Abstract: Provided are methods of controlling disassociation of cells from a carrier, compositions, and methods of collecting cells. The methods of controlling disassociation of cells from a carrier may include contacting a polymeric carrier with one or more digesting agents to disassociate at least a portion of a plurality of cells from the polymeric carrier. The polymeric carrier may be crosslinked with a crosslinker including at least one of a redox sensitive moiety, a UV light sensitive moiety, a pH sensitive moiety, and a temperature sensitive moiety.

Abstract: Provided are methods of controlling disassociation of cells from a carrier, compositions, and methods of collecting cells. The methods of controlling disassociation of cells from a carrier may include contacting a polymeric carrier with one or more digesting agents to disassociate at least a portion of a plurality of cells from the polymeric carrier. The polymeric carrier may be crosslinked with a crosslinker including at least one of a redox sensitive moiety, a UV light sensitive moiety, a pH sensitive moiety, and a temperature sensitive moiety.

Abstract: Disclosed are biocompatible adhesive materials for adhering, sealing, or treating one or more biological tissues. Generally, the biocompatible adhesive materials comprise a dendrimer component and one or more polymer components. These biocompatible adhesive materials are useful as tissue adhesives, tissue sealants, tissue treatments, matrix materials, fillers, coatings, or a combination thereof.

Abstract: Methods, compositions, kits, and drug delivery devices are provided for treating, adhering, or sealing biological tissues. The methods include combining a first solution that includes an oligomer/polymer component and a second solution that includes a dendrimer component, and at least one of the oligomer/polymer component and dendrimer component includes at least one substituent that is capable of photoreversible dimerization. The reversible dimerization of the substituent may allow for the reversible dimerization and/or polymerization of one or more components. The substituent that is capable of photoreversible dimerization may be active by the application of light, such as UV light.

Abstract: Methods for treating, adhering, or sealing biological tissue are provided. The methods include combining solutions containing a polymer component and a dendrimer component capable of reacting with each other, and at least one of the components includes a substituent capable of photoreversible dimerization that can be reversibly dimerized. Drug delivery compositions and kits containing these two components also are provided.

Abstract: Provided are methods of controlling disassociation of cells from a carrier, compositions, and methods of collecting cells. The methods of controlling disassociation of cells from a carrier may include contacting a polymeric carrier with one or more digesting agents to disassociate at least a portion of a plurality of cells from the polymeric carrier. The polymeric carrier may be crosslinked with a crosslinker including at least one of a redox sensitive moiety, a UV light sensitive moiety, a pH sensitive moiety, and a temperature sensitive moiety.

Abstract: Provided herein are narrowly distributed multi-armed polyethylene glycol compounds, and hydrogels containing the same. Also provided are methods for treating, adhering, or sealing a biological tissue with hydrogels, and kits for making a hydrogel. Drug releasing compositions also are provided that include a narrowly distributed multi-armed polyethylene glycol compound.

Abstract: Provided herein are methods for treating, adhering, or sealing biological tissue with a material, such as a hydrogel, that may include phyllosilicate nanoplatelets. The phyllosilicate nanoplatelets can have a high aspect ratio, a low aspect ratio, or be a mixture of high aspect ratio and low aspect ratio nanoplatelets. Drug releasing compositions and kits also are provided herein.

Abstract: Provided herein are compositions that include a metal nanoparticle functionalized with a miRNA and a targeting molecule. The compositions may be used to prevent or reduce the rate of metastasis of cancer cells. The compositions also may include a drug, such as a chemotherapeutic agent. The compositions also may include a hydrogel in which the metal nanoparticles are dispersed. Methods of miRNA and/or drug delivery and kits also are provided.

Abstract: Abstract of the Disclosure Provided herein are compositions that include a dendrimer to which a drug and a binding peptide are conjugated. The binding peptide may be configured to bind to a receptor that is overexpressed by a diseased cell, such as a cancer cell. The compositions may include a hydrogel in which the dendrimer-drug conjugate is dispersed. Methods of drug delivery and kits also are provided.

Abstract: Provided herein are functionalized nanoparticles and compositions containing functionalized nanoparticles. The functionalized nanoparticles include a first metal nanoparticle functionalized with a drug and a targeting biomolecule, and a second metal nanoparticle functionalized with an siRNA and a targeting biomolecule. The compositions include the first metal nanoparticle and the second metal nanoparticle. Kits and methods of drug delivery also are provided.

Abstract: Provided herein are narrowly distributed multi-armed polyethylene glycol compounds, and hydrogels containing the same. Also provided are methods for treating, adhering, or sealing a biological tissue with hydrogels, and kits for making a hydrogel. Drug releasing compositions also are provided that include a narrowly distributed multi-armed polyethylene glycol compound.

Abstract: Methods, compositions, kits, and drug delivery devices are provided for treating, adhering, or sealing biological tissues. The methods include combining a first solution that includes an oligomer/polymer component and a second solution that includes a dendrimer component, and at least one of the oligomer/polymer component and dendrimer component includes at least one substituent that is capable of photoreversible dimerization. The reversible dimerization of the substituent may allow for the reversible dimerization and/or polymerization of one or more components. The substituent that is capable of photoreversible dimerization may be active by the application of light, such as UV light.

Abstract: Methods for treating, adhering, or sealing biological tissue are provided. The methods include combining solutions containing a polymer component and a dendrimer component capable of reacting with each other, and at least one of the components includes a substituent capable of photoreversible dimerization that can be reversibly dimerized. Drug delivery compositions and kits containing these two components also are provided.

Abstract: Methods for treating, adhering, or sealing biological tissue are provided. The methods include combining solutions containing a polymer component and a dendrimer component capable of reacting with each other, and at least one of the components includes a substituent capable of photoreversible dimerization that can be reversibly dimerized. Drug delivery compositions and kits containing these two components also are provided.

Abstract: Hydrogel particles are provided that include a crosslinked polymer and a drug conjugated to the crosslinked polymer. The hydrogel particles may include a pH sensitive moiety and a redox sensitive moiety. The hydrogel particles also may be dispersed in a host hydrogel. Kits and methods of drug delivery and treatment also are provided.

Abstract: Biocompatible adhesive materials, such as for use with biological tissues and/or medical implants, are provided, as well as methods and kits for making and using the biocompatible adhesive materials. The biocompatible adhesive materials include a dendrimer component and a polymer component, and may be tailored for specific tissue types and conditions.

Abstract: Provided herein are methods for treating, adhering, or sealing biological tissue with a material, such as a hydrogel, that may include phyllosilicate nanoplatelets. The phyllosilicate nanoplatelets can have a high aspect ratio, a low aspect ratio, or be a mixture of high aspect ratio and low aspect ratio nanoplatelets. Drug releasing compositions and kits also are provided herein.

Abstract: A method for imaging the erosion of a biomaterial is disclosed. More specifically, the present invention provides a method for imaging a labeled biomaterial so that the erosion of the biomaterial is measured in vivo over a period of time. A biomaterial such as, for example, a hydrogel including polyethylene glycol (PEG) is labeled with a fluorescent or bioluminescent marker. The labeled biomaterial is then employed in the construction of an implanted medical device such as, for example, an endovascular stent. Furthermore, the labeled biomaterial may be utilized to form a drug delivery system that releases a controlled amount of a drug into a local region within a patient. The erosion of the biomaterial is monitored through a noninvasive imaging method.

Abstract: Theranostic nanoprobes are provided for overcoming cancer multidrug resistance, and methods for treating biological tissue, including cancerous tissue. The theranostic nanoprobes may include gold nanoparticles functionalized with DNA-hairpin. The DNA-hairpin may be configured to hybridize to a complementary target, which may silence or lessen the multidrug resistance of cancer cells. The theranostic nanoprobes may be configured to release a chemotherapeutic agent upon hybridization of the DNA-hairpin to a target molecule.