Peptide having highly-shifted accumulation to pancreatic cancer cells and tissues, and use of said peptide
Disclosed is a peptide of the following (a) or (b): (a) a peptide containing an amino acid sequence including a sequence set forth in any one of SEQ ID NOS: 1, 2, 3, and 4; and (b) a peptide containing an amino acid sequence including a sequence having at least 60% identity with a sequence set forth in any one of SEQ ID NOS: 1, 2, 3, and 4, the peptide having highly-shifted accumulation to pancreatic cancer cells and tissues.
1. A peptide consisting of:
(a) the amino acid sequence of SEQ ID NO: 4; or
(b) an amino acid sequence having at least 90% identity with the amino acid sequence of SEQ ID NO: 4.
2. The peptide according to claim 1 , wherein the peptide comprises L-amino acids.
3. A carrier comprising a peptide of claim 1 ; and a marker or modifier, bonded to the peptide.
4. The carrier according to claim 3 , wherein the marker is one selected from the group consisting of a stable isotope, a radioisotope, and a fluorescent substance.
5. The carrier according to claim 3 , wherein the modifier is one selected from the group consisting of a sugar chain and polyethylene glycol.
6. A pharmaceutical composition comprising:
a peptide of claim 1 ; and
a physiologically active substance.