Provided in the present disclosure are a bifunctional protein which can bind to PD-1 (programmed death receptor-1) and TGF-β (transforming growth factor-β), the medical use of the bifunctional protein, and a preparation method therefor.

A Fc-CD80 fusion protein has a CD80 extracellular domain (ECD) linked to a C-terminal of an immunoglobulin Fc domain. The Fc-CD80 fusion protein can be used for the preparation of a conjugate, the conjugate including the Fc-CD80 fusion protein as a first component, and a second component containing a second effector molecule, the second component being located at an N-terminal of the first component. In addition, a conjugate including the Fc-CD80 fusion protein, a pharmaceutical composition including the Fc-CD80 fusion protein and/or the conjugate are effective for the treatment or prevention of cancerous diseases in individuals.

A pharmaceutical composition for enhancing radiation therapy, containing a fusion protein dimer is disclosed. The fusion protein dimer includes an IL-2 protein and a CD80 protein. A method of radiation therapy for cancer, using the composition is also disclosed. The composition for enhancing radiation therapy may increase the effect of radiation therapy in cancer treatment.

Disclosed herein are ACE2-Fc fusion polypeptides that contain at least one binding site for a spike protein of a coronavirus and methods of using such for therapeutic and/or diagnostic purposes. Also provided herein are methods for producing such fusion polypeptides.

Therapeutic polypeptides, compositions thereof and methods of use thereof for activating NK cells and treating tumors are provided. The therapeutic polypeptides can include a first domain for binding NKG2D and a second domain for binding a tumor target.

Provided herein are engineered IL2 polypeptides and fusion proteins thereof. Also provided are methods of modulating an immune response by administering an engineered IL2 polypeptide or a fusion protein thereof. The engineered IL2 polypeptides and fusion proteins thereof demonstrate increased binding to IL2Rβ, decreased binding to IL2Rα, or both.

A fusion protein including a GDF15 variant having increased physiological activity and in vivo stability, and a pharmaceutical composition containing the same are disclosed. The GDF15 variant or long-acting GDF15 fusion protein is superior to conventional GDF15 variants in terms of in vitro efficacy, binding affinity for GDF15 receptors, and body weight loss effect. Therefore, a pharmaceutical composition containing, as an active ingredient, the GDF15 variant, the long-acting GDF15 fusion protein, or a dimer of the fusion protein, causes appetite suppression, and thus can be effectively used as a therapeutic agent for metabolic diseases or obesity. Furthermore, the pharmaceutical composition can be used in combination therapy or the like with chemical drugs and other therapeutic agents for metabolic diseases, and can be effectively used in combination therapy with conventional therapeutic agents for metabolic diseases or obesity.

The invention provides bispecific fusion proteins that inhibit activation of complement pathway and vascular endothelial growth factor (VEGF) pathway and methods for using these fusion proteins.

Methods are provided for treating a subject with a therapeutic dose of anti-CD47 agent by administering a primer agent prior to administering a therapeutically effective dose of an anti-CD47 agent to the subject.

The present invention is situated in the field of multimers used for targeted therapies. More particularly, the invention relates to methods for preparing multifunctional heteromultimeric protein complexes with a defined ratio of functional components and to multifunctional heteromultimeric protein complexes for directing complement-dependent cytolysis, optionally comprising a scaffold, which display three or more different functional components present in a defined relative ratio, of which one is a tracking component.