Abstract: Methods which utilize a self-assembled structure formed of a plurality of peptides being of from 2 to 6 amino acids in length, and comprising at least one aromatic amino acid residue, wherein the self-assembled structure is capable of interacting with oxygen, are provided herewith. The methods may be for controlling (e.g., reducing) a concentration of free oxygen in an environment, and/or for transporting oxygen from a first environment to a second environment. Further described herein is a self-assembled structure as described herein having oxygen interacted therewith. Further described herein is a composition comprising the self-assembled structure and substance which is oxygen-sensitive and/or participates in an oxygen-sensitive reaction incorporated in the self-assembled structure, systems comprising such a composition and methods employing the composition or system.

Abstract: A composition including nano- or microspheres, and/or tubular nanostructures, each made of a plurality of aromatic dipeptides including end-capping modified aromatic dipeptides, non-modified aromatic dipeptides, or a combination thereof; and encapsulating an esterase or a functional fragment thereof; as well as methods of use. The plurality of aromatic dipeptides may include the end-capping modified aromatic dipeptides only.

Abstract: Compositions comprising self-assembled hydrogel particles formed of short peptides which comprise one or more aromatic amino acid residue(s) in an inverted emulsion are disclosed. Such hydrogel particles which encapsulate an active agent and uses thereof in therapeutic and diagnostic applications are also disclosed.

Abstract: Ordered structures composed of a plurality of self-assembled peptide nucleic acid (PNA) monomers, and processes of generating same are provided. The plurality of PNA monomers includes modified PNA monomers which are N-protected PNA monomers and/or which feature at least one aromatic moiety attached to a backbone, a nucleobase and/or a nucleobase linkage unit of the PNA monomer. Tunable photonic crystals formed of the provided ordered structures, uses thereof and articles-of-manufacturing containing same are also provided.

Abstract: A composition containing a plurality of self-assembled nanostructures formed of a plurality of aromatic molecules which include an aromatic amino acid, and which exhibits an antibacterial activity is provided. The composition can be a dental composition which further comprises a dental formulation such as a curable dental formulation, for forming dental composite materials such as dental restorative composite materials. Processes of preparing the composition and uses thereof are also provided.

Abstract: Provided herein are composite structures that include a core fiber and a plurality of peptide-based self-assembled nanostructures attached thereto, wherein the nanostructures may be loaded with a bioactive agent, such that the composite structures may act as slow-release drug-delivery medical device. Also provided is process for producing the composite structures, and uses thereof.

Abstract: Hybrid hydrogels, made of a three-dimensional network of fibrillar nanostructures, at least a portion of the fibrillar nanostructures being formed of at least two different types of aromatic moieties, at least one type of the aromatic moieties being an end-capping modified aromatic dipeptide and at least another type of the aromatic moieties being an amine-modified halogenated aromatic amino acid, are provided. Also provided are processes of preparing the hybrid hydrogels and uses thereof.

Abstract: Ordered (e.g., self-assembled) structures, arranged from peptide nucleic acids and/or analogs thereof, are disclosed. The peptide nucleic acids forming the ordered structures comprise from 1 to 10 PNA backbone units, at least one comprising a guanine nucleobase or an analog thereof. Processes of generating the ordered structures, uses thereof and articles-of manufacturing, devices and systems containing same are also disclosed.

Abstract: Hybrid hydrogels formed of a plurality of peptides that are capable of self-assembling into a hydrogel in an aqueous solution and a biocompatible polymer that is characterized by high swelling capability, high elasticity and low mechanical strength are disclosed, with exemplary hybrid hydrogels being formed of a plurality of aromatic dipeptides and hyaluronic acid. The hybrid hydrogels are characterized by controllable mechanical and biological properties which can be adjusted by controlling the concentration ratio of the peptides and the polymer, and which average the mechanical and biological properties of the peptides and the polymer. Processes of preparing the hydrogels and uses thereof in pharmaceutical, cosmetic or cosmeceutic applications such as tissue engineering and/or regeneration are further disclosed.

Abstract: Provided are peptide-based nanostructures, as well as diagnostic and therapeutic methods using same.

Abstract: Ordered structures composed of a plurality of self-assembled peptide nucleic acid (PNA) monomers, and processes of generating same are provided. The plurality of PNA monomers includes modified PNA monomers which are N-protected PNA monomers and/or which feature at least one aromatic moiety attached to a backbone, a nucleobase and/or a nucleobase linkage unit of the PNA monomer. Tunable photonic crystals formed of the provided ordered structures, uses thereof and articles-of-manufacturing containing same are also provided.

Abstract: Ordered (e.g., self-assembled) structures, arranged from peptide nucleic acids and/or analogs thereof, are disclosed. The peptide nucleic acids forming the ordered structures comprise from 1 to 10 PNA backbone units, at least one comprising a guanine nucleobase or an analog thereof. Processes of generating the ordered structures, uses thereof and articles-of manufacturing, devices and systems containing same are also disclosed.

Abstract: Nanostructures made up from two or more types of short peptides (e.g., aromatic dipeptides), which differ from one another by the presence (or absence) of an end-capping moiety, are disclosed. The disclosed nanostructures exhibit a closed tubular structure, short average length and narrow length distribution. Also disclosed are processes of preparing the nanostructures, articles comprising the nanostructures, and use of the nanostructures in, for example, reinforcement of materials.

Abstract: Ordered (e.g., self-assembled) structures, arranged from peptide nucleic acids and/or analogs thereof, are disclosed. The peptide nucleic acids forming the ordered structures comprise from 1 to 10 PNA backbone units, at least one comprising a guanine nucleobase or an analog thereof. Processes of generating the ordered structures, uses thereof and articles-of manufacturing, devices and systems containing same are also disclosed.

Abstract: Hybrid hydrogels formed of a plurality of peptides that are capable of self-assembling into a hydrogel in an aqueous solution and a biocompatible polymer that is characterized by high swelling capability, high elasticity and low mechanical strength are disclosed, with exemplary hybrid hydrogels being formed of a plurality of aromatic dipeptides and hyaluronic acid. The hybrid hydrogels are characterized by controllable mechanical and biological properties which can be adjusted by controlling the concentration ratio of the peptides and the polymer, and which average the mechanical and biological properties of the peptides and the polymer. Processes of preparing the hydrogels and uses thereof in pharmaceutical, cosmetic or cosmeceutic applications such as tissue engineering and/or regeneration are further disclosed.

Abstract: Hybrid hydrogels formed of a plurality of peptides that are capable of self-assembling into a hydrogel in an aqueous solution and a biocompatible polymer that is characterized by high swelling capability, high elasticity and low mechanical strength are disclosed, with exemplary hybrid hydrogels being formed of a plurality of aromatic dipeptides and hyaluronic acid. The hybrid hydrogels are characterized by controllable mechanical and biological properties which can be adjusted by controlling the concentration ratio of the peptides and the polymer, and which average the mechanical and biological properties of the peptides and the polymer. Processes of preparing the hydrogels and uses thereof in pharmaceutical, cosmetic or cosmeceutic applications such as tissue engineering and/or regeneration are further disclosed.

Abstract: Nanostructures made up from two or more types of short peptides (e.g., aromatic dipeptides), which differ from one another by the presence (or absence) of an end-capping moiety, are disclosed. The disclosed nanostructures exhibit a closed tubular structure, short average length and narrow length distribution. Also disclosed are processes of preparing the nanostructures, articles comprising the nanostructures, and use of the nanostructures in, for example, reinforcement of materials.

Abstract: Ordered (e.g., self-assembled) structures, arranged from peptide nucleic acids and/or analogs thereof, are disclosed. The peptide nucleic acids forming the ordered structures comprise from 1 to 10 PNA backbone units, at least one comprising a guanine nucleobase or an analog thereof. Processes of generating the ordered structures, uses thereof and articles-of manufacturing, devices and systems containing same are also disclosed.

Abstract: The present invention discloses self-assembled bioadhesive anti-microbial, anti-fouling and/or anti-oxidant micro- and nano-structures comprising a plurality of amino acids or peptides, wherein each amino acid is an aromatic amino acid comprising a catecholic moiety, and/or each peptide comprises at least one aromatic amino acid comprising a catecholic moiety. Further disclosed are methods and kits for preparing these micro- and nano-structures. Further disclosed are uses of these micro- and nano-structures in pharmaceutical, cosmetic and medical devices applications.

Abstract: Compositions comprising self-assembled hydrogel particles formed of short peptides which comprise one or more aromatic amino acid residue(s) in an inverted emulsion are disclosed. Such hydrogel particles which encapsulate an active agent and uses thereof in therapeutic and diagnostic applications are also disclosed.