Granted Patent
B2
US 12,415,835 · App. 18/460,300 · Granted Sep 16, 2025
Peptide-compound cyclization method
Inventors:
Shiori Kariyuki (Shizuoka, JP); Takeo Iida (Kanagawa, JP); Miki Kojima (Kanagawa, JP); Ryuichi Takeyama (Shizuoka, JP); Mikimasa Tanada (Shizuoka, JP); Tetsuo Kojima (Kanagawa, JP); Hitoshi Iikura (Shizuoka, JP); Atsushi Matsuo (Shizuoka, JP); Takuya Shiraishi (Shizuoka, JP); Takashi Emura (Shizuoka, JP); Kazuhiko Nakano (Shizuoka, JP); Koji Takano (Shizuoka, JP); Kousuke Asou (Shizuoka, JP); Takuya Torizawa (Shizuoka, JP); Ryusuke Takano (Shizuoka, JP); Nozomi Hisada (Shizuoka, JP); Naoaki Murao (Shizuoka, JP); Atsushi Ohta (Kanagawa, JP); Kaori Kimura (Kanagawa, JP); Yusuke Yamagishi (Kanagawa, JP); Tatsuya Kato (Tokyo, JP)
Assignee:
CHUGAI SEIYAKU KABUSHIKI KAISHA
C07K7/64C07H21/04C07K1/113C07K5/0812C07K5/1013C07K7/06C07K7/08C07K11/00C07K11/02C07K19/00C12P21/02A61K38/00
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Abstract
An object of the present invention is to provide methods of discovering drugs effective for tough targets, which have conventionally been discovered only with difficulty. The present invention relates to novel methods for cyclizing peptide compounds, and novel peptide compounds and libraries comprising the same, to achieve the above object.
Claims (32)
1. A peptide compound-nucleic acid complex, wherein:
(i) the peptide compound contains a cyclic portion composed of 5 to 12 amino acids and amino acid analog residues in total,
(ii) the peptide compound contains at least three N-alkylated amino acids, wherein the N-alkylated amino acids are N-methylated amino acids,
(iii) the peptide compound has at least one amide bond formed between a side chain of an amino acid or an amino acid analog and a nitrogen atom of the main chain of another amino acid or amino acid analog,
(iv) the nucleic acid has a spacer at the 3′-end,
and wherein the C-terminal of the peptide compound forms a complex with the nucleic acid through the spacer.
2. The peptide compound-nucleic acid complex according to claim 1 , wherein the spacer is a peptide, RNA, DNA or hexaethylene glycol polymer.
3. The peptide compound-nucleic acid complex according to claim 1 , wherein the peptide compound is produced by a method comprising the steps of:
(a) translationally synthesizing a noncyclic peptide compound having 9 to 13 amino acids and amino acid analogs in total to form a noncyclic peptide compound, wherein the noncyclic peptide forms a complex with the nucleic acid through a linker, wherein the nucleic acid has a sequence encoding the noncyclic peptide compound; and
(b) cyclizing the noncyclic peptide compound of the complex translationally synthesized in Step (a) by an amide bond or a carbon-carbon bond to form the peptide compound having the cyclic portion composed of 5 to 12 amino acid and amino acid analog residues in total, thereby obtaining the peptide compound-nucleic acid complex.
4. A library comprising the peptide compound-nucleic acid complex according to claim 1 .
5. The library according to claim 4 , wherein the library is a display library.
6. The library according to claim 5 , wherein the display library is an mRNA display library.
7. A library comprising the peptide compound-nucleic acid complex according to claim 2 .
8. The library according to claim 7 , wherein the library is a display library.
9. The library according to claim 8 , wherein the display library is an mRNA display library.
10. A library comprising the peptide compound-nucleic acid complex according to claim 3 .
11. The library according to claim 10 , wherein the library is a display library.
12. The library according to claim 11 , wherein the display library is an mRNA display library.
13. A method for selecting a peptide compound having binding activity to a biomolecule, comprising bringing the library according to claim 4 into contact with a biomolecule to select a peptide compound having binding activity to the biomolecule.
14. A method for selecting a peptide compound having binding activity to a biomolecule, comprising bringing the library according to claim 7 into contact with a biomolecule to select a peptide compound having binding activity to the biomolecule.
15. A method for selecting a peptide compound having binding activity to a biomolecule, comprising bringing the library according to claim 10 into contact with a biomolecule to select a peptide compound having binding activity to the biomolecule.
16. A peptide compound-nucleic acid complex produced by a process comprising the steps of:
(a) translationally synthesizing a noncyclic peptide compound having 9 to 13 amino acids and amino acid analogs in total to form a noncyclic peptide compound-nucleic acid complex in which the noncyclic peptide compound links to a nucleic acid sequence encoding the noncyclic peptide compound through a linker; and
(b) cyclizing the noncyclic peptide compound of the complex translationally synthesized in Step (a) by an amide bond or a carbon-carbon bond to form a cyclic compound having a cyclic portion with 5 to 12 amino acid and amino acid analog residues in total,
wherein the nucleic acid sequence has a spacer at the 3′-end,
wherein the C-terminal of the noncyclic peptide compound forms a complex with the nucleic acid sequence through the spacer.
17. The peptide compound-nucleic acid complex according to claim 16 , wherein the spacer is a peptide, RNA, DNA or hexaethylene glycol polymer.
18. A library comprising the peptide compound-nucleic acid complex according to claim 17 .
19. The library according to claim 18 , wherein the library is a display library.
20. The library according to claim 19 , wherein the display library is an mRNA display library.
21. A method for selecting a peptide compound having binding activity to a biomolecule, comprising bringing the library according to claim 18 into contact with a biomolecule to select a peptide compound having binding activity to the biomolecule.
Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Nov 2, 2023
From: KARIYUKI, SHIORI; IIDA, TAKEO; KOJIMA, MIKI; TAKEYAMA, RYUICHI; TANADA, MIKIMASA; KOJIMA, TETSUO; IIKURA, HITOSHI; MATSUO, ATSUSHI; SHIRAISHI, TAKUYA; EMURA, TAKASHI; NAKANO, KAZUHIKO; TAKANO, KOJI; ASOU, KOUSUKE; TORIZAWA, TAKUYA; TAKANO, RYUSUKE; HISADA, NOZOMI; MURAO, NAOAKI; OHTA, ATSUSHI; KIMURA, KAORI; YAMAGISHI, YUSUKE; KATO, TATSUYA
To: CHUGAI SEIYAKU KABUSHIKI KAISHA
Reel/Frame 065445/0912 →
Continuity (4)
Continuation
14368564
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