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1
2019 - 01 - 07
2019年1月7日 讯 /生物谷BIOON/ --诱发癌症有很多遗传原因,比如有些突变会遗传自父母,而其它则是后天获得性的突变,比如因外界因素或DNA复制的错误导致等,大规模的基因组测序在识别因体细胞突变所诱发的癌症上取得了一系列研究成果,但这种技术却无法有效识别因遗传性突变所诱发的癌症,而且识别这些遗传突变的主要来源仍然是基于家族性的研究。图片来源:iran-daily.com近日,一项刊登在国际杂志Nature Communications上的研究报告中,来自巴塞罗那基因组研究中心的科学家们通过研究开发了一种新型的统计学方法,其能够从肿瘤测序数据中鉴别出癌症易感性基因;该方法使用了一种古老的想法,即癌基因通常需要“两次击打”(two hits)才能够致癌,研究者表示,这种方法能帮助他们从当前癌症基因组数据库中系统性地鉴别出相关的基因。研究者将这种统计学方法命名为“ALFRED”,目前该技术已经鉴别出了13个候选的癌症易感性基因,其中10个基因都是此前并未发现的;Ben Lehner博士说道,我们对30种不同类型的肿瘤患者进行研究,将这种方法应用于1万多名患者的基因组序列中,最终鉴别出了已知的和一些新型的可能性癌症易感基因,这些基因有可能会诱发一定的患癌风险。研究者指出,新型的癌症易感基因或许在多种类型癌症的发生上扮演着关键角色,比如,其与14%的卵巢肿瘤、1%的乳腺癌等癌症直接...
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2019 - 05 - 27
5月24日,记者从中国农业科学院科研进展通报会上获悉,由中国农业科学院哈尔滨兽医研究所(以下称哈兽研)自主研发的非洲猪瘟疫苗取得了阶段性成果,实验室研究结果表明,具有良好的生物安全性和免疫保护效果。非洲猪瘟疫苗科研攻关负责人介绍,目前在非洲猪瘟疫苗创制阶段主要取得五项进展:一是分离我国第一株非洲猪瘟病毒。建立了病毒细胞分离及培养系统和动物感染模型,对其感染性、致病力和传播能力等生物学特性进行了较为系统的研究,并揭示了我国非洲猪瘟流行毒株的基因组特点和进化关系。二是创制了非洲猪瘟候选疫苗,实验室阶段研究证明其中两个候选疫苗株具有良好的生物安全性和免疫保护效果。三是两种候选疫苗株体外和体内遗传稳定性强。分别将两种候选疫苗株在体外原代细胞中连续传代,其生物学特性及基因组序列无明显改变,猪体内连续传代,也未发现明显毒力返强现象。四是明确了最小保护接种剂量,证明大剂量和重复剂量接种安全。五是临床前中试产品工艺研究初步完成。目前已建立两种候选疫苗的生产种子库,初步完成了疫苗生产种子批纯净性及外源病毒检验,初步优化了候选疫苗的细胞培养及冻干工艺。非洲猪瘟疫情发生后,党中央、国务院高度重视疫情防控科研攻关。中国农科院科技局局长任天志介绍,按照农业农村部党组统一部署,中国农科院将非洲猪瘟防控作为服务国家战略需求的重大科研攻关任务,集聚优势资源,第一时间组建非洲猪瘟防控科技攻关项目组,以哈尔滨兽医研究...
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2019 - 11 - 08
“5年后的今天,他们中将只剩下3名幸存者。”在谈到不久前刚刚接触过的100名胶质母细胞瘤(GBM)新患者时,Howard Fine博士语气很低沉,也透着几许无奈。作为威尔康奈尔医学院(Weill Cornell Medicine)的一名肿瘤学家,从医30年来,Howard Fine博士曾治疗过不下两万名GBM患者,不过,最终的结果却很扎心——“你现在很难再看到这些人了,因为他们基本上都死了。”Howard Fine博士所经历的,正是GBM在现实生活中的真实写照。神经胶质瘤是最常见的恶性原发性脑瘤,占所有原发性脑瘤的近四分之一,占所有恶性肿瘤的四分之三;而GBM又是最常见、最具侵袭性的胶质瘤类型,占所有胶质瘤的一半以上,仅在美国,每年就有约1.2万个新发病例。GBM是一个“致命杀手”,一旦被确诊,留给患者的时间平均只剩下15个月左右。GBM如此冷酷无情,自然惹得天怒人怨、人人喊打,不过,一个非常尴尬的事实却是:在与它的交锋中,医学界推出的各种手段胜绩寥寥,一种 “有心杀贼,无力回天”的感觉油然而生。面对GBM的嚣张气焰,专注于开发创新癌症疗法的DelMar Pharmaceuticals公司“明知山有虎,偏向虎山行”,开发出了一种对抗GBM的有力武器——VAL-083。接下来,DelMar Pharmaceuticals总裁兼首席执行官Saiid Zarrabian先生将为我们讲述V...
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型号:
时间: 2019 - 04 - 15
描述This achromat objective is ideal for general applications. This is a coverslip-corrected objective that is optimized for imaging through #1.5 coverslips. All EVOS® objectives offer outstanding optical performance from visible light to near infrared light. The extensive choice of objectives satisfies needs across the spectrum of magnifications and optical specifications.Additional characteristics of this EVOS® objective:• Magnification: 50X• Numerical Aperture: 0.95• Working Distance:...
型号:
时间: 2019 - 04 - 15
描述The EVOS M7000 Imaging System is a high-performance, fully automated, inverted, multi-channel fluorescence and transmitted light imaging system. It was developed to meet today’s expectations for image quality, user interface interactions, data generation speed and flexibility, and end-user value. The powerful and time-saving acquisition tools with enhanced autofocus algorithms and automated routines for microwell plate assays, time-lapse live cell imaging, area scanning in time lapse and Z-sta...
型号:
时间: 2019 - 04 - 15
描述The EVOS® FL Imaging System is a fully integrated, digital, inverted imaging system for four-color fluorescence and transmitted-light applications. It is powerful, yet easy-to-use and delivers high-definition images with exceptional convenience. The unique light cubes, sensitive camera, and precision-engineered optical system make the EVOS® FL system ideal for both demanding and routine fluorescence imaging applications.The EVOS® FL Imaging System offers you these important ad...
型号:
时间: 2019 - 04 - 15
描述The EVOS® Onstage Master Plate is part of the EVOS® Onstage Incubator and holds the EVOS® Onstage Vessel Holder. The EVOS® Onstage Incubator is an environmental chamber designed specifically for use with the EVOS® FL Auto Imaging System. This master plate plus vessel holder design, with vessel holders available that accommodate various types of cell culture vessels, provides flexibility in your approach to extended time-lapse imaging experiments under precisely co...
型号:
时间: 2019 - 04 - 15
描述EVOS® Onstage vessel holders maximize your choice of cell culture vessels when conducting time-lapse imaging experiments using the EVOS® FL Auto Imaging System equipped with an EVOS® Onstage Incubator. EVOS® Onstage vessel holders allow a perfect fit of your micro-well plates or cell culture flasks/dishes to the master plate of the EVOS® Onstage Incubator for increased precision in sample alignment. This particular vessel holder accommodates two 25-mL T-flasks. With ...
型号:
时间: 2019 - 04 - 15
描述EVOS® Onstage vessel holders maximize your choice of cell culture vessels when conducting time-lapse imaging experiments using the EVOS® FL Auto Imaging System equipped with an EVOS® Onstage Incubator. EVOS® Onstage vessel holders allow a perfect fit of your micro-well plates or cell culture flasks/dishes to the master plate of the EVOS® Onstage Incubator for increased precision in sample alignment. This particular vessel holder accommodates multi-well plates (dimensi...
型号:
时间: 2019 - 04 - 15
描述EVOS® vessel holders allow a perfect fit of your microscope slide, cell culture flask or dish, or micro-well plate to the stage of the EVOS® imaging systems for increased precision in sample alignment. This particular vessel holder securely holds two 25 x 75 mm standard or chamber microscope slides and is specific for the automated stage of the EVOS® FL Auto Imaging System. It is just one of many easy-to-change vessel holders and stage plates available for this instrument plat...
型号:
时间: 2019 - 04 - 15
描述EVOS® vessel holders allow a perfect fit of your microscope slide, cell culture flask or dish, or micro-well plate to the stage of the EVOS® imaging systems for increased precision in sample alignment. This particular vessel holder accommodates one Greiner/BD T-25 flask. It is just one of many easy-to-change vessel holders and stage plates available for this instrument platform. With a snug and secure fit, yet readily switched, these accessories make imaging samples in a range of ...
型号:
时间: 2019 - 04 - 15
描述EVOS® vessel holders allow a perfect fit of your microscope slide, cell culture flask or dish, or micro-well plate to the stage of the EVOS® imaging systems for increased precision in sample alignment. This particular vessel holder has a 25.4 mm opening and accommodates most vessel types. It is just one of many easy-to-change vessel holders and stage plates available for this instrument platform. With a snug and secure fit, yet readily switched, these accessories make imaging samp...
型号:
时间: 2019 - 04 - 15
描述EVOS® vessel holders allow a perfect fit of your microscope slide, cell culture flask or dish, or micro-well plate to the stage of the EVOS® imaging systems for increased precision in sample alignment. This particular vessel holder accommodates one Greiner T-75 flask. It is just one of many easy-to-change vessel holders and stage plates available for this instrument platform. With a snug and secure fit, yet readily switched, these accessories make imaging samples in a range of ves...
型号:
时间: 2019 - 04 - 15
描述EVOS® vessel holders allow a perfect fit of your microscope slide, cell culture flask or dish, or micro-well plate to the stage of the EVOS® imaging systems for increased precision in sample alignment. This particular vessel holder accommodates a hemocytometer. It is just one of many easy-to-change vessel holders and stage plates available for this instrument platform. With a snug and secure fit, yet readily switched, these accessories make imaging samples in a range of vessel hol...
型号:
时间: 2019 - 04 - 15
描述EVOS® vessel holders allow a perfect fit of your microscope slide, cell culture flask or dish, or micro-well plate to the stage of the EVOS® imaging systems for increased precision in sample alignment. This particular vessel holder accommodates one Nunc® T-75 flask. It is just one of many easy-to-change vessel holders and stage plates available for this instrument platform. With a snug and secure fit, yet readily switched, these accessories make imaging samples in a range of ...
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