Provided herein are engineered nucleic acids (e.g., expression vectors, including viral vectors, such as lentiviral vectors, adenoviral vectors, AAV vectors, herpes viral vectors, and retroviral vectors) that encode OCT4; KLF4; SOX2; or any combination thereof that are useful, for example, in inducing cellular reprogramming, tissue repair, tissue regeneration, organ regeneration, reversing aging, or any combination thereof. Also provided herein are recombinant viruses (e.g., lentiviruses, alphaviruses, vaccinia viruses, adenoviruses, herpes viruses, retroviruses, or AAVs) comprising the engineered nucleic acids (e.g., engineered nucleic acids), engineered cells, compositions comprising the engineered nucleic acids, the recombinant viruses, engineered cells, engineered proteins, chemical agents that are capable of activating expression of OCT4; KLF4; SOX2; or any combination thereof, an engineered protein selected from the group consisting of OCT4; KLF4; SOX2; or any combination thereof, an antibody capable of activating expression of OCT4; KLF4; SOX2; or any combination thereof, and methods of treating a (e.g., ocular disease), preventing a disease (e.g., ocular disease), regulating (e.g., inducing or inducing and then stopping) cellular reprogramming, regulating tissue repair, regulating tissue regeneration, or any combination thereof).

The preparation method of a starch-based double-loaded functional nanoparticle includes: performing restrictive hydrolysis treatment on egg high-density lipoprotein using proteases to obtain the polypeptide; performing self-assembling on a mixed system containing the polypeptide and quercetin under the alkaline condition to form a micelle nanoparticle; performing covalent grafting reaction on a mixed system containing the micelle nanoparticle and anthocyanin under the alkaline condition to form a graft; and electrostatically compounding carboxymethyl dextrin with the graft to obtain the starch-based double-loaded functional nanoparticle. In the preparation method, raw materials derived from natural sources are used, and the self-assembled colloid nanoparticle with good properties can be obtained by adjusting the pH without any organic reagents. The obtained product has a nanoparticle size, has high antioxidant activity and stability against environmental stress, and can be widely applied to the fields of delivery of nutrients, stabilization of biologically active substances and the like.

The invention provides solid lipid nanoparticles (SLNs) which comprise gold, and are useful as vectors for the transfection of different types of nucleic acids. Different methods for obtaining such SLNs are also disclosed.

The disclosure describes nanocarried and/or microcarried jasmonate compounds and their pharmaceutical compositions, as well as use thereof for treating or preventing angiogenesis-related or NF-κB-related disorders. Also disclosed are methods of making the nanocarried and/or microcarried compounds and their compositions.

Disclosed are nanoparticles comprising an end-modified poly(β-amino ester) and an additive that is a sugar or sugar derivative, such as a sugar, a sugar alcohol or chitosan. The nanoparticles may be used in any field where polymers have been found useful, including in medical fields, particularly in drug delivery. The polymers are useful in delivering a polynucleotide such as DNA, RNA or siRNA, a small molecule or a protein. Also disclosed are compositions comprising said nanoparticles and an active agent, methods for preparing said nanoparticles, said nanoparticles and compositions for use in medicine, and in vitro methods using said nanoparticles and compositions.

Provided herein is chitosan dually derivatized with arginine and gluconic acid; and methods of making and using the same, e.g., for gene delivery in vivo.

The invention discloses a composition comprising surface modified iron oxide nanoparticles with citric acid modified cyclodextrin with a hydrodynamic diameter of less than 10 nm and a hydrophobic molecule.

The composition finds use in targeted delivery of a hydrophobic drug and as contrast agent in imaging applications.

A first problem is to provide a novel technique for forming hyaluronan into particles. Further, a second problem is to provide a novel technique suitable for production of a composite particle containing an anionic polymer and a peptide. Means for solving the first problem is a composite particle containing an anionic polymer, and a cationic polymer (except for chitosan) having a degree of cationization of 0.2 or more. Means for solving the second problem is to mix an anionic polymer and a peptide in an aqueous solvent having a pH of 5 or less.

Disclosed herein compositions of polysaccharides chemically cross-linked by aromatic dialdehydes. The compositions may be in form of polymeric sheets for a variety of applications. Disclosed also nano-sized particles comprising the polysaccharide chemically cross-linked by aromatic dialdehydes. The nano-sized particles may further comprise lipids and surfactants. Intranasal delivery of the nano-sized particles enables delivery of biologically active agents into the brain. Topical and transdermal delivery of the nano-sized particles enables delivery of biologically active agents for treatment of systemic or dermatological disorders. Methods of manufacturing and uses of the compositions are also disclosed.

The present invention relates to the field of methods for providing pharmaceutical compositions comprising poorly water-soluble drugs. In particular the present invention relates to compositions comprising stable, amorphous hybrid nanoparticles, comprising at least one protein kinase inhibitor and at least one polymeric stabilizing and matrix-forming component, useful in pharmaceutical compositions and in therapy.