Annexin V Conjugates for Apoptosis Detection
Annexin V Conjugates for Apoptosis Detection
Invitrogen™

Annexin V Conjugates for Apoptosis Detection

アネキシンVスタンドアロンAlexa Fluor、APC、Pacific Blue、PE、FITC、およびフローサイトメトリーを使用したビオチンコンジュゲートでアポトーシスの初期段階を検出します。
製品番号(カタログ番号)励起/発光フローサイトメーターレーザーラインコンジュゲート
A35111565/578488、532、561PE
A13201495/519488Alexa Fluor 488
A13199494/518488FITC
A13202578/603532、561Alexa Fluor 568
A13203590/617532Alexa Fluor 594
A13204ビオチン-X
A23202346/442UVAlexa Fluor 350
A23204650/665633~637Alexa Fluor 647
A35108555/565532、561Alexa Fluor 555
A35109679/702633~637Alexa Fluor 680
A35110650/660633~637APC(アロフィコシアニン)
A35122410/455405Pacific Blue
製品番号(カタログ番号) A35111
価格(JPY)
117,900
Each
お問い合わせください ›
励起/発光:
565/578
フローサイトメーターレーザーライン:
488、532、561
コンジュゲート:
PE
アポトーシス検出用のアネキシンVスタンドアロンコンジュゲートにより、初期の細胞アポトーシスを迅速かつ信頼性の高い方法で検出できます。アネキシンVコンジュゲートは、フローサイトメトリーを用いたアポトーシス細胞と非アポトーシス細胞の蛍光シグナル強度の差を最大100倍にします。
アネキシンVはホスファチジルセリン(PS)に対する高い親和性を有しており、アポトーシスを受けている細胞の外側のリーフレットに曝露されます。この親和性により、蛍光標識アネキシンV試薬はアポトーシス研究で一般的に使用されます。

アネキシンVコンジュゲートは、アポトーシスの中間期指標であるホスファチジルセリンの外在化を研究するための迅速で信頼性の高い検出法を提供します。フローサイトメトリーで測定した当社の蛍光アネキシンVコンジュゲートで染色したアポトーシス細胞と非アポトーシス細胞の蛍光強度の差は、通常約100倍です。

Nexins Research社との提携により、当社はAlexa Fluor 350、488、555、568、594、647および680アネキシンVコンジュゲート、アネキシンV APC、Biotin-X、FITC、Pacific Blue、およびPEコンジュゲートなどの最高レベルのアネキシンVコンジュゲート提供します。蛍光性の高いアネキシンVコンジュゲートは、アポトーシスの初期指標の1つであるホスファチジルセリンの外在化を研究するための迅速で信頼性の高い検出法を提供します。

アネキシンV Pacific Blueコンジュゲートはバイオレット励起性であり、バイオレットレーザーを備えた装置や、緑色または赤色蛍光色素を含むマルチカラー実験に最適です。

当社のアネキシンVコンジュゲートの利点:
•より明るいシグナルを得るためのInvitrogen Alexa FluorおよびeFluor色素に対するコンジュゲート
•利用可能なすべてのレーザー用のコンジュゲート
•独立した試薬または使いやすいキットとして利用可能

アポトーシス細胞を検出するためのアネキシンV染色は、生細胞および組織でのみ可能です。サンプルを染色後に固定する場合は、シグナルの一時的な保持を実現するために特定の条件が必要です。これには、アルコールを含まないアルデヒドベースの固定法の使用、Ca2+を含むバッファーの使用、界面活性剤/界面活性剤(洗剤)の回避などが挙げられます。また、アポトーシスアッセイにおけるホスファチジルセリンとアネキシンVとの結合を促進する濃縮アネキシン結合バッファーもご用意しています。

For Research Use Only. Not for use in diagnostic procedures.
仕様
Red
概要アネキシンV、PEコンジュゲート(R-PEアネキシンV)(アネキシン産物-アネキシンV04の代替)
励起/発光565/578
フローサイトメーターレーザーライン488、532、561
使用対象 (装置)フローサイトメーター
形状溶液
キット内容1バイアルのアネキシンV、R-PEコンジュゲートを含みます。
反応数50
製品タイプアネキシンVコンジュゲート
数量250 μL
出荷条件湿氷
コンジュゲートPE
Unit SizeEach
組成および保存条件
冷蔵庫(2℃~8℃)に保存し、遮光してください。

よくあるご質問(FAQ)

I trypsinized my adherent cells and labeled with annexin V, and now my flow data is showing a high percentage of apoptotic cells even for control, untreated cells. What is the problem?

Trypsinization or mechanical scraping of cells temporarily disrupts the plasma membrane, allowing annexin V to bind phosphatidylserine on the cytoplasmic surface of the cell membrane and thus leading to false positive staining. Allow the cells to recover for about 30 minutes in optimal cell culture conditions and medium after trypsinizing/scraping so that they can recover their membrane integrity before staining. For lightly adherent cell lines, such as HeLa and NIH 3T3, another option is to use non-enzyme treatments like Gibco Cell Dissociation Buffer (Cat. No. 13151014).

Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.

Can I detect annexin V staining in an imaging assay?

Annexin V staining is not typically used in imaging experiments; it is a better reagent for flow cytometry analysis. All cells will stain to some extent, so it can be difficult to distinguish a relatively bright annexin V-stained cell from a dimmer non-apoptotic cell. Caspase activation, detected using our CellEvent Caspase 3/7 or Image-iT LIVE Caspase detection kits, is a better method for detecting apoptosis in an imaging assay.

Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.

When should I stain adherent cells with annexin V for flow cytometric analysis? Before or after I trypsinize them?

Trypsinize first and then allow the cells to recover about 30 minutes in optimal cell culture conditions and medium before staining with annexin V conjugates. Trypsinization or mechanical scraping of cells temporarily disrupts the plasma membrane, allowing for annexin V to bind phosphatidylserine on the cytoplasmic surface of the cell membrane and thus leading to false positive staining. For lightly adherent cell lines such as HeLa and NIH 3T3, you could use a less harsh (non-enzymatic) dissociation product like Gibco Cell Dissociation Buffer (Cat. No. 13151014).

Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.

Can I fix my cells after annexin V labeling?

Annexin V staining is best analyzed on live cells. If you need to fix your cells for analysis, then fix in 3.7% formaldehyde in PBS containing calcium and magnesium to maintain binding during fixation. The signal will not be retained after permeabilization, thus annexin V staining is not compatible with internal antibody labeling.

Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.

I am trying to label adherent cells with annexin V and am finding that everything is getting labeled. How can I fix this?

Treating cells with trypsin or other reagents to detach adherent cells causes damage to the membrane, such that cells will be labeled with annexin V. The best way to avoid this problem is to allow your cells to recover for 30-45 min in the incubator. Swirl the tube/plate/flask every few minutes to prevent re-attachment. After this recovery period, you can label your cells with annexin V and analyze by flow cytometry.

Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.

引用および参考文献 (21)

引用および参考文献
Abstract
Human fetal retinal pigment epithelial cells induce apoptosis in the T-cell line Jurkat.
Authors:Farrokh-Siar L, Rezai KA, Semnani RT, Patel SC, Ernest JT, Peterson EJ, Koretzky GA, van Seventer GA
Journal:Invest Ophthalmol Vis Sci
PubMed ID:10359333
'PURPOSE: To investigate the mechanism(s) involved in human fetal retinal pigment epithelium (HFRPE)-mediated T-cell death. METHODS: Pure HFRPE cells were isolated and cultured. Normal and interferon (IFN)-gamma-activated HFRPE from early and late in vitro passages were incubated with cells from the human T-cell leukemia line Jurkat (Jkt). Cultures were pulsed ... More
High-resolution mapping reveals topologically distinct cellular pools of phosphatidylserine.
Authors:Fairn GD, Schieber NL, Ariotti N, Murphy S, Kuerschner L, Webb RI, Grinstein S, Parton RG,
Journal:J Cell Biol
PubMed ID:21788369
'Phosphatidylserine (PS) plays a central role in cell signaling and in the biosynthesis of other lipids. To date, however, the subcellular distribution and transmembrane topology of this crucial phospholipid remain ill-defined. We transfected cells with a GFP-tagged C2 domain of lactadherin to detect by light and electron microscopy PS exposed ... More
Cigarette smoke extract induces oxidative stress and apoptosis in human lung fibroblasts.
Authors:Carnevali S, Petruzzelli S, Longoni B, Vanacore R, Barale R, Cipollini M, Scatena F, Paggiaro P, Celi A, Giuntini C
Journal:Am J Physiol Lung Cell Mol Physiol
PubMed ID:12547733
'Cigarette smoke is a mixture of chemicals having direct and/or indirect toxic effects on different lung cells. We investigated the effect of cigarette smoke on human lung fibroblasts (HFL-1) oxidation and apoptosis. Cells were exposed to various concentrations (1, 5, and 10%) of cigarette smoke extract (CSE) for 3 h, ... More
Pseudomonas aeruginosa-induced apoptosis is defective in respiratory epithelial cells expressing mutant cystic fibrosis transmembrane conductance regulator.
Authors:Cannon CL, Kowalski MP, Stopak KS, Pier GB
Journal:Am J Respir Cell Mol Biol
PubMed ID:12878584
'Chronic lung infection with Pseudomonas aeruginosa constitutes the most severe manifestation of cystic fibrosis, a scenario that results from defects in early clearance of the microbe. Early clearance involves epithelial cell ingestion of bacteria, rapid activation of nuclear factor-kappa B and cellular desquamation within minutes of P. aeruginosa infection, processes ... More
N- and O-glycans modulate galectin-1 binding, CD45 signaling, and T cell death.
Authors:Earl LA, Bi S, Baum LG,
Journal:J Biol Chem
PubMed ID:19920154
'Galectin-1, a beta-galactoside-binding protein highly expressed in the thymus, induces apoptosis of specific thymocyte subsets and activated T cells. Galectin-1 binds to N- and O-glycans on several glycoprotein receptors, including CD7, CD43, and CD45. Here we show that galectin-1 signaling through CD45, which carries both N- and O-glycans, is regulated ... More