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9579
Cleaved Caspase-3 (Asp175) (D3E9) Rabbit mAb
Primary Antibodies
Monoclonal Antibody
R
Recombinant

Cleaved Caspase-3 (Asp175) (D3E9) Rabbit mAb #9579

Citations (230)
Filter:
  1. IHC
  2. IF
  3. F
Immunohistochemical analysis of paraffin-embedded Jurkat cell pellets, untreated (left) or etoposide-treated (right), using Cleaved Caspase-3 (Asp175) (D3E9) Rabbit mAb on SignalSlide® Cleaved Caspase-3 (Asp175) IHC Controls #8104.
Immunohistochemical analysis of paraffin-embedded HT-29 xenograft using Cleaved Caspase-3 (Asp175) (D3E9) Rabbit mAb in the presence of control peptide (left) or Cleaved Caspase-3 (Asp175) Blocking Peptide #1050 (right).
Immunohistochemical analysis of paraffin-embedded human malignant stromal tumor using Cleaved Caspase-3 (Asp175) (D3E9) Rabbit mAb.
Immunohistochemical analysis of paraffin-embedded human colon adenocarcinoma using Cleaved Caspase-3 (Asp175) (D3E9) Rabbit mAb.
Immunohistochemical analysis of paraffin-embedded human metastastic B-cell non-Hodgkin's lymphoma using Cleaved Caspase-3 (Asp175) (D3E9) Rabbit mAb.
Confocal immunofluorescent analysis of HeLa (upper) and NIH/3T3 (lower) cells, untreated (left) or treated with Staurosporine #9953 (1 μM, 4 hr; right), using Cleaved Caspase-3 (Asp175) (D3E9) Rabbit mAb (green). Actin filaments were labeled with DY-554 phalloidin (red). Blue pseudocolor = DRAQ5® #4084 (fluorescent DNA dye).
Flow cytometric analysis of Jurkat cells, untreated (blue) or treated with Etoposide #2200 (25 μM, overnight ; green) using Cleaved Caspase-3 (Asp175) (D3E9) Rabbit mAb (solid lines) or concentration-matched Rabbit (DA1E) mAb IgG XP® Isotype Control #3900 (dashed lines). Anti-rabbit IgG (H+L), F(ab')2 Fragment (Alexa Fluor® 488 Conjugate) #4412 was used as a secondary antibody.

Supporting Data

REACTIVITY H M
SENSITIVITY Endogenous
MW (kDa)
Source/Isotype Rabbit IgG

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 Usage Information

Application Dilution
Immunohistochemistry (Paraffin) 1:250
Immunofluorescence (Immunocytochemistry) 1:1600 - 1:6400
Flow Cytometry (Fixed/Permeabilized) 1:200

Storage

Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibody.

For a carrier free (BSA and azide free) version of this product see product #74860

Protocol

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Immunohistochemistry (Paraffin)

A. Solutions and Reagents

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

  1. Xylene.
  2. Ethanol, anhydrous denatured, histological grade (100% and 95%).
  3. Deionized water (dH2O).
  4. Hematoxylin (optional).
  5. Wash Buffer:
    1. 1X Tris Buffered Saline with Tween® 20 (TBST): To prepare 1L 1X TBST add 100 ml 10X Tris Buffered Saline with Tween® 20 (#9997) to 900 ml dH20, mix.
  6. SignalStain® Antibody Diluent (#8112).
  7. 1X Citrate Unmasking Solution: To prepare 250 mL of 1X citrate unmasking solution, dilute 25 ml of SignalStain® Citrate Unmasking Solution (10X) (#14746) with 225 mL of dH2O.
  8. 3% Hydrogen Peroxide: To prepare 100 ml, add 10 ml 30% H2O2 to 90 ml dH2O.
  9. Blocking Solution: TBST/5% Normal Goat Serum or 1X Animal-Free Blocking Solution.
    1. TBST/5% Normal Goat Serum: to 5 ml 1X TBST, add 250 µl Normal Goat Serum (#5425).
    2. 1X Animal-Free Blocking Solution: to 4 mL of dH2O add 1 ml of Animal-Free Blocking Solution (5X) (#15019).
  10. Detection System: SignalStain® Boost IHC Detection Reagents (HRP, Rabbit #8114).
  11. Substrate: Vector® NovaRED™ (Vector Laboratories).
  12. Hematoxylin: Hematoxylin (#14166).
  13. Mounting Medium: SignalStain® Mounting Medium (#14177).

B. Deparaffinization/Rehydration

NOTE: Do not allow slides to dry at any time during this procedure.

  1. Deparaffinize/hydrate sections:
    1. Incubate sections in three washes of xylene for 5 min each.
    2. Incubate sections in two washes of 100% ethanol for 10 min each.
    3. Incubate sections in two washes of 95% ethanol for 10 min each.
  2. Wash sections two times in dH2O for 5 min each.

C. Antigen Unmasking

For Citrate: Heat slides in a microwave submersed in 1X citrate unmasking solution until boiling is initiated; follow with 10 min at a sub-boiling temperature (95°-98°C). Cool slides on bench top for 30 min.

D. Staining

  1. Wash sections in dH2O three times for 5 min each.
  2. Incubate sections in 3% hydrogen peroxide for 10 min.
  3. Wash sections in dH2O two times for 5 min each.
  4. Wash sections in wash buffer for 5 min.
  5. Block each section with 100–400 µl of preferred blocking solution for 1 hr at room temperature.
  6. Remove blocking solution and add 100–400 µl primary antibody diluted in SignalStain® Antibody Diluent (#8112) to each section. Incubate overnight at 4°C.
  7. Equilibrate SignalStain® Boost Detection Reagent (HRP, Rabbit #8114) to room temperature.
  8. Remove antibody solution and wash sections with wash buffer three times for 5 min each.
  9. Cover section with 1–3 drops SignalStain® Boost Detection Reagent (HRP, Rabbit #8114) as needed. Incubate in a humidified chamber for 30 min at room temperature.
  10. Wash sections three times with wash buffer for 5 min each.
  11. Prepare Vector® NovaRED™ per manufacturer's recommendations.
  12. Apply 100-400 µl substrate to each section and monitor closely. 1-10 minutes generally provides an acceptable staining intensity.
  13. Immerse slides in dH2O.
  14. If desired, counterstain sections with hematoxylin (#14166).
  15. Wash sections in dH2O two times for 5 min each.
  16. Dehydrate sections:
    1. Incubate sections in 95% ethanol two times for 10 sec each.
    2. Repeat in 100% ethanol, incubating sections two times for 10 sec each.
    3. Repeat in xylene, incubating sections two times for 10 sec each.
  17. Mount sections with coverslips and mounting medium (#14177).

DETECTION REAGENT/SUBSTRATE COMPATIBILITY
RECOMMENDED
DETECTION REAGENTS
SignalStain® Boost IHC Detection Reagent (HRP, Rabbit) #8114 SignalStain® Boost IHC Detection Reagent (AP, Rabbit) #18653
COMPATIBLE
CHROMOGEN
SignalStain® DAB Substrate Kit #8059 SignalStain® Vibrant Red Alkaline Phosphatase Substrate Kit #76713
SignalStain® Vivid Purple Peroxidase Substrate Kit #96632  

NOTE: Use of detection reagents other than those specified in this protocol may require further optimization of the primary antibody to account for the different sensitivities of the detection reagents.


posted February 2010

revised June 2020

Protocol Id: 300

Immunofluorescence (Immunocytochemistry)

A. Solutions and Reagents

Achieve higher quality immunofluorescent images using the efficient and cost-effective, pre-made reagents in our #12727 Immunofluorescence Application Solutions Kit

NOTE: Prepare solutions with reverse osmosis deionized (RODI) or equivalent grade 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. 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.
  4. 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.
  5. Recommended Fluorochrome-conjugated Anti-Rabbit secondary antibodies:

  6. 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 diluted in 1X PBS.

    NOTE: Formaldehyde is toxic, use only in a fume hood.

  2. Allow cells to fix for 15 min at room temperature.
  3. Aspirate fixative, rinse three times in 1X PBS for 5 min 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. Block specimen in Blocking Buffer for 60 min.
  2. While blocking, prepare primary antibody by diluting as indicated on product webpage in Antibody Dilution Buffer.
  3. Aspirate blocking solution, apply diluted primary antibody.
  4. Incubate overnight at 4°C.
  5. Rinse three times in 1X PBS for 5 min each.
  6. Incubate specimen in fluorochrome-conjugated secondary antibody diluted in Antibody Dilution Buffer for 1–2 hr at room temperature in the dark.
  7. Rinse three times in 1X PBS for 5 min each.
  8. Coverslip slides with Prolong® Gold Antifade Reagent (#9071) or Prolong® Gold Antifade Reagent with DAPI (#8961).
  9. For best results, allow mountant to cure overnight at room temperature. For long-term storage, store slides flat at 4°C protected from light.

posted November 2006

revised November 2013

Protocol Id: 24

Flow Cytometry, Methanol Permeabilization Protocol for Rabbit 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.
  5. Recommended Anti-Rabbit secondary antibodies::
    • Anti-Rabbit IgG (H+L), F(ab')2 Fragment (Alexa Fluor® 488 Conjugate) #4412
    • Anti-Rabbit IgG (H+L), F(ab')2 Fragment (Alexa Fluor® 594 Conjugate) #8889
    • Anti-Rabbit IgG (H+L), F(ab')2 Fragment (Alexa Fluor® 647 Conjugate) #4414
    • Anti-Rabbit IgG (H+L), F(ab')2 Fragment (PE Conjugate) #79408

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.
  5. Wash by centrifugation in Antibody Dilution Buffer or 1X PBS. Discard supernatant. Repeat.
  6. Resuspend cells in 100 µl of diluted fluorochrome-conjugated secondary antibody (prepared in Antibody Dilution Buffer at the recommended dilution).
  7. Incubate for 30 min at room temperature. Protect from light.
  8. Wash by centrifugation in Antibody Dilution Buffer or 1X PBS. Discard supernatant. Repeat.
  9. Resuspend cells in 200-500 µl of 1X PBS and analyze on flow cytometer.

posted July 2009

revised June 2020

Protocol Id: 404

Specificity / Sensitivity

Cleaved Caspase-3 (Asp175) (D3E9) Rabbit mAb recognizes endogenous levels of caspase-3 protein only when cleaved at Asp175. This antibody is preferred for immunofluorescence, flow cytometry, and immunohistochemistry applications. This antibody detects non-specific caspase substrates by western blot. Non-specific labeling may be observed by immunofluorescence in specific sub-types of healthy cells in fixed-frozen tissues (e.g. pancreatic alpha-cells). Nuclear background may be observed in rat and monkey samples.

Species Reactivity:

Human, Mouse

Species predicted to react based on 100% sequence homology:

Rat, Bovine, Dog, Pig

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Asp175 of human caspase-3 protein.

Background

Caspase-3 (CPP-32, Apopain, Yama, SCA-1) is a critical executioner of apoptosis, as it is either partially or totally responsible for the proteolytic cleavage of many key proteins, such as the nuclear enzyme poly (ADP-ribose) polymerase (PARP) (1). Activation of caspase-3 requires proteolytic processing of its inactive zymogen into activated p17 and p12 fragments. Cleavage of caspase-3 requires the aspartic acid residue at the P1 position (2).

Pathways

Explore pathways related to this product.

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