HLA-DR/HLA-DRA Antibody

• Catalog Number: orb570390
• Category: Antibodies
• Description: HLA-DR/HLA-DRA Antibody
• Species/Host: Rabbit
• Clonality: Polyclonal
• Tested applications: ELISA, FC, IHC, WB
• Reactivity: Human
• Isotype: Rabbit IgG
• Immunogen: E.coli-derived human HLA-DR/HLA-DRA recombinant protein (Position: I26-L254).
• Concentration: Adding 0.2 ml of distilled water will yield a concentration of 500 μg/ml.
• Dilution range: Western blot, 0.25-0.5μg/ml, Human Immunohistochemistry (Paraffin-embedded Section), 0.5-1μg/ml, Human, By Heat Flow Cytometry, 1-3μg/1x106 cells, Human Direct ELISA, 0.1-0.5μg/ml, Human
• Form/Appearance: Lyophilized
• Conjugation: Unconjugated
• MW: 37 kDa
• UniProt ID: P01903
• Storage: Store at -20˚C for one year from date of receipt. After reconstitution, at 4˚C for one month. It can also be aliquotted and stored frozen at -20˚C for six months. Avoid repeated freeze-thaw cycles.
• Alternative names: HLA class II histocompatibility antigen, DR alpha
• Note: For research use only
• Application notes: Tested Species: In-house tested species with positive results. By Heat: Boiling the paraffin sections in 10mM citrate buffer, pH6.0, for 20mins is required for the staining of formalin/paraffin sections. Other applications have not been tested. Optimal dilutions should be determined by end users. Add 0.2ml of distilled water will yield a concentration of 500ug/ml.
• Expiration Date: 12 months from date of receipt.

Western blot analysis of HLA-DRA using anti-HLA-DRA antibody (orb570390). Electrophoresis was performed on a 5-20% SDS-PAGE gel at 70V (Stacking gel)/90V (Resolving gel) for 2-3 hours. The sample well of each lane was loaded with 30 ug of sample under reducing conditions. Lane 1: human Raji whole cell lysates, Lane 2: human Daudi whole cell lysates, Lane 3: human Ramos whole cell lysates, Lane 4: human HMy2.CIR whole cell lysates. After electrophoresis, proteins were transferred to a nitrocellulose membrane at 150 mA for 50-90 minutes. Blocked the membrane with 5% non-fat milk/TBS for 1.5 hour at RT. The membrane was incubated with rabbit anti-HLA-DRA antigen affinity purified polyclonal antibody (Catalog # orb570390) at 0.5 μg/mL overnight at 4°C, then washed with TBS-0.1%Tween 3 times with 5 minutes each and probed with a goat anti-rabbit IgG-HRP secondary antibody at a dilution of 1:5000 for 1.5 hour at RT. The signal is developed using an Enhanced Chemiluminescent detection (ECL) kit (Catalog # orb90503) with Tanon 5200 system. A specific band was detected for HLA-DRA at approximately 37 kDa. The expected band size for HLA-DRA is at 29 kDa.

IHC analysis of HLA-DRA using anti-HLA-DRA antibody (orb570390). HLA-DRA was detected in paraffin-embedded section of human mammary cancer tissues. Heat mediated antigen retrieval was performed in citrate buffer (pH6, epitope retrieval solution) for 20 mins. The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 1μg/ml rabbit anti-HLA-DRA Antibody (orb570390) overnight at 4°C. Biotinylated goat anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37°C. The tissue section was developed using Strepavidin-Biotin-Complex (SABC) (Catalog # orb90444) with DAB as the chromogen.

IHC analysis of HLA-DRA using anti-HLA-DRA antibody (orb570390). HLA-DRA was detected in paraffin-embedded section of human mammary cancer tissues. Heat mediated antigen retrieval was performed in citrate buffer (pH6, epitope retrieval solution) for 20 mins. The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 1μg/ml rabbit anti-HLA-DRA Antibody (orb570390) overnight at 4°C. Biotinylated goat anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37°C. The tissue section was developed using Strepavidin-Biotin-Complex (SABC) (Catalog # orb90444) with DAB as the chromogen.

IHC analysis of HLA-DRA using anti-HLA-DRA antibody (orb570390). HLA-DRA was detected in paraffin-embedded section of human duodenal adenocarcinoma tissues. Heat mediated antigen retrieval was performed in citrate buffer (pH6, epitope retrieval solution) for 20 mins. The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 1μg/ml rabbit anti-HLA-DRA Antibody (orb570390) overnight at 4°C. Biotinylated goat anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37°C. The tissue section was developed using Strepavidin-Biotin-Complex (SABC) (Catalog # orb90444) with DAB as the chromogen.

IHC analysis of HLA-DRA using anti-HLA-DRA antibody (orb570390). HLA-DRA was detected in paraffin-embedded section of human laryngeal squamous cell carcinoma tissues. Heat mediated antigen retrieval was performed in citrate buffer (pH6, epitope retrieval solution) for 20 mins. The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 1μg/ml rabbit anti-HLA-DRA Antibody (orb570390) overnight at 4°C. Biotinylated goat anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37°C. The tissue section was developed using Strepavidin-Biotin-Complex (SABC) (Catalog # orb90444) with DAB as the chromogen.

IHC analysis of HLA-DRA using anti-HLA-DRA antibody (orb570390). HLA-DRA was detected in paraffin-embedded section of human seminoma testis tissues. Heat mediated antigen retrieval was performed in citrate buffer (pH6, epitope retrieval solution) for 20 mins. The tissue section was blocked with 10% goat serum. The tissue section was then incubated with 1μg/ml rabbit anti-HLA-DRA Antibody (orb570390) overnight at 4°C. Biotinylated goat anti-rabbit IgG was used as secondary antibody and incubated for 30 minutes at 37°C. The tissue section was developed using Strepavidin-Biotin-Complex (SABC) (Catalog # orb90444) with DAB as the chromogen.

Flow Cytometry analysis of human PBMC cells using anti-HLA-DRA antibody (orb570390). Overlay histogram showing human PBMC cells stained with orb570390 (Blue line). The cells were blocked with 10% normal goat serum. And then incubated with rabbit anti-HLA-DRA Antibody (orb570390, 1μg/1x10^6 cells) for 30 min at 20°C. DyLight®488 conjugated goat anti-rabbit IgG (5-10μg/1x10^6 cells) was used as secondary antibody for 30 minutes at 20°C. Isotype control antibody (Green line) was rabbit IgG (1μg/1x10^6) used under the same conditions. Unlabelled sample (Red line) was also used as a control.

Flow Cytometry analysis of SW620 cells using anti-HLA-DRA antibody (orb570390). Overlay histogram showing SW620 cells stained with orb570390 (Blue line). The cells were blocked with 10% normal goat serum. And then incubated with rabbit anti-HLA-DRA Antibody (orb570390, 1μg/1x10^6 cells) for 30 min at 20°C. DyLight®488 conjugated goat anti-rabbit IgG (5-10μg/1x10^6 cells) was used as secondary antibody for 30 minutes at 20°C. Isotype control antibody (Green line) was rabbit IgG (1μg/1x10^6) used under the same conditions. Unlabelled sample (Red line) was also used as a control.