Anti-LAMP1 antibody [H4A3] (ab25630)

Ab25630 stained Hela cells. The cells were 100% methanol fixed for 5 minutes and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Triton for 1h at room temperature to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with ab25630 at 5µg/ml and ab202272 (Rabbit monoclonal [EP1332Y] to alpha Tubulin - Microtubule Marker (Alexa Fluor® 594) – pseudo-colored red) overnight at +4°C. The secondary antibody (pseudo-colored green) was a Goat Anti-Mouse IgG H&L (Alexa Fluor® 488) preadsorbed (ab150117) used at a 1/1000 dilution for 1h at room temperature. DAPI was used to stain the cell nuclei (pseudo-colored blue) at a concentration of 1.43µM for 1hour at room temperature.

IHC image of LAMP1 staining in human placenta formalin fixed paraffin embedded tissue section*, performed on a Leica Bond™ system using the standard protocol F. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 20 mins. The section was then incubated with ab25630, 1µg/ml, for 15 mins at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.

For other IHC staining systems (automated and non-automated) customers should optimize variable parameters such as antigen retrieval conditions, primary antibody concentration and antibody incubation times.

*Tissue obtained from the Human Research Tissue Bank, supported by the NIHR Cambridge Biomedical Research Centre

This blot was produced using a 4-12% Bis-tris gel under the MOPS buffer system. The gel was run at 200V for 50 minutes before being transferred onto a Nitrocellulose membrane at 30V for 70 minutes. The membrane was then blocked for an hour using Licor blocking buffer before being incubated with ab25630 (1/1000) overnight at 4°C. Antibody binding was detected using ab9485 (rabbit anti-GAPDH);  at a 1/10,000 dilution for 1hr at room temperature and then imaged using the Licor Odyssey CLx.

Overlay histogram showing Jurkat cells stained with ab25630 (red line). The cells were fixed with 4% paraformaldehyde (10 min) and then permeabilized with 0.1% PBS-Tween for 20 min. The cells were then incubated in 1x PBS / 10% normal goat serum / 0.3M glycine to block non-specific protein-protein interactions followed by the antibody (ab25630, 1/20 dilution) for 30 min at 22°C. The secondary antibody used was DyLight® 488 goat anti-mouse IgG (H+L) (ab96879) at 1/500 dilution for 30 min at 22°C. Isotype control antibody (black line) was mouse IgG1 [ICIGG1] (ab91353, 2µg/1x10⁶ cells) used under the same conditions. Acquisition of >5,000 events was performed. This antibody gave a positive signal in Jurkat cells fixed with methanol (5 min)/permeabilized in 0.1% PBS-Tween used under the same conditions.

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ab25630 staining LAMP1 in human HaCaT keratinocytes by Immunocytochemistry/ Immunofluorescence. Cells were fixed with acetone, permeabilized with ice cold acetone and blocking with 4% PBS, 0.4% BSA and goat serum was performed for 16 hours at 4⁰C. Samples were incubated with primary antibody (1/100: in 10% blocking solution in PBS) for 1 hour at 23⁰C. An Alexa Fluor ® 680-conjugated goat polyclonal to mouse IgG was used at dilution at 1/200 as secondary antibody. Alexafluor-680 signal is pseudocolored green in the image.

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