A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
A61K 39/29 (2006.01) C07K 14/02 (2006.01) G01N 33/569 (2006.01) A61K 39/00 (2006.01)
Patent
CA 2067003
55/JWW25 18347 TITLE OF THE INVENTION HBsAg ESCAPE MUTANT VACCINE ABSTRACT OF THE INVENTION In order to produce serologic variants of hepatitis B virus (HBV) surface proteins in the form of particles with substantially reduced entrapped carbohydrate content, DNA encoding the HBV variant envelope proteins was expressed in a recombinant yeast hosts which are either wild type for, or deficient in their ability to glycosylate proteins. These HBV surface proteins display the variant antigenic sites genetically encoded by the S domain of the HBV virion envelope open reading frame and contain substantially reduced levels of entrapped carbohydrate when compared with HBsAg particles produced in "wild-type" yeast cells. These particles are useful as a vaccine for both the active and passive treatment or prevention of disease and/or infection caused by HBV or other agents serologically related to HBV and as diagnostic reagents and immunogens and antigens for developing diagnostic reagents.
Hagopian Arpi
Kniskern Peter J.
Gowling Lafleur Henderson Llp
Hagopian Arpi
Kniskern Peter J.
Merck & Co. Inc.
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