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Acosta-Colman I, Cabrera-Villalba S, Ayala-Lugo A, Jolly V, Vazquez M, Morel Z, Langjahr P, Duarte M, Zarate R, Acosta ME, Avila-Pedretti G, Julià A, Martinez MT, Marsal S. Association of class II HLA alleles with susceptibility to develop immune-mediated diseases in Paraguayan patients. Int J Immunogenet 2023; 50:12-18. [PMID: 36543746 DOI: 10.1111/iji.12609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 11/06/2022] [Accepted: 11/14/2022] [Indexed: 12/24/2022]
Abstract
Genetic and nongenetic factors are involved in the pathogenesis of immune-mediated inflammatory diseases (IMIDs). The best-known genetic factor for susceptibility to IMIDs is the human leukocyte antigen (HLA). The aim of the present study was to evaluate the association of HLA class II genes with the risk of systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), and systemic sclerosis (SSc) in the Paraguayan population. We included 254 patients with IMIDs (101 SLE, 103 RA, and 50 SSc) and 50 healthy controls. The haplotypes of five genes corresponding to HLA class II genes and their relationship to the IMIDs studied were determined. Note that 84.6% were women, with a mean age of 43.4 ± 14 years. Among the associated HLA alleles, we found the previously identified risk factors in other populations like HLA-DRB1*03:01 and HLA-DRB1*14:02 for RA, as well as new ones not previously identified, such as DPA1*02:01 for SLE and, DB1*02:01 for RA and SSc. In the genetic association analysis, already known associations have been replicated, and unpublished associations have been identified in Paraguayan patients with IMIDs. This is the first genetic association study in Paraguayan patients with IMIDs.
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Affiliation(s)
- Isabel Acosta-Colman
- Departamento de Reumatología, Facultad de Ciencias Médicas, Universidad Nacional de Asunción, San Lorenzo, Paraguay
| | - Sonia Cabrera-Villalba
- Departamento de Reumatología, Facultad de Ciencias Médicas, Universidad Nacional de Asunción, San Lorenzo, Paraguay
| | - Ana Ayala-Lugo
- Instituto de Investigación en Ciencias de la Salud, Laboratorio de Genética Molecular, Universidad Nacional de Asunción, San Lorenzo, Paraguay
| | - Valerie Jolly
- Instituto de Investigación en Ciencias de la Salud, Laboratorio de Genética Molecular, Universidad Nacional de Asunción, San Lorenzo, Paraguay
| | - Marcos Vazquez
- Departamento de Reumatología, Facultad de Ciencias Médicas, Universidad Nacional de Asunción, San Lorenzo, Paraguay
| | - Zoilo Morel
- Departamento de Reumatología, Facultad de Ciencias Médicas, Universidad Nacional de Asunción, San Lorenzo, Paraguay
| | - Patricia Langjahr
- Facultad de Ciencias Químicas, Universidad Nacional de Asunción, San Lorenzo, Paraguay
| | - Margarita Duarte
- Departamento de Reumatología, Facultad de Ciencias Médicas, Universidad Nacional de Asunción, San Lorenzo, Paraguay
| | | | - Maria Eugenia Acosta
- Instituto de Investigación en Ciencias de la Salud, Laboratorio de Genética Molecular, Universidad Nacional de Asunción, San Lorenzo, Paraguay
| | - Gabriela Avila-Pedretti
- Departamento de Reumatología, Facultad de Ciencias Médicas, Universidad Nacional de Asunción, San Lorenzo, Paraguay
| | - Antonio Julià
- Group de Recerca en Reumatologia, Institut de Recerca Vall d'Hebron, Barcelona, Spain
| | | | - Sara Marsal
- Group de Recerca en Reumatologia, Institut de Recerca Vall d'Hebron, Barcelona, Spain
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Albarzinji N, Ismael SA, Albustany D. Association of rheumatoid arthritis and its severity with human leukocytic antigen-DRB1 alleles in Kurdish region in North of Iraq. BMC Rheumatol 2022; 6:4. [PMID: 35016727 PMCID: PMC8753826 DOI: 10.1186/s41927-021-00229-9] [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: 04/17/2021] [Accepted: 07/30/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Rheumatoid arthritis is a complex multifactorial chronic disease, the importance of human leukocytic antigen (HLA) as a major genetic risk factor for rheumatoid arthritis was studied worldwide. The objective of this study is to identify the association of HLA-DRB1 subtypes with rheumatoid arthritis and its severity in Kurdish region. METHODS A case-control study recruited 65 rheumatoid arthritis patients and 100 healthy individuals as control group all over the Kurdistan region/Iraq. Both patient and control groups are genotyped using polymerase chain reaction with sequence specific primer. Anti-CCP antibodies were measured by ELISA test. Rheumatoid factor, C-reactive protein, and disease activity score 28 which measured by DAS-28 values were calculated. The DAS-28 was used to assess the clinical severity of the patients. RESULTS HLA-DRB1-0404 and HLA-DRB1-0405 frequencies showed a strong association with disease susceptibility (P < 0.001). The frequency of HLA-DRB1-0411 and HLA-DRB1-0413 were significantly higher in control group (P < 0.001). The frequency of rheumatoid factor and Anti-CCP were significantly higher among shared epitope-positive patients compared to shared epitope-negative patients (P < 0.001). Regarding the disease activity by DAS-28, rheumatoid arthritis patients didn't show significant difference between the shared epitope-positive and shared epitope-negative patients. CONCLUSIONS HLA-DR0404 and HLA-DR0405 alleles are related to RA, while HLA-DR1-0411 and HLA-DRB1-0413 protect against RA in the Kurdistan region in the North of Iraq.
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Guo S, Jin Y, Zhou J, Zhu Q, Jiang T, Bian Y, Zhang R, Chang C, Xu L, Shen J, Zheng X, Shen Y, Qin Y, Chen J, Tang X, Cheng P, Ding Q, Zhang Y, Liu J, Cheng Q, Guo M, Liu Z, Qiu W, Qian Y, Sun Y, Shen Y, Nie H, Schrodi SJ, He D. MicroRNA Variants and HLA-miRNA Interactions are Novel Rheumatoid Arthritis Susceptibility Factors. Front Genet 2021; 12:747274. [PMID: 34777472 PMCID: PMC8585984 DOI: 10.3389/fgene.2021.747274] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 10/11/2021] [Indexed: 12/25/2022] Open
Abstract
Genome-wide association studies have identified >100 genetic risk factors for rheumatoid arthritis. However, the reported genetic variants could only explain less than 40% heritability of rheumatoid arthritis. The majority of the heritability is still missing and needs to be identified with more studies with different approaches and populations. In order to identify novel function SNPs to explain missing heritability and reveal novel mechanism pathogenesis of rheumatoid arthritis, 4 HLA SNPs (HLA-DRB1, HLA-DRB9, HLA-DQB1, and TNFAIP3) and 225 common SNPs located in miRNA, which might influence the miRNA target binding or pre-miRNA stability, were genotyped in 1,607 rheumatoid arthritis and 1,580 matched normal individuals. We identified 2 novel SNPs as significantly associated with rheumatoid arthritis including rs1414273 (miR-548ac, OR = 0.84, p = 8.26 × 10-4) and rs2620381 (miR-627, OR = 0.77, p = 2.55 × 10-3). We also identified that rs5997893 (miR-3928) showed significant epistasis effect with rs4947332 (HLA-DRB1, OR = 4.23, p = 0.04) and rs2967897 (miR-5695) with rs7752903 (TNFAIP3, OR = 4.43, p = 0.03). In addition, we found that individuals who carried 8 risk alleles showed 15.38 (95%CI: 4.69-50.49, p < 1.0 × 10-6) times more risk of being affected by RA. Finally, we demonstrated that the targets of the significant miRNAs showed enrichment in immune related genes (p = 2.0 × 10-5) and FDA approved drug target genes (p = 0.014). Overall, 6 novel miRNA SNPs including rs1414273 (miR-548ac, p = 8.26 × 10-4), rs2620381 (miR-627, p = 2.55 × 10-3), rs4285314 (miR-3135b, p = 1.10 × 10-13), rs28477407 (miR-4308, p = 3.44 × 10-5), rs5997893 (miR-3928, p = 5.9 × 10-3) and rs45596840 (miR-4482, p = 6.6 × 10-3) were confirmed to be significantly associated with RA in a Chinese population. Our study suggests that miRNAs might be interesting targets to accelerate understanding of the pathogenesis and drug development for rheumatoid arthritis.
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Affiliation(s)
- Shicheng Guo
- Department of Medical Genetics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States
| | - Yehua Jin
- Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jieru Zhou
- Department of Health Management, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Qi Zhu
- Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Ting Jiang
- Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yanqin Bian
- Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Runrun Zhang
- Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Cen Chang
- Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Lingxia Xu
- Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jie Shen
- Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Xinchun Zheng
- Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yi Shen
- Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yingying Qin
- Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jihong Chen
- Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xiaorong Tang
- Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Peng Cheng
- Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Qin Ding
- Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yuanyuan Zhang
- Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jia Liu
- Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Qingqing Cheng
- Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Mengru Guo
- Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Zhaoyi Liu
- Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Weifang Qiu
- Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yi Qian
- Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yang Sun
- Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Yu Shen
- Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
| | - Hong Nie
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Steven J Schrodi
- Department of Medical Genetics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States
| | - Dongyi He
- Department of Rheumatology,Guanghua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Institute of Arthritis Research in Integrative Medicine, Shanghai Academy of Traditional Chinese Medicine, Shanghai, China
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4
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Valadbeigi S, Saghiri R, Ebrahimi-Rad M, Khatami S, Akhbari H. Adenosine Deaminase Activity and HLA-DRB as Diagnostic Markers for Rheumatoid Arthritis. Curr Rheumatol Rev 2019; 15:44-49. [PMID: 29623847 DOI: 10.2174/1573397114666180406101239] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 04/03/2018] [Accepted: 04/03/2018] [Indexed: 12/15/2022]
Abstract
BACKGROUND Rheumatoid Arthritis (RA) is a chronic multi systemic disorder with the unclarified ethiopathology. Although several markers have been presented for recognition of RA, but none of them has been specific. New markers such as HLA typing and activity of Adenosine Deaminase (ADA) isoenzymes could be useful and specific. OBJECTIVE The aim of this study is to evaluate the pattern of ADA isoenzymes activity and HLA typing in both RA patients and healthy cases. METHODS Blood samples were collected from 55 RA patients and 60 healthy subjects, over a period of 6 months. Levels of C-reactive Protein (CRP), Rheumatoid Factor (RF) and ADA (ADA1, ADA2, total ADA) were measured using AVITEX kit and HITACHI Auto Analyzer. In addition, HLA-DRB1*01,*04 and *10 was detected using PCR-SSP. RESULTS ADA activity, particularly ADA2 level, was significantly higher among RA group (Pv <0.05). The concentrations of tADA in patients with RF and CRP positive were significantly higher (Pv <0.05). The allele prevalence of DRB1*01 was significantly higher in RA patients (13.1%) compared with control group (5.5%, respectively) (P <0.05, Bonferroni adjustment P<0.003). Calculated sensitivity and specificity for diagnostic tests in this study are listed as: CRP (75%), RF (80%), ADA (84%) and RF (90%), ADA (83%), CRP (72%), respectively. CONCLUSION Increased tADA level and the frequency of DRB1*10 and *01 caused susceptibility to RA.
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Affiliation(s)
| | - Reza Saghiri
- Department of Biochemistry, Pasteur Institute of Iran, Tehran, Iran
| | | | - Shohreh Khatami
- Department of Biochemistry, Pasteur Institute of Iran, Tehran, Iran
| | - Hadi Akhbari
- Department of Rheumatology, Medical Sciences University of Birjand, Birjand, Iran
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5
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Guio H, Poterico JA, Levano KS, Cornejo‐Olivas M, Mazzetti P, Manassero‐Morales G, Ugarte‐Gil MF, Acevedo‐Vásquez E, Dueñas‐Roque M, Piscoya A, Fujita R, Sanchez C, Casavilca‐Zambrano S, Jaramillo‐Valverde L, Sullcahuaman‐Allende Y, Iglesias‐Pedraz JM, Abarca‐Barriga H. Genetics and genomics in Peru: Clinical and research perspective. Mol Genet Genomic Med 2018; 6:873-886. [PMID: 30584990 PMCID: PMC6305655 DOI: 10.1002/mgg3.533] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 11/13/2018] [Indexed: 12/17/2022] Open
Abstract
Peruvians currently preserve in their DNA the history of 2.5 million years of human evolution and 150,000 years of migration from Africa to Peru or the Americas. The development of Genetics and Genomics in the clinical and academic field is shown in this review.
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Affiliation(s)
- Heinner Guio
- Instituto Nacional de Salud del PerúLimaPerú
- Universidad Científica del SurLimaPerú
| | - Julio A. Poterico
- Instituto Nacional de Salud del PerúLimaPerú
- Servicio de GenéticaInstituto Nacional de Salud del Niño San Borja (INSN‐SB)LimaPeru
| | | | - Mario Cornejo‐Olivas
- Neurogenetics Research Center, Instituto Nacional de Ciencias NeurológicasLimaPerú
| | - Pilar Mazzetti
- Neurogenetics Research Center, Instituto Nacional de Ciencias NeurológicasLimaPerú
- School of MedicineUniversidad Nacional Mayor de San MarcosLimaPerú
| | | | - Manuel F. Ugarte‐Gil
- Universidad Científica del SurLimaPerú
- Rheumatology Department. Hospital Guillermo Almenara Irigoyen. EsSaludLimaPerú
| | - Eduardo Acevedo‐Vásquez
- School of MedicineUniversidad Nacional Mayor de San MarcosLimaPerú
- Clínica San FelipeLimaPerú
| | - Milagros Dueñas‐Roque
- Servicio de GenéticaHospital Nacional Edgardo Rebagliati MartinsLimaPerú
- Sociedad de Genética Médica del PerúLimaPeru
| | - Alejandro Piscoya
- Universidad San Ignacio de LoyolaLimaPerú
- Hospital Guillermo Kaelin de la FuenteLimaPerú
| | - Ricardo Fujita
- Centro de Genética y Biología Molecular, Universidad de San Martín de PorresLimaPerú
| | | | - Sandro Casavilca‐Zambrano
- Banco de Tejidos Tumorales, Instituto Nacional de Enfermedades NeoplásicasBanco de Tejidos TumoralesLimaPerú
- Instituto Nacional de Enfermedades NeoplásicasLimaPerú
| | | | | | - Juan M. Iglesias‐Pedraz
- Universidad Científica del SurLimaPerú
- Laboratorio de Genética Molecular y Bioquímica, Departamento de Investigación, Desarrollo e InnovaciónUniversidad Científica del SurLimaPerú
| | - Hugo Abarca‐Barriga
- Servicio de Genética & EIMInstituto Nacional de Salud del Niño Breña (INSN)LimaPeru
- Facultad de EstomatologíaUniversidad Científica del SurLimaPerú
- Facultad de Medicina HumanaUniversidad Ricardo PalmaLimaPerú
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Frequency of human leukocyte antigens class II-DR alleles (HLA-DRB1) in Argentinian patients with early arthritis. Clin Rheumatol 2018; 38:675-681. [PMID: 30306282 DOI: 10.1007/s10067-018-4319-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 09/07/2018] [Accepted: 09/26/2018] [Indexed: 10/28/2022]
Abstract
Patients with rheumatoid arthritis (RA) or undifferentiated arthritis (UA) in the CONAART database (Argentine Consortium for Early Arthritis) were assessed for genetic risk factors for RA, specifically for HLA-DRB1 alleles and the PTPN22 rs2476601 polymorphism associated with progression to RA. This is a case-control study. Blood samples were obtained to determine HLA-DRB1 genotypes by PCR-SSO Luminex and PTPN22 (rs2476601) polymorphism by allelic discrimination. A control group of individuals from the general Argentinian population were obtained from the national register of cadaveric organ donors. A total of 1859 individuals were included in this analysis: 399 patients from the CONAART database (347 patients with RA at study end and 52 patients with UA at study end, mean follow-up time 25 ± 18 months) and 1460 individuals from the general Argentinian population. Compared with the controls, the HLA-DRB1*04 and DRB1*09 alleles were more commonly detected in patients with RA diagnosis (OR (95% CI) 2.23 (1.74-2.85) and 1.89 (1.26-2.81)) respectively. Both patients with UA and the general population showed higher frequency of DRB1*07, DRB1*11 and DRB1*15 alleles than patients with RA. PTPN22 rs2476601 polymorphism frequency was higher in RA and UA vs the general population; however, this was significantly different only for RA vs control group (OR [95% CI] = 1.81 [1.10-3.02], P = 0.018. HLA-DRB1 typing and PTPN22 allelic discrimination could distinguish between patients with UA, patients with early RA, and the general population in Argentina. This is the first study of HLA-DRB1 alleles and PTPN22 polymorphism associations with progression to early RA in an Argentinian population.
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Begum M, Sattar H, Haq SA, Islam MN, Saha SK, Hassan MM, Saha R, Kabir MS. Study on association of human leukocyte antigen‐
DRB
1 alleles amongst Bangladeshi patients with rheumatoid arthritis. Int J Rheum Dis 2018; 21:1543-1547. [DOI: 10.1111/1756-185x.13291] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Maksuma Begum
- Department of Microbiology Shaheed Monsur Ali Medical College Dhaka Bangladesh
| | - Humayun Sattar
- Department of Microbiology Bangabandhu Sheikh Mujib Medical University Dhaka Bangladesh
| | - Syed A. Haq
- Department of Rheumatology Bangabandhu Sheikh Mujib Medical University Dhaka Bangladesh
| | - Md. Nazrul Islam
- Department of Rheumatology Bangabandhu Sheikh Mujib Medical University Dhaka Bangladesh
| | - Sushanta K. Saha
- Department of Rheumatology Bangabandhu Sheikh Mujib Medical University Dhaka Bangladesh
| | - M. Masudul Hassan
- Department of Rheumatology Bangabandhu Sheikh Mujib Medical University Dhaka Bangladesh
| | - Ritu Saha
- Department of Microbiology BashundharaAd‐din Medical College Dhaka Bangladesh
| | - Md. Shahriar Kabir
- Medical Oncology National Institute of Cancer Research and Hospital Dhaka Bangladesh
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Wu J, Li J, Li S, Zhang TP, Li LJ, Lv TT, Pan HF, Ye DQ. Association of HLA-DQB1 polymorphisms with rheumatoid arthritis: a meta-analysis. Postgrad Med J 2017; 93:618-625. [DOI: 10.1136/postgradmedj-2016-134724] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 03/09/2017] [Accepted: 03/19/2017] [Indexed: 01/26/2023]
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9
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Konda Mohan V, Ganesan N, Gopalakrishnan R, Venkatesan V. HLA-DRB1
shared epitope alleles in patients with rheumatoid arthritis: relation to autoantibodies and disease severity in a south Indian population. Int J Rheum Dis 2016; 20:1492-1498. [DOI: 10.1111/1756-185x.12948] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vasanth Konda Mohan
- Department of Biochemistry; Sri Ramachandra Medical College and Research Institute; Sri Ramachandra University; Chennai India
| | - Nalini Ganesan
- Department of Biochemistry; Sri Ramachandra Medical College and Research Institute; Sri Ramachandra University; Chennai India
| | | | - Vettriselvi Venkatesan
- Department of Human Genetics; Sri Ramachandra Medical College and Research Institute; Sri Ramachandra University; Chennai India
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Genética da artrite reumatoide: é necessário um novo impulso em populações latino‐americanas. REVISTA BRASILEIRA DE REUMATOLOGIA 2016. [DOI: 10.1016/j.rbr.2015.08.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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11
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Fan S, Li C, Ai R, Wang M, Firestein GS, Wang W. Computationally expanding infinium HumanMethylation450 BeadChip array data to reveal distinct DNA methylation patterns of rheumatoid arthritis. Bioinformatics 2016; 32:1773-8. [PMID: 26883487 DOI: 10.1093/bioinformatics/btw089] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 02/11/2016] [Indexed: 12/31/2022] Open
Abstract
MOTIVATION DNA methylation signatures in rheumatoid arthritis (RA) have been identified in fibroblast-like synoviocytes (FLS) with Illumina HumanMethylation450 array. Since <2% of CpG sites are covered by the Illumina 450K array and whole genome bisulfite sequencing is still too expensive for many samples, computationally predicting DNA methylation levels based on 450K data would be valuable to discover more RA-related genes. RESULTS We developed a computational model that is trained on 14 tissues with both whole genome bisulfite sequencing and 450K array data. This model integrates information derived from the similarity of local methylation pattern between tissues, the methylation information of flanking CpG sites and the methylation tendency of flanking DNA sequences. The predicted and measured methylation values were highly correlated with a Pearson correlation coefficient of 0.9 in leave-one-tissue-out cross-validations. Importantly, the majority (76%) of the top 10% differentially methylated loci among the 14 tissues was correctly detected using the predicted methylation values. Applying this model to 450K data of RA, osteoarthritis and normal FLS, we successfully expanded the coverage of CpG sites 18.5-fold and accounts for about 30% of all the CpGs in the human genome. By integrative omics study, we identified genes and pathways tightly related to RA pathogenesis, among which 12 genes were supported by triple evidences, including 6 genes already known to perform specific roles in RA and 6 genes as new potential therapeutic targets. AVAILABILITY AND IMPLEMENTATION The source code, required data for prediction, and demo data for test are freely available at: http://wanglab.ucsd.edu/star/LR450K/ CONTACT: wei-wang@ucsd.edu or gfirestein@ucsd.edu SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Shicai Fan
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, China Department of Chemistry and Biochemistry
| | - Chengzhe Li
- School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, China
| | - Rizi Ai
- Department of Chemistry and Biochemistry
| | | | - Gary S Firestein
- Division of Rheumatology, Allergy and Immunology, University of California San Diego, La Jolla, CA, USA
| | - Wei Wang
- Department of Chemistry and Biochemistry
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12
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Castro-Santos P, Díaz-Peña R. Genetics of rheumatoid arthritis: a new boost is needed in Latin American populations. REVISTA BRASILEIRA DE REUMATOLOGIA 2015; 56:171-7. [PMID: 27267531 DOI: 10.1016/j.rbre.2015.10.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 08/30/2015] [Indexed: 01/17/2023] Open
Abstract
Rheumatoid arthritis (RA) is an autoimmune inflammatory rheumatic disease which affects several organs and tissue, predominantly the synovial joints. Like many other autoimmune diseases, RA is a complex disease, where genetic variants, environmental factors and random events interact to trigger pathological pathways. Genetic implication in RA is evident, and recent advances have expanded our knowledge about the genetic factors that contribute to RA. An exponential increment in the number of genes associated with the disease has been described, mainly through gene wide screen studies (GWAS) involving international consortia with large patient cohorts. However, there are a few studies on Latin American populations. This article describes what is known about the RA genetics, the future that is emerging, and how this will develop a more personalized approach for the treatment of the disease. Latin American RA patients cannot be excluded from this final aim, and a higher collaboration with the international consortia may be needed for a better knowledge of the genetic profile of patients from this origin.
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Affiliation(s)
| | - Roberto Díaz-Peña
- Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Talca, Chile; Department of Immunology, Hospital Universitario Central de Asturias, Oviedo, Spain.
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Whitaker JW, Boyle DL, Bartok B, Ball ST, Gay S, Wang W, Firestein GS. Integrative omics analysis of rheumatoid arthritis identifies non-obvious therapeutic targets. PLoS One 2015; 10:e0124254. [PMID: 25901943 PMCID: PMC4406750 DOI: 10.1371/journal.pone.0124254] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Accepted: 03/12/2015] [Indexed: 11/19/2022] Open
Abstract
Identifying novel therapeutic targets for the treatment of disease is challenging. To this end, we developed a genome-wide approach of candidate gene prioritization. We independently collocated sets of genes that were implicated in rheumatoid arthritis (RA) pathogenicity through three genome-wide assays: (i) genome-wide association studies (GWAS), (ii) differentially expression in RA fibroblast-like synoviocytes (FLS), and (iii) differentially methylation in RA FLS. Integrated analysis of these complementary data sets identified a significant enrichment of multi-evidence genes (MEGs) within pathways relating to RA pathogenicity. One MEG is Engulfment and Cell Motility Protein-1 (ELMO1), a gene not previously considered as a therapeutic target in RA FLS. We demonstrated in RA FLS that ELMO1 is: (i) expressed, (ii) promotes cell migration and invasion, and (iii) regulates Rac1 activity. Thus, we created links between ELMO1 and RA pathogenicity, which in turn validates ELMO1 as a potential RA therapeutic target. This study illustrated the power of MEG-based approaches for therapeutic target identification.
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Affiliation(s)
- John W. Whitaker
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California, United States of America
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, California, United States of America
| | - David L. Boyle
- Division of Rheumatology, Allergy and Immunology, University of California San Diego, La Jolla, California, United States of America
| | - Beatrix Bartok
- Division of Rheumatology, Allergy and Immunology, University of California San Diego, La Jolla, California, United States of America
| | - Scott T. Ball
- Department of Orthopaedics, University of California San Diego School of Medicine, La Jolla, California, United States of America
| | - Steffen Gay
- Department of Rheumatology, University Hospital Zürich, CH-8091, Zurich, Switzerland
| | - Wei Wang
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California, United States of America
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, California, United States of America
- * E-mail: (WW); (GSF)
| | - Gary S. Firestein
- Division of Rheumatology, Allergy and Immunology, University of California San Diego, La Jolla, California, United States of America
- * E-mail: (WW); (GSF)
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Hussein YM, Mohamed RH, El-Shahawy EE, Alzahrani SS. Interaction between TGF-β1 (869C/T) polymorphism and biochemical risk factor for prediction of disease progression in rheumatoid arthritis. Gene 2014; 536:393-7. [DOI: 10.1016/j.gene.2013.11.042] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 10/26/2013] [Accepted: 11/17/2013] [Indexed: 10/25/2022]
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Summarizing techniques that combine three non-parametric scores to detect disease-associated 2-way SNP-SNP interactions. Gene 2013; 533:304-12. [PMID: 24076437 DOI: 10.1016/j.gene.2013.09.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 08/30/2013] [Accepted: 09/09/2013] [Indexed: 10/26/2022]
Abstract
Identifying susceptibility genes that influence complex diseases is extremely difficult because loci often influence the disease state through genetic interactions. Numerous approaches to detect disease-associated SNP-SNP interactions have been developed, but none consistently generates high-quality results under different disease scenarios. Using summarizing techniques to combine a number of existing methods may provide a solution to this problem. Here we used three popular non-parametric methods-Gini, absolute probability difference (APD), and entropy-to develop two novel summary scores, namely principle component score (PCS) and Z-sum score (ZSS), with which to predict disease-associated genetic interactions. We used a simulation study to compare performance of the non-parametric scores, the summary scores, the scaled-sum score (SSS; used in polymorphism interaction analysis (PIA)), and the multifactor dimensionality reduction (MDR). The non-parametric methods achieved high power, but no non-parametric method outperformed all others under a variety of epistatic scenarios. PCS and ZSS, however, outperformed MDR. PCS, ZSS and SSS displayed controlled type-I-errors (<0.05) compared to GS, APDS, ES (>0.05). A real data study using the genetic-analysis-workshop 16 (GAW 16) rheumatoid arthritis dataset identified a number of interesting SNP-SNP interactions.
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Muazzam AG, Mansoor A, Ali L, Siddiqi S, Hameed A, Ajmal M, Mazhar K. Association of HLA-DRB1 and -DQB1alleles and haplotypes with rheumatoid arthritis in a Pakistani population. Arthritis Res Ther 2013; 15:R95. [PMID: 23968403 PMCID: PMC3978885 DOI: 10.1186/ar4275] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Accepted: 08/22/2013] [Indexed: 12/02/2022] Open
Abstract
Introduction Rheumatoid arthritis is an autoimmune disease with poorly understood pathophysiology. Genetic components of disease etiology, especially human leukocyte antigen (HLA) associations, are well known. Ethnic differences account for a number of variations in disease association with the HLA locus and there seem to be differences in various studies regarding its genetic predisposition. This study was aimed at determining the contribution of DRB1 and DQB1 components of HLA class II in rheumatoid arthritis in a Pakistani cohort. Method For this study, 110 patients and 120 healthy controls from the same geographical area and matched ethnicity were enrolled. Blood DNA was isolated from all the subjects and HLA alleles were typed following allele specific amplification. Subsequently, haplotypes were generated and allelic and haplotype distribution frequencies were compared among the patients and controls using χ2 and Arlequin software. The data obtained by this analysis were also compared with other reported associations found in the Pakistani population by meta-analysis. Results HLA allelic status was determined among the patients and controls from the same geographical area to account for differences in ethnicity and environmental factors. Significant associations were found for alleles as well as haplotypes among the patients of rheumatoid arthritis. DRB1*10, DQB1*05 and DQB1*602 were found to be associated with disease susceptibility, whereas DRB1*11 and DQB1*02 had protective effect against the disease. Similarly, haplotype DRB1*10-DQB1*05 was associated disease risk, whereas DRB1*07-DQB1*02 and DRB1*11-DQB1*0301 had a protective effect. Conclusion There is a significant DRB1and DQB1 allele and haplotype association with rheumatoid arthritis susceptibility and protection.
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Herráez DL, Martínez-Bueno M, Riba L, de la Torre IG, Sacnún M, Goñi M, Berbotto GA, Paira S, Musuruana JL, Graf CE, Alvarellos AJ, Messina OD, Babini AM, Strusberg I, Marcos JC, Scherbarth H, Spindler AJ, Quinteros A, Toloza SMA, Moreno JLC, Catoggio LJ, Tate G, Eimon A, Citera G, Catalán Pellet A, Nasswetter GG, Cardiel MH, Miranda P, Ballesteros F, Esquivel-Valerio JA, Maradiaga-Ceceña MA, Acevedo-Vásquez EM, García García C, Tusié-Luna T, Pons-Estel BA, Alarcón-Riquelme ME. Rheumatoid Arthritis in Latin Americans Enriched for Amerindian Ancestry Is Associated With Loci in Chromosomes 1, 12, and 13, and the HLA Class II Region. ACTA ACUST UNITED AC 2013; 65:1457-67. [DOI: 10.1002/art.37923] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2012] [Accepted: 02/26/2013] [Indexed: 02/06/2023]
Affiliation(s)
- David López Herráez
- Centro Pfizer-Universidad de Granada-Junta de Andalucía de Genómica e Investigaciones Oncológicas, Granada, Spain
| | - Manuel Martínez-Bueno
- Centro Pfizer-Universidad de Granada-Junta de Andalucía de Genómica e Investigaciones Oncológicas, Granada, Spain
| | - Laura Riba
- Instituto de Investigaciones Biomédicas de la Universidad Nacional Autónoma de México and Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | | | | | - Mario Goñi
- Instituto Lucha Antipoliomielítica de Rosario, Rosario, Argentina
| | | | | | | | | | | | | | | | | | - Juan Carlos Marcos
- Centro Pfizer-Universidad de Granada-Junta de Andalucía de Genómica e Investigaciones Oncológicas, Granada, Spain
| | - Hugo Scherbarth
- Hospital Interzonal General de Agudos Oscar E. Alende, Mar del Plata, Argentina
| | | | - Ana Quinteros
- Fundación Instituto para la Promoción de la Salud y la Educación, San Miguel de Tucumán, Argentina
| | - Sergio M. A. Toloza
- Hospital Interzonal San Juan Bautista, San Fernando del Valle de Catamarca, Argentina
| | | | | | | | - Alicia Eimon
- Centro de Educación Médica e Investigaciones Clínicas, Buenos Aires, Argentina
| | - Gustavo Citera
- Instituto de Rehabilitación Psicofísica, Ciudad Autónoma de Buenos Aires, Argentina
| | | | | | - Mario H. Cardiel
- Unidad de Investigación “Dr. Mario Alvizouri Muñoz,” Hospital General “Dr. Miguel Silva,” Secretaría de Salud de Michoacán, Morelia, Michoacán, Mexico
| | | | | | - Jorge A. Esquivel-Valerio
- Hospital Universitario Dr. José Eleuterio González and Universidad Autonoma de Nuevo León, Monterrey, Mexico
| | | | - Eduardo M. Acevedo-Vásquez
- Hospital Nacional Guillermo Almenara Irigoyen EsSalud and Universidad Nacional Mayor de San Marcos, Lima, Peru
| | | | - Teresa Tusié-Luna
- Instituto de Investigaciones Biomédicas de la Universidad Nacional Autónoma de México and Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | | | - Marta E. Alarcón-Riquelme
- Centro Pfizer-Universidad de Granada-Junta de Andalucía de Genómica e Investigaciones Oncológicas, Granada, Spain, and Oklahoma Medical Research Foundation, Oklahoma City
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Li W, Wang T, Ling F, Zhao H, Wei L, Zhuo M, Du H, Wang X. Identification of MhcMafa-DRB alleles in a cohort of cynomolgus macaques of Vietnamese origin. Am J Primatol 2012; 74:958-66. [PMID: 22903750 DOI: 10.1002/ajp.22048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Revised: 05/04/2012] [Accepted: 05/23/2012] [Indexed: 11/11/2022]
Abstract
Cynomolgus macaques have been used widely to build a research model of infectious and chronic diseases, as well as in transplantation studies, where disease susceptibility and/or resistance are associated with the major histocompatibility complex (MHC). To better elucidate polymorphisms and genetic differences in the Mafa-DRB locus, and facilitate the experimental use of cynomolgus macaques, we used pool screening combined with cloning and direct sequencing of polymerase chain reaction products to characterize MhcMafa-DRB gene alleles in 153 Vietnamese cynomolgus macaques. We identified 30 Mafa-DRB alleles belonging to 17 allelic lineages, including four novel sequences that had not been documented in earlier reports. The highest frequency allele was Mafa-DRB*W27:04, which was present in 7 of 35 (20%) monkeys. The next most frequent alleles were Mafa-DRB*3:07 and Mafa-DRB*W7:01, which were detected in 5 of 35 (14.3%) and 4 of 35 (11.4%) of the monkeys, respectively. The high-frequency alleles in this Vietnamese population may be high priority targets for additional characterization of immune functions. Only the DRB1*03 and DRB1*10 lineages were also present in humans, whereas the remaining alleles were monkey-specific lineages. We found 25 variable sites by aligning the deduced amino acid sequences of 29 identified alleles. Evolutionary and population analyses based on these sequences showed that human, rhesus, and cynomolgus macaques share several Mhc-DRB lineages and the shared polymorphisms in the DRB region may be attributable to the existence of interbreeding between rhesus and cynomolgus macaques. This information will promote the understanding of MHC diversity and polymorphism in cynomolgus macaques and increase the value of this species as a model for biomedical research.
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Affiliation(s)
- Wai Li
- School of Life Science, General Hospital of PLA T, Beijing, PR China
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Ling F, Zhuo M, Ni C, Zhang GQ, Wang T, Li W, Wei LQ, Du HL, Wang JF, Wang XN. Comprehensive identification of high-frequency and co-occurring Mafa-B, Mafa-DQB1, and Mafa-DRB alleles in cynomolgus macaques of Vietnamese origin. Hum Immunol 2012; 73:547-53. [PMID: 22365968 PMCID: PMC7115533 DOI: 10.1016/j.humimm.2012.02.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Revised: 01/24/2012] [Accepted: 02/01/2012] [Indexed: 11/13/2022]
Abstract
High-frequency alleles and/or co-occurring human leukocyte antigen (HLA) alleles across loci appear to be more important than individual alleles, because they might be markers of disease risk that have clinical value as biomarkers for targeted screening or the development of new therapies. To better elucidate the major histocompatibility complex background and to facilitate the experimental use of cynomolgus macaques, Mafa-B, Mafa-DQB1, and Mafa-DRB alleles were characterized and their combinations were investigated from 30 macaques of Vietnamese origin by cloning and sequencing. A total of 48 Mafa-B, 22 Mafa-DQB1, and 42 Mafa-DRB alleles, were detected in this study, respectively. In addition, two Mafa-DQB1 and eight Mafa-DRB alleles represented novel sequences that had not been documented in earlier studies. Our results also showed that the macaque from Vietnam might be valuable because >30% of the test animals possessed Mafa-DRB*w304 (30%) and -DQB1*0616 (30%). We report that the combination of major histocompatibility complex (MHC) class I and II alleles, including the combination of DRB3*0403-DRB*w304, DRB1*1013-DRB*w304, and Mafa-B*007:01:01-DRB*w304, which was in 17%, 13%, and 13% of the animals, respectively. Interesting, more than two Mafa-DQB1 alleles detected in one animal in this study suggest that Mafa-DQB1, like Mafa-DRB, might be a duplication in the chromosome, which have ever been documented in cynomolgus monkeys but has not yet been observed in rhesus macaques or other primates. Our results for the high frequency of commonly co-occurring MHC alleles across loci in a cohort of the Vietnamese cynomolgus macaque emphasized the value of this species as a model for biomedical research.
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Affiliation(s)
- Fei Ling
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, P.R. China
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García-Obregón S, Alfonso-Sánchez MA, Gómez-Pérez L, Pérez-Miranda AM, Arroyo D, de Pancorbo MM, Peña JA. Microsatellites and Alu elements from the human MHC in Valencia (Spain): analysis of genetic relationships and linkage disequilibrium. Int J Immunogenet 2011; 38:483-91. [PMID: 21933351 DOI: 10.1111/j.1744-313x.2011.01037.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two different sets of noncoding markers (microsatellites and Alu elements) from the human chromosome six were analysed in 106 individuals from Valencia (Spain), with the aim of exploring the effect of evolutionary forces on the genetic variability of the major histocompatibility complex (MHC) and assessing the potential usefulness of these genetic loci in phylogenetic studies. Linkage disequilibrium (LD) analyses revealed statistically significant associations among markers located in the MHC class I region, and also between the microsatellite D6S2792 and several genetic loci from MHC class I, II and III regions. Results of the Ewens-Watterson test indicated that only D6S2792 showed significant departure from selective neutrality. Despite the paucity of haplotype data in the literature, results of the phylogenetic analyses at world scale (Alu elements) showed that the genetic relationships of Valencia were mainly determined by the ethnic ancestry of the populations considered, whereas at European scale (microsatellites) population affinities were strongly influenced by geography. Our findings suggest that noncoding markers from the MHC such as Alu and microsatellite loci might have a potential value as lineage (ancestry) markers in investigations into evolutionary, medical and forensic perspectives.
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Affiliation(s)
- S García-Obregón
- Departamento de Genética y Antropología Física, Universidad del País Vasco, Bilbao, Spain
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Epidemiología genética de la artritis reumatoide: ¿qué esperar de América Latina? BIOMEDICA 2011. [DOI: 10.7705/biomedica.v26i4.326] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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The contribution of genetic factors to rheumatoid arthritis. Rheumatology (Oxford) 2011. [DOI: 10.1016/b978-0-323-06551-1.00086-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Delgado-Vega AM, Anaya JM. Meta-analysis of HLA-DRB1 polymorphism in Latin American patients with rheumatoid arthritis. Autoimmun Rev 2007; 6:402-8. [PMID: 17537386 DOI: 10.1016/j.autrev.2006.11.004] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2006] [Accepted: 11/23/2006] [Indexed: 02/05/2023]
Abstract
OBJECTIVES To estimate the common effect size of HLA-DRB1 alleles on rheumatoid arthritis (RA) susceptibility across Latin America populations through a meta-analysis combining the results of published data. METHODS Case-control studies on HLA-DRB1 association with RA in Latin America were searched up to October 2006. Genotype frequencies were extracted according to both shared epitope (SE) and HLA-DR4 positive or negative alleles. The effect summary odds ratio (OR) and 95% confidence intervals was obtained. Heterogeneity and publication bias were assessed. RESULTS Eight studies containing 684 cases and 1015 controls were included. Under the random effects model, the common OR was 3.28 (1.93, 5.60) (p<0.0001) and 3.54 (2.47, 5.05) (p=4.22 x 10(-12)) for HLA-DR4 and SE, respectively. There was no evidence of publication bias according to Funnel plot and Egger's regression test (p=0,445 for DR4 and p=0,464 for SE meta-analysis). Significant heterogeneity was observed for HLA-DR4 (I2=81.06%, Q=36.96, p=0.000005) but not for the SE meta-analysis. CONCLUSIONS HLA-DR4 and SE positive HLA-DRB1 alleles (mainly HLA-DRB10404) are associated with RA in Latin Americans. Heterogeneity is expected owing to the diverse degree of admixture between the examined populations. Our findings support the HLA as a major susceptibility locus for RA and validate the SE hypothesis in Latin America.
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Affiliation(s)
- Angélica M Delgado-Vega
- Unidad de Biología Celular e Inmunogenética, Corporación para Investigaciones Biológicas, Medellín, Colombia; School of Medicine, Universidad del Rosario, Bogotá, Colombia
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Mewar D, Marinou I, Lee ME, Timms JM, Kilding R, Teare MD, Read RC, Wilson AG. Haplotype-specific gene expression profiles in a telomeric major histocompatibility complex gene cluster and susceptibility to autoimmune diseases. Genes Immun 2006; 7:625-31. [PMID: 16971954 DOI: 10.1038/sj.gene.6364339] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The telomeric class III region of the major histocompatibility complex is gene dense, but apart from the three tumour necrosis factor (TNF) superfamily members (TNF, lymphotoxin alpha and lymphotoxin beta) little is known of the expression and function of the majority of the genes. Recent genetic studies in autoimmune diseases, particularly rheumatoid arthritis (RA), have suggested a human leukocyte antigen (HLA)-DR-independent disease effect in this region. To gain further insights into these associations, we used lipopolysaccharide-stimulated human macrophages to examine inducible mRNA expression and genotype-phenotype relationships for genes in this region. Following stimulation in addition to the expected induction of TNF mRNA, a 14-fold increase of ATP6V1G2 at 18 h (P<0.001) was seen, whereas B-associated transcript (BAT)2 (P<0.001) and leucocyte-specific transcript (LST)1 (P<0.001) were both downregulated. By genotyping single-nucleotide polymorphisms spanning a 70 kb interval centred on the TNF locus, we constructed haplotypes and determined associated expression profiles for 10 genes in the cluster using quantitative real-time polymerase chain reaction. Overexpression of BAT1 mRNA was associated with carriers of a haplotype containing the LST1 marker transmitted to RA cases in a family study and also DRB1(*)15 associated with susceptibility to nephritis in systemic lupus erythematosus. The implications of our findings for the understanding of genetic associations with disease susceptibility in this region are discussed.
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Affiliation(s)
- D Mewar
- School of Medicine and Biomedical Sciences, University of Sheffield, Sheffield, UK.
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Abstract
Rheumatoid arthritis (RA) is a heterogeneous autoimmune disorder of unknown cause with variable clinical expression. About 70% of patients are women. Genetic factors play an important role and likely account for about 60% of disease susceptibility and expression. The association with the HLA-DRB1 gene is the best understood, although several non-HLA loci have been linked to RA, including the 18q21 region of the TNFRSR11A gene, which encodes the receptor activator of nuclear factor kappaB, important in bone resorption in RA. Genetic factors are also important in the treatment of RA because the activity of enzymes relevant in the metabolism of drugs such as methotrexate and azathioprine, including methylenetetrahydrofolate reductase and thiopurine methyltransferase, are in part genetically determined.
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Affiliation(s)
- Carl Turesson
- Division of Rheumatology, Mayo Clinic College of Medicine, Rochester, Minn 55905, USA
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Agrawal C, Raghav SK, Gupta B, Das RH, Chaturvedi VP, Goswami K, Das HR. Tumor necrosis factor-alpha microsatellite polymorphism association with rheumatoid arthritis in Indian patients. Arch Med Res 2005; 36:555-9. [PMID: 16099338 DOI: 10.1016/j.arcmed.2005.03.035] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2004] [Accepted: 03/03/2005] [Indexed: 11/22/2022]
Abstract
BACKGROUND Level of TNF-alpha increases significantly in synovial fluid of rheumatoid arthritis (RA) patients. It is proposed that tumor necrosis factor (TNF) microsatellite alleles may influence its expression and presumably can contribute to the disease severity. However, there is a lack of such study to predict any such association with RA in an Indian population. METHODS In this study, we investigated the differential pattern of distribution of TNF microsatellite alleles in an Indian population and its association with RA. One hundred eighteen RA patients and 120 healthy individuals were genotyped for TNF microsatellite alleles using Genescan. Odds ratio was calculated to demonstrate the correlation between allelic distribution and clinical severity. RESULTS The study shows that distribution of TNF microsatellite alleles in an Indian population is very different from other Asian Oriental and Western populations, except for some similarities with an Italian population. Frequency of microsatellite TNFd3 allele (9.24 vs. 3.85%, chi(2)=5.6, p < or =0.0179, OR=0.393, 95% CI=0.177-0.87) and more interestingly TNFd3 containing haplotypes has been found significantly reduced in patients. On the contrary, TNFb5 allele frequency increased in the patients (22.3 vs. 30.8%, chi(2)=4.4, p < or =0.036, OR=1.55, 95% CI=1.027-2.344) as compared to controls. Furthermore, significant increase in frequency of this allele in severe patients (22.3 vs. 33.8%, chi(2)=6.22, p < or =0.013, OR=1.78, 95% CI=1.132-2.798) along with the significant increase in haplotypes containing this allele supports the association of TNFb5 with disease severity. CONCLUSIONS In an Indian population, TNFb5 may be considered as a risk factor, whereas TNFd3, unlike others, may be protective for RA.
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Affiliation(s)
- Charu Agrawal
- Institute of Genomics & Integrative Biology, Delhi University Campus, Delhi, India
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Kilding R, Wilson AG. Mapping of a novel susceptibility gene for rheumatoid arthritis in the telomeric MHC region. Cytokine 2005; 32:71-5. [PMID: 16199168 DOI: 10.1016/j.cyto.2005.07.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Rheumatoid arthritis (RA) is a complex heterogeneous disease with an estimated genetic contribution to of 30-50%. Approximately one third arises from the major histocompatibility complex (MHC) at 6p21.3. The contribution of specific DRB1 alleles encoding the shared epitope has been well described, however, several recent studies have suggested that additional telomeric genetic influences may exist. This region is difficult to study as a result of the presence of strong linkage disequilibrium (LD) within the MHC and high gene density particularly in the central class III region. In this article we review the current data supporting the existence of a non-DRB1 susceptibility gene for rheumatoid arthritis, in particular within the class III region.
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Affiliation(s)
- Rachael Kilding
- Division of Genomic Medicine, The University of Sheffield, Royal Hallamshire Hospital, Glossop Road, Sheffield S10 2JF, United Kingdom
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28
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Turesson C, Weyand CM, Matteson EL. Genetics of rheumatoid arthritis: Is there a pattern predicting extraarticular manifestations? ACTA ACUST UNITED AC 2004; 51:853-63. [PMID: 15478157 DOI: 10.1002/art.20693] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Carl Turesson
- Mayo Clinic College of Medicine, Rochester, Minnesota, USA.
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Newton JL, Harney SMJ, Wordsworth BP, Brown MA. A review of the MHC genetics of rheumatoid arthritis. Genes Immun 2004; 5:151-7. [PMID: 14749714 DOI: 10.1038/sj.gene.6364045] [Citation(s) in RCA: 185] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Rheumatoid arthritis is a common complex genetic disease, and, despite a significant genetic element, no gene other than HLA-DRB1 has been clearly demonstrated to be involved in the disease. However, this association accounts for less than half the overall genetic susceptibility. Investigation of other candidate genes, in particular those that reside within the major histocompatibility complex, are hampered by the presence of strong linkage disequilibrium and problems with study design.
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Affiliation(s)
- J L Newton
- Institute of Musculoskeletal Sciences, University of Oxford, The Botnar Research Centre, Nuffield Orthopaedic Centre, Headington, Oxford, UK
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Kilding R, Iles MM, Timms JM, Worthington J, Wilson AG. Additional genetic susceptibility for rheumatoid arthritis telomeric of the DRB1 locus. ACTA ACUST UNITED AC 2004; 50:763-9. [PMID: 15022317 DOI: 10.1002/art.20043] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Rheumatoid arthritis (RA) has an estimated genetic contribution of 30-50%, approximately one-third of which arises from the major histocompatibility complex on 6p21.3. Many studies have implicated alleles of DRB1 that encode a shared epitope. However, several recent studies have suggested that additional telomeric genetic influences may exist. In this study, we sought to investigate whether a separate non-DRB1 effect could be detected and to determine its likely location. METHODS We typed 13 single-nucleotide polymorphisms, located mainly in the telomeric class III region of the major histocompatibility complex, in 164 British Caucasian families with RA that had at least 1 affected offspring and used unconditioned and DRB1-conditioned transmission disequilibrium tests (TDTs). RESULTS Unconditioned TDTs revealed overtransmission of shared epitope alleles (P = 2.12 x 10(-5)) and an allele of the HLA-B-associated transcript 1 (BAT1) gene in the telomeric class III region (P = 0.009). Using a DRB1-conditioned TDT to assess whether an independent effect existed, we detected unequal transmission of alleles of lymphocyte-specific transcript 1 (P = 0.004), BAT1 (P = 0.003), and PG8 (P = 0.003). CONCLUSION At least 1 additional non-DRB1 susceptibility locus for RA exists in an interval that encompasses the junction of the class III and I regions. This is a genomic segment of high linkage disequilibrium containing a large number of poorly characterized immunomodulatory genes.
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Affiliation(s)
- Rachael Kilding
- The University of Sheffield, Royal Hallamshire Hospital, Sheffield, UK
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Bu R, Borysenko CW, Li Y, Cao L, Sabokbar A, Blair HC. Expression and function of TNF-family proteins and receptors in human osteoblasts. Bone 2003; 33:760-70. [PMID: 14623051 DOI: 10.1016/j.bone.2003.07.006] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We studied how tumor necrosis-factor (TNF)-family proteins interact with osteoblasts to resolve several controversial points. We measured expression of TNFs, TNF-receptors, and nonsignaling (decoy) TNF receptors in human osteoblasts derived from mesenchymal stem cells and in MG63 human osteosarcoma cells using unamplified mRNA screening, with secondary Western or PCR analysis where indicated, and studied the effects of TNFs on osteoblasts in cell culture. Expression of TNFs and receptors was similar in MG63 cells and osteoblasts. TNF-R1 (p55), TRAIL receptor 1 and 2 (DR4 and 5), and Fas were expressed; RANK was undetectable. TNF-family ligands RANKL, TRAIL, and TNFalpha were expressed, but mRNAs were typically at low levels relative to receptors, suggesting that osteoblastic TNF signals, including RANKL, require specific stimuli. Flow cytometry of MG63 cells confirmed TNFalpha receptors and identified subpopulations with high surface-bound TNFalpha. Decoy receptors expressed included a novel soluble form of TNFRSF25 (formerly DR3 or Apo3), implicated in rheumatoid-arthritis linkage studies, as well as osteoprotegerin, a well-characterized osteoblast protein that binds TRAIL and RANKL, and DcR2, which binds TRAIL. Osteoblast apoptosis was studied using terminal deoxynucleotidyl transferase labeling and annexin V binding. MG63 cells were resistant to apoptosis by exogenous TNFalpha except when grown in media promoting osteoblast-like growth or matrix nodules. However, in media supporting osteoblast-like phenotype, apoptosis was induced by anti-Fas or TNF, in contrast to other studies with human osteoblasts. TRAIL caused cell retraction, supporting functional TRAIL response in cell differentiation, but did not cause apoptosis. We conclude that human osteoblasts have functional receptors for FasL, TNFalpha, TRAIL, but not RANKL, and that osteoblasts are protected by multiple nonsignaling TNF receptors against destruction by TNF-family proteins under conditions favoring cell growth.
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Affiliation(s)
- Rongfa Bu
- Departments of Pathology and Cell Biology & Physiology, University of Pittsburgh School of Medicine, and Veteran's Affairs Medical Center, Pittsburgh, PA 15261, USA
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Lo SF, Huang CM, Wu MC, Wu JY, Tsai FJ. Lack of association of tumor necrosis factor alpha gene polymorphism in patients with rheumatoid arthritis in central Taiwan. Rheumatol Int 2003; 23:151-3. [PMID: 12750939 DOI: 10.1007/s00296-002-0256-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2002] [Accepted: 08/28/2002] [Indexed: 11/26/2022]
Abstract
The aim of this study was to investigate the association of tumor necrosis factor alpha (TNFalpha) gene promoter polymorphisms in Chinese patients with rheumatoid arthritis (RA) in central Taiwan. A total of 106 RA patients and 253 normal controls were studied. Polymerase chain reaction (PCR)-based restriction analysis was used to identify A/G polymorphism at position 308 in the promoter region of the TNFalpha, which is located at 6q21.3. For the genotype of TNFalpha-308 polymorphism, there was no statistically significant difference between RA patients and normal controls (Fisher's exact test, P=0.82). Additionally, no statistical association in the distribution of TNFalpha-308 polymorphism between rheumatoid factor (RF)-positive and -negative patients was noted. The lack of an association of TNFalpha-308 polymorphism with RA and RF in our study implies that TNFalpha-308 polymorphism cannot serve as a candidate gene marker for screening RA patients in Taiwan.
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Affiliation(s)
- Sui-Foo Lo
- Department of Physical Medicine and Rehabilitation, China Medical College Hospital, Taichung, Taiwan
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Haukim N, Bidwell JL, Smith AJP, Keen LJ, Gallagher G, Kimberly R, Huizinga T, McDermott MF, Oksenberg J, McNicholl J, Pociot F, Hardt C, D'Alfonso S. Cytokine gene polymorphism in human disease: on-line databases, supplement 2. Genes Immun 2002; 3:313-30. [PMID: 12209358 DOI: 10.1038/sj.gene.6363881] [Citation(s) in RCA: 183] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- N Haukim
- Department of Pathology and Microbiology, University of Bristol, Homoeopathic Hospital Site, Cotham, Bristol BS6 6JU, UK
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Buckner JH, Nepom GT. Genetics of rheumatoid arthritis: is there a scientific explanation for the human leukocyte antigen association? Curr Opin Rheumatol 2002; 14:254-9. [PMID: 11981323 DOI: 10.1097/00002281-200205000-00011] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Human leukocyte antigen genes associated with rheumatoid arthritis are commonly found in the unaffected population, implying that causal mechanisms of disease involve interactions between these genes and other factors. A variety of approaches-genetic, structural, and immunologic-are used to explore possible molecular interactions that may contribute to understanding the basis for this disease association. The specific relation between human leukocyte antigen-DR4 alleles and rheumatoid arthritis remains one of the strongest and most thoroughly studied examples of human leukocyte antigen risk genes among human autoimmune disorders.
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Affiliation(s)
- Jane H Buckner
- Benaroya Research Institute, Virginia Mason Research Center, Seattle, Washington 98101, USA.
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Abstract
The investigation of genetic factors affecting the development or severity of rheumatoid arthritis may give new insights into the pathways involved in disease pathogenesis and lead to the identification of novel therapeutic targets. Recently, several novel approaches have been used in the attempt to unravel the complex association of rheumatoid arthritis with the human leukocyte antigen ( HLA ) gene region. It is clear that non-HLA genes are also involved in disease pathogenesis, and identifying them remains a challenge. In the past year, considerable headway has been made in this field, and some interesting strategies have been used. This review summarizes the results of many of the HLA and non-HLA studies and tries to draw lessons from the investigation of genetic susceptibility factors in other complex diseases.
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Affiliation(s)
- Anne Barton
- ARC Epidemiology Unit, University of Manchester, Manchester, UK.
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Anaya JM, Correa PA, Mantilla RD, Arcos-Burgos M. Rheumatoid arthritis association in Colombian population is restricted to HLA-DRB1*04 QRRAA alleles. Genes Immun 2002; 3:56-8. [PMID: 11857065 DOI: 10.1038/sj.gene.6363833] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2001] [Revised: 10/25/2001] [Accepted: 10/25/2001] [Indexed: 11/08/2022]
Abstract
In most ethnic groups genetic susceptibility to rheumatoid arthritis (RA) is associated with certain HLA-DRB1 alleles encoding a similar sequence motif called the 'shared epitope' (SE) spanning amino acid positions 70 to 74 in the third diversity region of the outermost domain of the HLA-DRB1 molecule. We examined the association of the SE and RA in 83 Colombian women with established RA and 90 healthy controls. The group HLA-DRB1*04 was associated with RA with respect to controls (47% vs 18%, respectively. OR: 4.1, 95%CI: 2.1-8.2, P < 0.001). HLA-DRB1 alleles carrying the SE QRRAA, but not those carrying QKRAA or RRRAA, were associated with disease (OR: 3.7, 95%CI: 1.73-7.83, P = 0.0009). This association was stronger among HLA-DRB1*04 carriers (OR: 23, 95%CI: 1.3-414, P = 0.002). In our population, the SE QRRAA expressed in DRB1*04 alleles appears critical in identifying women with increased susceptibility to RA.
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Affiliation(s)
- J M Anaya
- Rheumatology Unit, Corporación para Investigaciones Biológicas, Medellín, Colombia, South America.
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Ogedegbe HO. Autoimmune Diseases: A Spectrum of Disease Processes. Lab Med 2001. [DOI: 10.1309/00eg-u5b7-2dug-0gal] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Affiliation(s)
- Henry O. Ogedegbe
- Department of Environmental Health, Molecular and Clinical Sciences, Florida Gulf Coast University, Fort Myers, FL
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