Adipogen公司产品JC-1简介

Adipogen公司产品JC-1简介

产品名称:JC-1

别名:5,5′,6,6′-Tetrachloro-1,1′,3,3′-tetraethylbenzimidazolylcarbocyanine iodide

产品描述:The membrane-permeant dual-emission potential-sensitive JC-1 dye is widely used in apoptosis studies to monitor mitochondrial health by flow cytometry, fluorescence microscopy and in microplate-based fluorescent assays. JC-1 dye can be used as an indicator of mitochondrial membrane potential in a variety of cell types, including myocytes and neurons, as well as in intact tissues and isolated mitochondria. JC-1 accumulates in mitochondria, selectively generating an orange J-aggregate emission profile (590 nm) in healthy cells. After cell injury, as membrane potential decreases, JC-1 monomers are generated, resulting in a shift to green emission (529 nm). The principal advantage of JC-1 relative to other commonly employed fluorescent probes of mitochondrial membrane potential is that it allows qualitative visualization, considering the shift from orange to green fluorescence emission, and quantitative detection, considering the fluorescence intensity ratio.

保存温度:-20°C

运输温度:Ambient

预期分子量:652.2

产品形式:liquid

有效期:Stable for at least 2 years after receipt when stored at -20°C.

产地:瑞士

生产商:AdipoGen Life Sciences

CAS号:3520-43-2 and 47729-63-5

分子式:C25H27Cl4IN4

溶解度:Soluble in DMSO, ethanol, methanol or acetone.

文献引用:

1.J-aggregate formation of a carbocyanine as a quantitative fluorescent indicator of membrane potential: M. Reers, et al.; Biochemistry 30, 4480 (1991)

2.Intracellular heterogeneity in mitochondrial membrane potentials revealed by a J-aggregate-forming lipophilic cation JC-1: S.T. Smiley, et al.; PNAS 88, 3671 (1991)

3.A new method for the cytofluorimetric analysis of mitochondrial membrane potential using the J-aggregate forming lipophilic cation 5,5′,6,6′-tetrachloro-1,1′,3,3′-tetraethylbenzimidazolcarbocyanine iodide (JC-1): A. Cossarizza, et al.; BBRC 197, 40 (1993)

4.Mitochondrial membrane potential monitored by JC-1 dye: M. Reers, et al.; Methods Enzymol. 260, 406 (1995)

5.JC-1, but not DiOC6(3) or rhodamine 123, is a reliable fluorescent probe to assess delta psi changes in intact cells: implications for studies on mitochondrial functionality during apoptosis: S. Salvioli, et al.; FEBS Lett. 411, 77 (1997)

订购详情:

品牌 产品名称 产品货号 规格
Adipogen JC-1

AG-CR1-3568-M001

AG-CR1-3568-M005

AG-CR1-3568-5001

1mg

5mg

5 x 1 mg

详情请咨询Adipogen全国代理-上海金畔生物科技 


CAR-T细胞简介

CAR-T细胞简介

CAR-T细胞,即嵌合抗原受体(Chimeric antigen receptor, CAR)-T细胞,是通过基因工程方法在T细胞上表达受体,从而使T细胞靶向肿瘤细胞表面特异性蛋白,并杀伤肿瘤细胞。

CAR-T 细胞包含三个不同的结构域:

胞外结构域:

胞外结构域由三部分组成:信号肽、抗原识别区和间隔区。胞外结构域位于胞浆外侧,与细胞外空间相互作用,负责启动CAR-T细胞的免疫应答。

跨膜结构域:

跨膜结构域具有疏水性,其α-螺旋结构能够保持CAR-T细胞受体的稳定性。

胞内结构域: 

胞内结构域主要由CD3 ζ链胞质区的三个免疫受体酪氨酸活化基序(immunoreceptor tyrosine-based activation motifs,ITAMs)和共刺激信号区域组成。胞内结构域负责细胞内活化信号的传递。

当CAR-T细胞表面的工程化受体与其它细胞表面的靶蛋白结合时,其胞内结构域发生聚集并在CAR-T细胞内部传递活化信号。随后,活化信号将触发CAR-T细胞对靶细胞的效应功能,导致靶细胞被破坏。

这种基因工程改造的肿瘤特异性T细胞的优点之一是:它们能以MHC非限制性方式对抗原作出应答,避免了因MHC下调导致的肿瘤逃逸。

此外,与传统的T细胞受体(TCRs)不同,基于单链可变区(single-chain variable fragment, scFv)的嵌合受体可以靶向更多种类的抗原,包括如糖类肿瘤相关抗原(tumor-associated antigens, TAAs)等非经典的T细胞靶点。

目前,CAR-T细胞治疗在B细胞恶性肿瘤中的研究最为全面,在临床上显现出对复发性难治性儿童急性淋巴细胞白血病(acute lymphoblastic leukemia, ALL)显著的治疗效果,治愈率可达69%-90%。

迄今为止,仅Kymriah(Novartis) 和 Yescarta(Kite Pharma) 两种CAR-T细胞疗法获得FDA批准。然而,目前已有380多个基于CAR-T细胞的临床试验正在进行中,更多CAR-T细胞疗法获得批准指日可待。

如需了解更多详情,请联系上海金畔生物