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Garbis DVO, Fortes TS, Brito JM, Silva LDM, Trovão LDO, Oliveira AS, Alves PCS, Vale AAM, Reis AS, Azevedo-Santos APS, Maciel MCG, Guerra RNM, Abreu AG, Silva LA, Berretta AA, Nascimento FRF. Prophylactic use of standardized extract of propolis of Apis mellifera (EPP-AF®) reduces lung inflammation and improves survival in experimental lethal sepsis. JOURNAL OF ETHNOPHARMACOLOGY 2024; 331:118294. [PMID: 38729541 DOI: 10.1016/j.jep.2024.118294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/22/2024] [Accepted: 05/03/2024] [Indexed: 05/12/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Sepsis poses one of the biggest public health problems, necessitating the search for new therapeutic alternatives. For centuries, propolis has been widely used in folk medicine to treat various inflammatory and infectious diseases. Given its extensive use, it has excellent potential as an adjuvant treatment for patients with sepsis. OBJECTIVE This study evaluated prophylactic treatment with standardized propolis extract (EPP-AF®) and followed the prognosis of sepsis induced by ligation and cecal ligation and puncture (CLP). METHODS Initially, for survival assessment, Swiss mice were separated into five groups: Sham (false operated), control (PBS), ATB (received antibiotic, 8 mg/kg), P10 (received EPP-AF®, 10 mg/kg), and P100 (received EPP-AF®, 100 mg/kg). The animals received PBS, antibiotic, or EPP-AF® by the subcutaneous route 6 h before the CLP procedure. Animal survival was assessed every 12 h for five days when all of them were euthanized. RESULTS We show that the treatment with EPP-AF® significantly increased the life expectancy of animals with sepsis compared to the control group. Interestingly, prophylactic treatment with EPP-AF® showed no effect on the number of colony-forming units in the peritoneum, blood, or lung. However, there was a decrease in cellular influx in the peritoneum. This alteration was unrelated to the number of bone marrow cells or the differential counting of peripheral blood cells. The coagulogram remained unchanged, including the number of platelets and prothrombin time-activated partial thromboplastin time. However, the inflammatory infiltrate and bleeding in the lung tissue were lower in the animals that received EPP-AF®. CONCLUSION Thus, it was possible to conclude that prophylactic treatment with EPP-AF® preserved the lung parenchyma, resulting in an increased lifespan of mice with sepsis. It can be a helpful adjuvant in prophylactic treatment with antibiotics in presurgical conditions.
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Affiliation(s)
- Dimitrius V O Garbis
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil; Laboratório de Imunofisiologia, Universidade Federal do Maranhão, São Luís, Brazil
| | - Thiare S Fortes
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil; Laboratório de Imunofisiologia, Universidade Federal do Maranhão, São Luís, Brazil
| | - Jefferson M Brito
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil; Laboratório de Patologia e Imunoparasitologia (LPI), Universidade Federal do Maranhão, São Luís, Maranhão, Brazil
| | - Luis Douglas M Silva
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil; Laboratório de Patologia e Imunoparasitologia (LPI), Universidade Federal do Maranhão, São Luís, Maranhão, Brazil
| | - Liana de O Trovão
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Aluisio S Oliveira
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil; Laboratório de Imunofisiologia, Universidade Federal do Maranhão, São Luís, Brazil
| | - Patrícia C S Alves
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil; Laboratório de Imunofisiologia, Universidade Federal do Maranhão, São Luís, Brazil
| | - André A M Vale
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil; Laboratório de Imunologia Aplicada ao Câncer (LIAC), Centro de Ciências Biológicas e da Saúde, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil
| | - Aramys S Reis
- Laboratório de Fisiopatologia e Investigação Terapêutica (LAFIT), Centro de Ciências de Imperatriz, Universidade Federal do Maranhão, Imperatriz, Maranhão, Brazil; Programa de Pós-Graduação em Saúde e Tecnologia, Universidade Federal do Maranhão, Imperatriz, Maranhão, Brazil
| | - Ana Paula S Azevedo-Santos
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil; Laboratório de Imunologia Aplicada ao Câncer (LIAC), Centro de Ciências Biológicas e da Saúde, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil
| | - Marcia C G Maciel
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil; Programa de Pós-Graduação em Saúde e Tecnologia, Universidade Federal do Maranhão, Imperatriz, Maranhão, Brazil; Departmento de Biologia Celular, Universidade de Brasília, Brasília, Distrito Federal, Brazil
| | - Rosane N M Guerra
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil; Laboratório de Imunofisiologia, Universidade Federal do Maranhão, São Luís, Brazil
| | - Afonso G Abreu
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil; Programa de Pós-Graduação em Biologia Microbiana, Universidade CEUMA, São Luís, Maranhão, Brazil
| | - Lucilene A Silva
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil; Laboratório de Patologia e Imunoparasitologia (LPI), Universidade Federal do Maranhão, São Luís, Maranhão, Brazil
| | - Andresa A Berretta
- Laboratório de Pesquisa, Desenvolvimento & Inovação, Apis Flora Indl. Coml. Ltda., Ribeirão Preto, São Paulo, Brazil
| | - Flávia R F Nascimento
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Maranhão, São Luís, Maranhão, Brazil; Laboratório de Imunofisiologia, Universidade Federal do Maranhão, São Luís, Brazil.
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Al Madhoun A. MicroRNA-630: A potential guardian against inflammation in diabetic kidney disease. World J Diabetes 2024; 15:1837-1841. [DOI: 10.4239/wjd.v15.i9.1837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 05/20/2024] [Accepted: 06/17/2024] [Indexed: 08/27/2024] Open
Abstract
In this editorial, we comment on the article by Wu et al published “MicroRNA-630 alleviates inflammatory reactions in rats with diabetic kidney disease by targeting toll-like receptor 4”. Diabetic kidney disease (DKD) stands as a significant complication occurring from diabetes mellitus, which contributes substantially to the morbidity and mortality rates worldwide. Renal tubular epithelial cell da-mage, often accompanied by inflammatory responses and mesenchymal trans-differentiation, plays a pivotal role in the progression of DKD. Despite extensive research, the intricate molecular mechanisms underlying these processes remain to be determined. Wu et al remarkable work identifies microRNA-630 (miR-630) as an emerging potential regulator of cell migration, apoptosis, and autophagy, prompting investigation into its association with DKD pathogenesis. This study endeavors to elucidate the impact of miR-630 on TEC injury and the inflammatory response in DKD rats. The role of miR-630 in human DKD will be of interest for future studies.
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Affiliation(s)
- Ashraf Al Madhoun
- Department of Genetics and Bioinformatics, Dasman Diabetes Institute, Dasman 15400, Kuwait
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3
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Matuszewska J, Krawiec A, Radziemski A, Uruski P, Tykarski A, Mikuła-Pietrasik J, Książek K. Alterations of receptors and insulin-like growth factor binding proteins in senescent cells. Eur J Cell Biol 2024; 103:151438. [PMID: 38945074 DOI: 10.1016/j.ejcb.2024.151438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 06/24/2024] [Accepted: 06/25/2024] [Indexed: 07/02/2024] Open
Abstract
The knowledge about cellular senescence expands dynamically, providing more and more conclusive evidence of its triggers, mechanisms, and consequences. Senescence-associated secretory phenotype (SASP), one of the most important functional traits of senescent cells, is responsible for a large extent of their context-dependent activity. Both SASP's components and signaling pathways are well-defined. A literature review shows, however, that a relatively underinvestigated aspect of senescent cell autocrine and paracrine activity is the change in the production of proteins responsible for the reception and transmission of SASP signals, i.e., receptors and binding proteins. For this reason, we present in this article the current state of knowledge regarding senescence-associated changes in cellular receptors and insulin-like growth factor binding proteins. We also discuss the role of these alterations in senescence induction and maintenance, pro-cancerogenic effects of senescent cells, and aging-related structural and functional malfunctions.
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Affiliation(s)
- Julia Matuszewska
- Poznan University of Medical Sciences, Department of Pathophysiology of Ageing and Civilization Diseases, Święcickiego 4 Str., Poznań 60-781, Poland
| | - Adrianna Krawiec
- Poznan University of Medical Sciences, Department of Pathophysiology of Ageing and Civilization Diseases, Święcickiego 4 Str., Poznań 60-781, Poland
| | - Artur Radziemski
- Poznan University of Medical Sciences, Department of Hypertensiology, Długa 1/2 Str., Poznań 61-848, Poland
| | - Paweł Uruski
- Poznan University of Medical Sciences, Department of Hypertensiology, Długa 1/2 Str., Poznań 61-848, Poland
| | - Andrzej Tykarski
- Poznan University of Medical Sciences, Department of Hypertensiology, Długa 1/2 Str., Poznań 61-848, Poland
| | - Justyna Mikuła-Pietrasik
- Poznan University of Medical Sciences, Department of Pathophysiology of Ageing and Civilization Diseases, Święcickiego 4 Str., Poznań 60-781, Poland
| | - Krzysztof Książek
- Poznan University of Medical Sciences, Department of Pathophysiology of Ageing and Civilization Diseases, Święcickiego 4 Str., Poznań 60-781, Poland.
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Rastogi A, Gautam S, Kumar M. Bioinformatic elucidation of conserved epitopes to design a potential vaccine candidate against existing and emerging SARS-CoV-2 variants of concern. Heliyon 2024; 10:e35129. [PMID: 39157328 PMCID: PMC11328099 DOI: 10.1016/j.heliyon.2024.e35129] [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: 09/27/2023] [Revised: 07/22/2024] [Accepted: 07/23/2024] [Indexed: 08/20/2024] Open
Abstract
The COVID-19 pandemic caused by SARS-CoV-2 poses a significant adverse effects on health and economy globally. Due to mutations in genome, COVID-19 vaccine efficacy decreases. We used immuno-informatics to design a Multi epitope vaccine (MEV) candidate for SARS-CoV-2 variants of concern (VOCs). Hence, we predicted binders/epitopes MHC-I, CD8+, MHC-II, CD4+, and CTLs from spike, membrane and envelope proteins of VOCs. In addition, we assessed the conservation of these binders and epitopes across different VOCs. Subsequently, we designed MEV by combining the predicted CTL and CD4+ epitopes from spike protein, peptide linkers, and an adjuvant. Further, we evaluated the binding of MEV candidate against immune receptors namely HLA class I histocompatibility antigen, HLA class II histocompatibility antigen, and TLR4, achieving binding scores of -1265.3, -1330.7, and -1337.9. Molecular dynamics and normal mode analysis revealed stable docking complexes. Moreover, immune simulation suggested MEV candidate elicits both innate and adaptive immune response. We anticipate that this conserved MEV candidate will provide protection from VOCs and emerging strains.
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Affiliation(s)
- Amber Rastogi
- Virology Unit and Bioinformatics Centre, Institute of Microbial Technology, Council of Scientific and Industrial Research (CSIR), Sector 39A, Chandigarh, 160036, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Sakshi Gautam
- Virology Unit and Bioinformatics Centre, Institute of Microbial Technology, Council of Scientific and Industrial Research (CSIR), Sector 39A, Chandigarh, 160036, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Manoj Kumar
- Virology Unit and Bioinformatics Centre, Institute of Microbial Technology, Council of Scientific and Industrial Research (CSIR), Sector 39A, Chandigarh, 160036, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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Teräsjärvi J, Kainulainen L, Peltola V, Mertsola J, Hakanen A, He Q. Genetic polymorphisms of TLR1, TLR2, TLR3 and TLR4 in patients with recurrent or severe infections. Int J Immunogenet 2024; 51:242-251. [PMID: 38706134 DOI: 10.1111/iji.12676] [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: 01/15/2024] [Revised: 03/25/2024] [Accepted: 04/21/2024] [Indexed: 05/07/2024]
Abstract
Toll-like receptors (TLRs) play an important role in innate immunity. Previous studies have shown that single nucleotide polymorphisms (SNPs) in the genes coding for these innate immune molecules can affect susceptibility to and the outcome of certain diseases. The aim of the present study was to examine the clinical relevance of well-studied TLR1-4 SNPs in individuals who are prone to infections. Four functional SNPs, TLR1 rs5743618 (1805C > A, Ser602Ile), TLR2 rs5743708 (2258G > A, Arg753Gln), TLR3 rs3775291 (1234C > T, Leu412Phe) and TLR4 rs4986790 (896A > G, Asp299Gly), were analysed in 155 patients with recurrent respiratory infections (n = 84), severe infections (n = 15) or common variable immunodeficiency (n = 56), and in 262 healthy controls, using the High Resolution Melting Analysis method. Polymorphisms of TLR2 rs5743708 (odds ratio [OR] 3.16; 95% confidence interval [CI] 1.45-6.83, p = .004, ap = .016) and TLR4 rs4986790 (OR 1.8; 95% CI 1.05-3.12, p = .028, ap = .112) were more frequent in patients with recurrent or severe infections than in controls. Interestingly, seven patients were found to carry both variant genotypes of TLR2 and TLR4, whereas none of the control group carried such genotypes (p ≤ .0001). Moreover, TLR2 polymorphism was associated with increased risk for acute otitis media episodes (OR, 3.02; 95% CI 1.41-6.47; p = .012). This study indicates that children and adults who are more prone to recurrent or severe respiratory infections carry one or both variant types of TLR2 and TLR4 more often than control subjects. Genetic variations of TLRs help explain why some children are more susceptible to respiratory infections.
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Affiliation(s)
- Johanna Teräsjärvi
- Institute of Biomedicine, Research Center of Infections and Immunity, University of Turku, Turku, Finland
| | - Leena Kainulainen
- Department of Pediatrics and Adolescent Medicine, Turku University Hospital, Turku, Finland
- Department of Medicine, Turku University Hospital, Turku, Finland
| | - Ville Peltola
- Department of Pediatrics and Adolescent Medicine, Turku University Hospital, Turku, Finland
- InFLAMES Research Flagship Center, University of Turku, Turku, Finland
| | - Jussi Mertsola
- Department of Pediatrics and Adolescent Medicine, Turku University Hospital, Turku, Finland
- InFLAMES Research Flagship Center, University of Turku, Turku, Finland
| | - Antti Hakanen
- InFLAMES Research Flagship Center, University of Turku, Turku, Finland
- Department of Clinical Microbiology, Turku University Hospital, Turku, Finland
| | - Qiushui He
- Institute of Biomedicine, Research Center of Infections and Immunity, University of Turku, Turku, Finland
- InFLAMES Research Flagship Center, University of Turku, Turku, Finland
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Heydarian N, Ferrell M, Nair AS, Roedl C, Peng Z, Nguyen TD, Best W, Wozniak KL, Rice CV. Low-Molecular Weight Branched Polyethylenimine Reduces Cytokine Secretion from Human Immune System Monocytes Stimulated with Bacterial and Fungal PAMPs. ChemMedChem 2024; 19:e202400011. [PMID: 38740551 DOI: 10.1002/cmdc.202400011] [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: 01/04/2024] [Revised: 05/01/2024] [Accepted: 05/06/2024] [Indexed: 05/16/2024]
Abstract
The innate immune system is an evolutionarily conserved pathogen recognition mechanism that serves as the first line of defense against tissue damage or pathogen invasion. Unlike the adaptive immunity that recruits T-cells and specific antibodies against antigens, innate immune cells express pathogen recognition receptors (PRRs) that can detect various pathogen-associated molecular patterns (PAMPs) released by invading pathogens. Microbial molecular patterns, such as lipopolysaccharide (LPS) from Gram-negative bacteria, trigger signaling cascades in the host that result in the production of pro-inflammatory cytokines. LPS stimulation produces a strong immune response and excessive LPS signaling leads to dysregulation of the immune response. However, dysregulated inflammatory response during wound healing often results in chronic non-healing wounds that are difficult to control. In this work, we present data demonstrating partial neutralization of anionic LPS molecules using cationic branched polyethylenimine (BPEI). The anionic sites on the LPS molecules from Escherichia coli (E. coli) and Klebsiella pneumoniae (K. pneumoniae) are the lipid A moiety and BPEI binding create steric factors that hinder the binding of PRR signaling co-factors. This reduces the production of pro-inflammatory TNF-α cytokines. However, the anionic sites of Pseudomonas aeruginosa (P. aeruginosa) LPS are in the O-antigen region and subsequent BPEI binding slightly reduces TNF-α cytokine production. Fortunately, BPEI can reduce TNF-α cytokine expression in response to stimulation by intact P. aeruginosa bacterial cells and fungal zymosan PAMPs. Thus low-molecular weight (600 Da) BPEI may be able to counter dysregulated inflammation in chronic wounds and promote successful repair following tissue injury.
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Affiliation(s)
- Neda Heydarian
- Department of Chemistry and Biochemistry, Stephenson Life Sciences Research Center, University of Oklahoma, 101 Stephenson Parkway, Norman, OK 73019, USA
| | - Maya Ferrell
- Department of Chemistry and Biochemistry, Stephenson Life Sciences Research Center, University of Oklahoma, 101 Stephenson Parkway, Norman, OK 73019, USA
| | - Ayesha S Nair
- Department of Microbiology and Molecular Genetics, Oklahoma State University, 307 Life Sciences East, Stillwater, OK 74078, USA
| | - Chase Roedl
- Department of Chemistry and Biochemistry, Stephenson Life Sciences Research Center, University of Oklahoma, 101 Stephenson Parkway, Norman, OK 73019, USA
| | - Zongkai Peng
- Department of Chemistry and Biochemistry, Stephenson Life Sciences Research Center, University of Oklahoma, 101 Stephenson Parkway, Norman, OK 73019, USA
| | - Tra D Nguyen
- Department of Chemistry and Biochemistry, Stephenson Life Sciences Research Center, University of Oklahoma, 101 Stephenson Parkway, Norman, OK 73019, USA
| | - William Best
- Department of Chemistry and Biochemistry, Stephenson Life Sciences Research Center, University of Oklahoma, 101 Stephenson Parkway, Norman, OK 73019, USA
| | - Karen L Wozniak
- Department of Microbiology and Molecular Genetics, Oklahoma State University, 307 Life Sciences East, Stillwater, OK 74078, USA
| | - Charles V Rice
- Department of Chemistry and Biochemistry, Stephenson Life Sciences Research Center, University of Oklahoma, 101 Stephenson Parkway, Norman, OK 73019, USA
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Jia Y, Zhang T, He M, Yang B, Wang Z, Liu Y. Melatonin Protects Against Colistin-Induced Intestinal Inflammation and Microbiota Dysbiosis. J Pineal Res 2024; 76:e12989. [PMID: 38978438 DOI: 10.1111/jpi.12989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 06/17/2024] [Accepted: 06/25/2024] [Indexed: 07/10/2024]
Abstract
Colistin is renowned as a last-resort antibiotic due to the emergence of multidrug-resistant pathogens. However, its potential toxicity significantly hampers its clinical utilization. Melatonin, chemically known as N-acetyl-5-hydroxytryptamine, is an endogenous hormone produced by the pineal gland and possesses diverse biological functions. However, the protective role of melatonin in alleviating antibiotic-induced intestinal inflammation remains unknown. Herein, we reveal that colistin stimulation markedly elevates intestinal inflammatory levels and compromises the gut barrier. In contrast, pretreatment with melatonin safeguards mice against intestinal inflammation and mucosal damage. Microbial diversity analysis indicates that melatonin supplementation prevents a reduction in the abundance of Erysipelotrichales and Bifidobacteriales, as well as an increase in Desulfovibrionales abundance, following colistin exposure. Remarkably, short-chain fatty acids (SCFAs) analysis shows that propanoic acid contributes to the protective effect of melatonin on colistin-induced intestinal inflammation. Furthermore, the protection effects of melatonin and propanoic acid on LPS-induced cellular inflammation in RAW 264.7 cells are confirmed. Mechanistic investigations suggest that intervention with melatonin and propanoic acid can repress the activation of the TLR4 signal and its downstream NF-κB and MAPK signaling pathways, thereby mitigating the toxic effects of colistin. Our work highlights the unappreciated role of melatonin in preventing the potential detrimental effects of colistin on intestinal health and suggests a combined therapeutic strategy to effectively manage intestinal infectious diseases.
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Affiliation(s)
- Yuqian Jia
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Tingting Zhang
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Mengping He
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Bingqing Yang
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Zhiqiang Wang
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, China
| | - Yuan Liu
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, China
- Institute of Comparative Medicine, Yangzhou University, Yangzhou, China
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8
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Garout W. Prevalence and risk factors of urinary tract infection among children with bronchiolitis. Pediatr Neonatol 2024; 65:348-353. [PMID: 38044234 DOI: 10.1016/j.pedneo.2023.08.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 07/24/2023] [Accepted: 08/24/2023] [Indexed: 12/05/2023] Open
Abstract
BACKGROUND The co-occurrence of bronchiolitis and urinary tract infections (UTI) in hospitalized children is associated with high morbidity and economic strain. However, due to a low prevalence (<3%) and inconsistent diagnostic criteria, there is ongoing debate regarding the necessity of systematic screening. This study estimated the prevalence of UTI among children admitted for bronchiolitis and analyzed the associated demographic and clinical factors. METHODS A 5-year (2016-2020) retrospective chart review was conducted among all children admitted for bronchiolitis at a referral pediatrics department in Jeddah, Saudi Arabia. UTI was diagnosed according to the American Association of Pediatrics criteria. Demographic, clinical, microbiological, and imaging data were extracted from the hospital electronic records. RESULTS Of the 491 cases of children with bronchiolitis, urine culture and analysis were available for 320 patients. Based on urine culture criteria alone, the prevalence of UTI was 13.1% (95% CI 9.6-17.3), and the most common pathogens included E. coli (33.3%), K. pneumoniae (23.8%), and Enterococcus faecalis (14.3%), and 13 (31.0%) of the isolates were EBSL. By considering urinalysis criteria, i.e., pyuria or nitrituria, the estimated prevalence of UTI decreased to 3.4% (1.7-6.1%), and the most common pathogens were K. pneumoniae (5/11) and E. coli (3/11), with 6/11 ESBL-producing isolates. Regurgitation associated with a higher risk of UTI compared to absence of regurgitation (5.3% versus 0.8%; p = 0.031). Urinary tract ultrasound showed high specificity (98.7-100%) and negative predictive value (97.4-97.7%) in UTI using either criterion. CONCLUSIONS There is a higher prevalence of UTI among children with bronchiolitis in the study center, which has several implications in screening, diagnosis, and management. Further multicenter studies are required to enhance the external validity of these findings and assess the cost-effectiveness of screening strategy at a national level.
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Virgilio MC, Ramnani B, Chen T, Disbennett WM, Lubow J, Welch JD, Collins KL. HIV-1 Vpr combats the PU.1-driven antiviral response in primary human macrophages. Nat Commun 2024; 15:5514. [PMID: 38951492 PMCID: PMC11217462 DOI: 10.1038/s41467-024-49635-w] [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: 02/15/2023] [Accepted: 06/12/2024] [Indexed: 07/03/2024] Open
Abstract
HIV-1 Vpr promotes efficient spread of HIV-1 from macrophages to T cells by transcriptionally downmodulating restriction factors that target HIV-1 Envelope protein (Env). Here we find that Vpr induces broad transcriptomic changes by targeting PU.1, a transcription factor necessary for expression of host innate immune response genes, including those that target Env. Consistent with this, we find silencing PU.1 in infected macrophages lacking Vpr rescues Env. Vpr downmodulates PU.1 through a proteasomal degradation pathway that depends on physical interactions with PU.1 and DCAF1, a component of the Cul4A E3 ubiquitin ligase. The capacity for Vpr to target PU.1 is highly conserved across primate lentiviruses. In addition to impacting infected cells, we find that Vpr suppresses expression of innate immune response genes in uninfected bystander cells, and that virion-associated Vpr can degrade PU.1. Together, we demonstrate Vpr counteracts PU.1 in macrophages to blunt antiviral immune responses and promote viral spread.
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Affiliation(s)
- Maria C Virgilio
- Cellular and Molecular Biology Program, University of Michigan, Ann Arbor, MI, USA
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI, USA
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Barkha Ramnani
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Thomas Chen
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI, USA
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA
| | - W Miguel Disbennett
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA
- Post-Baccalaureate Research Education Program (PREP), University of Michigan, Ann Arbor, MI, USA
- University of Pennsylvania, Philadelphia, PA, USA
| | - Jay Lubow
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA
- ImmunoVec, Inc., Los Angeles, CA, USA
| | - Joshua D Welch
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI, USA
- Department of Computer Science and Engineering, University of Michigan, Ann Arbor, USA
| | - Kathleen L Collins
- Cellular and Molecular Biology Program, University of Michigan, Ann Arbor, MI, USA.
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA.
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA.
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10
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Hasan A, Alonazi WB, Ibrahim M, Bin L. Immunoinformatics and Reverse Vaccinology Approach for the Identification of Potential Vaccine Candidates against Vandammella animalimors. Microorganisms 2024; 12:1270. [PMID: 39065039 PMCID: PMC11278545 DOI: 10.3390/microorganisms12071270] [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: 04/29/2024] [Revised: 06/17/2024] [Accepted: 06/19/2024] [Indexed: 07/28/2024] Open
Abstract
Vandammella animalimorsus is a Gram-negative and non-motile bacterium typically transmitted to humans through direct contact with the saliva of infected animals, primarily through biting, scratches, or licks on fractured skin. The absence of a confirmed post-exposure treatment of V. animalimorsus bacterium highlights the imperative for developing an effective vaccine. We intended to determine potential vaccine candidates and paradigm a chimeric vaccine against V. animalimorsus by accessible public data analysis of the strain by utilizing reverse vaccinology. By subtractive genomics, five outer membranes were prioritized as potential vaccine candidates out of 2590 proteins. Based on the instability index and transmembrane helices, a multidrug transporter protein with locus ID A0A2A2AHJ4 was designated as a potential candidate for vaccine construct. Sixteen immunodominant epitopes were retrieved by utilizing the Immune Epitope Database. The epitope encodes the strong binding affinity, nonallergenic properties, non-toxicity, high antigenicity scores, and high solubility revealing the more appropriate vaccine construct. By utilizing appropriate linkers and adjuvants alongside a suitable adjuvant molecule, the epitopes were integrated into a chimeric vaccine to enhance immunogenicity, successfully eliciting both adaptive and innate immune responses. Moreover, the promising physicochemical features, the binding confirmation of the vaccine to the major innate immune receptor TLR-4, and molecular dynamics simulations of the designed vaccine have revealed the promising potential of the selected candidate. The integration of computational methods and omics data has demonstrated significant advantages in discovering novel vaccine targets and mitigating vaccine failure rates during clinical trials in recent years.
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Affiliation(s)
- Ahmad Hasan
- State Key Laboratory of Rice Biology and Breeding, Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (A.H.); (M.I.)
| | - Wadi B. Alonazi
- Health Administration Department, College of Business Administration, King Saud University, Riyadh 11421, Saudi Arabia;
| | - Muhammad Ibrahim
- State Key Laboratory of Rice Biology and Breeding, Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (A.H.); (M.I.)
| | - Li Bin
- State Key Laboratory of Rice Biology and Breeding, Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (A.H.); (M.I.)
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11
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Parodis I, Lindblom J, Barturen G, Ortega-Castro R, Cervera R, Pers JO, Genre F, Hiepe F, Gerosa M, Kovács L, De Langhe E, Piantoni S, Stummvoll G, Vasconcelos C, Vigone B, Witte T, Alarcón-Riquelme ME, Beretta L. Molecular characterisation of lupus low disease activity state (LLDAS) and DORIS remission by whole-blood transcriptome-based pathways in a pan-European systemic lupus erythematosus cohort. Ann Rheum Dis 2024; 83:889-900. [PMID: 38373843 PMCID: PMC11187369 DOI: 10.1136/ard-2023-224795] [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: 07/30/2023] [Accepted: 02/05/2024] [Indexed: 02/21/2024]
Abstract
OBJECTIVES To unveil biological milieus underlying low disease activity (LDA) and remission versus active systemic lupus erythematosus (SLE). METHODS We determined differentially expressed pathways (DEPs) in SLE patients from the PRECISESADS project (NTC02890121) stratified into patients fulfilling and not fulfilling the criteria of (1) Lupus LDA State (LLDAS), (2) Definitions of Remission in SLE remission, and (3) LLDAS exclusive of remission. RESULTS We analysed data from 321 patients; 40.8% were in LLDAS, and 17.4% in DORIS remission. After exclusion of patients in remission, 28.3% were in LLDAS. Overall, 604 pathways differed significantly in LLDAS versus non-LLDAS patients with an false-discovery rate-corrected p (q)<0.05 and a robust effect size (dr)≥0.36. Accordingly, 288 pathways differed significantly between DORIS remitters and non-remitters (q<0.05 and dr≥0.36). DEPs yielded distinct molecular clusters characterised by differential serological, musculoskeletal, and renal activity. Analysis of partially overlapping samples showed no DEPs between LLDAS and DORIS remission. Drug repurposing potentiality for treating SLE was unveiled, as were important pathways underlying active SLE whose modulation could aid attainment of LLDAS/remission, including toll-like receptor (TLR) cascades, Bruton tyrosine kinase (BTK) activity, the cytotoxic T lymphocyte antigen 4 (CTLA-4)-related inhibitory signalling, and the nucleotide-binding oligomerization domain leucine-rich repeat-containing protein 3 (NLRP3) inflammasome pathway. CONCLUSIONS We demonstrated for the first time molecular signalling pathways distinguishing LLDAS/remission from active SLE. LLDAS/remission was associated with reversal of biological processes related to SLE pathogenesis and specific clinical manifestations. DEP clustering by remission better grouped patients compared with LLDAS, substantiating remission as the ultimate treatment goal in SLE; however, the lack of substantial pathway differentiation between the two states justifies LLDAS as an acceptable goal from a biological perspective.
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Affiliation(s)
- Ioannis Parodis
- Division of Rheumatology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
- Department of Gastroenterology, Dermatology and Rheumatology, Karolinska University Hospital, Stockholm, Sweden
- Department of Rheumatology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Julius Lindblom
- Division of Rheumatology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
- Department of Gastroenterology, Dermatology and Rheumatology, Karolinska University Hospital, Stockholm, Sweden
| | - Guillermo Barturen
- GENYO, Centre for Genomics and Oncological Research: Pfizer, University of Granada / Andalusian Regional Government, Granada, Spain, Medical Genomics, Granada, Spain
- Department of Genetics, Faculty of Sciences, University of Granada, Granada, Spain
| | | | - Ricard Cervera
- Department of Autoimmune Diseases, Hospital Clínic, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Catalonia, Spain
| | - Jacques-Olivier Pers
- Centre Hospitalier Universitaire de Brest, Hopital de la Cavale Blanche, Brest, France
| | - Fernanda Genre
- Research Group on Genetic Epidemiology and Atherosclerosis in Systemic Diseases and in Metabolic Bone Diseases of the Musculoskeletal System, IDIVAL, Santander, Spain
| | - Falk Hiepe
- Charité Universitätsmedizin Berlin, Berlin, Germany
| | | | | | - Ellen De Langhe
- Katholieke Universiteit Leuven and Universitair Ziekenhuis Leuven, Leuven, Belgium
| | - Silvia Piantoni
- Rheumatology and Clinical Immunology Unit, Department of Clinical and Experimental Sciences, Azienda Socio Sanitaria Territoriale Spedali Civili and University of Brescia, Brescia, Italy
| | | | | | - Barbara Vigone
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | | | - Marta E Alarcón-Riquelme
- GENYO, Centre for Genomics and Oncological Research: Pfizer, University of Granada / Andalusian Regional Government, Granada, Spain, Medical Genomics, Granada, Spain
- Department of Environmental Medicine, Karolinska Institute, Stockholm, Sweden
| | - Lorenzo Beretta
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
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12
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Silva-Aguiar RP, Teixeira DE, Peruchetti DB, Peres RAS, Alves SAS, Calil PT, Arruda LB, Costa LJ, Silva PL, Schmaier AH, Rocco PRM, Pinheiro AAS, Caruso-Neves C. Toll like receptor 4 mediates the inhibitory effect of SARS-CoV-2 spike protein on proximal tubule albumin endocytosis. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167155. [PMID: 38579939 DOI: 10.1016/j.bbadis.2024.167155] [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: 11/14/2023] [Revised: 03/27/2024] [Accepted: 03/29/2024] [Indexed: 04/07/2024]
Abstract
Tubular proteinuria is a common feature in COVID-19 patients, even in the absence of established acute kidney injury. SARS-CoV-2 spike protein (S protein) was shown to inhibit megalin-mediated albumin endocytosis in proximal tubule epithelial cells (PTECs). Angiotensin-converting enzyme type 2 (ACE2) was not directly involved. Since Toll-like receptor 4 (TLR4) mediates S protein effects in various cell types, we hypothesized that TLR4 could be participating in the inhibition of PTECs albumin endocytosis elicited by S protein. Two different models of PTECs were used: porcine proximal tubule cells (LLC-PK1) and human embryonic kidney cells (HEK-293). S protein reduced Akt activity by specifically inhibiting of threonine 308 (Thr308) phosphorylation, a process mediated by phosphoinositide-dependent kinase 1 (PDK1). GSK2334470, a PDK1 inhibitor, decreased albumin endocytosis and megalin expression mimicking S protein effect. S protein did not change total TLR4 expression but decreased its surface expression. LPS-RS, a TLR4 antagonist, also counteracted the effects of the S protein on Akt phosphorylation at Thr308, albumin endocytosis, and megalin expression. Conversely, these effects of the S protein were replicated by LPS, an agonist of TLR4. Incubation of PTECs with a pseudovirus containing S protein inhibited albumin endocytosis. Null or VSV-G pseudovirus, used as control, had no effect. LPS-RS prevented the inhibitory impact of pseudovirus containing the S protein on albumin endocytosis but had no influence on virus internalization. Our findings demonstrate that the inhibitory effect of the S protein on albumin endocytosis in PTECs is mediated through TLR4, resulting from a reduction in megalin expression.
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Affiliation(s)
- Rodrigo P Silva-Aguiar
- Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Douglas E Teixeira
- Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Diogo B Peruchetti
- Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Rodrigo A S Peres
- Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Sarah A S Alves
- Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Pedro T Calil
- Paulo de Góes Microbiology Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Luciana B Arruda
- Paulo de Góes Microbiology Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Luciana J Costa
- Paulo de Góes Microbiology Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Pedro L Silva
- Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; Rio de Janeiro Innovation Network in Nanosystems for Health-NanoSAÚDE/FAPERJ, Rio de Janeiro, Brazil; National Institute of Science and Technology for Regenerative Medicine, Rio de Janeiro, Brazil
| | - Alvin H Schmaier
- Department of Medicine, School of Medicine, Case Western Reserve University, Cleveland, OH, USA; University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - Patricia R M Rocco
- Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; Rio de Janeiro Innovation Network in Nanosystems for Health-NanoSAÚDE/FAPERJ, Rio de Janeiro, Brazil; National Institute of Science and Technology for Regenerative Medicine, Rio de Janeiro, Brazil
| | - Ana Acacia S Pinheiro
- Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; Rio de Janeiro Innovation Network in Nanosystems for Health-NanoSAÚDE/FAPERJ, Rio de Janeiro, Brazil
| | - Celso Caruso-Neves
- Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; Rio de Janeiro Innovation Network in Nanosystems for Health-NanoSAÚDE/FAPERJ, Rio de Janeiro, Brazil; National Institute of Science and Technology for Regenerative Medicine, Rio de Janeiro, Brazil.
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13
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Kim MJ, Lim SG, Cho DH, Lee JY, Suk K, Lee WH. Regulation of inflammatory response by LINC00346 via miR-25-3p-mediated modulation of the PTEN/PI3K/AKT/NF-κB pathway. Biochem Biophys Res Commun 2024; 709:149828. [PMID: 38537596 DOI: 10.1016/j.bbrc.2024.149828] [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: 12/15/2023] [Revised: 03/16/2024] [Accepted: 03/24/2024] [Indexed: 04/13/2024]
Abstract
Long intergenic non-coding RNA 346 (LINC00346) has been reported to be involved in the development of atherosclerosis and specific cancers by affecting signaling pathways. However, its function in inflammation has not been thoroughly studied. Therefore, its expression pattern and function were determined in the human macrophage-like cell line THP-1. Lipopolysaccharide (LPS) treatment induced the expression of LINC00346. LPS-induced NF-κB activation and proinflammatory cytokine expression were suppressed or enhanced by the overexpression or knockdown of LINC00346, respectively. Analyses using dual luciferase assay and decoy RNAs that could block RNA-RNA interactions indicated that LINC00346 improves phosphatase and tensin homolog (PTEN) expression by sponging miR-25-3p. Subsequently, PTEN suppresses phosphoinositide-3 kinase (PI3K)-mediated conversion of phosphatidylinositol-4,5-bisphosphate (PIP2) into phosphatidylinositol-3,4,5-trisphosphate (PIP3) as well as consequent activation of protein kinase B (AKT) and NF-κB. Interestingly, database analysis revealed that the expression levels of LINC00346 and PTEN were simultaneously decreased in breast cancer tissues. Further analyses conducted using a breast cancer cell line, MDA-MB-231, confirmed the functional relationship among LINC00346, miR-25-3p, and PTEN in LPS-induced activation of NF-κB. These results indicate that miR-25-3p-sponging activity of LINC00346 affects the balance between PTEN and PI3K as well as the downstream activation of AKT/NF-κB pathway in inflammatory conditions.
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Affiliation(s)
- Min-Ji Kim
- School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Su-Geun Lim
- School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Dong-Hyung Cho
- School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Jun-Yeong Lee
- School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Kyoungho Suk
- Department of Pharmacology, Brain Science & Engineering Institute, BK21 FOUR KNU Biomedical Convergence Program, Kyungpook National University School of Medicine, Daegu, 41944, Republic of Korea
| | - Won-Ha Lee
- School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group, Kyungpook National University, Daegu, 41566, Republic of Korea.
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14
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Wang T, Tang Y, Xia Y, Zhang Q, Cao S, Bie M, Kang F. IGF2 promotes alveolar bone regeneration in murine periodontitis via inhibiting cGAS/STING-mediated M1 macrophage polarization. Int Immunopharmacol 2024; 132:111984. [PMID: 38565043 DOI: 10.1016/j.intimp.2024.111984] [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: 01/01/2024] [Revised: 03/20/2024] [Accepted: 03/28/2024] [Indexed: 04/04/2024]
Abstract
Periodontitis is a chronic inflammatory disease with the destruction of supporting periodontal tissue. This study evaluated the role of insulin-like growth factor 2 (IGF2) in periodontitis by inhibiting the polarization of M1 macrophages via the cyclic GMP-AMP synthase (cGAS)/stimulator of interferon genes (STING) pathway. IGF2 was enriched in the gingival tissue of murine periodontitis model identified by RNA sequencing. IGF2 application alleviated the expression of pro-inflammatory factors and promoted osteogenesis and the expression of related genes and proteins in a dose-dependent manner in periodontitis. The result of micro-CT verified this finding. Both in vivo and in vitro results revealed that IGF2 decreased the polarization of M1 macrophages and pro-inflammatory factors by immunofluorescence staining, flow cytometry, western blotting and RT-PCR. IGF2 application promoted the osteogenic ability of periodontal ligament fibroblasts (PDLFs) indirectly via its inhibition of M1 polarization evaluated by alkaline phosphatase and alizarin red staining. Then, the cGAS/STING pathway was upregulated in periodontitis and macrophages challenged by LPS, the inhibition of which led to downregulation of M1 polarization. Furthermore, IGF2 could downregulate cGAS, STING and the phosphorylation of P65. Collectively, our study indicates IGF2 can regulate the polarization of M1 macrophages via the cGAS/STING pathway and highlights the promising future of IGF2 as a therapeutic treatment for periodontitis.
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Affiliation(s)
- Tairan Wang
- Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Yi Tang
- Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Yuxing Xia
- Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Qian Zhang
- Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Shaokang Cao
- Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Miaomiao Bie
- Second Dental Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Feiwu Kang
- Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China.
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15
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Pereira-Fantini PM, Tingay D, Lakshminrusimha S. A complex inflammatory mix: chorioamnionitis, antenatal steroids and early postnatal budesonide. Pediatr Res 2024:10.1038/s41390-024-03219-y. [PMID: 38724647 DOI: 10.1038/s41390-024-03219-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Accepted: 04/02/2024] [Indexed: 06/12/2024]
Affiliation(s)
- Prue M Pereira-Fantini
- Department of Paediatrics, University of Melbourne, Melbourne, VIC, Australia.
- Neonatal Research, Murdoch Children's Research Institute, Parkville, VIC, Australia.
| | - David Tingay
- Department of Paediatrics, University of Melbourne, Melbourne, VIC, Australia
- Neonatal Research, Murdoch Children's Research Institute, Parkville, VIC, Australia
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16
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Farder-Gomes CF, de Oliveira MA, Malaspina O, Nocelli RFC. Exposure of the stingless bee Melipona scutellaris to imidacloprid, pyraclostrobin, and glyphosate, alone and in combination, impair its walking activity and fat body morphology and physiology. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 348:123783. [PMID: 38490525 DOI: 10.1016/j.envpol.2024.123783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 02/28/2024] [Accepted: 03/11/2024] [Indexed: 03/17/2024]
Abstract
The stingless bee Melipona scutellaris performs buzz pollination, effectively pollinating several wild plants and crops with economic relevance. However, most research has focused on honeybees, leaving a significant gap in studies concerning native species, particularly regarding the impacts of pesticide combinations on these pollinators. Thus, this study aimed to evaluate the sublethal effects of imidacloprid (IMD), pyraclostrobin (PYR), and glyphosate (GLY) on the behavior and fat body cell morphology and physiology of M. scutellaris. Foragers were orally exposed to the different pesticides alone and in combination for 48 h. Bees fed with contaminated solution walked less, moved slower, presented morphological changes in the fat body, including vacuolization, altered cell shape and nuclei morphology, and exhibited a higher count of altered oenocytes and trophocytes. In all exposed groups, alone and in combination, the number of cells expressing caspase-3 increased, but the TLR4 number of cells expressing decreased compared to the control groups. The intensity of HSP70 immunolabeling increased compared to the control groups. However, the intensity of the immunolabeling of HSP90 decreased in the IMD, GLY, and I + G (IMD + GLY) groups but increased in I + P-exposed bees (IMD + PYR). Alternatively, exposure to PYR and P + G (PYR + GLY) did not affect the immunolabeling intensity. Our findings demonstrate the hazardous effects and environmental consequences of isolated and combined pesticides on a vital neotropical pollinator. Understanding how pesticides impact the fat body can provide crucial insights into the overall health and survival of native bee populations, which can help develop more environmentally friendly approaches to agricultural practices.
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Affiliation(s)
- Cliver Fernandes Farder-Gomes
- Departamento de Ciências da Natureza, Matemática e Educação, Universidade Federal de São Carlos Campus Araras, Araras, SP, 13600-970, Brazil.
| | - Marco Antônio de Oliveira
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Viçosa Campus Florestal, Florestal, MG, 35690-000, Brazil.
| | - Osmar Malaspina
- Universidade Estadual Paulista (UNESP) - "Júlio de Mesquita Filho", Instituto de Biociências (IB), Rio Claro, SP, 13506-900, Brazil.
| | - Roberta Ferreira Cornélio Nocelli
- Departamento de Ciências da Natureza, Matemática e Educação, Universidade Federal de São Carlos Campus Araras, Araras, SP, 13600-970, Brazil.
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17
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Skevaki C, Nadeau KC, Rothenberg ME, Alahmad B, Mmbaga BT, Masenga GG, Sampath V, Christiani DC, Haahtela T, Renz H. Impact of climate change on immune responses and barrier defense. J Allergy Clin Immunol 2024; 153:1194-1205. [PMID: 38309598 DOI: 10.1016/j.jaci.2024.01.016] [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: 06/29/2023] [Revised: 01/16/2024] [Accepted: 01/18/2024] [Indexed: 02/05/2024]
Abstract
Climate change is not just jeopardizing the health of our planet but is also increasingly affecting our immune health. There is an expanding body of evidence that climate-related exposures such as air pollution, heat, wildfires, extreme weather events, and biodiversity loss significantly disrupt the functioning of the human immune system. These exposures manifest in a broad range of stimuli, including antigens, allergens, heat stress, pollutants, microbiota changes, and other toxic substances. Such exposures pose a direct and indirect threat to our body's primary line of defense, the epithelial barrier, affecting its physical integrity and functional efficacy. Furthermore, these climate-related environmental stressors can hyperstimulate the innate immune system and influence adaptive immunity-notably, in terms of developing and preserving immune tolerance. The loss or failure of immune tolerance can instigate a wide spectrum of noncommunicable diseases such as autoimmune conditions, allergy, respiratory illnesses, metabolic diseases, obesity, and others. As new evidence unfolds, there is a need for additional research in climate change and immunology that covers diverse environments in different global settings and uses modern biologic and epidemiologic tools.
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Affiliation(s)
- Chrysanthi Skevaki
- Institute of Laboratory Medicine, member of the German Center for Lung Research and the Universities of Giessen and Marburg Lung Center, Philipps-University Marburg, Marburg, Germany
| | - Kari C Nadeau
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Harvard University, Boston, Mass
| | - Marc E Rothenberg
- Division of Allergy and Immunology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Barrak Alahmad
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Harvard University, Boston, Mass; Dasman Diabetes Institute, Kuwait City, Kuwait
| | - Blandina T Mmbaga
- Kilimanjaro Christian Medical University College, Moshi, Tanzania; Kilimanjaro Clinical Research Institute, Moshi, Tanzania
| | - Gileard G Masenga
- Kilimanjaro Christian Medical University College, Moshi, Tanzania; Department of Obstetrics and Gynecology, Kilimanjaro Christian Medical Centre, Moshi, Tanzania
| | - Vanitha Sampath
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Harvard University, Boston, Mass
| | - David C Christiani
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Harvard University, Boston, Mass; Pulmonary and Critical Care Division, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Mass
| | - Tari Haahtela
- Skin and Allergy Hospital, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Harald Renz
- Institute of Laboratory Medicine, member of the German Center for Lung Research and the Universities of Giessen and Marburg Lung Center, Philipps-University Marburg, Marburg, Germany; Kilimanjaro Christian Medical University College, Moshi, Tanzania; Department of Clinical Immunology and Allergology, Laboratory of Immunopathology, Sechenov University, Moscow, Russia.
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18
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Bahavarnia F, Hasanzadeh M, Bahavarnia P, Shadjou N. Advancements in application of chitosan and cyclodextrins in biomedicine and pharmaceutics: recent progress and future trends. RSC Adv 2024; 14:13384-13412. [PMID: 38660530 PMCID: PMC11041621 DOI: 10.1039/d4ra01370k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 04/18/2024] [Indexed: 04/26/2024] Open
Abstract
The global community is faced with numerous health concerns such as cancer, cardiovascular and neurological diseases, diabetes, joint pain, osteoporosis, among others. With the advancement of research in the fields of materials chemistry and medicine, pharmaceutical technology and biomedical analysis have entered a new stage of development. The utilization of natural oligosaccharides and polysaccharides in pharmaceutical/biomedical studies has gained significant attention. Over the past decade, several studies have shown that chitosan and cyclodextrin have promising biomedical implications in background analysis, ongoing development, and critical applications in biomedical and pharmaceutical research fields. This review introduces different types of saccharides/natural biopolymers such as chitosan and cyclodextrin and discusses their wide-ranging applications in the biomedical/pharmaceutical research area. Recent research advances in pharmaceutics and drug delivery based on cyclodextrin, and their response to smart stimuli, as well as the biological functions of cyclodextrin and chitosan, such as the immunomodulatory effects, antioxidant, and antibacterial properties, have also been discussed, along with their applications in tissue engineering, wound dressing, and drug delivery systems. Finally, the innovative applications of chitosan and cyclodextrin in the pharmaceutical/biomedicine were reviewed, and current challenges, research/technological gaps, and future development opportunities were surveyed.
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Affiliation(s)
- Farnaz Bahavarnia
- Nutrition Research Center, Tabriz University of Medical Sciences Tabriz Iran
| | - Mohammad Hasanzadeh
- Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences Tabriz Iran
| | - Parinaz Bahavarnia
- Food and Drug Safety Research Center, Tabriz University of Medical Sciences Tabriz Iran
| | - Nasrin Shadjou
- Department of Nanotechnology, Faculty of Chemistry, Urmia University Urmia Iran
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19
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Yokosawa T, Miyagawa S, Suzuki W, Nada Y, Hirata Y, Noguchi T, Matsuzawa A. The E3 Ubiquitin Protein Ligase LINCR Amplifies the TLR-Mediated Signals through Direct Degradation of MKP1. Cells 2024; 13:687. [PMID: 38667302 PMCID: PMC11048823 DOI: 10.3390/cells13080687] [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: 12/15/2023] [Revised: 04/13/2024] [Accepted: 04/13/2024] [Indexed: 04/28/2024] Open
Abstract
Toll-like receptors (TLRs) induce innate immune responses through activation of intracellular signaling pathways, such as MAP kinase and NF-κB signaling pathways, and play an important role in host defense against bacterial or viral infections. Meanwhile, excessive activation of TLR signaling leads to a variety of inflammatory disorders, including autoimmune diseases. TLR signaling is therefore strictly controlled to balance optimal immune response and inflammation. However, its balancing mechanisms are not fully understood. In this study, we identified the E3 ubiquitin ligase LINCR/ NEURL3 as a critical regulator of TLR signaling. In LINCR-deficient cells, the sustained activation of JNK and p38 MAPKs induced by the agonists for TLR3, TLR4, and TLR5, was clearly attenuated. Consistent with these observations, TLR-induced production of a series of inflammatory cytokines was significantly attenuated, suggesting that LINCR positively regulates innate immune responses by promoting the activation of JNK and p38. Interestingly, our further mechanistic study identified MAPK phosphatase-1 (MKP1), a negative regulator of MAP kinases, as a ubiquitination target of LINCR. Thus, our results demonstrate that TLRs fine-tune the activation of MAP kinase pathways by balancing LINCR (the positive regulator) and MKP1 (the negative regulator), which may contribute to the induction of optimal immune responses.
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Affiliation(s)
| | | | | | | | | | - Takuya Noguchi
- Laboratory of Health Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Atsushi Matsuzawa
- Laboratory of Health Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
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20
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Roko G, Porada R, Gdula-Argasińska J, Piekoszewski W, Chabi-Sika K, Krakowska-Sieprawska A, Buszewski B, Librowski T, Baba-Moussa L. Comparison of supercritical CO 2 extraction and pressurized fluid extraction for isolation of alkaloids from Anacardium occidentale with the study of its anti-inflammatory activity. J Pharm Biomed Anal 2024; 241:115982. [PMID: 38237542 DOI: 10.1016/j.jpba.2024.115982] [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: 11/13/2023] [Revised: 12/23/2023] [Accepted: 01/10/2024] [Indexed: 02/21/2024]
Abstract
In recent years, there has been a growing interest in the therapeutic potential of natural compounds, particularly of plant origin, owing to their demonstrated anti-inflammatory properties. Among these, Anacardium occidentale, commonly known as cashew, has garnered significant attention due to its reputed health benefits. This study aim to establish a correlation between the bioactive compounds contained in the extracts of Anacardium occidentale and its anti-inflammatory activity. Dried Anacardium occidentale leaves powder was used as the extraction matrix. Extraction techniques are maceration, pressurized fluid extraction (PFE), and supercritical fluid extraction (SFE). The preliminary analysis of extracts was made by LC-MS/MS. The Response Surface Methodology (RSM), Principal Component Analysis (PCA), and heat maps were employed to model the influence of experimental conditions on extraction yield and peak area of specific compounds from the plant. To evaluate anti-inflammatory activity, RAW 264.7 cells were cultured, activated with LPS, and treated with varying concentrations of the plant extracts. Cell proliferation was assessed using the XTT assay. Indeed, Anacardium occidentale extracts contain anacardic acids, cardanols, and cardol, with distinct profiles yielded by SFE and ethanol-based methods. RSM shows that temperature and ethanol, as additives to CO2, significantly affect extraction efficiency in both PFE and SFE. Moreover, this composition with SFE demonstrate higher selectivity for specific group of compounds. The extracts exhibit anti-inflammatory properties without cytotoxicity in macrophages, reducing levels of pro-inflammatory proteins COX-2, COX-1, and TLR4 in activated cells. This suggests their potential as anti-inflammatory agents without adverse effects on cell viability or pro-inflammatory protein levels in non-activated cells. Overall, these findings underscore the promising therapeutic potential of Anacardium occidentale extracts in mitigating inflammation, while also providing crucial insights into optimizing the extraction process for targeted compound isolation. Thus, this makes a good prospect for the development of anti-inflammatory drugs from this plant.
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Affiliation(s)
- Gautier Roko
- Laboratory of Biology and Molecular Typing in Microbiology, Department of Biochemistry and Cellular Biology, University of Abomey-Calavi, Benin
| | - Radosław Porada
- Department of Analytical Chemistry, Faculty of Chemistry, Jagiellonian University in Krakow, Gronostajowa 2, 30-387 Kraków, Poland.
| | - Joanna Gdula-Argasińska
- Department of Radioligands, Faculty of Pharmacy, Medical College, Jagiellonian University in Krakow, Medyczna Street 9, 30-688 Kraków, Poland
| | - Wojciech Piekoszewski
- Department of Analytical Chemistry, Faculty of Chemistry, Jagiellonian University in Krakow, Gronostajowa 2, 30-387 Kraków, Poland
| | - Kamirou Chabi-Sika
- Laboratory of Biology and Molecular Typing in Microbiology, Department of Biochemistry and Cellular Biology, University of Abomey-Calavi, Benin
| | - Aneta Krakowska-Sieprawska
- Department of Plant Physiology, Genetics and Biotechnology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowskiego Street 1A, 10-719 Olsztyn, Poland
| | - Bogusław Buszewski
- Department of Environmental Chemistry and Bioanalysis, Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7, 87-100, Toruń, Poland; Prof. Jan Czochralski Kuyavian-Pomeranian Research & Development Centre, Krasińskiego 4, 87-100 Toruń, Poland
| | - Tadeusz Librowski
- Department of Radioligands, Faculty of Pharmacy, Medical College, Jagiellonian University in Krakow, Medyczna Street 9, 30-688 Kraków, Poland
| | - Lamine Baba-Moussa
- Laboratory of Biology and Molecular Typing in Microbiology, Department of Biochemistry and Cellular Biology, University of Abomey-Calavi, Benin
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21
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Byun E, McCurry SM, Kwon S, Tsai CS, Jun J, Bammler TK, Becker KJ, Thompson HJ. Fatigue, Toll-Like Receptor 4, and Pro-Inflammatory Cytokines in Adults With Subarachnoid Hemorrhage: A 6-Month Longitudinal Study. Biol Res Nurs 2024; 26:192-201. [PMID: 37788710 DOI: 10.1177/10998004231203257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
BACKGROUND Fatigue is prevalent in subarachnoid hemorrhage (SAH) survivors. Biological mechanisms underlying fatigue post-SAH are not clear. Inflammation may contribute to the development of fatigue. This study aimed to examine the associations between inflammatory markers and fatigue during the first 6 months post-SAH. Specific biomarkers examined included both early and concurrent expression of Toll-Like Receptor 4 (TLR4) messenger RNA (mRNA) and plasma concentrations of pro-inflammatory cytokines, Tumor Necrosis Factor-alpha (TNF-α), Interleukin (IL)1β, and IL6. METHODS We conducted a 6-month longitudinal study with a convenience sample of 43 SAH survivors. We collected blood samples on days 2, 3, and 7 and 2, 3, and 6 months post-SAH to assess biomarkers. Fatigue was assessed by the PROMIS Fatigue Scale at 2, 3, and 6 months. Linear mixed models were used to test the associations between early (days 2, 3, and 7) and concurrent (2, 3, and 6 months) TLR4 mRNA expression (TagMan gene expression assays) and TNF-α, IL1β, and IL6 plasma concentrations (multiplex assays) and concurrent fatigue. RESULTS 28% of SAH survivors experienced fatigue during the first 6 months post-SAH. Fatigue levels in SAH survivors were higher than those of the U.S. population and consistent during the 6 months. Experience of fatigue during the 6 months post-SAH was associated with higher IL1β plasma concentrations on day 7 and IL1β, IL6, and TNF-α plasma concentrations during the 6 months post-SAH. CONCLUSION Inflammation appears to underlie the development of fatigue in SAH survivors.
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Affiliation(s)
- Eeeseung Byun
- Department of Biobehavioral Nursing and Health Informatics, University of Washington, Seattle, WA, USA
| | - Susan M McCurry
- Department of Child, Family and Population Health Nursing, University of Washington, Seattle, WA, USA
| | - Suyoung Kwon
- Department of Child, Family and Population Health Nursing, University of Washington, Seattle, WA, USA
| | - Chi-Shan Tsai
- Department of Biobehavioral Nursing and Health Informatics, University of Washington, Seattle, WA, USA
| | - Jeehye Jun
- Red Cross College of Nursing, Chung-Ang University, Seoul, Republic of Korea
| | - Theo K Bammler
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
| | - Kyra J Becker
- Department of Neurology, University of Washington, Seattle, WA, USA
| | - Hilaire J Thompson
- Department of Biobehavioral Nursing and Health Informatics, University of Washington, Seattle, WA, USA
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22
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Thakur V, Gonzalez MA, Parada M, Martinez RD, Chattopadhyay M. Role of Histone Deacetylase Inhibitor in Diabetic Painful Neuropathy. Mol Neurobiol 2024; 61:2283-2296. [PMID: 37875708 DOI: 10.1007/s12035-023-03701-4] [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: 07/20/2023] [Accepted: 10/06/2023] [Indexed: 10/26/2023]
Abstract
Diabetic painful neuropathy (DPN) is one of the most detrimental complications of diabetes. Alterations in neuroinflammatory mediators play significant roles in the development of DPN. Infiltration of the neutrophils and monocyte/macrophages contributes substantial role in the degenerative process of the distal sciatic nerve by forming neutrophil extracellular traps (NETs) under diabetic condition. Citrullination of histones due to increase in protein arginine deiminase (PAD) enzyme activity under hyperglycemia may promote NET formation, which can further increase the cytokine production by activating macrophages and proliferation of neutrophils. This study reveals that the increase in histone deacetylases (HDAC) is crucial in DPN and inhibition of HDAC using HDAC inhibitor (HDACi) FK228 would suppress NETosis and alleviate diabetic nerve degeneration and pain. FK228, also known as romidepsin, is FDA approved for the treatment of cutaneous T-cell lymphoma yet the molecular mechanisms of this drug are not completely understood in DPN. In this study, type 2 diabetic (T2D) mice with pain were treated with HDACi, FK228 1 mg/kg; I.P. 2 × /week for 3 weeks. The results demonstrate that FK228 treatment can alleviate thermal hyperalgesia and mechanical allodynia significantly along with changes in the expression of HDACs in the dorsal root ganglia (DRG) and spinal cord dorsal horn neurons of diabetic animals. The results also indicate that FK228 treatment can alter the expression of neutrophil elastase (NE), extracellular or cell free DNA (cfDNA), citrullinated histone-3 (CitH3), PADI4, growth-associated protein (GAP)-43, and glucose transporter (GLUT)-4. Overall, this study suggests that FK228 could amend the expression of nerve regeneration markers and inflammatory mediators in diabetic animals and may offer an alternative treatment approach for DPN.
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Affiliation(s)
- Vikram Thakur
- Department of Molecular and Translational Medicine, Center of Emphasis in Diabetes and Metabolism, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center El Paso, El Paso, TX, USA
| | - Mayra A Gonzalez
- Department of Molecular and Translational Medicine, Texas Tech University Health Sciences Center El Paso, El Paso, TX, USA
| | - Maria Parada
- Francis Graduate School of Biomedical Sciences, Texas Tech University Health Sciences Center El Paso, El Paso, TX, USA
| | - Robert D Martinez
- Francis Graduate School of Biomedical Sciences, Texas Tech University Health Sciences Center El Paso, El Paso, TX, USA
| | - Munmun Chattopadhyay
- Department of Molecular and Translational Medicine, Center of Emphasis in Diabetes and Metabolism, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center El Paso, El Paso, TX, USA.
- Department of Molecular and Translational Medicine, Texas Tech University Health Sciences Center El Paso, El Paso, TX, USA.
- Francis Graduate School of Biomedical Sciences, Texas Tech University Health Sciences Center El Paso, El Paso, TX, USA.
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23
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DeJong MA, Wolf MA, Bitzer GJ, Hall JM, Fitzgerald NA, Pyles GM, Huckaby AB, Petty JE, Lee K, Barbier M, Bevere JR, Ernst RK, Damron FH. BECC438b TLR4 agonist supports unique immune response profiles from nasal and muscular DTaP pertussis vaccines in murine challenge models. Infect Immun 2024; 92:e0022323. [PMID: 38323817 DOI: 10.1128/iai.00223-23] [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: 06/05/2023] [Accepted: 12/08/2023] [Indexed: 02/08/2024] Open
Abstract
The protection afforded by acellular pertussis vaccines wanes over time, and there is a need to develop improved vaccine formulations. Options to improve the vaccines involve the utilization of different adjuvants and administration via different routes. While intramuscular (IM) vaccination provides a robust systemic immune response, intranasal (IN) vaccination theoretically induces a localized immune response within the nasal cavity. In the case of a Bordetella pertussis infection, IN vaccination results in an immune response that is similar to natural infection, which provides the longest duration of protection. Current acellular formulations utilize an alum adjuvant, and antibody levels wane over time. To overcome the current limitations with the acellular vaccine, we incorporated a novel TLR4 agonist, BECC438b, into both IM and IN acellular formulations to determine its ability to protect against infection in a murine airway challenge model. Following immunization and challenge, we observed that DTaP + BECC438b reduced bacterial burden within the lung and trachea for both administration routes when compared with mock-vaccinated and challenged (MVC) mice. Interestingly, IN administration of DTaP + BECC438b induced a Th1-polarized immune response, while IM vaccination polarized toward a Th2 immune response. RNA sequencing analysis of the lung demonstrated that DTaP + BECC438b activates biological pathways similar to natural infection. Additionally, IN administration of DTaP + BECC438b activated the expression of genes involved in a multitude of pathways associated with the immune system. Overall, these data suggest that BECC438b adjuvant and the IN vaccination route can impact efficacy and responses of pertussis vaccines in pre-clinical mouse models.
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Affiliation(s)
- Megan A DeJong
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, West Virginia, USA
- Vaccine Development Center at West Virginia University Health Sciences Center, Morgantown, West Virginia, USA
| | - M Allison Wolf
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, West Virginia, USA
- Vaccine Development Center at West Virginia University Health Sciences Center, Morgantown, West Virginia, USA
| | - Graham J Bitzer
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, West Virginia, USA
- Vaccine Development Center at West Virginia University Health Sciences Center, Morgantown, West Virginia, USA
| | - Jesse M Hall
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, West Virginia, USA
- Vaccine Development Center at West Virginia University Health Sciences Center, Morgantown, West Virginia, USA
| | - Nicholas A Fitzgerald
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, West Virginia, USA
- Vaccine Development Center at West Virginia University Health Sciences Center, Morgantown, West Virginia, USA
| | - Gage M Pyles
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, West Virginia, USA
- Vaccine Development Center at West Virginia University Health Sciences Center, Morgantown, West Virginia, USA
| | - Annalisa B Huckaby
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, West Virginia, USA
- Vaccine Development Center at West Virginia University Health Sciences Center, Morgantown, West Virginia, USA
| | - Jonathan E Petty
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, West Virginia, USA
- Vaccine Development Center at West Virginia University Health Sciences Center, Morgantown, West Virginia, USA
| | - Katherine Lee
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, West Virginia, USA
- Vaccine Development Center at West Virginia University Health Sciences Center, Morgantown, West Virginia, USA
| | - Mariette Barbier
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, West Virginia, USA
- Vaccine Development Center at West Virginia University Health Sciences Center, Morgantown, West Virginia, USA
| | - Justin R Bevere
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, West Virginia, USA
- Vaccine Development Center at West Virginia University Health Sciences Center, Morgantown, West Virginia, USA
| | - Robert K Ernst
- Department of Microbial Pathogenesis, University of Maryland School of Dentistry, Baltimore, Maryland, USA
| | - F Heath Damron
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, West Virginia, USA
- Vaccine Development Center at West Virginia University Health Sciences Center, Morgantown, West Virginia, USA
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24
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Romenskaja D, Jonavičė U, Tunaitis V, Pivoriūnas A. Extracellular vesicles from oral mucosa stem cells promote lipid raft formation in human microglia through TLR4, P2X4R, and αVβ3/αVβ5 signaling pathways. Cell Biol Int 2024; 48:358-368. [PMID: 38100213 DOI: 10.1002/cbin.12111] [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: 06/14/2023] [Revised: 09/24/2023] [Accepted: 12/01/2023] [Indexed: 02/15/2024]
Abstract
Targeting of disease-associated microglia represents a promising therapeutic approach that can be used for the prevention or slowing down neurodegeneration. In this regard, the use of extracellular vesicles (EVs) represents a promising therapeutic approach. However, the molecular mechanisms by which EVs regulate microglial responses remain poorly understood. In the present study, we used EVs derived from human oral mucosa stem cells (OMSCs) to investigate the effects on the lipid raft formation and the phagocytic response of human microglial cells. Lipid raft labeling with fluorescent cholera toxin subunit B conjugates revealed that both EVs and lipopolysaccharide (LPS) by more than two times increased lipid raft formation in human microglia. By contrast, combined treatment with LPS and EVs significantly decreased lipid raft formation indicating possible interference of EVs with the process of LPS-induced lipid raft formation. Specific inhibition of Toll-like receptor 4 (TLR4) with anti-TLR4 antibody as well as inhibition of purinergic P2X4 receptor (P2X4R) with selective antagonist 5-BDBD inhibited EVs- and LPS-induced lipid raft formation. Selective blockage of αvβ3/αvβ5 integrins with cilengitide suppressed EV- and LPS-induced lipid raft formation in microglia. Furthermore, inhibition of TLR4 and P2X4R prevented EV-induced phagocytic activity of human microglial cells. We demonstrate that EVs induce lipid raft formation in human microglia through interaction with TLR4, P2X4R, and αVβ3/αVβ5 signaling pathways. Our results provide new insights about the molecular mechanisms regulating EV/microglia interactions and could be used for the development of new therapeutic strategies against neurological disorders.
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Affiliation(s)
- Diana Romenskaja
- Department of Stem Cell Biology, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania
| | - Ugnė Jonavičė
- Department of Stem Cell Biology, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania
| | - Virginijus Tunaitis
- Department of Stem Cell Biology, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania
| | - Augustas Pivoriūnas
- Department of Stem Cell Biology, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania
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25
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Ahmed Fahmy ME, Abdel-Aal AA, Shalaby MA, Issa R, Badawi M, Fouly MA. Modulation of CXCL10 activity as a therapeutic target of ocular toxoplasmosis in diabetic mice. J Parasit Dis 2024; 48:33-45. [PMID: 38440758 PMCID: PMC10908887 DOI: 10.1007/s12639-023-01635-1] [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: 07/03/2023] [Accepted: 11/09/2023] [Indexed: 03/06/2024] Open
Abstract
Ocular toxoplasmosis is likely the most common cause of infectious posterior uveitis worldwide. CXCL10 chemokine has an important role in the maintenance of the T-cell response and the control of Toxoplasma gondii in the eye during chronic infection. Drugs that can modulate the chemokine activity could be effective against the parasite. In this work, CXCL10 local retinal expression was investigated in a diabetic mouse model with ocular toxoplasmosis for the first time. In addition, the efficacy of naphthoquinones and quinolones was compared to spiramycin (SP) in treating the infection and modulating the chemokine expression. Our results revealed that chloroquine (CQ) achieved the best results regarding the reduction of cerebral cyst burden (84.36%), improving the retinal histopathological changes, cellular infiltrates, and vasculitis significantly (P < 0.005), and balancing the strong CXCL10 expression caused by the infection. Buparvaquone-treated mice showed a significant percentage of reduction of brain cysts (76.25%), moderate improvement of histopathology, and mild to moderate CXCL10 expression. While SP showed the least efficacy against the parasite in the eye in the form of mild improvement of histopathological changes and downregulation of retinal chemokine expression with the least reduction rate of cerebral parasitic burden (57%). In conclusion, Optimal control of pathogens probably needs a balanced immune response with an optimum expression of chemokines. So, targeting the modulation of retinal CXCL10 may eventually be beneficial in the management of ocular toxoplasmosis plus its potential to act as a marker for predictive local immunological response during the infection.
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Affiliation(s)
| | - Amany Ahmed Abdel-Aal
- Department of Medical Parasitology, Faculty of Medicine, Cairo University, Cairo, Egypt
- Department of Postgraduate Studies & Scientific Research, Armed Forces College of Medicine (AFCM), Cairo, Egypt
| | - Maisa Ahmed Shalaby
- Department of Medical Parasitology, Theodor Bilharz Research Institute (TBRI), Giza, Egypt
| | - Ragaa Issa
- Departement of Parasitology, Research Institute of Ophthalmology, Giza, Egypt
| | - Manal Badawi
- Departement of Pathology, National Research Center, Giza, Egypt
| | - Marwa A. Fouly
- Departement of Retina, Research Institute of Ophthalmology, Giza, Egypt
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26
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Li Y, Wu C, Lee J, Ning Q, Lim J, Eoh H, Wang S, Hurrell BP, Akbari O, Ou JHJ. Hepatitis B virus e antigen induces atypical metabolism and differentially regulates programmed cell deaths of macrophages. PLoS Pathog 2024; 20:e1012079. [PMID: 38466743 PMCID: PMC10957081 DOI: 10.1371/journal.ppat.1012079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 03/21/2024] [Accepted: 02/28/2024] [Indexed: 03/13/2024] Open
Abstract
Macrophages can undergo M1-like proinflammatory polarization with low oxidative phosphorylation (OXPHOS) and high glycolytic activities or M2-like anti-inflammatory polarization with the opposite metabolic activities. Here we show that M1-like macrophages induced by hepatitis B virus (HBV) display high OXPHOS and low glycolytic activities. This atypical metabolism induced by HBV attenuates the antiviral response of M1-like macrophages and is mediated by HBV e antigen (HBeAg), which induces death receptor 5 (DR5) via toll-like receptor 4 (TLR4) to induce death-associated protein 3 (DAP3). DAP3 then induces the expression of mitochondrial genes to promote OXPHOS. HBeAg also enhances the expression of glutaminases and increases the level of glutamate, which is converted to α-ketoglutarate, an important metabolic intermediate of the tricarboxylic acid cycle, to promote OXPHOS. The induction of DR5 by HBeAg leads to apoptosis of M1-like and M2-like macrophages, although HBeAg also induces pyroptosis of the former. These findings reveal novel activities of HBeAg, which can reprogram mitochondrial metabolism and trigger different programmed cell death responses of macrophages depending on their phenotypes to promote HBV persistence.
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Affiliation(s)
- Yumei Li
- Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, California, United States of America
| | - Christine Wu
- Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, California, United States of America
| | - Jiyoung Lee
- Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, California, United States of America
| | - Qiqi Ning
- Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, California, United States of America
| | - Juhyeon Lim
- Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, California, United States of America
| | - Hyungjin Eoh
- Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, California, United States of America
| | - Sean Wang
- Michael Amini Transfusion Medicine Center, City of Hope, Duarte, California, United States of America
| | - Benjamin P. Hurrell
- Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, California, United States of America
| | - Omid Akbari
- Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, California, United States of America
| | - Jing-hsiung James Ou
- Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, California, United States of America
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27
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Virgilio MC, Ramnani B, Chen T, Disbennett WM, Lubow J, Welch JD, Collins KL. HIV-1 Vpr combats the PU.1-driven antiviral response in primary human macrophages. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.03.21.533528. [PMID: 36993393 PMCID: PMC10055223 DOI: 10.1101/2023.03.21.533528] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
HIV-1 Vpr promotes efficient spread of HIV-1 from macrophages to T cells by transcriptionally downmodulating restriction factors that target HIV-1 Envelope protein (Env). Here we find that Vpr induces broad transcriptomic changes by targeting PU.1, a transcription factor necessary for expression of host innate immune response genes, including those that target Env. Consistent with this, we find silencing PU.1 in infected macrophages lacking Vpr rescues Env. Vpr downmodulates PU.1 through a proteasomal degradation pathway that depends on physical interactions with PU.1 and DCAF1, a component of the Cul4A E3 ubiquitin ligase. The capacity for Vpr to target PU.1 is highly conserved across primate lentiviruses. In addition to impacting infected cells, we find that Vpr suppresses expression of innate immune response genes in uninfected bystander cells, and that virion-associated Vpr can degrade PU.1. Together, we demonstrate Vpr counteracts PU.1 in macrophages to blunt antiviral immune responses and promote viral spread.
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28
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Ray D, Sheldon EL, Zimmer C, Martin LB, Schrey AW. Screening H3 Histone Acetylation in a Wild Bird, the House Sparrow ( Passer Domesticus). Integr Org Biol 2024; 6:obae004. [PMID: 38516554 PMCID: PMC10956398 DOI: 10.1093/iob/obae004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 02/07/2024] [Accepted: 02/26/2024] [Indexed: 03/23/2024] Open
Abstract
Epigenetic mechanisms are increasingly understood to have major impacts across ecology. However, one molecular epigenetic mechanism, DNA methylation, currently dominates the literature. A second mechanism, histone modification, is likely important to ecologically relevant phenotypes and thus warrants investigation, especially because molecular interplay between methylation and histone acetylation can strongly affect gene expression. There are a limited number of histone acetylation studies on non-model organisms, yet those that exist show that it can impact gene expression and phenotypic plasticity. Wild birds provide an excellent system to investigate histone acetylation, as free-living individuals must rapidly adjust to environmental change. Here, we screen histone acetylation in the house sparrow (Passer domesticus); we studied this species because DNA methylation was important in the spread of this bird globally. This species has one of the broadest geographic distributions in the world, and part of this success is related to the way that it uses methylation to regulate its gene expression. Here, we verify that a commercially available assay that was developed for mammals can be used in house sparrows. We detected high variance in histone acetylation among individuals in both liver and spleen tissue. Further, house sparrows with higher epigenetic potential in the Toll Like Receptor-4 (TLR-4) promoter (i.e., CpG content) had higher histone acetylation in liver. Also, there was a negative correlation between histone acetylation in spleen and TLR-4 expression. In addition to validating a method for measuring histone acetylation in wild songbirds, this study also shows that histone acetylation is related to epigenetic potential and gene expression, adding a new study option for ecological epigenetics.
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Affiliation(s)
- D Ray
- Department of Biology, Georgia Southern University, Savannah, GA 31419, United States
| | - E L Sheldon
- USF Global Health and Infectious Disease Research Center and USF Genomics Center, College of Public Health University of South Florida, Tampa, FL 33612, United States
| | - C Zimmer
- Laboratoire d'Ethologie Expérimentale et Comparée, LEEC, Université Sorbonne Paris Nord, UR 4443, 93430 Villetaneuse, France
| | - L B Martin
- USF Global Health and Infectious Disease Research Center and USF Genomics Center, College of Public Health University of South Florida, Tampa, FL 33612, United States
| | - A W Schrey
- Department of Biology, Georgia Southern University, Savannah, GA 31419, United States
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Wang C, He J, Chen C, Luo W, Dang X, Mao L. A potential role of human esophageal cancer-related gene-4 in cardiovascular homeostasis. Gene 2024; 894:147977. [PMID: 37956966 DOI: 10.1016/j.gene.2023.147977] [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: 07/19/2023] [Revised: 10/10/2023] [Accepted: 11/08/2023] [Indexed: 11/19/2023]
Abstract
Human esophageal cancer related gene-4 (ECRG-4) encodes a 148-aminoacid pre-pro-peptide that can be processed tissue-dependently into multiple small peptides possessing multiple functions distinct from, similar to, or opposite to the tumor suppressor function of the full-length Ecrg4. Ecrg-4 is covalently bound to the cell surface through its signal peptide, colocalized with the innate immunity complex (TLR4-CD14-MD2), and functions as a 'sentinel' molecule in the maintenance of epithelium and leukocyte homeostasis, meaning that the presence of Ecrg-4 on the cell surface signals the maintained homeostasis, whereas the loss of Ecrg-4 due to tissue injury activates pro-inflammatory and tissue proliferative responses, and the level of Ecrg-4 gradually returns to its pre-injury level upon wound healing. Interestingly, Ecrg-4 is also highly expressed in the heart and its conduction system, endothelial cells, and vascular smooth muscle cells. Accumulating evidence has shown that Ecrg-4 is involved in cardiac rate/rhythm control, the development of atrial fibrillation, doxorubicin-induced cardiotoxicity, the ischemic response of the heart and hypoxic response in the carotid body, the pathogenesis of atherosclerosis, and likely the endemic incidence of idiopathic dilated cardiomyopathy. These preliminary discoveries suggest that Ecrg-4 may function as a 'sentinel' molecule in cardiovascular system as well. Here, we briefly review the basic characteristics of ECRG-4 as a tumor suppressor gene and its regulatory functions on inflammation and apoptosis; summarize the discoveries about its distribution in cardiovascular system and involvement in the development of CVDs, and discuss its potential as a novel therapeutic target for the maintenance of cardiovascular system homeostasis.
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Affiliation(s)
- Chaoying Wang
- The Key Laboratory of Medical Electrophysiology of Ministry of Education, Medical Electrophysiological Key Laboratory of Sichuan Province, Collaborative Innovation Center for Prevention and Treatment of Cardiovascular Disease of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, China
| | - Jianghui He
- The Key Laboratory of Medical Electrophysiology of Ministry of Education, Medical Electrophysiological Key Laboratory of Sichuan Province, Collaborative Innovation Center for Prevention and Treatment of Cardiovascular Disease of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, China
| | - Chunyue Chen
- The Key Laboratory of Medical Electrophysiology of Ministry of Education, Medical Electrophysiological Key Laboratory of Sichuan Province, Collaborative Innovation Center for Prevention and Treatment of Cardiovascular Disease of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, China
| | - Wenjun Luo
- The Key Laboratory of Medical Electrophysiology of Ministry of Education, Medical Electrophysiological Key Laboratory of Sichuan Province, Collaborative Innovation Center for Prevention and Treatment of Cardiovascular Disease of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, China
| | - Xitong Dang
- The Key Laboratory of Medical Electrophysiology of Ministry of Education, Medical Electrophysiological Key Laboratory of Sichuan Province, Collaborative Innovation Center for Prevention and Treatment of Cardiovascular Disease of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, China.
| | - Liang Mao
- The Key Laboratory of Medical Electrophysiology of Ministry of Education, Medical Electrophysiological Key Laboratory of Sichuan Province, Collaborative Innovation Center for Prevention and Treatment of Cardiovascular Disease of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, China; Department of Cardiology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, China.
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Hopp MT, Holze J, Lauber F, Holtkamp L, Rathod DC, Miteva MA, Prestes EB, Geyer M, Manoury B, Merle NS, Roumenina LT, Bozza MT, Weindl G, Imhof D. Insights into the molecular basis and mechanism of heme-triggered TLR4 signalling: The role of heme-binding motifs in TLR4 and MD2. Immunology 2024; 171:181-197. [PMID: 37885279 DOI: 10.1111/imm.13708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 10/06/2023] [Indexed: 10/28/2023] Open
Abstract
Haemolytic disorders, such as sickle cell disease, are accompanied by the release of high amounts of labile heme into the intravascular compartment resulting in the induction of proinflammatory and prothrombotic complications in affected patients. In addition to the relevance of heme-regulated proteins from the complement and blood coagulation systems, activation of the TLR4 signalling pathway by heme was ascribed a crucial role in the progression of these pathological processes. Heme binding to the TLR4-MD2 complex has been proposed recently, however, essential mechanistic information of the processes at the molecular level, such as heme-binding kinetics, the heme-binding capacity and the respective heme-binding sites (HBMs) is still missing. We report the interaction of TLR4, MD2 and the TLR4-MD2 complex with heme and the consequences thereof by employing biochemical, spectroscopic, bioinformatic and physiologically relevant approaches. Heme binding occurs transiently through interaction with up to four HBMs in TLR4, two HBMs in MD2 and at least four HBMs in their complex. Functional studies highlight that mutations of individual HBMs in TLR4 preserve full receptor activation by heme, suggesting that heme interacts with TLR4 through different binding sites independently of MD2. Furthermore, we confirm and extend the major role of TLR4 for heme-mediated cytokine responses in human immune cells.
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Affiliation(s)
- Marie-T Hopp
- Pharmaceutical Biochemistry and Bioanalytics, Pharmaceutical Institute, University of Bonn, Bonn, Germany
- Department of Chemistry, Institute of Integrated Natural Sciences, University of Koblenz, Koblenz, Germany
| | - Janine Holze
- Pharmacology and Toxicology, Pharmaceutical Institute, University of Bonn, Bonn, Germany
| | - Felicitas Lauber
- Pharmacology and Toxicology, Pharmaceutical Institute, University of Bonn, Bonn, Germany
| | - Laura Holtkamp
- Pharmacology and Toxicology, Pharmaceutical Institute, University of Bonn, Bonn, Germany
| | - Dhruv C Rathod
- Pharmaceutical Biochemistry and Bioanalytics, Pharmaceutical Institute, University of Bonn, Bonn, Germany
| | - Maria A Miteva
- CNRS UMR 8038 CiTCoM, Université de Paris, Faculté de Pharmacie de Paris, Paris, France
- INSERM U 1268 Medicinal Chemistry and Translational Research, Paris, France
| | - Elisa B Prestes
- Laboratório de Inflamação e Imunidade, Departamento de Imunologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Matthias Geyer
- Institute of Structural Biology, University of Bonn, Bonn, Germany
| | - Bénédicte Manoury
- Institut Necker Enfants Malades, INSERM U1151-CNRS UMR8253, Université Paris Cité, Faculté de médecine Necker, Paris, France
| | - Nicolas S Merle
- Centre de Recherche des Cordeliers, UMR_S 1138, INSERM, Paris, France
- Centre de Recherche des Cordeliers, Sorbonne Universités, Paris, France
- Centre de Recherche des Cordeliers, Université Paris Descartes, Paris, France
| | - Lubka T Roumenina
- Centre de Recherche des Cordeliers, UMR_S 1138, INSERM, Paris, France
- Centre de Recherche des Cordeliers, Sorbonne Universités, Paris, France
- Centre de Recherche des Cordeliers, Université Paris Descartes, Paris, France
| | - Marcelo T Bozza
- Laboratório de Inflamação e Imunidade, Departamento de Imunologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Günther Weindl
- Pharmacology and Toxicology, Pharmaceutical Institute, University of Bonn, Bonn, Germany
| | - Diana Imhof
- Pharmaceutical Biochemistry and Bioanalytics, Pharmaceutical Institute, University of Bonn, Bonn, Germany
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Sati P, Sharma E, Dhyani P, Attri DC, Rana R, Kiyekbayeva L, Büsselberg D, Samuel SM, Sharifi-Rad J. Paclitaxel and its semi-synthetic derivatives: comprehensive insights into chemical structure, mechanisms of action, and anticancer properties. Eur J Med Res 2024; 29:90. [PMID: 38291541 PMCID: PMC10826257 DOI: 10.1186/s40001-024-01657-2] [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: 11/09/2023] [Accepted: 01/11/2024] [Indexed: 02/01/2024] Open
Abstract
Cancer is a disease that can cause abnormal cell growth and can spread throughout the body. It is among the most significant causes of death worldwide, resulting in approx. 10 million deaths annually. Many synthetic anticancer drugs are available, but they often come with side effects and can interact negatively with other medications. Additionally, many chemotherapy drugs used for cancer treatment can develop resistance and harm normal cells, leading to dose-limiting side effects. As a result, finding effective cancer treatments and developing new drugs remains a significant challenge. However, plants are a potent source of natural products with the potential for cancer treatment. These biologically active compounds may be the basis for enhanced or less toxic derivatives. Herbal medicines/phytomedicines, or plant-based drugs, are becoming more popular in treating complicated diseases like cancer due to their effectiveness and are a particularly attractive option due to their affordability, availability, and lack of serious side effects. They have broad applicability and therapeutic efficacy, which has spurred scientific research into their potential as anticancer agents. This review focuses on Paclitaxel (PTX), a plant-based drug derived from Taxus sp., and its ability to treat specific tumors. PTX and its derivatives are effective against various cancer cell lines. Researchers can use this detailed information to develop effective and affordable treatments for cancer.
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Affiliation(s)
- Priyanka Sati
- Department of Biotechnology, Kumaun University, Bhimtal, Uttarakhand, India
| | - Eshita Sharma
- Department of Molecular Biology and Biochemistry, Guru Nanak Dev University, Amritsar, Punjab, India
| | - Praveen Dhyani
- Institute for Integrated Natural Sciences, University of Koblenz, Koblenz, Germany
| | - Dharam Chand Attri
- Department of Botany, Central University of Jammu, Rahya-Suchani (Bagla), Jammu and Kashmir, India
| | - Rohit Rana
- Department of Biology, Brandeis University, Waltham, MA, USA
| | - Lashyn Kiyekbayeva
- Department of Pharmaceutical Technology, Pharmaceutical School, Asfendiyarov Kazakh National Medical University, Almaty, Kazakhstan
| | - Dietrich Büsselberg
- Department of Physiology and Biophysics, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, P.O. Box 24144, Doha, Qatar.
| | - Samson Mathews Samuel
- Department of Physiology and Biophysics, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, P.O. Box 24144, Doha, Qatar.
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Yang C, Zhu Q, Chen Y, Ji K, Li S, Wu Q, Pan Q, Li J. Review of the Protective Mechanism of Curcumin on Cardiovascular Disease. Drug Des Devel Ther 2024; 18:165-192. [PMID: 38312990 PMCID: PMC10838105 DOI: 10.2147/dddt.s445555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 01/16/2024] [Indexed: 02/06/2024] Open
Abstract
Cardiovascular diseases (CVDs) are the most common cause of death worldwide and has been the focus of research in the medical community. Curcumin is a polyphenolic compound extracted from the root of turmeric. Curcumin has been shown to have a variety of pharmacological properties over the past decades. Curcumin can significantly protect cardiomyocyte injury after ischemia and hypoxia, inhibit myocardial hypertrophy and fibrosis, improve ventricular remodeling, reduce drug-induced myocardial injury, improve diabetic cardiomyopathy(DCM), alleviate vascular endothelial dysfunction, inhibit foam cell formation, and reduce vascular smooth muscle cells(VSMCs) proliferation. Clinical studies have shown that curcumin has a protective effect on blood vessels. Toxicological studies have shown that curcumin is safe. But high doses of curcumin also have some side effects, such as liver damage and defects in embryonic heart development. This article reviews the mechanism of curcumin intervention on CVDs in recent years, in order to provide reference for the development of new drugs in the future.
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Affiliation(s)
- Chunkun Yang
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, People's Republic of China
| | - Qinwei Zhu
- Department of Emergency, Weifang Hospital of Traditional Chinese Medicine, Weifang, Shandong, People's Republic of China
| | - Yanbo Chen
- Department of Arrhythmia, Weifang People's Hospital, Weifang, Shandong, People's Republic of China
| | - Kui Ji
- Department of Emergency, Weifang Hospital of Traditional Chinese Medicine, Weifang, Shandong, People's Republic of China
| | - Shuanghong Li
- Department of Emergency, Weifang Hospital of Traditional Chinese Medicine, Weifang, Shandong, People's Republic of China
| | - Qian Wu
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, People's Republic of China
| | - Qingquan Pan
- Department of Emergency, Weifang Hospital of Traditional Chinese Medicine, Weifang, Shandong, People's Republic of China
| | - Jun Li
- Department of Cardiology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, People's Republic of China
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Wu KY, Kulbay M, Daigle P, Nguyen BH, Tran SD. Nonspecific Orbital Inflammation (NSOI): Unraveling the Molecular Pathogenesis, Diagnostic Modalities, and Therapeutic Interventions. Int J Mol Sci 2024; 25:1553. [PMID: 38338832 PMCID: PMC10855920 DOI: 10.3390/ijms25031553] [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: 12/31/2023] [Revised: 01/21/2024] [Accepted: 01/23/2024] [Indexed: 02/12/2024] Open
Abstract
Nonspecific orbital inflammation (NSOI), colloquially known as orbital pseudotumor, sometimes presents a diagnostic and therapeutic challenge in ophthalmology. This review aims to dissect NSOI through a molecular lens, offering a comprehensive overview of its pathogenesis, clinical presentation, diagnostic methods, and management strategies. The article delves into the underpinnings of NSOI, examining immunological and environmental factors alongside intricate molecular mechanisms involving signaling pathways, cytokines, and mediators. Special emphasis is placed on emerging molecular discoveries and approaches, highlighting the significance of understanding molecular mechanisms in NSOI for the development of novel diagnostic and therapeutic tools. Various diagnostic modalities are scrutinized for their utility and limitations. Therapeutic interventions encompass medical treatments with corticosteroids and immunomodulatory agents, all discussed in light of current molecular understanding. More importantly, this review offers a novel molecular perspective on NSOI, dissecting its pathogenesis and management with an emphasis on the latest molecular discoveries. It introduces an integrated approach combining advanced molecular diagnostics with current clinical assessments and explores emerging targeted therapies. By synthesizing these facets, the review aims to inform clinicians and researchers alike, paving the way for molecularly informed, precision-based strategies for managing NSOI.
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Affiliation(s)
- Kevin Y. Wu
- Department of Surgery, Division of Ophthalmology, University of Sherbrooke, Sherbrooke, QC J1G 2E8, Canada; (K.Y.W.)
| | - Merve Kulbay
- Department of Ophthalmology & Visual Sciences, McGill University, Montreal, QC H4A 0A4, Canada
| | - Patrick Daigle
- Department of Surgery, Division of Ophthalmology, University of Sherbrooke, Sherbrooke, QC J1G 2E8, Canada; (K.Y.W.)
| | - Bich H. Nguyen
- CHU Sainte Justine Hospital, Montreal, QC H3T 1C5, Canada
| | - Simon D. Tran
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, QC H3A 1G1, Canada
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Roman F, Burny W, Ceregido MA, Laupèze B, Temmerman ST, Warter L, Coccia M. Adjuvant system AS01: from mode of action to effective vaccines. Expert Rev Vaccines 2024; 23:715-729. [PMID: 39042099 DOI: 10.1080/14760584.2024.2382725] [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: 04/17/2024] [Accepted: 07/17/2024] [Indexed: 07/24/2024]
Abstract
INTRODUCTION The use of novel adjuvants in human vaccines continues to expand as their contribution to preventing disease in challenging populations and caused by complex pathogens is increasingly understood. AS01 is a family of liposome-based vaccine Adjuvant Systems containing two immunostimulants: 3-O-desacyl-4'-monophosphoryl lipid A and the saponin QS-21. AS01-containing vaccines have been approved and administered to millions of individuals worldwide. AREAS COVERED Here, we report advances in our understanding of the mode of action of AS01 that contributed to the development of efficacious vaccines preventing disease due to malaria, herpes zoster, and respiratory syncytial virus. AS01 induces early innate immune activation that induces T cell-mediated and antibody-mediated responses with optimized functional characteristics and induction of immune memory. AS01-containing vaccines appear relatively impervious to baseline immune status translating into high efficacy across populations. Currently licensed AS01-containing vaccines have shown acceptable safety profiles in clinical trials and post-marketing settings. EXPERT OPINION Initial expectations that adjuvantation with AS01 could support effective vaccine responses and contribute to disease control have been realized. Investigation of the utility of AS01 in vaccines to prevent other challenging diseases, such as tuberculosis, is ongoing, together with efforts to fully define its mechanisms of action in different vaccine settings.
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Bahloul B, Chaabani R, Zahra Y, Kalboussi N, Kraiem J, Sfar S, Mignet N, Abdennebi HB. Thymoquinone-loaded self-nano-emulsifying drug delivery system against ischemia/reperfusion injury. Drug Deliv Transl Res 2024; 14:223-235. [PMID: 37523093 DOI: 10.1007/s13346-023-01395-8] [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] [Accepted: 07/18/2023] [Indexed: 08/01/2023]
Abstract
In the present study, a self-nano-emulsifying drug delivery system (SNEDDS) was developed to evaluate the efficiency of thymoquinone (TQ) in hepatic ischemia/reperfusion. SNEDDS was pharmaceutically characterized to evaluate droplet size, morphology, zeta potential, thermodynamic stability, and dissolution/diffusion capacity. Animals were orally pre-treated during 10 days with TQ-loaded SNEDDS. Biochemical analyses, hematoxylin-eosin staining, indirect immunofluorescence, and reverse transcription polymerase chain reaction (RT-PCR) were carried out to assess cell injury, oxidative stress, inflammation, and apoptosis. The TQ formulation showed good in vitro characteristics, including stable nanoparticle structure and size with high drug release rate. In vivo determinations revealed that TQ-loaded SNEDDS pre-treatment of rats maintained cellular integrity by decreasing transaminase (ALT and AST) release and preserving the histological characteristics of their liver. The antioxidant ability of the formulation was proven by increased SOD activity, reduced MDA concentration, and iNOS protein expression. In addition, this formulation exerted an anti-inflammatory effect evidenced by reduced plasma CRP concentration, MPO activity, and gene expressions of TLR-4, TNF-α, NF-κB, and IL-6. Finally, the TQ-loaded SNEDDS formulation promoted cell survival by enhancing the Bcl-2/Bax ratio. In conclusion, our results indicate that TQ encapsulated in SNEDDS significantly protects rat liver from I/R injury.
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Affiliation(s)
- Badr Bahloul
- Drug Development Laboratory (LR12ES09), Faculty of Pharmacy, University of Monastir, 1 Rue Avicenne 5000, Monastir, Tunisia.
| | - Roua Chaabani
- Laboratory of Human Genome and Multifactorial Diseases (LR12ES07), Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
| | - Yosri Zahra
- Laboratory of Human Genome and Multifactorial Diseases (LR12ES07), Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
| | - Nesrine Kalboussi
- Drug Development Laboratory (LR12ES09), Faculty of Pharmacy, University of Monastir, 1 Rue Avicenne 5000, Monastir, Tunisia
- Pharmacy Department, Sahloul University Hospital, Sousse, Tunisia
| | - Jamil Kraiem
- Drug Development Laboratory (LR12ES09), Faculty of Pharmacy, University of Monastir, 1 Rue Avicenne 5000, Monastir, Tunisia
| | - Souad Sfar
- Drug Development Laboratory (LR12ES09), Faculty of Pharmacy, University of Monastir, 1 Rue Avicenne 5000, Monastir, Tunisia
| | - Nathalie Mignet
- Faculté de Pharmacie, University of Paris Cité, CNRS, INSERM, UTCBS, 4 Avenue de l'Observatoire, 75006, Paris, France
| | - Hassen Ben Abdennebi
- Laboratory of Human Genome and Multifactorial Diseases (LR12ES07), Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
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Tamanna T, Rahman MS. Leveraging immunoinformatics for developing a multi-epitope subunit vaccine against Helicobacter pylori and Fusobacterium nucleatum. J Biomol Struct Dyn 2023:1-14. [PMID: 38116749 DOI: 10.1080/07391102.2023.2292295] [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: 03/22/2023] [Accepted: 11/25/2023] [Indexed: 12/21/2023]
Abstract
Gastric ulcers caused by Helicobacter pylori and Fusobacterium nucleatum remain a significant global health concern without an established vaccine. In this study, we utilized immunoinformatics methods to design a multi-epitope vaccine targeting these pathogens. Outer membrane proteins from H. pylori and F. nucleatum were scrutinized to identify high antigenic T-cell and B-cell epitopes. The resulting vaccine comprised carefully analyzed and evaluated epitopes, including cytotoxic T-lymphocytes, helper T-lymphocytes, and linear B-lymphocytes epitopes. This vaccine exhibited notable antigenicity, suitable immunogenicity, and demonstrated non-allergenicity and non-toxicity. It displayed favorable physiochemical characteristics and high solubility. In interaction studies, the vaccine exhibited robust binding to toll-like receptor 4 (TLR4). Molecular dynamic simulations revealed cohesive structural integrity and stable attachment. Codon adaptation utilizing Escherichia coli K12 host yielded a vaccine with elevated Codon Adaptation Index (CAI) and optimal GC content. In silico cloning into the pET28+(a) vector demonstrated efficient expression. Immune simulations indicated the vaccine's ability to initiate immune responses in humans, mirroring real-life scenarios. Based on these comprehensive findings, we propose that our developed vaccine has the potential to confer robust immunity against H. pylori and F. nucleatum infections.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Tanjin Tamanna
- Department of Genetic Engineering and Biotechnology, Jashore University of Science and Technology, Jashore, Bangladesh
- Bioinformatics and Microbial Biotechnology Laboratory, Department of Genetic Engineering and Biotechnology, Jashore University of Science and Technology, Jashore, Bangladesh
| | - Md Shahedur Rahman
- Department of Genetic Engineering and Biotechnology, Jashore University of Science and Technology, Jashore, Bangladesh
- Bioinformatics and Microbial Biotechnology Laboratory, Department of Genetic Engineering and Biotechnology, Jashore University of Science and Technology, Jashore, Bangladesh
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Kozłowski HM, Sobocińska J, Jędrzejewski T, Maciejewski B, Dzialuk A, Wrotek S. Fever-Range Hyperthermia Promotes Macrophage Polarization towards Regulatory Phenotype M2b. Int J Mol Sci 2023; 24:17574. [PMID: 38139402 PMCID: PMC10744093 DOI: 10.3390/ijms242417574] [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: 11/18/2023] [Revised: 12/12/2023] [Accepted: 12/15/2023] [Indexed: 12/24/2023] Open
Abstract
Fever-range hyperthermia (FRH) is utilized in chronic disease treatment and serves as a model for fever's thermal component investigation. Macrophages, highly susceptible to heat, play a pivotal role in various functions determined by their polarization state. However, it is not well recognized whether this process can be modulated by FRH. To address this, we used two different macrophage cell lines that were treated with FRH. Next, to define macrophage phenotype, we examined their functional surface markers CD80 and CD163, intracellular markers such as inducible nitric oxide synthase (iNOS), arginase-1 (Arg-1), and the expression of interleukin-10 (IL-10) and tumor necrosis factor α (TNF-α). Additionally, in FRH-treated cells, we analyzed an expression of Toll-like receptor 4 (TLR-4) and its role in macrophage polarization. We also checked whether FRH can switch the polarization of macrophages in pro-inflammatory condition triggered by lipopolysaccharide (LPS). FRH induced M2-like polarization, evident in increased CD163, IL-10, and Arg-1 expression. Notably, elevated COX-2, TNF-α, and TLR-4 indicated potential pro-inflammatory properties, suggesting polarization towards the M2b phenotype. Additionally, FRH shifted lipopolysaccharide (LPS)-induced M1 polarization to an M2-like phenotype, reducing antimicrobial molecules (ROS and NO). In summary, FRH emerged as a modulator favoring M2-like macrophage polarization, even under pro-inflammatory conditions, showcasing its potential therapeutic relevance.
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Affiliation(s)
- Henryk Mikołaj Kozłowski
- Department of Genetics, Faculty of Biological Sciences, Kazimierz Wielki University, 10 Powstańców Wielkopolskich Ave., 85-090 Bydgoszcz, Poland;
- Department of Immunology, Faculty of Veterinary and Biological Sciences, Nicolaus Copernicus University, 1 Lwowska Str., 87-100 Torun, Poland; (J.S.); (T.J.)
| | - Justyna Sobocińska
- Department of Immunology, Faculty of Veterinary and Biological Sciences, Nicolaus Copernicus University, 1 Lwowska Str., 87-100 Torun, Poland; (J.S.); (T.J.)
| | - Tomasz Jędrzejewski
- Department of Immunology, Faculty of Veterinary and Biological Sciences, Nicolaus Copernicus University, 1 Lwowska Str., 87-100 Torun, Poland; (J.S.); (T.J.)
| | - Bartosz Maciejewski
- Department of Immunology, Faculty of Veterinary and Biological Sciences, Nicolaus Copernicus University, 1 Lwowska Str., 87-100 Torun, Poland; (J.S.); (T.J.)
| | - Artur Dzialuk
- Department of Genetics, Faculty of Biological Sciences, Kazimierz Wielki University, 10 Powstańców Wielkopolskich Ave., 85-090 Bydgoszcz, Poland;
| | - Sylwia Wrotek
- Department of Immunology, Faculty of Veterinary and Biological Sciences, Nicolaus Copernicus University, 1 Lwowska Str., 87-100 Torun, Poland; (J.S.); (T.J.)
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Chawla M, Cuspoca AF, Akthar N, Magdaleno JSL, Rattanabunyong S, Suwattanasophon C, Jongkon N, Choowongkomon K, Shaikh AR, Malik T, Cavallo L. Immunoinformatics-aided rational design of a multi-epitope vaccine targeting feline infectious peritonitis virus. Front Vet Sci 2023; 10:1280273. [PMID: 38192725 PMCID: PMC10773687 DOI: 10.3389/fvets.2023.1280273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Accepted: 11/27/2023] [Indexed: 01/10/2024] Open
Abstract
Feline infectious peritonitis (FIP) is a grave and frequently lethal ailment instigated by feline coronavirus (FCoV) in wild and domestic feline species. The spike (S) protein of FCoV assumes a critical function in viral ingress and infection, thereby presenting a promising avenue for the development of a vaccine. In this investigation, an immunoinformatics approach was employed to ascertain immunogenic epitopes within the S-protein of FIP and formulate an innovative vaccine candidate. By subjecting the amino acid sequence of the FIP S-protein to computational scrutiny, MHC-I binding T-cell epitopes were predicted, which were subsequently evaluated for their antigenicity, toxicity, and allergenicity through in silico tools. Our analyses yielded the identification of 11 potential epitopes capable of provoking a robust immune response against FIPV. Additionally, molecular docking analysis demonstrated the ability of these epitopes to bind with feline MHC class I molecules. Through the utilization of suitable linkers, these epitopes, along with adjuvants, were integrated to design a multi-epitope vaccine candidate. Furthermore, the stability of the interaction between the vaccine candidate and feline Toll-like receptor 4 (TLR4) was established via molecular docking and molecular dynamics simulation analyses. This suggests good prospects for future experimental validation to ascertain the efficacy of our vaccine candidate in inducing a protective immune response against FIP.
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Affiliation(s)
- Mohit Chawla
- Physical Sciences and Engineering Division, Kaust Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Andrés Felipe Cuspoca
- Grupo de Investigación en Epidemiología Clínica de Colombia (GRECO), Universidad Pedagógica yTecnológica de Colombia, Tunja, Colombia
- Centro de Atención e Investigación Médica–CAIMED, Chía, Colombia
| | - Nahid Akthar
- Department of Research and Innovation, STEMskills Research and Education Lab Private Limited, Faridabad, Haryana, India
| | - Jorge Samuel Leon Magdaleno
- Physical Sciences and Engineering Division, Kaust Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | | | | | - Nathjanan Jongkon
- Department of Social and Applied Science, College of Industrial Technology, King Mongkut’s University of Technology North Bangkok, Bangkok, Thailand
| | | | - Abdul Rajjak Shaikh
- Department of Research and Innovation, STEMskills Research and Education Lab Private Limited, Faridabad, Haryana, India
| | - Tabarak Malik
- Department of Biomedical Sciences, Institute of Health, Jimma University, Jimma, Ethiopia
| | - Luigi Cavallo
- Physical Sciences and Engineering Division, Kaust Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
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Eom JA, Jeong JJ, Han SH, Kwon GH, Lee KJ, Gupta H, Sharma SP, Won SM, Oh KK, Yoon SJ, Joung HC, Kim KH, Kim DJ, Suk KT. Gut-microbiota prompt activation of natural killer cell on alcoholic liver disease. Gut Microbes 2023; 15:2281014. [PMID: 37988132 PMCID: PMC10730232 DOI: 10.1080/19490976.2023.2281014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 11/05/2023] [Indexed: 11/22/2023] Open
Abstract
The liver is rich in innate immune cells, such as natural killer (NK) cells, natural killer T cells, and Kupffer cells associated with the gut microbiome. These immune cells are dysfunctional owing to alcohol consumption. However, there is insufficient data on the association between immune cells and gut microbiome in alcoholic liver disease (ALD). Therefore, the purpose of this study was to evaluate the effects of probiotic strains on NK cells in ALD patients. In total, 125 human blood samples [control (n = 22), alcoholic hepatitis (n = 43), and alcoholic cirrhosis (n = 60]) were collected for flow cytometric analysis. C57BL/6J mice were divided into four groups (normal, EtOH-fed, and 2 EtOH+strain groups [Phocaeicola dorei and Lactobacillus helveticus]). Lymphocytes isolated from mouse livers were analyzed using flow cytometry. The frequency of NK cells increased in patients with alcoholic hepatitis and decreased in patients with alcoholic cirrhosis. The expression of NKp46, an NK cell-activating receptor, was decreased in patients with alcoholic hepatitis and increased in patients with alcoholic cirrhosis compared to that in the control group. The number of cytotoxic CD56dimCD16+ NK cells was significantly reduced in patients with alcoholic cirrhosis. We tested the effect of oral administration P. dorei and L. helveticus in EtOH-fed mice. P. dorei and L. helveticus improved liver inflammation and intestinal barrier damage caused by EtOH supply and increased NK cell activity. Therefore, these observations suggest that the gut microbiome may ameliorate ALD by regulating immune cells.
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Affiliation(s)
- Jung A Eom
- Institute for Liver and Digestive Diseases, Hallym University, Chuncheon, Republic of Korea
| | - Jin-Ju Jeong
- Institute for Liver and Digestive Diseases, Hallym University, Chuncheon, Republic of Korea
| | - Sang Hak Han
- Department of Pathology, Hallym University College of Medicine, Chuncheon, Republic of Korea
| | - Goo Hyun Kwon
- Institute for Liver and Digestive Diseases, Hallym University, Chuncheon, Republic of Korea
| | - Kyeong Jin Lee
- Institute for Liver and Digestive Diseases, Hallym University, Chuncheon, Republic of Korea
| | - Haripriya Gupta
- Institute for Liver and Digestive Diseases, Hallym University, Chuncheon, Republic of Korea
| | - Satya Priya Sharma
- Institute for Liver and Digestive Diseases, Hallym University, Chuncheon, Republic of Korea
| | - Sung-Min Won
- Institute for Liver and Digestive Diseases, Hallym University, Chuncheon, Republic of Korea
| | - Ki-Kwang Oh
- Institute for Liver and Digestive Diseases, Hallym University, Chuncheon, Republic of Korea
| | - Sang Jun Yoon
- Institute for Liver and Digestive Diseases, Hallym University, Chuncheon, Republic of Korea
| | - Hyun Chae Joung
- Chong Kun Dang Bio Research Institute, Ansan-si, Gyeonggi-do, Republic of Korea
| | - Kyung Hwan Kim
- Chong Kun Dang Bio Research Institute, Ansan-si, Gyeonggi-do, Republic of Korea
| | - Dong Joon Kim
- Institute for Liver and Digestive Diseases, Hallym University, Chuncheon, Republic of Korea
| | - Ki Tae Suk
- Institute for Liver and Digestive Diseases, Hallym University, Chuncheon, Republic of Korea
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40
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Nilsen KE, Zhang B, Skjesol A, Ryan L, Vagle H, Bøe MH, Orning P, Kim H, Bakke SS, Elamurugan K, Mestvedt IB, Stenvik J, Husebye H, Lien E, Espevik T, Yurchenko M. Peptide derived from SLAMF1 prevents TLR4-mediated inflammation in vitro and in vivo. Life Sci Alliance 2023; 6:e202302164. [PMID: 37788908 PMCID: PMC10547912 DOI: 10.26508/lsa.202302164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 09/21/2023] [Accepted: 09/22/2023] [Indexed: 10/05/2023] Open
Abstract
Inflammation plays a crucial role in the development and progression of many diseases, and is often caused by dysregulation of signalling from pattern recognition receptors, such as TLRs. Inhibition of key protein-protein interactions is an attractive target for treating inflammation. Recently, we demonstrated that the signalling lymphocyte activation molecule family 1 (SLAMF1) positively regulates signalling downstream of TLR4 and identified the interaction interface between SLAMF1 and the TLR4 adaptor protein TRIF-related adapter molecule (TRAM). Based on these findings, we developed a SLAMF1-derived peptide, P7, which is linked to a cell-penetrating peptide for intracellular delivery. We found that P7 peptide inhibits the expression and secretion of IFNβ and pro-inflammatory cytokines (TNF, IL-1β, IL-6) induced by TLR4, and prevents death in mice subjected to LPS shock. The mechanism of action of P7 peptide is based on interference with several intracellular protein-protein interactions, including TRAM-SLAMF1, TRAM-Rab11FIP2, and TIRAP-MyD88 interactions. Overall, P7 peptide has a unique mode of action and demonstrates high efficacy in inhibiting TLR4-mediated signalling in vitro and in vivo.
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Affiliation(s)
- Kaja Elisabeth Nilsen
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Boyao Zhang
- Program in Innate Immunity, Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Astrid Skjesol
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Liv Ryan
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Hilde Vagle
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Maren Helene Bøe
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Pontus Orning
- Program in Innate Immunity, Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Hera Kim
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Siril Skaret Bakke
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Kirusika Elamurugan
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Ingvild Bergdal Mestvedt
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Jørgen Stenvik
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Infectious Diseases, Clinic of Medicine, St. Olavs Hospital HF, Trondheim University Hospital, Trondheim, Norway
| | - Harald Husebye
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Egil Lien
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- Program in Innate Immunity, Division of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Terje Espevik
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Infectious Diseases, Clinic of Medicine, St. Olavs Hospital HF, Trondheim University Hospital, Trondheim, Norway
| | - Maria Yurchenko
- https://ror.org/05xg72x27 Centre of Molecular Inflammation Research, Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Infectious Diseases, Clinic of Medicine, St. Olavs Hospital HF, Trondheim University Hospital, Trondheim, Norway
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Subramaniyan V, Lubau NSA, Mukerjee N, Kumarasamy V. Alcohol-induced liver injury in signalling pathways and curcumin's therapeutic potential. Toxicol Rep 2023; 11:355-367. [PMID: 37868808 PMCID: PMC10585641 DOI: 10.1016/j.toxrep.2023.10.005] [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: 08/09/2023] [Revised: 09/30/2023] [Accepted: 10/11/2023] [Indexed: 10/24/2023] Open
Abstract
Confronting the profound public health concern of alcohol-induced liver damage calls for inventive therapeutic measures. The social, economic, and clinical ramifications are extensive and demand a comprehensive understanding. This thorough examination uncovers the complex relationship between alcohol intake and liver damage, with a special emphasis on the pivotal roles of the Toll-like receptor 4 (TLR4)/NF-κB p65 and CYP2E1/ROS/Nrf2 signalling networks. Different alcohol consumption patterns, determined by a myriad of factors, have significant implications for liver health, leading to a spectrum of adverse effects. The TLR4/NF-κB p65 pathway, a principal regulator of inflammation and immune responses, significantly contributes to various disease states when its balance is disrupted. Notably, the TLR4/MD-2-TNF-α pathway has been linked to non-alcohol related liver disease, while NF-κB activation is associated with alcohol-induced liver disease (ALD). The p65 subunit of NF-κB, primarily responsible for the release of inflammatory cytokines, hastens the progression of ALD. Breakthrough insights suggest that curcumin, a robust antioxidant and anti-inflammatory compound sourced from turmeric, effectively disrupts the TLR4/NF-κB p65 pathway. This heralds a new approach to managing alcohol-induced liver damage. Initial clinical trials support curcumin's therapeutic potential, highlighting its ability to substantially reduce liver enzyme levels. The narrative surrounding alcohol-related liver injury is gradually becoming more intricate, intertwining complex signalling networks such as TLR4/NF-κB p65 and CYP2E1/ROS/Nrf2. The protective role of curcumin against alcohol-related liver damage marks the dawn of new treatment possibilities. However, the full realisation of this promising therapeutic potential necessitates rigorous future research to definitively understand these complex mechanisms and establish curcumin's effectiveness and safety in managing alcohol-related liver disorders.
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Affiliation(s)
- Vetriselvan Subramaniyan
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysia
- Center for Transdisciplinary Research, Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu 600077, India
| | - Natasha Sura Anak Lubau
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysia
| | - Nobendu Mukerjee
- Department of Microbiology, Ramakrishna Mission Vivekananda Centenary Collage, Kolkata, West Bengal 700118, India
- Department of Health Sciences, Novel Global Community and Educational Foundation, Australia
| | - Vinoth Kumarasamy
- Department of Parasitology and Medical Entomology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, 56000 Cheras, Kuala Lumpur, Malaysia
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Stierschneider A, Wiesner C. Shedding light on the molecular and regulatory mechanisms of TLR4 signaling in endothelial cells under physiological and inflamed conditions. Front Immunol 2023; 14:1264889. [PMID: 38077393 PMCID: PMC10704247 DOI: 10.3389/fimmu.2023.1264889] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 11/08/2023] [Indexed: 12/18/2023] Open
Abstract
Toll-like receptor 4 (TLR4) are part of the innate immune system. They are capable of recognizing pathogen-associated molecular patterns (PAMPS) of microbes, and damage-associated molecular patterns (DAMPs) of damaged tissues. Activation of TLR4 initiates downstream signaling pathways that trigger the secretion of cytokines, type I interferons, and other pro-inflammatory mediators that are necessary for an immediate immune response. However, the systemic release of pro-inflammatory proteins is a powerful driver of acute and chronic inflammatory responses. Over the past decades, immense progress has been made in clarifying the molecular and regulatory mechanisms of TLR4 signaling in inflammation. However, the most common strategies used to study TLR4 signaling rely on genetic manipulation of the TLR4 or the treatment with agonists such as lipopolysaccharide (LPS) derived from the outer membrane of Gram-negative bacteria, which are often associated with the generation of irreversible phenotypes in the target cells or unintended cytotoxicity and signaling crosstalk due to off-target or pleiotropic effects. Here, optogenetics offers an alternative strategy to control and monitor cellular signaling in an unprecedented spatiotemporally precise, dose-dependent, and non-invasive manner. This review provides an overview of the structure, function and signaling pathways of the TLR4 and its fundamental role in endothelial cells under physiological and inflammatory conditions, as well as the advances in TLR4 modulation strategies.
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Affiliation(s)
| | - Christoph Wiesner
- Department Science & Technology, Institute Biotechnology, IMC Krems University of Applied Sciences, Krems, Austria
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43
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Liu X, Wang X, Zhang P, Fang Y, Liu Y, Ding Y, Zhang W. Intestinal homeostasis in the gut-lung-kidney axis: a prospective therapeutic target in immune-related chronic kidney diseases. Front Immunol 2023; 14:1266792. [PMID: 38022571 PMCID: PMC10646503 DOI: 10.3389/fimmu.2023.1266792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 10/17/2023] [Indexed: 12/01/2023] Open
Abstract
In recent years, the role of intestinal homeostasis in health has received increasing interest, significantly improving our understanding of the complex pathophysiological interactions of the gut with other organs. Microbiota dysbiosis, impaired intestinal barrier, and aberrant intestinal immunity appear to contribute to the pathogenesis of immune-related chronic kidney diseases (CKD). Meanwhile, the relationship between the pathological changes in the respiratory tract (e.g., infection, fibrosis, granuloma) and immune-related CKD cannot be ignored. The present review aimed to elucidate the new underlying mechanism of immune-related CKD. The lungs may affect kidney function through intestinal mediation. Communication is believed to exist between the gut and lung microbiota across long physiological distances. Following the inhalation of various pathogenic factors (e.g., particulate matter 2.5 mum or less in diameter, pathogen) in the air through the mouth and nose, considering the anatomical connection between the nasopharynx and lungs, gut microbiome regulates oxidative stress and inflammatory states in the lungs and kidneys. Meanwhile, the intestine participates in the differentiation of T cells and promotes the migration of various immune cells to specific organs. This better explain the occurrence and progression of CKD caused by upper respiratory tract precursor infection and suggests the relationship between the lungs and kidney complications in some autoimmune diseases (e.g., anti-neutrophil cytoplasm antibodies -associated vasculitis, systemic lupus erythematosus). CKD can also affect the progression of lung diseases (e.g., acute respiratory distress syndrome and chronic obstructive pulmonary disease). We conclude that damage to the gut barrier appears to contribute to the development of immune-related CKD through gut-lung-kidney interplay, leading us to establish the gut-lung-kidney axis hypothesis. Further, we discuss possible therapeutic interventions and targets. For example, using prebiotics, probiotics, and laxatives (e.g., Rhubarb officinale) to regulate the gut ecology to alleviate oxidative stress, as well as improve the local immune system of the intestine and immune communication with the lungs and kidneys.
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Affiliation(s)
- Xinyin Liu
- Department of Nephrology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, China
- Department of Traditional Chinese Medicine, Jiande First People’s Hospital, Jiande, Hangzhou, China
| | - Xiaoran Wang
- Department of Nephrology, The First People’s Hospital of Hangzhou Lin’an District, Hangzhou, China
| | - Peipei Zhang
- Department of Nephrology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, China
| | - Yiwen Fang
- The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yanyan Liu
- Department of Geriatric, Zhejiang Aged Care Hospital, Hangzhou, China
| | - Yueyue Ding
- Department of Geriatric, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Wen Zhang
- Department of Nephrology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, China
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44
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Dwivedi AK, Gornalusse GG, Siegel DA, Barbehenn A, Thanh C, Hoh R, Hobbs KS, Pan T, Gibson EA, Martin J, Hecht F, Pilcher C, Milush J, Busch MP, Stone M, Huang ML, Reppetti J, Vo PM, Levy CN, Roychoudhury P, Jerome KR, Hladik F, Henrich TJ, Deeks SG, Lee SA. A cohort-based study of host gene expression: tumor suppressor and innate immune/inflammatory pathways associated with the HIV reservoir size. PLoS Pathog 2023; 19:e1011114. [PMID: 38019897 PMCID: PMC10712869 DOI: 10.1371/journal.ppat.1011114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 12/11/2023] [Accepted: 11/01/2023] [Indexed: 12/01/2023] Open
Abstract
The major barrier to an HIV cure is the HIV reservoir: latently-infected cells that persist despite effective antiretroviral therapy (ART). There have been few cohort-based studies evaluating host genomic or transcriptomic predictors of the HIV reservoir. We performed host RNA sequencing and HIV reservoir quantification (total DNA [tDNA], unspliced RNA [usRNA], intact DNA) from peripheral CD4+ T cells from 191 ART-suppressed people with HIV (PWH). After adjusting for nadir CD4+ count, timing of ART initiation, and genetic ancestry, we identified two host genes for which higher expression was significantly associated with smaller total DNA viral reservoir size, P3H3 and NBL1, both known tumor suppressor genes. We then identified 17 host genes for which lower expression was associated with higher residual transcription (HIV usRNA). These included novel associations with membrane channel (KCNJ2, GJB2), inflammasome (IL1A, CSF3, TNFAIP5, TNFAIP6, TNFAIP9, CXCL3, CXCL10), and innate immunity (TLR7) genes (FDR-adjusted q<0.05). Gene set enrichment analyses further identified significant associations of HIV usRNA with TLR4/microbial translocation (q = 0.006), IL-1/NRLP3 inflammasome (q = 0.008), and IL-10 (q = 0.037) signaling. Protein validation assays using ELISA and multiplex cytokine assays supported these observed inverse host gene correlations, with P3H3, IL-10, and TNF-α protein associations achieving statistical significance (p<0.05). Plasma IL-10 was also significantly inversely associated with HIV DNA (p = 0.016). HIV intact DNA was not associated with differential host gene expression, although this may have been due to a large number of undetectable values in our study. To our knowledge, this is the largest host transcriptomic study of the HIV reservoir. Our findings suggest that host gene expression may vary in response to the transcriptionally active reservoir and that changes in cellular proliferation genes may influence the size of the HIV reservoir. These findings add important data to the limited host genetic HIV reservoir studies to date.
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Affiliation(s)
- Ashok K. Dwivedi
- Department of Medicine, Division of HIV, Infectious Diseases & Global Medicine, University of California, San Francisco, California, United States of America
| | - Germán G. Gornalusse
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
| | - David A. Siegel
- Department of Medicine, Division of HIV, Infectious Diseases & Global Medicine, University of California, San Francisco, California, United States of America
| | - Alton Barbehenn
- Department of Medicine, Division of HIV, Infectious Diseases & Global Medicine, University of California, San Francisco, California, United States of America
| | - Cassandra Thanh
- Department of Medicine, Division of Experimental Medicine, University of California San Francisco, California, United States of America
| | - Rebecca Hoh
- Department of Medicine, Division of HIV, Infectious Diseases & Global Medicine, University of California, San Francisco, California, United States of America
| | - Kristen S. Hobbs
- Department of Medicine, Division of Experimental Medicine, University of California San Francisco, California, United States of America
| | - Tony Pan
- Department of Medicine, Division of Experimental Medicine, University of California San Francisco, California, United States of America
| | - Erica A. Gibson
- Department of Medicine, Division of Experimental Medicine, University of California San Francisco, California, United States of America
| | - Jeffrey Martin
- Department of Biostatistics & Epidemiology, University of California San Francisco, California, United States of America
| | - Frederick Hecht
- Department of Medicine, Division of HIV, Infectious Diseases & Global Medicine, University of California, San Francisco, California, United States of America
| | - Christopher Pilcher
- Department of Medicine, Division of HIV, Infectious Diseases & Global Medicine, University of California, San Francisco, California, United States of America
| | - Jeffrey Milush
- Department of Medicine, Division of Experimental Medicine, University of California San Francisco, California, United States of America
| | - Michael P. Busch
- Vitalant Blood Bank, San Francisco, California, United States of America
| | - Mars Stone
- Vitalant Blood Bank, San Francisco, California, United States of America
| | - Meei-Li Huang
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, United States of America
| | - Julieta Reppetti
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
- Universidad de Buenos Aires (UBA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Fisiología y Biofísica Bernardo Houssay (IFIBIO- Houssay), Buenos Aires, Argentina
| | - Phuong M. Vo
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
| | - Claire N. Levy
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
| | - Pavitra Roychoudhury
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, United States of America
| | - Keith R. Jerome
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, United States of America
| | - Florian Hladik
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, Washington, United States of America
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
- Department of Medicine, Division of Allergy and Infectious Diseases, University of Washington, Seattle, Washington, United States of America
| | - Timothy J. Henrich
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
| | - Steven G. Deeks
- Department of Medicine, Division of HIV, Infectious Diseases & Global Medicine, University of California, San Francisco, California, United States of America
| | - Sulggi A. Lee
- Department of Medicine, Division of HIV, Infectious Diseases & Global Medicine, University of California, San Francisco, California, United States of America
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Abstract
Septic shock can be caused by a variety of mechanisms including direct effects of bacterial toxins such as endotoxin. Annually, approximately 5-7 million patients worldwide develop sepsis with very high endotoxin activity in the blood and more than half die. The term endotoxic septic shock has been used for these patients but it is important to emphasize that endotoxin may be a factor in all forms of septic shock including non-bacterial etiologies like COVID-19 since translocation of bacterial products is a common feature of septic shock. A pattern of organ failure including hepatic dysfunction, acute kidney injury and various forms of endothelial dysfunction ranging from disseminated intravascular coagulation to thrombotic microangiopathy characterize endotoxic septic shock. However, while characteristic, the clinical phenotype is not unique to patients with high endotoxin, and the diagnosis relies on the measurement of endotoxin activity in addition to clinical assessment. Therapies for endotoxic septic shock are limited with immune modulating therapies under investigation and extracorporeal blood purification still controversial in many parts of the world.
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Affiliation(s)
- John A Kellum
- Department of Critical Care Medicine, Center for Critical Care Nephrology, University of Pittsburgh, 600 Scaife Hall, 3550 Terrace Street, Pittsburgh, PA, 15261, USA.
- Spectral Medical Inc, Toronto, ON, Canada.
| | - Claudio Ronco
- International Renal Research Institute of Vicenza, IRRIV Foundation, Department of Nephrology, Dialysis and Transplantation, St. Bortolo Hospital, aULSS8 Berica, Via Rodolfi, 37, 36100, Vicenza, Italy
- Department of Medicine (DIMED), University of Padua, Via Giustiniani, 2, 35128, Padua, Italy
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46
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Leinardi R, Petriglieri JR, Pochet A, Yakoub Y, Lelong M, Lescoat A, Turci F, Lecureur V, Huaux F. Distinct Pro-Inflammatory Mechanisms Elicited by Short and Long Amosite Asbestos Fibers in Macrophages. Int J Mol Sci 2023; 24:15145. [PMID: 37894824 PMCID: PMC10606797 DOI: 10.3390/ijms242015145] [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: 08/07/2023] [Revised: 10/03/2023] [Accepted: 10/06/2023] [Indexed: 10/29/2023] Open
Abstract
While exposure to long amphibolic asbestos fibers (L > 10 µm) results in the development of severe diseases including inflammation, fibrosis, and mesothelioma, the pathogenic activity associated with short fibers (L < 5 µm) is less clear. By exposing murine macrophages to short (SFA) or long (LFA) fibers of amosite asbestos different in size and surface chemistry, we observed that SFA internalization resulted in pyroptotic-related immunogenic cell death (ICD) characterized by the release of the pro-inflammatory damage signal (DAMP) IL-1α after inflammasome activation and gasdermin D (GSDMD)-pore formation. In contrast, macrophage responses to non-internalizable LFA were associated with tumor necrosis factor alpha (TNF-α) release, caspase-3 and -7 activation, and apoptosis. SFA effects exclusively resulted from Toll-like receptor 4 (TLR4), a pattern-recognition receptor (PRR) recognized for its ability to sense particles, while the response to LFA was elicited by a multifactorial ignition system involving the macrophage receptor with collagenous structure (SR-A6 or MARCO), reactive oxygen species (ROS) cascade, and TLR4. Our findings indicate that asbestos fiber size and surface features play major roles in modulating ICD and inflammatory pathways. They also suggest that SFA are biologically reactive in vitro and, therefore, their inflammatory and toxic effects in vivo should not be underestimated.
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Affiliation(s)
- Riccardo Leinardi
- Louvain Centre for Toxicology and Applied Pharmacology (LTAP), Institute de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium; (A.P.); (Y.Y.); (F.H.)
| | - Jasmine Rita Petriglieri
- “G. Scansetti” Interdepartmental Centre for Studies on Asbestos and Other Toxic Particulates, University of Turin, 10125 Turin, Italy; (J.R.P.); (F.T.)
- Department of Earth Sciences, University of Turin, 10125 Turin, Italy
| | - Amandine Pochet
- Louvain Centre for Toxicology and Applied Pharmacology (LTAP), Institute de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium; (A.P.); (Y.Y.); (F.H.)
| | - Yousof Yakoub
- Louvain Centre for Toxicology and Applied Pharmacology (LTAP), Institute de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium; (A.P.); (Y.Y.); (F.H.)
| | - Marie Lelong
- Université de Rennes, CHU Rennes, INSERM, EHESP, Irset (Institut de Recherche en Santé, Environnement et Travail)—UMR_S 1085, 35000 Rennes, France; (M.L.); (A.L.); (V.L.)
| | - Alain Lescoat
- Université de Rennes, CHU Rennes, INSERM, EHESP, Irset (Institut de Recherche en Santé, Environnement et Travail)—UMR_S 1085, 35000 Rennes, France; (M.L.); (A.L.); (V.L.)
- Department of Internal Medicine and Clinical Immunology, Rennes University Hospital, 35000 Rennes, France
| | - Francesco Turci
- “G. Scansetti” Interdepartmental Centre for Studies on Asbestos and Other Toxic Particulates, University of Turin, 10125 Turin, Italy; (J.R.P.); (F.T.)
- Department of Chemistry, University of Turin, 10125 Turin, Italy
| | - Valérie Lecureur
- Université de Rennes, CHU Rennes, INSERM, EHESP, Irset (Institut de Recherche en Santé, Environnement et Travail)—UMR_S 1085, 35000 Rennes, France; (M.L.); (A.L.); (V.L.)
| | - François Huaux
- Louvain Centre for Toxicology and Applied Pharmacology (LTAP), Institute de Recherche Expérimentale et Clinique (IREC), Université Catholique de Louvain (UCLouvain), 1200 Brussels, Belgium; (A.P.); (Y.Y.); (F.H.)
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Song M, Li J, Sun J, Yang X, Zhang X, Lv K, Xu Y, Shi J. DNMT1-mediated DNA methylation in toll-like receptor 4 (TLR4) inactivates NF-κB signal pathway-triggered pyroptotic cell death and cellular inflammation to ameliorate lipopolysaccharides (LPS)-induced osteomyelitis. Mol Cell Probes 2023; 71:101922. [PMID: 37459905 DOI: 10.1016/j.mcp.2023.101922] [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: 04/22/2023] [Revised: 07/13/2023] [Accepted: 07/15/2023] [Indexed: 08/04/2023]
Abstract
Toll-like receptor 4 (TLR4) plays a critical role in various human diseases, and was associated with pyroptotic cell death and inflammatory responses. DNA methylation, which has stable and reversible properties, has been reported to alter the expression of target genes, including TLR4. However, the role of methylated TLR4 in osteomyelitis (OM) and the underlying molecular mechanisms remain unclear. RNA sequencing was used to identify differentially expressed genes and associated signaling pathways. RT-qPCR, Western blot, emzyme-linked immunosorbent assay (ELISA), cell counting kit-8 (CCK-8) and LDH assay kit were used to detect mRNA and protein expression of relevant genes, cell viability and the LDH activity, respectively. TLR4 methylation was detected by methylation-specific PCR (MSP) and verified by Chromatin immunoprecipitation (ChIP). Here, we found that DNA methyltransferase-1 (DNMT1)-mediated TLR4 demethylation significantly suppressed lipopolysaccharides (LPS)-induced pyroptosis and inflammatory response by inhibiting the TLR4/nuclear transcription factor-kappa B (NF-κB) axis. First, we confirmed TLR4 as the study target by mRNA transcriptome sequencing analysis, and TLR4 was observably high-expressed in both OM patients and LPS-treated osteoblastic MC3T3-E1. Then, we found that downregulation of DNMT1 blocked TLR4 promoter methylation modification, resulting in upregulation of TLR4. Simultaneously, functional experiments indicated that suppression of TLR4 or overexpression of DNMT1 promoted cell proliferation and inhibited cell pyroptosis and inflammation in LPS-induced MC3T3-E1, while upregulation of TLR4 restored the effects of DNMT1 silencing on OM progression. In addition, TLR4 elevated phosphorylation of IκB-α and NF-κB p65 in the NF-κB signal pathway, and inhibition of TLR4 or the NF-κB inhibitor PDTC reversed the influence of inhibition of DNMT1. In conclusion, our study demonstrated that DNMT1-mediated TLR4 DNA methylation alleviated LPS-induced OM by inhibiting the NF-κB signaling pathway.
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Affiliation(s)
- Muguo Song
- Kunming Medical University Graduate School, Kunming, 650500, China; Department of Orthopaedics, 920 Hospital of the Joint Logistics Support Force of the PLA, Kunming, 650032, China.
| | - Junyi Li
- Kunming Medical University Graduate School, Kunming, 650500, China; Department of Orthopaedics, 920 Hospital of the Joint Logistics Support Force of the PLA, Kunming, 650032, China.
| | - Jian Sun
- Kunming Medical University Graduate School, Kunming, 650500, China; Department of Orthopaedics, 920 Hospital of the Joint Logistics Support Force of the PLA, Kunming, 650032, China.
| | - Xiaoyong Yang
- Department of Orthopaedics, 920 Hospital of the Joint Logistics Support Force of the PLA, Kunming, 650032, China.
| | - Xijiao Zhang
- Kunming Medical University Graduate School, Kunming, 650500, China; Department of Orthopaedics, 920 Hospital of the Joint Logistics Support Force of the PLA, Kunming, 650032, China.
| | - Kehan Lv
- Kunming Medical University Graduate School, Kunming, 650500, China; Department of Orthopaedics, 920 Hospital of the Joint Logistics Support Force of the PLA, Kunming, 650032, China.
| | - Yongqing Xu
- Department of Orthopaedics, 920 Hospital of the Joint Logistics Support Force of the PLA, Kunming, 650032, China.
| | - Jian Shi
- Department of Orthopaedics, 920 Hospital of the Joint Logistics Support Force of the PLA, Kunming, 650032, China.
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Ranneh Y, Fadel A, Md Akim A, Idris I, Ilesanmi-Oyelere BL, Ismail LC. Effect of Dietary Fiber Supplementation on Metabolic Endotoxemia: A Protocol for Systematic Review and Meta-Analysis of Randomized Clinical Trials. Methods Protoc 2023; 6:84. [PMID: 37736967 PMCID: PMC10514783 DOI: 10.3390/mps6050084] [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: 07/18/2023] [Revised: 09/05/2023] [Accepted: 09/06/2023] [Indexed: 09/23/2023] Open
Abstract
Introduction: Metabolic endotoxemia (ME) is the main cause of sub-clinical chronic inflammation, which subsequently triggers the onset of several chronic diseases. However, recent reports have indicated that dietary fiber (DF) contributes significantly to ameliorating ME and inflammation. This protocol aims to provide an outline of all procedures in synthesizing the available data on the effect of DF against ME. Methods: Following the PRISMA 2020 guidelines for preparing protocols, this protocol was registered in the International Prospective Registry of Systematic Reviews (PROSPERO) with registration number (CRD42023417833). In this review, we specifically focused on the inclusion of clinical trials that met the following criteria: they were published or available as preprints, employed random, quasi-random, or cross-over designs, and were exclusively documented in the English language. Clinical medical subject headings (MeSH) as search terms were used on prominent databases such as MEDLINE, COCHRANE library, PubMed, World Health Organization International Clinical Trials Registry Platforms, and US National Institutes of Health Ongoing Trials Register Clinicaltrials.gov. Results and discussion: This protocol will guide the exploration of articles that report changes in ME biomarkers in subjects supplemented with DF. The findings of this protocol will ensure a comprehensive evaluation of available evidence, provide a quantitative summary, identify patterns and trends, enhance statistical power, and address heterogeneity, which collectively will clarify the optimal types, doses, and duration of DF interventions for managing ME and low-grade inflammation. Ethics and dissemination: The quantitative data of clinical trials will be collected, and a meta-analysis will be performed using RevMan V.5.3 software. Therefore, no ethical approval is required.
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Affiliation(s)
- Yazan Ranneh
- Department of Nutrition and Dietetics, College of Pharmacy, Al Ain University, Abu Dhabi P.O. Box 112612, United Arab Emirates
| | - Abdulmannan Fadel
- Research Institute for Sport and Exercise Sciences, School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool L3 3AF, UK;
| | - Abdah Md Akim
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia;
| | - Iskandar Idris
- School of Medicine, University of Nottingham, Royal Derby Hospital, Derby DE22 3NE, UK;
| | | | - Leila Cheikh Ismail
- Department of Clinical Nutrition and Dietetics, University of Sharjah, Sharjah P.O. Box 72772, United Arab Emirates;
- Nuffield Department of Women’s & Reproductive Health, University of Oxford, Oxford OX3 9DU, UK
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49
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Devi SB, Kumar S. Designing a multi-epitope chimeric protein from different potential targets: A potential vaccine candidate against Plasmodium. Mol Biochem Parasitol 2023; 255:111560. [PMID: 37084957 DOI: 10.1016/j.molbiopara.2023.111560] [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: 07/13/2022] [Revised: 03/30/2023] [Accepted: 04/03/2023] [Indexed: 04/23/2023]
Abstract
Malaria is an infectious disease that has been a continuous threat to mankind since the time immemorial. Owing to the complex multi-staged life cycle of the plasmodium parasite, an effective malaria vaccine which is fully protective against the parasite infection is urgently needed to deal with the challenges. In the present study, essential parasite proteins were identified and a chimeric protein with multivalent epitopes was generated. The designed chimeric protein consists of best potential B and T cell epitopes from five different essential parasite proteins. Physiochemical studies of the chimeric protein showed that the modeled vaccine construct was thermo-stable, hydrophilic and antigenic in nature. And the binding of the vaccine construct with Toll-like receptor-4 (TLR-4) as revealed by the molecular docking suggests the possible interaction and role of the vaccine construct in activating the innate immune response. The constructed vaccine being a chimeric protein containing epitopes from different potential candidates could target different stages or pathways of the parasite. Moreover, the approach used in this study is time and cost effective, and can be applied in the discoveries of new potential vaccine targets for other pathogens.
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Affiliation(s)
- Sanasam Bijara Devi
- Department of Life science & Bioinformatics, Assam University, Silchar 788011 India.
| | - Sanjeev Kumar
- Department of Life science & Bioinformatics, Assam University, Silchar 788011 India
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50
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Johnson MG, Adam E, Watt A, Page AE. Effects of High-Speed Training on Messenger RNA Expression in Two-Year-Old Thoroughbred Racehorses. J Equine Vet Sci 2023; 128:104892. [PMID: 37433342 DOI: 10.1016/j.jevs.2023.104892] [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: 05/03/2023] [Revised: 07/06/2023] [Accepted: 07/06/2023] [Indexed: 07/13/2023]
Abstract
Accumulating high-speed exercise has been identified as a significant risk factor for catastrophic injuries in racing Thoroughbreds. Injuries, regardless of severity, are a main cause of withdrawal from the racing industry, raising animal welfare concerns and resulting in significant economic losses. While most of the current literature focuses on injuries incurred during racing rather than training, the present study aims to help fill this gap. As such, peripheral blood was collected weekly, prior to exercise or administration of medication, from eighteen, two-year-old Thoroughbreds throughout their first season of race training. Messenger RNA (mRNA) was isolated and used to analyze the expression of 34 genes via RT-qPCR. Statistical analysis of the noninjured horses (n = 6) showed that 13 genes were significantly correlated with increasing average weekly high-speed furlong performance. Additionally, there was a negative correlation for CXCL1, IGFBP3, and MPO with both cumulative high-speed furlongs and week of training for all horses. Comparison of both groups showed opposing correlations between the anti-inflammatory index (IL1RN, IL-10, and PTGS1) and average weekly high-speed furlong performance. Furthermore, evaluation of training effects on mRNA expression during the weeks surrounding injury, showed differences between groups in IL-13 and MMP9 at -3 and -2 weeks prior to injury. While some previously reported relationships between exercise adaptation and mRNA expression were not noted in this study, this may have been due to the small sample size. Several novel correlations, however, were identified and warrant further investigation as markers of exercise adaptation or potential risk for injury.
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Affiliation(s)
- Mackenzie G Johnson
- Maxwell H. Gluck Equine Research Center, University of Kentucky, Lexington, KY
| | - Emma Adam
- Maxwell H. Gluck Equine Research Center, University of Kentucky, Lexington, KY
| | | | - Allen E Page
- Maxwell H. Gluck Equine Research Center, University of Kentucky, Lexington, KY.
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