Identification of the functionally responsible allele for protection against multiple autoimmune rheumatic diseases using HLA region sequencing
Project/Area Number |
17K09967
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Collagenous pathology/Allergology
|
Research Institution | University of Tsukuba |
Principal Investigator |
|
Co-Investigator(Kenkyū-buntansha) |
針谷 正祥 東京女子医科大学, 医学部, 教授 (20238207)
|
Project Period (FY) |
2017-04-01 – 2020-03-31
|
Project Status |
Completed (Fiscal Year 2019)
|
Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
|
Keywords | HLA-class II / 多型 / 疾患感受性 / 疾患抵抗性 / ANCA関連血管炎 / HLA class II / 疾患感受性遺伝子 / 疾患抵抗性遺伝子 / 一塩基バリアント / eQTL / 主要組織適合性遺伝子複合体 / HLA / 疾患関連遺伝子 / シークエンス / 膠原病 / ゲノム |
Outline of Final Research Achievements |
We previously identified association of HLA-DRB1*13:02 with protection against, and that of HLA-DRB1*09:01-DQB1*03:03 haplotype with susceptibility to, multiple autoimmune diseases including MPO-ANCA positive vasculitis in the Japanese population. In this study, we made an attempt to identify the causal variants which can account for the genetic association of these haplotypes. As for the protective association, the role for HLA-DRB1*13:02 itself was supported. With respect to the predispositional association, novel variants located in the upstream region of HLA-DRA and are in linkage disequilibrium with DRB1*09:01 were suggested to play an independent role. These variants were shown to be associated with expression level of HLA-DQA1 and DQB1 by eQTL analysis. These results imply that multiple variants with an independent contribution are carried by the DRB1*09:01 haplotype, some of which may be associated by a mechanism other than the antigenic peptide specificity.
|
Academic Significance and Societal Importance of the Research Achievements |
HLAは多くの免疫関連疾患において重要な疾患感受性あるいは抵抗性遺伝子であるが、広範囲にわたる連鎖不平衡のために、病因的意義を有するバリアントが特定されておらず、分子機構は未解明である。本研究では、日本人集団においてANCA関連血管炎をはじめとする複数の免疫疾患の疾患抵抗性、疾患感受性にそれぞれ関連するHLA-DRB1*13:02、DRB1*09:01-DQB1*03:03ハプロタイプにおいて、病因的であるバリアントを探索した。これは、学術的にはHLAと疾患の関連の分子機構の解明に、社会的には日本人集団において有用性の高い複数の免疫疾患に対する創薬の分子標的の同定につながる知見と考えられる。
|
Report
(4 results)
Research Products
(9 results)
-
-
[Presentation] HLA-DRA上流領域バリアントとMPO-ANCA陽性血管炎の関連2020
Author(s)
川崎綾, 佐田憲映, 平野史生, 小林茂人, 長坂憲治, 杉原毅彦, 小野伸之, 藤本隆, 草生真規雄, 田村直人, 山縣邦弘 , 住田孝之, 尾崎承一, 橋本博史, 槇野博史, 有村義宏 , 針谷正祥, 土屋尚之
Organizer
第64回日本リウマチ学会総会・学術集会
Related Report
-
-
[Presentation] 日本人ANCA関連血管炎のHLA-class II: ヨーロッパ系集団との比較.2018
Author(s)
川崎綾, 平野史生, 佐田憲映, 小林茂人, 山田秀裕, 古川宏, 長坂憲治, 杉原毅彦, 山縣邦弘, 住田孝之, 當間重人, 尾崎承一, 橋本博史, 槇野博史, 有村義宏, 針谷正祥,土屋尚之.
Organizer
第62回日本リウマチ学会総会・学術集会
Related Report
-
[Presentation] ANCA関連血管炎における間質性肺疾患とHLA Class II アリルの関連.2018
Author(s)
川崎綾, 平野史生, 佐田憲映, 小林茂人, 山田秀裕, 古川宏, 長坂憲治, 杉原毅彦, 山縣邦弘, 住田孝之, 當間重人, 尾崎承一, 橋本博史, 槇野博史, 有村義宏, 針谷正祥, 土屋尚之.
Organizer
第63回日本人類遺伝学会
Related Report
-
[Presentation] Association of HLA Class II Alleles with Relapse and Interstitial Lung Disease in Myeloperoxidase (MPO)-ANCA Positive Vasculitis in a Japanese Population.2018
Author(s)
Kawasaki A, Sada K-e, Hirano F, Kobayashi S, Yamada H, Furukawa H, Nagaksaka K, Sugihara T, Yamagata K, Sumida T, Tohma S, Ozaki S, Hshimoto H, Makino H, Arimura Y, Harigai M, Tsuchiya N.
Organizer
2018 American College of Rheumatology Annual Scientific Meeting
Related Report
Int'l Joint Research
-
[Presentation] HLA-class II Associations with ANCA-associated vasculitis in the Japanese population: Different features from European populations.2017
Author(s)
Kawasaki A, Hirano F, Sada K-e, Kobayashi S, Yamada H, Furukawa H, Nagasaka K, Sugihara T, Yamagta K, Sumida T, Tohma S, Ozaki S, Matsuo S, Hashimoto H, Makino H, Arimura Y, Harigai M, Tsuchiya N.
Organizer
2017 American College of Rheumatology Annual Scientific Meeting.
Related Report
Int'l Joint Research
-
-