microbiota composition before weaning and a lower relative abundance of proteobacterial genera in jejunum (Undibacterium and Solobacterium) and caecum (Intestinibacter and Succinivibrionaceae_UCG_001) on day 70, as compared to Ctrl piglets. ROM supplementation also influenced gut mucosal gene expression in both ileum and caecum on day 44. In ileum, ROM pigs showed increased expression of TJP1/ZO1 but decreased expression of CLDN3, CLDN5 and MUC2 than Ctrl pigs. Genes involved in TLR signalling (e.g., TICAM2, IRAK4 and LY96) were more expressed but MYD88 and TOLLIP were less expressed in ROM pigs than Ctrl animals. NOS2 and HIF1A involved in redox signalling were either decreased or increased in ROM pigs, respectively. In caecum, differentially expressed genes between two groups were mainly shown as increased expression (e.g., MUC2, PDGFRB, TOLLIP, TNFAIP3 and MYD88) in ROM pigs. Moreover, ROM animals showed higher NK cell activation in blood and enhanced IL-10 production in ex vivo stimulated MLN cells before weaning. CONCLUSIONS Collectively, these results suggest that ROM supplementation in early life modulates gut microbiota and (local) immune system development. Consequently, ROM supplementation may contribute to improving health of pigs during the weaning transition period and reducing antibiotics use.
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Affiliation(s)
- Caifang Wen
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, The Netherlands
- Laboratory of Food Chemistry, Wageningen University & Research, Wageningen, The Netherlands
| | - Mirelle Geervliet
- Cell Biology and Immunology Group, Wageningen University & Research, Wageningen, The Netherlands
| | - Hugo de Vries
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, The Netherlands
- Host-Microbe Interactomics Group, Wageningen University & Research, Wageningen, The Netherlands
| | - Lluís Fabà
- Research and Development, Trouw Nutrition, Amersfoort, The Netherlands
| | - Petra J Roubos-van den Hil
- Research and Development, Trouw Nutrition, Amersfoort, The Netherlands
- DSM Food and Beverages - Fresh Dairy, Wageningen, The Netherlands
| | - Kerstin Skovgaard
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Lyngby, Denmark
| | - Huub F J Savelkoul
- Cell Biology and Immunology Group, Wageningen University & Research, Wageningen, The Netherlands
| | - Henk A Schols
- Laboratory of Food Chemistry, Wageningen University & Research, Wageningen, The Netherlands
| | - Jerry M Wells
- Host-Microbe Interactomics Group, Wageningen University & Research, Wageningen, The Netherlands
| | - Edwin Tijhaar
- Cell Biology and Immunology Group, Wageningen University & Research, Wageningen, The Netherlands
| | - Hauke Smidt
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, The Netherlands.
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Helixor-M Suppresses Immunostimulatory Activity through TLR4-Dependent NF-κB Pathway in RAW 264.7 Cells. Life (Basel) 2023; 13:life13020595. [PMID: 36836952 PMCID: PMC9966133 DOI: 10.3390/life13020595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/10/2023] [Accepted: 02/17/2023] [Indexed: 02/23/2023] Open
Abstract
Inflammation causes a protective immune response, which can be observed by examining the inflammatory responses of macrophages. Macrophages release various immunostimulatory factors when destroying external pathogens. We induced lipopolysaccharides (LPS) in RAW 264.7 cells, a macrophage cell line, to determine whether Helixor-M can cause immuno-suppression. Helixor-M is known to have anticancer and immune effects. However, an indicator that regulates immunity has not been clearly confirmed. To this end, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay was conducted to confirm Helixor-M was not cytotoxic. Western blotting and real-time polymerase chain reaction (RT-PCR) confirmed the anti-inflammatory effects. Additionally, immunofluorescence assay confirmed the translocation of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) p65, a representative inflammatory pathway. Helixor-M was found to be non-cytotoxic, induce the NF-κB pathway, and reduce the levels of pro-inflammatory cytokine and mitogen-activated protein kinase (MAPK). We found Helixor-M affected the PI3K/AKT/JNK pathway. Therefore, we confirmed Helixor-M acts as an anti-inflammatory agent through NF-κB, TLR4 and PI3K inhibition and that it could be an effective immunosuppressive drug.
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Owen AM, Luan L, Burelbach KR, McBride MA, Stothers CL, Boykin OA, Sivanesam K, Schaedel JF, Patil TK, Wang J, Hernandez A, Patil NK, Sherwood ER, Bohannon JK. MyD88-dependent signaling drives toll-like receptor-induced trained immunity in macrophages. Front Immunol 2022; 13:1044662. [PMID: 36439136 PMCID: PMC9692127 DOI: 10.3389/fimmu.2022.1044662] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 10/24/2022] [Indexed: 09/08/2023] Open
Abstract
Immunocompromised populations are highly vulnerable to developing life-threatening infections. Strategies to protect patients with weak immune responses are urgently needed. Employing trained immunity, whereby innate leukocytes undergo reprogramming upon exposure to a microbial product and respond more robustly to subsequent infection, is a promising approach. Previously, we demonstrated that the TLR4 agonist monophosphoryl lipid A (MPLA) induces trained immunity and confers broad resistance to infection. TLR4 signals through both MyD88- and TRIF-dependent cascades, but the relative contribution of each pathway to induction of trained immunity is unknown. Here, we show that MPLA-induced resistance to Staphylococcus aureus infection is lost in MyD88-KO, but not TRIF-KO, mice. The MyD88-activating agonist CpG (TLR9 agonist), but not TRIF-activating Poly I:C (TLR3 agonist), protects against infection in a macrophage-dependent manner. MPLA- and CpG-induced augmentation of macrophage metabolism and antimicrobial functions is blunted in MyD88-, but not TRIF-KO, macrophages. Augmentation of antimicrobial functions occurs in parallel to metabolic reprogramming and is dependent, in part, on mTOR activation. Splenic macrophages from CpG-treated mice confirmed that TLR/MyD88-induced reprogramming occurs in vivo. TLR/MyD88-triggered metabolic and functional reprogramming was reproduced in human monocyte-derived macrophages. These data show that MyD88-dependent signaling is critical in TLR-mediated trained immunity.
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Affiliation(s)
- Allison M. Owen
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Liming Luan
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Katherine R. Burelbach
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Margaret A. McBride
- Department of Pathology, Microbiology, & Immunology, Vanderbilt University, Medical Center, Nashville, TN, United States
| | - Cody L. Stothers
- Department of Pathology, Microbiology, & Immunology, Vanderbilt University, Medical Center, Nashville, TN, United States
| | - Olivia A. Boykin
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Kalkena Sivanesam
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
- Washington State University Elson S. Floyd College of Medicine, Spokane, WA, United States
| | - Jessica F. Schaedel
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Tazeen K. Patil
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Jingbin Wang
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Antonio Hernandez
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Naeem K. Patil
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Edward R. Sherwood
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
- Department of Pathology, Microbiology, & Immunology, Vanderbilt University, Medical Center, Nashville, TN, United States
| | - Julia K. Bohannon
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
- Department of Pathology, Microbiology, & Immunology, Vanderbilt University, Medical Center, Nashville, TN, United States
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11
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Li W, Luo F, Wu X, Fan B, Yang M, Zhong W, Guan D, Wang F, Wang Q. Anti-Inflammatory Effects and Mechanisms of Dandelion in RAW264.7 Macrophages and Zebrafish Larvae. Front Pharmacol 2022; 13:906927. [PMID: 36091818 PMCID: PMC9454954 DOI: 10.3389/fphar.2022.906927] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 06/23/2022] [Indexed: 11/13/2022] Open
Abstract
Dandelions (Taraxacum spp.) play an important role in the treatment of inflammatory diseases. In this study, we investigated the anti-inflammatory effects of Dandelion Extract (DE) in LPS-induced RAW264.7 macrophages and copper sulfate (CuSO4)-induced zebrafish larvae. DE was not toxic to RAW264.7 cells at 75 μg/ml as measured by cell viability, and DE inhibited LPS-induced cell morphological changes as measured by inverted microscopy. In survival experiments, DE at 25 μg/ml had no toxicity to zebrafish larvae. By using an enzymatic standard assay, DE reduced the production of nitric oxide (NO) in LPS-induced RAW264.7 cells. Fluorescence microscopy results show that DE reduced LPS-induced ROS production and apoptosis in RAW264.7 cells. DE also inhibited CuSO4-induced ROS production and neutrophil aggregation in zebrafish larvae. The results of flow cytometry show that DE alleviated the LPS-induced cell cycle arrest. In LPS-induced RAW264.7 cells, RT-PCR revealed that DE decreased the expression of M1 phenotypic genes iNOS, IL-6, and IL-1β while increasing the expression of M2 phenotypic genes IL-10 and CD206. Furthermore, in CuSO4-induced zebrafish larvae, DE reduced the expression of iNOS, TNF-α, IL-6, and IL-10. The findings suggest that DE reduces the LPS-induced inflammatory response in RAW264.7 cells by regulating polarization and apoptosis. DE also reduces the CuSO4-induced inflammatory response in zebrafish larvae.
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Affiliation(s)
- Wenju Li
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China
- Department of Emergency Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Fulong Luo
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China
- Department of Emergency Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Xiaohui Wu
- Department of Neurology, The First Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Bei Fan
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Mingran Yang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Wu Zhong
- Department of Emergency Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Sichuan Provincial Rehabilitation Hospital, Chengdu, China
| | - Dongyan Guan
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Fengzhong Wang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China
- *Correspondence: Qiong Wang, , ; Fengzhong Wang,
| | - Qiong Wang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, China
- Sino-Portugal TCM International Cooperation Center, The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
- *Correspondence: Qiong Wang, , ; Fengzhong Wang,
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12
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Kobia FM, Maiti K, Obimbo MM, Smith R, Gitaka J. Potential pharmacologic interventions targeting TLR signaling in placental malaria. Trends Parasitol 2022; 38:513-524. [DOI: 10.1016/j.pt.2022.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 04/07/2022] [Accepted: 04/07/2022] [Indexed: 10/18/2022]
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13
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Phytochemicals targeting Toll-like receptors 4 (TLR4) in inflammatory bowel disease. Chin Med 2022; 17:53. [PMID: 35484567 PMCID: PMC9047385 DOI: 10.1186/s13020-022-00611-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 04/14/2022] [Indexed: 12/11/2022] Open
Abstract
Inflammatory bowel disease (IBD) is a collective term for inflammatory diseases including Crohn's disease and ulcerative colitis. Toll-like receptor 4 (TLR4) is thought to play a key role in the pathogenesis of IBD. Inhibition of TLR4 has been recognized as an effective target for the treatment of IBD. Many phytochemicals have been shown to have potential as new drugs for the treatment of IBD. This review surveyed the available literature and reports which focused on the in vivo effects of phytochemicals targeting TLR4 in different models of IBD, and clarified the significance of TLR4 as a current therapeutic target for IBD. Based on our review, we have concluded that phytochemicals targeting TLR4 are potentially effective candidates for developing new therapeutic drugs against IBD.
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14
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Tian X, Guo M, Zhang X, Guo L, Lan N, Cheng Y, Han Y, Wang M, Peng Z, Zhou C, Fan H. Strongylocentrotus nudus Eggs Polysaccharide Enhances Macrophage Phagocytosis Against E.coli Infection by TLR4/STAT3 Axis. Front Pharmacol 2022; 13:807440. [PMID: 35370674 PMCID: PMC8968116 DOI: 10.3389/fphar.2022.807440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 02/02/2022] [Indexed: 12/04/2022] Open
Abstract
Antibiotics resistance is one of the most significant public health threats globally. Strategies that strengthen host defenses to control pathogen infection has become a hot research field. Macrophages are part of early host defense mechanisms, and are activated via host pattern recognition receptors (PRRs), such as Toll-like receptor 4 (TLR4), which then facilitates phagocytosis and elimination of invading pathogens. However, few activators of PRRs have been approved for clinical use because of their toxic effects. This study aimed to investigate whether Strongylocentrotus nudus eggs polysaccharide (SEP), a non-toxic extract from seafood, contributes to host defense against bacterial infection. Results showed that SEP promoted bacterial clearance by enhancing phagocytosis by macrophages during E. coli infection in vitro, but was inhibited by TLR4 specific inhibitor TAK-242, STAT3 inhibitor Stattic or blockade of CD64. In addition, SEP protected mice from E. coli induced mortality, reduced pulmonary inflammation and inhibited dissemination of bacteria to organs, while TAK-242 retarded the protection of SEP. Overall, SEP strengthened innate host defense and improved the outcome in bacterial infection, suggesting that SEP could be used as a potential immunomodulator in host-directed therapies.
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Affiliation(s)
- Xinlei Tian
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Min Guo
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Xiaoya Zhang
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Lingfeng Guo
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Nan Lan
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Yaojun Cheng
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Yannan Han
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Mingxin Wang
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Zhonglu Peng
- School of Pharmacy, Xiangnan University, Chenzhou, China
| | - Changlin Zhou
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
| | - Hongye Fan
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
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15
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Liu X, Chen X, Xie L, Xie J, Shen M. Sulfated Chinese yam polysaccharide enhances the immunomodulatory activity of RAW 264.7 cells via the TLR4-MAPK/NF-κB signaling pathway. Food Funct 2022; 13:1316-1326. [PMID: 35037682 DOI: 10.1039/d1fo03630k] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In this study, Chinese yam polysaccharide (CYP) was isolated from yam by hydroextraction and alcoholic precipitation. Subsequently, the chlorosulfate-pyridine (CSA-Pyr) method was used to obtain the sulfated Chinese yam polysaccharide derivative (S-CYP) to evaluate its immunomodulatory activity in RAW 264.7 cells and to investigate its mechanism of action. The results revealed that the sulfated modification altered the physicochemical properties of CYP but had no impact on the main chain structure. S-CYP demonstrated excellent immunomodulatory activity by increasing the viability of RAW 264.7 macrophage cells and stimulating the production of reactive oxygen species (ROS), nitric oxide (NO), tumor necrosis factor-α (TNF-α) and interleukin (IL)-6. Moreover, signal transduction experiments showed that S-CYP induced the activation of mitogen-activated protein kinase (MAPK) and nuclear factor-κB (NF-κB) pathways through toll-like receptor 4 (TLR4), dramatically increasing p-ERK, p-JNK and p-p38 proteins. Meanwhile, immunofluorescence results showed that S-CYP could significantly promote the entry of NF-κB p65 into the nucleus, which is essential for triggering the NF-κB pathway. Furthermore, blocking antibody experiments revealed that specific inhibitors of TLR4, MAPKs, and NF-κB suppressed the generation of TNF-α and IL-6 in RAW 264.7 cells. These findings suggested that both CYP and S-CYP could be used as immunomodulatory agents and may have potential application prospects in the food and pharmaceutical industries.
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Affiliation(s)
- Xuan Liu
- State Key Laboratory of Food Science and Technology, Nanchang University, No. 235 Nanjing East Road, Nanchang 330047, Jiangxi, China.
| | - Xianxiang Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, No. 235 Nanjing East Road, Nanchang 330047, Jiangxi, China.
| | - Liuming Xie
- State Key Laboratory of Food Science and Technology, Nanchang University, No. 235 Nanjing East Road, Nanchang 330047, Jiangxi, China.
| | - Jianhua Xie
- State Key Laboratory of Food Science and Technology, Nanchang University, No. 235 Nanjing East Road, Nanchang 330047, Jiangxi, China.
| | - Mingyue Shen
- State Key Laboratory of Food Science and Technology, Nanchang University, No. 235 Nanjing East Road, Nanchang 330047, Jiangxi, China.
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16
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Rocha-Gomes A, Teixeira AE, Santiago CMO, Oliveira DGD, Silva AAD, Lacerda ACR, Riul TR, Mendonça VA, Rocha-Vieira E, Leite HR. Prenatal LPS exposure increases hippocampus IL-10 and prevents short-term memory loss in the male adolescent offspring of high-fat diet fed dams. Physiol Behav 2022; 243:113628. [PMID: 34695488 DOI: 10.1016/j.physbeh.2021.113628] [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: 08/15/2021] [Revised: 10/18/2021] [Accepted: 10/20/2021] [Indexed: 11/25/2022]
Abstract
Lipopolysaccharide (LPS) tolerance can reduce the neuroinflammation caused by high fat maternal diets; however, there are no reports that have evaluated the effects of prenatal LPS exposure on the memories of the offspring of high-fat diet fed dams. This study evaluated the effects of prenatal LPS exposure on the inflammatory parameters and redox status in the brain, as well as the object recognition memory of adolescent offspring of Wistar rat dams that were treated with a high-fat diet during gestation and lactation. Female pregnant Wistar rats randomly received a standard diet (17.5% fat) or a high-fat diet (45.0% fat) during gestation and lactation. On gestation days 8, 10, and 12, half of the females in each group were intraperitoneally treated with LPS (0.1 mg.kg-1). After weaning, the male offspring were placed in cages in standard conditions, and at 6 weeks old, animals underwent the novel object recognition test (for short- and long-term memory). The offspring of the high-fat diet fed dams showed increased hippocampus IL-6 levels (21-days-old) and impaired short-term memories. These effects were avoided in the offspring of high-fat diet fed dams submitted to prenatal LPS exposure, which showed greater hippocampus IL-10 levels (at 21- and 50-days-old), increased antioxidant activity (50-days-old) in the hippocampus and prefrontal cortex, without memory impairments (short- and long-term memory). IL-6 has been consistently implicated in memory deficits and as an endogenous mechanism for limiting plasticity, while IL-10 regulates glial activation and has a strong association with improvements in cognitive function. Prenatal LPS exposure preventing the increase of IL-6 in the hippocampus and the impairment to short-term object recognition memory caused by the high-fat maternal diet.
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Affiliation(s)
- Arthur Rocha-Gomes
- Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, 39100-000 Brasil; Laboratório de Nutrição Experimental - LabNutrex - Departamento de Nutrição. Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil.
| | - Amanda Escobar Teixeira
- Laboratório de Nutrição Experimental - LabNutrex - Departamento de Nutrição. Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - Camilla Mainy Oliveira Santiago
- Laboratório de Nutrição Experimental - LabNutrex - Departamento de Nutrição. Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil; Programa de Pós-Graduação em Ciências da Nutrição, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - Dalila Gomes de Oliveira
- Laboratório de Nutrição Experimental - LabNutrex - Departamento de Nutrição. Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - Alexandre Alves da Silva
- Laboratório de Nutrição Experimental - LabNutrex - Departamento de Nutrição. Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - Ana Cristina Rodrigues Lacerda
- Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, 39100-000 Brasil
| | - Tania Regina Riul
- Laboratório de Nutrição Experimental - LabNutrex - Departamento de Nutrição. Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil; Programa de Pós-Graduação em Ciências da Nutrição, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brasil
| | - Vanessa Amaral Mendonça
- Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, 39100-000 Brasil
| | - Etel Rocha-Vieira
- Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, 39100-000 Brasil
| | - Hércules Ribeiro Leite
- Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, 39100-000 Brasil; Departamento de Fisioterapia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901 Brasil.
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17
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Larsson L, Garaicoa-Pazmino C, Asa'ad F, Castilho RM. Understanding the role of endotoxin tolerance in chronic inflammatory conditions and periodontal disease. J Clin Periodontol 2021; 49:270-279. [PMID: 34970759 DOI: 10.1111/jcpe.13591] [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] [Received: 09/08/2021] [Revised: 12/17/2021] [Accepted: 12/23/2021] [Indexed: 12/14/2022]
Abstract
OBJECTIVE This review aims to present the current understanding of endotoxin tolerance (ET) in chronic inflammatory diseases and explores the potential connection with periodontitis. SUMMARY Subsequent exposure to lipopolysaccharides (LPS) triggers ET, a phenomenon regulated by different mechanisms and pathways, including toll-like receptors (TLRs), nuclear factor kappa-light-chain-enhancer of activated B cells (NFκB), apoptosis of immune cells, epigenetics, and microRNAs (miRNAs). These mechanisms interconnect ET with chronic inflammatory diseases that include periodontitis. While the direct correlation between ET and periodontal destruction has not been fully elucidated, emerging reports point towards the potential tolerization of human periodontal ligament cells (hPDLCs) and gingival tissues with a significant reduction of TLR levels. CONCLUSIONS There is a potential link between ET and periodontal diseases. Future studies should explore the crucial role of ET in the pathogenesis of periodontal diseases as evidence of a tolerized oral mucosa may represent an intrinsic mechanism capable of regulating the oral immune response. A clear understanding of this host immune regulatory mechanism might lead to effective and more predictable therapeutic strategies to treat chronic inflammatory diseases and periodontitis. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Lena Larsson
- Department of Periodontology Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden
| | - Carlos Garaicoa-Pazmino
- Department of Periodontics, University of Iowa, College of Dentistry and Dental Clinics, Iowa City, IA, USA.,School of Dentistry, Espíritu Santo University, Samborondon, Ecuador
| | - Farah Asa'ad
- Department of Biomaterials, Institute of Clinical Sciences, The Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden.,Department of Oral Biochemistry, Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden
| | - Rogerio M Castilho
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA.,Laboratory of Epithelial Biology, University of Michigan School of Dentistry, Ann Arbor, MI, USA
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18
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Stothers CL, Burelbach KR, Owen AM, Patil NK, McBride MA, Bohannon JK, Luan L, Hernandez A, Patil TK, Williams DL, Sherwood ER. β-Glucan Induces Distinct and Protective Innate Immune Memory in Differentiated Macrophages. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2021; 207:2785-2798. [PMID: 34740960 PMCID: PMC8612974 DOI: 10.4049/jimmunol.2100107] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 09/27/2021] [Indexed: 12/14/2022]
Abstract
Bacterial infections are a common and deadly threat to vulnerable patients. Alternative strategies to fight infection are needed. β-Glucan, an immunomodulator derived from the fungal cell wall, provokes resistance to infection by inducing trained immunity, a phenomenon that persists for weeks to months. Given the durability of trained immunity, it is unclear which leukocyte populations sustain this effect. Macrophages have a life span that surpasses the duration of trained immunity. Thus, we sought to define the contribution of differentiated macrophages to trained immunity. Our results show that β-glucan protects mice from Pseudomonas aeruginosa infection by augmenting recruitment of innate leukocytes to the site of infection and facilitating local clearance of bacteria, an effect that persists for more than 7 d. Adoptive transfer of macrophages, trained using β-glucan, into naive mice conferred a comparable level of protection. Trained mouse bone marrow-derived macrophages assumed an antimicrobial phenotype characterized by enhanced phagocytosis and reactive oxygen species production in parallel with sustained enhancements in glycolytic and oxidative metabolism, increased mitochondrial mass, and membrane potential. β-Glucan induced broad transcriptomic changes in macrophages consistent with early activation of the inflammatory response, followed by sustained alterations in transcripts associated with metabolism, cellular differentiation, and antimicrobial function. Trained macrophages constitutively secreted CCL chemokines and robustly produced proinflammatory cytokines and chemokines in response to LPS challenge. Induction of the trained phenotype was independent of the classic β-glucan receptors Dectin-1 and TLR-2. These findings provide evidence that β-glucan induces enhanced protection from infection by driving trained immunity in macrophages.
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Affiliation(s)
- Cody L Stothers
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN;
| | - Katherine R Burelbach
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN; and
| | - Allison M Owen
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN; and
| | - Naeem K Patil
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN; and
| | - Margaret A McBride
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN
| | - Julia K Bohannon
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN; and
| | - Liming Luan
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN; and
| | - Antonio Hernandez
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN; and
| | - Tazeen K Patil
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN; and
| | - David L Williams
- Center for Inflammation, Infectious Disease and Immunity, Department of Surgery, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN
| | - Edward R Sherwood
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN; and
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19
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Dendritic cells maturation facilitated by group-adjustable lipopolysaccharide analogues synthesized via RAFT polymerization. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.12.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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20
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Rocha-Gomes A, Teixeira AE, de Oliveira DG, Santiago CMO, da Silva AA, Riul TR, Lacerda ACR, Mendonça VA, Rocha-Vieira E, Leite HR. LPS tolerance prevents anxiety-like behavior and amygdala inflammation of high-fat-fed dams' adolescent offspring. Behav Brain Res 2021; 411:113371. [PMID: 34019914 DOI: 10.1016/j.bbr.2021.113371] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 05/15/2021] [Accepted: 05/15/2021] [Indexed: 02/04/2023]
Abstract
Maternal high-fat diets (HFD) can generate inflammation in the offspring's amygdala, which can lead to anxiety-like behaviors. Conversely, lipopolysaccharide (LPS) tolerance can reduce neuroinflammation in the offspring caused by maternal high-fat diets. This study evaluated the combination of LPS tolerance and high-fat maternal diet on amygdala's inflammatory parameters and the anxiety-like behavior in adolescent offspring. Female pregnant Wistar rats received randomly a standard diet or a high-fat diet during gestation and lactation. On gestation days 8, 10, and 12, half of the females in each group were intraperitonially injected with LPS (0.1 mg.kg-1). After weaning, the male offspring (n = 96) were placed in individual boxes in standard conditions, and when 6 weeks-old, the animals underwent: Open-Field, Light/Dark Box, Elevated Plus-Maze, and Rotarod tests. When 50 days-old the offspring were euthanized and the amygdala removed for cytokine and redox status analysis. The offspring in the HFD group showed lower amygdala IL-10 levels, high IL-6/IL-10 ratio, and anxiety-like behaviors. These effects were attenuated in the HFD offspring submitted to LPS tolerance, which showed an anti-inflammatory compensatory response in the amygdala. Also, this group showed a higher activity of the enzyme catalase in the amygdala. In addition, receiving the combination of LPS tolerance and maternal HFD did not lead to anxiety-like behavior in the offspring. The results suggest that LPS tolerance attenuated amygdala inflammation through an anti-inflammatory compensatory response besides preventing anxiety-like behavior caused by the high-fat maternal diet.
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Affiliation(s)
- Arthur Rocha-Gomes
- Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil; Laboratório de Nutrição Experimental - LabNutrex - Departamento de Nutrição, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
| | - Amanda Escobar Teixeira
- Laboratório de Nutrição Experimental - LabNutrex - Departamento de Nutrição, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
| | - Dalila Gomes de Oliveira
- Laboratório de Nutrição Experimental - LabNutrex - Departamento de Nutrição, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
| | - Camilla Mainy Oliveira Santiago
- Laboratório de Nutrição Experimental - LabNutrex - Departamento de Nutrição, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil; Programa de Pós-Graduação em Ciências da Nutrição, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
| | - Alexandre Alves da Silva
- Laboratório de Nutrição Experimental - LabNutrex - Departamento de Nutrição, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
| | - Tania Regina Riul
- Laboratório de Nutrição Experimental - LabNutrex - Departamento de Nutrição, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil; Programa de Pós-Graduação em Ciências da Nutrição, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
| | - Ana Cristina Rodrigues Lacerda
- Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
| | - Vanessa Amaral Mendonça
- Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
| | - Etel Rocha-Vieira
- Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil; Faculdade de Medicina do Campus JK, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
| | - Hércules Ribeiro Leite
- Programa de Pós-Graduação Multicêntrico em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil; Programa de Pós Graduação em Ciências da Reabilitação, Universidade Federal de Minas Gerais, Diamantina, MG, Brazil.
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21
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Park C, Lee H, Kwon CY, Kim GY, Jeong JW, Kim SO, Choi SH, Jeong SJ, Noh JS, Choi YH. Loganin Inhibits Lipopolysaccharide-Induced Inflammation and Oxidative Response through the Activation of the Nrf2/HO-1 Signaling Pathway in RAW264.7 Macrophages. Biol Pharm Bull 2021; 44:875-883. [PMID: 34078820 DOI: 10.1248/bpb.b21-00176] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Inflammation caused by the excessive secretion of inflammatory mediators in abnormally activated macrophages promotes many diseases along with oxidative stress. Loganin, a major iridoid glycoside isolated from Cornus officinalis, has recently been reported to exhibit anti-inflammatory and antioxidant effects, whereas the underlying mechanism has not yet been fully clarified. Therefore, the aim of the present study is to investigate the effect of loganin on inflammation and oxidative stress in lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages. Our results indicated that loganin treatment markedly attenuated the LPS-mediated phagocytic activity and release of nitric oxide (NO) and prostaglandin E2, which was associated with decreased the expression of inducible NO synthase and cyclooxygenase-2. In addition, loganin suppressed the expression and their extracellular secretion of LPS-induced pro-inflammatory cytokines, such as tumor necrosis factor-α and interleukin-1β. Furthermore, loganin abolished reactive oxygen species (ROS) generation, and promoted the activation of nuclear factor-E2-related factor 2 (Nrf2) and the expression of heme oxygenase-1 (HO-1) in LPS-stimulated macrophages. However, zinc protoporphyrin, a selective HO-1 inhibitor, reversed the loganin-mediated suppression of pro-inflammatory cytokines in LPS-treated macrophages. In conclusion, our findings suggest that the upregulation of the Nrf2/HO-1 signaling pathway is concerned at least in the protective effect of loganin against LPS-mediated inflammatory and oxidative stress, and that loganin can be a potential functional agent to prevent inflammatory and oxidative damage.
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Affiliation(s)
- Cheol Park
- Division of Basic Sciences, College of Liberal Studies, Dong-eui University
| | - Hyesook Lee
- Anti-Aging Research Center, Dong-eui University.,Department of Biochemistry, Dong-eui University College of Korean Medicine
| | - Chan-Young Kwon
- Department of Oriental Neuropsychiatry, Dong-eui University College of Korean Medicine
| | - Gi-Young Kim
- Laboratory of Immunobiology, Department of Marine Life Sciences, Jeju National University
| | - Jin-Woo Jeong
- Nakdonggang National Institute of Biological Resources
| | - Sung Ok Kim
- Department of Food Science & Biotechnology, College of Engineering, Kyungsung University
| | | | - Soon-Jeong Jeong
- Department of Dental Hygiene, College of Health Science, Youngsan University
| | - Jeong Sook Noh
- Department of Food Science & Nutrition, Tongmyong University
| | - Yung Hyun Choi
- Anti-Aging Research Center, Dong-eui University.,Department of Biochemistry, Dong-eui University College of Korean Medicine
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22
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Kwon DH, Kim GY, Cha HJ, Kim S, Kim HS, Hwang HJ, Choi YH. Nargenicin A1 attenuates lipopolysaccharide-induced inflammatory and oxidative response by blocking the NF-κB signaling pathway. EXCLI JOURNAL 2021; 20:968-982. [PMID: 34267609 PMCID: PMC8278209 DOI: 10.17179/excli2021-3506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 05/26/2021] [Indexed: 12/04/2022]
Abstract
Inflammation caused by the excessive production of pro-inflammatory mediators and cytokines in abnormally activated macrophages promotes the initiation and progression of many diseases along with oxidative stress. Previous studies have suggested that nargenicin A1, an antibacterial macrolide isolated from Nocardia sp. may be a potential treatment for inflammatory responses and oxidative stress, but the detailed mechanisms are still not well studied. In this study, we investigated the inhibitory effect of nargenicin A1 on inflammatory and oxidative stress in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages and zebrafish (Danio rerio) models. Our results indicated that nargenicin A1 treatment significantly inhibited LPS-induced release of pro-inflammatory mediators including nitric oxide (NO) and prostaglandin E2, which was associated with decreased inducible NO synthase and cyclooxygenase-2 expression. In addition, nargenicin A1 attenuated the LPS-induced expression of pro-inflammatory cytokines, such as tumor necrosis factor (TNF)-α, interleukin (IL)-1β, IL-6, and monocyte chemotactic protein-1, reducing their extracellular secretion. Nargenicin A1 also suppressed LPS-induced generation of reactive oxygen species. Moreover, nargenicin A1 abolished the LPS-mediated nuclear translocation of nuclear factor-kappa B (NF-κB) and the degradation of inhibitor IκB-α, indicating that nargenicin A1 exhibited anti-inflammatory effects by inhibiting the NF-κB signaling pathway. Furthermore, nargenicin A1 showed strong protective effects against NO and ROS production in LPS-injected zebrafish larvae. In conclusion, our findings suggest that nargenicin A1 ameliorates LPS-induced anti-inflammatory and antioxidant effects by downregulating the NF-κB signaling pathway, and that nargenicin A1 can be a potential functional agent to prevent inflammatory- and oxidative-mediated damage.
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Affiliation(s)
- Da Hye Kwon
- Anti-Aging Research Center, Dong-eui University, Busan, Republic of Korea.,Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan, Republic of Korea
| | - Gi-Young Kim
- Department of Marine Life Science, School of Marine Biomedical Sciences, Jeju National University, Jeju, Republic of Korea
| | - Hee-Jae Cha
- Department of Parasitology and Genetics, College of Medicine, Kosin University, Busan, Republic of Korea
| | - Suhkmann Kim
- Department of Chemistry, College of Natural Sciences, Pusan National University, Busan, Republic of Korea
| | - Heui-Soo Kim
- Department of Biological Sciences, College of Natural Sciences, Pusan National University, Busan, Republic of Korea
| | - Hye-Jin Hwang
- Department of Food and Nutrition, College of Nursing, Healthcare Sciences & Human Ecology, Dong-eui University, Busan, Republic of Korea
| | - Yung Hyun Choi
- Anti-Aging Research Center, Dong-eui University, Busan, Republic of Korea.,Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan, Republic of Korea
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23
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Park C, Cha HJ, Lee H, Kim GY, Choi YH. The regulation of the TLR4/NF-κB and Nrf2/HO-1 signaling pathways is involved in the inhibition of lipopolysaccharide-induced inflammation and oxidative reactions by morroniside in RAW 264.7 macrophages. Arch Biochem Biophys 2021; 706:108926. [PMID: 34029560 DOI: 10.1016/j.abb.2021.108926] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 05/16/2021] [Accepted: 05/17/2021] [Indexed: 02/07/2023]
Abstract
Morroniside, a major iridoid glycoside isolated from Cornus officinalis, has a variety of beneficial pharmacological properties. Although morroniside has recently been reported to exhibit anti-inflammatory and antioxidant effects, the detailed mechanism has not yet been fully elucidated. In this study, we investigated the inhibitory effect of morroniside on inflammatory and oxidative stress activated by lipopolysaccharide (LPS) in RAW 264.7 macrophages. Our results indicated that morroniside pretreatment significantly inhibited the LPS-induced phagocytic activity and release of pro-inflammatory factors, which was associated with blocking the expression of their regulatory genes. Morroniside also markedly suppressed the expression of myeloid differentiation factor 88 as well as Toll-like receptor 4 (TLR4), and attenuated the translocation of nuclear factor-κB (NF-κB) to the nucleus in LPS-treated RAW 264.7 macrophages. Furthermore, morroniside prevented the binding of LPS to the TLR4 on the cell surface. In addition, morroniside abolished reactive oxygen species (ROS) generation, and enhanced the expression of heme oxygenase-1 (HO-1) following activation of nuclear factor-E2-related factor 2 (Nrf2) in LPS-stimulated RAW 264.7 macrophages. However, zinc protoporphyrin, a specific inhibitor of HO-1, reversed the morroniside-mediated inhibition of inflammatory response in LPS-treated RAW 264.7 macrophages. In conclusion, our findings suggest that morroniside exerts LPS-induced anti-inflammatory and antioxidant effects by targeting the TLR4/NF-κB and Nrf2/HO-1 signaling pathways in RAW 264.7 macrophages. Taken together, our findings suggest that morroniside interacted structurally and electrochemically with TLR4/MD2 complex, consequently can be a potential functional agent to prevent inflammatory and oxidative damage.
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Affiliation(s)
- Cheol Park
- Division of Basic Sciences, College of Liberal Studies, Dong-eui University, Busan, 47340, Republic of Korea
| | - Hee-Jae Cha
- Department of Parasitology and Genetics, College of Medicine, Kosin University, Busan, 49104, Republic of Korea
| | - Hyesook Lee
- Anti-Aging Research Center, Dong-eui University, Busan, 47340, Republic of Korea; Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan, 47227, Republic of Korea
| | - Gi-Young Kim
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju, 63243, Republic of Korea
| | - Yung Hyun Choi
- Anti-Aging Research Center, Dong-eui University, Busan, 47340, Republic of Korea; Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan, 47227, Republic of Korea.
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24
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Ji SY, Cha HJ, Molagoda IMN, Kim MY, Kim SY, Hwangbo H, Lee H, Kim GY, Kim DH, Hyun JW, Kim HS, Kim S, Jin CY, Choi YH. Suppression of Lipopolysaccharide-Induced Inflammatory and Oxidative Response by 5-Aminolevulinic Acid in RAW 264.7 Macrophages and Zebrafish Larvae. Biomol Ther (Seoul) 2021; 29:685-696. [PMID: 33820881 PMCID: PMC8551728 DOI: 10.4062/biomolther.2021.030] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/11/2021] [Accepted: 03/15/2021] [Indexed: 11/05/2022] Open
Abstract
In this study, we investigated the inhibitory effect of 5-aminolevulinic acid (ALA), a heme precursor, on inflammatory and oxidative stress activated by lipopolysaccharide (LPS) in RAW 264.7 macrophages by estimating nitric oxide (NO), prostaglandin E2 (PGE2), cytokines, and reactive oxygen species (ROS). We also evaluated the molecular mechanisms through analysis of the expression of their regulatory genes, and further evaluated the anti-inflammatory and antioxidant efficacy of ALA against LPS in the zebrafish model. Our results indicated that ALA treatment significantly attenuated the LPS-induced release of pro-inflammatory mediators including NO and PGE2, which was associated with decreased inducible NO synthase and cyclooxygenase-2 expression. ALA also inhibited the LPS-induced expression of pro-inflammatory cytokines, such as tumor necrosis factor (TNF)-α, interleukin (IL)-1β, and IL-6, reducing their extracellular secretion. Additionally, ALA abolished ROS generation, improved the mitochondrial mass, and enhanced the expression of heme oxygenase-1 (HO-1) and the activation of nuclear translocation of nuclear factor-E2-related factor 2 (Nrf2) in LPS-stimulated RAW 264.7 macrophages. However, zinc protoporphyrin, a specific inhibitor of HO-1, reversed the ALA-mediated inhibition of pro-inflammatory cytokines production and activation of mitochondrial function in LPS-treated RAW 264.7 macrophages. Furthermore, ALA significantly abolished the expression of LPS-induced pro-inflammatory mediators and cytokines, and showed strong protective effects against NO and ROS production in zebrafish larvae. In conclusion, our findings suggest that ALA exerts LPS-induced anti-inflammatory and antioxidant effects by upregulating the Nrf2/HO-1 signaling pathway, and that ALA can be a potential functional agent to prevent inflammatory and oxidative damage.
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Affiliation(s)
- Seon Yeong Ji
- Anti-Aging Research Center, Dong-eui University, Busan 47340, Republic of Korea.,Department of Biochemistry, College of Korean Medicine, Dong-eui University, Busan 47227, Republic of Korea
| | - Hee-Jae Cha
- Department of Parasitology and Genetics, College of Medicine, Kosin University, Busan 49104, Republic of Korea
| | | | - Min Yeong Kim
- Anti-Aging Research Center, Dong-eui University, Busan 47340, Republic of Korea.,Department of Biochemistry, College of Korean Medicine, Dong-eui University, Busan 47227, Republic of Korea
| | - So Young Kim
- Anti-Aging Research Center, Dong-eui University, Busan 47340, Republic of Korea.,Department of Biochemistry, College of Korean Medicine, Dong-eui University, Busan 47227, Republic of Korea
| | - Hyun Hwangbo
- Anti-Aging Research Center, Dong-eui University, Busan 47340, Republic of Korea.,Department of Biochemistry, College of Korean Medicine, Dong-eui University, Busan 47227, Republic of Korea
| | - Hyesook Lee
- Anti-Aging Research Center, Dong-eui University, Busan 47340, Republic of Korea.,Department of Biochemistry, College of Korean Medicine, Dong-eui University, Busan 47227, Republic of Korea
| | - Gi-Young Kim
- Department of Marine Life Sciences, Jeju National University, Jeju 63243, Republic of Korea
| | - Do-Hyung Kim
- Department of Aquatic Life Medicine, Pukyong National University, Busan 48513, Republic of Korea
| | - Jin Won Hyun
- Department of Biochemistry, College of Medicine, Jeju National University, Jeju 63243, Republic of Korea
| | - Heui-Soo Kim
- Department of Biological Sciences, Pusan National University, Busan 46241, Republic of Korea
| | - Suhkmann Kim
- Department of Chemistry, Pusan National University, Busan 46241, Republic of Korea
| | - Cheng-Yun Jin
- School of Pharmaceutical Sciences, Zhengzhou University, Henan 450001, China
| | - Yung Hyun Choi
- Anti-Aging Research Center, Dong-eui University, Busan 47340, Republic of Korea.,Department of Biochemistry, College of Korean Medicine, Dong-eui University, Busan 47227, Republic of Korea
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25
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Li C, Wang J, Zhao M, Zhang S, Zhang Y. Toll‐like receptor 4 antagonist FP7 alleviates lipopolysaccharide‐induced septic shock via NF‐kB signaling pathway. Chem Biol Drug Des 2021; 97:1151-1157. [PMID: 33638265 DOI: 10.1111/cbdd.13837] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 01/23/2021] [Accepted: 02/21/2021] [Indexed: 12/12/2022]
Affiliation(s)
- Chao Li
- Department of Emergency Xingtai People’s Hospital of Hebei Province Xingtai China
| | - Junhui Wang
- Department of Emergency Xingtai People’s Hospital of Hebei Province Xingtai China
| | - Mailiang Zhao
- Department of Emergency Xingtai People’s Hospital of Hebei Province Xingtai China
| | - Sheng Zhang
- Department of Emergency Xingtai People’s Hospital of Hebei Province Xingtai China
| | - Yanwei Zhang
- Department of Emergency Xingtai People’s Hospital of Hebei Province Xingtai China
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26
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Owen AM, Fults JB, Patil NK, Hernandez A, Bohannon JK. TLR Agonists as Mediators of Trained Immunity: Mechanistic Insight and Immunotherapeutic Potential to Combat Infection. Front Immunol 2021; 11:622614. [PMID: 33679711 PMCID: PMC7930332 DOI: 10.3389/fimmu.2020.622614] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 12/24/2020] [Indexed: 12/18/2022] Open
Abstract
Despite advances in critical care medicine, infection remains a significant problem that continues to be complicated with the challenge of antibiotic resistance. Immunocompromised patients are highly susceptible to development of severe infection which often progresses to the life-threatening condition of sepsis. Thus, immunotherapies aimed at boosting host immune defenses are highly attractive strategies to ward off infection and protect patients. Recently there has been mounting evidence that activation of the innate immune system can confer long-term functional reprogramming whereby innate leukocytes mount more robust responses upon secondary exposure to a pathogen for more efficient clearance and host protection, termed trained immunity. Toll-like receptor (TLR) agonists are a class of agents which have been shown to trigger the phenomenon of trained immunity through metabolic reprogramming and epigenetic modifications which drive profound augmentation of antimicrobial functions. Immunomodulatory TLR agonists are also highly beneficial as vaccine adjuvants. This review provides an overview on TLR signaling and our current understanding of TLR agonists which show promise as immunotherapeutic agents for combating infection. A brief discussion on our current understanding of underlying mechanisms is also provided. Although an evolving field, TLR agonists hold strong therapeutic potential as immunomodulators and merit further investigation for clinical translation.
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Affiliation(s)
- Allison M Owen
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Jessica B Fults
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States.,University of Texas Southwestern Medical School, Dallas, TX, United States
| | - Naeem K Patil
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Antonio Hernandez
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Julia K Bohannon
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States.,Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, United States
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McBride MA, Patil TK, Bohannon JK, Hernandez A, Sherwood ER, Patil NK. Immune Checkpoints: Novel Therapeutic Targets to Attenuate Sepsis-Induced Immunosuppression. Front Immunol 2021; 11:624272. [PMID: 33613563 PMCID: PMC7886986 DOI: 10.3389/fimmu.2020.624272] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 12/16/2020] [Indexed: 12/11/2022] Open
Abstract
Sepsis is a leading cause of death in intensive care units and survivors develop prolonged immunosuppression and a high incidence of recurrent infections. No definitive therapy exists to treat sepsis and physicians rely on supportive care including antibiotics, intravenous fluids, and vasopressors. With the rising incidence of antibiotic resistant microbes, it is becoming increasingly critical to discover novel therapeutics. Sepsis-induced leukocyte dysfunction and immunosuppression is recognized as an important contributor towards increased morbidity and mortality. Pre-clinical and clinical studies show that specific cell surface inhibitory immune checkpoint receptors and ligands including PD-1, PD-L1, CTLA4, BTLA, TIM3, OX40, and 2B4 play important roles in the pathophysiology of sepsis by mediating a fine balance between host immune competency and immunosuppression. Pre-clinical studies targeting the inhibitory effects of these immune checkpoints have demonstrated reversal of leukocyte dysfunction and improved host resistance of infection. Measurement of immune checkpoint expression on peripheral blood leukocytes may serve as a means of stratifying patients to direct individualized therapy. This review focuses on advances in our understanding of the role of immune checkpoints in the host response to infections, and the potential clinical application of therapeutics targeting the inhibitory immune checkpoint pathways for the management of septic patients.
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Affiliation(s)
- Margaret A. McBride
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Tazeen K. Patil
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Julia K. Bohannon
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, United States
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Antonio Hernandez
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Edward R. Sherwood
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, United States
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Naeem K. Patil
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
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Association between disease-related malnutrition and innate immunity gene expression in critically ill patients at intensive care unit admission. Cent Eur J Immunol 2021; 45:414-424. [PMID: 33658890 PMCID: PMC7882404 DOI: 10.5114/ceji.2020.103393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 10/05/2020] [Indexed: 11/17/2022] Open
Abstract
The aim of the study was to analyse the relationship between nutritional disorders and the expression of innate antibacterial response genes in patients admitted to the intensive care unit (ICU). In 46 patients with severe malnutrition and life-threatening surgical complications, nutritional status tests were performed on the basis of the NRS 2002 (Nutritional Risk Screening) scale, cytokine, albumin, C-reactive protein concentrations, anthropometric tests, and body composition analysis. Concurrently, the expression of Toll-like receptor 2, NOD1, TRAF6, and HMGB1 genes was determined in peripheral blood leukocytes at the mRNA level using real-time polymerase chain reaction. It was found that both the nutritional status and the gene expression changed depending on the group of patients studied (including the group of survivors vs. non-survivors). Significant correlations were found between the results of routine tests used in the diagnostics of malnutrition (including NRS 2002, resistance, reactance, phase angle, excess of extracellular water) and the expression of the studied genes. Moreover, the expression of TRAF6 and HMGB1 genes correlated with the Acute Physiology and Chronic Health Evaluation II scale and the age of the patients. The results of the research suggest that the expression of innate antibacterial response genes may be a new diagnostic tool complementing the assessment of nutritional disorders in surgical patients admitted to the ICU. These tests may be helpful in providing more accurate diagnostics of the genetic effects of malnutrition and in the monitoring of patients for whom nutritional treatment is planned to support the functions of the immune system, thereby increasing the effectiveness of this type of treatment in the ICU.
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Choi Y, Kwon D, Park C, Lee H, Hong S, Kim GY, Cha HJ, Kim S, Kim HS, Hwang HJ. Ethanol extract of Chondracanthus tenellus (Harvey) Hommersand attenuates lipopolysaccharide-induced inflammatory and oxidative response by blocking the NF-κB, MAPKs, and PI3K/Akt signaling pathways. Asian Pac J Trop Biomed 2021. [DOI: 10.4103/2221-1691.326099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Park C, Lee H, Hong S, Molagoda IMN, Jeong JW, Jin CY, Kim GY, Choi SH, Hong SH, Choi YH. Inhibition of Lipopolysaccharide-Induced Inflammatory and Oxidative Responses by Trans-cinnamaldehyde in C2C12 Myoblasts. Int J Med Sci 2021; 18:2480-2492. [PMID: 34104079 PMCID: PMC8176176 DOI: 10.7150/ijms.59169] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Accepted: 04/12/2021] [Indexed: 02/06/2023] Open
Abstract
Background: Trans-cinnamaldehyde (tCA), a bioactive component found in Cinnamomum cassia, has been reported to exhibit anti-inflammatory and antioxidant effects, but its efficacy in muscle cells has yet to be found. In this study, we investigated the inhibitory effect of tCA on inflammatory and oxidative stress induced by lipopolysaccharide (LPS) in C2C12 mouse skeletal myoblasts. Methods: To investigate the anti-inflammatory and antioxidant effects of tCA in LPS-treated C2C12 cells, we measured the levels of pro-inflammatory mediator, cytokines, and reactive oxygen species (ROS). To elucidate the mechanism underlying the effect of tCA, the expression of genes involved in the expression of inflammatory and oxidative regulators was also investigated. We further evaluated the anti-inflammatory and antioxidant efficacy of tCA against LPS in the zebrafish model. Results: tCA significantly inhibited the LPS-induced release of pro-inflammatory mediators and cytokines, which was associated with decreased expression of their regulatory genes. tCA also suppressed the expression of Toll-like receptor 4 (TLR4) and myeloid differentiation factor, and attenuated the nuclear translocation of nuclear factor-kappa B (NF-κB) and the binding of LPS to TLR4 on the cell surface in LPS-treated C2C12 cells. Furthermore, tCA abolished LPS-induced generation of ROS and expression levels of ROS producing enzymes, NADPH oxidase 1 (NOX1) and NOX2. However, tCA enhanced the activation of nuclear translocation of nuclear factor-E2-related factor 2 (Nrf2) and the expression of heme oxygenase-1 (HO-1) in LPS-stimulated C2C12 myoblasts. In addition, tCA showed strong protective effects against NO and ROS production in LPS-injected zebrafish larvae. Conclusions: Our findings suggest that tCA exerts its inhibitory ability against LPS-induced inflammatory and antioxidant stress in C2C12 myoblasts by targeting the TLR4/NF-κB, which might be mediated by the NOXs and Nrf2/HO-1 pathways.
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Affiliation(s)
- Cheol Park
- Division of Basic Sciences, College of Liberal Studies, Dong-Eui University, Busan 47340, Republic of Korea
| | - Hyesook Lee
- Anti-Aging Research Center, Dong-eui University, Busan 47340, Republic of Korea.,Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan 47227, Republic of Korea
| | - Suhyun Hong
- Anti-Aging Research Center, Dong-eui University, Busan 47340, Republic of Korea.,Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan 47227, Republic of Korea
| | - Ilandarage Menu Neelaka Molagoda
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju 63243, Republic of Korea
| | - Jin-Woo Jeong
- Nakdonggang National Institute of Biological Resources, Sangju 37242, Republic of Korea
| | - Cheng-Yun Jin
- School of Pharmaceutical Sciences, Zhengzhou University, Henan 450001, China
| | - Gi-Young Kim
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju 63243, Republic of Korea
| | - Sung Hyun Choi
- Department of System Management, Korea Lift College, Geochang 50141, Republic of Korea
| | - Sang Hoon Hong
- Department of Internal Medicine, Dong-eui University College of Korean Medicine, Busan 47227, Republic of Korea
| | - Yung Hyun Choi
- Anti-Aging Research Center, Dong-eui University, Busan 47340, Republic of Korea.,Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan 47227, Republic of Korea
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McBride MA, Owen AM, Stothers CL, Hernandez A, Luan L, Burelbach KR, Patil TK, Bohannon JK, Sherwood ER, Patil NK. The Metabolic Basis of Immune Dysfunction Following Sepsis and Trauma. Front Immunol 2020; 11:1043. [PMID: 32547553 PMCID: PMC7273750 DOI: 10.3389/fimmu.2020.01043] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 04/30/2020] [Indexed: 12/13/2022] Open
Abstract
Critically ill, severely injured and high-risk surgical patients are vulnerable to secondary infections during hospitalization and after hospital discharge. Studies show that the mitochondrial function and oxidative metabolism of monocytes and macrophages are impaired during sepsis. Alternatively, treatment with microbe-derived ligands, such as monophosphoryl lipid A (MPLA), peptidoglycan, or β-glucan, that interact with toll-like receptors and other pattern recognition receptors on leukocytes induces a state of innate immune memory that confers broad-spectrum resistance to infection with common hospital-acquired pathogens. Priming of macrophages with MPLA, CPG oligodeoxynucleotides (CpG ODN), or β-glucan induces a macrophage metabolic phenotype characterized by mitochondrial biogenesis and increased oxidative metabolism in parallel with increased glycolysis, cell size and granularity, augmented phagocytosis, heightened respiratory burst functions, and more effective killing of microbes. The mitochondrion is a bioenergetic organelle that not only contributes to energy supply, biosynthesis, and cellular redox functions but serves as a platform for regulating innate immunological functions such as production of reactive oxygen species (ROS) and regulatory intermediates. This review will define current knowledge of leukocyte metabolic dysfunction during and after sepsis and trauma. We will further discuss therapeutic strategies that target leukocyte mitochondrial function and might have value in preventing or reversing sepsis- and trauma-induced immune dysfunction.
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Affiliation(s)
- Margaret A. McBride
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Allison M. Owen
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Cody L. Stothers
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Antonio Hernandez
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Liming Luan
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Katherine R. Burelbach
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Tazeen K. Patil
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Julia K. Bohannon
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, United States
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Edward R. Sherwood
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, United States
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Naeem K. Patil
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
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32
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Heat-Clearing Chinese Medicines in Lipopolysaccharide-Induced Inflammation. Chin J Integr Med 2020; 26:552-559. [DOI: 10.1007/s11655-020-3256-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/02/2019] [Indexed: 01/20/2023]
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