TY - JOUR
T1 - A solid-phase receptor binding assay for 125I-hCG
AU - Bortolussi, M.
AU - Selmin, O.
AU - Colombatti, A.
PY - 1987/6/1
Y1 - 1987/6/1
N2 - A solid-phase radioligand-receptor assay (RRA) to measure the binding of 125I-labelled human chorionic gonadotropin (125I-hCG) to target cell membranes has been developed. The binding of 125I-hCG to membranes immobilized on the wells of microtitration plates reached a maximum at about 3 hours at 37°C, was saturable, displayed a high affinity (Ka = 2.4 × 109M−1) and was specifically inhibited by unlabelled hCG. In comparison with RRAs carried out with membranes in suspension, the solid-phase RRA is significantly simpler and much faster to perform as it avoids centrifugation or filtration procedures. The solid-phase RRA was adapted profitably to process large numbers of samples at the same time. It proved particularly useful as a screening assay to detect anti-hCG monoclonal antibodies with high inhibitory activity for binding of 125I-hCG to its receptors.
AB - A solid-phase radioligand-receptor assay (RRA) to measure the binding of 125I-labelled human chorionic gonadotropin (125I-hCG) to target cell membranes has been developed. The binding of 125I-hCG to membranes immobilized on the wells of microtitration plates reached a maximum at about 3 hours at 37°C, was saturable, displayed a high affinity (Ka = 2.4 × 109M−1) and was specifically inhibited by unlabelled hCG. In comparison with RRAs carried out with membranes in suspension, the solid-phase RRA is significantly simpler and much faster to perform as it avoids centrifugation or filtration procedures. The solid-phase RRA was adapted profitably to process large numbers of samples at the same time. It proved particularly useful as a screening assay to detect anti-hCG monoclonal antibodies with high inhibitory activity for binding of 125I-hCG to its receptors.
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U2 - 10.1080/15321818708057023
DO - 10.1080/15321818708057023
M3 - Article
C2 - 3624494
AN - SCOPUS:0023073032
VL - 8
SP - 219
EP - 235
JO - Journal of Immunoassay
JF - Journal of Immunoassay
SN - 0197-1522
IS - 2-3
ER -