Combinatorial Libraries of Bipodal Binders of the Insulin Receptor.

Autor: Selicharová I; Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo n. 2, 16610, Praha 6, Czech Republic., Fabre B; Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo n. 2, 16610, Praha 6, Czech Republic., Soledad Garre Hernández M; Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo n. 2, 16610, Praha 6, Czech Republic., Lubos M; Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo n. 2, 16610, Praha 6, Czech Republic., Pícha J; Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo n. 2, 16610, Praha 6, Czech Republic., Voburka Z; Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo n. 2, 16610, Praha 6, Czech Republic., Mitrová K; Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo n. 2, 16610, Praha 6, Czech Republic., Jiráček J; Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo n. 2, 16610, Praha 6, Czech Republic.
Jazyk: angličtina
Zdroj: ChemMedChem [ChemMedChem] 2024 Jun 03; Vol. 19 (11), pp. e202400145. Date of Electronic Publication: 2024 Apr 11.
DOI: 10.1002/cmdc.202400145
Abstrakt: The binding process of insulin to its transmembrane receptor entails a sophisticated interplay between two proteins, each possessing two binding sites. Given the difficulties associated with the use of insulin in the treatment of diabetes, despite its remarkable efficacy, there is interest in smaller and more stable compounds than the native hormone that would effectively activate the receptor. Our study adopts a strategy focused on synthesizing extensive combinatorial libraries of bipodal compounds consisting of two distinct peptides linked to a molecular scaffold. These constructs, evaluated in a resin bead-bound format, were designed to assess their binding to the insulin receptor. Despite notable nonspecific binding, our approach successfully generated and tested millions of compounds. Rigorous evaluations via flow cytometry and specific antibodies revealed peptide sequences with specific interactions at either receptor binding Site 1 or 2. Notably, these sequences bear similarity to peptides discovered through phage display by other researchers. This convergence of chemical and biological methods underscores nature's beauty, revealing general principles in peptide binding to the insulin receptor. Overall, our study deepens the understanding of molecular interactions in ligand binding to the insulin receptor, highlighting the challenges of targeting large proteins with small synthetic peptides.
(© 2024 The Authors. ChemMedChem published by Wiley-VCH GmbH.)
Databáze: MEDLINE
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