Immunity:一种人体蛋白质有助清除结核杆菌

2014-09-04 蓝建中 新华网

日本九州大学的一个研究小组近日在美国《免疫》杂志网络版上报告说,他们发现人体免疫细胞中的一种蛋白质,能有助于免疫细胞清除结核杆菌。这一发现有望促进结核病治疗药物研发。 这种蛋白质名为Dectin-2,位于人体免疫细胞内,具有与糖结合的特性。九州大学生物调控医学研究所教授山崎晶领导的研究小组发现,Dectin-2能识别结核杆菌中最具特征的一种糖脂——脂阿拉伯甘露聚糖,并由此激活免疫细胞,进而清

日本九州大学的一个研究小组近日在美国《免疫》杂志网络版上报告说,他们发现人体免疫细胞中的一种蛋白质,能有助于免疫细胞清除结核杆菌。这一发现有望促进结核病治疗药物研发。

这种蛋白质名为Dectin-2,位于人体免疫细胞内,具有与糖结合的特性。九州大学生物调控医学研究所教授山崎晶领导的研究小组发现,Dectin-2能识别结核杆菌中最具特征的一种糖脂——脂阿拉伯甘露聚糖,并由此激活免疫细胞,进而清除受感染细胞内的结核杆菌。

在实验中,研究小组发现实验鼠的免疫细胞如果不含Dectin-2蛋白质,就不会对结核杆菌产生反应。

山崎晶表示,这种蛋白质本来就存在于人体内,如果以这种蛋白质为基础研发结核病治疗新药,有望对已经产生耐药性的结核杆菌发挥作用。

结核杆菌是引起人和动物结核病的病原菌,可侵害全身各器官,以肺结核最为多见。结核病至今仍为主要传染病之一,全球三分之一人口面临结核病威胁。据世界卫生组织调查,2012年全球死于结核病的患者约有130万人。

原始出处:

Akiko Yonekawa, Shinobu Saijo, Yoshihiko Hoshino, Yasunobu Miyake, Eri Ishikawa, Maho Suzukawa, Hiromasa Inoue, Masato Tanaka,Mitsutoshi Yoneyama, Masatsugu Oh-hora, Koichi Akashi, Sho Yamasaki.Dectin-2 Is a Direct Receptor for Mannose-Capped Lipoarabinomannan of Mycobacteria. Immunity, August 28, 2014; DOI: DOI:10.1016/j.immuni.2014.08.005

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