テラワキ セイゴウ
Seigo Terawaki
寺脇 正剛 所属 川崎医科大学 医学部 基礎医学 分子遺伝医学 職種 特任講師 |
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論文種別 | 原著 |
言語種別 | 英語 |
査読の有無 | 査読あり |
表題 | Janus Kinase Inhibitor Tofacitinib Shows Potent Efficacy in a Mouse Model of Autoimmune Lymphoproliferative Syndrome (ALPS). |
掲載誌名 | 正式名:Journal of clinical immunology 略 称:J Clin Immunol ISSNコード:15732592/02719142 |
掲載区分 | 国外 |
巻・号・頁 | 35(7),pp.661-667 |
著者・共著者 | Yokoyama Seiji, Perera Pin-Yu, Terawaki Seigo, Watanabe Nobumasa, Kaminuma Osamu, Waldmann Thomas A, Hiroi Takachika, Perera Liyanage P |
発行年月 | 2015/10 |
概要 | PURPOSE:Autoimmune lymphoproliferative syndrome (ALPS) is a non-malignant genetic disorder of lymphocyte homeostasis with defective Fas-mediated apoptosis. Current therapies for ALPS primarily target autoimmune manifestations with non-specific immune suppressants with variable success thus highlighting the need for better therapeutics for this disorder.METHODS:The spectrum of clinical manifestations of ALPS is mirrored by MRL/lpr mice that carry a loss of function mutation in the Fas gene and have proven to be a valuable model in predicting the efficacy of several therapeutics that are front-line modalities for the treatment of ALPS. We evaluated the potential efficacy of tofacitinib, an orally active, pan-JAK inhibitor currently approved for rheumatoid arthritis as a single agent modality against ALPS using MRL/lpr mice.RESULTS:We demonstrate that a 42-day course of tofacitinib therapy leads to a lasting reversal of lymphadenopathy and autoimmune manifestations in the treated MRL/lpr mice, Specifically, in treated mice the peripheral blood white blood cell counts were reversed to near normal levels with almost a 50 % reduction in the TCRαβ(+)CD4(-)CD8(-)T lymphocyte numbers that coincided with a parallel increase in CD8(+) T cells without a demonstrable effect on CD4(+) lymphocytes including FoxP3(+) regulatory T cells. The elevated plasma IgG and IgA levels were also drastically lowered along with a significant reduction in plasmablasts and plasmacytes in the spleen.CONCLUSION:On the basis of these results, it is likely that tofacitinib would prove to be a potent single agent therapeutic modality capable of ameliorating both offending lymphadenopathy as well as autoimmunity in ALPS patients. |
DOI | 10.1007/s10875-015-0203-z |
PMID | 26453583 |