Monoclonal Anti-Human IgG4 is specific for the IgG4 subclass and nonreactive with IgG1, IgG2 and IgG3 in an ELISA.
The IUIS/WHO2 study singled out this monoclonal antibody as one of the most widely applicable IgG4 specific monoclonal antibodies. Monoclonal Anti-Human IgG4 may be used for the identification of the IgG4 subclass by various immunoassays including: ELISA, Imprint Immunofixation (IIF), Immunofluorometric Assay (IFMA), Hemagglutination (HA), Hemagglutination Inhibition (HAI), Particle Counting Immunoassay (PACIA), and detection of cytoplasmic IgG.
Anti-Human IgG4−Biotin antibody, Mouse monoclonal has been used in immunohistochemistry and immunostaining.
Monoclonal Anti-Human IgG4-Biotin antibody produced in mouse may be used in ELISA at a working dilution of 1:15,000. It was used for detection of serum IgG4 produced in response to malaria parasite infection by ELISA.
Acciones bioquímicas o fisiológicas
IgG4 is the least abundant immunoglobulin present in the human serum. IgG4 is implicated in a unique process called fab-arm exchange (FAE) and limits the formation of immune complex. It has anti-inflammatory properties. IgG4 functions as a therapeutic antibody. It provides protection against allergy, prevents mast cell degranulation and has a harmful role in malignant melanoma. IgG4 may be associated with autoimmune diseases such as, autoimmune pancreatitis (AIP) type 1 and 2, Mikulicz syndrome, Kuttner′s tumor, Riedel′s thyroiditis and tubulointerstitial nephritis.
IgG antibody subtype is the most abundant of serum immunoglobulins of the immune system. It is secreted by B cells and is found in blood and extracellular fluids and provides protection from infections caused by bacteria, fungi and viruses. Maternal IgG is transferred to fetus through the placenta that is vital for immune defense of the neonate against infections. The coupling of biotin to monoclonal Anti-Human IgG4 antibody allows for the binding of various labels such as avidin or streptavidin.
Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 1% bovine serum albumin and 15 mM sodium azide
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