Leukemia:中国科学家研究发现可杀伤白血病细胞的新策略

2018-09-18 蔺娟 新华社

记者从西安交通大学第二附属医院生物诊断治疗国家地方联合工程研究中心获悉,该中心孔光耀教授团队研究发现了一种可以杀伤骨髓增殖性肿瘤细胞的新策略,或将为该类髓系白血病患者的治疗带来福音。

记者从西安交通大学第二附属医院生物诊断治疗国家地方联合工程研究中心获悉,该中心孔光耀教授团队研究发现了一种可以杀伤骨髓增殖性肿瘤细胞的新策略,或将为该类髓系白血病患者的治疗带来福音。

孔光耀教授团队日前在白血病领域权威期刊《白血病》(Leukemia)上在线发表题为《在骨髓增殖性肿瘤中下调Notch信号通路可以抵消KrasG12D突变体引起的ERK信号通路激活及氧化磷酸化作用》的研究成果。该研究表明,与急性髓系白血病不同,Notch信号通路在骨髓增殖性肿瘤中主要发挥癌基因的作用。进一步的机制研究发现,抑制Notch信号通路可以抑制ERK信号通路的激活,还可以抑制白血病细胞的氧化磷酸化。更重要的是,同时抑制ERK信号通路和氧化磷酸化对白血病细胞具有更好的靶向杀伤作用,这可能是一种骨髓增殖性肿瘤靶向治疗的新策略。

据介绍,白血病在我国恶性肿瘤死亡率中居第6位(男性)和第8位(女性),在儿童及35岁以下成人中居第1位。孔光耀说,骨髓增殖性肿瘤是一类起源于造血干细胞的恶性血液肿瘤,目前尚缺乏有效的靶向治疗策略。研究人员发现,Notch信号通路参与多种肿瘤的发生发展,但其在不同肿瘤中的作用具有明显的组织特异性和环境依赖性。前期研究显示,Notch信号通路在急性髓系白血病中具有抑癌基因的作用。

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