Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Reexamination Certificate
2006-05-23
2006-05-23
Wehbé, Anne M. (Department: 1632)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
C536S023100, C435S320100, C800S013000, C800S018000
Reexamination Certificate
active
07049426
ABSTRACT:
The present invention provides fully human antibodies in a transgenic animal of a desired isotype in response to immunization with any virtually any desired antigen. The human immunoglobulin heavy chain transgene in the foregoing animals comprises a human constant region gene segment comprising exons encoding the desired heavy chain isotype, operably linked to switch segments from a constant region of a different heavy chain isotype, i.e., a non-cognate switch region. Said additional constant region segment comprises a switch region and human constant region coding segment, wherein the constant region coding segment is operably linked to a switch region that it is not normally associated with, i.e., a non-cognate switch region. In the transgenes of the invention, the non-cognate switch region may be a switch region from a different species than the constant region coding segment. The switch region and membrane exons of the invention may comprise a human gamma-2 constant region and the secreted constant region exons are from a human gamma-1 or a human gamma-4 constant region.
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J.W. Ellison
Davis C. Geoffrey
Green Larry L.
Ivanov Vladimir E.
Abgenix, Inc.
Fish & Neave IP Group Ropes & Gray LLP
Gunnison Jane T.
Pazdera R. Minako
Wehbe Anne M.
LandOfFree
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