bsm-52535R
[Primary Antibody]
HLA-DR Recombinant Antibody
DATASHEET
Host: Rabbit
Target Protein: HLA-DR
Clonality: Recombinant
Isotype: IgG
Entrez Gene: 3122
Swiss Prot: P01903
Source: Recombinant human HLA-DR between 150-250 amino acids
Purification: Purified by Protein A.
Storage Buffer: 0.01M TBS (pH 7.4), 1% BSA, 0.02% Proclin 300, and 50% Glycerol
Storage: Store at 4°C for up to 2 weeks. For long term storage, store at -20°C in small aliquots to prevent freeze-thaw cycles.
Background:
Binds peptides derived from antigens that access the endocytic route of antigen presenting cells (APC) and presents them on the cell surface for recognition by the CD4 T-cells. The peptide binding cleft accommodates peptides of 10-30 residues. The peptides presented by MHC class II molecules are generated mostly by degradation of proteins that access the endocytic route, where they are processed by lysosomal proteases and other hydrolases. Exogenous antigens that have been endocytosed by the APC are thus readily available for presentation via MHC II molecules, and for this reason this antigen presentation pathway is usually referred to as exogenous. As membrane proteins on their way to degradation in lysosomes as part of their normal turn-over are also contained in the endosomal/lysosomal compartments, exogenous antigens must compete with those derived from endogenous components. Autophagy is also a source of endogenous peptides, autophagosomes constitutively fuse with MHC class II loading compartments. In addition to APCs, other cells of the gastrointestinal tract, such as epithelial cells, express MHC class II molecules and CD74 and act as APCs, which is an unusual trait of the GI tract. To produce a MHC class II molecule that presents an antigen, three MHC class II molecules (heterodimers of an alpha and a beta chain) associate with a CD74 trimer in the ER to form a heterononamer. Soon after the entry of this complex into the endosomal/lysosomal system where antigen processing occurs, CD74 undergoes a sequential degradation by various proteases, including CTSS and CTSL, leaving a small fragment termed CLIP (class-II-associated invariant chain peptide). The removal of CLIP is facilitated by HLA-DM via direct binding to the alpha-beta-CLIP complex so that CLIP is released. HLA-DM stabilizes MHC class II molecules until primary high affinity antigenic peptides are bound. The MHC II molecule bound to a peptide is then transported to the cell membrane surface.
Size: 100ul
Concentration: 1ug/ul
Cross Reactive Species: Human
For research use only. Not intended for diagnostic or therapeutic use.
PRODUCT SPECIFIC PUBLICATIONS
- Kai Ye. et al. An armed oncolytic virus enhances the efficacy of tumor-infiltrating lymphocyte therapy by converting tumors to artificial antigen presenting cells in situ. MOL THER. 2022 JuRead more>>
VALIDATION IMAGES
Flow cytometric analysis of Jurkat cells with HLA-DR (32G3) Monoclonal Antibody (bsm-52535R) at 1:50 dilution (red) compared with an unlabeled control (cells without incubation with primary antibody; black).
Daudi cell lysate probed with HLA-DR (32G3) Monoclonal Antibody (bsm-52535R) at 1:1000 overnight at 4°C followed by a conjugated secondary antibody for 60 minutes at 37°C.
IF(ICC) staining with HLA-DR (32G3) Monoclonal Antibody (bsm-52535R) at 1:100 in HeLa cells (green). The nuclear counterstain is DAPI (blue). Cells were fixed in paraformaldehyde, permeabilized with 0.25% Triton X100/PBS.
IF(ICC) staining with HLA-DR (32G3) Monoclonal Antibody (bsm-52535R) at 1:100 in B16-F1 cells (green). The nuclear counterstain is DAPI (blue). Cells were fixed in paraformaldehyde, permeabilized with 0.25% Triton X100/PBS.
Paraformaldehyde-fixed, paraffin embedded Human Lung Cancer; Antigen retrieval by boiling in sodium citrate buffer (pH6.0) for 15 min; Antibody incubation with HLA-DR Monoclonal Antibody, Unconjugated(bsm-52535R) at 1:200 overnight at 4°C, followed by conjugation to the bs-0295G-HRP and DAB (C-0010) staining.
Paraformaldehyde-fixed, paraffin embedded Human Colon Cancer; Antigen retrieval by boiling in sodium citrate buffer (pH6.0) for 15 min; Antibody incubation with HLA-DR Monoclonal Antibody, Unconjugated(bsm-52535R) at 1:200 overnight at 4°C, followed by conjugation to the bs-0295G-HRP and DAB (C-0010) staining.
Paraformaldehyde-fixed, paraffin embedded Human Esophagus Cancer; Antigen retrieval by boiling in sodium citrate buffer (pH6.0) for 15 min; Antibody incubation with HLA-DR Monoclonal Antibody, Unconjugated(bsm-52535R) at 1:200 overnight at 4°C, followed by conjugation to the bs-0295G-HRP and DAB (C-0010) staining.
Human Daudi cell lysates probed with HLA-DR Monoclonal Antibody, Unconjugated (bsm-52535R) at 1:500 dilution and 4°C overnight incubation. Followed by conjugated secondary antibody incubation at 1:20000 for 60 min at 37˚C.
Paraformaldehyde-fixed, paraffin embedded Human EEndometrial Cancer; Antigen retrieval by boiling in sodium citrate buffer (pH6.0) for 15 min; Antibody incubation with HLA-DR Monoclonal Antibody, Unconjugated(bsm-52535R) at 1:200 overnight at 4°C, followed by conjugation to the bs-0295G-HRP and DAB (C-0010) staining.
Paraformaldehyde-fixed, paraffin embedded Human Gastric Cancer; Antigen retrieval by boiling in sodium citrate buffer (pH6.0) for 15 min; Antibody incubation with HLA-DR Monoclonal Antibody, Unconjugated(bsm-52535R) at 1:200 overnight at 4°C, followed by conjugation to the bs-0295G-HRP and DAB (C-0010) staining.
Paraformaldehyde-fixed, paraffin embedded Human Tonsil; Antigen retrieval by boiling in sodium citrate buffer (pH6.0) for 15 min; Antibody incubation with HLA-DR Monoclonal Antibody, Unconjugated(bsm-52535R) at 1:200 overnight at 4°C, followed by conjugation to the bs-0295G-HRP and DAB (C-0010) staining.
Paraformaldehyde-fixed, paraffin embedded Human Liver; Antigen retrieval by boiling in sodium citrate buffer (pH6.0) for 15 min; Antibody incubation with HLA-DR Monoclonal Antibody, Unconjugated(bsm-52535R) at 1:200 overnight at 4°C, followed by conjugation to the bs-0295G-HRP and DAB (C-0010) staining.
Paraformaldehyde-fixed, paraffin embedded Human Colon; Antigen retrieval by boiling in sodium citrate buffer (pH6.0) for 15 min; Antibody incubation with HLA-DR Monoclonal Antibody, Unconjugated(bsm-52535R) at 1:200 overnight at 4°C, followed by conjugation to the bs-0295G-HRP and DAB (C-0010) staining.
25 ug total protein per lane of various lysates (see on figure) probed with HLA-DR monoclonal antibody, unconjugated (bsm-52535R) at 1:2000 dilution and 4°C overnight incubation. Followed by conjugated secondary antibody incubation at r.t. for 60 min.
Paraformaldehyde-fixed, paraffin embedded Human Spleen; Antigen retrieval by boiling in sodium citrate buffer (pH6.0) for 15 min; Antibody incubation with HLA-DR Monoclonal Antibody, Unconjugated(bsm-52535R) at 1:200 overnight at 4°C, followed by conjugation to the bs-0295G-HRP and DAB (C-0010) staining.