The antibody MEM-25 reacts with an extracellular epitope of CD11a (alpha subunit of human LFA-1), a 170-180 kDa type I transmembrane glycoprotein expressed on B and T lymphocytes, monocytes, macrophages, neutrophils, basophils and eosinophils.
Réactivité croisée (Details)
Human
Purification
Purified by protein-A affinity chromatography.
Pureté
> 95 % (by SDS-PAGE)
niveau d'endotoxine
Endotoxin level is less than 0.01 EU/µg of the protein, as determined by the LAL test.
Immunogène
Leukocytes from a patient suffering from a LGL-type leukaemia.
ITGAL
Reactivité: Humain
FACS
Hôte: Souris
Monoclonal
MEM-25
PE
Indications d'application
Functional application: The antibody MEM-25 partially blocks binding of LFA-1 complex to ICAM-1. Immunoprecipitation: Excellent antibody for immunoaffinity purification of LFA-1 complex. Flow cytometry: Recommended dilution: 2 μg/mL.
Restrictions
For Research Use only
Concentration
1 mg/mL
Buffer
Phosphate buffered saline (PBS), pH 7.4
Agent conservateur
Azide free
Stock
4 °C
Stockage commentaire
Store at 2-8°C. Do not freeze.
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Bazil, Stefanová, Hilgert, Kristofová, Van?k, Horejsí: "Monoclonal antibodies against human leucocyte antigens. IV. Antibodies against subunits of the LFA-1 (CD11a/CD18) leucocyte-adhesion glycoprotein." dans: Folia biologica, Vol. 36, Issue 1, pp. 41-50, (1990) (PubMed).
Integrin subunit alpha L,CD11a (LFA-1 alpha) together with CD18 constitute leukocyte function-associated antigen 1 (LFA-1), the alphaLbeta2 integrin. CD11a is implicated in activation of LFA-1 complex. LFA-1 is expressed on the plasma membrane of leukocytes in a low-affinity conformation. Cell stimulation by chemokines or other signals leads to induction the high-affinity conformation, which supports tight binding of LFA-1 to its ligands, the intercellular adhesion molecules ICAM-1, -2, -3. LFA-1 is thus involved in interaction of various immune cells and in their tissue-specific settlement, but participates also in control of cell differentiation and proliferation and of T-cell effector functions. Blocking of LFA-1 function by specific antibodies or small molecules has become an important therapeutic approach in treatment of multiple inflammatory diseases. For example, humanized anti-LFA-1 antibody Efalizumab (Raptiva) is being used to interfere with T cell migration to sites of inflammation, binding of cholesterol-lowering drug simvastatin to CD11a allosteric site leads to immunomodulation and increase in lymphocytic cholinergic activity.,LFA-1, LFA1A, ITGAL