蛋白质鉴定为胰腺癌的潜在目标成药
MD安德森新闻Release March 28, 2017
称为A蛋白质精氨酸甲基1(PRMT1)可以是胰腺导管腺癌(PDAC)的潜在治疗靶标,胰癌的最常见的类型,并与小于10%,五年存活率的最致命的一个。PRMT1参与许多遗传过程包括基因的转录,DNA修复和信令。
“我们的研究已经确定和验证首次精氨酸甲基转移酶如PDAC一个新的遗传漏洞”,说朱利奥Draetta,医学博士,博士,教授基因组医学and director of学院应用科学癌症(IACS)在得克萨斯大学MD安德森癌症中心的大学。“这些研究结果强烈建议对PRMT1在PDAC发展中的作用,并阐明朝疗法的发展,为病人的创新解决方案迫切需要的路径。”
Results from the study will be reported April 3 at theannual meetingof theAmerican Association for Cancer Research在华盛顿特区
不同的治疗方案都未能改善PDAC患者生存率,驾驶发现肿瘤维持所必需的成药目标的迫切需要。Draetta的研究小组开发出一种名为患者为主体内细菌毒性的优化处理(PILOT),这种技术能够在患者来源的肿瘤肿瘤漏洞的系统识别体内平台。通过试点,他们发现PDAC小说后生驱动程序,包括在港对p53的背景KRAS突变的肿瘤PRMT1。KRAS和p53往往与癌症相关的基因。
“通过后生监管机构的这一评估,我们确定PRMT1在这些患者来源的肿瘤一个得分最高的‘重灾区’,”弗吉尼亚朱利安尼,博士,高级研究科学家,IACS说。乐动体育LDsports中国“这种新颖的依赖性在多个患者来源的胰模型随后验证。”
研究小组证实人口、难民和移民事务局的基因“击倒”T1 significantly impaired PDAC cell growth in vitro through use of genetic editing tools, including CRISPR and small hairpin RNA (shRNA). This correlated with a global reduction in arginine methylation, which controls multiple cellular processes, including DNA replication and DNA repair.
“We also confirmed a role in PDAC tumor maintenance as inhibition of PRMT1 in patient-derived mouse models significantly inhibited tumor growth and extended survival,” said Giuliani. “These data suggest that small molecule inhibition of PRMT1 could be an impactful therapeutic strategy in pancreas cancer.”
The teams at MD Anderson’s andCenter for Co-Clinical Trialsare using the PILOT platform to investigate novel vulnerabilities across tumor subtypes with the aim of identifying targets for therapeutic development. PRMT1 is one of several epigenetic dependencies that have been identified using this approach.
The study was supported by philanthropic contributions to MD Anderson’sMoon Shots Program™一d the Sheikh Ahmed Bin Zayed Al Nahyan Center for Pancreatic Cancer.
IACS研究小组成员包括Bhavatarini Vangamudi,博士,埃里卡铃木博士,梅雷迪思·米勒博士,邱刘义,博士,亚历山德罗卡鲁戈,博士,克里斯托弗·布里斯托,博士,高广博士,京汉,博士,雨亭孙,博士,Ningping丰博士,爱德华·常博士约瑟夫Marszalek,博士。D., Jeffrey Kovacs, Ph.D., Maria Emilia Di Francesco, Ph.D., Carlo Toniatti, M.D., Ph.D., Timothy Heffernan, Ph.D., and Philip Jones, Ph.D.