Improved preparation method for high-yield production of physiologically active polypeptide conjugate

摘要

The present invention relates to a method for preparing a conjugate in which a physiologically active polypeptide, a nonpeptide polymer linker, and an immunoglobulin constant region are connected by a covalent bond. More particularly, the present invention relates to a method capable of efficiently preparing a physiologically active polypeptide conjugate by solving the problem of low production yield by using salt in a coupling reaction when preparing the physiologically active polypeptide conjugate. A physiologically active polypeptide-nonpeptide polymer-immunoglobulin constant region conjugate can be prepared in high yield and purity by means of the preparation method of the present invention. In addition, the physiologically active polypeptide conjugate prepared using the method can be effectively used in developing a long-acting formulation of a physiologically active polypeptide which can enhance industrial applicability by reducing manufacturing costs and which can improve a patient's medication adherence.