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Development of a Potent Wound Healing Agent Based on the Liver Fluke Granulin Structural Fold
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    Development of a Potent Wound Healing Agent Based on the Liver Fluke Granulin Structural Fold
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    Centre for Biodiscovery and Molecular Development of Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns 4870, Queensland Australia
    Department of Microbiology, Immunology and Tropical Medicine and Research Center for Neglected Diseases of Poverty, School of Medicine and Health Sciences, George Washington University, Washington D.C. 20037, United States
    *For N.L.D.: phone, +61-7-4232 1815; E-mail, [email protected]
    *For A.L.: phone, +61-7-4232 1608; E-mail, [email protected]
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    Journal of Medicinal Chemistry

    Cite this: J. Med. Chem. 2017, 60, 10, 4258–4266
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    https://doi.org/10.1021/acs.jmedchem.7b00047
    Published April 20, 2017
    Copyright © 2017 American Chemical Society

    Abstract

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    Granulins are a family of protein growth factors that are involved in cell proliferation. An orthologue of granulin from the human parasitic liver fluke Opisthorchis viverrini, known as Ov-GRN-1, induces angiogenesis and accelerates wound repair. Recombinant Ov-GRN-1 production is complex and poses an obstacle for clinical development. To identify the bioactive region(s) of Ov-GRN-1, four truncated N-terminal analogues were synthesized and characterized structurally using NMR spectroscopy. Peptides that contained only two native disulfide bonds lack the characteristic granulin β-hairpin structure. Remarkably, the introduction of a non-native disulfide bond was critical for formation of β-hairpin structure. Despite this structural difference, both two and three disulfide-bonded peptides drove proliferation of a human cholangiocyte cell line and demonstrated potent wound healing in mice. Peptides derived from Ov-GRN-1 are leads for novel wound healing therapeutics, as they are likely less immunogenic than the full-length protein and more convenient to produce.

    Copyright © 2017 American Chemical Society

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    Supporting Information

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    The Supporting Information is available free of charge on the ACS Publications website at DOI: 10.1021/acs.jmedchem.7b00047.

    • Structure statistics for Ov-GRN12–34 and Ov-GRN12–35_3s; chemical shift analysis of carp granulin-1; analysis of different disulfide connectivities for Ov-GRN12–35_3s; wound healing photos (PDF)

    • Ov-GRN12–34 (PDB)

    • Ov-GRN12–35 (PDB)

    • PDB 1QGM (PDB)

    Accession Codes

    The PDB ID codes are 5UJH and 5UJG for Ov-GRN12–34 and Ov-GRN12–35_3s, respectively. Authors will release the atomics coordinates and experimental data upon article publication.

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    Most electronic Supporting Information files are available without a subscription to ACS Web Editions. Such files may be downloaded by article for research use (if there is a public use license linked to the relevant article, that license may permit other uses). Permission may be obtained from ACS for other uses through requests via the RightsLink permission system: http://pubs.acs.org/page/copyright/permissions.html.

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    This article is cited by 32 publications.

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    Journal of Medicinal Chemistry

    Cite this: J. Med. Chem. 2017, 60, 10, 4258–4266
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acs.jmedchem.7b00047
    Published April 20, 2017
    Copyright © 2017 American Chemical Society

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