Process for screening glycoform-specific antibodies

G - Physics – 01 – N

Patent

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Details

G01N 33/76 (2006.01) C07K 14/59 (2006.01) C07K 16/00 (2006.01) C07K 16/26 (2006.01) G01N 33/564 (2006.01)

Patent

CA 2554968

The present invention relates to the use of the assessment of the binding between - antibodies elicited against a first glycoprotein, and - at least one glycoform of a second glycoprotein, said second glycoprotein being itself a glycoform of the first protein, wherein said glycoform of the second glycoprotein is selected from a group of glycoforms of the second glycoprotein, each glycoform of said group corresponding to a determined glycosylation state defined by a determined sialylation state, and/or a determined branching state, and/or a determined fucosylation state, provided that said glycosylation state is not uniquely defined by a substantially unsialylated state, for the screening of glycoform specific antibodies directed against a given glycoform of the second glycoprotein.

La présente invention concerne l'utilisation de l'évaluation de la liaison entre: (a) des anticorps élicités contre une première glycoprotéine, et (b) au moins une glycoforme d'une deuxième glycoprotéine, ladite deuxième glycoprotéine étant elle-même une glycoforme de la première protéine et étant sélectionnée dans un groupe de glycoformes de la deuxième glycoprotéine, chaque glycoforme dudit groupe correspondant à un état de glycosylation déterminé défini par un état de sialylation déterminé et/ou par un état de ramification déterminé et/ou par un état de fucosylation déterminé, à condition que ledit état de glycosylation ne soit pas uniquement défini par un état sensiblement non sialylé, pour le criblage d'anticorps spécifiques contre les glycoformes dirigés contre une glycoforme donnée de la deuxième glycoprotéine.

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