Recombinant Anti-Caspase-9 antibody [EPR18107] (ab202068)

False colour image of Western blot: Anti-Caspase-9 antibody [EPR18107] staining at 1/2000 dilution, shown in green; Mouse anti-CANX [CANX/1543] (ab238078) loading control staining at 1/20000 dilution, shown in red. In Western blot, ab202068 was shown to bind specifically to Caspase-9. A band was observed at 45 kDa in wild-type THP-1 cell lysates with no signal observed at this size in CASP9 knockout cell line ab276122 (knockout cell lysate ab284219). To generate this image, wild-type and CASP9 knockout THP-1 cell lysates were analysed. First, samples were run on an SDS-PAGE gel then transferred onto a nitrocellulose membrane. Membranes were blocked in 3 % milk in TBS-0.1 % Tween^® 20 (TBS-T) before incubation with primary antibodies overnight at 4 °C. Blots were washed four times in TBS-T, incubated with secondary antibodies for 1 h at room temperature, washed again four times then imaged. Secondary antibodies used were Goat anti-Rabbit IgG H&L (IRDye^® 800CW) preabsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye^® 680RD) preabsorbed (ab216776) at 1/20000 dilution.

Lane 1: Wild-type HAP1 cell lysate (20 µg)
Lane 2: Caspase-9 knockout HAP1 cell lysate (20 µg)
Lane 3: HeLa cell lysate (20 µg)
Lane 4: Jurkat cell lysate (20 µg)
Lanes 1 - 4: Merged signal (red and green). Green - ab202068 observed at 46 kDa. Red - loading control, ab8245, observed at 37 kDa.
ab202068 was shown to recognize Caspase-9 when Caspase-9 knockout samples were used, along with additional cross-reactive bands. Wild-type and Caspase-9 knockout samples were subjected to SDS-PAGE. ab202068 and ab8245 (loading control to GAPDH) were diluted at 1/2000 and 1/10 000 respectively and incubated overnight at 4°C. Blots were developed withGoat anti-Rabbit IgG H&L (IRDy^e® 800CW) preadsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye^® 680RD) preadsorbed (ab216776) secondary antibodies at 1/10,000 dilution for 1 h at room temperature before imaging.

Immunofluorescent analysis of 4% paraformaldehyde-fixed, 0.1% Triton X-100 permeabilized HeLa (Human epithelial cells from cervix adenocarcinoma) cells labeling Caspase-9 with ab202068 at 1/500 dilution, followed by Goat anti-rabbit IgG (Alexa Fluor® 488) (ab150077) secondary antibody at 1/500 dilution (green).

Confocal image showing cytoplasmic and nuclear staining on HeLa cell line. The expression increased after treatment with staurosporine (1uM) for 4 hours.

The nuclear counter stain is DAPI (blue). Tubulin is detected with ab7291 (anti-Tubulin mouse mAb) at 1/1000 dilution and ab150120 (AlexaFluor®594 Goat anti-Mouse secondary) at 1/500 dilution (red).

The negative controls are as follows:
-ve control 1: ab202067 at 1/500 dilution followed by ab150120 (AlexaFluor®594 Goat anti-Mouse secondary) at 1/500 dilution.
-ve control 2: ab7291 (anti-Tubulin mouse mAb) at 1/1000 dilution followed by ab150077 (Alexa Fluor®488 Goat Anti-Rabbit IgG H&L) at 1/500 dilution.

Immunohistochemical analysis of paraffin-embedded Human cervix carcinoma tissue labeling Caspase-9 with ab202068 at 1/300 dilution, followed by Goat Anti-Rabbit IgG H&L (HRP) (ab97051) secondary antibody at 1/500 dilution.

Cytoplasmic and nuclear staining on Human cervix carcinoma tissue is observed.

Counter stained with Hematoxylin.

Secondary antibody only control: Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (HRP) (ab97051) at 1/500 dilution.

Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.

Lane 1: Wild-type HAP1 cell lysate (20 µg)
Lane 2: Caspase-9 knockout HAP1 cell lysate (20 µg)
Lane 3: HeLa cell lysate (20 µg)
Lane 4: Jurkat cell lysate (20 µg)
Lanes 1 - 4: Merged signal (red and green).

Green - target observed at 46 kDa. Red - loading control, ab8245, observed at 37 kDa.

This western blot image is a comparison between ab202068 and a competitor's top cited rabbit polyclonal antibody.

Blocking/Dilution buffer: 5% NFDM/TBST.

Blocking/Dilution buffer: 5% NFDM/TBST.

Blocking/Dilution buffer: 5% NFDM/TBST.

Caspase-9 was immunoprecipitated from 1mg of HeLa (Human epithelial cells from cervix adenocarcinoma) treated with staurosporine 1uM for 4 hours whole cell lysate with ab202068 at 1/80 dilution.

Western blot was performed from the immunoprecipitate using ab202068 at 1/1000 dilution.

Anti-Rabbit IgG (HRP), specific to the non-reduced form of IgG was used as secondary antibody at 1/1500 dilution.

Lane 1: HeLa treated with staurosporine 1uM for 4 hours whole cell lysate10 µg (Input).

Lane 2: ab202068 IP in HeLa treated with staurosporine 1uM for 4 hours whole cell lysate.

Lane 3: Rabbit monoclonal IgG (ab172730) instead of ab202068 in HeLa treated with staurosporine 1uM for 4 hours whole cell lysate.
Blocking and dilution buffer and concentration: 5% NFDM/TBST.

Exposure time: 3 seconds.

Blocking/Dilution buffer: 5% NFDM/TBST.