发明公开
- 专利标题: A PROCESS FOR PRODUCING EGF
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申请号: US18251493申请日: 2021-11-05
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公开(公告)号: US20240002460A1公开(公告)日: 2024-01-04
- 发明人: Kleomenis Barlos , Konstantinos Barlos
- 申请人: CHEMICAL & BIOPHARMACEUTICAL LABORATORIES OF PATRAS S.A.
- 申请人地址: GR Patras
- 专利权人: CHEMICAL & BIOPHARMACEUTICAL LABORATORIES OF PATRAS S.A.
- 当前专利权人: CHEMICAL & BIOPHARMACEUTICAL LABORATORIES OF PATRAS S.A.
- 当前专利权人地址: GR Patras
- 优先权: GR 200100690 2020.11.20
- 国际申请: PCT/IB2021/060271 2021.11.05
- 进入国家日期: 2023-05-02
- 主分类号: C07K14/495
- IPC分类号: C07K14/495
摘要:
The present invention relates to a process for preparing an epidermal growth factor-like peptide (EGF-like peptide) comprising the following amino acid sequence, C1(X)7C2(X)4-5C3(X)10-13C4(X)C5(X)8C6 [SEQ NO: 49] wherein C1-C6 are each cysteine and each X is independently a natural or unnatural amino acid, and wherein said EGF-like peptide has three intramolecular disulfide bonds; said process comprising the steps of: (I) preparing a first peptide fragment wherein the N-terminal amino acid is protected by a protecting group PG1, which is selected from Boo and Fmoc; (II) preparing a second peptide fragment wherein the C-terminal amino acid is protected by a protecting group PG2, which is selected from trityl, chlorotrityl and t-butyl; and wherein the amino acid side chains in said first and second peptide fragments are optionally protected; (III) coupling the C-terminal amino acid of said first peptide fragment with the N-terminal amino acid of said second peptide fragment in solution to form a linear protected EGF-like peptide; (IV)(a)(i) treating the linear protected EGF-like peptide formed in step (III) with iodine to form an oxidized mixture; (ii) globally deprotecting the oxidized mixture obtained in step (IV)(a)(i) by treating with trifluoroacetic acid (TFA); (iii) treating the deprotected oxidized mixture obtained in step (IV)(a)(ii) with DMSO/DTT to form a cmde EGF-like peptide; or (IV)(b)(i) globally deprotecting the linear protected EGF-like peptide obtained in step (III) by treating with trifluoroacetic acid (TFA); (ii) treating the deprotected mixture obtained in step (IV)(b)(i) with DMSO to form a cmde EGF-like peptide; and (V) optionally purifying the crude EGF-like peptide. Further aspects of the invention relate to processes for preparing EGF-like peptides using various fragment condensations.
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