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Quantitative assay of terminal deoxynucleotidyl transferase (TdT) activity using monoclonal antibodies
R Sasaki1, Y Yuasa, F J Bollum
1Department of Hematology, Jichi Medical School, Tochigi-Ken, Japan.
Abstract:
Terminal deoxynucleotidyl transferase (TdT) is an important marker for the diagnosis and the therapy of leukemia and lymphoma patients. In this study, we developed the quantitative method for the assay of TdT antigen in leukemic cells using a combination of monoclonal and polyclonal antibodies prepared for this enzyme. High correlation was obtained between the values measured by biochemical assay and enzyme-linked immunosorbent assay (ELISA). This method (ELISA), using antibodies to TdT, permits the rapid and quantitative estimation of TdT antigen in leukemic cells.