Embodiments of the invention concern copolymers and nanoparticles for use as delivery agents for one or more agents for therapy for a medical condition of humans and animals. Some of embodiments of the invention provide new reagents for biomedical research in cell culture, animal models and plants, for example. The copolymers comprise PLGA and PEI and, in some embodiments, also comprise 1-(3-aminopropyl)-4-methylpiperazine (APMP), Fc binding peptide and/or antibody. In certain embodiments, APMP-PLGA-PEI, Fc binding peptide/antibody-PLGA-PEI or Fc binding peptide/antibody-APMP-PLGA-PEI nanoparticles comprising one or more therapeutic agents are delivered to an individual in need thereof or used for biomedical research in cell cultures, animal models and plants.

Metastatic triple negative breast cancer (TNBC) still carries a dismal prognosis with the current treatment paradigms. The effectiveness of drug treatment for many solid tumors such as TNBC is limited by tumor heterogeneity, lack of tumor specificity, off-target toxicities, and transient therapeutic action(s). Strategies that provide tumor-specific, sustained concentrations of drugs to the tumors and tumor receptor-specific binding, while reducing off-target effects are needed to ensure sufficient tumor cell uptake within the primary and metastatic tumor microenvironment. The decreased non-specific adhesivity, receptor-targeted nanoparticle formulations (“DART” nanoparticles) of the invention were assessed for clinical potential in directing biological agents to the cell surface receptor Fn14, which is expressed in many solid cancer types, including TNBC primary tumors and metastatic lesions. They are contemplated for use against solid tumors, particularly brain tumors such as glioblastoma and breast cancer, including metastatic breast cancer.

The present invention relates to polymeric nanoparticles comprising a cytokine or a nucleic acid encoding for a cytokine, pharmaceutical compositions comprising the same, and methods for treating certain diseases comprising administering these polymeric nanoparticles to a subject in need thereof.

Anti-PD-1/PD-L1 antibody conjugated nanoparticles and methods of treating cancer, including without limitation hepatocellular carcinoma, are provided. The conjugates comprise antibodies, e.g. antibody F(ab) fragments, covalently linked to nanopartides. The antibody conjugated nanoparticles provide high tumor-specific delivery by extending circulation time of the antibodies by increasing their geometry and removing the Fc portion, and minimizing off-target distribution and toxicity. In some embodiments the antibody conjugated nanoparticlesprovide for increased therapeutic efficacy, e.g. in decreased tumor growth, relative to unconjugated antibody, or relative to unconjugated F(ab) fragments of an antibody.

Compositions containing populations of nanoparticles that show selective uptake by tissues and other cell types such as lung cells and/or bone marrow cells are described. The nanoparticles show this uptake by virtue of their size and in the absence of a targeting agent on the surface of the nanoparticles, i.e., passive targeting. The population of nanoparticles contain poly(lactic acid-co-glycolic acid), have a diameter between about 70 nm and about 220 nm, and at least 90% of the nanoparticles have a diameter between about 110 nm and about 129 nm. The nanoparticles are manufactured using a microfluidic system. The compositions can be used to treat lung- and/or blood-related genetic disorders in in vivo gene editing technologies.

A cerium oxide nanocomplex, a composition containing the cerium oxide nanocomplex as an active ingredient, and their uses for preventing or treating brain edema are disclosed. The composition can be used as an efficient nanoparticle therapeutic composition by applying a biocompatible polymer composed of an optimal combination to significantly improve the biomedical stability, biocompatibility, and efficiency of the production process of nanoparticles while maintaining the nanoparticles' excellent inhibitory activity against inflammation. In particular, the composition may be used as an effective therapeutic agent that may help patients with severe cerebral infarction recover their neurological function and greatly improve their survival rate by inhibiting secondary inflammatory response and minimizing tissue injury caused by brain edema.

Provided herein are methods and related compositions for administering viral transfer vectors and antigen-presenting cell targeted immunosuppressants.

Provided herein are multi-functional particles. The particles may include poly(lactide-co-glycolide)-g-polyethylenimine (PLGA-g-PEI (PgP)), at least one targeting moiety, at least one therapeutic agent, and/or at least one nucleic acid. Also provided herein are methods of using the multi-functional particles.

A hyperbranched polymer includes a hyperbranched, hydrophobic molecular core, respective low molecular weight polyethyleneimine chains attached to at least three branches of the hyperbranched, hydrophobic molecular core, and respective polyethylene glycol chains attached to at least two other branches of the hyperbranched, hydrophobic molecular core. Examples of the hyperbranched polymer may be used to form hyperbranched polyplexes, and may be included in DNA or RNA delivery systems.

A delivery system for delivering water-soluble components and water-insoluble components of whole-cell components using nano-sized or micro-sized particles, and a use of which in preparing vaccines for preventing and treating cancer. The whole-cell components delivery system consisting of a nano-sized or micron-sized particle and whole-cell components loaded on the particle, the whole-cell components are water-soluble components and water-insoluble components of a whole cell in a cell or tissue. The mutated proteins or peptides produced by cancer in cellular components are loaded on nanoparticles or micronparticles. These immunogenic substances generated by mutations in disease in whole-cell components can be used for cancer prevention and treatment and preparing vaccines for preventing and/or treating cancer.