Abstract: A chlorotoxin conjugate detectable by fluorescence imaging that allows for intra-operative visualization of cancerous tissues, compositions that include the chlorotoxin conjugate, and methods for using the chlorotoxin conjugate.

Abstract: The present invention provides compositions comprising an interpolymer of chitosan and polyethylene glycol, wherein the interpolymer is a liquid below 25° C. and a gel above 35° C. The present invention also provides methods for using the compositions to deliver drugs to a living body over time.

Abstract: A centrifugal electrospinning apparatus, centrifugal electrospinning method for the production of fibrous structures, and electrospun fibrous structures are provided.

Abstract: Nanoparticle having a poly(beta-amino ester) coating. The poly(beta-amino ester) coating includes one or more therapeutic agents that can be delivered by the particle and one or more anchoring groups that couple the polymer to the nanoparticle's core surface. In certain embodiments, the poly(beta-amino ester) includes one or more polyalkylene oxide groups. The poly(beta-amino ester) can further include a targeting agent to target the nanoparticle to a site of interest and a diagnostic agent that allows for imaging of the particle. Methods for making and using the nanoparticles are also provided.

Abstract: Guided cell patterning arrays for single cell patterning are disclosed. The arrays include a plurality of cell adhesion sites that are individually isolated on an inert surface. Each cell adhesion site has one or more cell adhesion peptides having affinity to a cell surface receptor. The inert surface is resistant to cell adhesion.

Abstract: The present invention provides porous structures that each comprise chitosan, alginate and divalent metal cations, wherein: (a) the chitosan is ionically linked to the alginate; and (b) the structure is porous and has a compressive yield strength of at least 0.35 MPa. The present invention also provides methods for making the porous structures, and methods for using the porous structures as substrates to grow living cells.

Abstract: Nanoparticle system and method for labeling, detecting, and treating biological particles. In the method, targeting functionality (fusion protein) and therapeutic/imaging modalities (nanoparticle) are separated.

Abstract: Polyarginine-coated nanoparticle, and methods for making and using the nanoparticle. The nanoparticle can have a core that includes a material that imparts magnetic resonance imaging activity to the particle and, optionally, include one or more of an associated therapeutic agent, targeting agent, and diagnostic agent.

Abstract: Nanoparticle having a coating comprising a polyethylenimine and a chitosan-polyethylene oxide oligomer copolymer, and methods for making and using the nanoparticle. The nanoparticle can have a core that includes a material that imparts magnetic resonance imaging activity to the particle and, optionally, include one or more of an associated therapeutic agent, targeting agent, and fluorescent agent.

Abstract: Alginate nanofibers, scaffolds that include alginate nanofibers, implantable devices that include alginate nanofibers, and methods for making the alginate nanofibers by electrospinning.

Abstract: Methods for culturing cancer cells in vitro using a three-dimensional scaffold, scaffolds that include the cultured cancer cells, and methods for using the cultured cancer cells and the scaffolds that include the cultured cancer cells in anticancer therapeutic drug development.

Abstract: Method for labeling and detecting liver cancer cells using an anti-glycipan-3 antibody as a targeting agent and a magnetic nanoparticle as an imaging agent.

Abstract: Alginate nanofibers, scaffolds that include alginate nanofibers, implantable devices that include alginate nanofibers, and methods for making the alginate nanofibers by electrospinning.

Abstract: Methotrexate-modified nanoparticles that target tumors, compositions that include the nanoparticles, methods of imaging tissues using the nanoparticles, and methods for treating tissues using the nanoparticles.

Abstract: Alginate nanofibers, scaffolds that include alginate nanofibers, implantable devices that include alginate nanofibers, and methods for making the alginate nanofibers by electrospinning.

Abstract: The present invention provides nanoparticles having a core comprising a magnetic material and having a surface, where the surface may be operatively linked to an antigenic peptide-major histocompatibility complex (MHC) monomer. The antigenic peptide-MHC monomer may then be recognized by a T cell receptor. These nanoparticles may further comprise a signal-generating label, such as a fluorophore. Methods employing nanoparticles of the present invention may involve magnetic resonance imaging and/or fluorescence detection, such that cell imaging and localization are performed.

Abstract: A method for expanding a population of stem cells using a porous scaffold, a porous scaffold populated with renewed stem cells, methods of administering stem cells using the porous scaffold and cells collected from the porous scaffold, and methods for tissue engineering and treating a condition treatable by administration of stem cells using the porous scaffold and cells collected from the porous scaffold.

Abstract: Nanoparticle having a chitosan-polyethylene oxide oligomer copolymer coating, and methods for making and using the nanoparticle are provided. The nanoparticle can have a core that includes a material that imparts magnetic resonance imaging activity to the particle and, optionally, one or more of an associated targeting agent, fluorescent agent, or therapeutic agent.

Abstract: The present invention provides porous structures that each comprise chitosan, alginate and divalent metal cations, wherein: (a) the chitosan is ionically linked to the alginate; and (b) the structure is porous and has a compressive yield strength of at least 0.35 MPa. The present invention also provides methods for making the porous structures, and methods for using the porous structures as substrates to grow living cells.

Abstract: A hollow fibrous conduit for promoting regeneration of a severed nerve, comprising a first end for coapting the conduit to a first end of a severed nerve and second end for coapting the conduit to a second end of the severed nerve, the hollow fibrous conduit comprising chitosan-poly(caprolactone) fibers. Methods for making the conduit and methods for using the conduit for nerve regeneration.