Diatide, Inc.

Larry R Bush

Richard T Dean

John Lister-James

Daniel A Pearson

Francis S Markland, Jr

Eladio Flores Sanchez

Stephen Swenson

This invention relates to calcitonin receptor binding reagents Comprising Compounds which are Covalently linked to a radiometal chelator. The invention is embodied as calcitonin receptor binding peptide derivatives and analogues of calcitonin which may be radiolabeled with a suitable isotope and used as radiodiagnostic or radiotherapeutic agents. Methods and kits for making, radiolabeling and using such reagents diagnostically and therapeutically in a mammalian body are also provided.

Calcitonin receptor binding reagents

This invention relates to calcitonin receptor binding reagents comprising compounds which are covalently linked to a radiometal chelator. The invention is embodied as calcitonin receptor binding peptide derivatives and analogues of calcitonin which may be radiolabeled with a suitable isotope and used as radiodiagnostic or radiotherapeutic agents. Methods and kits for making, radiolabeling and using such reagents diagnostically and therapeutically in a mammalian body are also provided.

This invention relates to radiotherapeutic reagents and peptides, radiodiagnostic reagents and peptides, and methods for producing labeled radiodiagnostic and radiotherapeutic agents. Specifically, the invention relates to calcitonin receptor binding compounds, preferably peptides, derivatives and analogues of calcitonin, and embodiments of such compounds radiolabeled with a radioisotope, as well as methods and kits for making, radiolabeling and using such compounds, particularly peptides for radiodiagnostic and radiotherapeutic purposes. The invention specifically relates to calcitonin receptor binding peptide derivatives and analogues of calcitonin radiolabeled with technetium-99m and uses thereof as scintigraphic imaging agents. The invention also specifically relates to calcitonin receptor binding peptide derivatives and analogues of calcitonin radiolabeled with cytotoxic radioisotopes such as rhenium-186 (.sup.186 Re) and rhenium-188 (.sup.188 Re) for use as radiotherapeutic agents. Methods and kits for making, radiolabeling and using such peptides diagnostically and therapeutically in a mammalian body are also provided.

This invention provides thrombolytic agents and methods for making and using thrombolytic agents. Specifically, the invention provides thrombolytic agents comprising a thrombolytic proteinase and a specific binding peptide that specifically binds at the site of blood clots and thrombi in vivo. The invention particularly provides chemically crosslinked conjugates of a thrombolytic proteinase and a plurality of specific binding peptide. Methods for producing such chemically crosslinked conjugates and methods for using such conjugates for eliminating thrombi in vivo to alleviate pathological conditions caused thereby are also provided. The preferred thrombolytic proteinase in the conjugate is fibrolase obtainable from Agkistrodon contortrix confortrix venom.

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Exeter, NH, United States of America

Larry R Bush