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Review
. 2011 Jan;5(1):24-51.
doi: 10.2174/187221111794109510.

Self-assembling Peptides: Implications for Patenting in Drug Delivery and Tissue Engineering

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Review

Self-assembling Peptides: Implications for Patenting in Drug Delivery and Tissue Engineering

Pradeep Kumar et al. Recent Pat Drug Deliv Formul. .

Abstract

In this paper, a comprehensive review of recent patents concerning the molecular self-assembly of peptides, peptide amphiphiles and peptidomimetics into molecules through nanoarchitectures to hydrogels is provided. Their potential applications in the field of drug delivery and tissue engineering have been highlighted. The design rules of this rapidly growing field are centered mainly on the construction of peptides in the form of peptide amphiphiles, aromatic short peptide derivatives, all-amino acid peptide amphiphiles, lipidated peptides with single and multiple alkyl chains and peptide-based block copolymers and polymer peptide conjugates. The interest in patenting of self-assembling peptides is also driven by their type (I, II, III and IV) and their ability to form well-regulated highly-ordered structures such as β-sheets/β-hairpins, α-helices/coiled coils and to hierarchically self-organize into supra-molecular structures. The applicability of these systems in cell culture scaffolds for tissue engineering, drug and gene delivery and as templates for nanofabrication and biomineralization has inspired various groups over the globe. This resulted in development of self-assembling peptides as synthetic replacements of biological tissues, designing materials for specific medical applications, and materials for new applications such as diagnostic technologies. Furthermore, biologically derived and commercially available systems are also discussed herein along with a brief account of various awarded and pending patents in the past 10 years. An overview of the diversity of the patent applications is also provided for self-assembling systems based on nano- and/or micro-scale such as fibers, fibrils, gels, hydrogels, vesicles, particles, micelles, bilayers and scaffolds.

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