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钙离子荧光探针Fluo-4 AM *Ultrapure Grade* *CAS 273221-67-3*

英文名称:Fluo-4 AM *Ultrapure Grade* *CAS 273221-67-3*
产品参数
Ex (nm)495Em (nm)528
分子量1096.95溶剂DMSO
存储条件在零下15度以下保存, 避免光照
产品概述

钙离子荧光探针Fluo-4 AM是美国AAT Bioquest生产的钙离子荧光探针,钙通量测定是用于筛选G蛋白偶联受体(GPCR)的药物发现中的优选方法。 我们的Fluo-4®和Rhod-4 系列钙检测试剂是亮的绿色和红色钙指示剂,而我们的Cal-520 和Cal-590 具有高的细胞内钙检测信号/背景比。AAT Bioquest以高质量提供其他钙指标,如Fluo-4,Fluo-3,Fura-2,Indo-1,Rhod-5N和Rhod-2 AM。百萤生物是AAT Bioquest 的中国代理商,为您提供优质的钙离子荧光探针。

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钙离子篇:时间轴式讲解应用于钙离子检测的探针

 

适用仪器


荧光显微镜  
Ex: FITC 滤波片组
Em: FITC 滤波片组
推荐孔板: 黑色透明底板

 


荧光酶标仪  
Ex: 490 nm
Em: 525 nm
Cutoff: 515 nm
推荐孔板: 黑色透明底板
读取模式: 底读模式/可分液处理
实验方案

实验方案

储备溶液配制

在高质量无水DMSO制备2至5 mM 的Fluo-4 AM中储备溶液。

 

工作溶液配制

Fluo-4 AM工作溶液
1.在实验当天,将Fluo-4AM溶解在DMSO中,或将指示剂储备溶液的等分试样解冻至室温。

2.在含有0.04%Pluronic®F-127的缓冲液(例如Hanks和Hepes缓冲液)中制备2至20µM Fluo-4 AM工作溶液。对于大多数细胞系,建议使用最终浓度为4-5μM的Fluo-4 AM。细胞负载所需指示剂的确切浓度请根据经验确定。

注:非离子洗涤剂Pluronic F-127用于提高Fluo-4 AM的水溶性。可从百萤购买各种Pluronic F-127溶液。
注:如果你的细胞含有有机阴离子转运蛋白,可以将丙磺舒(1-2mM)添加到染料工作溶液中(最终井内浓度为0.5-1mM),以减少酯化指示剂的泄漏。多种形式的丙磺舒产品,包括水溶性、钠盐和稳定溶液,可从百萤购买。

 

操作步骤

以下是我们推荐的将AM酯加载到活细胞中的方案。本方案仅提供指南,实际应根据您的具体需求进行修改。

1.在生长培养基中培养细胞过夜。
2.第二天,将1X Fluo-4 AM工作溶液添加到孔板中。
注意:如果你的化合物干扰血清,在染色前用新鲜的HHBS缓冲液代替生长培养基。
3.将加入染料的孔板在37°C的细胞培养箱中培养30至60分钟。
注:将染料培养2小时以上可以提高某些细胞系的信号强度。
4.用HHBS或您选择的缓冲液(含有阴离子转运蛋白抑制剂,如1mM丙磺舒)代替染料工作溶液,以去除任何多余的探针。
5.根据需要添加刺激物,并同时使用配备有FITC滤波片组的荧光显微镜或包含可编程液体处理系统(如FDSS、FLIPR或FlexStation)的荧光酶标仪在490/525nm,Cutoff=515nm处检测荧光强度。

  

图示

将U2OS细胞以40,000个细胞/100μL/孔接种过夜,置于96孔黑色壁/透明底板中。 除去生长培养基,将细胞分别与100μLFluo-3 AM,Fluo-4 AM和Fluo-8 AM在HHBS中以4μM浓度在37℃,5%CO 2中温育。 孵化器1小时。 用200μLHHBS洗涤细胞两次,然后使用FITC通道用荧光显微镜(Olympus IX71)成像。

 

试剂应用文献

AMPA receptors in the synapse turnover by monomer diffusion
Authors: 
Morise, Jyoji and Suzuki, Kenichi GN and Kitagawa, Ayaka and Wakazono, Yoshihiko and Takamiya, Kogo and Tsunoyama, Taka A and Nemoto, Yuri L and Takematsu, Hiromu and Kusumi, Akihiro and Oka, Shogo
Journal: 
Nature communications (2019): 1--18

Cryo-EM Studies of TMEM16F Calcium-Activated Ion Channel Suggest Features Important for Lipid Scrambling
Authors: Feng, Shengjie and Dang, Shangyu and Han, Tina Wei and Ye, Wenlei and Jin, Peng and Cheng, Tong and Li, Junrui and Jan, Yuh Nung and Jan, Lily Yeh and Cheng, Yifan
Journal: Cell Reports (2019): 567--579

Discrimination of Dormant and Active Hematopoietic Stem Cells by G0 Marker Reveals Dormancy Regulation by Cytoplasmic Calcium
Authors: Fukushima, Tsuyoshi and Tanaka, Yosuke and Hamey, Fiona K and Chang, Chih-Hsiang and Oki, Toshihiko and Asada, Shuhei and Hayashi, Yasutaka and Fujino, Takeshi and Yonezawa, Taishi and Takeda, Reina and others
Journal: Cell Reports (2019): 4144--4158

Ketamine Increases Proliferation of Human iPSC-Derived Neuronal Progenitor Cells via Insulin-Like Growth Factor 2 and Independent of the NMDA Receptor
Authors: Grossert, Aless and ra and Mehrjardi, Narges Zare and Bailey, Sarah J and Lindsay, Mark A and Hescheler, Jürgen and Saric, Tomo and Teusch, Nicole
Journal: Cells (2019): 1139

MRGPRX4 is a bile acid receptor for human cholestatic itch
Authors: Yu, Huasheng and Zhao, Tianjun and Liu, Simin and Wu, Qinxue and Johnson, Omar and Wu, Zhaofa and Zhuang, Zihao and Shi, Yaocheng and Peng, Luxin and He, Renxi and others
Journal: eLife (2019): e48431

P2Y6 signaling in alveolar macrophages prevents leukotriene-dependent type 2 allergic lung inflammation
Authors: Nagai, Jun and Balestrieri, Barbara and Fanning, Laura B and Kyin, Timothy and Cirka, Haley and Lin, Junrui and Idzko, Marco and Zech, Andreas and Kim, Edy Y and Brennan, Patrick J and others
Journal: The Journal of clinical investigation (2019)

Hyperglycaemia disrupts conducted vasodilation in the resistance vasculature of db/db mice
Authors: Lemmey, Hamish AL and Ye, Xi and Ding, Hong C and Triggle, Christopher R and Garland, Christopher J and Dora, Kim A
Journal: Vascular pharmacology (2018): 29--35

Methionine and valine activate the mammalian target of rapamycin complex 1 pathway through heterodimeric amino acid taste receptor (TAS1R1/TAS1R3) and intracellular Ca2+ in bovine mammary epithelial cells
Authors: Zhou, Y and Zhou, Z and Peng, J and Loor, Juan J
Journal: Journal of dairy science (2018): 11354--11363

TRPA1-dependent reversible opening of tight junction by natural compounds with an $\alpha$, $\beta$-unsaturated moiety and capsaicin
Authors: Kanda, Yusuke and Yamasaki, Youhei and Sasaki-Yamaguchi, Yoshie and Ida-Koga, Noriko and Kamisuki, Shinji and Sugawara, Fumio and Nagumo, Yoko and Usui, Takeo
Journal: Scientific reports (2018): 1--13

A new electro-optical approach for conductance measurement: an assay for the study of drugs acting on ligand-gated ion channels
Authors: Menegon, A and Pitassi, S and Mazzocchi, N and Redaelli, L and Rizzetto, R and Roll and JF and Poli, C and Imberti, M and Lanati, A and Grohovaz, F
Journal: Scientific Reports (2017)

Altered spontaneous calcium signaling of in situ chondrocytes in human osteoarthritic cartilage
Authors: Gong, Xiaoyuan and Xie, Wenbin and Wang, Bin and Gu, Lingchuan and Wang, Fuyou and Ren, Xiang and Chen, Cheng and Yang, Liu
Journal: Scientific reports (2017): 17093

Bystander effects elicited by single-cell photo-oxidative blue-light stimulation in retinal pigment epithelium cell networks
Authors: Ishii, Masaaki and Rohrer, Bärbel
Journal: Cell Death Discovery (2017): 16071

Bystander effects elicited by single-cell photo-oxidative blue-light stimulation in retinal pigment epithelium cell networks
Authors: Ishii, Masaaki and Rohrer, Bärbel
Journal: Cell Death Discovery (2017): 16071

High-throughput screen detects calcium signaling dysfunction in typical sporadic autism spectrum disorder
Authors: Schmunk, Galina and Nguyen, Rachel L and Ferguson, David L and Kumar, Kenny and Parker, Ian and Gargus, J Jay
Journal: Scientific Reports (2017): 40740

 

参考文献

A flow cytometric comparison of Indo-1 to Fluo-4 and Fura Red excited with low power lasers for detecting Ca(2+) flux
Authors: Bailey S, Macardle PJ.
Journal: J Immunol Methods (2006): 220
 
Functional Fluo-4/AM assay on P-glycoprotein transport activity in L1210/VCR cells by confocal microscopy
Authors: Orlicky J, Sulova Z, Dovinova I, Fiala R, Zahradnikova A, Jr., Breier A.
Journal: Gen Physiol Biophys (2004): 357
 
Comparison of human recombinant adenosine A2B receptor function assessed by Fluo-4-AM fluorometry and microphysiometry
Authors: Patel H, Porter RH, Palmer AM, Croucher MJ.
Journal: Br J Pharmacol (2003): 671
 
Measurement of the dissociation constant of Fluo-4 for Ca2+ in isolated rabbit cardiomyocytes using Ca2+ wave characteristics
Authors: Loughrey CM, MacEachern KE, Cooper J, Smith GL.
Journal: Cell Calcium (2003): 1
 
A sensitive method for the detection of foot and mouth disease virus by in situ hybridisation using biotin-labelled oligodeoxynucleotides and tyramide signal amplification
Authors: Zhang Z, Kitching P.
Journal: J Virol Methods (2000): 187
 
Kinetics of onset of mouse sperm acrosome reaction induced by solubilized zona pellucida: fluorimetric determination of loss of pH gradient between acrosomal lumen and medium monitored by dapoxyl (2-aminoethyl) sulfonamide and of intracellular Ca(2+) chang
Authors: Rockwell PL, Storey BT.
Journal: Mol Reprod Dev (2000): 335
 
MRP2, a human conjugate export pump, is present and transports fluo 3 into apical vacuoles of Hep G2 cells
Authors: Cantz T, Nies AT, Brom M, Hofmann AF, Keppler D.
Journal: Am J Physiol Gastrointest Liver Physiol (2000): G522
 
Use of co-loaded Fluo-4 and Fura Red fluorescent indicators for studying the cytosolic Ca(2+)concentrations distribution in living plant tissue
Authors: Walczysko P, Wagner E, Albrechtova JT.
Journal: Cell Calcium (2000): 23
 
[Ca2+]i following extrasystoles in guinea-pig trabeculae microinjected with Fluo-4 - a comparison with frog skeletal muscle fibres
Authors: Wohlfart B., undefined
Journal: Acta Physiol Scand (2000): 1
 
Determination of the intracellular dissociation constant, K(D), of the Fluo-4. Ca(2+) complex in mouse sperm for use in estimating intracellular Ca(2+) concentrations
Authors: Rockwell PL, Storey BT.
Journal: Mol Reprod Dev (1999): 418

 

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