Radioiodination of mouse anti-III beta-tubulin antibodies and their evaluation with respect to their use as diagnostic agents for peripheral neuropathies.

The monoclonal antibody TU-20 and its scFv fragment were radiolabeled with 125 I in order to develop new imaging agents against the specific neuronal marker III beta-tubulin. The reaction via chloramine-T using thiosulfate as a stopping reductant was determined as the most convenient way for radioiodination. The preserved immunological properties of radioiodinated species were estimated by ELISA, electrophoresis, and immunohistochemistry with autoradiography. Biodistribution studies revealed a different behavior of radioiodinated TU-20 and its scFv.