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
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 mucin 1 having a Sulfo-3Galss1-3GalNAc-R carbohydrate chain, characterized by comprising: a step of bringing a 3'-sulfonated core 1 carbohydrate chain binding probe capable of binding to the Sulfo-3Galss1-3GalNAc-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 mucin 1 having the Sulfo-3Galss1-3GalNAc-R carbohydrate chain or a mucin 1 binding probe capable of binding to mucin 1 into contact with the sample
and a step of detecting a bonded product of mucin 1 having the Sulfo-3Galss1-3GalNAc-R carbohydrate chain and the probes.