摘要:
Disclosed is a novel use of an immunoglobulin Fc fragment, and more particularly, a pharmaceutical composition comprising an immunoglobulin Fc fragment as a carrier. The pharmaceutical composition comprising an immunoglobulin Fc fragment as a carrier remarkably extends the serum half-life of a drug while maintaining the in vivo activity of the drug at relatively high levels. Also, when the drug is a polypeptide drug, the pharmaceutical composition has less risk of inducing immune responses compared to a fusion protein of the immunoglobulin Fc fragment and a target protein, and is thus useful for developing long-acting formulations of various polypeptide drugs.
摘要:
The invention relates to the areas of immunology and vaccine delivery. More specifically, it relates to a bacterial vaccine delivery technology with built-in immunostimulatory properties which allows the immobilization of any antigen of interest, without prior antigen modification. Provided is an antigen binding immunogenic carrier complex comprising at least one bifunctional polypeptide attached to an immunogenic carrier, said bifunctional polypeptide comprising a peptidoglycan binding domain (PBD) through which the polypeptide is attached to said carrier, fused to an antigen binding domain (ABD) capable of binding an antigen of interest. Also provided is a pharmaceutical (e.g. vaccine) composition comprising an antigen-loaded immunogenic carrier complex of the invention.
摘要:
The present invention provides novel, single chain Fc fusion proteins having improved properties. The invention provides single chain fusions of soluble proteins fused to the Fc region of an immunoglobulin via a novel linker comprising a constant region of an immunoglobulin light chain linked to a CH1 constant region of an immunoglobulin heavy chain. This novel linker confers favorable properties on the Fc fusion proteins of the invention such as improved bioactivity and increased half-life as compared to non-Fc fusion counterparts or as compared to prior art Fc fusion proteins. The novel Fc fusion protein scaffold as described herein may be designed to include soluble proteins of interest capable of binding or interacting with any target of interest. Preferably, the Fc fusion protein of the invention is a dimer. The dimer preferably forms via a disulfide bond between free cysteine residues in the hinge region of two monomeric Fc fusion proteins of the invention.
摘要:
In an embodiment of the invention, a composition for treating a cell population comprises an Affinity Medicant Conjugate (AMC). The medicant moiety can be a toxin including an acylfulvene or a drug moiety. The affinity moiety can be an antibody, a binding protein, a steroid, a lipid, a growth factor, a protein, a peptide or non peptidic. The affinity moiety can be covalently bound to the medicant via a linker. Novel linkers that can be directed to cysteine, arginine or lysine residues based on solution pH allow greater flexibility in preserving and/or generating specific epitopes in the AMC.
摘要:
The present invention provides molecules, including proteins, more particularly, immunoglobulins whose in vivo half-lives are altered (increased or decreased) by the presence of an IgG, constant domain, or FcRn binding fragment thereof (e.g., an Fc region or hinge-Fc region) (e.g., from a human IgGI, e.g., human IgGI), that have modifications of one or more of amino acid residues in at least the CH3 domain.
摘要:
In an embodiment of the invention, a composition for treating a cell population comprises an Affinity Medicant Conjugate (AMC). The medicant moiety can be a toxin including an acylfulvene or a drug moiety. The affinity moiety can be an antibody, a binding protein, a steroid, a lipid, a growth factor, a protein, a peptide or non peptidic. The affinity moiety can be covalently bound to the medicant via a linker. Novel linkers that can be directed to cysteine, arginine or lysine residues based on solution pH allow greater flexibility in preserving and/or generating specific epitopes in the AMC.
摘要:
Some embodiments described herein relate to solid-support based processess for the functionalization of immunoglobulins through the use of transglutaminase. Also provided are solid support compositions with bound antibody. The methods can be used, for example, in manufacturing processes or in drug screening.