Self-assembling peptides incorporating modifications and...

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 14/435 (2006.01) A61K 38/16 (2006.01) A61K 47/48 (2006.01) C07K 14/78 (2006.01) C07K 16/00 (2006.01) C12M 1/34 (2006.01)

Patent

CA 2530482

The invention provides a self-assembling peptide comprising (a) a first amino acid domain that mediates self-assembly, wherein the domain comprises alternating hydrophobic and hydrophilic amino acids that are complementary and structurally compatible and self-assemble into a macroscopic structure when present in unmodified form; and (b) a second amino acid domain that does not self-assemble in isolated form. In certain embodiments of the invention the second amino acid domain comprises a biologically active peptide motif, e.g., a peptide motif found in a naturally occurring protein, or a target site for an interaction with a biomolecule. In certain embodiments of the invention the naturally occurring protein is a component of the extracellular matrix, e.g., a component of the basement membrane. The invention further provides scaffolds comprising the self-assembling peptides and methods of using the scaffolds including for cell culture, tissue engineering, and tissue repair.

L'invention concerne un peptide autoassemblé, qui comprend: a) un premier domaine d'acides aminés favorisant l'autoassemblage, ledit domaine comprenant des acides aminés hydrophobes et hydrophiles alternés et complémentaires, dont la structure est compatible et s'autoassemble en une structure macroscopique lorsqu'elle est présente sous une forme non modifiée; et b) un second domaine d'acides aminés qui ne s'autoassemble pas sous une forme isolée. Dans certains modes de réalisation, le second domaine d'acides aminés comprend un motif peptidique biologiquement actif, p. ex. un motif peptidique trouvé dans une protéine d'origine naturelle, ou un site cible permettant une interaction avec un biomolécule. Dans certains modes de réalisation, la protéine d'origine naturelle est un constituant de la matrice extracellulaire, p. ex. un constituant de la membrane sous-jacente. L'invention concerne en outre des échafaudages comprenant les peptides autoassemblés, et des méthodes d'utilisation des échafaudages, notamment pour la culture cellulaire, le génie tissulaire ou la réparation de tissus.

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