PADI2 is significantly associated with rheumatoid arthritis

Citrullination, a posttranslational modification of peptidyl arginine to citrulline, plays an essential role in rheumatoid arthritis (RA). Citrullination is catalyzed by a group of peptidylarginine deiminases (PADs) including PADI 1, 2, 3, 4 and 6. Many studies have indicated that the gene encoding...

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Veröffentlicht in:PloS one 2013-12, Vol.8 (12), p.e81259-e81259
Hauptverfasser: Chang, Xiaotian, Xia, Yifang, Pan, Jihong, Meng, Qingsong, Zhao, Yan, Yan, Xinfeng
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Zhao, Yan
Yan, Xinfeng
description Citrullination, a posttranslational modification of peptidyl arginine to citrulline, plays an essential role in rheumatoid arthritis (RA). Citrullination is catalyzed by a group of peptidylarginine deiminases (PADs) including PADI 1, 2, 3, 4 and 6. Many studies have indicated that the gene encoding PADI4 is a factor in susceptibility to RA. Some studies have detected PADI2 expression in RA synovial tissues, suggesting that PADI2 also plays an important role in the disease. This study evaluated the possible association between the PADI2-encoding gene and RA. Seventeen tag SNPs across the PAD locus were genotyped using a custom-designed Illumina 96-SNP VeraCode microarray. Peripheral blood samples were collected from patients with RA (n = 267), ankylosing spondylitis (AS, n = 51) and healthy controls (n = 160). The results of genotyping were verified using Sequenom MassARRAY in an independent cohort of 307 patients with RA, 324 patients with AS and 509 healthy controls. A western blot analysis was performed using synovial tissue from patients with RA (n = 7), osteoarthritis (OA, n = 7) and AS (n = 5) to determine the levels of expression of PADI2. A microarray analysis revealed a significant association between three selected PADI2 SNPs (rs2235926, rs2057094, rs2076616) and the presence of RA. The increased susceptibility to RA associated with rs2235926 (OR = 1.706733, 95% CI = [1.576366-1.866587], p = 0.000839) and rs2057094 (OR = 1.360432, 95% CI = [1.065483-1.869482], p = 0.003291) was further confirmed by the Sequenom MassARRAY. No tag SNPs in the PADI2 locus showed a significant association with AS. Increased expression of PADI2 was detected in RA synovial tissues compared with samples from patients with OA and AS. PADI2 is significantly associated with RA and may be involved in the pathogenesis of the disease.
doi_str_mv 10.1371/journal.pone.0081259
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Citrullination is catalyzed by a group of peptidylarginine deiminases (PADs) including PADI 1, 2, 3, 4 and 6. Many studies have indicated that the gene encoding PADI4 is a factor in susceptibility to RA. Some studies have detected PADI2 expression in RA synovial tissues, suggesting that PADI2 also plays an important role in the disease. This study evaluated the possible association between the PADI2-encoding gene and RA. Seventeen tag SNPs across the PAD locus were genotyped using a custom-designed Illumina 96-SNP VeraCode microarray. Peripheral blood samples were collected from patients with RA (n = 267), ankylosing spondylitis (AS, n = 51) and healthy controls (n = 160). The results of genotyping were verified using Sequenom MassARRAY in an independent cohort of 307 patients with RA, 324 patients with AS and 509 healthy controls. A western blot analysis was performed using synovial tissue from patients with RA (n = 7), osteoarthritis (OA, n = 7) and AS (n = 5) to determine the levels of expression of PADI2. A microarray analysis revealed a significant association between three selected PADI2 SNPs (rs2235926, rs2057094, rs2076616) and the presence of RA. The increased susceptibility to RA associated with rs2235926 (OR = 1.706733, 95% CI = [1.576366-1.866587], p = 0.000839) and rs2057094 (OR = 1.360432, 95% CI = [1.065483-1.869482], p = 0.003291) was further confirmed by the Sequenom MassARRAY. No tag SNPs in the PADI2 locus showed a significant association with AS. Increased expression of PADI2 was detected in RA synovial tissues compared with samples from patients with OA and AS. 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This is an open-access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/3.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 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Citrullination is catalyzed by a group of peptidylarginine deiminases (PADs) including PADI 1, 2, 3, 4 and 6. Many studies have indicated that the gene encoding PADI4 is a factor in susceptibility to RA. Some studies have detected PADI2 expression in RA synovial tissues, suggesting that PADI2 also plays an important role in the disease. This study evaluated the possible association between the PADI2-encoding gene and RA. Seventeen tag SNPs across the PAD locus were genotyped using a custom-designed Illumina 96-SNP VeraCode microarray. Peripheral blood samples were collected from patients with RA (n = 267), ankylosing spondylitis (AS, n = 51) and healthy controls (n = 160). The results of genotyping were verified using Sequenom MassARRAY in an independent cohort of 307 patients with RA, 324 patients with AS and 509 healthy controls. A western blot analysis was performed using synovial tissue from patients with RA (n = 7), osteoarthritis (OA, n = 7) and AS (n = 5) to determine the levels of expression of PADI2. A microarray analysis revealed a significant association between three selected PADI2 SNPs (rs2235926, rs2057094, rs2076616) and the presence of RA. The increased susceptibility to RA associated with rs2235926 (OR = 1.706733, 95% CI = [1.576366-1.866587], p = 0.000839) and rs2057094 (OR = 1.360432, 95% CI = [1.065483-1.869482], p = 0.003291) was further confirmed by the Sequenom MassARRAY. No tag SNPs in the PADI2 locus showed a significant association with AS. Increased expression of PADI2 was detected in RA synovial tissues compared with samples from patients with OA and AS. PADI2 is significantly associated with RA and may be involved in the pathogenesis of the disease.</description><subject>Adult</subject><subject>Aged</subject><subject>Analysis</subject><subject>Ankylosing spondylitis</subject><subject>Arginine</subject><subject>Arthritis</subject><subject>Arthritis, Rheumatoid - enzymology</subject><subject>Arthritis, Rheumatoid - genetics</subject><subject>Biocompatibility</subject><subject>Biomedical materials</subject><subject>Citrulline</subject><subject>Consortia</subject><subject>DNA microarrays</subject><subject>Female</subject><subject>Gene expression</subject><subject>Gene Expression Regulation, Enzymologic</subject><subject>Genes</subject><subject>Genetic Loci - genetics</subject><subject>Genetic Predisposition to Disease - genetics</subject><subject>Genomes</subject><subject>Genotyping</subject><subject>Genotyping Techniques</subject><subject>Haplotypes</subject><subject>Humans</subject><subject>Hydrolases - genetics</subject><subject>Kinases</subject><subject>Loci</subject><subject>Male</subject><subject>Medical research</subject><subject>Middle Aged</subject><subject>Osteoarthritis</subject><subject>Pathogenesis</subject><subject>Patients</subject><subject>Peripheral blood</subject><subject>Polymorphism, Single Nucleotide</subject><subject>Protein-arginine deiminase</subject><subject>Protein-Arginine Deiminases</subject><subject>Proteins</subject><subject>Rheumatoid arthritis</subject><subject>Rheumatoid factor</subject><subject>Risk factors</subject><subject>Single nucleotide polymorphisms</subject><subject>Single-nucleotide polymorphism</subject><subject>Spondylitis</subject><subject>Studies</subject><subject>Synovial Membrane - metabolism</subject><subject>Tissues</subject><issn>1932-6203</issn><issn>1932-6203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>BENPR</sourceid><sourceid>DOA</sourceid><recordid>eNqNkltrFDEYhgdR7EH_geiAIHqxa86TIAhLPS0UKp5uQybJ7GSZnWyTTLX_3mx3WnakF5KLhOR533xf8hbFMwjmEFfw7doPoVfdfOt7OweAQ0TFg-IYCoxmDAH88GB9VJzEuAaAYs7Y4-IIEYyFgOS4ePd18WGJShfL6Fa9a5xWfequSxWj104la8rfLrVlaO2wUck7U6qQ2uCSi0-KR43qon06zqfFz08ff5x9mZ1ffF6eLc5nmgmUZoyjmjFhFKcKV8RoaDE3lutcAQMGNtwoyhBWDAlTCQMFoQIaY6qqbmjWnBYv9r7bzkc59h0lJIzmRgBBmVjuCePVWm6D26hwLb1y8mbDh5XMVTvdWWnrRqvGUgDqmqAKcQMgrg3FmDSqMTB7vR9vG-qNNdr2KahuYjo96V0rV_5KYk4pRjuD16NB8JeDjUluXNS261Rv_XBTt0CQc8oz-vIf9P7uRmqlcgOub3y-V-9M5YJUnECByM5rfg-Vh7Ebp3NIGpf3J4I3E0Fmkv2TVmqIUS6_f_t_9uLXlH11wLZWdamNvhuS832cgmQP6uBjDLa5e2QI5C7jt68hdxmXY8az7PnhB92JbkON_wKsp_Xb</recordid><startdate>20131205</startdate><enddate>20131205</enddate><creator>Chang, Xiaotian</creator><creator>Xia, Yifang</creator><creator>Pan, Jihong</creator><creator>Meng, Qingsong</creator><creator>Zhao, Yan</creator><creator>Yan, Xinfeng</creator><general>Public Library of Science</general><general>Public Library of Science (PLoS)</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>IOV</scope><scope>ISR</scope><scope>3V.</scope><scope>7QG</scope><scope>7QL</scope><scope>7QO</scope><scope>7RV</scope><scope>7SN</scope><scope>7SS</scope><scope>7T5</scope><scope>7TG</scope><scope>7TM</scope><scope>7U9</scope><scope>7X2</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8C1</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>H94</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB.</scope><scope>KB0</scope><scope>KL.</scope><scope>L6V</scope><scope>LK8</scope><scope>M0K</scope><scope>M0S</scope><scope>M1P</scope><scope>M7N</scope><scope>M7P</scope><scope>M7S</scope><scope>NAPCQ</scope><scope>P5Z</scope><scope>P62</scope><scope>P64</scope><scope>PATMY</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>PYCSY</scope><scope>RC3</scope><scope>7X8</scope><scope>5PM</scope><scope>DOA</scope></search><sort><creationdate>20131205</creationdate><title>PADI2 is significantly associated with rheumatoid arthritis</title><author>Chang, Xiaotian ; 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Citrullination is catalyzed by a group of peptidylarginine deiminases (PADs) including PADI 1, 2, 3, 4 and 6. Many studies have indicated that the gene encoding PADI4 is a factor in susceptibility to RA. Some studies have detected PADI2 expression in RA synovial tissues, suggesting that PADI2 also plays an important role in the disease. This study evaluated the possible association between the PADI2-encoding gene and RA. Seventeen tag SNPs across the PAD locus were genotyped using a custom-designed Illumina 96-SNP VeraCode microarray. Peripheral blood samples were collected from patients with RA (n = 267), ankylosing spondylitis (AS, n = 51) and healthy controls (n = 160). The results of genotyping were verified using Sequenom MassARRAY in an independent cohort of 307 patients with RA, 324 patients with AS and 509 healthy controls. A western blot analysis was performed using synovial tissue from patients with RA (n = 7), osteoarthritis (OA, n = 7) and AS (n = 5) to determine the levels of expression of PADI2. A microarray analysis revealed a significant association between three selected PADI2 SNPs (rs2235926, rs2057094, rs2076616) and the presence of RA. The increased susceptibility to RA associated with rs2235926 (OR = 1.706733, 95% CI = [1.576366-1.866587], p = 0.000839) and rs2057094 (OR = 1.360432, 95% CI = [1.065483-1.869482], p = 0.003291) was further confirmed by the Sequenom MassARRAY. No tag SNPs in the PADI2 locus showed a significant association with AS. Increased expression of PADI2 was detected in RA synovial tissues compared with samples from patients with OA and AS. PADI2 is significantly associated with RA and may be involved in the pathogenesis of the disease.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>24339914</pmid><doi>10.1371/journal.pone.0081259</doi><tpages>e81259</tpages><oa>free_for_read</oa></addata></record>
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subjects Adult
Aged
Analysis
Ankylosing spondylitis
Arginine
Arthritis
Arthritis, Rheumatoid - enzymology
Arthritis, Rheumatoid - genetics
Biocompatibility
Biomedical materials
Citrulline
Consortia
DNA microarrays
Female
Gene expression
Gene Expression Regulation, Enzymologic
Genes
Genetic Loci - genetics
Genetic Predisposition to Disease - genetics
Genomes
Genotyping
Genotyping Techniques
Haplotypes
Humans
Hydrolases - genetics
Kinases
Loci
Male
Medical research
Middle Aged
Osteoarthritis
Pathogenesis
Patients
Peripheral blood
Polymorphism, Single Nucleotide
Protein-arginine deiminase
Protein-Arginine Deiminases
Proteins
Rheumatoid arthritis
Rheumatoid factor
Risk factors
Single nucleotide polymorphisms
Single-nucleotide polymorphism
Spondylitis
Studies
Synovial Membrane - metabolism
Tissues
title PADI2 is significantly associated with rheumatoid arthritis
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