Abstract: Provided are compositions, optionally pharmaceutical compositions, that include a plurality of exosomes generated from stem cells, optionally ESCs and/or iPSCs, that have been modified to express a granulocyte-macrophage colony stimulating factor (GM-CSF) polypeptide, optionally a human GM-CSF polypeptide. Also provided are methods for employing the presently disclosed compositions for preventing and/or inhibiting tumor growth in subjects in need thereof, for preventing and/or inhibiting metastases in subject in need thereof, for inducing anti-tumor immune responses in subjects, and uses of the presently disclosed compositions for prevention and/or treatment of tumors and/or cancers and for the preparation of medicaments for treatment of tumors and/or cancers.

Abstract: Provided are compositions, optionally pharmaceutical compositions, that include a plurality of exosomes generated from stem cells, optionally ESCs and/or iPSCs, that have been modified to express a granulocyte-macrophage colony stimulating factor (GM-CSF) polypeptide, optionally a human GM-CSF polypeptide. Also provided are methods for employing the presently disclosed compositions for preventing and/or inhibiting tumor growth in subjects in need thereof, for preventing and/or inhibiting metastases in subject in need thereof, for inducing anti-tumor immune responses in subjects, and uses of the presently disclosed compositions for prevention and/or treatment of tumors and/or cancers and for the preparation of medicaments for treatment of tumors and/or cancers.

Abstract: Provided are compositions, optionally pharmaceutical compositions, that include a plurality of exosomes generated from stem cells, optionally ESCs and/or iPSCs, that have been modified to express a granulocyte-macrophage colony stimulating factor (GM-CSF) polypeptide, optionally a human GM-CSF polypeptide. Also provided are methods for employing the presently disclosed compositions for preventing and/or inhibiting tumor growth in subjects in need thereof, for preventing and/or inhibiting metastases in subject in need thereof, for inducing anti-tumor immune responses in subjects, and uses of the presently disclosed compositions for prevention and/or treatment of tumors and/or cancers and for the preparation of medicaments for treatment of tumors and/or cancers.

Abstract: This disclosure provides for methods of treating tumors.

Abstract: Provided herein is a method of treating cancer and stimulating anti-tumor immunity in a subject in need thereof, the method including administering to the subject a synergistic, therapeutically effective amount of a PFKFB3 inhibitor, such as PFK-158, in combination with an immune checkpoint inhibitor. Also provided is a method of synergistically increasing activity of an immune checkpoint inhibitor, the method including administering to a subject in need thereof a combination therapy including PFK-158 and the immune checkpoint inhibitor. A pharmaceutical composition including PFK-158, at least one immune checkpoint inhibitor; and at least one pharmaceutically-acceptable carrier is also provided.

Abstract: The invention provides a region of strong secondary structure conservation between the C-terminus domain of the envelope glycoprotein of filoviruses and an immunosuppressive domain found in retroviral envelope glycoproteins. The invention provides filoviral peptides and modified derivatives thereof with strong immunosuppressive bioactivity. The invention further provides methods for treatment of autoimmune disorders by administering the immunosuppressive peptide. The invention also provides methods for the identification of therapeutic agents that modulate the immunosuppressive activity of the peptides. Antibodies against the inventive peptides and the modified derivatives thereof are also provided. Furthermore, the invention provides methods for treatment of filoviral infection by administering compositions comprising the antibodies and/or the therapeutic agents that modulate the immunosuppressive activity of the inventive peptides.

Abstract: The invention provides a region of strong secondary structure conservation between the C-terminus domain of the envelope glycoprotein of filoviruses and an immunosuppressive domain found in retroviral envelope glycoproteins. The invention provides filoviral peptides and modified derivatives thereof with strong immunosuppressive bioactivity. The invention further provides methods for treatment of autoimmune disorders by administering the immunosuppressive peptide. The invention also provides methods for the identification of therapeutic agents that modulate the immunosuppressive activity of the peptides. Antibodies against the inventive peptides and the modified derivatives thereof are also provided. Furthermore, the invention provides methods for treatment of filoviral infection by administering compositions comprising the antibodies and/or the therapeutic agents that modulate the immunosuppressive activity of the inventive peptides.