對超過400個乳腺癌、肺癌,、卵巢癌和前列腺癌樣品所做的一項大規(guī)模遺傳分析,,識別出了數(shù)千個與癌癥相關(guān)的突變。Kan等人分析了來自癌癥患者的DNA,,識別出了涉及1507個編碼基因的2576個體突變,。
在這些突變中,77個被認(rèn)為是顯著的突變,,說明它們可能具有致病作用,,包括蛋白激酶、G蛋白耦合的受體和其他潛在治療目標(biāo),。(生物谷Bioon.com)
生物谷近期特別推薦會議:
2010細(xì)胞治療研究進(jìn)展與臨床應(yīng)用前沿研討會 www.Cell-therapies.net 2010年9月23日-25日天津召開
第一屆腫瘤基礎(chǔ)和轉(zhuǎn)化醫(yī)學(xué)國際研討會 www.cancerasia.org 2010年10月12日-10月15日上海召開
生物谷推薦原文出處:
Nature doi:10.1038/nature09208
Diverse somatic mutation patterns and pathway alterations in human cancers
Zhengyan Kan,Bijay S. Jaiswal,Jeremy Stinson,Vasantharajan Janakiraman,Deepali Bhatt,Howard M. Stern,Peng Yue,Peter M. Haverty,Richard Bourgon,Jianbiao Zheng,Martin Moorhead,Subhra Chaudhuri,Lynn P. Tomsho,Brock A. Peters,Kanan Pujara,Shaun Cordes,David P. Davis,Victoria E. H. Carlton,Wenlin Yuan,Li Li,Weiru Wang,Charles Eigenbrot,Joshua S. Kaminker,David A. Eberhard,Paul Waring,Stephan C. Schuster,Zora Modrusan,Zemin Zhang,David Stokoe,Frederic J. de Sauvage, Malek Faham & Somasekar Seshagiri et al.
The systematic characterization of somatic mutations in cancer genomes is essential for understanding the disease and for developing targeted therapeutics1. Here we report the identification of 2,576 somatic mutations across ~1,800?megabases of DNA representing 1,507 coding genes from 441 tumours comprising breast, lung, ovarian and prostate cancer types and subtypes. We found that mutation rates and the sets of mutated genes varied substantially across tumour types and subtypes. Statistical analysis identified 77 significantly mutated genes including protein kinases, G-protein-coupled receptors such as GRM8, BAI3, AGTRL1 (also called APLNR) and LPHN3, and other druggable targets. Integrated analysis of somatic mutations and copy number alterations identified another 35 significantly altered genes including GNAS, indicating an expanded role for gα subunits in multiple cancer types. Furthermore, our experimental analyses demonstrate the functional roles of mutant GNAO1 (a Gα subunit) and mutant MAP2K4 (a member of the JNK signalling pathway) in oncogenesis. Our study provides an overview of the mutational spectra across major human cancers and identifies several potential therapeutic targets.