Recombinant Anti-S100A4 antibody [EPR14639(2)] (ab197896)

False colour image of Western blot: Anti-S100A4 antibody [EPR14639(2)] staining at 1/1000 dilution, shown in green;loading control ab7291 (Mouse anti-Alpha Tubulin [DM1A]) staining at 1/20000 dilution, shown in red. In Western blot, ab197896 was shown to bind specifically to S100A4. A band was observed at 11 kDa in wild-type HeLa and A549 cell lysates with no signal observed at this size in S100A4 knockout HeLa cell line ab265709 (knockout cell lysate ab257046) and S100A4 knockout A549 cell line ab261865 (knockout cell lysate ab261674). To generate this image, wild-type and S100A4 knockout HeLa and S100A4 knockout A549 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.

Lanes 1 - 4: Merged signal (red and green). Green - ab197896 observed at 12 kDa. Red - loading control, ab8245, observed at 37 kDa.

ab197896 was shown to recognize S100A4 in wild-type A549 cells as signal was lost at the expected MW in S100A4 knockout cells. Additional cross-reactive bands were observed in the wild-type and knockout cells. Wild-type and S100A4 knockout samples were subjected to SDS-PAGE. Ab197896 and ab8245 (Mouse anti GAPDH loading control) were incubated overnight at 4°C at 1/1000 dilution and 1/20000 dilution respectively. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye^® 800CW) preabsorbed ab216773 and Goat anti-Mouse IgG H&L (IRDye^® 680RD) preabsorbed ab216776 secondary antibodies at 1/20000 dilution for 1 hour at room temperature before imaging.

Lanes 1 - 2: Merged signal (red and green). Green - ab197896 observed at 11 kDa. Red - loading control ab7291 (Mouse anti-Alpha Tubulin [DM1A]) observed at 55 kDa.

ab197896 was shown to react with S100A4 in wild-type HeLa cells in Western blot with loss of signal observed in S100A4 knockout cell line ab265709 (S100A4 knockout cell lysate ab257046). Wild-type HeLa and S100A4 knockout cell lysates were subjected to SDS-PAGE. Membranes were blocked in 3 % milk in TBS-T (0.1 % Tween^®) before incubation with ab197896 and ab7291 (Mouse anti-Alpha Tubulin [DM1A]) overnight at 4 °C at a 1 in 1000 dilution and a 1 in 20000 dilution respectively. Blots were incubated with Goat anti-Rabbit IgG H&L (IRDye^® 800CW) preabsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye^® 680RD) preabsorbed (ab216776) secondary antibodies at 1 in 20000 dilution for 1 h at room temperature before imaging.

Lanes 1 - 2: Merged signal (red and green). Green - ab197896 observed at 12 kDa. Red - loading control ab8245 observed at 37 kDa.

 ab197896 Recombinant Anti-S100A4 antibody [EPR14639(2)] was shown to specifically react with S100A4 in wild-type HeLa cells. Loss of signal was observed when knockout cell line ab261758 (knockout cell lysate ab257045) was used. Wild-type and S100A4 knockout samples were subjected to SDS-PAGE. ab197896 and Anti-alpha Tubulin antibody [EP1332Y] - Microtubule Marker (ab52866) were incubated overnight at 4°C at 1 in 1000 dilution and 1 in 20000 dilution respectively. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye^® 800CW) preadsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye^® 680RD) preadsorbed (ab216776) secondary antibodies at 1 in 20000 dilution for 1 hour at room temperature before imaging.

Immunohistochemical analysis of paraffin-embedded Rat spleen tissue labeling S100A4 with ab197896 at 1/2000 dilution (0.376 μg/ml) followed by a ready to use Rabbit specific IHC polymer detection kit HRP/DAB (ab209101). Positive staining on lymphocytes of rat spleen.The section was incubated with ab197896 for 30 mins at room temperature. The immunostaining staining was performed on a Leica Biosystems BOND^® RX instrument. Counterstained with Hematoxylin. Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0, epitope retrieval solution 2) for 20 mins.

Secondary antibody only control: Used PBS instead of primary antibody, secondary antibody is a ready to use Rabbit specific IHC polymer detection kit HRP/DAB (ab209101).

Immunohistochemical analysis of paraffin-embedded Human gastric carcinoma tissue labeling S100A4 using ab197896 at 1/2000 dilution. Goat Anti-Rabbit IgG H&L (HRP) ab97051 was used as a secondary antibody at 1/500 dilution. Cells were counterstained with Hematoxylin. 

Inset image: negative control obtained using PBS instead of ab197896 and secondary antibody only.
Note: Cytoplasm and nuclear staining on human gastric carcinoma tissue was observed.

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

Blocking/dilution buffer: 5% NFDM/TBST

Intracellular Flow Cytometry analysis of Jurkat cells labelling S100A4 with ab197896 at 1/250 (red). Cells were fixed with 4% paraformaldehyde and permeabilized with 90% methanol. An Alexa Fluorr^® 488-conjugated goat anti-rabbit IgG (1/2000) was used as the secondary antibody. Black - Isotype control, rabbit monoclonal IgG. Blue - Unlabelled control, cells without incubation with primary and secondary antibodies. 

ab197896 at 1/40 immunoprecipitating S100A4 in A549 whole cell lysate observed at 12 KDa.

Lane 1 (input): A549 whole cell lysate 10μg

Lane 2 (+): ab197896 + A549 whole cell lysate.

Lane 3 (-): Rabbit monoclonal IgG (ab172730) instead of ab197896 in A549 whole cell lysate

For western blotting, Panel A: ab197896, 1:1000; Panel B: ab124805, 1:1000 and anti-rabbit IgG (HRP), specific to the non-reduced form of IgG was used as the secondary antibody (1/1500).

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

Immunohistochemical analysis of paraffin-embedded Human cervix carcinoma tissue labeling S100A4 using ab197896 at 1/2000 dilution. Goat Anti-Rabbit IgG H&L (HRP) ab97051 was used ay 1/500 dilution as a secondary antibody and cells were counterstained with Hematoxylin.

Inset image: negative control obtained using PBS instead of ab197896 and secondary antibody only.
Note: Nuclear and cytoplasm staining on cervix carcinoma tissue was observed.

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

Immunohistochemical analysis of paraffin-embedded Human lung carcinoma tissue labeling S100A4 using ab197896 at 1/2000 dilution. Goat Anti-Rabbit IgG H&L (HRP) ab97051 was used as a secondary antibody at a dilution of 1/500 and cells were counterstained with Hematoxylin.

Inset image: negative control obtained using PBS instead of ab197896 and secondary antibody only.
Note: Nuclear and weakly staining on lung carcinoma tissue was observed.

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

Blocking and dilution buffer: 5% NFDM/TBST.

Some optimisation may be required for detection of the target protein due to low levels of endogenous expression in some samples.