Provided are synthetic schemes for the synthesis of a derivatized chitosan polymer, grafted with polyethylene glycol (PEG) and a peptide such as a cell-targeting/cell penetrating peptide. In alternative embodiments, provided are synthetic schemes for the preparation of a peptide tagged PEGylated phthaloyl chitosan (CS-O-PEG-peptide), or a CS-O-PEG-TAT if the peptide is a TAT. Provided are synthetic schemes for the preparation of a PEGylated Phthaloyl Chitosan (CS-PH-O-PEG-peptide), or a CS-PH-O-PEG-TAT if the peptide is a TAT. In alternative embodiments, provided are protocols and synthetic schemes for the preparation of a phthaloyl chitosan and a homo-functional di-carboxylic acid polyethylene glycol (COOH-PEG-COOH). Provided are protocols and synthetic schemes for the preparation of a peptide tagged PEGylated chitosan (CS-O-PEG-peptide). Provided are peptide-tagged PEGylated chitosan (CS-O-PEG-peptide) (optionally CS-O-PEG-TAT if the peptide is a TAT) made by a method or synthetic scheme as provided herein.

The present invention relates to a biocompatible nanoparticle and a use thereof and, more specifically, to a biocompatible nanoparticle formed by irradiation an electron beam to an aqueous solution comprising at least one substance selected from the group consisting of a polysaccharide, a derivative thereof and a polyethylene glycol, thereby inducing inter-molecular cross-linking or intra-molecular cross-linking, and to a use of the biocompatible nanoparticle in a drug carrier, a contrast agent, a diagnostic agent or an intestinal adhesion prevention agent or for disease prevention and treatment.

This disclosure provides methods of making functionalized PEG iron oxide nanoparticles.

The present invention pertains to a composition comprising at least one biocompatible and biodegradable polymer, said polymer further comprising nanocarriers wherein said nanocarriers comprise a drug. Moreover, also encompassed by the invention is the use of said composition in the treatment of a disease and a method for manufacturing said composition.

Provided herein are various functionalized particles comprising a shell, dendritic linkers, and functional moieties. The dendrimer linkers allow very large numbers of functional moieties to be bound to the shell. The functional moieties may comprise peptides which synergistically promote platelet aggregation and hemostasis in wounded tissues. The functionalized particles may further be effectors of wound healing, thrombolysis and other functions, depending on the selection of functional moiety. Functionalized polymers having these functions are provided as well.

Blood-brain barrier permeable peptide compositions that contain variable antigen binding domains from camelid and/or shark heavy-chain only single-domain antibodies are described. The variable antigen binding domains of the peptide compositions bind to therapeutic and diagnostic biomarkers in the central nervous system, such as the amyloid-beta peptide biomarker for Alzheimer's disease. The peptide compositions contain constant domains from human IgG, camelid IgG, and/or shark IgNAR. The peptide compositions include heavy-chain only single-domain antibodies and compositions with one or more variable antigen binding domain bound to one or more constant domains.

The present invention provides targeting probe, imaging probes, and probes for use as a medicament to treat damaged cartilage, where the probe targets injured tissue and can then be imaged and/or release agents to trigger the migration of surrounding chondrocytes from healthy tissue to injured tissue and/or recruit synovial stem cells.

The present invention relates to biofunctionalized nanoparticles and uses thereof in adoptive cell therapy. In particular, the present invention relates to a nanoparticle comprising an amount of at least one antigen and an amount of at least one antibody having specificity for a B cell receptor wherein the antigen and antibody are attached to the surface of the nanoparticle.

A nanocomposite, a preparation method thereof and a method for treating cancer using the same are provided. The preparation method includes: mixing a first solution including an amphiphilic chitosan and a second solution including anti-cancer components, wherein the anti-cancer components includes gemcitabine, curcumin, the derivatives and combinations thereof; forming a nanoparticle encapsulating the anti-cancer component by a self-assembling process of the amphiphilic chitosan, and binding the nanoparticle with a targeting molecule having specificity to a cancer so as to obtain a nanocomposite. When dissolving the nanocomposite of the present invention after drying into water phase, the nanocomposite still has the same morphology and characteristic before it is dried, so it is convenient for storage and delivery. Additionally, the preferable ratio of gemcitabine and demethoxycurcumin will bring a synergistic effect on cancer therapy.

A protein functionalized anti-inflammatory nanoparticle and a method of preparing the protein functionalized anti-inflammatory nanoparticle is disclosed. The protein functionalized anti-inflammatory nanoparticle includes a central core comprising a hyaluronic acid coated chitosan nanoparticle and surface adsorbed anti-inflammatory proteins forming an outer shell around the central core, wherein the surface adsorbed anti-inflammatory protein is AGP (alpha-1-acid glycoprotein). The method of preparation includes dispersing chitosan nanoparticles in acetic acid/acetate buffer to produce a dispersion, adding an equal amount of acetate buffer containing hyaluronic acid under vigorous stirring to form hyaluronic coated chitosan nanoparticle (HA-CS) and functionalizing the hyaluronic coated chitosan nanoparticle with surface adsorbing anti-inflammatory protein AGP, to form the protein functionalized anti-inflammatory nanoparticle.