CD20 antibody (Membrane-Spanning 4-Domains, Subfamily A, Member 1) (FITC)

Details for Product anti-MS4A1 Antibody No. ABIN94029
Antigen
Reactivity
Human
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81
48
34
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3
1
Host
Mouse
590
181
8
5
3
1
1
Clonality (Clone)
Monoclonal ()
Conjugate
This CD20 antibody is conjugated to FITC
61
56
44
42
14
10
9
7
7
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3
3
3
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
Application
Flow Cytometry (FACS)
501
184
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109
100
94
49
43
23
20
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10
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Options
Immunogen Normal human lymphocytes from lymph node.
Clone LT20
Isotype IgG2a
Specificity The antibody LT20 reacts with CD20 (Bp35), a 33-37 kDa non-glycosylated membrane receptor with four transmembrane domains, expressed on B lymphocytes (it is lost on plasma cells), follicular dendritic cells, and at low levels on peripheral blood T lymphocytes.
Cross-Reactivity (Details) Human
Antigen
Alternative Name CD20 (MS4A1 Antibody Abstract)
Background CD20 is a cell surface 33-37 (depending on the degree of phosphorylation) kDa non-glycosylated surface phosphoprotein expressed on mature and most malignant B cells, but not stem cells or plasma cells (low number of the CD20 has been also detected on a subpopulation of T lymphocytes and it can be expressed on follicular dendritic cells). Its expression on B cells is synchronous with the expression of surface IgM. CD20 regulates transmembrane calcium conductance (probably functioning as a component of store-operated calcium channel), cell cycle progression and B-cell proliferation. It is associated with lipid rafts, but the intensity of this association depends on extracellular triggering, employing CD20 conformational change and/or BCR (B cell antigen receptor) aggregation. After the receptor ligation, BCR and CD20 colocalize and then rapidly dissociate before BCR endocytosis, whereas CD20 remains at the cell surface. CD20 serves as a useful target for antibody-mediated therapeutic depletion of B cells, as it is expressed at high levels on most B-cell malignancies, but does not become internalized or shed from the plasma membrane following mAb treatment.
Application Notes The reagent is designed for Flow Cytometry analysis of human blood cells using 20 μ,l reagent / 100 μ,l of whole blood or 106 cells in a suspension.The content of a vial (2 ml) is sufficient for 100 tests.
Comment

The purified antibody is conjugated with Fluorescein isothiocyanate (FITC) under optimum conditions. The reagent is free of unconjugated FITC and adjusted for direct use. No reconstitution is necessary.

Restrictions For Research Use only
Reconstitution No reconstitution is necessary.
Buffer The reagent is provided in stabilizing phosphate buffered saline (PBS) solution containing 15 mM sodium azide.
Preservative Sodium azide
Precaution of Use This product contains Sodium azide: a POISONOUS AND HAZARDOUS SUBSTANCE which should be handled by trained staff only.
Handling Advice Do not freeze.
Avoid prolonged exposure to light.
Storage 4 °C
Storage Comment Store in the dark at 2-8°C. Do not freeze. Avoid prolonged exposure to light. Do not use after expiration date stamped on vial label.
Supplier Images
Image no. 1 for anti-Membrane-Spanning 4-Domains, Subfamily A, Member 1 (MS4A1) antibody (FITC) (ABIN94029) Surface staining of human peripheral blood cells with anti-human CD20 (LT20) FITC.
Product cited in: Všianská, Říhová, Varmužová, Suská, Kryukov, Mikulášová, Kupská, Penka, Pour, Adam, Hájek: "Analysis of B-cell subpopulations in monoclonal gammopathies." in: Clinical lymphoma, myeloma & leukemia, Vol. 15, Issue 4, pp. e61-71, 2015 (PubMed).

Filatov, Krotov, Zgoda, Volkov: "Fluorescent immunoprecipitation analysis of cell surface proteins: a methodology compatible with mass-spectrometry." in: Journal of immunological methods, Vol. 319, Issue 1-2, pp. 21-33, 2007 (PubMed).

Teeling, Mackus, Wiegman, van den Brakel, Beers, French, van Meerten, Ebeling, Vink, Slootstra, Parren, Glennie, van de Winkel: "The biological activity of human CD20 monoclonal antibodies is linked to unique epitopes on CD20." in: Journal of immunology (Baltimore, Md. : 1950), Vol. 177, Issue 1, pp. 362-71, 2006 (PubMed).

Chan, Hughes, French, Tutt, Walshe, Teeling, Glennie, Cragg: "CD20-induced lymphoma cell death is independent of both caspases and its redistribution into triton X-100 insoluble membrane rafts." in: Cancer research, Vol. 63, Issue 17, pp. 5480-9, 2003 (PubMed).