METHOD FOR ANALYZING MUCIN 1 USING PROBE CAPABLE OF BINDING TO 3'-SULFONATED CORE 1 CARBOHYDRATE CHAIN, AND METHOD FOR DETECTING OR MONITORING BREAST CANCER

摘要

The purpose of the present invention is to provide a method for detecting even mucin 1 derived from breast cancer, which cannot be detected by a CA15-3 measurement method. The purpose can be achieved by a method for analyzing the mucin 1 having a Sulfo-3Gal²1-3GalNAc-R carbohydrate chain, including: a step of bringing a 3' sulfonated core 1 carbohydrate chain binding probe capable of binding to the Sulfo-3Gal²1-3GalNAc-R carbohydrate chain into contact with a sample to be tested; a step of bringing a 3' sulfonated core 1 carbohydrate chain mucin 1 peptide binding probe capable of binding to the mucin 1 having a Sulfo-3Gal²1-3GalNAc-R carbohydrate chain or a mucin 1 binding probe capable of binding to a mucin 1 into contact with the sample to be tested; and a step of detecting a conjugate of the mucin 1 having a Sulfo-3Gal²1-3GalNAc-R carbohydrate chain and probe.