Identification and Quantification of Hb C With an Enzyme-Linked Immunosorbent Assay
1985
A highly specific enzyme-linked immunosorbent assay (ELISA) was developed for the rapid identification and quantification of hemoglobin C in hemolysates. The procedure involves coating the surface of microtiter wells with Hb C and then addition of monospecific rabbit antibodies that recognize the unique β6 GLU→LYS substitution in Hb C. Next, an antibody to rabbit γ-globulin conjugated with alkaline phosphatase is added, followed by substrate; a yellow color is formed due to the enzymatic hydrolysis of the substrate, which can be measured spectrophotometrically. for quantification purposes, a hemolysate containing Hb C is introduced just prior to the addition of the Hb C antibody. This results in blocking the attachment of the anti-Hb C to the Hb C coated to the plastic surface. Upon addition of anti-rabbit γ-globulin conjugate and substrate, there is a consequent reduction or elimination of color formation. Since the degree of diminution of color formation is dose-dependent, standard curves can be develop...
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