钙离子荧光探针Fluo-8L, 钠盐 货号21099-AAT Bioquest荧光染料

上海金畔生物科技有限公司代理AAT Bioquest荧光染料全线产品,欢迎访问AAT Bioquest荧光染料官网了解更多信息。

钙离子荧光探针Fluo-8L, 钠盐

钙离子荧光探针Fluo-8L, 钠盐

钙离子荧光探针Fluo-8L, 钠盐    货号21099 货号 21099 存储条件 在零下15度以下保存, 避免光照
规格 1 mg 价格 3924
Ex (nm) 495 Em (nm) 516
分子量 828.54 溶剂 Water
产品详细介绍

简要概述

钙离子荧光探针Fluo-8L, 钠盐是美国AAT Bioquest生产的用于钙通量测定的试剂,钙测量对于许多生物学研究至关重要。在结合Ca2+后显示光谱响应的荧光探针使研究人员能够使用荧光显微镜,流式细胞仪,荧光光谱和荧光酶标仪来研究细胞内游离Ca2+浓度的变化。在可见光激发钙指示剂中,Fluo-3和Fluo-4最常用。但是,Fluo-3 AM和Fluo-4 AM在酯酶水解后在活细胞中仅适度发荧光,并且需要苛刻的细胞加载条件才能最大化其细胞钙反应。开发Fluo-8®染料可改善细胞负载和钙响应,同时保持便捷的Fluo-3和Fluo-4光谱波长(在〜490 nm处具有最大激发和在〜520 nm处具有最大发射)。Fluo-8®AM仅需要室温,而Fluo-3 AM和Fluo-4 AM需要37℃的细胞负载。此外,Fluo-8®的亮度是Fluo-4 AM的2倍,是Fluo-3 AM的4倍。AAT Bioquest提供了一套出色的Fluo-8®试剂,具有不同的钙结合亲和力(Fluo-8®:Kd = 389 nM; Fluo-8H:Kd = 232 nM; Fluo-8L:Kd = 1.86 µM; Fluo-8FF :Kd = 10 µM)。金畔生物是AAT Bioquest 的中国代理商,为您提供最优质的钙离子荧光探针Fluo-8L, 钠盐。

点击查看光谱

钙离子篇:时间轴式讲解应用于钙离子检测的探针

产品说明书

操作步骤

1.使用钙指示剂AM Esters加载细胞:

        AM酯是非极性酯,其易于穿过活细胞膜,并且通过活细胞内的细胞酯酶快速水解。 AM酯广泛用于非侵入性地将各种极性荧光探针装载到活细胞中。 但是,使用AM酯时必须小心,因为它们易于水解,特别是在溶液中。 它们应在使用前用高质量的无水二甲基亚砜(DMSO)重新配制。 DMSO储备溶液应在-20°C下干燥储存并避光。 在这些条件下,AM酯应稳定数月。

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

a)在高质量无水DMSO中制备2至5 mM AM酯原液。

b)在实验当天,将钙指示剂溶解在DMSO中或将等份的指示剂储备溶液解冻至室温。使用0.02%Pluronic®F-127在您选择的缓冲液(如Hanks和Hepes缓冲液)中制备1至10μM的工作溶液。对于大多数细胞系,我们建议钙指示剂的最终浓度为4-5 uM。 细胞加载所需指标的确切浓度必须根据经验确定。 为避免因过载和潜在染料毒性引起的任何伪影,建议使用可产生足够信号强度的最小探针浓度。

注意:非离子洗涤剂Pluronic®F-127有时用于增加钙指示剂AM酯的水溶性。

c)如果您的细胞含有有机阴离子转运蛋白,可以在细胞培养基中加入丙磺舒(1-2.5 mM)或磺吡酮(0.1-0.25 mM),以减少脱酯化指标的泄漏。 在室温或37°C下用钙指示剂酯孵育细胞20分钟至1小时。

d)在HHBS或您选择的缓冲液(含有阴离子转运蛋白抑制剂,如2.5mM丙磺舒,如果适用)中洗涤细胞1-2次以除去过量的探针。

e)在所需的Ex / Em波长下进行实验(见说明书中的表1)。

 

2.测量细胞内钙响应:

        为了确定溶液的游离钙浓度或单波长钙指示剂的Kd,使用以下等式:[Ca]free = Kd[F – Fmin]/Fmax – F]

        其中F是实验钙水平下指示剂的荧光,Fmin是不存在钙时的荧光,Fmax是钙饱和探针的荧光。 解离常数(Kd)是探针对钙的亲和力的量度。 与校准溶液相比,荧光指示剂的Ca2 +结合和光谱性质在细胞环境中变化非常显着。 细胞内指标的原位校准通常产生显着高于体外测定的Kd值。 通过在离子载体如A-23187,4-溴A-23187和离子霉素存在下将加载的细胞暴露于受控的Ca 2+缓冲液来进行原位校准。 或者,细胞透化剂如洋地黄皂苷或X-100可用于将指示剂暴露于细胞外培养基的受控Ca2 +水平。 说明书中的表1列出了一些钙试剂的Kd值供您参考。

 

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

2-OMe-lysophosphatidylcholine analogues are GPR119 ligands and activate insulin secretion from βTC-3 pancreatic cells: Evaluation of structure-dependent biological activity
Authors: Anna Drzazga, Agata Sowińska, Agnieszka Krzemińska, Andrzej Okruszek, Piotr Paneth, Maria Koziolkiewicz, Edyta Gendaszewska-Darmach
Journal: Biochimica et Biophysica Acta (BBA)-Molecular and Cell Biology of Lipids (2017)

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

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

Analysis of Ca2+ response of osteocyte network by three-dimensional time-lapse imaging in living bone
Authors: Tomoyo Tanaka, Mitsuhiro Hoshijima, Junko Sunaga, Takashi Nishida, Mana Hashimoto, Naoya Odagaki, Ryuta Osumi, Taiji Aadachi, Hiroshi Kamioka
Journal: Journal of Bone and Mineral Metabolism (2017): 1–10

Aryl-and alkyl-phosphorus-containing flame retardants induced mitochondrial impairment and cell death in Chinese hamster ovary (CHO-k1) cells
Authors: Chao Huang, Na Li, Shengwu Yuan, Xiaoya Ji, Mei Ma, Kaifeng Rao, Zijian Wang
Journal: Environmental Pollution (2017): 775–786

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

Ca 2+ signals initiate at immobile IP 3 receptors adjacent to ER-plasma membrane junctions
Authors: Nagendra Babu Thillaiappan, Alap P Chavda, Stephen C Tovey, David L Prole, Colin W Taylor
Journal: Nature Communications (2017): 1505

Cells smell on a CMOS: A portable odorant detection system using cell-laden collagen pillars
Authors: Yusuke Hirata, Yuya Morimoto, Eunryel Nam, Shotaro Yoshida, Shoji Takeuchi
Journal: (2017): 13–16

Ex vivo replication of phenotypic functions of osteocytes through biomimetic 3D bone tissue construction
Authors: Qiaoling Sun, Saba Choudhary, Ciaran Mannion, Yair Kissin, Jenny Zilberberg, Woo Y Lee
Journal: Bone (2017)

High Glucose Enhances Isoflurane-Induced Neurotoxicity by Regulating TRPC-Dependent Calcium Influx
Authors: ZhongJie Liu, ChangQing Ma, Wei Zhao, QingGuo Zhang, Rui Xu, HongFei Zhang, HongYi Lei, ShiYuan Xu
Journal: Neurochemical Research (2017): 1–14

 

相关产品

产品名称 货号
钙离子荧光探针Cal-520 , AM Cat#21130
钙离子荧光探针Fluo-8, AM Cat#21080
新型钙离子荧光探针Calbryte 520, AM *细胞渗透性* Cat#20650

说明书
钙离子荧光探针Fluo-8L, 钠盐.pdf

钙离子荧光探针Fluo-8,钠盐 货号21086-AAT Bioquest荧光染料

上海金畔生物科技有限公司代理AAT Bioquest荧光染料全线产品,欢迎访问AAT Bioquest荧光染料官网了解更多信息。

钙离子荧光探针Fluo-8,钠盐

钙离子荧光探针Fluo-8,钠盐

钙离子荧光探针Fluo-8,钠盐    货号21086 货号 21086 存储条件 在零下15度以下保存, 避免光照
规格 1 mg 价格 3924
Ex (nm) 495 Em (nm) 516
分子量 796.53 溶剂 Water
产品详细介绍

简要概述

钙离子荧光探针Fluo-8,钠盐是美国AAT Bioquest生产的用于钙通量测定的试剂,钙测量对于许多生物学研究至关重要。在结合Ca2+后显示光谱响应的荧光探针使研究人员能够使用荧光显微镜,流式细胞仪,荧光光谱和荧光酶标仪来研究细胞内游离Ca2+浓度的变化。在可见光激发钙指示剂中,Fluo-3和Fluo-4最常用。但是,Fluo-3 AM和Fluo-4 AM在酯酶水解后在活细胞中仅适度发荧光,并且需要苛刻的细胞加载条件才能最大化其细胞钙反应。开发Fluo-8®染料可改善细胞负载和钙响应,同时保持便捷的Fluo-3和Fluo-4光谱波长(在〜490 nm处具有最大激发和在〜520 nm处具有最大发射)。Fluo-8®AM仅需要室温,而Fluo-3 AM和Fluo-4 AM需要37℃的细胞负载。此外,Fluo-8®的亮度是Fluo-4 AM的2倍,是Fluo-3 AM的4倍。AAT Bioquest提供了一套出色的Fluo-8®试剂,具有不同的钙结合亲和力(Fluo-8®:Kd = 389 nM; Fluo-8H:Kd = 232 nM; Fluo-8L:Kd = 1.86 µM; Fluo-8FF :Kd = 10 µM)。金畔生物是AAT Bioquest 的中国代理商,为您提供最优质的钙离子荧光探针Fluo-8,钠盐。

点击查看光谱

钙离子篇:时间轴式讲解应用于钙离子检测的探针

产品说明书

操作步骤

1.使用钙指示剂AM Esters加载细胞:

        AM酯是非极性酯,其易于穿过活细胞膜,并且通过活细胞内的细胞酯酶快速水解。 AM酯广泛用于非侵入性地将各种极性荧光探针装载到活细胞中。 但是,使用AM酯时必须小心,因为它们易于水解,特别是在溶液中。 它们应在使用前用高质量的无水二甲基亚砜(DMSO)重新配制。 DMSO储备溶液应在-20°C下干燥储存并避光。 在这些条件下,AM酯应稳定数月。

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

a)在高质量无水DMSO中制备2至5 mM AM酯原液。

b)在实验当天,将钙指示剂溶解在DMSO中或将等份的指示剂储备溶液解冻至室温。使用0.02%Pluronic®F-127在您选择的缓冲液(如Hanks和Hepes缓冲液)中制备1至10μM的工作溶液。对于大多数细胞系,我们建议钙指示剂的最终浓度为4-5 uM。 细胞加载所需指标的确切浓度必须根据经验确定。 为避免因过载和潜在染料毒性引起的任何伪影,建议使用可产生足够信号强度的最小探针浓度。

注意:非离子洗涤剂Pluronic®F-127有时用于增加钙指示剂AM酯的水溶性。

c)如果您的细胞含有有机阴离子转运蛋白,可以在细胞培养基中加入丙磺舒(1-2.5 mM)或磺吡酮(0.1-0.25 mM),以减少脱酯化指标的泄漏。 在室温或37°C下用钙指示剂酯孵育细胞20分钟至1小时。

d)在HHBS或您选择的缓冲液(含有阴离子转运蛋白抑制剂,如2.5mM丙磺舒,如果适用)中洗涤细胞1-2次以除去过量的探针。

e)在所需的Ex / Em波长下进行实验(见说明书中的表1)。

 

2.测量细胞内钙响应:

        为了确定溶液的游离钙浓度或单波长钙指示剂的Kd,使用以下等式:[Ca]free = Kd[F – Fmin]/Fmax – F]

        其中F是实验钙水平下指示剂的荧光,Fmin是不存在钙时的荧光,Fmax是钙饱和探针的荧光。 解离常数(Kd)是探针对钙的亲和力的量度。 与校准溶液相比,荧光指示剂的Ca2 +结合和光谱性质在细胞环境中变化非常显着。 细胞内指标的原位校准通常产生显着高于体外测定的Kd值。 通过在离子载体如A-23187,4-溴A-23187和离子霉素存在下将加载的细胞暴露于受控的Ca 2+缓冲液来进行原位校准。 或者,细胞透化剂如洋地黄皂苷或X-100可用于将指示剂暴露于细胞外培养基的受控Ca2 +水平。 说明书中的表1列出了一些钙试剂的Kd值供您参考。

 

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

2-OMe-lysophosphatidylcholine analogues are GPR119 ligands and activate insulin secretion from βTC-3 pancreatic cells: Evaluation of structure-dependent biological activity
Authors: Anna Drzazga, Agata Sowińska, Agnieszka Krzemińska, Andrzej Okruszek, Piotr Paneth, Maria Koziolkiewicz, Edyta Gendaszewska-Darmach
Journal: Biochimica et Biophysica Acta (BBA)-Molecular and Cell Biology of Lipids (2017)

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

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

Analysis of Ca2+ response of osteocyte network by three-dimensional time-lapse imaging in living bone
Authors: Tomoyo Tanaka, Mitsuhiro Hoshijima, Junko Sunaga, Takashi Nishida, Mana Hashimoto, Naoya Odagaki, Ryuta Osumi, Taiji Aadachi, Hiroshi Kamioka
Journal: Journal of Bone and Mineral Metabolism (2017): 1–10

Aryl-and alkyl-phosphorus-containing flame retardants induced mitochondrial impairment and cell death in Chinese hamster ovary (CHO-k1) cells
Authors: Chao Huang, Na Li, Shengwu Yuan, Xiaoya Ji, Mei Ma, Kaifeng Rao, Zijian Wang
Journal: Environmental Pollution (2017): 775–786

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

Ca 2+ signals initiate at immobile IP 3 receptors adjacent to ER-plasma membrane junctions
Authors: Nagendra Babu Thillaiappan, Alap P Chavda, Stephen C Tovey, David L Prole, Colin W Taylor
Journal: Nature Communications (2017): 1505

Cells smell on a CMOS: A portable odorant detection system using cell-laden collagen pillars
Authors: Yusuke Hirata, Yuya Morimoto, Eunryel Nam, Shotaro Yoshida, Shoji Takeuchi
Journal: (2017): 13–16

Ex vivo replication of phenotypic functions of osteocytes through biomimetic 3D bone tissue construction
Authors: Qiaoling Sun, Saba Choudhary, Ciaran Mannion, Yair Kissin, Jenny Zilberberg, Woo Y Lee
Journal: Bone (2017)

High Glucose Enhances Isoflurane-Induced Neurotoxicity by Regulating TRPC-Dependent Calcium Influx
Authors: ZhongJie Liu, ChangQing Ma, Wei Zhao, QingGuo Zhang, Rui Xu, HongFei Zhang, HongYi Lei, ShiYuan Xu
Journal: Neurochemical Research (2017): 1–14

 

相关产品

产品名称 货号
钙离子荧光探针Cal-520 , AM Cat#21130
钙离子荧光探针Fluo-8, AM Cat#21080
新型钙离子荧光探针Calbryte 520, AM *细胞渗透性* Cat#20650

说明书
钙离子荧光探针Fluo-8,钠盐.pdf

细胞膜荧光探针DiOC16(3),高氯酸盐 CAS 78566-75-3 货号22044-AAT Bioquest荧光染料

上海金畔生物科技有限公司代理AAT Bioquest荧光染料全线产品,欢迎访问AAT Bioquest荧光染料官网了解更多信息。

细胞膜荧光探针DiOC16(3),高氯酸盐 CAS 78566-75-3

细胞膜荧光探针DiOC16(3),高氯酸盐 CAS 78566-75-3

细胞膜荧光探针DiOC16(3),高氯酸盐 CAS 78566-75-3    货号22044 货号 22044 存储条件 在零下15度以下保存, 避免光照
规格 25 mg 价格 1008
Ex (nm) 550 Em (nm) 564
分子量 877.76 溶剂 DMSO
产品详细介绍

简要概述

细胞膜荧光探针DiOC16(3),高氯酸盐是美国AAT Bioquest生产的用于细胞膜检测的荧光探针,DiA,DiI,DiO,DiD和DiR染料是用于标记细胞膜和其他疏水结构的亲脂性荧光染料家族。当掺入膜中或与亲脂性生物分子如蛋白质结合时,这些对环境敏感的染料的荧光大大增强,尽管它们在水中是弱荧光的。它们具有高消光系数,极性依赖性荧光和短激发态寿命。一旦应用于细胞,这些染料在细胞质膜内横向扩散,导致整个细胞以其最佳浓度均匀染色。 DiI(橙色荧光),DiO(绿色荧光),DiD(红色荧光)和DiR(深红色荧光)的独特荧光颜色为活细胞的多色成像和流式细胞分析提供了便利的工具。 DiO和DiI可分别与标准FITC和TRITC过滤器一起使用。其中DiD受633 nm He-Ne激光器的激发,并且具有比DiI更长的激发和发射波长,为标记具有显着内在荧光的细胞和组织提供了有价值的替代方案。 DiR可能对体内成像或追踪有用,因为红外光通过细胞和组织的有效传播和低水平的红外线范围内的自发荧光。金畔生物是AAT Bioquest的中国代理商,为您提供最优质的细胞膜荧光探针DiOC16(3),高氯酸盐。

Di系列染料 特点 选择建议
DiO染料(绿色) 活细胞或固定细胞、组织的的长期示踪剂。荧光强度低于DiI。对某些固定组织的染色效果一般。 DiI, DiO, DiD 和 DiR均可染色活细胞或固定细胞及组织(请您根据您的需求选择相应的探针),DiI比DiO荧光更亮;DiD,DiR波长更长,更适合组织染色;
DiA染料(绿色) 一种细胞膜绿色荧光染料,它在细胞膜中的扩散速度比 DiO 快,并且经常和 DiI 一起使用于细胞膜双色标记。可以进行染色后的固定。DiA 对固定细胞的染色效果比 DiO 好。
DiI染料(橙色) 活细胞或固定细胞、组织的的长期示踪剂。除标记细胞膜外,还可以检测细胞的融合和粘附、细胞迁移等。
DiB染料(橘色) 一种检测细胞膜电位的亲脂性阴离子荧光染料,它本身无荧光,当进人细胞与胞浆内的蛋白质结合后才发出荧光。当它进入细胞后,指示细胞内荧光强度增加,即膜电位增加表示细胞去极化;反之,若细胞内荧光强度降低,即膜电位降低表示细胞超极化。
DiD染料(红色) 染色效率高,均一,不易猝灭,细胞毒性低,背景干扰小。
DiS染料(红色) 一种细胞膜红色荧光染料,它在细胞膜中的扩散速度比 DiD快,可以进行染色后的固定。DiS 对固定细胞的染色效果比 DiD好。
DiR染料(深红色) 常用于标记细胞膜,红外荧光可以穿透细胞和组织,在活体成像中用来示踪。DiR可以进行染色后的固定。

点击查看光谱

产品说明书

操作方法

1.准备DiO,DiI,DiD,DiS或DiR膜染色溶液:

1.1制备DMSO或EtOH储备溶液:储备溶液应在DMSO或EtOH中以1-5mM制备。

注意:储备溶液的未使用部分应储存在-20 ℃。 避免反复冻/融循环。

1.2准备工作溶液:将储备溶液(步骤1.1)稀释到合适的缓冲液中,如无血清培养基,HBSS或PBS制备1至5μM的工作溶液。

注意:对于不同的细胞类型和/或实验条件,应根据经验确定工作溶液的最终浓度。 建议在至少超过十倍范围的浓度下进行测试。

 

2.将细胞染成悬浮液:

2.1在染料工作溶液中悬浮细胞密度为1×106 / mL(来自步骤1.2)。

2.2在37°C孵育2-20分钟。 最佳孵育时间取决于细胞类型。 首先孵育20分钟,然后根据需要进行优化以获得均匀的标记。

2.3将标记的悬浮管以1000至1500rpm离心5分钟。

2.4取出上清液,轻轻地将细胞重新悬浮在预热(37°C)的生长培养基中。

2.5按步骤2.3和2.4洗涤两次。

 

3.染色贴壁细胞:

3.1在无菌玻璃盖玻片上培养贴壁细胞。

3.2从生长培养基中取出盖玻片,轻轻地排出多余的培养基。 将盖玻片放在湿度箱中。

3.3将100μL染料工作溶液(来自步骤1.2)吸移到盖玻片的角落,轻轻搅拌直至所有细胞都被覆盖。

3.4将盖玻片在37°C孵育2-20分钟。 最佳孵育时间取决于细胞类型。 首先孵育20分钟,然后根据需要进行优化以获得均匀的标记。

3.5排出染料工作溶液,用生长培养基清洗盖玻片2-3次。每个洗涤循环用预热的生长培养基覆盖细胞,孵育5-10分钟后排出培养基。

 

4.显微镜检测:

4.1说明书中的表1总结了DiD,DiO,DiI,DiS和DiR滤波器组的选择。

4.2为了同时检测多种染料,可提供如下多波段滤波器组:

a)DiI和DiO = Omega XF52,Chroma 51004

b)DiI和DiD = Omega XF92,Chroma 51007

c)DiI,DiO和DiD = Omega XF93,Chroma 61005

 

5.流式细胞仪检测:

用DiO,DiI,DiD,DiS和DiR标记的细胞可分别使用常规FL1,FL2,FL3和FL4流式细胞仪检测通道进行分析。

 

参考文献

Exosomes from hyperglycemia-stimulated vascular endothelial cells contain versican that regulate calcification/senescence in vascular smooth muscle cells
Authors: Shuang Li, Jun-Kun Zhan, Yan-Jiao Wang, Xiao Lin, Jia-Yu Zhong, Yi Wang, Pan Tan, Jie-Yu He, Xing-Jun Cui, Yi-Yin Chen
Journal: Cell & Bioscience (2019): 1

The Influence of Cell Source and Donor Age on the Tenogenic Potential and Chemokine Secretion of Human Mesenchymal Stromal Cells
Authors: Weronika Zarychta-Wisniewska, Anna Burdzińska, Katarzyna Zielniok, Marta Koblowska, Kamila Gala, Piotr Pedzisz, Roksana Iwanicka-Nowicka, Anna Fogtman, Aleksandra Aksamit, Agnieszka Kulesza
Journal: Stem Cells International (2019)

Cyclic RGD peptide-modified liposomal drug delivery system for targeted oral apatinib administration: enhanced cellular uptake and improved therapeutic effects
Authors: Zhiwang Song, Yun Lin, Chan Feng Xia Zhang, Yonglin Lu, Yong Gao, Chunyan Dong
Journal: International Journal of Nanomedicine (2017): 1941

In vivo imaging system for explants analysis—A new approach for assessment of cell transplantation effects in large animal models
Authors: Weronika Zarychta-Wisniewska, Anna Burdzinska, Radoslaw Zagozdzon, Bartosz Dybowski, Marta Butrym, Zdzislaw Gajewski, Leszek Paczek
Journal: PloS one (2017): e0184588

Influence of Particle Geometry on Gastrointestinal Transit and Absorption following Oral Administration
Authors: Dong Li, Jie Zhuang, Haisheng He, Sifan Jiang, Amrita Banerjee, Yi Lu, Wei Wu, Samir Mitragotri, Li Gan, Jianping Qi
Journal: ACS Applied Materials & Interfaces (2017)

Mesenchymal stem cells increase skin graft survival time and up-regulate PD-L1 expression in splenocytes of mice
Authors: Ali Moravej, Bita Geramizadeh, Negar Azarpira, Amir-Hasan Zarnani, Ramin Yaghobi, Mehdi Kalani, Maryam Khosravi, Amin Kouhpayeh, Mohammad-Hossein Karimi
Journal: Immunology Letters (2017)

Novel approach for the detection of intraperitoneal micrometastasis using an ovarian cancer mouse model
Authors: Ayesha B Alvero, Dongin Kim, Eydis Lima, Natalia J Sumi, Jung Seok Lee, Carlos Cardenas, Mary Pitruzzello, Dan-Arin Silasi, Natalia Buza, Tarek Fahmy
Journal: Scientific Reports (2017)

On-Demand Drug Releasing from Dual Targeting Small Nanoparticles Triggered by High Intensity Focused Ultrasound Enhanced Glioblastoma Targeting Therapy
Authors: Zimiao Luo, Kai Jin, Qiang Pang, shun shen, Zhiqiang Yan, Ting Jiang, Xiaoyan Zhu, Lei Yu, Zhiqing Pang, Xinguo Jiang
Journal: ACS Applied Materials & Interfaces (2017)

Overexpression of c-Met in bone marrow mesenchymal stem cells improves their effectiveness in homing and repair of acute liver failure
Authors: Kun Wang, Yuwen Li, Tiantian Zhu, Yongting Zhang, Wenting Li, Wenyu Lin, Jun Li, Chuanlong Zhu
Journal: Stem Cell Research & Therapy (2017): 162

The accelerated blood clearance phenomenon of PEGylated nanoemulsion upon cross administration with nanoemulsions modified with polyglycerin
Authors: Yuqing Su, Lirong Wang, Kaifan Liang, Mengyang Liu, Xinrong Liu, Yanzhi Song, Yihui Deng
Journal: Asian Journal of Pharmaceutical Sciences (2017)

说明书
细胞膜荧光探针DiOC16(3),高氯酸盐 CAS 78566-75-3.pdf

红色荧光示踪探针 CytoTrace CFDA 货号22016-AAT Bioquest荧光染料

上海金畔生物科技有限公司代理AAT Bioquest荧光染料全线产品,欢迎访问AAT Bioquest荧光染料官网了解更多信息。

红色荧光示踪探针 CytoTrace CFDA

红色荧光示踪探针 CytoTrace CFDA

红色荧光示踪探针 CytoTrace CFDA    货号22016 货号 22016 存储条件 在零下15度以下保存, 避免光照
规格 1 mg 价格 2604
Ex (nm) 562 Em (nm) 576
分子量 652.43 溶剂 DMSO
产品详细介绍

简要概述

CytoTrace 红色荧光探针保留了Cy3 / TRITC的光谱特性,因此可以使用荧光显微镜或流式细胞仪轻松检测其信号。它自由地穿过细胞膜,并在与细胞成分反应后转化为不渗透细胞的产物。细胞不渗透的反应产物经过数代传给子细胞,但没有转移到群体中的相邻细胞。装有CytoTrace Red探针的细胞通常可以发出荧光,并且至少可以存活24小时,这使该探针成为了出色的长期细胞示踪剂。染色图案可以用甲醛或戊二醛固定,用于信号放大和其他应用。它的光谱与GFP或FITC标记的抗体的光谱很好分离。

点击查看光谱

产品说明书

操作步骤

该协议仅提供指南,应根据您的特定需求进行修改。

1.准备2-10 mMDMSO储备溶液

对于#22014添加45微升DMSO成50 μ 克小瓶使2mM的储备溶液(1毫克/毫升,相当于1.8毫摩尔);

对于#22015添加36微升DMSO成50 μ 克小瓶制成10mM储备溶液(1毫克/毫升,相当于1.46毫摩尔);

对于#22016,添加153 uL ml DMSO以制成10 mM储备溶液(1 mg / ml相当于1.53 mM);

对于#22017,添加215μLDMSO以制成10 mM储备溶液(1 mg / ml相当于2.15 mM);

对于#22020,将4.2 mg溶于1 ml DMSO中制成10 mM储备溶液(1 mg / ml相当于〜2.4 mM);

注意:储备溶液应及时使用;应将所有剩余的溶液等分并在< -20 o C下冷冻。避免重复冻融循环,并避光

2.准备染料工作液

在使用前,通过用Hanks和20 mM Hepes缓冲液(HHBS)或您选择的pH 7缓冲液稀释步骤1中的DMSO储备溶液,准备好1至20 µM的染料工作溶液。

3.用流式细胞仪或荧光显微镜分析细胞:

3.1用测试化合物处理细胞所需的时间。

3.2离心细胞,每管得到2-10 x105细胞。

3.3将细胞重悬于500 µL 的染料工作溶液中(来自步骤2)。

3.4将细胞与染料溶液在室温或37° C下避光放置15至30分钟。

3.5从细胞中除去染料工作溶液,用HHBS或您选择的缓冲液洗涤细胞。将细胞重悬于500 µL预热的HHBS或培养基中,每管可得到2-10 x 10 5个细胞。

3.6用流式细胞仪(FL1通道) 或荧光显微镜监测Ex / Em = 490/520 nm处的荧光变化。

注意:对于细菌细胞染色:将母液在通过测试细菌过夜生长而预先调节的营养肉汤中以1:800的比例稀释时,染色是最有效的,但是也可以使用新鲜的营养肉汤或PBS。细菌悬浮液应用PBS稀释至105 – 10 7每毫升。将1 ml溶液加到.45 µm过滤器(25mm)上并真空过滤除去溶液,然后加入1ml染料溶液并在室温下孵育5-10分钟,即可对细菌染色。

 

参考文献

Fluorescence-Based Transport Assays Revisited in a Human Renal Proximal Tubule Cell Line
Authors: Caetano-Pinto P, Janssen MJ, Gijzen L, Verscheijden L, Wilmer MJ, Masereeuw R.
Journal: Mol Pharm (2016): 933

The variable chemotherapeutic response of Malabaricone-A in leukemic and solid tumor cell lines depends on the degree of redox imbalance
Authors: Manna A, De Sarkar S, De S, Bauri AK, Chattopadhyay S, Chatterjee M.
Journal: Phytomedicine (2015): 713

Cell membrane tracker based on restriction of intramolecular rotation
Authors: Zhang C, Jin S, Yang K, Xue X, Li Z, Jiang Y, Chen WQ, Dai L, Zou G, Liang XJ.
Journal: ACS Appl Mater Interfaces (2014): 8971

A multiple model probability hypothesis density tracker for time-lapse cell microscopy sequences
Authors: Rezatofighi SH, Gould S, Vo BN, Mele K, Hughes WE, Hartley R.
Journal: Inf Process Med Imaging (2013): 110

Evaluation of stability and sensitivity of cell fluorescent labels when used for cell migration
Authors: Beem E, Segal MS.
Journal: J Fluoresc (2013): 975

TLM-Tracker: software for cell segmentation, tracking and lineage analysis in time-lapse microscopy movies
Authors: Klein J, Leupold S, Biegler I, Biedendieck R, Munch R, Jahn D.
Journal: Bioinformatics (2012): 2276

Horizontal DNA transfer from donor to host cells as an alternative mechanism of epithelial chimerism after allogeneic hematopoietic cell transplantation
Authors: Waterhouse M, Themeli M, Bertz H, Zoumbos N, Finke J, Spyridonidis A.
Journal: Biol Blood Marrow Transplant (2011): 319

The exocytosis of fluorescent nanodiamond and its use as a long-term cell tracker
Authors: Fang CY, Vaijayanthimala V, Cheng CA, Yeh SH, Chang CF, Li CL, Chang HC.
Journal: Small (2011): 3363

The interplay between Leishmania promastigotes and human Natural Killer cells in vitro leads to direct lysis of Leishmania by NK cells and modulation of NK cell activity by Leishmania promastigotes
Authors: Lieke T, Nylen S, Eidsmo L, Schmetz C, Berg L, Akuffo H.
Journal: Parasitology (2011): 1898

Cell electrofusion visualized with fluorescence microscopy
Authors: Trontelj K, Usaj M, Miklavcic D.
Journal: J Vis Exp. (2010)

说明书
红色荧光示踪探针 CytoTrace CFDA.pdf

钙离子荧光探针Rhod-2,三钾盐 货号21067-AAT Bioquest荧光染料

上海金畔生物科技有限公司代理AAT Bioquest荧光染料全线产品,欢迎访问AAT Bioquest荧光染料官网了解更多信息。

钙离子荧光探针Rhod-2,三钾盐

钙离子荧光探针Rhod-2,三钾盐

钙离子荧光探针Rhod-2,三钾盐    货号21067 货号 21067 存储条件 在零下15度以下保存, 避免光照
规格 1 mg 价格 2604
Ex (nm) 553 Em (nm) 577
分子量 869.05 溶剂 Water
产品详细介绍

简要概述

钙离子荧光探针Rhod-2,三钾盐是美国AAT Bioquest生产的钙离子荧光探针,钙测量对于许多生物学研究至关重要。在结合Ca2 +后显示光谱响应的荧光探针使研究人员能够使用荧光显微镜,流式细胞仪,荧光光谱和荧光酶标仪来研究细胞内游离Ca2 +浓度的变化。长波长Rhod-2 Ca2 +指示剂是Fluo-3的有价值的替代品,可用于在具有高水平自发荧光的细胞和组织中进行实验。金畔生物是AAT Bioquest 的中国代理商,为您提供最优质的钙离子荧光探针Rhod-2,三钾盐。

点击查看光谱

钙离子篇:时间轴式讲解应用于钙离子检测的探针

产品说明书

钙指示剂AM Esters的使用

1.带有钙指示剂AM酯:

        AM酯是非极性酯,其易于穿过活细胞膜,并且通过活细胞内的细胞酯酶快速水解。AM酯广泛用于非侵入性地将各种极性荧光探针装载到活细胞中。但是,使用AM酯时必须小心,因为它们易于水解,特别是在溶液中。它们应在使用前重新配制成高质量的无水二甲基亚砜(DMSO)。DMSO储备溶液可以在-20℃下干燥储存并避光。在这些条件下,AM酯应稳定数月。以下是我们推荐的将Cal-520 AM,Cal-590 AM或Cal-630 AM酯加入活细胞的方案。该方案仅提供指南,实际应根据您的具体需求进行修改。

a)在高质量无水DMSO中制备2至5 mM Cal-520 AM,Cal-590 AM或Cal-630 AM酯的储备溶液。

b)在实验当天,将Cal-520 AM,Cal-590 AM或Cal-630 AM溶解在DMSO中或将等份的指示剂储备溶液解冻至室温。在Hanks和Hepes缓冲液(HHBS)或您选择的缓冲液(0.04%Pluronic®F-127)中制备10至20μM的染料工作溶液。细胞加载所需指示剂的确切浓度必须凭经验确定。

注意:非离子型洗涤剂Pluronic®F-127有时用于增加Cal-520 AM,Cal-590 AM或Cal-630 AM酯的水溶性。

c)如果您的细胞(如CHO细胞)含有有机阴离子转运蛋白,可将丙磺舒(1-2 mM)加入染料工作溶液中(最终浓度为0.5-1 mM)以减少渗漏去酯化指标。

d)将等体积的染料工作溶液(来自步骤b或c)加入细胞板中。

e)将染料加载板在细胞培养箱中孵育60至90分钟,然后在室温下将板孵育另外30分钟。

注意:孵育染料超过2小时可以为某些细胞系提供更好的信号强度。

f)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,如果适用)替换染料工作溶液,以去除多余的探针。

g)在Ex / Em = 490 / 525nm(对于Cal-520 AM),540 / 5000nm(对于Cal-590 AM)或600 / 640nm(对于Cal-630 AM)进行实验。

 

2.测量细胞内钙响应:

为了确定溶液的游离钙浓度或单波长钙指示剂的Kd,使用以下等式:

[Ca]free = Kd[F ─ Fmin]/Fmax ─ F]

其中F是实验钙水平下指示剂的荧光,Fmin是不存在钙时的荧光,Fmax是钙饱和探针的荧光。

        解离常数(Kd)是探针对钙的亲和力的量度。 与校准溶液相比,荧光指示剂的Ca结合和光谱性质在细胞环境中变化非常显着。 细胞内指标的原位反应校准通常产生显着高于体外测定的Kd值。 通过在离子载体如A-23187,4-溴A-23187和离子霉素存在下将加载的细胞暴露于受控的Ca2+缓冲液来进行原位校准。 或者,细胞透化剂如洋地黄皂苷或X-100可用于将指示剂暴露于细胞外培养基的受控Ca2+水平。

 

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