The invention relates to a method for photoreleasing a moiety G from a compound of the formula A-G. The methods of the present invention comprise irradiating a composition comprising the compound of the formula A-G at a wavelength of >500 nm, so as to photorelease the moiety G from the moiety A; wherein the moiety A comprises a chromophore and the moiety G comprises an organic compound.

This invention, in one aspect, relates generally to methods for optically modulating pain in animals and human. The invention provides method for the use of opsin for modulating pain, wherein optical stimulation of specific neurons and/or other cells in targeted regions of the nervous system sensitized by opsin, using genetic technologies, leads to significant reduction of pain perception to noxious stimuli. Further, the invention provides a method for inhibition of pain without use of exogenous opsin, wherein visual stimulation of eye (having endogenous opsin) is carried out. The invention also includes device(s) for controlled modulation neural and/or cellular activities in brain, eye and peripheral nervous system in order to treat different forms of chronic pain.

Aspects of the disclosure include compositions, devices, systems and methods for optogenetic modulation of action potentials in target cells. The subject devices include light-generating devices, control devices, and delivery devices for delivering light-responsive polypeptides, or nucleic acids encoding same, to target cells. The subject compositions and systems include light-activated polypeptides, nucleic acids comprising nucleotide sequences encoding these polypeptides, as well as expression systems that facilitate expression of these polypeptides in target cells. Also provided are methods of using the subject devices and systems to optogenetically manipulate action potentials in target cells, e.g., to treat a neurological or psychiatric condition in a human or animal subject.

The present document describes methods of use of photo activated compositions for oral disinfection and/or treatments which comprise at least one oxidant, at least one photoactivator capable of activating the oxidant, and at least one healing factor chosen from hyaluronic acid, glucosamine and allantoin, in association with a pharmacologically acceptable carrier.

The present document describes methods of use of photo activated compositions for oral disinfection and/or treatments which comprise at least one oxidant, at least one photoactivator capable of activating the oxidant, and at least one healing factor chosen from hyaluronic acid, glucosamine and allantoin, in association with a pharmacologically acceptable carrier.

Triazabutadiene molecules for use in applications. e.g., those involving fluorogenic molecules, e.g., triazabutadiene molecules configured to generate a fluorescent compound when combined with a second molecule, e.g., upon reaction with a tyrosine molecule or other appropriate molecule; and protected triazabutadiene molecules that are stable in acidic conditions and are adapted to release an active (e.g., acid-labile} triazabutadiene molecule upon appropriate conditions, and methods for producing and using said protected or releasable triazabutadiene molecules (and products of cleavage).

Products, compositions, systems, and methods for modifying a target structure which mediates or is associated with a biological activity, including treatment of conditions, disorders, or diseases mediated by or associated with a target structure, such as a virus, cell, subcellular structure or extracellular structure. The methods may be performed in situ in a non-invasive manner by placing a nanoparticle having a metallic shell on at least a fraction of a surface in a vicinity of a target structure in a subject and applying an initiation energy to a subject thus producing an effect on or change to the target structure directly or via a modulation agent. The nanoparticle is configured, upon exposure to a first wavelength .sub.1, to generate a second wavelength .sub.2 of radiation having a higher energy than the first wavelength .sub.1. The methods may further be performed by application of an initiation energy to a subject in situ to activate a pharmaceutical agent directly or via an energy modulation agent, optionally in the presence of one or more plasmonics active agents, thus producing an effect on or change to the target structure. Kits containing products or compositions formulated or configured and systems for use in practicing these methods.

A light-activated construct composed of two photoreceptive polypeptide domains connected to one another by a flexible linker is provided, as is a fusion protein containing the same and polynucleotides encoding said construct and fusion protein. Methods of making and using the light-activated construct and fusion protein are also provided.

The present disclosure features a protein-polymer conjugate, including a multivalent polymer building block, a stimuli-responsive protein covalently conjugated to the multivalent polymer building block to provide a protein-polymer conjugate, wherein the protein undergoes a modification upon exposure to a predetermined stimulus, and the protein modification triggers a physical and/or chemical response in the protein-polymer conjugate.

A method for intracellular delivery of single proteins or other cargo molecules by encapsulation within nanocapsules formed by interfacial polymerization of one or more types of monomers and selected protease cleavable cross-linkers is provided. The thin positively charged capsules are readily brought into the cytosol of target cells by endocytosis. The capsules are degraded by the action of endogenous proteases or co-delivered proteases on the cross-linkers releasing the functional cargo unaltered. The cross-linkers can be adapted to be cleavable by specific enzymes selected from available intracellular enzymes within the target cell or co-delivered or self-cleaving when the cargo itself is a protease. The nanocapsules produced by the methods have been shown to have long-term stability, high cell penetration capability, low toxicity and efficient protease-modulated specific degradability without affecting cargo protein function.