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Peng Y, Chen B, Sheng X, Qian Y. The Genetic Association Between TLR-1, -2, -4, and -6 Gene Polymorphisms and Rheumatoid Arthritis Susceptibility in a Chinese Han Population. Genet Test Mol Biomarkers 2022; 26:140-145. [PMID: 35254871 DOI: 10.1089/gtmb.2021.0207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Aims: The toll-like receptor (TLR) genes were shown to be involved in the pathogenesis of rheumatoid arthritis (RA). We aimed to investigate the genetic associations between the TLR-1, -2, -4, and -6 genes polymorphisms and RA susceptibility in a Chinese Han population. Methods: Six polymorphisms [TLR-1 (rs5743610, rs5743618), -2 (rs5743708), -4 (rs4986790, rs4986791), and -6 (rs5743810)] in TLRs genes were genotyped in 360 patients with RA and 560 matched healthy controls by using direct sequencing method. The odds ratios (ORs) and 95% confidence intervals (CIs) were evaluated using a standard logistic regression analysis. Results: No significant association between the allelic, dominant, and recessive models of TLR-1 rs5743610, TLR-2 rs5743708, TLR-4 rs4986790 and rs4986791, and TLR-6 rs5743810 polymorphisms and RA risk was observed (p > 0.05). However, significant associations were detected between the allelic, dominant, and recessive models of TLR-1 rs5743618 and RA risk (allelic: OR [95% CI] = 2.21 [1.73-2.81], p < 0.0001; dominant: OR [95% CI] = 2.33 [1.75-3.09], p < 0.0001; recessive models: OR [95% CI] = 3.70 [1.85-7.41], p = 0.0002). In addition, the TLR6 rs5743810 was found to be associated with the rheumatoid factor (RF)- and anticyclic citrullinated peptide (anti-CCP)- antibody in RA group (RF: OR [95% CI] = 2.29 [1.42-3.69], p = 0.0007; anti-CCP: OR [95% CI] = 2.33 [1.39-3.89], p = 0.001). Conclusions: The allelic, dominant, and recessive models of TLR1 rs5743618 might be associated with RA susceptibility. Also, the TLR6 rs5743810 might be associated with RF and anti-CCP antibody of RA in Chinese Han population.
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Affiliation(s)
- Yuqin Peng
- Department of Orthopaedics, Changshu Hospital Affiliated to Soochow University, Changshu No.1 People's Hospital, Changshu, China
| | - Bingqian Chen
- Department of Orthopaedics, Changshu Hospital Affiliated to Soochow University, Changshu No.1 People's Hospital, Changshu, China
| | - Xiaowen Sheng
- Department of Orthopaedics, Changshu Hospital Affiliated to Soochow University, Changshu No.1 People's Hospital, Changshu, China
| | - Yufeng Qian
- Department of Orthopaedics, Changshu Hospital Affiliated to Soochow University, Changshu No.1 People's Hospital, Changshu, China
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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.
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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.
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Farag Y, Salah S, Tawfik H, Hamed M, Marzouk H. Toll-like receptor-4 gene variations in Egyptian children with familial Mediterranean fever. EGYPTIAN RHEUMATOLOGY AND REHABILITATION 2021. [DOI: 10.1186/s43166-020-00053-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Familial Mediterranean fever (FMF) is an autosomal recessive disorder affecting people in the region of the Mediterranean Sea. It is usually associated with mutation in Mediterranean fever (MEFV) gene that encodes the pyrin protein, which affects the innate inflammatory response. Toll-like receptors (TLR) are a family of pattern recognition receptors that recognize pathogenic microbes and activate antimicrobial defense mechanisms. Toll-like receptor 4 (TLR-4) is concerned with recognition of gram-negative organisms. There is growing clinical evidence suggesting a role for expression of TLRs in the immune pathogenesis of FMF. Thus, the aim of the current study was to evaluate the presence of TLR-4 (p.Asp299Gly) and TLR-4 (p.Thr399Ile) gene variants in association with Egyptian children having FMF, furthermore, its effect on disease course and severity.
Results
Seventy Egyptian children diagnosed as having FMF, together with 50 age and gender-matched controls were enrolled in the study. The TLR-4 (p.Asp299Gly) and (Thr399Ile) gene variants were determined by PCR-RFLP analysis for all studied patients and controls. TLR-4 p.Asp299Gly gene variant was detected in 1 (1.4%) of the patients and p.Thr399Ile gene variant was detected in 2 (2%). None of the controls had any of the two tested gene variants. All found variations were heterozygous. We could not find a statistically significant association with disease severity in cases with or without TLR-4 gene variants (P = 0.568). Patients with M694V gene mutation showed a higher disease severity (P = 0.035).
Conclusion
TLR-4 (p.Asp299Gly) and (p.Thr399Ile) gene variants were not found to have a link with the occurrence, the clinical picture of FMF, its severity, and response to colchicine treatment in Egyptian children. M694V gene mutation seems to be associated with higher disease severity. Further larger studies are needed to verify these results.
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Yan S, Chen H, Wang Z, Zhao L. Association of two polymorphisms Asp299Gly and Thr399Ile in Toll-like receptor 4 with rheumatoid arthritis: A meta-analysis. Int J Rheum Dis 2020; 23:1117-1125. [PMID: 32558389 DOI: 10.1111/1756-185x.13890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 05/04/2020] [Accepted: 05/27/2020] [Indexed: 11/28/2022]
Abstract
Our meta-analysis aims to evaluate the association of Asp299Gly and Thr399Ile with rheumatoid arthritis (RA) susceptibility and severity. By manually searching 3 electronic databases (PubMed, Embase and Web of Science), relevant articles were collected. After checking eligibility for every study, this meta-analysis on eligible studies was performed under 5 genetic models: (1) allelic contrast; (2) heterozygous model; (3) homozygous model; (4) dominant model; (5) recessive model. In Spanish populations, a significantly decreased RA risk was identified in allelic comparison (odds ratio [OR] = 0.73, 95% CI 0.55 ~ 0.96) and dominant model (OR = 0.74, 95% CI 0.56 ~ 0.99) of Asp299Gly polymorphism. A trend of reduced risk was also observed under the heterozygous model (OR = 0.77, 95% CI 0.58 ~ 1.03). As for Thr399Ile, it might also have a protective effect on Spanish populations in allelic comparison (OR = 0.71, 95% CI 0.44 ~ 1.15). In contrast, for both Asp299Gly and Thr399Ile, a higher risk of RA was detected in Chinese Han populations. The frequency of both Asp299Gly and Thr399Ile increased in rheumatoid factor (RF)-positive subjects in Chinese patients (Asp299Gly, RF+:RF- = 0.165:0.145; Thr399Ile, RF+:RF- = 0.170:0.161) and decreased in Spanish patients (Asp299Gly, RF+:RF- = 0.060:0.073; Thr399Ile, RF+:RF- = 0.046:0.056), but not to a statistically significant extent. Our meta-analysis suggested that both Asp299Gly and Thr399Ile might have a protective effect on Spanish populations, but the 2 polymorphisms could act as a susceptible factor in Chinese Han populations. To confirm our results, further investigation concerning the functional impacts of Asp299Gly and Thr399Ile are still needed.
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Affiliation(s)
- Shunchao Yan
- Clinical Medical College of Henan University, Kaifeng, China
| | - Haobo Chen
- Basic Medical College of Henan University, Kaifeng, China
| | - Zixian Wang
- First Affiliated Hospital of Henan University, Kaifeng, China
| | - Linshan Zhao
- Clinical Medical College of Henan University, Kaifeng, China
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5
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Evaluation of Toll-like-receptor gene family variants as prognostic biomarkers in rheumatoid arthritis. Immunol Lett 2017; 187:35-40. [DOI: 10.1016/j.imlet.2017.04.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 04/06/2017] [Accepted: 04/18/2017] [Indexed: 02/06/2023]
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Wang Y, Chen L, Li F, Bao M, Zeng J, Xiang J, Luo H, Li J, Tang L. TLR4 rs41426344 increases susceptibility of rheumatoid arthritis (RA) and juvenile idiopathic arthritis (JIA) in a central south Chinese Han population. Pediatr Rheumatol Online J 2017; 15:12. [PMID: 28222760 PMCID: PMC5320652 DOI: 10.1186/s12969-017-0137-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 01/19/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The aim of the study was to determine whether polymorphisms in toll-like receptor 4 (TLR4) confer susceptibility to rheumatoid arthritis (RA) and juvenile idiopathic arthritis (JIA) in a central south Chinese Han population. METHODS Genotyping for six well studied polymorphisms (rs4986790, rs4986791, rs10759932, rs41426344, rs11536889 and rs7873784) in TLR4 gene were conducted in 1074 unrelated patients with RA and 1692 healthy control subjects, as well as in 217 unrelated patients with JIA and 378 healthy control subjects using direct sequencing technique. Comparisons between cases and controls in alleles, genotypes and haplotypes were carried out using Fisher's exact test. RESULTS Significant genetic associations were detected between the 3'UTR rs41426344C and RA (p < 0.001, p adj < 0.001, OR = 2.24) and JIA (p < 0.001, p adj < 0.001, OR = 2.05). In addition, rs4986790G was found to be significantly associated with the susceptibility for RA (p = 0.005, p adj = 0.03, OR = 3.43), but not for JIA (p = 0.06, p adj = 0.36, OR = 2.65). Furthermore, significant increasing in the distributions of haplotypes H4 and H10 in RA (H4: p = 0.001, OR = 1.13; H10: p = 0.001, OR = 1.15) and JIA (H4: p = 0.04, OR = 2.06; H10: p = 0.02, OR = 2.47) were also found. Moreover, the frequency of rs41426344C significantly increased in RF-positive and anti-CCP positive subjects both in RA (RF+: p <0.0001, OR = 2.33; anti-CCP+: p =0.008, OR = 2.79) and JIA (RF+: p =0.02, OR = 2.91; anti-CCP+: p = 0.02, OR = 2.78). CONCLUSIONS Our study suggested that rs41426344 and rs4986790 of TLR4 might contribute to RA, and rs41426344 might contribute to JIA pathogenesis in central south Chinese Han population.
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Affiliation(s)
- Yan Wang
- 0000 0004 1765 8757grid.464229.fDepartment of Human Anatomy, Histology and Embryology, Institute of Neuroscience, Changsha Medical University, No. 1501 Lei Feng Road,, Wangcheng District, Changsha City, Hunan Province 410219 People’s Republic of China ,0000 0004 1765 8757grid.464229.fSchool of Basic Medical Science, Changsha Medical University, Changsha, People’s Republic of China ,0000 0004 1765 8757grid.464229.fExperiment center for Function, Changsha Medical University, Changsha, People’s Republic of China
| | - Lianghui Chen
- 0000 0004 1765 8757grid.464229.fDepartment of Human Anatomy, Histology and Embryology, Institute of Neuroscience, Changsha Medical University, No. 1501 Lei Feng Road,, Wangcheng District, Changsha City, Hunan Province 410219 People’s Republic of China ,0000 0004 1765 8757grid.464229.fSchool of Basic Medical Science, Changsha Medical University, Changsha, People’s Republic of China ,0000 0004 1765 8757grid.464229.fExperiment center for Function, Changsha Medical University, Changsha, People’s Republic of China
| | - Fang Li
- 0000 0004 1765 8757grid.464229.fDepartment of Human Anatomy, Histology and Embryology, Institute of Neuroscience, Changsha Medical University, No. 1501 Lei Feng Road,, Wangcheng District, Changsha City, Hunan Province 410219 People’s Republic of China ,0000 0004 1765 8757grid.464229.fSchool of Basic Medical Science, Changsha Medical University, Changsha, People’s Republic of China
| | - Meihua Bao
- 0000 0004 1765 8757grid.464229.fDepartment of Human Anatomy, Histology and Embryology, Institute of Neuroscience, Changsha Medical University, No. 1501 Lei Feng Road,, Wangcheng District, Changsha City, Hunan Province 410219 People’s Republic of China ,0000 0004 1765 8757grid.464229.fSchool of Basic Medical Science, Changsha Medical University, Changsha, People’s Republic of China
| | - Jie Zeng
- 0000 0004 1765 8757grid.464229.fDepartment of Human Anatomy, Histology and Embryology, Institute of Neuroscience, Changsha Medical University, No. 1501 Lei Feng Road,, Wangcheng District, Changsha City, Hunan Province 410219 People’s Republic of China ,0000 0004 1765 8757grid.464229.fSchool of Basic Medical Science, Changsha Medical University, Changsha, People’s Republic of China
| | - Ju Xiang
- 0000 0004 1765 8757grid.464229.fDepartment of Human Anatomy, Histology and Embryology, Institute of Neuroscience, Changsha Medical University, No. 1501 Lei Feng Road,, Wangcheng District, Changsha City, Hunan Province 410219 People’s Republic of China ,0000 0004 1765 8757grid.464229.fSchool of Basic Medical Science, Changsha Medical University, Changsha, People’s Republic of China
| | - Huaiqing Luo
- 0000 0004 1765 8757grid.464229.fDepartment of Human Anatomy, Histology and Embryology, Institute of Neuroscience, Changsha Medical University, No. 1501 Lei Feng Road,, Wangcheng District, Changsha City, Hunan Province 410219 People’s Republic of China ,0000 0004 1765 8757grid.464229.fSchool of Basic Medical Science, Changsha Medical University, Changsha, People’s Republic of China ,0000 0004 1765 8757grid.464229.fExperiment center for Function, Changsha Medical University, Changsha, People’s Republic of China
| | - Jianming Li
- 0000 0004 1765 8757grid.464229.fDepartment of Human Anatomy, Histology and Embryology, Institute of Neuroscience, Changsha Medical University, No. 1501 Lei Feng Road,, Wangcheng District, Changsha City, Hunan Province 410219 People’s Republic of China ,0000 0001 0379 7164grid.216417.7Department of Neurology, Xiang-ya Hospital, Central South University, Changsha City, Hunan Province China
| | - Liang Tang
- Department of Human Anatomy, Histology and Embryology, Institute of Neuroscience, Changsha Medical University, No. 1501 Lei Feng Road,, Wangcheng District, Changsha City, Hunan Province, 410219, People's Republic of China. .,School of Basic Medical Science, Changsha Medical University, Changsha, People's Republic of China.
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7
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Torices S, Julia A, Muñoz P, Varela I, Balsa A, Marsal S, Fernández-Nebro A, Blanco F, López-Hoyos M, Martinez-Taboada V, Fernández-Luna JL. A functional variant of TLR10 modifies the activity of NFkB and may help predict a worse prognosis in patients with rheumatoid arthritis. Arthritis Res Ther 2016; 18:221. [PMID: 27716427 PMCID: PMC5050569 DOI: 10.1186/s13075-016-1113-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 09/06/2016] [Indexed: 02/06/2023] Open
Abstract
Background Toll-like receptor (TLR) family members are key players in inflammation. TLR10 has been poorly studied in chronic inflammatory disorders, and its clinical relevance in rheumatoid arthritis (RA) is as yet unknown. We aimed at identifying TLR10 variants within all coding regions of the gene in patients with RA as well as studying their functional and clinical significance. Methods TLR10 gene variants were studied by performing sequencing of 66 patients with RA and 30 control subjects. A selected variant, I473T, was then analyzed in 1654 patients and 1702 healthy control subjects. The capacity of this TLR10 variant to modify the transcriptional activity of nuclear factor kappa-light-chain-enhancer of activated B cells (NFkB) was determined by using a luciferase reporter assay and analyzing the expression of NFkB target genes by quantitative polymerase chain reaction. Differences between groups were analyzed by using the Mann-Whitney U test and the unpaired two-tailed Student’s t test. Results We detected ten missense variants in the TLR10 gene and focused on the I473T substitution based on allele frequencies and the predicted functional impact. I473T variant is not associated with susceptibility to RA, but it significantly correlates with erosive disease in patients seropositive for antibodies to citrullinated protein antigens (p = 0.017 in the total cohort and p = 0.0049 in female patients) and with a lower response to infliximab treatment as measured by the change in Disease Activity Score in 28 joints (p = 0.012) and by the European League Against Rheumatism criteria (p = 0.049). Functional studies showed that TLR10 reduced activation of the NFkB inflammatory pathway in hematopoietic cells, whereas the I473T variant lacked this inhibitory capacity. Consistently, after exposure to infliximab, cells expressing the I437T variant showed higher NFkB activity than cells carrying wild-type TLR10. Conclusions A TLR10 allelic variant, I473T, has impaired NFkB inhibitory activity and is highly associated with disease severity and low response to infliximab in patients with RA.
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Affiliation(s)
- Silvia Torices
- Servicio de Reumatología, Hospital Universitario Marques de Valdecilla-Instituto de Investigación Valdecilla (IDIVAL), Avenida Valdecilla s/n, 39008, Santander, Spain.,Unidad de Genética, Hospital Universitario Marques de Valdecilla-Instituto de Investigación Valdecilla (IDIVAL), Avenida Valdecilla s/n, 39008, Santander, Spain
| | - Antonio Julia
- Rheumatology Research Group, Vall d'Hebron Research Institute, 08035, Barcelona, Spain
| | - Pedro Muñoz
- Gerencia Atención Primaria, Servicio Cántabro de Salud, 39011, Santander, Spain
| | - Ignacio Varela
- Instituto de Biomedicina y Biotecnología de Cantabria, Universidad de Cantabria-CSIC, 39011, Santander, Spain
| | - Alejandro Balsa
- Servicio de Reumatología, Hospital Universitario La Paz, 28046, Madrid, Spain
| | - Sara Marsal
- Rheumatology Research Group, Vall d'Hebron Research Institute, 08035, Barcelona, Spain
| | - Antonio Fernández-Nebro
- Unidad de Reumatología, Instituto de Investigación Biomédica de Málaga, Hospital Universitario de Málaga, Universidad de Málaga, 29010, Málaga, Spain
| | - Francisco Blanco
- Departamento de Reumatología, Hospital Universitario A Coruña, 15006, A Coruña, Spain
| | - Marcos López-Hoyos
- Sección de Inmunología, Hospital Universitario Marques de Valdecilla-Instituto de Investigación Valdecilla (IDIVAL), Avenida Valdecilla s/n, 39008, Santander, Spain
| | - Víctor Martinez-Taboada
- Servicio de Reumatología, Hospital Universitario Marques de Valdecilla-Instituto de Investigación Valdecilla (IDIVAL), Avenida Valdecilla s/n, 39008, Santander, Spain.,Facultad de Medicina, Universidad de Cantabria, 39011, Santander, Spain
| | - Jose L Fernández-Luna
- Unidad de Genética, Hospital Universitario Marques de Valdecilla-Instituto de Investigación Valdecilla (IDIVAL), Avenida Valdecilla s/n, 39008, Santander, Spain.
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Guo XH, Shao L, Li J, Mao YJ, Zhang LL, Song Q. Association of TLR-4 regulatory variants (rs41426344 and rs7873784) with rheumatoid arthritis in a Chinese population. EUR J INFLAMM 2016. [DOI: 10.1177/1721727x16660559] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Toll-like receptors (TLRs) play a key role in both innate and adaptive immunity. The role of TLR-4 in various autoimmune disorders has been well documented. Variations in the TLR-4 gene have been linked with susceptibility to rheumatoid arthritis (RA). In the present report, we conducted a hospital-based case-control study to investigate whether common polymorphisms in the TLR-4 gene are associated with susceptibility/resistance to development of RA in a Chinese population. A total of six single nucleotide polymorphisms (Asp299Gly, Thr399Ile, rs10759932, rs41426344, rs11536889, and rs7873784) were genotyped by PCR-RFLP in 250 RA patients and 248 healthy controls. Distribution of genotypes and alleles in RA and controls were compared by Fisher’s exact test. The prevalence of minor allele, heterozygous and homozygous mutants for rs41426344 polymorphism were more frequent in RA patients compared to healthy controls (C: P <0.0001, OR = 5.51 [3.37–8.99]; GC: P <0.0001, OR = 7.38 [4.10–13.29]; CC: P = 0.01, OR = 4.73 [1.28–17.47]). Similarly, the frequencies of CC genotype and C allele of rs7873784 polymorphism were significantly higher in RA than healthy controls ([GC: P = 0.008, OR = 1.77 [1.16–2.70]; C: P = 0.01, OR = 1.61 (1.11–2.34]). However, genotypes and alleles distribution of rs10759932 and rs11536889 were comparable in both clinical categories. Similar to earlier observations, all participants were wild type for TLR-4 codon polymorphisms (Asp299Gly and Thr399Ile). In conclusion, TLR-4 (rs41426344 and rs7873784) variants are associated with susceptibility to development of RA in a Chinese population.
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Affiliation(s)
- Xiang-hua Guo
- Department of Rheumatology and Immunology, The Affiliated Hospital of Jining Medical College, Shandong Province 272000, PR China
| | - Li Shao
- Department of Rheumatology and Immunology, The Affiliated Hospital of Jining Medical College, Shandong Province 272000, PR China
| | - Jian Li
- Department of Rheumatology and Immunology, The Affiliated Hospital of Jining Medical College, Shandong Province 272000, PR China
| | - Yu-jing Mao
- Department of Rheumatology and Immunology, The Affiliated Hospital of Jining Medical College, Shandong Province 272000, PR China
| | - Li-li Zhang
- Department of Rheumatology and Immunology, The Affiliated Hospital of Jining Medical College, Shandong Province 272000, PR China
| | - Qin Song
- Department of Rheumatology and Immunology, The Affiliated Hospital of Jining Medical College, Shandong Province 272000, PR China
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Davis MLR, LeVan TD, Yu F, Sayles H, Sokolove J, Robinson W, Michaud K, Thiele GM, Mikuls TR. Associations of toll-like receptor (TLR)-4 single nucleotide polymorphisms and rheumatoid arthritis disease progression: an observational cohort study. Int Immunopharmacol 2015; 24:346-352. [PMID: 25573402 DOI: 10.1016/j.intimp.2014.12.030] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 12/15/2014] [Accepted: 12/22/2014] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To examine the associations of toll-like receptor (TLR)-4 single nucleotide polymorphisms (SNPs) with disease progression in rheumatoid arthritis (RA). METHODS A total of 1188 RA patients were genotyped for TLR4 SNPs (rs1927911, rs11536878, and rs4986790). Measures of disease activity were examined, including Disease Activity Score-28 (DAS28), Multidimensional Health Assessment Questionnaire (MD-HAQ), Clinical Disease Activity Index (CDAI), and Simplified Disease Activity Index (SDAI). Genetic associations with these longitudinal measures were examined using generalized estimating equations in both univariate and multivariate analyses. Analyses were then stratified by antigen specific anti-citrullinated peptide antibody (ACPA) status including antibody to citrullinated fibrinogen and citrullinated histone H2B. RESULTS Disease activity measures progressed less over time in the homozygous minor allele group of rs1927911 including DAS28 (p<0.001), CDAI (p=0.008), and MD-HAQ (p=0.015) in univariate analysis and DAS28, CDAI and SDAI in multivariate analysis. Disease activity progression among those homozygous for the minor allele tended to be lower in the groups with positive ACPA though major differences by autoantibody status were not identified. There were no associations of TLR4 rs11536878 and rs4986790 SNPs with RA disease activity progression. CONCLUSIONS In this population, TLR4 rs1927911 genotypes are associated with disease activity independent of other covariates.
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Affiliation(s)
- Marshall L R Davis
- University of Nebraska Medical Center, 986270 Nebraska Medical Center, Omaha, NE 68198-6270, USA.
| | - Tricia D LeVan
- University of Nebraska Medical Center, 986270 Nebraska Medical Center, Omaha, NE 68198-6270, USA; Veterans Affairs (VA) Nebraska-Western Iowa Health Care System, 4101 Woolworth Ave, Omaha, NE 68105, USA.
| | - Fang Yu
- University of Nebraska Medical Center, 986270 Nebraska Medical Center, Omaha, NE 68198-6270, USA.
| | - Harlan Sayles
- University of Nebraska Medical Center, 986270 Nebraska Medical Center, Omaha, NE 68198-6270, USA.
| | - Jeremy Sokolove
- Stanford University School of Medicine CCSR, 269 Campus Drive, Stanford, CA 94305, USA.
| | - William Robinson
- Stanford University School of Medicine CCSR, 269 Campus Drive, Stanford, CA 94305, USA.
| | - Kaleb Michaud
- University of Nebraska Medical Center, 986270 Nebraska Medical Center, Omaha, NE 68198-6270, USA.
| | - Geoffrey M Thiele
- University of Nebraska Medical Center, 986270 Nebraska Medical Center, Omaha, NE 68198-6270, USA; Veterans Affairs (VA) Nebraska-Western Iowa Health Care System, 4101 Woolworth Ave, Omaha, NE 68105, USA.
| | - Ted R Mikuls
- University of Nebraska Medical Center, 986270 Nebraska Medical Center, Omaha, NE 68198-6270, USA; Veterans Affairs (VA) Nebraska-Western Iowa Health Care System, 4101 Woolworth Ave, Omaha, NE 68105, USA.
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Association of Toll like receptor Asp299Gly with rheumatoid arthritis risk: a systematic review of case-control studies and meta-analysis. Pathol Res Pract 2014; 211:219-25. [PMID: 25499175 DOI: 10.1016/j.prp.2014.11.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 09/25/2014] [Accepted: 11/04/2014] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Rheumatoid arthritis (RA) is thought to be triggered by various genetic and environmental factors. Few human epidemiologic studies demonstrated that single nucleotide polymorphisms (SNPs) in Toll-like receptor (TLR) genes are associated with RA. We aimed to evaluate the effects of TLR polymorphisms on the risk of RA pathogenesis by using a meta-analysis approach. METHODS Following the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines, a systematic search and meta-analysis of the literature was conducted. We screened the medical literature based on keywords search in MEDLINE and EMBASE 'Toll-like receptor', 'polymorphism', and rheumatoid arthritis. Meta-analyses were performed under the random-effects model by using: (1) recessive, (2) homozygous, (3) dominant, (4) codominant and allele contrast models. RESULTS A total of 3086 cases and 3756 controls in nine studies were included in the meta-analysis. Association between TLR4 Asp299Gly and RA risk was marginally significant [OR = 0.856 (95% CI, 0.716-1.022); P = 0.086] in the homozygous model. AA and GG homozygote genotypes tended to be significant protective factors against RA risk. CONCLUSION Our overall analyses indicated that TLR4 Asp299Gly polymorphism might contribute to RA pathogenesis.
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Taha HA, Sheir RE, Shafy SSA, Mohamed LM. Genotypic analysis of Asp299Gly and Thr399Ile polymorphisms of TLR4 in Egyptian patients with rheumatoid arthritis and systemic lupus erythematosus. THE EGYPTIAN JOURNAL OF INTERNAL MEDICINE 2014. [DOI: 10.4103/1110-7782.132884] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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Toll-like receptor polymorphisms and rheumatoid arthritis: a systematic review. Rheumatol Int 2013; 34:111-6. [PMID: 23325096 DOI: 10.1007/s00296-013-2666-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2011] [Accepted: 01/04/2013] [Indexed: 10/27/2022]
Abstract
The aim of this study was to determine whether toll-like receptor (TLR) polymorphisms confer susceptibility to rheumatoid arthritis (RA) and influence the clinical characteristics of RA. The authors conducted a systematic review on associations between TLR polymorphisms and RA susceptibility and clinical findings. Meta-analysis was performed if at least three comparisons of an issue were available. A total of 14 studies were included in this systematic review, which included European and Asian studies. Meta-analysis of five European studies showed no association between the TLR4 Asp299Gly (rs4986790) polymorphism and RA (OR for the minor allele = 0.907, 95% CI = 0.755-1.088, p = 0.291). Furthermore, none of these studies found any association between the polymorphism and clinical characteristics. A significant difference between TLR9 rs187084 allele frequencies in RA patients and controls was found in one Turkish study (p = 0.003), and a moderate association between RF positivity and TLR8 rs5741883 was found in an European study (p = 0.001). The numbers of guanine-thymine [(GT)n] repeats in intron II of the TLR2 gene were found a significantly higher S-allele frequency in Korean patients with RA than in controls (30.3 vs. 23.0 %, p = 0.03). This meta-analysis shows lack of an association between the TLR4 Asp299Gly polymorphism and RA. However, our finding suggests the possibility that TLR polymorphisms are associated with the development and clinical characteristics of RA. Because of a paucity of data of the TLR polymorphisms, case-control studies are required to determine whether TLR2, 4, 8, 9 polymorphisms contribute to RA susceptibility or severity in more than 2,000 patients and controls.
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Association of TLR4 gene non-missense single nucleotide polymorphisms with rheumatoid arthritis in Chinese Han population. Rheumatol Int 2012; 33:1283-8. [DOI: 10.1007/s00296-012-2536-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Accepted: 10/21/2012] [Indexed: 10/27/2022]
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Xie Q, Wang SC, Bian G, Zhan FL, Xie JK, Li J. Association of MIF-173G/C and MBL2 codon 54 gene polymorphisms with rheumatoid arthritis: a meta-analysis. Hum Immunol 2012; 73:966-71. [PMID: 22820623 DOI: 10.1016/j.humimm.2012.07.043] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Revised: 05/24/2012] [Accepted: 07/11/2012] [Indexed: 11/30/2022]
Abstract
The aim of this study was to evaluate the association between macrophage migration inhibitory factor (MIF) -173G/C (rs755622), mannose-binding lectin (MBL2) exon 1 codon 54 (rs1800450) gene polymorphisms and rheumatoid arthritis (RA) susceptibility in ethnically different populations. A meta-analysis was conducted (allelic contrast, the additive model, the dominant model and the recessive model) on the MIF-173G/C polymorphism across five studies (four European and one Asian studies), and the MBL2 codon 54 polymorphism with five studies (four Asian and one European studies), respectively. Meta-analysis indicated an association between the MIF-173G/C in all study subjects in allelic contrast (OR=1.19, 95%CI: 1.05-1.35, P=0.001), the additive model (OR=1.68, 95CI: 1.13-2.49, P=0.001), the dominant model (OR=1.17, 95CI: 1.01-1.35, P=0.003), the recessive model (OR=1.63, 95CI: 1.10-2.42, P=0.001). While stratified by ethnicity with European populations, an association was found in allelic contrast (OR=1.20, 95CI: 1.04-1.38, P=0.002), the additive model (OR=1.85, 95CI: 1.19-2.88, P=0.001), the dominant model (OR=1.20, 95CI: 1.02-1.41, P=0.003). With respect to MBL2 codon 54 polymorphism and RA, no association was found in all study subjects in all comparisons, but there was an association while stratified by ethnicity with Asian populations in the dominant model (OR=1.50, 95CI: 1.01-2.23, P=0.007). In conclusion, the present study suggests that the MIF-173G/C polymorphism is associated with RA susceptibility, but the MBL2 codon 54 polymorphism is not associated with RA.
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Affiliation(s)
- Qiang Xie
- School of Pharmacy, Anhui Medical University, Hefei, Anhui 230032, PR China
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Arabski M, Fudala R, Koza A, Wasik S, Futoma-Koloch B, Bugla-Ploskonska G, Kaca W. The presence of anti-LPS antibodies and human serum activity against Proteus mirabilis S/R forms in correlation with TLR4 (Thr399Ile) gene polymorphism in rheumatoid arthritis. Clin Biochem 2012; 45:1374-82. [PMID: 22749779 DOI: 10.1016/j.clinbiochem.2012.06.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Revised: 06/14/2012] [Accepted: 06/16/2012] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Proteus mirabilis strains are human pathogens responsible for urinary tract infections, which may also be involved in rheumatoid arthritis (RA). DESIGN AND METHODS We determined whether the binding site of anti-LPS antibodies on the O-polysaccharide part of P. mirabilis LPS correlates with the level of TLR4 (Thr399Ile) gene polymorphism in the sera of RA patients. We investigated the deposition of C3d and C5b complement components on the P. mirabilis LPS. The ELISA method used in this study was optimized with LAL test and laser interferometry. RESULTS Depending on LPS P. mirabilis used in these studies, the amount of antibodies in RA patients sera varied. We did not observe a correlation between anti-LPS antibodies binding and the level of TLR4 (Thr399Ile) gene polymorphism. We found that the lower complement components deposition by O49 in contrast to O9 LPS correlates with its reduced sensitivities to human complement-mediated killing. CONCLUSION The immunological response against P. mirabilis LPS might play a role in rheumatoid arthritis.
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Affiliation(s)
- Michal Arabski
- Institute of Biology, Department of Microbiology, Jan Kochanowski University, 25-406, Kielce, Poland.
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Lack of association of TLR4 polymorphisms with susceptibility to rheumatoid arthritis and ankylosing spondylitis: a meta-analysis. Joint Bone Spine 2012; 79:566-9. [PMID: 22717291 DOI: 10.1016/j.jbspin.2012.02.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2011] [Accepted: 02/10/2012] [Indexed: 12/31/2022]
Abstract
OBJECTIVE The aim of the study was to determine whether polymorphisms of toll-like receptor 4 (TLR4) confer susceptibility to rheumatoid arthritis (RA) and ankylosing spondylitis (AS). METHODS A meta-analysis was conducted on the association between the D299G/T399I polymorphisms and RA/AS (when available) using (1) the allelic contrast, (2) the recessive, (3) the dominant, and (4) the additive models. RESULTS A total of eleven relevant studies met the inclusion criteria were identified, including RA: D299G (six studies), T399I (three studies); AS: D299G (five studies), T399I (four studies). Meta-analysis was performed with fixed/random effect models. Overall, no significant RA/AS risk was found in all genetic models when all studies were pooled into the meta-analysis (P>0.05). CONCLUSIONS The present study might suggest that TLR4 D299G/T399I polymorphisms are not associated with RA/AS susceptibility.
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Ioana M, Ferwerda B, Farjadian S, Ioana L, Ghaderi A, Oosting M, Joosten LAB, van der Meer JWM, Romeo G, Luiselli D, Dediu D, Netea MG. High variability of TLR4 gene in different ethnic groups in Iran. Innate Immun 2011; 18:492-502. [DOI: 10.1177/1753425911423043] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Infectious diseases exert a constant evolutionary pressure on the innate immunity genes. TLR4, an important member of the TLR family, specifically recognizes conserved structures of various infectious pathogens. Two functional TLR4 polymorphisms, Asp299Gly and Thr399Ile, modulate innate host defense against infections, and their prevalence between various populations has been proposed to be influenced by local infectious pressures. If this assumption is true, strong local infectious pressures would lead to a homogeneous pattern of these ancient TLR4 polymorphisms in geographically-close populations, while a weak selection or genetic drift may result in a diverse pattern. We evaluated TLR4 polymorphisms in 15 ethnic groups in Iran, to assess whether infections exerted selective pressures on different haplotypes containing these variants. The Iranian subpopulations displayed a heterogeneous pattern of TLR4 polymorphisms, comprising various percentages of Asp299Gly and Thr399Ile, alone or in combination. The Iranian sample, as a whole, showed an intermediate mixed pattern when compared with commonly-found patterns in Africa, Europe, Eastern Asia and the Americas. These findings suggest a weak, or absent, selection pressure on TLR4 polymorphisms in the Middle-East that does not support the assumption of an important role of these polymorphisms in the host defense against local pathogens.
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Affiliation(s)
- Mihai Ioana
- Radboud University Nijmegen Medical Centre, and Nijmegen Institute for Infection, Inflammation and Immunity (N4i), Department of Medicine, Nijmegen, The Netherlands
- Department of Molecular and Cellular Biology, University of Medicine and Pharmacy of Craiova, Romania
- University of Medicine and Pharmacy ‘Carol Davila’ Bucharest, Romania
| | - Bart Ferwerda
- Radboud University Nijmegen Medical Centre, and Nijmegen Institute for Infection, Inflammation and Immunity (N4i), Department of Medicine, Nijmegen, The Netherlands
- Department of Genetics, University of Pennsylvania, Philadelphia, PA, USA
| | - Shirin Farjadian
- Department of Immunology, Shiraz University of Medical Sciences, Shiraz, Iran
- Allergy Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Luiza Ioana
- Radboud University Nijmegen Medical Centre, and Nijmegen Institute for Infection, Inflammation and Immunity (N4i), Department of Medicine, Nijmegen, The Netherlands
| | - Abbas Ghaderi
- Shiraz Institute for Cancer Research, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Marije Oosting
- Radboud University Nijmegen Medical Centre, and Nijmegen Institute for Infection, Inflammation and Immunity (N4i), Department of Medicine, Nijmegen, The Netherlands
| | - Leo AB Joosten
- Radboud University Nijmegen Medical Centre, and Nijmegen Institute for Infection, Inflammation and Immunity (N4i), Department of Medicine, Nijmegen, The Netherlands
| | - Jos WM van der Meer
- Radboud University Nijmegen Medical Centre, and Nijmegen Institute for Infection, Inflammation and Immunity (N4i), Department of Medicine, Nijmegen, The Netherlands
| | - Giovanni Romeo
- Unità di Genetica Medica, Policlinico Universitario S. Orsola-Malpighi, Bologna, Italy
| | - Donata Luiselli
- Dipartimento di Biologia Evoluzionistica Sperimentale, Fisiche e Naturali, Università di Bologna, Italy
| | - Dan Dediu
- Max Planck Institute for Psycholinguistics, Nijmegen, The Netherlands
| | - Mihai G Netea
- Radboud University Nijmegen Medical Centre, and Nijmegen Institute for Infection, Inflammation and Immunity (N4i), Department of Medicine, Nijmegen, The Netherlands
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Guo J, Friedman SL. Toll-like receptor 4 signaling in liver injury and hepatic fibrogenesis. FIBROGENESIS & TISSUE REPAIR 2010; 3:21. [PMID: 20964825 PMCID: PMC2984459 DOI: 10.1186/1755-1536-3-21] [Citation(s) in RCA: 220] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2010] [Accepted: 10/21/2010] [Indexed: 12/12/2022]
Abstract
Toll-like receptors (TLRs) are a family of transmembrane pattern recognition receptors (PRR) that play a key role in innate and adaptive immunity by recognizing structural components unique to bacteria, fungi and viruses. TLR4 is the most studied of the TLRs, and its primary exogenous ligand is lipopolysaccharide, a component of Gram-negative bacterial walls. In the absence of exogenous microbes, endogenous ligands including damage-associated molecular pattern molecules from damaged matrix and injured cells can also activate TLR4 signaling. In humans, single nucleotide polymorphisms of the TLR4 gene have an effect on its signal transduction and on associated risks of specific diseases, including cirrhosis. In liver, TLR4 is expressed by all parenchymal and non-parenchymal cell types, and contributes to tissue damage caused by a variety of etiologies. Intact TLR4 signaling was identified in hepatic stellate cells (HSCs), the major fibrogenic cell type in injured liver, and mediates key responses including an inflammatory phenotype, fibrogenesis and anti-apoptotic properties. Further clarification of the function and endogenous ligands of TLR4 signaling in HSCs and other liver cells could uncover novel mechanisms of fibrogenesis and facilitate the development of therapeutic strategies.
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Affiliation(s)
- Jinsheng Guo
- Division of Liver Diseases, Mount Sinai Hospital, Mount Sinai School of Medicine, New York, NY, USA.
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