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7319
EpCAM (VU1D9) Mouse mAb (Alexa Fluor® 594 Conjugate)
抗体偶联物
单克隆抗体

EpCAM (VU1D9) Mouse mAb (Alexa Fluor® 594 Conjugate) #7319

Citations (2)
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  1. IF
  2. F
Confocal immunofluorescent analysis of HT-29 (left) and HeLa (right) cells using EpCAM (VU1D9) Mouse mAb (Alexa Fluor® 594 Conjugate) (red). Actin filaments were labeled with Alexa Fluor® 488 phalloidin (green). Blue pseudocolor = DRAQ5® #4084 (fluorescent DNA dye).
Flow cytometric analysis of live NCI-H929 cells (blue, negative) and HT-29 cells (green, positive) using EpCAM (VU1D9) Mouse mAb (Alexa Fluor® 594 Conjugate) (solid lines) or a concentration- matched Mouse (MOPC-21) mAb IgG1 Isotype Control (Alexa Fluor® 594 Conjugate) #8527 (dashed lines).
To Purchase # 7319S
Cat. # Size Price Inventory
7319S
100 µl  (50 tests)

Supporting Data

REACTIVITY H
SENSITIVITY Endogenous
MW (kDa)
Source/Isotype Mouse IgG1

Application Key:

  • WB-Western Blot
  • IP-Immunoprecipitation
  • IHC-Immunohistochemistry
  • ChIP-Chromatin Immunoprecipitation
  • C&R-CUT&RUN
  • C&T-CUT&Tag
  • DB-Dot Blot
  • eCLIP-eCLIP
  • IF-Immunofluorescence
  • F-Flow Cytometry

Species Cross-Reactivity Key:

  • H-Human
  • M-Mouse
  • R-Rat
  • Hm-Hamster
  • Mk-Monkey
  • Vir-Virus
  • Mi-Mink
  • C-Chicken
  • Dm-D. melanogaster
  • X-Xenopus
  • Z-Zebrafish
  • B-Bovine
  • Dg-Dog
  • Pg-Pig
  • Sc-S. cerevisiae
  • Ce-C. elegans
  • Hr-Horse
  • GP-Guinea Pig
  • Rab-Rabbit
  • All-All Species Expected

Product Description

This Cell Signaling Technology antibody is conjugated to Alexa Fluor® 594 fluorescent dye and tested in-house for direct immunofluorescent analysis in human cells. The antibody is expected to exhibit the same species cross-reactivity as the unconjugated EpCAM (VU1D9) Mouse mAb #2929.

Product Usage Information

Application Dilution
Immunofluorescence (Immunocytochemistry) 1:50
Flow Cytometry (Fixed/Permeabilized) 1:50 - 1:200
Flow Cytometry (Live) 1:50 - 1:200

Storage

Supplied in PBS (pH 7.2), less than 0.1% sodium azide and 2 mg/ml BSA. Store at 4°C. Do not aliquot the antibody. Protect from light. Do not freeze.

Protocol

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Immunofluorescence (Immunocytochemistry)

A. Solutions and Reagents

NOTE: Prepare solutions with reverse osmosis deionized (RODI) or equivalently purified water.

  1. 20X Phosphate Buffered Saline (PBS): (9808) To prepare 1L 1X PBS: add 50 ml 20X PBS to 950 ml dH2O, mix. Adjust pH to 8.0.
  2. Formaldehyde: 16%, methanol free, Polysciences, Inc. (cat# 18814), use fresh and store opened vials at 4°C in dark, dilute in 1X PBS for use.
  3. Permeabilization Buffer (1X PBS/0.2% Triton X-100):
    To prepare 25 ml, add 2.5 ml 10X PBS, and 22.5 ml dH2O and mix well. While stirring, add 50 µl Triton X-100.
  4. Image-iT™ FX Signal Enhancer (#11932)
  5. Blocking Buffer (1X PBS / 5% normal serum / 0.3% Triton™ X-100): To prepare 10 ml, add 0.5 ml normal serum from the same species as the secondary antibody (e.g., Normal Goat Serum (#5425)) and 0.5 mL 20X PBS to 9.0 mL dH2O, mix well. While stirring, add 30 µl Triton™ X-100.
  6. Antibody Dilution Buffer (1X PBS / 1% BSA / 0.3% Triton X-100): To prepare 10 ml, add 30 µl Triton™ X-100 to 10 ml 1X PBS. Mix well then add 0.1 g BSA (9998), mix.
  7. Prolong® Gold AntiFade Reagent (#9071), Prolong® Gold AntiFade Reagent with DAPI (#8961).

B. Specimen Preparation - Cultured Cell Lines (IF-IC)

NOTE: Cells should be grown, treated, fixed, and stained directly in multi-well plates, chamber slides, or on coverslips.

  1. Aspirate liquid, then cover cells to a depth of 2–3 mm with 4% formaldehyde in 1X PBS.
    NOTE: Formaldehyde is toxic, use only in fume hood.
  2. Allow cells to fix for 15 minutes at room temperature.
  3. Aspirate fixative, rinse three times in 1X PBS for 5 minutes each.
  4. Proceed with Immunostaining (Section C).

C. Immunostaining

NOTE: All subsequent incubations should be carried out at room temperature unless otherwise noted in a humid light-tight box or covered dish/plate to prevent drying and fluorochrome fading.

  1. Permeabilize the cells in Permeabilization Buffer for 5 minutes at room temperature.
  2. Rinse three times in 1X PBS for 5 minutes each.
  3. Apply 3–4 drops of Image-iT™ FX Signal Enhancer (#11932) and incubate for 30 minutes at room temperature.
  4. Rinse three times with 1X PBS for 5 minutes each.
  5. Block specimen in Blocking Buffer for 60 minutes.
  6. While blocking, prepare primary antibody by diluting as indicated on product webpage in Antibody Dilution Buffer.
  7. Aspirate blocking solution, apply diluted primary antibody.
  8. Incubate overnight at 4°C.
  9. Rinse three times in 1X PBS for 5 minutes each.
  10. Coverslip slides with Prolong® Gold Antifade Reagent (#9071), Prolong® Gold AntiFade Reagent with DAPI (#8961).
  11. For best results, examine specimens immediately using appropriate excitation wavelength. For long-term storage, store slides flat at 4°C protected from light.

posted Februay 2011

Protocol Id: 6

Flow Cytometry, Methanol Permeabilization Protocol for Directly Conjugated Antibodies

A. Solutions and Reagents

All reagents required for this protocol may be efficiently purchased together in our Intracellular Flow Cytometry Kit (Methanol) #13593, or individually using the catalog numbers listed below.

NOTE: Prepare solutions with reverse osmosis deionized (RODI) or equivalent grade water.

  1. 1X Phosphate Buffered Saline (PBS): To prepare 1 L 1X PBS: add 100 ml 10X PBS (#12528) to 900 ml water mix.
  2. 4% Formaldehyde, Methanol-Free (#47746)
  3. 100% Methanol (#13604): Chill before use
  4. Antibody Dilution Buffer: Purchase ready-to-use Flow Cytometry Antibody Dilution Buffer (#13616), or prepare a 0.5% BSA PBS buffer by dissolving 0.5 g Bovine Serum Albumin (BSA) (#9998) in 100 ml 1X PBS. Store at 4°C.

NOTE: When including fluorescent cellular dyes in your experiment (including viability dyes, DNA dyes, etc.), please refer to the dye product page for the recommended protocol. Visit www.cellsignal.com for a full listing of cellular dyes validated for use in flow cytometry.

B. Fixation

NOTE: Adherent cells or tissue should be dissociated and in single-cell suspension prior to fixation.

NOTE: Optimal centrifugation conditions will vary depending upon cell type and reagent volume. Generally, 150-300g for 1-5 minutes will be sufficient to pellet the cells.

NOTE: If using whole blood, lyse red blood cells and wash by centrifugation prior to fixation.

NOTE: Antibodies targeting CD markers or other extracellular proteins may be added prior to fixation if the epitope is disrupted by formaldehyde and/or methanol. The antibodies will remain bound to the target of interest during the fixation and permeabilization process. However, note that some fluorophores (including PE and APC) are damaged by methanol and thus should not be added prior to permeabilization. Conduct a small-scale experiment if you are unsure.

  1. Pellet cells by centrifugation and remove supernatant.
  2. Resuspend cells in approximately 100 µl 4% formaldehyde per 1 million cells. Mix well to dissociate pellet and prevent cross-linking of individual cells.
  3. Fix for 15 min at room temperature (20-25°C).
  4. Wash by centrifugation with excess 1X PBS. Discard supernatant in appropriate waste container. Resuspend cells in 0.5-1 ml 1X PBS. Proceed to Permeabilization step.
    1. Alternatively, cells may be stored overnight at 4°C in 1X PBS.

C. Permeabilization

  1. Permeabilize cells by adding ice-cold 100% methanol slowly to pre-chilled cells, while gently vortexing, to a final concentration of 90% methanol.
  2. Permeabilize for a minimum of 10 min on ice.
  3. Proceed with immunostaining (Section D) or store cells at -20°C in 90% methanol.

D. Immunostaining

NOTE: Count cells using a hemocytometer or alternative method.

  1. Aliquot desired number of cells into tubes or wells. (Generally, 5x105 to 1x106 cells per assay.)
  2. Wash cells by centrifugation in excess 1X PBS to remove methanol. Discard supernatant in appropriate waste container. Repeat if necessary.
  3. Resuspend cells in 100 µl of diluted primary antibody, prepared in Antibody Dilution Buffer at a recommended dilution or as determined via titration.
  4. Incubate for 1 hr at room temperature. Protect from light.
  5. Wash by centrifugation in Antibody Dilution Buffer or 1X PBS. Discard supernatant. Repeat.
  6. Resuspend cells in 200-500 µl of 1X PBS and analyze on flow cytometer.

posted July 2009

revised June 2020

实验步骤编号:407

流式细胞术,针对直接结合抗体的活细胞实验步骤

A. 溶液与试剂

:使用反渗透去离子水 (RODI) 或同等级别的水配制溶液。

  1. 1 X 磷酸盐缓冲生理盐水 (PBS):要配制 1 L 1X PBS:将 100 ml 10X PBS (#12528) 添加到 900 ml 水,混合。
  2. 抗体稀释缓冲液:购买即用型流式细胞术抗体稀释缓冲液 (#13616),或在 100 ml 1x PBS 中溶解 0.5 g 牛血清白蛋白 (BSA) (#9998) 来配制 0.5 % BSA PBS 缓冲液。4°C 保存。

:在您的实验中加入荧光细胞染料(包括活力指示染料、DNA 染料等)时,请参考染料产品网页,了解建议的实验步骤。访问 www.cellsignal.com,了解经验证用于流式细胞术的细胞染料完整列表。

B. 免疫染色

:使用血细胞计数器或备选方法计数细胞。

:如果使用全血,则需裂解红血细胞,并在免疫染色之前通过离心分离洗涤。

:人 Fc 受体与兔 IgG 发生交叉反应。当感兴趣的细胞表达高水平的 Fc 受体蛋白(例如,巨噬细胞/单核细胞谱系)时,在用兔抗体进行免疫染色之前,用人 Fc 块预孵育活细胞。

:最佳离心条件会根据细胞类型和试剂容量变动。一般,1-5 分钟 150-300g 将足以使细胞沉淀下来。

  1. 将所需数目的细胞分装入试管或小孔中。(通常,每次测定 5 x 105 至 1 x 106 个细胞。)
  2. 通过离心使细胞沉淀下来,移除上清液。
  3. 在 100 µl 稀释的一抗中重悬细胞,这种一抗按建议的稀释度或如通过滴定所确定那样以抗体稀释缓冲液配制。
  4. 在冰上孵育 30 分钟至 1 小时。避光。
  5. 用抗体稀释缓冲液进行离心洗涤。弃去上清液。重复。
  6. 在 200-500 μl 抗体稀释缓冲液中重悬细胞后用流式细胞分析仪进行分析。

发布​时间 2017 年 6 月

修订时间 2022 年 1 月

实验步骤编号:1504

特异性/灵敏度

EpCAM (VU1D9) Mouse mAb (Alexa Fluor® 594 Conjugate) 可检测内源水平的 EpCAM 总蛋白。

物种反应性:

来源/纯化

使用 NCI-H69 小细胞肺癌细胞对动物进行免疫接种来产生单克隆抗体。

背景

上皮细胞黏附和激活分子 (EpCAM/CD326) 是一种跨膜糖蛋白,能介导多数上皮细胞基底外侧表面的 Ca2+ 非依赖性同嗜性黏附。EpCAM 不在成体鳞状上皮细胞中表达,但在腺癌和鳞状细胞癌中高度表达 (1)。研究表明,EpCAM 是一种早期肿瘤相关抗原,长期以来用作上皮和肿瘤组织的一种标志物。研究人员发现,EpCAM 在癌细胞中高表达(2,3 中已论述)。

有限使用

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仅供研究使用。不得用于诊断流程。
Cell Signaling Technology 是 Cell Signaling Technology, Inc. 的商标。
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