Nat Genet:中美专家首次发现脑干胶质瘤特异基因突变

2014-06-05 新华 新华网

首都医科大学附属北京天坛医院副院长、神经外科张力伟教授与美国杜克大学阎海教授联合,将临床医学研究优势转化为基础研究成果,在国际上首次发现脑干胶质瘤中特异的基因突变。 这是“全基因组外显子测序在脑干胶质瘤发生机制及治疗分子靶点研究”项目的重大突破性成果,已于6月1日在线发表于国际权威期刊《自然遗传》。 脑干是身体各部位神经与大脑之间的必经之路,是负责心跳、呼吸、循环、消化和意识等功能的关键部位之一

首都医科大学附属北京天坛医院副院长、神经外科张力伟教授与美国杜克大学阎海教授联合,将临床医学研究优势转化为基础研究成果,在国际上首次发现脑干胶质瘤中特异的基因突变。 这是“全基因组外显子测序在脑干胶质瘤发生机制及治疗分子靶点研究”项目的重大突破性成果,已于6月1日在线发表于国际权威期刊《自然遗传》。

脑干是身体各部位神经与大脑之间的必经之路,是负责心跳、呼吸、循环、消化和意识等功能的关键部位之一。由于周边组织的重要性和脆弱性,历史上脑干胶质瘤是手术禁区。

张力伟领导的团队在脑干胶质瘤手术领域具国际领先地位,其手术数量最大、样品种类和数量均居世界首位。他们的临床研究发现,脑干胶质瘤与大脑半球、丘脑等常见部位胶质瘤的生物特性差异明显,术后放疗和化疗均难以控制肿瘤生长,预后甚差,平均生存时间不到2年。

张力伟与阎海在联合研究过程中,发现脑干胶质瘤中特异的PPM1D基因突变。该突变与同时观察到的IDH1基因突变存在于脑干胶质瘤,却未在丘脑胶质瘤中出现,这对两种肿瘤的生物差异性作出了科学解释。

张力伟说,PPM1D突变不仅促进癌细胞的生长,而且能阻止癌细胞的灭亡,因此阻断该突变功能有可能阻止肿瘤细胞生长,这为启动脑干胶质瘤新型靶点药物研究提供了依据。

这一研究成果还使得脑干胶质瘤分型方法有望由影像学分型向基因分型的过渡,并可尝试在分子病理指导下的综合治疗。

原始出处:

Zhang L1, Chen LH2, Wan H3, Yang R2, Wang Z4, Feng J5, Yang S6, Jones S7, Wang S8, Zhou W4, Zhu H4, Killela PJ4, Zhang J9, Wu Z9, Li G5, Hao S9, Wang Y9, Webb JB4, Friedman HS4, Friedman AH4, McLendon RE4, He Y4, Reitman ZJ4, Bigner DD4, Yan H4.Exome sequencing identifies somatic gain-of-function PPM1D mutations in brainstem gliomas.Nat Genet. 2014 Jun 1. doi: 10.1038/ng.2995. [Epub ahead of print]


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    2014-08-06 cy0324
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    2014-09-04 canlab
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    2015-01-16 liye789132251