Immunoglobulin fc libraries
AssigneeResearch Development Foundation
InventorsGeorge GEORGIOU, Sang Taek JUNG
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Abstract
Methods and composition for the screening and isolation of aglycosylated antibody Fc domain polypeptides. For example, in certain aspects methods for identifying aglycosylated Fc domains that bind to Fc receptors or preferentially bind to particular Fc receptors are described. Furthermore, the invention provides aglycosylated Fc domains that bind to Fc receptors with high affinity. Enhanced methods and media for prokaryotic based interaction screening are also provided.
Claims41
A method of selecting a bacterial cell comprising an aglycosylated antibody Fc domain having specific affinity for an Fc receptor (FcR) polypeptide comprising the steps of:
- a) obtaining a population of Gram negative bacterial cells, cells of which population express an aglycosylated antibody Fc domain in their periplasm, wherein the population expresses a plurality of different Fc domains;
- b) contacting the bacterial cells with an FcR polypeptide under conditions wherein the FcR polypeptide contacts the aglycosylated Fc domains;
- and
- c) selecting at least one bacterial cell based on binding of the aglycosylated Fc domain to the FcR polypeptide.
-69. (canceled)
Dependencies are inferred from the claim text.