Fusion protein with immunosuppressive activity

Abstract

The present invention provides a compound comprising a fusion polypeptide of formula (I): R1-L-R2-Fc wherein R1, which is at the N-terminal end of the polypeptide, is PD-L2 or a PD1-binding fragment thereof, L is a peptide linker, R2 is CTLA-4 or a CD80/CD86-binding fragment thereof, and Fc, which is at the C-terminal end of the polypeptide, is an immunoglobulin Fc domain. The present invention also provides a dimer of the compound, a polynucleotide which encodes the polypeptide, a vector comprising the polynucleotide, a host cell which contains the polynucleotide, a composition and a kit comprising the compound. The invention also provides the compound or the dimer for use in therapy, diagnosis and prognosis, in particular for the treatment of autoimmune diseases or transplant rejection.

Dependencies are inferred from the claim text.