The invention belongs to the technical field of fusion proteins, and particularly relates to a
fusion protein and application thereof in treatment of
multiple sclerosis, the
fusion protein is prepared by fusing
myelin basic
protein,
myelin oligodendroglia
glycoprotein and proteolipid
protein, key epitopes of three main
myelin sheath antigens, namely MBP, MOG and PLP, are fused by using an
escherichia coli
recombinant expression technology to prepare a tolerogen, a multivalent tolerogen is formed,
immune tolerance is more comprehensively induced, the risk of
immune escape is reduced, an
escherichia coli expression
system has a mature industrial production basis,
fusion protein can be efficiently produced in a large scale at low cost, and the application prospect is wide. In the
antigen-specific treatment of
multiple sclerosis, the tolerogen of the fusion
protein can be directly injected, does not need individual preparation, is
safer, more conforms to a clinical conventional administration mode, and is convenient for wide application.