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礼来、阿斯利康不哭！阿尔茨海默（AD）就是个大坑！！
礼来、阿斯利康不哭！阿尔茨海默（AD）就是个大坑！！
2018 - 06 - 14
2018年6月13日讯 /生物谷BIOON/ --阿尔茨海默氏症（AD）一直是新药研发的重灾区，该领域研发失败率高达99.6%。过去几年，包括礼来、阿斯利康、强生、辉瑞、罗氏在内的制药巨头投资达数十亿美元之巨的多个单抗药物均在III期临床惨遭失败，为该领域的投资前景蒙上了厚厚的阴云。之后，另一个很有前途的新药类别——BACE抑制剂，成功取代抗体药物站在了AD研发的舞台中央。然而，BACE抑制剂似乎也不大可能打破魔咒，正在追随着单抗药物的步伐。去年情人节当天，BACE抑制剂领域的领头羊——默沙东宣布终止verubecestat治疗轻至中度AD的大型III期研究EPOCH（protocol 017）；今年情人节前一天，默沙东再次宣布终止verubecestat治疗前驱期AD的大型III期研究APECS(protocol 019)。这也意味着，verubecestat治疗AD的III期临床项目已完全终止。而2次公告时间均选在情人节，特别耐人寻味，默沙东似乎在述说着心中的苦楚和不舍，而这一点，一大票巨头们都深有感触：AD，AD，想说爱你，真的不易o(╥﹏╥)o！就在昨天，礼来和阿斯利康哥俩，手牵手沿着BACE国道，哭喊着朝默沙东奔去，原因竟然是——————————他们的BACE抑制剂也O-O-O-O-OVER了！！！根据公告，双方将终止lanabecestat的全球III期项目，包括lan...
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英国NHS批准了3款治疗甲状腺癌的药物！
英国NHS批准了3款治疗甲状腺癌的药物！
2019 - 04 - 04
英国国家医疗服务系统（NHS）近日批准了三种新的甲状腺癌疗法作为甲状腺癌的常规疗法。由国家健康和护理研究所（NICE）提出的推荐指南建议把cabozantinib（Cometriq）和索拉菲尼sorafenib（Nexavar）转移进癌症药物基金。被批准的第三种药物是乐伐替尼（Lenvatinib/Lenvima），过去这个药物仅仅在出于同情的情况下提供使用。英国癌症研究中心的高级政策顾问Rose Gray对这些决定感到高兴，他认为这对于病人而言是好消息。病人选择有限！Cabozantinib被推荐用于治疗无法进行手术治疗或者已经转移的甲状腺髓样癌。英国每年约有80例这种病人。Gray说临床结果显示Cabozantinib能够延缓癌症进展。这是仅有的治疗甲状腺髓样癌的两种药物之一。Lenvatinib和sorafenib被批准用于治疗手术或者放射性碘治疗无效的分化型甲状腺癌，这是最常见的种类。手术或者放射性碘治疗后，这两种药物是这些病人的唯二选择。每年英国约有200人能由于这两种药物获益。Lenvatinib和sorafenib比通常认为可以接受的效果差一点，但是在病人报道他们生活质量得到改善后，NICE批准了这两种药物。“NICE从一些病人口中听说了这些药物如何改善症状，这表明这些药物在癌症病人身上的价值。”Gray说道。NICE健康技术评估中心执行主任Mirella Marlo...
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“不限癌种“疗法的挑战和未来发展方向
“不限癌种“疗法的挑战和未来发展方向
2019 - 08 - 09
今日，美国FDA批准罗氏（Roche）公司开发的NTRK，ROS1和ALK抑制剂Rozlytrek（entrectinib）上市，治疗携带NTRK基因融合的实体瘤患者，以及携带ROS1基因突变的非小细胞肺癌患者。这也是美国FDA批准的第三款“不限癌种”的抗癌疗法。自从去年Loxo Oncology/拜耳（Bayer）公司联合开发的TRK抑制剂Vitrakvi（larotrectinib）获批以来。“不限癌种”抗癌疗法得到了广大业界人士和患者的关注。还有哪些“不限癌种“疗法即将问世？“不限癌种“的抗癌疗法发展的前景如何？今天的这篇文章里，药明康德内容团队将结合公开资料，与读者分享这些问题的答案。“不限癌种“疗法的理论基础和面对的挑战我们知道，基因突变是驱动正常细胞癌变的关键。近年来高通量测序技术的进步，让我们获得了许多对癌症背后的分子生物学机理的洞见。基于这些洞见，我们对癌症的分类不再局限于癌症起源的组织，而是基于肿瘤细胞携带的特定基因变异。这一基于分子生物学生物标志物的分类方法加快了靶向疗法的开发，而“不限癌种“的抗癌疗法可以说是靶向疗法中比较特别的一个分支。这些靶向疗法的靶点在起源于不同组织的多种癌症中存在，而且”不限癌种“疗法能够在多种癌症类型中表现出卓越的疗效。例如去年获批的Vitrakvi在携带NTRK基因融合的患者中能够达到81%的总缓解率。而刚刚获得FDA批准的Rozl...
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LIVE/DEAD™ Fixable Green Dead Cell Stain Kit, for 488 nm excitation
产品名称： LIVE/DEAD™ Fixable Green Dead Cell Stain Kit, for 488 nm excitation
型号：
时间： 2019 - 04 - 22
描述The LIVE/DEAD™ Fixable Green Dead Cell Stain Kit is used to determine the viability of cells prior to the fixation and permeabilization required for intracellular antibody staining or prior to elimination of biohazardous materials using formaldehyde fixation. This kit has been optimized and validated for use with a blue laser flow cytometer.• Stable—dyes are freeze dried in separate vials to maintain stability• Robust—staining pattern is the same before and after fixation• Bright signal—allows...
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Dead Cell Apoptosis Kit with Annexin V FITC and PI, for flow cytometry
产品名称： Dead Cell Apoptosis Kit with Annexin V FITC and PI, for flow cytometry
型号：
时间： 2019 - 04 - 18
描述This product detects the externalization of phosphatidylserine in apoptotic cells using recombinant annexin V conjugated to green-fluorescent FITC dye and dead cells using propidium iodide (PI). Propidium iodide stains necrotic cells with red fluorescence. After treatment with both probes, apoptotic cells show green fluorescence, dead cells show red and green fluorescence, and live cells show little or no fluorescence.
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SYTOX™ Green Nucleic Acid Stain - 5 mM Solution in DMSO
产品名称： SYTOX™ Green Nucleic Acid Stain - 5 mM Solution in DMSO
型号：
时间： 2019 - 04 - 18
描述SYTOX® Green nucleic acid stain is an excellent green-fluorescent nuclear and chromosome counterstain that is impermeant to live cells, making it a useful indicator of dead cells within a population.•  Impermeant to live cells•  Excitation/Emission: 504/523 nm•  Use with 488 Argon-ion laser•  Works with mammalian cells and both Gram-positive and Gram-negative bacteriaSimple Viability Determination SYTOX® Green allows quick determination of cell viability when usin...
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Premo™ FUCCI Cell Cycle Sensor (BacMam 2.0)
产品名称： Premo™ FUCCI Cell Cycle Sensor (BacMam 2.0)
型号：
时间： 2019 - 04 - 18
描述Premo™ FUCCI Cell Cycle Sensor is a fluorescent, two-color sensor of cell cycle progression and division in live cells. It allows accurate and sensitive cell cycle analysis of individual cells or a population of cells by fluorescence microscopy, flow cytometry, or high-content imaging.At 2 x 200 µL, this is a smaller pack size version (1/5 volume) of the popular full-size product and perfect for testing its performance in your system.The Premo™ FUCCI Cell Cycle Sensor is delivered by high...
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CountBright™ Absolute Counting Beads, for flow cytometry
产品名称： CountBright™ Absolute Counting Beads, for flow cytometry
型号：
时间： 2019 - 04 - 18
描述CountBright™ absolute counting beads are a calibrated suspension of microspheres that are brightly fluorescent across a wide range of excitation and emission wavelengths (UV to 635 nm excitation and 385-800 nm emission). CountBright™ absolute counting beads are mixed with the cell sample and assayed via flow cytometry. By comparing the ratio of bead events to cell events, absolute numbers of cells in the sample can be calculated. Because CountBright™ beads are mixed in the test sample, absolut...
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CellTrace™ CFSE Cell Proliferation Kit, for flow cytometry
产品名称： CellTrace™ CFSE Cell Proliferation Kit, for flow cytometry
型号：
时间： 2019 - 04 - 17
描述CellTrace™ CFSE Cell Proliferation Kit is used for in vitro and in vivo labeling of cells to trace multiple generations using dye dilution by flow cytometry.• Superior performance—bright, single-peak staining enables visualization of multiple generations• Long-term signal stability—well-retained in cells for several days post stain• Non-toxic—staining does not adversely effect cell health• Simple, robust staining protocolView a selection guide for all CellTrace™ Cell Proliferation Kits fo...
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CellTrace™ CFSE Cell Proliferation Kit - For Flow Cytometry
产品名称： CellTrace™ CFSE Cell Proliferation Kit - For Flow Cytometry
型号：
时间： 2019 - 04 - 17
描述CellTrace™ CFSE 细胞增殖试剂盒 (CellTrace™ CFSE Cell Proliferation Kit) 以方便的一次性瓶装形式提供用途广泛，稳定性高的细胞示踪剂。 羧基荧光素二醋酸盐琥珀酰亚胺酯，常称为 CFSE，可被动扩散进入细胞。 这种试剂没有颜色和荧光，直至细胞内的酯酶去除其醋酸盐基团，产生能发出明亮荧光的羧基荧光素琥珀酰亚胺酯。 琥珀酰亚胺酯与细胞内氨基反应，形成稳定且能用醛固定剂固定的荧光偶联物。 此试剂盒包含十份一次性瓶装的 CFSE，因此进行小规模实验时无需制备过量的易变质 CFSE 储存液。 此试剂盒还包括高质量的 DMSO（二甲基亚砜）和详细的实验方案。For Research Use Only. Not for use in diagnostic procedures.图表Suppressive capacity of isolated Treg cells.Suppressive capacity of isolated Treg cells. (A) CD4+ CD25–cells were stained with Ca...
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Click-iT™ EdU Pacific Blue™ Flow Cytometry Assay Kit
产品名称： Click-iT™ EdU Pacific Blue™ Flow Cytometry Assay Kit
型号：
时间： 2019 - 04 - 17
描述The Click-iT® EdU Pacific Blue™ Flow Cytometry Assay Kit provides a simplified, more robust assay for analyzing DNA replication in proliferating cells as compared to traditional BrdU methods. Newly synthesized DNA is analyzed using the 405 nm laser of the flow cytometer.• Accurate—superior results compared to BrdU assays• Fast—results in as little as 90 minutes• Economical—more assays per kitView selection guide for all Click-iT™ EdU and Click-iT™ Plus EdU assays for flow c...
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Attune™ NxT Acoustic Focusing Cytometer, blue
产品名称： Attune™ NxT Acoustic Focusing Cytometer, blue
型号：
时间： 2019 - 04 - 17
描述The 2018 Attune NxT Acoustic Focusing Cytometer has expanded functionalities to drive your research forward. Designed and developed to remove common barriers associated with flow cytometry, the evolutionary capabilities of the Attune NxT flow cytometer offer adaptable optical configuration options so you can get the most out of your multicolor analysis.• Free Attune NxT software with researcher-inspired upgrades• New green laser option for expanded utility and fluorochrome options• Simple push...
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Attune™ NxT Acoustic Focusing Cytometer, blue/red
产品名称： Attune™ NxT Acoustic Focusing Cytometer, blue/red
型号：
时间： 2019 - 04 - 17
描述The 2018 Attune NxT Acoustic Focusing Cytometer has expanded functionalities to drive your research forward. Designed and developed to remove common barriers associated with flow cytometry, the evolutionary capabilities of the Attune NxT flow cytometer offer adaptable optical configuration options so you can get the most out of your multicolor analysis.• Free Attune NxT software with researcher-inspired upgrades• New green laser option for expanded utility and fluorochrome options• Simple push...
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Attune™ NxT Acoustic Focusing Cytometer, blue/red/violet
产品名称： Attune™ NxT Acoustic Focusing Cytometer, blue/red/violet
型号：
时间： 2019 - 04 - 17
描述The 2018 Attune NxT Acoustic Focusing Cytometer has expanded functionalities to drive your research forward. Designed and developed to remove common barriers associated with flow cytometry, the evolutionary capabilities of the Attune NxT flow cytometer offer adaptable optical configuration options so you can get the most out of your multicolor analysis.• Free Attune NxT software with researcher-inspired upgrades• New green laser option for expanded utility and fluorochrome options• Simple push...
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Attune™ NxT Acoustic Focusing Cytometer, blue/red/violet/yellow
产品名称： Attune™ NxT Acoustic Focusing Cytometer, blue/red/violet/yellow
型号：
时间： 2019 - 04 - 17
描述The 2018 Attune NxT Acoustic Focusing Cytometer has expanded functionalities to drive your research forward. Designed and developed to remove common barriers associated with flow cytometry, the evolutionary capabilities of the Attune NxT flow cytometer offer adaptable optical configuration options so you can get the most out of your multicolor analysis.• Free Attune NxT software with researcher-inspired upgrades• New green laser option for expanded utility and fluorochrome options• Simple push...
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