Abstract: Disclosed is an antibody that specifically binds CD24, or an antigen binding portion thereof. A nucleic acid molecule encoding the antibody or antigen binding portion thereof, an expression vector and a host cell comprising the nucleic acid molecule, a method for expressing the antibody or antigen binding portion thereof, and a method for treating a disease associated with CD24 signaling using the antibody or antigen binding portion thereof are also provided.

Abstract: The present application provides a recombinant fusion protein containing an anti-CD24 antibody or an antibody fragment thereof, with at least one paratope of the anti-CD24 antibody or antibody fragment thereof linked via a linker to an extracellular Ig-like domain of a signal-regulatory protein (SIRP) at N-terminus of a heavy chain or a light chain constituting that paratope, wherein the recombinant fusion protein can bind to CD47, CD24 and FcR simultaneously. The present application also provides a nucleic acid molecule encoding the recombinant fusion protein, an expression vector containing the nucleic acid molecule, a method for producing the recombinant fusion protein and a method for treating a disease associated with over expression of CD47 and/or CD24 using the recombinant fusion protein.

Abstract: The present application provides a recombinant fusion protein containing an anti-PD-L1 antibody or an antibody fragment thereof, with each paratope of the anti-PD-L1 antibody or antibody fragment thereof linked via a linker to an extracellular Ig-like domain of a signal-regulatory protein (SIRP) at N-terminus of a heavy chain variable region or a light chain variable region constituting the paratope, wherein the recombinant fusion protein can bind to CD47, PD-L1 and FcR simultaneously. The present application also provides a nucleic acid molecule encoding the recombinant fusion protein, an expression vector containing the nucleic acid molecule, a method for producing the recombinant fusion protein and a method for treating a disease associated with over-expression of CD47 and/or PD-L1 using the recombinant fusion protein.

Abstract: The present disclosure provides a recombinant fusion protein containing an extracellular Ig-like domain of a signal-regulator protein (SIRP), linked via a linker, to a paratope of an Ig-like anti-HER2 antibody at the N-terminus of a heavy chain or a light chain constituting the paratope. The present disclosure also provides a polynucleotide encoding the recombinant fusion protein, an expression vector containing the polynucleotide, a method for producing the recombinant protein and a method for treating a disease caused by over-expression of CD47 and/or HER2.

Abstract: The present application provides a recombinant fusion protein containing an anti-CD24 antibody or an antibody fragment thereof, with at least one paratope of the anti-CD24 antibody or antibody fragment thereof linked via a linker to an extracellular Ig-like domain of a signal-regulatory protein (SIRP) at N-terminus of a heavy chain or a light chain constituting that paratope, wherein the recombinant fusion protein can bind to CD47, CD24 and FcR simultaneously. The present application also provides a nucleic acid molecule encoding the recombinant fusion protein, an expression vector containing the nucleic acid molecule, a method for producing the recombinant fusion protein and a method for treating a disease associated with over expression of CD47 and/or CD24 using the recombinant fusion protein.

Abstract: The present application provides a recombinant fusion protein containing an anti-CD38 antibody or an antibody fragment thereof, with at least one paratope of the anti-CD38 antibody or antibody fragment thereof linked via a linker to an extracellular Ig-like domain of a signal-regulatory protein (SIRP) at N-terminus of a heavy chain or a light chain constituting that paratope. The present application also provides a nucleic acid molecule encoding the recombinant fusion protein, an expression vector containing the nucleic acid molecule, a method for producing the recombinant fusion protein and a method for treating a disease associated with over expression of CD47 and/or CD38 using the recombinant fusion protein.

Abstract: Disclosed is an antibody that specifically binds CD70, or an antigen binding portion thereof. A nucleic acid molecule encoding the antibody or antigen binding portion thereof, an expression vector and a host cell comprising the nucleic acid molecule, a method for expressing the antibody or antigen binding portion thereof, and a method for treating a disease associated with CD70 signaling using the antibody or antigen binding portion thereof are also provided.

Abstract: Disclosed is an antibody that specifically binds CD24, or an antigen binding portion thereof. A nucleic acid molecule encoding the antibody or antigen binding portion thereof, an expression vector and a host cell comprising the nucleic acid molecule, a method for expressing the antibody or antigen binding portion thereof, and a method for treating a disease associated with CD24 signaling using the antibody or antigen binding portion thereof are also provided.

Abstract: Disclosed is an antibody that specifically binds CD70, or an antigen binding portion thereof. A nucleic acid molecule encoding the antibody or antigen binding portion thereof, an expression vector and a host cell comprising the nucleic acid molecule, a method for expressing the antibody or antigen binding portion thereof, and a method for treating a disease associated with CD70 signaling using the antibody or antigen binding portion thereof are also provided.

Abstract: The present application provides a recombinant fusion protein containing an anti-PD-L1 antibody or an antibody fragment thereof, with each paratope of the anti-PD-L1 antibody or antibody fragment thereof linked via a linker to an extracellular Ig-like domain of a signal-regulatory protein (SIRP) at N-terminus of a heavy chain variable region or a light chain variable region constituting the paratope, wherein the recombinant fusion protein can bind to CD47, PD-L1 and FcR simultaneously. The present application also provides a nucleic acid molecule encoding the recombinant fusion protein, an expression vector containing the nucleic acid molecule, a method for producing the recombinant fusion protein and a method for treating a disease associated with over-expression of CD47 and/or PD-L1 using the recombinant fusion protein.

Abstract: Disclosed is a recombinant protein containing 1) an anti-PD-L1 antibody heavy chain and an anti-PD-L1 antibody light chain, which two are linked by a disulfide bond to bind PD-L1, and 2) an extracellular Ig-like domain of a vascular epithelial growth factor receptor (VEGFR), linked via a linker to the N-terminus or C-terminus of the heavy chain or the light chain, wherein the recombinant protein is capable of binding PD-L1, VEGF and Fc receptor simultaneously. Also disclosed are a recombinant antibody containing two recombinant proteins of the disclosure, a polynucleotide encoding the recombinant protein, an expression vector containing the polynucleotide, a method for producing the recombinant protein and a method for treating a disease caused by over expression of VEGF and/or PD-L1 using the recombinant protein.

Abstract: The present disclosure provides a recombinant fusion protein containing an extracellular Ig-like domain of a signal-regulator protein (SIRP), linked via a linker, to a paratope of an Ig-like anti-HER2 antibody at the N-terminus of a heavy chain or a light chain constituting the paratope. The present disclosure also provides a polynucleotide encoding the recombinant fusion protein, an expression vector containing the polynucleotide, a method for producing the recombinant protein and a method for treating a disease caused by over-expression of CD47 and/or HER2.

Abstract: Provided is a bi-functional fusion protein as well as its preparation method and use. The bi-functional fusion protein is composed of a monoclonal anti-human CD20 antibody linked to a first extracellular domain of human SIRP?. It is shown in in vitro tests that the bi-functional fusion protein is capable of binding to human CD20 and CD47 simultaneously, thus killing CD20+ tumor cells via antibody-dependent cell-mediated cytotoxicity and complement-dependent cytotoxicity, and is also capable of blocking CD47-SIRP? interaction such that macrophages are activated to attack tumor cells. The bi-functional fusion protein has evident anti-tumor activities.

Abstract: Disclosed is a recombinant protein containing 1) an anti-PD-L1 antibody heavy chain and an anti-PD-L1 antibody light chain, which two are linked by a disulfide bond to bind PD-L1, and 2) an extracellular Ig-like domain of a vascular epithelial growth factor receptor (VEGFR), linked via a linker to the N-terminus or C-terminus of the heavy chain or the light chain, wherein the recombinant protein is capable of binding PD-L1, VEGF and Fc receptor simultaneously. Also disclosed are a recombinant antibody containing two recombinant proteins of the disclosure, a polynucleotide encoding the recombinant protein, an expression vector containing the polynucleotide, a method for producing the recombinant protein and a method for treating a disease caused by over expression of VEGF and/or PD-L1 using the recombinant protein.

Abstract: Provided is a bi-functional fusion protein as well as its preparation method and use. The bi-functional fusion protein is composed of a monoclonal anti-human CD20 antibody linked to a first extracellular domain of human SIRP?. It is shown in in vitro tests that the bi-functional fusion protein is capable of binding to human CD20 and CD47 simultaneously, thus killing CD20+ tumor cells via antibody-dependent cell-mediated cytotoxicity and complement-dependent cytotoxicity, and is also capable of blocking CD47-SIRP? interaction such that macrophages are activated to attack tumor cells, The bi-functional fusion protein has evident anti-tumor activities.

Abstract: The present invention provides a recombinant fusion protein containing a first extracellular Ig-like domain of a signal-regulator protein alpha (SIRP?), linked to an Fc fragment of a human IgG1. The present invention also provides a polynucleotide encoding the recombinant fusion protein, an expression vector containing the polynucleotide, a method for producing the recombinant protein and a method for treating a disease caused by over expression of CD47.

Abstract: The present disclosure provides a recombinant fusion protein containing an extracellular Ig-like domain of a signal-regulator protein (SIRP), linked via a linker, to a paratope of an Ig-like anti-HER2 antibody at the N-terminus of a heavy chain or a light chain constituting the paratope. The present disclosure also provides a polynucleotide encoding the recombinant fusion protein, an expression vector containing the polynucleotide, a method for producing the recombinant protein and a method for treating a disease caused by over-expression of CD47 and/or HER2.

Abstract: The present invention provides a recombinant fusion protein containing an anti-PD-L1 antibody, with at least one paratope of the anti-PD-L1 antibody linked via a linker to an extracellular Ig-like domain of a signal-regulator protein (SIRP) at N-terminus of a heavy chain or a light chain, wherein the recombinant fusion protein can bind to CD47, PD-L1 and FcR simultaneously. The present invention also provides a polynucleotide encoding the recombinant fusion protein, an expression vector containing the polynucleotide, a method for producing the recombinant protein and a method for treating a disease caused by over expression of CD47 and/or PD-L1 using the recombinant protein.

Abstract: The present invention provides a recombinant fusion protein containing a first extracellular Ig-like domain of a signal-regulator protein alpha (SIRP?), linked to an Fc fragment of a human IgG1. The present invention also provides a polynucleotide encoding the recombinant fusion protein, an expression vector containing the polynucleotide, a method for producing the recombinant protein and a method for treating a disease caused by over expression of CD47.

Abstract: The present invention provides a recombinant fusion protein containing a first extracellular Ig-like domain of a signal-regulator protein alpha (SIRP?), linked to an Fc fragment of a human IgG1. The present invention also provides a polynucleotide encoding the recombinant fusion protein, an expression vector containing the polynucleotide, a method for producing the recombinant protein and a method for treating a disease caused by over expression of CD47.