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別タイトル
多発性骨髄炎母子例で同定したSTAT1新規ヘテロ接合性遺伝子変異Y701Cとその機能解析
著者
平田 修
NDC
医学
抄録(英)
Heterozygosity for dominant-negative STAT1 mutations underlies autosomal dominant Mendelian susceptibility to mycobacterial diseases. Mutations conferring Mendelian susceptibility to mycobacterial diseases have been identified in the regions of the STAT1 gene encoding the tail segment, DNA-binding domain and SH2 domain. We describe here a new heterozygous mutation, Y701C, in a Japanese two-generation multiplex kindred with autosomal dominant Mendelian susceptibility to mycobacterial diseases. This mutation affects precisely the canonical STAT1 tyrosine phosphorylation site. The Y701C STAT1 protein is produced normally, but its phosphorylation is abolished, resulting in a loss-of-function for STAT1-dependent cellular responses to IFN-γ or IFN-α. In the patient's cells, the allele is dominant-negative for gamma-activated factor-mediated responses to IFN-γ, but not for IFN-stimulated gene factor-3-mediated responses to IFN-α/β, accounting for the clinical phenotype of Mendelian susceptibility to mycobacterial diseases without severe viral diseases. Interestingly, both patients displayed multifocal osteomyelitis, which is often seen in Mendelian susceptibility to mycobacterial diseases patients with autosomal dominant partial IFN-γR1 deficiency. Multifocal osteomyelitis should thus prompt investigations of both STAT1 and IFN-γR1. This experiment of Nature also confirms the essential role of tyrosine 701 in human STAT1 activity in natura.
内容記述
This study was supported, in part, by Grants in Aid for Scientific Research from the Japan Society for the Promotion of Science [22591161 to M.K.], and by Research on Measures for Intractable Diseases funding from the Japanese Ministry of Health, Labor and Welfare [H22-Nanchi-ippan-078 to M.K.]. This study was also supported, in part, by the Rockefeller University and grants from the National Center for Research Resources, and the National Center for Advancing Sciences (NCATS), National Institutes of Health (NIH) grant number 8UL1TR000043, NIH grant number R01AI089970, and the St. Giles Foundation. S.C. was supported by the AXA Research Fund and X-F.K. by the Stony Wold-Herbert Fund.
作成年月日
2014-11-21
言語
英語
NII資源タイプ
学位論文
広大資料タイプ
学位論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
ETD
権利情報
Copyright(c) by Author
関連情報(references)
Osamu Hirata, Satoshi Okada, Miyuki Tsumura, Reiko Kagawa, Mizuka Miki, Hiroshi Kawaguchi, Kazuhiro Nakamura, Stephanie Boisson-Dupuis, Jean-Laurent Casanova, Yoshihiro Takihara and Masao Kobayashi; Heterozygosity for the Y701C STAT1 mutation in a multiplex kindred with multifocal osteomyelitis; Haematologica The Hematology Journal, October 2013 98: 1641-1649 (doi: 10.3324/haematol.2013.083741)
関連情報URL(references)
http://dx.doi.org/10.3324/haematol.2013.083741
学位記番号
甲第6198号
授与大学
広島大学(Hiroshima University)
学位名
博士(医学)
学位名の英名
Philosophy in Medical Science
学位の種類の英名
doctoral
学位授与年月日
2013-05-23
部局名
医歯薬学総合研究科