A nanostructure for lysis of pathogenic bacteria in mammals is provided. The nanostructure includes one or more antimicrobial components loaded into one or more carrier components forming a core portion. The nanostructure also includes one or more bacteriophage receptor binding proteins and/or one or more peptide sequences of the one or more bacteriophage receptor binding proteins attached on the core portion. A method for obtaining such a nanostructure is also provided.

An implantable drug delivery device includes a biodegradable substrate and polymeric nanoparticles containing a therapeutic agent affixed to the biodegradable substrate. A method of preventing or reversing vascular hemodialysis access dysfunction includes wrapping an anastomosis injury site with the implantable drug delivery device. A method of making the implantable drug delivery device includes forming a substrate; forming nanoparticles containing a therapeutic agent by encapsulation and/or from an emulsion; and applying the nanoparticles to the substrate.

Disclosed are synthetic nanocarrier compositions, and related methods, comprising MHC Class II-restricted epitopes and immunosuppressants that provide tolerogenic immune responses, such as a reduction in CD4+ T cell help specific to an antigen.

The present invention provides compositions comprising tolerizing immune modified particles (TIMPs) and methods for using and making said TIMPs. In particular, carrier polymer is covalently conjugated with antigenic peptide before particle formation, which allows for exquisite control of particle size and antigen encapsulation (e.g., for use in eliciting induction of immunological tolerance).

The present invention provides compositions comprising peptide-coupled biodegradable poly(lactide-co-glycolide) (PLG) particles. In particular, PLG particles are surface-functionalized to allow for coupling of peptide molecules to the surface of the particles (e.g., for use in eliciting induction of immunological tolerance).

Disclosed are Somatostatin receptor ligands comprising a peptide moiety, pharmaceutical compositions and uses thereof. Disclosed are also synthetic Somatostatin receptor ligands comprising a cyclic peptide moiety and an active agent moiety covalently bonded to the cyclic peptide moiety through a nitrogen atom of a side chain functional group of an internal residue of the cyclic peptide moiety, pharmaceutical compositions and uses thereof. Disclosed are also synthetic Somatostatin receptor ligands comprising a cyclic peptide moiety and a nanoparticle active agent moiety covalently bonded to the cyclic peptide moiety, pharmaceutical compositions and uses thereof.

This invention provides methods for producing a polymer particle which contains unusually high negative charges on the surface of the particle. Preferably, the polymer is pharmaceutically acceptable. The negative charges can be conferred by chemical groups such as carboxyl, sulfonate, nitrate, fluorate, chloride, iodide, persulfate, and many others, with carboxyl group being preferred. The invention also provides polymer particle produced by the methods of the invention.

Core-shell particles and methods of making and using thereof are described herein. The core is formed of or contains one or more hydrophobic materials or more hydrophobic materials. The shell is formed of or contains hyperbranched polyglycerol (HPG). The HPG coating can be modified to adjust the properties of the particles. Unmodified HPG coatings impart stealth properties to the particles which resist non-specific protein absorption and increase circulation in the blood. The hydroxyl groups on the HPG coating can be chemically modified to form functional groups that react with functional groups and adhere the particles to tissue, cells, or extracellular materials, such as proteins.

Site-specific modification of proteins with microbial transglutaminase (MTG) is a powerful and versatile strategy for a controlled modification of proteins under physiological conditions. We present evidence that solid-phase microbead-immobilization can be used to site-specifically and efficiently attach different functional molecules important for further downstream applications to proteins of therapeutic relevance including scFV, Fab-fragment and antibodies. We demonstrate that MTG remained firmly immobilized with no detectable column bleeding and that enzyme activity was sustained during continuous operation, which allowed for a convenient recycling of the enzyme, thus going beyond solution-phase MTG conjugation. In addition it is showed that immobilized MTG shows enhanced selectivity towards a certain residue in the presence of several reactive residues which are all targeted if the conjugation was carried out in solution. It is also reported on the site-specific lysine conjugation of antibodies using potent glutamine containing peptides with immobilized and MTG in solution. In addition, the generation of dual site-specifically conjugated IgG1 with immobilized and MTG in solution is reported, i.e. site-specific conjugation to glutamine and lysine residues of IgG1 antibody. Site-specific glutamine conjugation with small peptides containing a lysine residue and a functional moiety is also described.

Embodiments of systems, methods, and compositions provided herein relate to hollow beads encapsulating single cells. Some embodiments include performing multiple co-assays on a single cell encapsulated within a hollow bead, including nucleic acid sequencing, preparing nucleic acid libraries, determining methylation status, identifying genomic variants, or protein analysis.