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Rational design and synthesis of lumican stapled peptides for promoting corneal wound healing.
Verma, Sudhir; Ogata, Fernando T; Moreno, Isabel Y; Prinholato da Silva, Cassio; Marforio, Tainah Dorina; Calvaresi, Matteo; Sen, Mehmet; Coulson-Thomas, Vivien J; Gesteira, Tarsis Ferreira.
Afiliación
  • Verma S; College of Optometry, University of Houston, Houston, TX, USA; Department of Zoology, Deen Dayal Upadhyaya College, University of Delhi, New Delhi, India.
  • Ogata FT; College of Optometry, University of Houston, Houston, TX, USA.
  • Moreno IY; College of Optometry, University of Houston, Houston, TX, USA.
  • Prinholato da Silva C; College of Optometry, University of Houston, Houston, TX, USA.
  • Marforio TD; Department of Chemistry "Giacomo Ciamician", Alma Mater Studiorum - University of Bologna, Italy.
  • Calvaresi M; Department of Chemistry "Giacomo Ciamician", Alma Mater Studiorum - University of Bologna, Italy.
  • Sen M; Department of Biology and Biochemistry, University of Houston, Houston, TX, USA.
  • Coulson-Thomas VJ; College of Optometry, University of Houston, Houston, TX, USA.
  • Gesteira TF; College of Optometry, University of Houston, Houston, TX, USA. Electronic address: tgferrei@central.uh.edu.
Ocul Surf ; 30: 168-178, 2023 Oct.
Article en En | MEDLINE | ID: mdl-37742739
PURPOSE: Lumican is a major extracellular matrix (ECM) component in the cornea that is upregulated after injury and promotes corneal wound healing. We have recently shown that peptides designed based on the 13 C-terminal amino acids of lumican (LumC13 and LumC13C-A) are able to recapitulate the effects of lumican on promoting corneal wound healing. Herein we used computational chemistry to develop peptide mimetics derived from LumC13C-A with increased stability and half-life that are biologically active and non-toxic, thereby promoting corneal wound healing with increased pharmacological potential. METHODS: Different peptides staples were rationalized using LumC13C-A sequence by computational chemistry, docked to TGFßRI and the interface binding energies compared. Lowest scoring peptides were synthesized, and the toxicity of peptides tested using CCK8-based cell viability assay. The efficacy of the stapled peptides at promoting corneal wound healing was tested using a proliferation assay, an in vitro scratch assay using human corneal epithelial cells and an in vivo murine corneal debridement wound healing model. RESULTS: Binding free energies were calculated using MMGBSA algorithm, and peptides LumC13C and LumC13S5 displayed superior binding to ALK5 compared to the non-stapled peptide LumC13C-A. The presence of the hydrocarbon staple in LumC13C enhances the stability of the α-helical conformation, thereby facilitating more optimal interactions with the ALK5 receptor. The stapled peptides do not present cytotoxic effects on human corneal epithelial cells at a 300 nM concentration. Similar to lumican and LumC13C-A, both C13C and LumC13S5 significantly promote corneal wound healing both in vitro and in vivo. CONCLUSIONS: Highly stable and non-toxic stapled peptides designed based on LumC13, significantly promote corneal wound healing. As a proof of principle, our data shows that more stable and pharmacologically relevant peptides can be designed based on endogenous peptide sequences for treating various corneal pathologies.
Asunto(s)

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Epitelio Corneal / Lesiones de la Cornea Tipo de estudio: Prognostic_studies Límite: Animals / Humans Idioma: En Revista: Ocul Surf Año: 2023 Tipo del documento: Article País de afiliación: India Pais de publicación: Estados Unidos

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Epitelio Corneal / Lesiones de la Cornea Tipo de estudio: Prognostic_studies Límite: Animals / Humans Idioma: En Revista: Ocul Surf Año: 2023 Tipo del documento: Article País de afiliación: India Pais de publicación: Estados Unidos