| abstract |
A novel carrier for brain delivery of a peptide drug is provided. According to one aspect of the present invention, there is provided a brain delivery carrier comprising the polypeptide according to any of the following (a) and (b): (A) A polypeptide comprising the amino acid sequence set forth in SEQ ID NO: 1. (B) A polypeptide comprising an amino acid sequence in which one or several amino acids are added, deleted, inserted or substituted in the amino acid sequence set forth in SEQ ID NO: 1, and having a brain transition activity. [Selection] Figure 1 |