All lanes : Anti-TNF alpha antibody [EPR20972] (ab215188) at 1/1000 dilution

Lane 1 : Untreated RAW 264.7 (mouse macrophage cell line transformed with Abelson murine leukemia virus), whole cell lysate
Lane 2 : Untreated RAW 264.7 (mouse macrophage cell line transformed with Abelson murine leukemia virus) treated with 100 ng/ml lipopolysaccharides (LPS) for 7 hours with addition of 1 µg/ml brefeldin A (BFA) for the last 3 hours, whole cell lysate

Lysates/proteins at 10 µg per lane.

Secondary
All lanes : Goat Anti-Rabbit IgG H&L (HRP) (ab97051) at 1/100000 dilution

Developed using the ECL technique.

Predicted band size: 26 kDa
Observed band size: 17,26,33 kDa why is the actual band size different from the predicted?


Exposure time: 15 seconds

Blocking/Dilution buffer: 5% NFDM/TBST.

Immunofluorescent analysis of 4% paraformaldehyde-fixed, 0.1% Triton X-100 permeabilized RAW 264.7 (mouse macrophage cell line transformed with Abelson murine leukemia virus) cells, untreated or treated with 100 ng/ml lipopolysaccharides (LPS) for 7 hours with addition of 1 μg/ml brefeldin A (BFA) for the last 3 hours labeling TNF alpha with ab215188 at 1/100 dilution, followed by Goat Anti-Rabbit IgG H&L (Alexa Fluor^® 488) (ab150077) secondary antibody at 1/1000 dilution (green). Cytoplasmic staining was increased on RAW 264.7 cells when treated with 100 ng/ml lipopolysaccharides (LPS) for 7 hours with addition of 1 μg/ml brefeldin A (BFA) for the last 3 hours.

The nuclear counter stain is DAPI (blue). Tubulin is detected with Anti-alpha Tubulin antibody [DM1A] - Microtubule Marker (Alexa Fluor^® 594) (ab195889) (red) at 1/200 dilution.

Secondary antibody only control: Used PBS instead of primary antibody, secondary antibody is Goat Anti-Rabbit IgG H&L (Alexa Fluor^® 488) (ab150077) secondary antibody at 1/1000 dilution.

Flow cytometric analysis of 4% paraformaldehyde-fixed, 0.1% Tween-20 permeabilized mouse splenocytes treated with 20 ng/ml PMA, 1 μg/ml Ionomycin and 10 μM Brefeldin A for 6 hours labeling TNF alpha with ab215188 at 1/600 dilution (right panel) compared with a Rabbit IgG, monoclonal [EPR25A] - Isotype Control (ab172730) (left panel). Goat Anti-Rabbit IgG H&L (Alexa Fluor^® 488) at 1/2000 dilution was used as the secondary antibody.

Cells were surface stained with anti-mouse CD3, fixed with 4% PFA for 10 minutes, then permeabilized with 0.1% Tween-20 and intracellular stained with anti-rabbit IgG and ab215188. TNF alpha is mainly expressed in T cells (CD3+ population) while only a small population of CD3- cells can express TNF-alpha.

All lanes : Anti-TNF alpha antibody [EPR20972] (ab215188) at 1/1000 dilution

Lane 1 : THP-1 (human monocytic leukemia cell line) differentiated with 100 nM TPA overnight, whole cell lysate
Lane 2 : THP-1 (human monocytic leukemia cell line) differentiated with 100 nM TPA overnight, then treated with 100 ng/ml lipopolysaccharides (LPS) for 7 hours with addition of 1 µg/ml brefeldin A (BFA) for the last 3 hours, whole cell lysate

Lysates/proteins at 10 µg per lane.

Secondary
All lanes : Goat Anti-Rabbit IgG H&L (HRP) (ab97051) at 1/50000 dilution

Developed using the ECL technique.

Predicted band size: 26 kDa
Observed band size: 26 kDa


Exposure time: 3 minutes

Blocking/Dilution buffer: 5% NFDM/TBST.

TNF alpha was immunoprecipitated from 0.35 mg of RAW 264.7 (mouse macrophage cell line transformed with Abelson murine leukemia virus) treated with 100 ng/ml lipopolysaccharides (LPS) for 7 hours with addition of 1 μg/ml brefeldin A (BFA) for the last 3 hours, whole cell lysate with ab215188 at 1/30 dilution. Western blot was performed from the immunoprecipitate using ab215188 at 1/1000 dilution. VeriBlot for IP Detection Reagent (HRP) (ab131366), was used for detection at 1/10,000 dilution

Lane 1: RAW 264.7 treated with 100 ng/ml lipopolysaccharides (LPS) for 7 hours with addition of 1 μg/ml brefeldin A (BFA) for the last 3 hours, whole cell lysate 10 µg (Input). 

Lane 2: ab215188 IP in RAW 264.7 treated with 100 ng/ml lipopolysaccharides (LPS) for 7 hours with addition of 1 μg/ml brefeldin A (BFA) for the last 3 hours, whole cell lysate (+). 

Lane 3: Rabbit monoclonal IgG (ab172730) instead of ab215188 in RAW 264.7 treated with 100 ng/ml lipopolysaccharides (LPS) for 7 hours with addition of 1 μg/ml brefeldin A (BFA) for the last 3 hours, whole cell lysate (-).

Blocking and dilution buffer and concentration: 5% NFDM/TBST.

Exposure time: 3 seconds.