The present disclosure relates to an exosome comprising a photocleavable protein and a use thereof, and the exosome according to the present disclosure contains a fusion protein comprising a blue fluorescent protein (TagBFP), a photocleavable protein (mMaple3), and an exosome-specific marker protein (CD9), and it has been found that when light of 405 nm is irradiated to the exosome, the photocleavable protein, mMaple3 is cleaved and thereby the blue fluorescent protein in the exosome can be delivered into a target cell. In addition, it has been found that Cre protein in the exosome can be delivered into an animal organ, when light of 405 nm is irradiated to an exosome containing Cre fusion protein (Cre-mMaple3-CD9). Therefore, the exosome containing the photocleavable protein according to the present disclosure is expected to be useful in the protein treatment field by safely and efficiently delivering various therapeutic proteins into cells.

Provided are bifunctional molecules that include a first moiety that specifically binds a cell surface molecule, and a second moiety that specifically binds a lysosomal targeting molecule. In certain embodiments, the first moiety is a knottin peptide comprising an engineered loop that binds to the cell surface molecule. The bifunctional molecules find use, e.g., for targeted degradation of cell surface molecules (e.g., proteins) via the endosomal/lysosomal pathway. Also provided are compositions and kits that include the bifunctional molecules, as well as methods of using the bifunctional molecules. Methods of making bifunctional molecules are also provided.

Methods and composition for cell-based therapy as well as somatostatin receptor-based therapy are described. For example, in certain aspects methods for administering an anti-tumor therapy using a signaling defective somatostatin receptor mutant are described. Furthermore, the invention provides compositions and methods involve a somatostatin constitutively active somatostatin receptor mutant.

Provided herein are compositions comprising a DR6 peptide; and methods for treating cancer and/or a tumor, including a platinum drug resistant tumor or cancer, in a patient in need thereof.

The present invention relates to a composition for preventing or treating cancer, the composition containing IL-2 surface expression-extracellular vesicles as an active ingredient. According to the present invention, immune cells, in which useful cytokines have been expressed on the cell surface, and extracellular vesicles, preferably small extracellular vesicles (sEV), which are derived from the immune cells and have useful cytokines expressed on the surface were prepared using a lentiviral vector containing a cytokine-linker-a PDGF receptor transmembrane domain, and it was found that the extracellular vesicles increased proliferation and activity of cytotoxic T cells thereby increasing anti-cancer immune efficacy. Thus, the extracellular vesicles having the efficacy can be usefully utilized as a pharmaceutical composition for preventing or treating cancer, a pharmaceutical composition for co-administration with an anticancer drug, or a composition for delivering a drug or a physiologically active material.

The present invention pertains to an inventive release mechanism for extracellular vesicle (EV)-mediated intracellular and intramembrane delivery of therapeutic polypeptides. More specifically, the invention relates to EVs comprising polypeptide constructs which comprise a therapeutic polypeptide releasably attached to an exosomal polypeptide. Furthermore, the present invention pertains to manufacturing methods, pharmaceutical compositions, medical uses and applications, and various other embodiments related to the inventive EVs.

Provided are methods of treating cancer (e.g., a hematological cancer such as myelodysplastic syndrome) that comprise administering a polypeptide (e.g. a fusion polypeptide) that comprises a SIRPα D1 domain variant and an Fc domain variant in combination with a hypomethylating agent (e.g., azacitidine). Also provided are related kits.

PSMA targeted conjugate compounds, pharmaceutical compositions comprising these compounds, methods for treating and detecting cancers in a subject, methods for identifying cancer cells in a sample are described herein.

The disclosure relates to methods for treating cancer. More particularly, the disclosure relates to use of chimeric non-natural synthetic proteins, in combination with non-tyrosine targeting kinase inhibitors (NTKIs), in treating cancer and preventing intrinsic and/or acquired resistance to NTKIs.

Provided are TCRs (e.g., TCRs that bind to NY-ESO-1), cells and pharmaceutical compositions comprising these TCRs, nucleic acids encoding these TCRs, expression vectors and host cells for making these TCRs, and methods of treating a subject using these TCRs.