The present application discloses a PEGylated asparaginase and use thereof. In this application, the polyethylene glycol (PEG) is coupled to the N-terminal amino of 1 or 2 subunits of L-asparaginase, and the molecular weight of the PEG is 30-40 KDa. The PEG is preferably branched and has an aldehyde serving as an activating group. The PEGylated asparaginase is useful in the preparation of anti-tumor drugs.

This invention relates to methods for reducing or preventing anaphylaxis to non-allergenic antigens with compositions comprising immunosuppressants, and related compositions.

Disclosed is a protein aqueous suspension preparation containing a protein and a polyamino acid, the protein and the polyamino acid having a surface charge in a buffer and forming a complex suspended in the buffer, wherein the absolute value of the difference between pH of the buffer and isoelectric point pI of the protein is in the range of from 0.5 to 4.0. Also disclosed are a method of preparing a protein aqueous suspension preparation and a prefilled syringe containing a concentrated protein aqueous suspension preparation. The protein can exhibit at least one of shaking stress resistance, fluidity enhancement, oxidation resistance, thermal stability, and aggregation inhibitory properties.

Disclosed are compositions and methods that provide pharmacodynamic effects specific to therapeutic macromolecules. The effects may result from reduced doses of therapeutic macromolecules in combination with immunosuppressant doses. The effects may also be enhanced with such compositions.

The disclosure provides compositions comprising peptide-based nanofiber precursors and methods of using the same to inhibit cancerous cell growth and/or to deliver therapeutic or diagnostic agents to cells, e.g., cancerous cells. The compositions of the present technology include peptide-based nanofiber precursors as well as carrier complexes comprising a therapeutic or diagnostic agent, and a peptide-based nanofiber precursor. Also provided herein are methods for delivering a therapeutic or diagnostic agent to a cell comprising contacting the cell with a carrier complex including a therapeutic or diagnostic agent, and a peptide-based nanofiber precursor.

Peptides that specifically bind erythrocytes are described. These are provided as peptidic ligands having sequences that specifically bind, or as antibodies or fragments thereof that provide specific binding, to erythrocytes. The peptides may be prepared as molecular fusions with therapeutic agents, tolerizing antigens, or targeting peptides. Immunotolerance may be created by use of the fusions and choice of an antigen on a substance for which tolerance is desired.

Described herein are methods and compositions for treating cancer. Aspects of the invention relate to administering to a subject having cancer an asparaginase and an agent that inhibits G6PD. Another aspect of the invention relates to administering an asparaginase to a subject having cancer that comprises a G6PD deficiency.

Disclosed are methods and related compositions for concomitantly, locally administering immunosuppressants and doses of therapeutic macromolecules for reducing Type I and Type IV hypersensitivity.

This invention relates to methods that provide immunosuppressants and therapeutic macromolecules that are administered within a pharmacodynamically effective window of the immunosuppressants to induce immune tolerance to the therapeutic macromolecules. The methods allow shifting the immune response in favor of tolerogenic immune response development specific to the therapeutic macromolecule.

Disclosed are dosings of therapeutic macromolecules and immunosuppressants, in some embodiments attached to synthetic nanocarriers, in combination with dosings of therapeutic macromolecules without synthetic nanocarriers, and related methods that provide reduced humoral immune responses.