Cell Reports:打击幽门螺旋杆菌诱发胃癌的新靶标

2014-07-07 佚名 不详

来自新加坡癌症科学研究所科学家发现,一种名为IL23A蛋白是胃防御导致胃癌的细菌感染的一部分。这一发现有可能被用来对抗致命疾病。 Yoshiaki Ito教授带领下的研究小组证实胃细胞生成IL23A需要抑癌基因--RUNX3,后者在胃癌中是经常沉默。相关研究论文发表在Cell Reports on杂志上。 每年大约有740,000人死于胃癌,目前胃癌已知的主要触发因素是幽门螺旋杆菌感染。针

来自新加坡癌症科学研究所科学家发现,一种名为IL23A蛋白是胃防御导致胃癌的细菌感染的一部分。这一发现有可能被用来对抗致命疾病。

Yoshiaki Ito教授带领下的研究小组证实胃细胞生成IL23A需要抑癌基因--RUNX3,后者在胃癌中是经常沉默。相关研究论文发表在Cell Reports on杂志上。

每年大约有740,000人死于胃癌,目前胃癌已知的主要触发因素是幽门螺旋杆菌感染。针对这种细菌的一个漫长的战斗往往会导致胃的持续性炎症,这是一个危险的致癌因素。因此,了解和加强胃细胞自然防御是预防胃癌的关键一步。

在这项研究中,研究人员发现通常只由白血细胞产生的蛋白质IL23A,胃细胞暴露在幽门螺旋杆菌后也能释放。这表明IL23A是针对细菌感染,胃防御的一部分。同时,他们发现,胃细胞生成IL23A需要RUNX3,RUNX3是一种肿瘤抑制基因,该基因在胃癌经常沉默。

RUNX3基因参与细菌引起的炎症和感染,当胃细胞失去RUNX3,胃细胞应对幽门螺旋杆菌感染的能力有缺陷,使胃容易受到这种致癌细菌侵害。

Ito教授说,我们一直在研究胃癌RUNX3基因的失活。我们最新的研究结果表明,RUNX3失活的一个重要后果是免疫力受损。在研究的下一阶段,该团队将重点放在确定他们发现的IL23A复合体的功能上,以作为打击幽门螺旋杆菌诱发胃癌整体战略的一部分,最终开发防治胃癌的新治疗方法。

原始出处

Yit Teng Hor,Dominic Chih-Cheng Voon,Jason Kin Wai Koo, Huajing Wang, Wen Min Lau, Hassan Ashktorab,Shing Leng Chan,Yoshiaki Ito.A Role for RUNX3 in Inflammation-Induced Expression of IL23A in Gastric Epithelial Cells.Cell reports. July 2014

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    2015-04-02 维他命
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    2014-07-09 zhaojie88
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    2014-07-07 sunxiaofei4457

    IL23A蛋白,期待胃癌的新治疗方法!

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