CD103 Antibody – Hamster Monoclonal

Monoclonal

Armenian Hamster IgG

2E7

Armenian Hamster

Mouse

R - phycoerythrin (R - PE) Conjugate

The CD103/ alpha IEL beta 7 integrin complex (Mr 160 and 115 kDa peptides).
CD103 is a member of the integrin series of adhesion molecules. This antigen defines a developmentally important subset of T cells, namely mucosal T cells including all IEL (intraepithelial lymphocytes) and ~20% of lamina propria T cells. Expression of CD103 is more restricted outside these mucosal organs, appearing at lower levels on T cell subsets of the lymph node, dendritic epidermis and periphery.1-3 In non-epithelial CD103+ T cells there is a bias toward expression on CD8+.cells. The 2E7 mAb exhibits antigen immunoprecipitation patterns similar if not identical to the rat anti-mouse CD103 mAb M290.1 The 2E7 mAb is reported to have signal-inducing activity in a redirected lysis assay and to co-stimulate IEL and CD8+ lymph node cells in conjunction with anti-TCR in vitro, which runs counter to the usual inhibition of CTL by anti-integrins.1 This co-stimulatory activity is also shared by the mAb M290.4 The property of costimulation is not unique to the mouse since the combination of anti-human alpha IEL plus anti-TCR will produce similar proliferation in human cells, with the exception that CD8+ cells are not stimulated.5

The purified (UNLB) antibody is supplied as 0.5 mg of purified immunoglobulin in 1.0 mL of 100 mM borate buffered saline, pH 8.2. No preservatives or amine-containing buffer salts added. Store at 2- 8 degree C.
The fluorescein (FITC) conjugate is supplied as 0.5 mg in 1.0 mL of PBS/NaN3. Store at 2-8 degree C.
The biotin (BIOT) conjugate is supplied as 0.5 mg in 1.0 mL of PBS/NaN3. Store at 2-8 degree C.
The R-phycoerythrin (R-PE) conjugate is supplied as 0.1 mg in 1.0 mL of PBS/NaN3 and a stabilizing agent. Store at 2-8 degree C. Do not freeze!
The low endotoxin, azide-free (LE/AF) antibody is supplied as 0.5 mg purified immunoglobulin in 1.0 mL of PBS. Aliquot and store at or below -20 degree C.
Protect conjugated forms from light. Aliquot and freeze the low endotoxin, azide-free product at -20 degree C immediately upon receipt. Each reagent is stable for the period shown on the bottle label if stored as directed.

To ensure lot-to-lot consistency, each batch of monoclonal antibody is tested by flow cytometry to conform to characteristics of a standard reference reagent. Representative data are included in this product insert.