title: High-throughput, multiplexed IgG subclassing of antigen-specific antibodies from clinical samples.
abstract: In vivo, the activity of antibodies relies critically on properties of both the variable domain, responsible for antigen recognition, and the constant domain, responsible for innate immune recognition. Here, we describe a flexible, microsphere-based array format for capturing information about both functional ends of disease-specific antibodies from complex, polyclonal clinical serum samples. Using minimal serum, we demonstrate IgG subclass profiling of multiple antibody specificities. We further capture and determine the subclass of epitope-specific antibodies. The data generated in this array provides a profile of the humoral immune response with multi-dimensional metrics regarding properties of both variable and constant IgG domains. Significantly, these properties are assessed simultaneously, and therefore information about the relationship between variable and constant domain characteristics is captured, and can be used to predict functions such as antibody effector activity.
authors.affiliation: Thayer School of Engineering, Dartmouth College, 14 Engineering Dr, Hanover, NH 03755, USA.
authors.forename: Eric P
authors.initials: EP
authors.lastname: Brown
authors.forename: Anna F
authors.initials: AF
authors.lastname: Licht
authors.forename: Anne-Sophie
authors.initials: AS
authors.lastname: Dugast
authors.forename: Ickwon
authors.initials: I
authors.lastname: Choi
authors.forename: Chris
authors.initials: C
authors.lastname: Bailey-Kellogg
authors.forename: Galit
authors.initials: G
authors.lastname: Alter
authors.forename: Margaret E
authors.initials: ME
authors.lastname: Ackerman
mesh_terms: D000818:Animals; D000939:Epitopes; D057166:High-Throughput Screening Assays; D006801:Humans; D056724:Immunity, Humoral; D007127:Immunoglobulin Constant Regions / Q000235:genetics; D007074:Immunoglobulin G / Q000145:classification* / Q000276:immunology; D007135:Immunoglobulin Variable Region / Q000235:genetics; D007159:Immunologic Tests / Q000379:methods; D008863:Microspheres; D040081:Protein Array Analysis; D044967:Serum / Q000276:immunology*
chemical_list: D000939:Epitopes; D007127:Immunoglobulin Constant Regions; D007074:Immunoglobulin G; D007135:Immunoglobulin Variable Region