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RPMI 1640

RPMI Media 1640

公司名称: Thermo Fisher Scientific
产品编号: 21875
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An Image-based Assay for High-throughput Analysis of Cell Proliferation and Cell Death of Adherent Cells
Author:
Date:
2018-05-05
[Abstract]  In this protocol, we describe a method to monitor cell proliferation and death by live-cell imaging of propidium iodide (PI)-stained adherent mammalian cells. PI is widely used to assess cell death. However, it is usually used in end-point assays. Recently, we implemented the use of PI for real-time cell death assessment by automated imaging. Cells are seeded in a 96-well format, and after attachment, the treatments are added directly to the wells together with PI. Thereafter, cells are subjected to automated time-lapse imaging and quantification by computer software. Combined analyses of ... [摘要]  在该协议中,我们描述了通过碘化丙啶(PI)染色的贴壁哺乳动物细胞的活细胞成像来监测细胞增殖和死亡的方法。 PI广泛用于评估细胞死亡。 但是,它通常用于终点检测。 最近,我们通过自动成像实现了PI的实时细胞死亡评估。 将细胞以96孔形式接种,并且在附着后,将处理与PI一起直接加入到孔中。 之后,通过计算机软件对细胞进行自动延时成像和定量。 相衬和荧光图像的组合分析允许评估对细胞增殖的处理效果以及细胞死亡的程度和动力学。

【背景】多种基于细胞的测定可用于确定细胞死亡,但其中大多数测定包括MTT(溴化3-(4,5-二甲基噻唑-2-基)-2,5-二苯基四唑鎓)测定,晶蓝染色,和各种基于流式细胞术的方法,都有作为终点分析的限制。最近,我们使用自动荧光成像系统(Essen Bioscience的IncuCyte ZOOM)(Sehgal等人,2017)将碘化丙啶(PI)用于细胞死亡的活细胞评估。通过对相差图像进行组合分析,可以同时检测细胞抑制和细胞毒性效应。这种方法证明是可靠和可重复的,以及非常简单和便宜。在我们最近的出版物中,我们将它用于三种不同的癌细胞系(LNCaP,PC3和MCF7),以有效地确定和比较ER Ca 2 +泵抑制剂毒胡萝卜素各种药物类似物(Tg )(Sehgal et ...

Measurement of Endogenous MALT1 Activity
Author:
Date:
2013-07-20
[Abstract]   MALT1(Mucosa associated lymphoid tissue protein 1) is an important adapter protein for the NF-kB driven lymphocyte activation and the development and survival of distinct B-cell lymphoma entities. In addition MALT1 is a cysteine protease that structurally resembles caspases while having a different substrate preference and mechanism of activation. This paracaspase activity of MALT1 has been shown to be critical for an optimal NF-kB activation and survival of the aggressive ABC-DLBCL (Activated B cell-type of diffuse large B cell lymphoma), which highlights the protease as an attractive ... [摘要]  MALT1(粘膜相关淋巴组织蛋白1)是NF-kB驱动的淋巴细胞活化和不同B细胞淋巴瘤实体的发展和存活的重要衔接蛋白。此外,MALT1是半胱氨酸蛋白酶,其在结构上类似于半胱天冬酶,同时具有不同的底物偏好和激活机制。已显示MALT1的这种半胱氨酸蛋白酶活性对于侵袭性ABC-DLBCL(活化的B细胞型弥漫性大B细胞淋巴瘤)的最佳NF-kB活化和存活是至关重要的,其突出显示蛋白酶作为有吸引力的治疗靶标治疗不同的B细胞淋巴瘤和免疫性疾病如类风湿性关节炎或多发性硬化。在该协议中,我们描述了荧光切割测定,其可以用于测量内源性以及异位MALT1活性。为此,细胞MALT1需要通过抗体免疫沉淀从裂解的细胞中沉淀,随后与荧光底物肽孵育。已经开发了MALT1切割测定以直接测定MALT1在适应性免疫应答过程中以及淋巴恶性肿瘤中的病理信号传导中的活性谱。此外,MALT1活性测定已经成功地用于用小分子抑制剂监测细胞MALT1抑制。

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