[EN] FC CONTAINING POLYPEPTIDES WITH ALTERED GLYCOSYLATION AND REDUCED EFFECTOR FUNCTION<br/>[FR] POLYPEPTIDES CONTENANT FC AYANT UNE GLYCOSYLATION MODIFIÉE ET UNE FONCTION EFFECTRICE RÉDUITE
申请人:GENZYME CORP
公开号:WO2014043361A1
公开(公告)日:2014-03-20
Provided are binding polypeptides (e.g., antibodies), and drug conjugates thereof, comprising an Fc domain with an altered glycosylation profile and reduced effector function. In particular embodiment, the Fc domain comprises: an asparagine residue at amino acid position 298, according to EU numbering; and a serine or threonine residue at amino acid position 300, according to EU numbering. Also provided are nucleic acids encoding the antigen-binding polypeptides, recombinant expression vectors and host cells for making such antigen-binding polypeptides. Methods of using the antigen-binding polypeptides disclosed herein to treat disease are also provided.
Efficient synthesis of phosphonodepsipeptides derived from norleucine
In the present work, we describe in detail an efficient solution synthesis of norleucine-derived phosphonopeptides mimicking the peptide sequences Nle-Gly(Ala) and Nle-Gly(Ala)-Val. The most efficient strategy involved use of the benzyl group. The synthesis was achieved through BOP-catalysed coupling of the monobenzyl ester of the N-Cbz-protected phosphonate derivative of norleucine with the hydroxyl