1
|
Guo Y, Sun Y, Li Z, Zuo C, Liu X, Chen Y, Xun Z, Liu J, Mei Y, Min JJ, Wen M, Zheng JH, Tan W. S100a8/a9 regulated by LPS/TLR4 axis plays an important role in Salmonella-based tumor therapy and host defense. Int J Cancer 2024; 155:2080-2093. [PMID: 39129048 DOI: 10.1002/ijc.35128] [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: 04/22/2024] [Revised: 06/02/2024] [Accepted: 07/08/2024] [Indexed: 08/13/2024]
Abstract
Bacteria are ideal anticancer agents and carriers due to their unique capabilities that are convenient in genetic manipulation, tumor-specific targeting, and deep-tissue penetration. However, the specific molecular mechanisms of bacteria-mediated cancer therapy (BMCT) have not been clarified. In this study, we found that TLR4 signaling pathway is critical for Salmonella-mediated tumor targeting, tumor suppression, and liver and spleen protection. TLR4 knockout in mice decreased the levels of cytokines and chemokines, such as S100a8, S100a9, TNF-α, and IL-1β, in tumor microenvironments (TMEs) after Salmonella treatment, which inhibited tumor cell death and nutrient release, led to reduced bacterial contents in tumors and attenuated antitumor efficacy in a negative feedback manner. Importantly, we found that S100a8 and S100a9 played a leading role in Salmonella-mediated cancer therapy (SMCT). The antitumor efficacy was abrogated and liver damage was prominent when blocked with a specific inhibitor. These findings elucidated the mechanism of Salmonella-mediated tumor targeting, suppression, and host antibacterial defense, providing insights into clinical cancer therapeutics.
Collapse
Affiliation(s)
- Yanxia Guo
- The Affiliated Xiangtan Central Hospital of Hunan University, School of Biomedical Sciences, Hunan University, Changsha, China
| | - Yujie Sun
- The Affiliated Xiangtan Central Hospital of Hunan University, School of Biomedical Sciences, Hunan University, Changsha, China
| | - Zhongying Li
- The Affiliated Xiangtan Central Hospital of Hunan University, School of Biomedical Sciences, Hunan University, Changsha, China
| | - Chaohui Zuo
- Department of Gastroduodenal and Pancreatic Surgery, Hunan Cancer Hospital, Changsha, Hunan, China
| | - Xiaoqing Liu
- The Affiliated Xiangtan Central Hospital of Hunan University, School of Biomedical Sciences, Hunan University, Changsha, China
| | - Yu Chen
- The Affiliated Xiangtan Central Hospital of Hunan University, School of Biomedical Sciences, Hunan University, Changsha, China
| | - Zhen Xun
- College of Chemistry and Chemical Engineering, Hunan University, Changsha, China
| | - Jinling Liu
- The Affiliated Xiangtan Central Hospital of Hunan University, School of Biomedical Sciences, Hunan University, Changsha, China
- College of Biology, Hunan University, Changsha, China
| | - Yang Mei
- The Affiliated Xiangtan Central Hospital of Hunan University, School of Biomedical Sciences, Hunan University, Changsha, China
| | - Jung-Joon Min
- Institute for Molecular Imaging and Theranostics, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Min Wen
- Department of Neurosurgery, the second affiliated hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Jin Hai Zheng
- The Affiliated Xiangtan Central Hospital of Hunan University, School of Biomedical Sciences, Hunan University, Changsha, China
| | - Wenzhi Tan
- The Affiliated Xiangtan Central Hospital of Hunan University, School of Biomedical Sciences, Hunan University, Changsha, China
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha, Hunan, China
| |
Collapse
|
2
|
Bhat RR, Bhat NN, Shabir A, Mir MUR, Ahmad SB, Hussain I, Hussain SA, Ali A, Shamim K, Rehman MU. SNP Analysis of TLR4 Promoter and Its Transcriptional Factor Binding Profile in Relevance to Bovine Subclinical Mastitis. Biochem Genet 2024; 62:3605-3623. [PMID: 38158465 DOI: 10.1007/s10528-023-10578-4] [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] [Accepted: 10/28/2023] [Indexed: 01/03/2024]
Abstract
Bovine mastitis is a complex infectious disease that develops in the mammary gland, predominantly caused by a bacterial infection of mammary tissue. Genetic variability of mastitis is well established and depends upon different quantitative trait loci (QTL) related to mastitis resistance or susceptibility. The susceptibility is often attributed to single-nucleotide polymorphisms (SNPs) in the variable cow breed genomes. Several global investigative attempts have resulted in studies mapping mastitis to the variations in the relevant genes. Reports have been attributed to dramatic genetic expression changes in Toll-Like Receptor 4 (TLR4) genes in mastitis-positive cows. However, the mechanism behind this variable genetic expression of TLR4 genes has been studied poorly. The present study aims to investigate SCM through various screening tests like somatic cell count (SCC), electric conductivity (EC), pH, and California mastitis test (CMT) in milk samples. This study also aims to investigate possible mechanisms behind this variable expression of TLR4 by comparative SNP evaluation and transcriptional factor profile mining. So that the important genetic mutations and effects thereof can be exploited in selecting specific breeds with higher mastitis resistance and milk yield. Seventy Holstein Frisian (HF) crossbred dairy cows were selected in the present study. The animals were screened based on various diagnostic tests (SCC, pH, EC, and CMT). Blood samples (5 mL) were collected for extraction of DNA followed by amplification of PPR1 and PPR2 of the promoter region and 5'UTR of the bovine TLR4 gene using specific primers. Sanger's enzymatic DNA sequencing technique sequenced the amplified PCR products. Further, the identification of SNPs was done through various bioinformatic tools used in this study. The findings of the present study revealed that CMT, EC, pH, and SCC could be used for the early detection of subclinical mastitis. In the present study, a significant increase in the EC, pH, and SCC in milk samples of animals affected with SCM was found in comparison to the healthy animals. The present study also revealed 16 SNPs falling in TLR4 promoter and 5' untranslated region (5'UTR) sequences in mastitis-positive genotypes compared to reference genomes. The study also investigates the potential transcriptional factor program deployed in response to variable mastitis development resistance. In the present study, the allelic and genotype frequencies of all SNP variants in the three regions viz., PPR1, PPR2, and 5'UTR, were the same indicating the absence of heterozygous condition at the respective loci. The present study has wide applicability for researchers developing mastitis-resistant breeding programs and the data generated may aid in the selection of better genetic breeds. The transcription factor binding profiles can serve as concrete leads about the studies on bovine mastitis at the molecular level and may also aid global research groups working on transcription factor (TF)-based molecular pathology of mastitis.
Collapse
Affiliation(s)
- Rahil Razak Bhat
- Division of Veterinary Biochemistry FVSc & AH, SKUAST-Kashmir, Shuhama, Alusteng, Srinagar, J&K, 190006, India
| | - Nadiem Nazir Bhat
- Division of Veterinary Biochemistry FVSc & AH, SKUAST-Kashmir, Shuhama, Alusteng, Srinagar, J&K, 190006, India
| | - Ambreen Shabir
- Division of Fish Genetics and Biotechnology, Faculty of Fisheries, SKUAST-Kashmir, Rangil, Ganderbal, J&K, 191201, India
| | - Manzoor Ur Rahman Mir
- Division of Veterinary Biochemistry FVSc & AH, SKUAST-Kashmir, Shuhama, Alusteng, Srinagar, J&K, 190006, India.
| | - Sheikh Bilal Ahmad
- Division of Veterinary Biochemistry FVSc & AH, SKUAST-Kashmir, Shuhama, Alusteng, Srinagar, J&K, 190006, India
| | - Ishraq Hussain
- Division of Veterinary Biochemistry FVSc & AH, SKUAST-Kashmir, Shuhama, Alusteng, Srinagar, J&K, 190006, India
| | - Syed Ashaq Hussain
- Division of Veterinary Clinical Medicine, Ethics and Jurisprudence, FVSc & AH, SKUAST-Kashmir, Shuhama, Alusteng, Srinagar, J&K, 190006, India
| | - Aarif Ali
- Division of Veterinary Biochemistry FVSc & AH, SKUAST-Kashmir, Shuhama, Alusteng, Srinagar, J&K, 190006, India.
| | - Kashif Shamim
- National Centre for Natural Products Research, University of Mississippi, Oxford, MS, 38677, USA
| | - Muneeb U Rehman
- Department of Clinical Pharmacy, College of Pharmacy, King Saud University, 11451, Riyadh, Saudi Arabia
| |
Collapse
|
3
|
Gerber-Tichet E, Blanchet FP, Majzoub K, Kremer EJ. Toll-like receptor 4 - a multifunctional virus recognition receptor. Trends Microbiol 2024:S0966-842X(24)00171-9. [PMID: 39179422 DOI: 10.1016/j.tim.2024.07.001] [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: 02/28/2024] [Revised: 05/30/2024] [Accepted: 07/02/2024] [Indexed: 08/26/2024]
Abstract
Since the initial description of Toll receptors in Drosophila and their mammalian counterparts Toll-like receptors (TLRs), numerous fundamental and applied studies have explored their crucial role as sensors of pathogen-associated molecular patterns (PAMPs). Among the ten human TLRs, TLR4 is particularly well known for its ability to detect lipopolysaccharides (LPS), a component of the Gram-negative bacterial cell wall. In addition to its archetypal functions, TLR4 is also a versatile virus sensor. This review provides a background on the discovery of TLR4 and how this knowledge laid a foundation for characterization of its diverse roles in antiviral responses, examined through genetic, biochemical, structural, and immunological approaches. These advances have led to a deeper understanding of the molecular functions that enable TLR4 to orchestrate multi-nodal control by professional antigen-presenting cells (APCs) to initiate appropriate and regulated antiviral immune responses.
Collapse
Affiliation(s)
- Elina Gerber-Tichet
- Institut de Génétique Moléculaire de Montpellier, Université de Montpellier, CNRS UMR 5535, 34090 Montpellier, France
| | - Fabien P Blanchet
- Institut de Recherche en Infectiologie de Montpellier, Université de Montpellier, CNRS UMR 9004, 34090 Montpellier, France
| | - Karim Majzoub
- Institut de Génétique Moléculaire de Montpellier, Université de Montpellier, CNRS UMR 5535, 34090 Montpellier, France
| | - Eric J Kremer
- Institut de Génétique Moléculaire de Montpellier, Université de Montpellier, CNRS UMR 5535, 34090 Montpellier, France.
| |
Collapse
|
4
|
Saleki K, Alijanizadeh P, Javanmehr N, Rezaei N. The role of Toll-like receptors in neuropsychiatric disorders: Immunopathology, treatment, and management. Med Res Rev 2024; 44:1267-1325. [PMID: 38226452 DOI: 10.1002/med.22012] [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: 04/08/2022] [Revised: 10/20/2023] [Accepted: 12/20/2023] [Indexed: 01/17/2024]
Abstract
Neuropsychiatric disorders denote a broad range of illnesses involving neurology and psychiatry. These disorders include depressive disorders, anxiety, schizophrenia, bipolar disorder, attention deficit hyperactivity disorder, autism spectrum disorders, headaches, and epilepsy. In addition to their main neuropathology that lies in the central nervous system (CNS), lately, studies have highlighted the role of immunity and neuroinflammation in neuropsychiatric disorders. Toll-like receptors (TLRs) are innate receptors that act as a bridge between the innate and adaptive immune systems via adaptor proteins (e.g., MYD88) and downstream elements; TLRs are classified into 13 families that are involved in normal function and illnesses of the CNS. TLRs expression affects the course of neuropsychiatric disorders, and is influenced during their pharmacotherapy; For example, the expression of multiple TLRs is normalized during the major depressive disorder pharmacotherapy. Here, the role of TLRs in neuroimmunology, treatment, and management of neuropsychiatric disorders is discussed. We recommend longitudinal studies to comparatively assess the cell-type-specific expression of TLRs during treatment, illness progression, and remission. Also, further research should explore molecular insights into TLRs regulation and related pathways.
Collapse
Affiliation(s)
- Kiarash Saleki
- Student Research Committee, Babol University of Medical Sciences, Babol, Iran
- USERN Office, Babol University of Medical Sciences, Babol, Iran
- Department of e-Learning, Virtual School of Medical Education and Management, Shahid Beheshti University of Medical Sciences (SBMU), Tehran, Iran
| | - Parsa Alijanizadeh
- Student Research Committee, Babol University of Medical Sciences, Babol, Iran
- USERN Office, Babol University of Medical Sciences, Babol, Iran
| | - Nima Javanmehr
- Student Research Committee, Babol University of Medical Sciences, Babol, Iran
- USERN Office, Babol University of Medical Sciences, Babol, Iran
| | - Nima Rezaei
- Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| |
Collapse
|
5
|
Gentile A, Fulgione A, Auzino B, Iovane V, Gallo D, Garramone R, Iaccarino N, Randazzo A, Iovane G, Cuomo P, Capparelli R, Iannelli D. In vivo biological validation of in silico analysis: A novel approach for predicting the effects of TLR4 exon 3 polymorphisms on brucellosis. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2024; 118:105552. [PMID: 38218390 DOI: 10.1016/j.meegid.2024.105552] [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: 11/30/2023] [Revised: 01/09/2024] [Accepted: 01/10/2024] [Indexed: 01/15/2024]
Abstract
The role of the Toll-like receptor 4 (TLR4) is of recognising intracellular and extracellular pathogens and of activating the immune response. This process can be compromised by single nucleotide polymorphisms (SNPs) which might affect the activity of several TLRs. The aim of this study is of ascertaining whether SNPs in the TLR4 of Bubalus bubalis infected by Brucella abortus, compromise the protein functionality. For this purpose, a computational analysis was performed. Next, computational predictions were confirmed by performing genotyping analysis. Finally, NMR-based metabolomics analysis was performed to identify potential biomarkers for brucellosis. The results indicate two SNPs (c. 672 A > C and c. 902 G > C) as risk factor for brucellosis in Bubalus bubalis, and three metabolites (lactate, 3-hydroxybutyrate and acetate) as biological markers for predicting the risk of developing the disease. These metabolites, together with TLR4 structural modifications in the MD2 interaction domain, are a clear signature of the immune system alteration during diverse Gram-negative bacterial infections. This suggests the possibility to extend this study to other pathogens, including Mycobacterium tuberculosis. In conclusion, this study combines multidisciplinary approaches to evaluate the biological and structural effects of SNPs on protein function.
Collapse
Affiliation(s)
- Antonio Gentile
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples 80055, Italy
| | - Andrea Fulgione
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples 80055, Italy
| | - Barbara Auzino
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples 80055, Italy
| | - Valentina Iovane
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples 80055, Italy
| | - Daniela Gallo
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples 80055, Italy
| | - Raffaele Garramone
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples 80055, Italy
| | - Nunzia Iaccarino
- Department of Pharmacy, University of Naples Federico II, Naples 80131, Italy
| | - Antonio Randazzo
- Department of Pharmacy, University of Naples Federico II, Naples 80131, Italy
| | - Giuseppe Iovane
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, Naples 80137, Italy
| | - Paola Cuomo
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples 80055, Italy
| | - Rosanna Capparelli
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples 80055, Italy.
| | - Domenico Iannelli
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples 80055, Italy
| |
Collapse
|
6
|
Flores-Gonzalez J, Chavez-Galan L, Falfán-Valencia R, Roldán IB, Fricke-Galindo I, Veronica-Aguilar A, Martínez-Morales A, Hernández-Zenteno RDJ, Guzmán-Guzmán IP, Pérez-Rubio G. Variant rs4986790 of toll-like receptor 4 affects the signaling and induces cell dysfunction in patients with severe COVID-19. Int J Infect Dis 2024; 138:102-109. [PMID: 38029833 DOI: 10.1016/j.ijid.2023.11.032] [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: 09/18/2023] [Revised: 10/18/2023] [Accepted: 11/23/2023] [Indexed: 12/01/2023] Open
Abstract
OBJECTIVES We investigated the expression of toll-like receptor (TLR)-4 on the cell surface of innate and adaptive cells from patients with COVID-19 carrying the rs4986790 GG genotype in the TLR4 gene and the functional profile of these cells. METHODS We included 1169 hospitalized patients with COVID-19. The rs4986790 in TLR4 was identified by real-time polymerase chain reaction. Peripheral blood mononuclear cells were isolated and cultured to evaluate TLR-4 expression on immune cells. Supernatants recovered culture assays were stored, and we measured cytokines and cytotoxic molecules. RESULTS We showed that the rs4986790 (GG) was significantly associated (P = 0.0310) with severe COVID-19. Cells of patients with COVID-19 carrying the GG genotype have increased the frequency of monocytes and activated naïve and non-switched B cells positive to TLR-4 when cells are stimulated with lipopolysaccharide and with spike protein of SARS-CoV-2. Also, cells from patients with GG COVID-19 cannot produce pro-inflammatory cytokines after lipopolysaccharide stimulus, but they are high producers of cytotoxic molecules at baseline. CONCLUSIONS The rs4986790 GG genotype of the TLR4 is associated with the risk of COVID-19 and acute respiratory distress syndrome. Peripheral blood mononuclear cells of patients carrying the rs4986790 (TLR4) GG genotype had a limited delivery of pro-inflammatory cytokines compared to the AA and AG genotypes in which TLR-4 stimulation induces IL-10, IL-6, tumor necrosis factor-α, and Fas ligand production.
Collapse
Affiliation(s)
- Julio Flores-Gonzalez
- Laboratory of Integrative Immunology, Instituto Nacional de Enfermedades Respiratorias Ismael Cosio Villegas, Mexico City, Mexico
| | - Leslie Chavez-Galan
- Laboratory of Integrative Immunology, Instituto Nacional de Enfermedades Respiratorias Ismael Cosio Villegas, Mexico City, Mexico
| | - Ramcés Falfán-Valencia
- HLA Laboratory, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico
| | - Ivette Buendía Roldán
- Translational Research Laboratory on Aging and Pulmonary Fibrosis, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico
| | - Ingrid Fricke-Galindo
- HLA Laboratory, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico
| | - Abigail Veronica-Aguilar
- HLA Laboratory, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico
| | - Alfonso Martínez-Morales
- HLA Laboratory, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico
| | | | - Iris Paola Guzmán-Guzmán
- Faculty of Chemical-Biological Sciences, Universidad Autónoma de Guerrero, Chilpancingo, Guerrero, Mexico
| | - Gloria Pérez-Rubio
- HLA Laboratory, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico City, Mexico.
| |
Collapse
|
7
|
Vlk AM, Prantner D, Shirey KA, Perkins DJ, Buzza MS, Thumbigere-Math V, Keegan AD, Vogel SN. M2a macrophages facilitate resolution of chemically-induced colitis in TLR4-SNP mice. mBio 2023; 14:e0120823. [PMID: 37768050 PMCID: PMC10653841 DOI: 10.1128/mbio.01208-23] [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: 05/10/2023] [Accepted: 07/18/2023] [Indexed: 09/29/2023] Open
Abstract
IMPORTANCE Inflammatory bowel disease (IBD), including Crohn's disease and ulcerative colitis, impacts millions of individuals worldwide and severely impairs the quality of life for patients. Dysregulation of innate immune signaling pathways reduces barrier function and exacerbates disease progression. Macrophage (Mφ) signaling pathways are potential targets for IBD therapies. While multiple treatments are available for IBD, (i) not all patients respond, (ii) responses may diminish over time, and (iii) treatments often have undesirable side effects. Genetic studies have shown that the inheritance of two co-segregating SNPs expressed in the innate immune receptor, TLR4, is associated with human IBD. Mice expressing homologous SNPs ("TLR4-SNP" mice) exhibited more severe colitis than WT mice in a DSS-induced colonic inflammation/repair model. We identified a critical role for M2a "tissue repair" Mφ in the resolution of colitis. Our findings provide insight into potential development of novel therapies targeting Mφ signaling pathways that aim to alleviate the debilitating symptoms experienced by individuals with IBD.
Collapse
Affiliation(s)
- Alexandra M. Vlk
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Daniel Prantner
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Kari Ann Shirey
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Darren J. Perkins
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA
- University of Maryland Marlene & Stewart Greenebaum Comprehensive Cancer Center, Baltimore, Maryland, USA
| | - Marguerite S. Buzza
- Department of Physiology, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Vivek Thumbigere-Math
- Division of Periodontics, University of Maryland School of Dentistry, Baltimore, Maryland, USA
| | - Achsah D. Keegan
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Stefanie N. Vogel
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, Maryland, USA
- University of Maryland Marlene & Stewart Greenebaum Comprehensive Cancer Center, Baltimore, Maryland, USA
| |
Collapse
|
8
|
Rodríguez-García R, Vazquez-Villamar M, Aparicio-Ozores G, Parra-Rojas I, Radilla-Vázquez RB, Castro-Alarcón N. TLR4 polymorphism and haplotype are associated with obesity and lipid profile in young population: a pilot study. J Endocrinol Invest 2023; 46:903-913. [PMID: 36454439 DOI: 10.1007/s40618-022-01950-z] [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: 08/10/2022] [Accepted: 10/22/2022] [Indexed: 12/03/2022]
Abstract
BACKGROUND The single nucleotide polymorphisms in the TLR4 gene can decrease or increase the response to lipopolysaccharide, increasing the susceptibility to inflammatory diseases, affecting the expression or receptor function by inducing a low-grade chronic inflammatory response. PURPOSE The objective of this study was to evaluate the association of SNPs - 2570 A > G (rs2737190), - 2081 G > A (rs10983755), 896 A > G (rs 4986790), and 1196 C > T (rs4986791) of the TLR4 gene with obesity and metabolic alterations in the young population. RESULTS In this study, it was found that the carriers of the heterozygous genotype of the SNPs - 2081 G > A, 896 A > G, and 1196 C > T confer a higher risk of developing obesity (OR = 3.73, p = 0.018; OR = 5.66, p = 0.014, and OR = 8.95, p = 0.014, respectively). Also, with the lipid profile, the SNP - 2081 G > A was associated with total cholesterol (TC) ≥ 200 mg/dL (OR = 3.91, p = 0.020) and Kannel index > 3% (OR = 4.00, p = 0.008). The SNP 896 A > G was associated with LDL-c ≥ 100 mg/dL (OR = 3.64, p = 0.040) and Kannel index > 3% (OR = 4.33, p = 0.016), and the SNP 1196 C > T was associated with TC ≥ 200 mg/dL (OR = 4.37, p = 0.048), Castelli index > 4.5/> 5% (OR = 5.33, p = 0.016), and Kannel index > 3% (OR = 16.00, p = 0.001). Finally, the AGGT haplotype was associated with Castelli index > 4.5/> 5% (OR = 5.40, p = 0.015) and Kannel index > 3% (OR = 10.46, p < 0.001), and the AAAC haplotype was associated with obesity (OR = 3.56, p = 0.020), TC ≥ 200 mg/dL (OR = 4.04, p = 0.007), LDL-c ≥ 100 mg/dL (OR = 2.98, p = 0.030) and Kannel index > 3% (OR = 4.20, p = 0.002). CONCLUSION The heterozygous genotype of the SNPs - 2081 G > A, 896 A > G and 1196 C > T of the TLR4 gene was associated with altered lipid profile and development of obesity in young university students of Guerrero State, Mexico.
Collapse
Affiliation(s)
- R Rodríguez-García
- Laboratorio de Clínico, Instituto Mexicano del Seguro Social, Hospital General Regional, #1. Av. Plan de Ayala S/N, C.P. 62450, Cuernavaca Morelos, Mexico
| | - M Vazquez-Villamar
- Laboratorio de Investigación en Microbiología. Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Guerrero, México. Av. Lázaro Cárdenas S/N, Ciudad Universitaria Sur Col. Haciendita, C. P. 39090, Chilpancingo, Guerrero, México
| | - G Aparicio-Ozores
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional. Avenida Plan de Ayala S/N, Col., C. P. 39610, Ciudad de México, México
| | - I Parra-Rojas
- Laboratorio de Investigación en Obesidad y Diabetes. Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Guerrero, Chilpancingo, Guerrero, México
| | - R B Radilla-Vázquez
- Programa de la Doctorado en Ciencias Biomédicas. Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Guerrero, México. Av. Lázaro Cárdenas S/N, Ciudad Universitaria, C. P. 39090, Chilpancingo, Guerrero, México
| | - N Castro-Alarcón
- Laboratorio de Investigación en Microbiología. Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Guerrero, México. Av. Lázaro Cárdenas S/N, Ciudad Universitaria Sur Col. Haciendita, C. P. 39090, Chilpancingo, Guerrero, México.
| |
Collapse
|
9
|
Stefik D, Vranic V, Ivkovic N, Velikic G, Maric DM, Abazovic D, Vojvodic D, Maric DL, Supic G. Potential Impact of Polymorphisms in Toll-like Receptors 2, 3, 4, 7, 9, miR-146a, miR-155, and miR-196a Genes on Osteoarthritis Susceptibility. BIOLOGY 2023; 12:biology12030458. [PMID: 36979150 PMCID: PMC10045117 DOI: 10.3390/biology12030458] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/06/2023] [Accepted: 03/07/2023] [Indexed: 03/18/2023]
Abstract
Osteoarthritis (OA) is a progressive inflammatory disease of synovial joints and a leading cause of disability among adults. Inflammation-related genes, including genes for Toll-like receptors (TLRs), are tightly controlled by several microRNAs that, in addition to their pivotal role in the epigenetic regulation of target genes, are ligands for TLR activation and downstream signaling. Thus, we evaluated the association between OA risk and genetic variants in TLR2, TLR3, TLR4, TLR7, TLR9, and microRNAs that regulate TLRs signaling miR146a, miR155, and miR196a2. Our study group consisted of 95 surgically treated OA patients and a control group of 104 healthy individuals. Genetic polymorphisms were determined using TaqMan real-time PCR assays (Applied Biosystems). Adjusted logistic regression analysis demonstrated that polymorphisms in TLR4 rs4986790 (OR = 2.964, p = 0.006), TLR4 rs4986791 (OR = 8.766, p = 0.00001), and TLR7 rs385389 (OR = 1.579, p = 0.012) increased OA risk, while miR-196a2 rs11614913 (OR = 0.619, p = 0.034) was significantly associated with decreased OA risk. Our findings indicate that polymorphisms in the TLR4 and TLR7 genes might increase OA risk and suggest a novel association of miR-196a2 polymorphism with decreased OA susceptibility. The modulation of TLRs and miRNAs and their cross-talk might be an attractive target for a personalized approach to OA management.
Collapse
Affiliation(s)
- Debora Stefik
- Institute for Medical Research, Military Medical Academy, Crnotravska 17, 11000 Belgrade, Serbia
| | - Vladimir Vranic
- Clinic for Orthopedic Surgery and Traumatology, Military Medical Academy, Crnotravska 17, 11000 Belgrade, Serbia
- Medical Faculty of Military Medical Academy, University of Defense, Crnotravska 17, 11000 Belgrade, Serbia
| | - Nemanja Ivkovic
- Institute for Medical Research, Military Medical Academy, Crnotravska 17, 11000 Belgrade, Serbia
| | - Gordana Velikic
- Department for Research and Development, Clinic Orto MD-Parks Dr Dragi Hospital, 21000 Novi Sad, Serbia
| | - Dusan M. Maric
- Department for Research and Development, Clinic Orto MD-Parks Dr Dragi Hospital, 21000 Novi Sad, Serbia
| | - Dzihan Abazovic
- Biocell Hospital, Omladinskih Brigada 86a, 11000 Belgrade, Serbia
| | - Danilo Vojvodic
- Institute for Medical Research, Military Medical Academy, Crnotravska 17, 11000 Belgrade, Serbia
- Medical Faculty of Military Medical Academy, University of Defense, Crnotravska 17, 11000 Belgrade, Serbia
| | - Dusica L. Maric
- Department of Anatomy, Faculty of Medicine, University of Novi Sad, 21000 Novi Sad, Serbia
| | - Gordana Supic
- Institute for Medical Research, Military Medical Academy, Crnotravska 17, 11000 Belgrade, Serbia
- Medical Faculty of Military Medical Academy, University of Defense, Crnotravska 17, 11000 Belgrade, Serbia
- Correspondence:
| |
Collapse
|
10
|
The role of Toll-like receptor 4 gene polymorphism in the development of organ dysfunction in patients with severe pneumonia associated with A/H1N1 influenza. ACTA BIOMEDICA SCIENTIFICA 2023. [DOI: 10.29413/abs.2023-8.1.9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023] Open
Abstract
The aim of the study. To identify the frequency of occurrence of TLR4 Asp299Gly (rs4986790) gene polymorphism and to establish its contribution to the development of organ dysfunction in patients with severe pneumonia associated with A/H1N1 influenza.Materials and methods. The study included 55 patients with severe pneumonia associated with A/H1N1 influenza. Inclusion criteria: severe pneumonia; consolidation/ground-glass syndrome according to chest X-ray/CT. Exclusion criteria: unstable hemodynamics; body mass index > 30; diabetes mellitus; HIV; tuberculosis, oncopathology. Verification of the pathogen in the respiratory swab was carried out using PCR method: A/H1N1 influenza virus RNA was identified. The age of the patients was 47 [38; 62] years. Among all the patients the proportion of men was 47.8 %, of women – 52.2 %. Patients were divided into 2 groups: group 1 included patients with SOFA scale (Sequential Organ Failure Assessment) score ≥ 2 points; group 2 – patients with SOFA scale score ˂ 2 points. Gene SNPs were determined by PCR method using standard kits developed by Research and Production Company “Litekh” (Moscow). Amplification of the TLR4 gene fragments was carried out in a thermocycler Bis-M111 (Bis-N LLC, Novosibirsk). Genomic DNA isolated from whole blood leukocytes using the “DNA Express Blood” reagent was analyzed followed by an amplification reaction. The amplification product was detected in a 3% agarose gel.Results. Multiple organ dysfunction (SOFA scale score ≥ 2 points) in patients with severe pneumonia associated with A/H1N1 influenza was registered in 24 (43.6 %) cases. When analyzing the frequency of occurrence of the minor Gly allele, according to genetic models, the differences were established between patients of the groups 1 and 2 in codominant (p = 0.023; odds ratio (OR) – 8.82 (0.95–81.89)) and dominant (p = 0.005; OR = 12.35 (1.40–109.07)) models.Conclusion. Severe pneumonia associated with A/H1N1 influenza is accompanied by a high incidence of organ dysfunction. The risk of organ failure development is 2.1 times increased in patients with severe pneumonia with identified TLR4 Asp299Gly gene polymorphism, which probably requires further study.
Collapse
|
11
|
Tang N, Tian W, Ma GY, Xiao X, Zhou L, Li ZZ, Liu XX, Li CY, Wu KH, Liu W, Wang XY, Gao YY, Yang X, Qi J, Li D, Liu Y, Chen WS, Gao J, Li XQ, Cao W. TRPC channels blockade abolishes endotoxemic cardiac dysfunction by hampering intracellular inflammation and Ca 2+ leakage. Nat Commun 2022; 13:7455. [PMID: 36460692 PMCID: PMC9718841 DOI: 10.1038/s41467-022-35242-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 11/23/2022] [Indexed: 12/04/2022] Open
Abstract
Intracellular Ca2+ dysregulation is a key marker in septic cardiac dysfunction; however, regulation of the classic Ca2+ regulatory modules cannot successfully abolish this symptom. Here we show that the knockout of transient receptor potential canonical (TRPC) channel isoforms TRPC1 and TRPC6 can ameliorate LPS-challenged heart failure and prolong survival in mice. The LPS-triggered Ca2+ release from the endoplasmic reticulum both in cardiomyocytes and macrophages is significantly inhibited by Trpc1 or Trpc6 knockout. Meanwhile, TRPC's molecular partner - calmodulin - is uncoupled during Trpc1 or Trpc6 deficiency and binds to TLR4's Pococurante site and atypical isoleucine-glutamine-like motif to block the inflammation cascade. Blocking the C-terminal CaM/IP3R binding domain in TRPC with chemical inhibitor could obstruct the Ca2+ leak and TLR4-mediated inflammation burst, demonstrating a cardioprotective effect in endotoxemia and polymicrobial sepsis. Our findings provide insight into the pathogenesis of endotoxemic cardiac dysfunction and suggest a novel approach for its treatment.
Collapse
Affiliation(s)
- Na Tang
- grid.144022.10000 0004 1760 4150Department of Pharmacy, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi China ,grid.144022.10000 0004 1760 4150Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi China
| | - Wen Tian
- grid.233520.50000 0004 1761 4404Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, Shaanxi China ,grid.233520.50000 0004 1761 4404Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of the State Administration of Traditional Chinese Medicine, Fourth Military Medical University, Xi’an, Shaanxi China
| | - Guang-Yuan Ma
- grid.144022.10000 0004 1760 4150Department of Pharmacy, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi China ,grid.144022.10000 0004 1760 4150Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi China
| | - Xiong Xiao
- grid.233520.50000 0004 1761 4404Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, Shaanxi China ,grid.233520.50000 0004 1761 4404Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of the State Administration of Traditional Chinese Medicine, Fourth Military Medical University, Xi’an, Shaanxi China
| | - Lei Zhou
- grid.144022.10000 0004 1760 4150Department of Pharmacy, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi China ,grid.144022.10000 0004 1760 4150Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi China
| | - Ze-Zhi Li
- grid.144022.10000 0004 1760 4150Department of Pharmacy, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi China ,grid.144022.10000 0004 1760 4150Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi China
| | - Xiao-Xiao Liu
- grid.233520.50000 0004 1761 4404Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, Shaanxi China ,grid.233520.50000 0004 1761 4404Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of the State Administration of Traditional Chinese Medicine, Fourth Military Medical University, Xi’an, Shaanxi China
| | - Chong-Yao Li
- grid.412262.10000 0004 1761 5538Department of Pharmacy, Xi’an No.3 Hospital, the Affiliated Hospital of Northwest University, Xi’an, Shaanxi China
| | - Ke-Han Wu
- grid.144022.10000 0004 1760 4150Department of Pharmacy, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi China ,grid.144022.10000 0004 1760 4150Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi China
| | - Wenjuan Liu
- grid.144022.10000 0004 1760 4150Department of Pharmacy, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi China
| | - Xue-Ying Wang
- grid.233520.50000 0004 1761 4404Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, Shaanxi China ,grid.233520.50000 0004 1761 4404Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of the State Administration of Traditional Chinese Medicine, Fourth Military Medical University, Xi’an, Shaanxi China
| | - Yuan-Yuan Gao
- grid.233520.50000 0004 1761 4404Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, Shaanxi China ,grid.233520.50000 0004 1761 4404Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of the State Administration of Traditional Chinese Medicine, Fourth Military Medical University, Xi’an, Shaanxi China
| | - Xin Yang
- grid.144022.10000 0004 1760 4150Department of Pharmacy, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi China ,grid.144022.10000 0004 1760 4150Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi China
| | - Jianzhao Qi
- grid.144022.10000 0004 1760 4150Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi China
| | - Ding Li
- grid.144022.10000 0004 1760 4150Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi China
| | - Yang Liu
- grid.233520.50000 0004 1761 4404Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi China
| | - Wen-Sheng Chen
- grid.233520.50000 0004 1761 4404Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, Xi’an, Shaanxi China ,Department of Cardiovascular Surgery, Xi’an Gaoxin Hospital, Xi’an, Shaanxi China
| | - Jinming Gao
- grid.144022.10000 0004 1760 4150Department of Pharmacy, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi China ,grid.144022.10000 0004 1760 4150Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi China
| | - Xiao-Qiang Li
- grid.233520.50000 0004 1761 4404Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, Shaanxi China ,grid.233520.50000 0004 1761 4404Key Laboratory of Gastrointestinal Pharmacology of Chinese Materia Medica of the State Administration of Traditional Chinese Medicine, Fourth Military Medical University, Xi’an, Shaanxi China
| | - Wei Cao
- grid.144022.10000 0004 1760 4150Department of Pharmacy, School of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi China ,grid.144022.10000 0004 1760 4150Shaanxi Key Laboratory of Natural Products & Chemical Biology, Northwest A&F University, Yangling, Shaanxi China
| |
Collapse
|
12
|
Silva MJA, Santana DS, de Oliveira LG, Monteiro EOL, Lima LNGC. The relationship between 896A/G (rs4986790) polymorphism of TLR4 and infectious diseases: A meta-analysis. Front Genet 2022; 13:1045725. [PMID: 36506333 PMCID: PMC9729345 DOI: 10.3389/fgene.2022.1045725] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 11/10/2022] [Indexed: 11/25/2022] Open
Abstract
Toll-like Receptors (TLRs), such as the TLR4, are genes encoding transmembrane receptors of the same name, which induce a pro- or anti-inflammatory response according to their expression as the host's first line of defense against pathogens, such as infectious ones. Single nucleotide polymorphisms (SNPs) are the most common type of mutation in the human genome and can generate functional modification in genes. The aim of this article is to review in which infectious diseases there is an association of susceptibility or protection by the TLR4 SNP rs4986790. A systematic review and meta-analysis of the literature was conducted in the Science Direct, PUBMED, MEDLINE, and SciELO databases between 2011 and 2021 based on the dominant genotypic model of this SNP for general and subgroup analysis of infectious agent type in random effect. Summary odds ratios (ORs) and corresponding 95% confidence intervals (CIs) were calculated for genotypic comparison. I2 statistics were calculated to assess the presence of heterogeneity between studies and funnel plots were inspected for indication of publication bias. A total of 27 articles were included, all in English. Among the results achieved, the categories of diseases that were most associated with the SNP studied were in decreasing order of number of articles: infections by bacteria (29.63%); caused by viruses (22.23%); urinary tract infection-UTI (7.4%), while 11 studies (40.74%) demonstrated a nonsignificant association. In this meta-analysis, a total of 5599 cases and 5871 controls were finalized. The present meta-analysis suggests that there is no significant association between TLR4-rs4986790 SNP and infections (OR = 1,11; 95% CI: 0,75-1,66; p = 0,59), but in the virus subgroup it was associated with a higher risk (OR = 2,16; 95% CI: 1,09-4,30; p = 0,03). The subgroups of bacteria and parasites did not show statistical significance (OR = 0,86; 95% CI: 0,56-1,30; p = 0,47, and no estimate of effects, respectively). Therefore, it has been shown that a diversity of infectious diseases is related to this polymorphism, either by susceptibility or even severity to them, and the receptor generated is also crucial for the generation of cell signaling pathways and immune response against pathogens.
Collapse
Affiliation(s)
| | - Davi Silva Santana
- Institute of Health Sciences (ICS), Federal University of Pará (UFPA), Belém, Brazil
| | | | | | | |
Collapse
|
13
|
Polymorphisms in toll-like receptor 3 and 4 genes as prognostic and outcome biomarkers in melanoma patients. Melanoma Res 2022; 32:309-317. [PMID: 35855659 DOI: 10.1097/cmr.0000000000000836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Melanoma is one of the most aggressive tumors, and in the setting of rising incidence and mortality, there is an urgent need to identify new prognostic markers. Toll-like receptors (TLRs), are aberrantly expressed in numerous cancers, including melanoma. TLR signaling provides a microenvironment that is involved in antitumor immune response, chronic inflammation, cancer cell proliferation and evasion of immune destruction. In the present study, we investigated whether single nucleotide polymorphisms (SNPs) in TLR3 and TLR4 genes are associated with clinicopathologic features, progression and survival of melanoma patients. The study was conducted on 120 melanoma patients. DNA extracted from peripheral blood was genotyped for TLR3 polymorphisms rs5743312 and rs3775291 (L412F) and TLR4 polymorphisms rs4986790 (D299G) and rs4986791 (T399I), by TaqMan Real-Time PCR Assays. Kaplan-Meier survival curves were compared by the log-rank test. TLR3 polymorphism L412F was associated with a higher mitotic index (P = 0.035). TLR4 D299G and T399I polymorphisms were associated with indicators of melanoma severity, nodal metastases (P = 0.005 and P = 0.007, respectively) and advanced stage III (P = 0.005 and P = 0.004, respectively). Cox regression analysis showed that the presence of tumor-infiltrating lymphocytes (TILs) predicted better overall survival (HR = 0.318; P = 0.004). TLR4 T399I polymorphism was significantly associated with worse survival, P = 0.025. The overall survival rates were significantly lower for patients carrying variant allele T of TLR4 T399I SNP (TC and TT genotypes combined) (P = 0.008, log-rank test), compared to wild-type genotype CC. Our findings indicate that TLR4 polymorphisms T399I (rs4986791) and D299G (rs4986790) could be potential prognostic and survival markers for melanoma patients.
Collapse
|
14
|
Xu Y, Xue W, Gao H, Cui J, Zhao L, You C. Association of toll-like receptors single nucleotide polymorphisms with HBV and HCV infection: research status. PeerJ 2022; 10:e13335. [PMID: 35462764 PMCID: PMC9029363 DOI: 10.7717/peerj.13335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 04/04/2022] [Indexed: 01/13/2023] Open
Abstract
Background Hepatitis B virus (HBV) and hepatitis C virus (HCV) infections have become increasingly severe worldwide and are a threat to public health. There have been a number of studies conducted recently on the relationship of single nucleotide polymorphisms (SNPs) to innate immune receptor genes such as toll-like receptors (TLRs). Some literature suggests that SNPs of TLRs are associated with HBV and HCV infection. We summarized the role of TLRs gene polymorphisms associated with HBV and HCV infections and explored their possible mechanisms of action. Methodology PubMed and Web of Science were used to perform the literature review. Related articles and references were identified and used to analyze the role of TLRs gene polymorphism in HBV and HCV infection. Results TLRs gene polymorphisms may have beneficial or detrimental effects in HBV and HCV infection, and some SNPs can affect disease progression or prognosis. They affect the disease state by altering gene expression or protein synthesis; however, the mechanism of action is not clearly understood. Conclusions Single nucleotide polymorphisms of TLRs play a role in HBV and HCV infection, but the mechanism of action still needs to be explored in future studies.
Collapse
Affiliation(s)
- Yaxin Xu
- Laboratory Medicine Center, Lanzhou University Second Hospital, Lanzhou City, Gansu Province, China
| | - Wentao Xue
- Laboratory Medicine Center, Lanzhou University Second Hospital, Lanzhou City, Gansu Province, China
| | - Hongwei Gao
- Laboratory Medicine Center, Lanzhou University Second Hospital, Lanzhou City, Gansu Province, China
| | - Jiabo Cui
- Laboratory Medicine Center, Lanzhou University Second Hospital, Lanzhou City, Gansu Province, China
| | - Lingzhi Zhao
- Laboratory Medicine Center, Lanzhou University Second Hospital, Lanzhou City, Gansu Province, China
| | - Chongge You
- Laboratory Medicine Center, Lanzhou University Second Hospital, Lanzhou City, Gansu Province, China
| |
Collapse
|
15
|
Sánchez G, Salazar-Alcalá E, Hernández F, Deglesne PA, Bello ZD, de Noya BA, Noya O, Fernández-Mestre M. Polymorphisms of the TLR4 gene: Risk factor for chronicity and severity in oral vectorial Chagas disease. Exp Parasitol 2022; 238:108243. [DOI: 10.1016/j.exppara.2022.108243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 11/22/2021] [Accepted: 03/02/2022] [Indexed: 11/30/2022]
|
16
|
Elloumi N, Tahri S, Fakhfakh R, Abida O, Mahfoudh N, Hachicha H, Marzouk S, Bahloul Z, Masmoudi H. Role of innate immune receptors TLR4 and TLR2 polymorphisms in systemic lupus erythematosus susceptibility. Ann Hum Genet 2022; 86:137-144. [PMID: 35128637 DOI: 10.1111/ahg.12458] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 12/29/2021] [Accepted: 01/04/2022] [Indexed: 01/22/2023]
Abstract
AIM Through their recognition of various bacterial cell wall components, TLR2 and TLR4 participate in the innate response and modulate the activation of adaptive immunity. Therefore, the genetic background of these receptors might play a crucial role in autoimmune diseases such as systemic lupus erythematosus (SLE). In this study, we investigated the possible association between polymorphisms within TLR2 and TLR4 genes with SLE susceptibility. MATERIAL AND METHODS A total of 100 SLE patients and 200 unrelated healthy controls of the Tunisian population were enrolled in the study.TLR4rs4986790, TLR4rs4986791, and TLR2rs5743708 genotyping were performed using a polymerase chain reaction-restriction fragment length polymorphism method. The number of guanine-thymine (GT) repeat microsatellite in the intron 2 of TLR2 gene was analyzed by sequencing. RESULTS We reported a lack of allelic and genotypic association between SNPs of TLR4 and TLR2 genes and SLE pathogenesis. No correlation was found with any SLE features. However, SLE susceptibility was associated with the GT repeat microsatellite polymorphism in the human TLR2 gene. Further subclassification of alleles into three subclasses revealed a significant association between the long-sized repeats ((GT) >23) and SLE. CONCLUSION Though the results showed the absence of genetic association of TLR4 and TLR2 SNPs with the risk of developing SLE, we have identified a protective association between the microsatellite polymorphism in intron 2 of the TLR2 gene and SLE. Functionally, these (GT)n repeats may confer modifying effects or susceptibility to certain inflammatory conditions.
Collapse
Affiliation(s)
- Nesrine Elloumi
- Research laboratory LR18/SP12 auto-immunity, cancer and immunogenetics, Immunology Department, Habib Bourguiba university Hospital, University of Sfax, Sfax, Tunisia
| | - Safa Tahri
- Research laboratory LR18/SP12 auto-immunity, cancer and immunogenetics, Immunology Department, Habib Bourguiba university Hospital, University of Sfax, Sfax, Tunisia
| | - Raouia Fakhfakh
- Research laboratory LR18/SP12 auto-immunity, cancer and immunogenetics, Immunology Department, Habib Bourguiba university Hospital, University of Sfax, Sfax, Tunisia
| | - Olfa Abida
- Research laboratory LR18/SP12 auto-immunity, cancer and immunogenetics, Immunology Department, Habib Bourguiba university Hospital, University of Sfax, Sfax, Tunisia
| | - Nadia Mahfoudh
- Immunology Department, Hedi Chaker University Hospital, University of Sfax, Sfax, Tunisia
| | - Hend Hachicha
- Research laboratory LR18/SP12 auto-immunity, cancer and immunogenetics, Immunology Department, Habib Bourguiba university Hospital, University of Sfax, Sfax, Tunisia
| | - Sameh Marzouk
- Internal Medicine Department, Hedi Chaker Hospital, University of Sfax, Sfax, Tunisia
| | - Zouhir Bahloul
- Internal Medicine Department, Hedi Chaker Hospital, University of Sfax, Sfax, Tunisia
| | - Hatem Masmoudi
- Research laboratory LR18/SP12 auto-immunity, cancer and immunogenetics, Immunology Department, Habib Bourguiba university Hospital, University of Sfax, Sfax, Tunisia
| |
Collapse
|
17
|
Chandra H, Sharma KK, Tuovinen OH, Sun X, Shukla P. Pathobionts: mechanisms of survival, expansion, and interaction with host with a focus on Clostridioides difficile. Gut Microbes 2022; 13:1979882. [PMID: 34724858 PMCID: PMC8565823 DOI: 10.1080/19490976.2021.1979882] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Pathobionts are opportunistic microbes that emerge as a result of perturbations in the healthy microbiome due to complex interactions of various genetic, exposomal, microbial, and host factors that lead to their selection and expansion. Their proliferations can aggravate inflammatory manifestations, trigger autoimmune diseases, and lead to severe life-threatening conditions. Current surge in microbiome research is unwinding these complex interplays between disease development and protection against pathobionts. This review summarizes the current knowledge of pathobiont emergence with a focus on Clostridioides difficile and the recent findings on the roles of immune cells such as iTreg cells, Th17 cells, innate lymphoid cells, and cytokines in protection against pathobionts. The review calls for adoption of innovative tools and cutting-edge technologies in clinical diagnostics and therapeutics to provide insights in identification and quantification of pathobionts.
Collapse
Affiliation(s)
- Harish Chandra
- Department of Environmental Microbiology, School of Earth and Environmental Sciences, Babasaheb Bhimrao Ambedkar University, Lucknow, Uttar Pradesh, India,Department of Molecular Genetics, Biochemistry and Microbiology, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Krishna Kant Sharma
- Laboratory of Enzymology and Recombinant DNA Technology, Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Olli H. Tuovinen
- Department of Microbiology, Ohio State University, Columbus, OH, USA
| | - Xingmin Sun
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA,Xingmin Sun Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL 33612, USA
| | - Pratyoosh Shukla
- School of Biotechnology, Institute of Science, Banaras Hindu University, Varanasi, India,Enzyme Technology and Protein Bioinformatics Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, India,CONTACT Pratyoosh Shukla School of Biotechnology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| |
Collapse
|
18
|
Richard K, Piepenbrink KH, Shirey KA, Gopalakrishnan A, Nallar S, Prantner DJ, Perkins DJ, Lai W, Vlk A, Toshchakov VY, Feng C, Fanaroff R, Medvedev AE, Blanco JCG, Vogel SN. A mouse model of human TLR4 D299G/T399I SNPs reveals mechanisms of altered LPS and pathogen responses. J Exp Med 2021; 218:211550. [PMID: 33216117 PMCID: PMC7685774 DOI: 10.1084/jem.20200675] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 09/01/2020] [Accepted: 10/09/2020] [Indexed: 12/12/2022] Open
Abstract
Two cosegregating single-nucleotide polymorphisms (SNPs) in human TLR4, an A896G transition at SNP rs4986790 (D299G) and a C1196T transition at SNP rs4986791 (T399I), have been associated with LPS hyporesponsiveness and differential susceptibility to many infectious or inflammatory diseases. However, many studies failed to confirm these associations, and transfection experiments resulted in conflicting conclusions about the impact of these SNPs on TLR4 signaling. Using advanced protein modeling from crystallographic data of human and murine TLR4, we identified homologous substitutions of these SNPs in murine Tlr4, engineered a knock-in strain expressing the D298G and N397I TLR4 SNPs homozygously, and characterized in vivo and in vitro responses to TLR4 ligands and infections in which TLR4 is implicated. Our data provide new insights into cellular and molecular mechanisms by which these SNPs decrease the TLR4 signaling efficiency and offer an experimental approach to confirm or refute human data possibly confounded by variables unrelated to the direct effects of the SNPs on TLR4 functionality.
Collapse
Affiliation(s)
- Katharina Richard
- Department of Microbiology and Immunology, University of Maryland, School of Medicine, Baltimore, MD
| | - Kurt H Piepenbrink
- Department of Food Science and Technology, Department of Biochemistry, University of Nebraska, Lincoln, NE
| | - Kari Ann Shirey
- Department of Microbiology and Immunology, University of Maryland, School of Medicine, Baltimore, MD
| | - Archana Gopalakrishnan
- Department of Microbiology and Immunology, University of Maryland, School of Medicine, Baltimore, MD
| | - Shreeram Nallar
- Department of Microbiology and Immunology, University of Maryland, School of Medicine, Baltimore, MD
| | - Daniel J Prantner
- Department of Microbiology and Immunology, University of Maryland, School of Medicine, Baltimore, MD
| | - Darren J Perkins
- Department of Microbiology and Immunology, University of Maryland, School of Medicine, Baltimore, MD
| | - Wendy Lai
- Department of Microbiology and Immunology, University of Maryland, School of Medicine, Baltimore, MD
| | - Alexandra Vlk
- Department of Microbiology and Immunology, University of Maryland, School of Medicine, Baltimore, MD
| | - Vladimir Y Toshchakov
- Department of Microbiology and Immunology, University of Maryland, School of Medicine, Baltimore, MD
| | - Chiguang Feng
- Center for Vaccine Development, University of Maryland, School of Medicine, Baltimore, MD
| | - Rachel Fanaroff
- Department of Anatomical Pathology, University of Maryland Medical Center, Baltimore, MD
| | - Andrei E Medvedev
- Department of Immunology, University of Connecticut Health Center, Farmington, CT
| | | | - Stefanie N Vogel
- Department of Microbiology and Immunology, University of Maryland, School of Medicine, Baltimore, MD
| |
Collapse
|
19
|
Zheng K, He FB, Liu H, He Q. Genetic variations of toll-like receptors: Impact on susceptibility, severity and prognosis of bacterial meningitis. INFECTION GENETICS AND EVOLUTION 2021; 93:104984. [PMID: 34214672 DOI: 10.1016/j.meegid.2021.104984] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 06/24/2021] [Accepted: 06/27/2021] [Indexed: 01/24/2023]
Abstract
Bacterial meningitis (BM) is a serious infectious disease of the central nervous system,which is mainly caused by Streptococcus pneumoniae, Neisseria meningitidis, Haemophilus influenzae, Group B Streptococcus and Listeria monocytogenes. Throughout the world, BM has become one of the most lethal diseases that commonly occurs in children. Toll like receptors (TLRs) are one of the most important immune defense lines in infectious diseases, and play an essential role in host defense. Accumulating evidence shows that genetic variations in TLRs are associated with host responses in BM. This review aims to summarize the role of different TLRs and their genetic variations in the susceptibility, severity and prognosis of BM and discuss the identified risk factors for better treatment and improvement of the course and outcome of BM.
Collapse
Affiliation(s)
- Kai Zheng
- Department of Medical Microbiology, Capital Medical University, Beijing 100069, China; Department of Neurorehabilitation, Wuxi Tongren Rehabilitation Hospital, Wuxi 214151, Jiangsu, China
| | - Felix B He
- Institute of Biomedicine, University of Turku, 20520 Turku, Finland
| | - Hongshan Liu
- Department of Medical Microbiology, Capital Medical University, Beijing 100069, China
| | - Qiushui He
- Department of Medical Microbiology, Capital Medical University, Beijing 100069, China; Institute of Biomedicine, University of Turku, 20520 Turku, Finland.
| |
Collapse
|
20
|
Kaixin Z, Xuedie G, Jing L, Yiming Z, Khoso PA, Zhaoyi L, Shu L. Selenium-deficient diet induces inflammatory response in the pig adrenal glands by activating TLR4/NF-κB pathway via miR-30d-R_1. Metallomics 2021; 13:6300451. [PMID: 34132350 DOI: 10.1093/mtomcs/mfab037] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 06/02/2021] [Accepted: 06/13/2021] [Indexed: 01/07/2023]
Abstract
Selenium (Se) is an important trace element to maintain the body's dynamic balance. Lack of Se can cause inflammation. Studies have shown that inflammation often leads to disorders of the hypothalamic-pituitary-adrenal axis, but the mechanism by which Se deficiency causes inflammation of the porcine adrenal glands is still unclear. In order to study the effect of Se deficiency on the adrenal glands of pigs, we obtained Se-deficient pig adrenal glands through a low-Se diet. The results of mass spectrometry showed that the Se content in the Se-deficient group was only one-tenth of the control group. We detected the expression of the toll-like receptor 4 (TLR4) and downstream factors by qRT-PCR and Western blotting, and found that the lack of Se affected the TLR4/NF-κB pathway. It is known that miR-155-3p, miR-30d-R_1, and miR-146b have all been verified for targeting relationship with TLR4. We confirmed by qRT-PCR that miR-30d-R_1 decreased most significantly in the Se-deficient pig model. Then we tested 25 selenoproteins and some indicators of oxidative stress. It is confirmed that Se deficiency reduces the antioxidant capacity and induces oxidative stress in pig adrenal tissue. In short, a diet lacking Se induces oxidative stress in pig adrenal tissues and leads to inflammation through the miR-30d-R_1/TLR4 pathway. This study provides a reference for the prevention of adrenal inflammation in pigs from a nutritional point of view.
Collapse
Affiliation(s)
- Zhang Kaixin
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
| | - Gu Xuedie
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
| | - Lan Jing
- Quality and Safety Institute of Agricultural Products, Heilongjiang Academy of Agricultural Sciences, Harbin, 150086, China
| | - Zhang Yiming
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
| | - Pervez Ahmed Khoso
- Shaheed Benazir Bhutto University of Veterinary and Animal Sciences Sakrand, Pakistan
| | - Liu Zhaoyi
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
| | - Li Shu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
| |
Collapse
|
21
|
Aranda-Uribe IS, López-Vázquez JC, Barbosa-Cobos RE, Ramírez-Bello J. TLR4 and TLR9 polymorphisms are not associated with either rheumatoid arthritis or systemic lupus erythematosus in Mexican patients. Mol Biol Rep 2021; 48:3561-3565. [PMID: 33939072 DOI: 10.1007/s11033-021-06371-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 04/23/2021] [Indexed: 12/07/2022]
Abstract
Toll-like receptor (TLR)-mediated signaling pathways induce a proinflammatory microenvironment to eradicate pathogens. However, in rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE), TLRs can promote chronic inflammation. It has been shown that some TLR4 and TLR9 single nucleotide polymorphisms (SNPs) are risk factors for RA and SLE, but these findings have not been replicated in all populations; thus, results are inconclusive. We evaluated the TLR4 Asp299Gly, Thr399Ile, - 1892G/A SNPs, and the TLR9 Pro545Pro SNP to assess potential associations with RA and SLE in Mexican patients. This study included 474 patients with RA, 283 patients with SLE, and 424 healthy controls. We used a 5' nuclease allelic discrimination assay to genotype individuals for the four TLR4 and TLR9 polymorphisms. We found that the genotype or allelic frequencies of the TLR4 Asp299Gly, Thr399Ile, - 1892G/A, and TLR9 Pro545Pro polymorphisms were similar between patients and controls. We found no association under different genetic models. A haplotype analysis of TLR4 showed no association with either RA or SLE. We found no significant differences in the allelic or genotypic frequencies of TLR4 Asp299Gly, Thr399IIe, - 1892G/A, or TLR9 Pro545Pro between patients and controls. These findings suggested that these variants are not risk factors for RA or SLE in Mexican patients.
Collapse
Affiliation(s)
- Ivan Sammir Aranda-Uribe
- Unidad de Investigación, Hospital Juárez de México, Av. Instituto, Politécnico Nacional No. 5160, DelegaciónGustavo A. Madero, C.P. 07760, Mexico City, Mexico
| | - Juan Carlos López-Vázquez
- Unidad de Investigación, Hospital Juárez de México, Av. Instituto, Politécnico Nacional No. 5160, DelegaciónGustavo A. Madero, C.P. 07760, Mexico City, Mexico
| | | | - Julian Ramírez-Bello
- Unidad de Investigación, Hospital Juárez de México, Av. Instituto, Politécnico Nacional No. 5160, DelegaciónGustavo A. Madero, C.P. 07760, Mexico City, Mexico.
| |
Collapse
|
22
|
Association of TLR4 gene polymorphisms with sepsis after a burn injury: findings of the functional role of rs2737190 SNP. Genes Immun 2021; 22:24-34. [PMID: 33531683 DOI: 10.1038/s41435-021-00121-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 11/11/2020] [Accepted: 01/13/2021] [Indexed: 02/01/2023]
Abstract
Sepsis is a life-threatening organ dysfunction condition caused by a dysregulated response to an infection that is common among patients with moderate to severe burn injury. Previously, genomic variants in Toll-like receptor 4 (TLR4), a key innate immunity receptor, have been associated with sepsis and infection susceptibility. In this study, the association of six TLR4 SNPs with sepsis after burn injury was tested in the Mexican mestizo population. We found that the rs2737190 polymorphism is associated with sepsis after burn trauma. Interestingly, the G allele and GG genotype were associated with a lower risk of developing sepsis. Since the rs2737190 SNP is in the promoter region of the TLR4 gene, we analyzed the possibility that this polymorphism regulates the TLR4 pathway. We cultured peripheral blood mononuclear cells from different genotype carriers and found, after stimulation with LPS, that carriers of the GG genotype showed a higher expression of TLR4, IL6, and TNFα than AA genotype carriers. The results suggest that the GG genotype produces an increase in the TLR4 expression, and therefore an improvement in the immune response. We conclude that the rs2737190 polymorphism may become a useful marker for genetic studies of sepsis in patients after a burn injury.
Collapse
|
23
|
Zhang Y, Liu J, Wang C, Liu J, Lu W. Toll-Like Receptors Gene Polymorphisms in Autoimmune Disease. Front Immunol 2021; 12:672346. [PMID: 33981318 PMCID: PMC8107678 DOI: 10.3389/fimmu.2021.672346] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 04/07/2021] [Indexed: 12/20/2022] Open
Abstract
Toll-like receptors (TLRs) are important initiators of the immune response, both innate and acquired. Evidence suggests that gene polymorphisms within TLRs cause malfunctions of certain key TLR-related signaling pathways, which subsequently increases the risk of autoimmune diseases. We illustrate and discuss the current findings on the role of Toll-like receptor gene polymorphisms in numerous autoimmune diseases in this review, such as type 1 diabetes mellitus, Graves’ disease, rheumatoid arthritis, systemic lupus erythematosus and multiple sclerosis. The study of genetic variation in TLRs in different populations has shown a complex interaction between immunity and environmental factors. This interaction suggests that TLR polymorphisms affect the susceptibility to autoimmune diseases differently in various populations. The identification of Toll-like receptor gene polymorphisms can expand our understanding of the pathogenesis of autoimmune diseases, which will subsequently guide effective medical management and provide insight into prognosis and advanced treatments.
Collapse
Affiliation(s)
- Yingchi Zhang
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Jia Liu
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Changlun Wang
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Junxian Liu
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Wei Lu
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, China
| |
Collapse
|
24
|
Chansard A, Dubrulle N, Poujol de Molliens M, Falanga PB, Stephen T, Hasan M, van Zandbergen G, Aulner N, Shorte SL, David-Watine B. Unveiling Interindividual Variability of Human Fibroblast Innate Immune Response Using Robust Cell-Based Protocols. Front Immunol 2021; 11:569331. [PMID: 33505391 PMCID: PMC7829859 DOI: 10.3389/fimmu.2020.569331] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 11/19/2020] [Indexed: 11/13/2022] Open
Abstract
The LabEx Milieu Interieur (MI) project is a clinical study centered on the detailed characterization of the baseline and induced immune responses in blood samples from 1,000 healthy donors. Analyses of these samples has lay ground for seminal studies on the genetic and environmental determinants of immunologic variance in a healthy cohort population. In the current study we developed in vitro methods enabling standardized quantification of MI-cohort-derived primary fibroblasts responses. Our results show that in vitro human donor cohort fibroblast responses to stimulation by different MAMPs analogs allows to characterize individual donor immune-phenotype variability. The results provide proof-of-concept foundation to a new experimental framework for such studies. A bio-bank of primary fibroblast lines was generated from 323 out of 1,000 healthy individuals selected from the MI-study cohort. To study inter-donor variability of innate immune response in primary human dermal fibroblasts we chose to measure the TLR3 and TLR4 response pathways, both receptors being expressed and previously studied in fibroblasts. We established high-throughput automation compatible methods for standardized primary fibroblast cell activation, using purified MAMPS analogs, poly I:C and LPS that stimulate TLR3 and TLR4 pathways respectively. These results were in turn compared with a stimulation method using infection by HSV-1 virus. Our "Add-only" protocol minimizes high-throughput automation system variability facilitating whole process automation from cell plating through stimulation to recovery of cell supernatants, and fluorescent labeling. Images were acquired automatically by high-throughput acquisition on an automated high-content imaging microscope. Under these methodological conditions standardized image acquisition provided for quantification of cellular responses allowing biological variability to be measured with low system noise and high biological signal fidelity. Optimal for automated analysis of immuno-phenotype of primary human cell responses our method and experimental framework as reported here is highly compatible to high-throughput screening protocols like those necessary for chemo-genomic screening. In context of primary fibroblasts derived from donors enrolled to the MI-clinical-study our results open the way to assert the utility of studying immune-phenotype characteristics relevant to a human clinical cohort.
Collapse
Affiliation(s)
- Audrey Chansard
- UTechS Photonic BioImaging, C2RT, Institut Pasteur, Paris, France
| | - Nelly Dubrulle
- UTechS Photonic BioImaging, C2RT, Institut Pasteur, Paris, France
| | | | - Pierre B Falanga
- UTechS Photonic BioImaging, C2RT, Institut Pasteur, Paris, France
| | - Tharshana Stephen
- UTechS Cytometry and Biomarkers, CRT, Institut Pasteur, Paris, France
| | - Milena Hasan
- UTechS Cytometry and Biomarkers, CRT, Institut Pasteur, Paris, France
| | - Ger van Zandbergen
- Division of Immunology, Paul-Ehrlich-Institut, Federal Institute for Vaccines and Biomedicines, Langen, Germany
| | - Nathalie Aulner
- UTechS Photonic BioImaging, C2RT, Institut Pasteur, Paris, France
| | - Spencer L Shorte
- UTechS Photonic BioImaging, C2RT, Institut Pasteur, Paris, France.,Pasteur Joint International Research Unit Ai3D, Institut Pasteur Korea, Seongnam-si, South Korea
| | - Brigitte David-Watine
- UTechS Photonic BioImaging, C2RT, Institut Pasteur, Paris, France.,Unité INSERM U 1223, Institut Pasteur, Paris, France.,Unité Biologie et Génétique de la Paroi Bactérienne, Institut Pasteur, Paris, France.,CNRS UMR2001, Paris, France.,INSERM, Équipe Avenir, Paris, France
| |
Collapse
|
25
|
Shaddox LM, Morford LA, Nibali L. Periodontal health and disease: The contribution of genetics. Periodontol 2000 2020; 85:161-181. [PMID: 33226705 DOI: 10.1111/prd.12357] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Periodontitis is an infectious, inflammatory disease that is associated with a complex interplay between specific bacteria, host response, and environmental factors. Because of its high degree of familial aggregation, specifically for the more aggressive forms of the disease, genetics factors have been implicated in disease pathogenesis for several decades. This review provides an overview of what we currently know regarding the genetic and epigenetic contributions to periodontal disease and discusses future opportunities in the field.
Collapse
Affiliation(s)
- Luciana Macchion Shaddox
- Division of Periodontology, Department of Oral Health Practice, University of Kentucky College of Dentistry, Lexington, Kentucky, USA
| | - Lorri Ann Morford
- Division of Orthodontics, Department of Oral Health Sciences, University of Kentucky College of Dentistry, Lexington, Kentucky, USA
| | - Luigi Nibali
- Faculty of Dentistry, Oral & Craniofacial Sciences, Kings College London, Guy's Hospital, London, UK
| |
Collapse
|
26
|
Figueroa-Hall LK, Paulus MP, Savitz J. Toll-Like Receptor Signaling in Depression. Psychoneuroendocrinology 2020; 121:104843. [PMID: 32911436 PMCID: PMC7883590 DOI: 10.1016/j.psyneuen.2020.104843] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 07/09/2020] [Accepted: 08/07/2020] [Indexed: 12/12/2022]
Abstract
Depression is one of the most prevalent, disabling, and costly mental illnesses currently affecting over 300 million people worldwide. A subset of depressed patients display inflammation as indicated by increased levels of proinflammatory mediators in the blood and cerebrospinal fluid. Longitudinal and experimental studies suggest that this inflammatory profile may causally contribute to the initiation, maintenance, or recurrence of depressive episodes in the context of major depressive disorder (MDD). While the mechanistic pathways that mediate these depressogenic effects have not yet been fully elucidated, toll-like receptor (TLR) signaling is one potential common inflammatory pathway. In this review, we focus on the role that inflammation plays in depression, TLR signaling and its plasticity as a candidate pathway, its regulation by micro ribonucleic acids (miRNAs), and their potential as diagnostic biomarkers for identification of inflammatory subtypes of depression. Pre-clinical and clinical studies have demonstrated that TLR expression and TLR signaling regulators are associated with MDD. Further, TLR expression and signaling is in-turn, regulated in part by miRNAs and some TLR-responsive miRNAs indirectly modulate pathways that are implicated in MDD pathophysiology. These data suggest an intersection between TLR signaling regulation and MDD-linked pathways. While these studies suggest that miRNAs play a role in the pathophysiology of MDD via their regulatory effects on TLR pathways, the utility of miRNAs as biomarkers and potential treatment targets remains to be determined. Developing new and innovative techniques or adapting established immunological approaches to mental health, should be at the forefront in moving the field forward, especially in terms of categorization of inflammatory subtypes in MDD.
Collapse
Affiliation(s)
| | - Martin P Paulus
- Laureate Institute for Brain Research, 6655 S. Yale Ave, Tulsa, OK, 74136, United States; Oxley College of Health Sciences, 1215 S. Boulder Ave W., The University of Tulsa, Tulsa, OK, 74199, United States.
| | - Jonathan Savitz
- Laureate Institute for Brain Research, 6655 S. Yale Ave, Tulsa, OK, 74136, United States; Oxley College of Health Sciences, 1215 S. Boulder Ave W., The University of Tulsa, Tulsa, OK, 74199, United States.
| |
Collapse
|
27
|
TLR4 896A/G and TLR9 1174G/A polymorphisms are associated with the risk of infectious mononucleosis. Sci Rep 2020; 10:13154. [PMID: 32753695 PMCID: PMC7403730 DOI: 10.1038/s41598-020-70129-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 07/21/2020] [Indexed: 02/06/2023] Open
Abstract
Toll-like receptors (TLRs) recognize pathogen-associated molecular patterns and activate innate and adaptive immune responses. Single nucleotide polymorphisms (SNPs) within the TLR genes may influence host–pathogen interactions and can have an impact on the progression of infectious diseases. The present study aimed to investigate the genotype distribution of TLR2 (2029C/T, rs121917864; 2258G/A, rs5743708), TLR4 (896A/G, rs4986790), and TLR9 (− 1237T/C, rs5743836; − 1486T/C, rs187084; 1174G/A, rs352139; and 2848C/T, rs352140) polymorphisms in 149 children and adolescents with infectious mononucleosis (IM) and 140 healthy individuals. The potential association of TLR SNPs with the clinical manifestations of EBV infection was also studied. The presence of TLR2, TLR4, and TLR9 SNPs was identified by polymerase chain reaction–restriction fragment length polymorphism (PCR–RFLP). EBV DNA loads were detected by quantitative real-time PCR assay. The TLR4 896 GG and the TLR9 1174 GA genotypes were associated with an increased risk of EBV-related IM in examined patients (p = 0.014 and p = 0.001, respectively). The heterozygous genotype of the TLR4 896A/G SNP was associated with an increased risk of elevated liver enzyme levels and leukocytosis (p < 0.05). Our preliminary study revealed that the TLR4 896A/G and the TLR9 1174G/A polymorphisms seem to be related to the course of acute EBV infection in children and adolescents.
Collapse
|
28
|
Yang Y, Hu Y, Zhou Y, Liang T, Tang H, Ju H, Shi Q, Fang H. Lys694Arg polymorphism leads to blunted responses to LPS by interfering TLR4 with recruitment of MyD88. Innate Immun 2020; 27:483-492. [PMID: 32513051 PMCID: PMC8504268 DOI: 10.1177/1753425920927479] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
TLR4 polymorphisms such as Asp299Gly and Thr399Ile related to Gram-negative sepsis have been reported to result in significantly blunted responsiveness to LPS. Our study group previously screened other TLR4 polymorphic variants by checking the NF-κB activation in comparison to wild type (WT) TLR4 in human embryonic kidney 293T cells. In this study, we found that the Lys694Arg (K694R) polymorphism reduced the activation of NF-κB, and the production of downstream inflammatory factors IL-1, TNF-α and IL-6, representing the K694R polymorphism, led to blunted responsiveness to LPS. Then, we examined the influence of the K694R polymorphism on total and cell-surface TLR4 expression by Western blotting and flow cytometry, respectively, but observed no differences between the K694R polymorphism and WT TLR4. We also used co-immunoprecipitation to determine the interaction of the K694R polymorphism and WT TLR4 with their co-receptor myeloid differentiation factor 2 (MD2) and their downstream signal adaptor MyD88. We found that K694R reduced the recruitment of MyD88 in TLR4 signalling but had no impact on the interaction with MD2.
Collapse
Affiliation(s)
- Yajie Yang
- Department of Anaesthesiology, Jinshan Hospital, Fudan University, PR China
| | - Yan Hu
- Department of Anaesthesiology, Zhongshan Hospital, Fudan University, PR China
| | - Yile Zhou
- Department of Anaesthesiology, Jinshan Hospital, Fudan University, PR China
| | - Tao Liang
- Department of Anaesthesiology, Jinshan Hospital, Fudan University, PR China
| | - Haihong Tang
- Department of Anaesthesiology, Jinshan Hospital, Fudan University, PR China
| | - Huihui Ju
- Department of Anaesthesiology, Zhongshan Hospital, Fudan University, PR China
| | - Qiqing Shi
- Department of Anaesthesiology, Minhang Branch, Zhongshan Hospital, Fudan University, PR China
| | - Hao Fang
- Department of Anaesthesiology, Zhongshan Hospital, Fudan University, PR China.,Department of Anaesthesiology, Minhang Branch, Zhongshan Hospital, Fudan University, PR China
| |
Collapse
|
29
|
Marchionni E, Porpora MG, Megiorni F, Piacenti I, Giovannetti A, Marchese C, Benedetti Panici P, Pizzuti A. TLR4 T399I Polymorphism and Endometriosis in a Cohort of Italian Women. Diagnostics (Basel) 2020; 10:diagnostics10050255. [PMID: 32349318 PMCID: PMC7277393 DOI: 10.3390/diagnostics10050255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/20/2020] [Accepted: 04/24/2020] [Indexed: 12/12/2022] Open
Abstract
Background: Endometriosis is a widespread multifactorial disease in which environmental, genetic, and epigenetic factors contribute to the phenotype. Single Nucleotide Polymorphisms (SNPs) in genes implicated in pivotal molecular mechanisms have been investigated as susceptible risk factors in distinct populations. Among these, Toll-like receptor 4 (TLR4) represents a good candidate due to its role in the immune/inflammatory response and endometriosis pathogenesis. Methods: The TRL4 gene T399I SNP (C/T transition, rs4986791) was investigated in 236 Italian endometriosis patients and 150 controls by using the PCR-RFLP method. One-tailed Fisher’s exact test was used to compare differences between categorical variables. T399I genotype distribution was evaluated for Hardy–Weinberg equilibrium in both groups using the Chi-squared test for given probabilities. Results: Fisher’s exact test comparing C and T allele frequencies showed a difference in the frequency of T alleles between patients and controls (OR = 1.96, 95% confidence interval 0.91–4.23; p-value = 0.0552). Genotype frequencies did not show any significant difference between patients and controls. The homozygous TT genotype was observed in 2% of endometriosis women and not in controls. Conclusions: Our results show that the TLR4 rs4986791 T variant may be considered a genetic risk factor for endometriosis in Italian women. More extensive studies in other populations are needed to confirm this result.
Collapse
Affiliation(s)
- Enrica Marchionni
- Department of Experimental Medicine, Sapienza University of Rome, Policlinico Umberto I Hospital, 00161 Rome, Italy
- Correspondence: ; Tel.: +39-0649974080
| | - Maria Grazia Porpora
- Department of Maternal and Child Health and Urology, Sapienza University of Rome, Policlinico Umberto I Hospital, 00161 Rome, Italy
| | - Francesca Megiorni
- Department of Experimental Medicine, Sapienza University of Rome, Policlinico Umberto I Hospital, 00161 Rome, Italy
| | - Ilaria Piacenti
- Department of Maternal and Child Health and Urology, Sapienza University of Rome, Policlinico Umberto I Hospital, 00161 Rome, Italy
| | - Agnese Giovannetti
- Laboratory of Clinical Genomics, Fondazione IRCCS Casa Sollievo della Sofferenza, 71013 San Giovanni Rotondo, Italy
| | - Cinzia Marchese
- Department of Experimental Medicine, Sapienza University of Rome, Policlinico Umberto I Hospital, 00161 Rome, Italy
| | - Pierluigi Benedetti Panici
- Department of Maternal and Child Health and Urology, Sapienza University of Rome, Policlinico Umberto I Hospital, 00161 Rome, Italy
| | - Antonio Pizzuti
- Department of Experimental Medicine, Sapienza University of Rome, Policlinico Umberto I Hospital, 00161 Rome, Italy
| |
Collapse
|
30
|
Yang J, Wise L, Fukuchi KI. TLR4 Cross-Talk With NLRP3 Inflammasome and Complement Signaling Pathways in Alzheimer's Disease. Front Immunol 2020; 11:724. [PMID: 32391019 PMCID: PMC7190872 DOI: 10.3389/fimmu.2020.00724] [Citation(s) in RCA: 178] [Impact Index Per Article: 44.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 03/30/2020] [Indexed: 01/02/2023] Open
Abstract
Amyloid plaques, mainly composed of abnormally aggregated amyloid β-protein (Aβ) in the brain parenchyma, and neurofibrillary tangles (NFTs), consisting of hyperphosphorylated tau protein aggregates in neurons, are two pathological hallmarks of Alzheimer's disease (AD). Aβ fibrils and tau aggregates in the brain are closely associated with neuroinflammation and synapse loss, characterized by activated microglia and dystrophic neurites. Genome-wide genetic association studies revealed important roles of innate immune cells in the pathogenesis of late-onset AD by recognizing a dozen genetic risk loci that modulate innate immune activities. Furthermore, microglia, brain resident innate immune cells, have been increasingly recognized to play key, opposing roles in AD pathogenesis by either eliminating toxic Aβ aggregates and enhancing neuronal plasticity or producing proinflammatory cytokines, reactive oxygen species, and synaptotoxicity. Aggregated Aβ binds to toll-like receptor 4 (TLR4) and activates microglia, resulting in increased phagocytosis and cytokine production. Complement components are associated with amyloid plaques and NFTs. Aggregated Aβ can activate complement, leading to synapse pruning and loss by microglial phagocytosis. Systemic inflammation can activate microglial TLR4, NLRP3 inflammasome, and complement in the brain, leading to neuroinflammation, Aβ accumulation, synapse loss and neurodegeneration. The host immune response has been shown to function through complex crosstalk between the TLR, complement and inflammasome signaling pathways. Accordingly, targeting the molecular mechanisms underlying the TLR-complement-NLRP3 inflammasome signaling pathways can be a preventive and therapeutic approach for AD.
Collapse
Affiliation(s)
- Junling Yang
- Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine at Peoria, Peoria, IL, United States
| | - Leslie Wise
- Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine at Peoria, Peoria, IL, United States
| | - Ken-Ichiro Fukuchi
- Department of Cancer Biology and Pharmacology, University of Illinois College of Medicine at Peoria, Peoria, IL, United States
| |
Collapse
|
31
|
Tarragô AM, da Silva Neto PV, Ramasawmy R, Pereira GL, Toro DM, de Amorim Xabregas L, Costa AG, Victória MB, da Silva Victória F, Malheiro A. Combination of genetic polymorphisms in TLR influence cytokine profile in HCV patients treated with DAAs in the State of Amazonas. Cytokine 2020; 130:155052. [PMID: 32179425 DOI: 10.1016/j.cyto.2020.155052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 11/26/2019] [Accepted: 02/24/2020] [Indexed: 02/08/2023]
Abstract
Hepatitis C is a public health problem and affects approximately 3% of the world's population. HCV infections have a wide spectrum of clinical manifestations, and several single nucleotide polymorphisms (SNPs) in the genes of the toll-like receptors are cited to influence the clinical outcomes. A cross-sectional study was conducted in the Amazonas State, Brazil in which SNPs in TLR4 and TLR9 genes were genotyped by PCR-RFLP in 151 HCV chronic liver disease patients and 206 healthy donors. The circulating cytokines IL-6, TNF, IL-10, IL-2, IFN-γ, IL-4 and IL-17A were measured by cytometric bead array (CBA) which revealed that the combined genotypes of TLR9 -1237T/T and -1486C/T seem to influence the cytokine profile under lipopolysaccharide (LPS) stimulation of the Th17 profile, especially among patients with advanced chronic liver disease when treated with DAAs.
Collapse
Affiliation(s)
- Andréa Monteiro Tarragô
- Programa de Pós-Graduação em Imunologia Básica e Aplicada, Universidade Federal do Amazonas (UFAM), Manaus, Amazonas, Brazil; Laboratório de Genômica, Fundação Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, Amazonas, Brazil; Programa de Pós-Graduação em Ciências Aplicadas à Hematologia, Universidade do Estado do Amazonas (UEA), Manaus, Amazonas, Brazil.
| | - Pedro Vieira da Silva Neto
- Programa de Pós-Graduação em Imunologia Básica e Aplicada, Universidade Federal do Amazonas (UFAM), Manaus, Amazonas, Brazil; Laboratório de Genômica, Fundação Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, Amazonas, Brazil
| | - Rajendranath Ramasawmy
- Fundação de Medicina Tropical Dr. Heitor Vieira Dourado (FMT-HVD), Manaus, Amazonas, Brazil; Laboratório de Genômica, Fundação Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, Amazonas, Brazil
| | - Grenda Leite Pereira
- Programa de Pós-Graduação em Imunologia Básica e Aplicada, Universidade Federal do Amazonas (UFAM), Manaus, Amazonas, Brazil; Laboratório de Genômica, Fundação Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, Amazonas, Brazil
| | - Diana Mota Toro
- Programa de Pós-Graduação em Imunologia Básica e Aplicada, Universidade Federal do Amazonas (UFAM), Manaus, Amazonas, Brazil; Laboratório de Genômica, Fundação Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, Amazonas, Brazil
| | - Lilyane de Amorim Xabregas
- Programa de Pós-Graduação em Imunologia Básica e Aplicada, Universidade Federal do Amazonas (UFAM), Manaus, Amazonas, Brazil; Programa de Pós-Graduação em Medicina Tropical, Universidade do Estado do Amazonas (UEA), Manaus, Amazonas, Brazil; Programa de Pós-Graduação em Ciências Aplicadas à Hematologia, Universidade do Estado do Amazonas (UEA), Manaus, Amazonas, Brazil
| | - Allyson Guimaraes Costa
- Programa de Pós-Graduação em Imunologia Básica e Aplicada, Universidade Federal do Amazonas (UFAM), Manaus, Amazonas, Brazil; Programa de Pós-Graduação em Medicina Tropical, Universidade do Estado do Amazonas (UEA), Manaus, Amazonas, Brazil; Fundação de Medicina Tropical Dr. Heitor Vieira Dourado (FMT-HVD), Manaus, Amazonas, Brazil; Laboratório de Genômica, Fundação Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, Amazonas, Brazil; Programa de Pós-Graduação em Ciências Aplicadas à Hematologia, Universidade do Estado do Amazonas (UEA), Manaus, Amazonas, Brazil
| | - Marilú Barbieri Victória
- Programa de Pós-Graduação em Medicina Tropical, Universidade do Estado do Amazonas (UEA), Manaus, Amazonas, Brazil; Fundação de Medicina Tropical Dr. Heitor Vieira Dourado (FMT-HVD), Manaus, Amazonas, Brazil
| | - Flamir da Silva Victória
- Programa de Pós-Graduação em Medicina Tropical, Universidade do Estado do Amazonas (UEA), Manaus, Amazonas, Brazil; Fundação de Medicina Tropical Dr. Heitor Vieira Dourado (FMT-HVD), Manaus, Amazonas, Brazil
| | - Adriana Malheiro
- Programa de Pós-Graduação em Imunologia Básica e Aplicada, Universidade Federal do Amazonas (UFAM), Manaus, Amazonas, Brazil; Laboratório de Genômica, Fundação Hospitalar de Hematologia e Hemoterapia do Amazonas (HEMOAM), Manaus, Amazonas, Brazil; Programa de Pós-Graduação em Ciências Aplicadas à Hematologia, Universidade do Estado do Amazonas (UEA), Manaus, Amazonas, Brazil.
| |
Collapse
|
32
|
Huang WL, Xu Y, Wan SP. Association of Toll-like 4 receptor gene polymorphism (rs4986790, rs4986791) with the risk of urinary tract infection: A systematic review and meta-analysis. Kaohsiung J Med Sci 2019; 36:206-211. [PMID: 31749314 DOI: 10.1002/kjm2.12158] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 10/28/2019] [Indexed: 11/06/2022] Open
Abstract
Recently published studies had shown that there may be a potential link between the Single nucleotide polymorphism (SNP) of Toll-like receptor-4 (TLR4), and the risk of urinary tract infection (UTI); however, no consensus was reached. To further understand the relationship between TLR SNPs and urinary tract infections, we searched for related studies published in PubMed, EMBASE, and Web of Science before October 30, 2018, for further systematic review and meta-analysis. Our study accrued 10 case-control studies, which included 1476 urinary tract infection patients and 1449 healthy controls in TLR4(rs4986790, rs4986791). R3.4.2 and Stata 15.0 software were used for the analysis. In general, there was no statistically significant association between rs4986790 and urinary tract infection in the four genetic models. However, in the subgroup analysis, the Asian population showed significantly difference in the allelic model (G vs A: OR = 1.88 [95% CI:1.42-2.49], P = .03). In addition, there were also significant differences in the dominant model (GG + AG vs AA OR = 1.97 [95% CI:1.46-2.66], P = .01). Due to the small number of available literatures, no meaningful conclusion can be drawn regarding the relationship between TLR4 (rs4986791) and the risk of urinary tract infections in general. Nevertheless, our meta-analysis shows that in Asian populations, TLR4 (rs4986790) may be associated with risk of urinary tract infection.
Collapse
Affiliation(s)
- Wen-Lin Huang
- Department of Urology, ZhuZhou Central Hospital, ZhuZhou, Hunan, China
| | - Yong Xu
- Department of Urology, ZhuZhou Central Hospital, ZhuZhou, Hunan, China
| | - Shaw-Pong Wan
- Department of Urology, The First People's Hospital of Xiaoshan, Hangzhou, Zhejiang, China
| |
Collapse
|
33
|
Ding J, Liu Q. Toll-like receptor 4: A promising therapeutic target for pneumonia caused by Gram-negative bacteria. J Cell Mol Med 2019; 23:5868-5875. [PMID: 31350813 PMCID: PMC6714139 DOI: 10.1111/jcmm.14529] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 06/11/2019] [Accepted: 06/15/2019] [Indexed: 02/06/2023] Open
Abstract
Gram‐negative bacteria (GNB) emerge as important pathogens causing pulmonary infection, which can develop into sepsis due to bacterial resistance to antibiotics. GNB pneumonia poses a huge social and economic burden all over the world. During GNB infection in the lung, Toll‐like receptor 4 (TLR4) can form a complex with MD2 and CD14 after recognizing lipopolysaccharide of GNB, initiate the MyD88‐ and TRIF‐dependent signalling pathways and stimulate host non‐specific immune response. In this review, we summarize recent progress in our understanding of the role of TLR4 in GNB pneumonia. The latest experimental results, especially in TLR4 knockout animals, suggest a promising potential of targeting TLR4 signalling pathway for the treatment of GNB pneumonia. Furthermore, we highlight the benefits of Traditional Chinese Medicine as novel candidates for the therapy of GNB pneumonia due to the modulation of TLR4 signalling pathway. Finally, we discuss the promise and challenge in the development of TLR4‐based drugs for GNB pneumonia.
Collapse
Affiliation(s)
- Junying Ding
- Beijing Key Laboratory of Basic Research with Traditional Chinese Medicine on Infectious Diseases, Beijing, China.,Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China.,Beijing Institute of Traditional Chinese Medicine, Beijing, China
| | - Qingquan Liu
- Beijing Key Laboratory of Basic Research with Traditional Chinese Medicine on Infectious Diseases, Beijing, China.,Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China.,Beijing Institute of Traditional Chinese Medicine, Beijing, China
| |
Collapse
|
34
|
Association of TLR4 with Alzheimer's disease risk and presymptomatic biomarkers of inflammation. Alzheimers Dement 2019; 15:951-960. [PMID: 31175027 DOI: 10.1016/j.jalz.2019.03.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 03/22/2019] [Accepted: 03/25/2019] [Indexed: 12/23/2022]
Abstract
INTRODUCTION A coding variant in the TLR4 receptor (rs4986790), previously associated with longevity and Alzheimer's disease (AD) risk reduction, was examined in a population isolate (Québec Founder Population [QFP]) and in presymptomatic individuals with a parental history of AD (Pre-Symptomatic Evaluation of Novel or Experimental Treatment for Alzheimer's Disease [PREVENT-AD]). METHODS Genotyping was performed using the Illumina HumanHap 550k (QFP) and the Illumina Omni2.5 beadchips (PREVENT-AD). Cognition was assessed using the Repeatable Battery for Assessment of Neuropsychological Status (RBANS). Whole-brain cortical thickness data were analyzed using CIVET 1.12. Cerebrospinal fluid concentrations of cytokines were obtained by using Milliplex. RESULTS The minor allele of the rs4986790 polymorphism (G) is associated with a reduced risk of developing AD in the QFP, as well as higher visuospatial and constructional abilities, higher cortical thickness in visual-related regions, and stable cerebrospinal fluid IL-1β levels in the PREVENT-AD cohort. DISCUSSION The rs4986790 G coding variant in the TLR4 gene appears to reduce AD risk through the modulation of IL-1β synthesis and secretion in the presymptomatic phase of the disease.
Collapse
|
35
|
Chen T, Luo W, Wu G, Wu L, Huang S, Li J, Wang J, Hu X, Huang W, Liang G. A novel MyD88 inhibitor LM9 prevents atherosclerosis by regulating inflammatory responses and oxidative stress in macrophages. Toxicol Appl Pharmacol 2019; 370:44-55. [DOI: 10.1016/j.taap.2019.03.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 03/11/2019] [Accepted: 03/12/2019] [Indexed: 02/01/2023]
|
36
|
Zhou S, Du R, Wang Z, Shen W, Gao R, Jiang S, Fang Y, Shi Y, Chang A, Liu L, Liu C, Li N, Xiang R. TLR4 increases the stemness and is highly expressed in relapsed human hepatocellular carcinoma. Cancer Med 2019; 8:2325-2337. [PMID: 30957973 PMCID: PMC6536932 DOI: 10.1002/cam4.2070] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Revised: 02/10/2019] [Accepted: 02/13/2019] [Indexed: 12/12/2022] Open
Abstract
Toll‐like receptor 4 (TLR4) plays an essential role in cancer progress. Here, we find that the expression of TLR4 in relapsed human hepatocellular carcinoma (HCC) clinical samples is higher than that in the non‐relapsed ones, which leads us to explore the role of TLR4 in cancer stemness. We reported that TLR4‐AKT signaling pathway was activated by lipopolysaccharides (LPS) in HCC cell lines to enhance the cancer stemness capacity, which was reflected by the increased percentage of CD133+CD49f+ population and side population, enhanced sphere formation, and the upregulation of stemness marker gene‐SOX2. Downregulation of SOX2 attenuated the enhanced HCC stemness induced by LPS, indicating SOX2 as a downstream mediator of LPS‐TLR4 signaling. The role of LPS‐TLR4 signaling in inducing HCC stemness was further confirmed by tumor xenograft experiment in vivo. Taken together, our findings provide a novel therapeutic target to prevent the recurrence of HCC.
Collapse
Affiliation(s)
- Shuang Zhou
- School of Medicine, Nankai University, Tianjin, China
| | - Renle Du
- School of Medicine, Nankai University, Tianjin, China
| | - Zhenglu Wang
- Biobank of Tianjin First Center Hospital, Tianjin, China
| | - Wenzhi Shen
- School of Medicine, Nankai University, Tianjin, China
| | - Ruifang Gao
- School of Medicine, Nankai University, Tianjin, China
| | - Shan Jiang
- School of Medicine, Nankai University, Tianjin, China
| | - Yan Fang
- School of Medicine, Nankai University, Tianjin, China
| | - Yuzhi Shi
- School of Medicine, Nankai University, Tianjin, China
| | - Antao Chang
- School of Medicine, Nankai University, Tianjin, China
| | - Lei Liu
- Biobank of Tianjin First Center Hospital, Tianjin, China
| | - Chenghu Liu
- School of Medicine, Nankai University, Tianjin, China
| | - Na Li
- School of Medicine, Nankai University, Tianjin, China.,Tianjin Key Laboratory of Tumor Microenvironment and Neurovascular Regulation, Tianjin, China.,The 2011 Project Collaborative Innovation Center for Biological Therapy, Nankai University, Tianjin, China
| | - Rong Xiang
- School of Medicine, Nankai University, Tianjin, China.,Tianjin Key Laboratory of Tumor Microenvironment and Neurovascular Regulation, Tianjin, China.,The 2011 Project Collaborative Innovation Center for Biological Therapy, Nankai University, Tianjin, China
| |
Collapse
|
37
|
Kumar V. Toll-like receptors in the pathogenesis of neuroinflammation. J Neuroimmunol 2019; 332:16-30. [PMID: 30928868 DOI: 10.1016/j.jneuroim.2019.03.012] [Citation(s) in RCA: 216] [Impact Index Per Article: 43.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 03/19/2019] [Accepted: 03/19/2019] [Indexed: 12/17/2022]
Abstract
Toll-like receptors (TLRs) are discovered as crucial pattern recognition receptors (PRRs) involved in the recognition of pathogen-associated molecular patterns (PAMPs). Later studies showed their involvement in the recognition of various damage/danger-associated molecular patterns (DAMPs) generated by host itself. Thus, TLRs are capable of recognizing wide-array of patterns/molecules derived from pathogens and host as well and initiating a proinflammatory immune response through the activation of NF-κB and other transcription factors causing synthesis of proinflammatory molecules. The process of neuroinflammation is seen under both sterile and infectious inflammatory diseases of the central nervous system (CNS) and may lead to the development of neurodegeneration. The present article is designed to highlight the importance of TLRs in the pathogenesis of neuroinflammation under diverse conditions. TLRs are expressed by various immune cells present in CNS along with neurons. However out of thirteen TLRs described in mammals, some are present and active in these cells, while some are absent and are described in detail in main text. The role of various immune cells present in the brain and their role in the pathogenesis of neuroinflammation depending on the type of TLR expressed is described. Thereafter the role of TLRs in bacterial meningitis, viral encephalitis, stroke, Alzheimer's disease (AD), Parkinson's disease (PD), and autoimmune disease including multiple sclerosis (MS) is described. The article is designed for both neuroscientists needing information regarding TLRs in neuroinflammation and TLR biologists or immunologists interested in neuroinflammation.
Collapse
Affiliation(s)
- V Kumar
- Children Health Clinical Unit, School of Clinical Medicine, Faculty of Medicine, Mater Research, University of Queensland, ST Lucia, Brisbane, Queensland 4078, Australia; School of Biomedical Sciences, Faculty of Medicine, University of Queensland, ST Lucia, Brisbane, Queensland 4078, Australia.
| |
Collapse
|
38
|
Vidyant S, Chatterjee A, Dhole TN. A single-nucleotide polymorphism in TLR4 is linked with the risk of HIV-1 infection. Br J Biomed Sci 2019; 76:59-63. [PMID: 30569830 DOI: 10.1080/09674845.2018.1559486] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
INTRODUCTION Toll-like receptors (TLRs) are pattern recognition receptors that play a role in innate immunity. Mounting evidence shows that single-nucleotide polymorphisms (SNPs) in TLRs link to various infectious diseases, including human immunodeficiency virus (HIV). We hypothesized links between two TLR4 SNPs (rs4986790 leading to Asp299Gly and rs4986791 leading to Thr399Ile) and HIV, to investigate the frequency of TLR4 polymorphism and its role in patients infected with HIV. MATERIALS AND METHODS We recruited 160 HIV-1 seropositive patients, who were further divided on disease severity based on CD4 count (stages I, II and III), and 270 age- and sex matched healthy HIV-1 seronegative individuals. Subjects were genotyped for TLR4 gene polymorphism by polymerase chain reaction restriction fragment length polymorphism. RESULTS The TLR4 Asp299Gly heterozygous genotype (OR=2.160; p=0.004) and the mutant allele G (OR=2.051; p=0.002) was higher in HIV-1 infection than healthy controls and also in stage I (OR=2.559; p=0.034) compared to different clinical stages of infection. There was no link between the Thr399Ile polymorphism and HIV infection. CONCLUSION The TLR4 (Asp299Gly) SNP is a risk factor in HIV-1 disease susceptibility.
Collapse
Affiliation(s)
- S Vidyant
- a Department of Microbiology , Sanjay Gandhi Post Graduate Institute of Medical Sciences , Lucknow , India
| | - A Chatterjee
- b Department of Biomedical sciences , Texas Tech University Health Sciences center , El Paso , TX , USA
| | - T N Dhole
- a Department of Microbiology , Sanjay Gandhi Post Graduate Institute of Medical Sciences , Lucknow , India
| |
Collapse
|
39
|
Chi ZC. Intestinal microbiome and autoimmune liver disease. Shijie Huaren Xiaohua Zazhi 2019; 27:50-62. [DOI: 10.11569/wcjd.v27.i1.50] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
At present, it has been proved that intestinal microbial-related disorders are involved in the development and progression of multi-organ system diseases. Intestinal microflora is the accumulation of microbial antigens and activated immune cells. Changes in the composition of intestinal microflora (biological disorders) can destroy the systemic immune tolerance of intestinal and symbiotic bacteria. Toll-like receptors in the intestine recognize microbial-related molecular patterns and T helper lymphocyte subpopulations that can cross-react with host antigens (molecular mimics). Activated enterogenous lymphocytes can migrate to lymph nodes, and enterogenous microbial antigens can migrate to extraintestinal sites. Inflammasomes can form in hepatocytes and hepatic stellate cells, which can drive inflammatory, immune-mediated and fibrotic responses. This article reviews and evaluates the role of intestinal microorganisms in the pathogenesis and treatment of autoimmune liver disease.
Collapse
Affiliation(s)
- Zhao-Chun Chi
- Department of Gastroenterology, Qingdao Municipal Hospital, Affiliated Hospital of Shandong University Medical College, Qingdao 266011, Shandong Province, China
| |
Collapse
|
40
|
Li P, Wang H, Zhao X, Gou Z, Liu R, Song Y, Li Q, Zheng M, Cui H, Everaert N, Zhao G, Wen J. Allelic variation in TLR4 is linked to resistance to Salmonella Enteritidis infection in chickens. Poult Sci 2018; 96:2040-2048. [PMID: 28339850 DOI: 10.3382/ps/pex010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 12/21/2016] [Indexed: 12/19/2022] Open
Abstract
Salmonella Enteritidis (SE) is a foodborne pathogen that negatively affects both animal and human health. Polymorphisms of the TLR4 gene may affect recognition by Toll-like receptor 4 (TLR4) of bacterial lipopolysaccharide (LPS), leading to differences in host resistance to pathogenic infections. The present study has investigated polymorphic loci of chicken TLR4 (ChTLR4) in ten chicken breeds, electrostatic potentials of mutant structures of TLR4, and a linkage analysis between allelic variation and survival ratio to infection with SE in specific-pathogen-free (SPF) White Leghorns. A total of 19 Single Nucleotide Polymorphisms (SNPs), of which 10 were novel, were found in chicken breeds. Seven newly identified amino acid variants (C68G, G674A, G782A, A896T, T959G, T986A, and A1104C) and previously reported important mutations (G247A, G1028A, C1147T, and A1832G) were demonstrated in the extracellular domain of the ChTLR4 gene. Significant changes in surface electrostatic potential of the ectodomain of TLR4, built by homology modeling, were observed at the Glu83Lys (G247A), Arg298Ser (A896T), Ser368Arg (A1104C), and Gln611Arg (A1832G) substitutions. Linkage analysis showed that one polymorphic locus G247A of TLR4 gene, common in all breeds examined, was significantly associated with increased resistance to SE in SPF White Leghorns chicks (log-rank P-value = 0.04). The genotypes from A1832G SNPs did not show statistically significant survival differences. This study has provided the first direct evidence that G247A substitution in ChTLR4 is associated with increased resistance to Salmonella Enteritidis.
Collapse
Affiliation(s)
- Peng Li
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.,University of Liège, Gembloux Agro-Bio Tech, Precision Livestock and Nutrition Unit, Passage des Déportés 2, 5030 Gembloux, Belgium
| | - Huihua Wang
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, 100093, China
| | - Xingwang Zhao
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Zhongyong Gou
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Ranran Liu
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yongmei Song
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Qinghe Li
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Maiqing Zheng
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Huanxian Cui
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Nadia Everaert
- University of Liège, Gembloux Agro-Bio Tech, Precision Livestock and Nutrition Unit, Passage des Déportés 2, 5030 Gembloux, Belgium
| | - Guiping Zhao
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Jie Wen
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| |
Collapse
|
41
|
Yao D, Su H, Zhu J, Zhao X, Aweya JJ, Wang F, Zhong M, Zhang Y. SNPs in the Toll1 receptor of Litopenaeus vannamei are associated with immune response. FISH & SHELLFISH IMMUNOLOGY 2018; 72:410-417. [PMID: 29146444 DOI: 10.1016/j.fsi.2017.11.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 10/31/2017] [Accepted: 11/10/2017] [Indexed: 06/07/2023]
Abstract
Tolls and Toll-like receptors (TLRs) are important regulators in the innate immune system and their genetic variations usually affect the host's susceptibility/resistance to pathogen infections. In this study, we report on the single nucleotide polymorphisms (SNPs) of Toll1 in Litopenaeus vannamei (LvToll1) and how this is associated with immune response. PCR-DGGE analysis revealed genetic polymorphisms in LvToll1 at both the genomic DNA (gDNA) and cDNA levels. Using high-throughput sequencing, 223 SNPs were identified at the gDNA level, of which 145 were non-synonymous SNP (nsSNP), with 3 nsSNPs having frequency over 1%. On the other hand, 60 SNPs were identified at the cDNA level including 38 nsSNPs and 4 nsSNPs with frequency over 1%. Upon challenging shrimps with Streptococcus iniae, Vibrio parahaemolyticus and white spot syndrome virus (WSSV), LvToll1 was shown to generate 6, 4 and 4 novel bands, respectively when analyzed with PCR-DGGE. Sequencing analysis of these bands showed that they contained 6, 4 and 2 nsSNPs, respectively. Moreover, the nsSNP C1526T was detected in S. iniae-resistant but not in susceptible shrimps. Most significantly, the C1526T mutation could shorten the α-helix of the LRR domain and was predicted to affect the function of LvToll1, indicating that SNP C1526T might be associated with shrimp's resistance to pathogen infections. In sum, our findings here reveal that the genetic polymorphisms of Toll receptor are linked with the immune response to pathogen infections in L. vannamei.
Collapse
Affiliation(s)
- Defu Yao
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Huimin Su
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Jinghua Zhu
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Xianliang Zhao
- College of Fisheries, Henan Normal University, Xinxiang 453007, China
| | - Jude Juventus Aweya
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Fan Wang
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Mingqi Zhong
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Yueling Zhang
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China.
| |
Collapse
|
42
|
Iqbal MS, Ashfaq UA, Khaliq S, Masoud MS, Qasim M, Haque A, Ghani MU, Jahan S. Toll-like receptor 4 polymorphism as pretreatment predictor of response to HCV genotype 3a interferon-based treatment. Future Virol 2017. [DOI: 10.2217/fvl-2017-0076] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Polymorphisms in Toll-like receptor 4 (TLR4) gene may exaggerate the chances and pathogenesis of HCV. Aim: This study intends to examine the relationship of genetic polymorphisms of TLR4 with HCV disease in Pakistani patients. Methodology: For this purpose, 500 blood samples were collected to confirm the genetic profile of all the subjects. Results: Single nucleotide polymorphism (SNP) in the TLR4 gene, rs4986790 (A>G), was genotyped in 400 HCV infected and 100 healthy individuals. The TLR4 gene was associated with a significantly increased risk of HCV-related diseases in comparing genotype assessments in patients and controls (pooled OR [95%CI]: 1.671 [0.946–2.949] for dominant; 0.503 [0.221–1.145] for recessive; 2.33 [1.518–3.576] for allele frequency). Subgroup analyses showed an increased risk of HCV infection and effect on interferon therapy associated with AA+AG/GG genotypes of rs4986790 (2.033 [1.094–3.778]). Conclusion: TLR4 SNP rs4986790 was found to be related to HCV-infected patients in the Pakistani population.
Collapse
Affiliation(s)
- Muhammad Sarfaraz Iqbal
- Department of Bioinformatics & Biotechnology, Government College University, Faisalabad, Pakistan
| | - Usman Ali Ashfaq
- Department of Bioinformatics & Biotechnology, Government College University, Faisalabad, Pakistan
| | - Saba Khaliq
- Department of Physiology, University of Health Sciences, Lahore, Pakistan
| | - Muhammad Shareef Masoud
- Department of Bioinformatics & Biotechnology, Government College University, Faisalabad, Pakistan
| | - Muhammad Qasim
- Department of Bioinformatics & Biotechnology, Government College University, Faisalabad, Pakistan
| | - Asma Haque
- Department of Bioinformatics & Biotechnology, Government College University, Faisalabad, Pakistan
| | - Muhammad Usman Ghani
- Department of Bioinformatics & Biotechnology, Government College University, Faisalabad, Pakistan
| | - Shah Jahan
- Department of Physiology, University of Health Sciences, Lahore, Pakistan
| |
Collapse
|
43
|
Gond DP, Singh S, Agrawal NK. Testing an association between TLR4 and CXCR1 gene polymorphisms with susceptibility to urinary tract infection in type 2 diabetes in north Indian population. Gene 2017; 641:196-202. [PMID: 29066305 DOI: 10.1016/j.gene.2017.10.060] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Revised: 10/18/2017] [Accepted: 10/20/2017] [Indexed: 12/21/2022]
Abstract
BACKGROUND Genetic variations of Toll like receptor 4 (TLR4) and CXC-chemokine receptor type1 (CXCR1), the key elements of innate immune system and their association with urinary tract infection (UTI) were studied in general population. In present study we investigate genetic variation of these genes in diabetic patients (3 to 4 times higher prevalence of UTI in comparison to general population). METHODS A total 1100 subjects (318 diabetic patients with UTI, 324 diabetic patients without UTI, 200 non-diabetic UTI patients and 260 age matched healthy control) were enrolled in the study. SNPs of TLR4 rs4986790, rs4986791 and CXCR1 rs2234671 was assessed by PCR-RFLP and PCR-SSP respectively. RESULTS Statistical analysis revealed that A/G genotype and G allele of TLR4 rs4986790 are significantly associated with UTI in both diabetics and nondiabetic patients in comparison to healthy control. Similarly CT genotype and T allele of TLR4 rs4986791 are also significantly associated with UTI in both groups. We also found that prevalence of A/G genotype of TLR4 rs4986790 and CT genotype of TLR4 rs4986791 are significantly higher in patients of diabetes with UTI in comparison to diabetic patients without UTI. We did not find any association of CXCR1 rs2234671 polymorphism with UTI by comparing with any group. CONCLUSION We found that TLR4 rs4986790 and rs4986791 gene polymorphism is a risk for UTI development in both diabetic and nondiabetic patients in north Indian population.
Collapse
Affiliation(s)
- Dinesh Prasad Gond
- Department of Endocrinology and Metabolism, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Shivendra Singh
- Department of Nephrology, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - N K Agrawal
- Department of Endocrinology and Metabolism, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India.
| |
Collapse
|
44
|
Expression level of human TLR4 rather than sequence is the key determinant of LPS responsiveness. PLoS One 2017; 12:e0186308. [PMID: 29020088 PMCID: PMC5636155 DOI: 10.1371/journal.pone.0186308] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 09/28/2017] [Indexed: 12/14/2022] Open
Abstract
To address the role of Toll-like receptor 4 (TLR4) single nucleotide polymorphisms (SNP) in lipopolysaccharide (LPS) recognition, we generated mice that differed only in the sequence of TLR4. We used a bacterial artificial chromosome (BAC) transgenic approach and TLR4/MD-2 knockout mice to specifically examine the role of human TLR4 variants in recognition of LPS. Using in vitro and in vivo assays we found that the expression level rather than the sequence of TLR4 played a larger role in recognition of LPS, especially hypoacylated LPS.
Collapse
|
45
|
Huang C, Zhang H, Bai R, Wang L, Lv J. A896G and C1196T Polymorphisms Within the TLR4 Gene Abate Toll-Like Receptor 4-Mediated Signaling in HepG2 Cells. DNA Cell Biol 2017; 36:1029-1038. [PMID: 28945461 DOI: 10.1089/dna.2017.3892] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Toll-like receptor 4 (TLR4) appears to play an important role in the development and progression of hepatocellular carcinoma (HCC), but it is unclear whether single-nucleotide polymorphisms (SNPs) in the TLR4 gene influence HCC. In this study, we investigated the effects of TLR4 SNPs on HepG2 cell survival and proliferation, migration, and invasion. Plasmids carrying wild-type or mutant versions of the TLR4 gene (A896G and/or C1196T) were stably transfected into HepG2 cells, and cell viability and proliferation were analyzed using the Cell Counting Kit-8 (CCK-8) and 5-ethynyl-2'-deoxyuridine (EdU) incorporation assays, whereas apoptosis was assessed using flow cytometry. Migration and invasion were measured in a transwell chamber assay, and expression of inflammatory cytokines and downstream effectors was examined using real-time PCR and western blotting. Specific inhibitors of c-Jun N-terminal kinase (JNK), extracellular signal-regulated kinase (ERK), or phosphatidylinositol 3-kinase (PI3K) were added to the HepG2 cultures to explore the potential role of each pathway in TLR4 signaling. TLR4 SNPs did not affect expression levels in transfected cells. Compared with wild-type TLR4, mutant TLR4 was associated with lower cell proliferation, migration, invasion, and apoptotic threshold. In addition, the mutations were associated with significantly lower expression of nuclear factor κB (NF-κB), IL-6, and TGF-β1, even after stimulation with lipopolysaccharide. The expression of p-Akt was similar in the presence of wild-type or mutant TLR4. The 896G and 1196T SNPs in the TLR4 gene are associated with reduced TLR4-mediated signaling and, therefore, with lower survival, proliferation, and metastasis in HepG2 cells.
Collapse
Affiliation(s)
- Cuiyuan Huang
- Department of Pharmacy, Renmin Hospital of Wuhan University , Wuhan, China
| | - Hong Zhang
- Department of Pharmacy, Renmin Hospital of Wuhan University , Wuhan, China
| | - Ruidan Bai
- Department of Pharmacy, Renmin Hospital of Wuhan University , Wuhan, China
| | - Li Wang
- Department of Pharmacy, Renmin Hospital of Wuhan University , Wuhan, China
| | - Jian Lv
- Department of Pharmacy, Renmin Hospital of Wuhan University , Wuhan, China
| |
Collapse
|
46
|
Allelic Variation in the Toll-Like Receptor Adaptor Protein Ticam2 Contributes to SARS-Coronavirus Pathogenesis in Mice. G3-GENES GENOMES GENETICS 2017; 7:1653-1663. [PMID: 28592648 PMCID: PMC5473747 DOI: 10.1534/g3.117.041434] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Host genetic variation is known to contribute to differential pathogenesis following infection. Mouse models allow direct assessment of host genetic factors responsible for susceptibility to Severe Acute Respiratory Syndrome coronavirus (SARS-CoV). Based on an assessment of early stage lines from the Collaborative Cross mouse multi-parent population, we identified two lines showing highly divergent susceptibilities to SARS-CoV: the resistant CC003/Unc and the susceptible CC053/Unc. We generated 264 F2 mice between these strains, and infected them with SARS-CoV. Weight loss, pulmonary hemorrhage, and viral load were all highly correlated disease phenotypes. We identified a quantitative trait locus of major effect on chromosome 18 (27.1–58.6 Mb) which affected weight loss, viral titer and hemorrhage. Additionally, each of these three phenotypes had distinct quantitative trait loci [Chr 9 (weight loss), Chrs 7 and 12 (virus titer), and Chr 15 (hemorrhage)]. We identified Ticam2, an adaptor protein in the TLR signaling pathways, as a candidate driving differential disease at the Chr 18 locus. Ticam2−/− mice were highly susceptible to SARS-CoV infection, exhibiting increased weight loss and more pulmonary hemorrhage than control mice. These results indicate a critical role for Ticam2 in SARS-CoV disease, and highlight the importance of host genetic variation in disease responses.
Collapse
|
47
|
Fessler MB, Carnes MU, Salo PM, Wilkerson J, Cohn RD, King D, Hoppin JA, Sandler DP, Travlos G, London S, Thorne P, Zeldin D. House Dust Endotoxin and Peripheral Leukocyte Counts: Results from Two Large Epidemiologic Studies. ENVIRONMENTAL HEALTH PERSPECTIVES 2017; 125:057010. [PMID: 28599265 PMCID: PMC5730525 DOI: 10.1289/ehp661] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 09/13/2016] [Accepted: 09/27/2016] [Indexed: 06/07/2023]
Abstract
BACKGROUND The peripheral leukocyte count is a biomarker of inflammation and is associated with human all-cause mortality. Although causes of acute leukocytosis are well-described, chronic environmental determinants of leukocyte number are less well understood. OBJECTIVES We investigated the relationship between house dust endotoxin concentration and peripheral leukocyte counts in human subjects. METHODS The endotoxin–leukocyte relationship was evaluated by linear regression in the National Health and Nutrition Examination Survey (NHANES) 2005–2006 (n=6,254) and the Agricultural Lung Health Study (ALHS; n=1,708). In the ALHS, we tested for a gene [Toll-like Receptor 4 (TLR4), encoding the endotoxin receptor]-by-environment interaction in the endotoxin–leukocyte relationship using regression models with an interaction term. RESULTS There is a statistically significant, positive association between endotoxin concentration and total leukocyte number [estimated change, 0.186×103/μL (95% CI: 0.070, 0.301×103/μL) per 10-fold change in endotoxin; p=0.004) in the NHANES. Similar positive associations were found for monocytes, lymphocytes, and neutrophils. Stratified analyses revealed possible effect modification by asthma and chronic obstructive pulmonary disease. We observed similar associations in the ALHS. For total leukocytes, there was suggestive evidence in the ALHS of a gene-by-environment interaction for minor allele carrier status at the TLR4 haplotype defined by rs4986790 and rs4986791 (interaction p=0.15). CONCLUSIONS This is, to our knowledge, the first report of an association between house dust endotoxin and leukocyte count in a national survey. The finding was replicated in a farming population. Peripheral leukocyte count may be influenced by residential endotoxin exposure in diverse settings. https://doi.org/10.1289/EHP661.
Collapse
Affiliation(s)
- Michael B Fessler
- Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Research Triangle Park, North Carolina, USA
| | - Megan U Carnes
- Epidemiology Branch, NIEHS, NIH, DHHS, Research Triangle Park, North Carolina, USA
| | - Päivi M Salo
- Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Research Triangle Park, North Carolina, USA
| | - Jesse Wilkerson
- Social & Scientific Systems, Inc., Durham, North Carolina, USA
| | - Richard D Cohn
- Social & Scientific Systems, Inc., Durham, North Carolina, USA
| | - Debra King
- Clinical Pathology Group, NIEHS, NIH, DHHS, Research Triangle Park, North Carolina, USA
| | - Jane A Hoppin
- Department of Biological Sciences and Center for Human Health and the Environment, North Carolina State University, Raleigh, North Carolina, USA
| | - Dale P Sandler
- Epidemiology Branch, NIEHS, NIH, DHHS, Research Triangle Park, North Carolina, USA
| | - Greg Travlos
- Clinical Pathology Group, NIEHS, NIH, DHHS, Research Triangle Park, North Carolina, USA
| | - Stephanie London
- Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Research Triangle Park, North Carolina, USA
- Epidemiology Branch, NIEHS, NIH, DHHS, Research Triangle Park, North Carolina, USA
| | - Peter Thorne
- Department of Occupational and Environmental Health, College of Public Health, University of Iowa, Iowa City, Iowa 52242, USA
| | - Darryl Zeldin
- Immunity, Inflammation and Disease Laboratory, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Research Triangle Park, North Carolina, USA
| |
Collapse
|
48
|
Pattabiraman G, Panchal R, Medvedev AE. The R753Q polymorphism in Toll-like receptor 2 (TLR2) attenuates innate immune responses to mycobacteria and impairs MyD88 adapter recruitment to TLR2. J Biol Chem 2017; 292:10685-10695. [PMID: 28442574 DOI: 10.1074/jbc.m117.784470] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 04/15/2017] [Indexed: 12/28/2022] Open
Abstract
Toll-like receptor 2 (TLR2) plays a critical role in host defenses against mycobacterial infections. The R753Q TLR2 polymorphism has been associated with increased incidence of tuberculosis and infections with non-tuberculous mycobacteria in human populations, but the mechanisms by which this polymorphism affects TLR2 signaling are unclear. In this study, we determined the impact of the R753Q TLR2 polymorphism on macrophage sensing of Mycobacterium smegmatis Upon infection with M. smegmatis, macrophages from knock-in mice harboring R753Q TLR2 expressed lower levels of TNF-α, IL-1β, IL-6, and IL-10 compared with cells from WT mice, but both R753Q TLR2- and WT-derived macrophages exhibited comparable bacterial burdens. The decreased cytokine responses in R753Q TLR2-expressing macrophages were accompanied by impaired phosphorylation of IL-1R-associated kinase 1 (IRAK-1), p38, ERK1/2 MAPKs, and p65 NF-κB, suggesting that the R753Q TLR2 polymorphism alters the functions of the myeloid differentiation primary response protein 88 (MyD88)-IRAK-dependent signaling axis. Supporting this notion, HEK293 cells stably transfected with YFP-tagged R753Q TLR2 displayed reduced recruitment of MyD88 to TLR2, decreased NF-κB activation, and impaired IL-8 expression upon exposure to M. smegmatis Collectively, our results indicate that the R753Q polymorphism alters TLR2 signaling competence, leading to impaired MyD88-TLR2 assembly, reduced phosphorylation of IRAK-1, diminished activation of MAPKs and NF-κB, and deficient induction of cytokines in macrophages infected with M. smegmatis.
Collapse
Affiliation(s)
- Goutham Pattabiraman
- From the Department of Immunology, University of Connecticut Health Center, Farmington, Connecticut 06030
| | - Rahul Panchal
- From the Department of Immunology, University of Connecticut Health Center, Farmington, Connecticut 06030
| | - Andrei E Medvedev
- From the Department of Immunology, University of Connecticut Health Center, Farmington, Connecticut 06030
| |
Collapse
|
49
|
Piñero P, Juanola O, Caparrós E, Zapater P, Giménez P, González-Navajas JM, Such J, Francés R. Toll-like receptor polymorphisms compromise the inflammatory response against bacterial antigen translocation in cirrhosis. Sci Rep 2017; 7:46425. [PMID: 28418003 PMCID: PMC5394473 DOI: 10.1038/srep46425] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 03/20/2017] [Indexed: 12/16/2022] Open
Abstract
Bacterial translocation is associated with clinically relevant complications in cirrhosis. We evaluated the effect of toll-like receptor polymorphisms in the soluble response against these episodes. Consecutive patients with cirrhosis and ascitic fluid were distributed by TLR2 rs4696480, TLR4 rs4986790, and TLR9 rs187084 single-nucleotide polymorphisms. Lipoteichoic acid, lipopolyssaccharide, bacterial-DNA, pro-inflammatory cytokines and nitric oxide levels were quantified in serum samples. In vitro response against specific ligands in variant TLR genotypes was evaluated. One hundred and fourteen patients were included. Variant TLR-2, TLR-4 and TLR-9 SNP genotypes were associated with significantly increased serum levels of LTA, LPS and bacterial-DNA. TNF-α, IL-6 and nitric oxide serum levels were significantly decreased in all variant TLR genotyped patients. Cytokine levels were significantly less upregulated in response to specific TLR-ligands in patients with all variant vs wildtype TLR genotypes. Although in vitro gene expression levels of all wildtype and variant TLRs were similar, MyD88 and NFkB were significantly downregulated in cells from TLR-variant genotyped patients in response to their ligands. Variant TLR genotypes are associated with an increased circulating antigen burden and a decreased proinflammatory response in cirrhosis. This immunodeficiency may facilitate bacteria-related complications in cirrhosis and enhance TLR targeting for its management.
Collapse
Affiliation(s)
- Paula Piñero
- Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL-Fundación FISABIO), Alicante, Spain
| | - Oriol Juanola
- Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL-Fundación FISABIO), Alicante, Spain
| | - Esther Caparrós
- Dpto. Medicina Clínica, Universidad Miguel Hernández, San Juan, Spain
| | - Pedro Zapater
- Servicio de Farmacología Clínica, Hospital General Universitario de Alicante, Alicante, Spain
- CIBERehd, Instituto de Salud Carlos III, Madrid, Spain
| | - Paula Giménez
- CIBERehd, Instituto de Salud Carlos III, Madrid, Spain
| | - José M. González-Navajas
- Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL-Fundación FISABIO), Alicante, Spain
- CIBERehd, Instituto de Salud Carlos III, Madrid, Spain
| | - José Such
- Digestive Disease Institute, Cleveland Clinic Abu Dhabi, UAE
| | - Rubén Francés
- Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL-Fundación FISABIO), Alicante, Spain
- Dpto. Medicina Clínica, Universidad Miguel Hernández, San Juan, Spain
- CIBERehd, Instituto de Salud Carlos III, Madrid, Spain
| |
Collapse
|
50
|
Anwar MA, Choi S. Structure-Activity Relationship in TLR4 Mutations: Atomistic Molecular Dynamics Simulations and Residue Interaction Network Analysis. Sci Rep 2017; 7:43807. [PMID: 28272553 PMCID: PMC5341570 DOI: 10.1038/srep43807] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 01/27/2017] [Indexed: 02/06/2023] Open
Abstract
Toll-like receptor 4 (TLR4), a vital innate immune receptor present on cell surfaces, initiates a signaling cascade during danger and bacterial intrusion. TLR4 needs to form a stable hexamer complex, which is necessary to dimerize the cytoplasmic domain. However, D299G and T399I polymorphism may abrogate the stability of the complex, leading to compromised TLR4 signaling. Crystallography provides valuable insights into the structural aspects of the TLR4 ectodomain; however, the dynamic behavior of polymorphic TLR4 is still unclear. Here, we employed molecular dynamics simulations (MDS), as well as principal component and residue network analyses, to decipher the structural aspects and signaling propagation associated with mutations in TLR4. The mutated complexes were less cohesive, displayed local and global variation in the secondary structure, and anomalous decay in rotational correlation function. Principal component analysis indicated that the mutated complexes also exhibited distinct low-frequency motions, which may be correlated to the differential behaviors of these TLR4 variants. Moreover, residue interaction networks (RIN) revealed that the mutated TLR4/myeloid differentiation factor (MD) 2 complex may perpetuate abnormal signaling pathways. Cumulatively, the MDS and RIN analyses elucidated the mutant-specific conformational alterations, which may help in deciphering the mechanism of loss-of-function mutations.
Collapse
Affiliation(s)
- Muhammad Ayaz Anwar
- Department of Molecular Science and Technology, Ajou University, Suwon 443-749, Korea
| | - Sangdun Choi
- Department of Molecular Science and Technology, Ajou University, Suwon 443-749, Korea
| |
Collapse
|