Analysis of Arg834Gln and Va1902Glu Type 2A von Willebrand Disease Mutations. Studies With Recombinant von Willebrand Factor and Correlation With Patient Characteristics

نویسندگان

  • Talma Englender
  • Antonella Lattuada
چکیده

Type 2A von Willebrand disease (vWD), the most common qualitative form of vWD, is characterized by a relative decrease in circulating intermediate and high molecular weight (HMW) multimers. We studied the biosynthesis of recombinant von Willebrand factor (vWF) containing each of two type 2A vWD mutations previously reported by us, Arg834Gln and Va1902Glu. The structure of recombinant Arg834Gln vWF within transfected COS-7 cells and the secretion of HMW multimers were similar to wild type vWF. The normal transport and secretion of Arg834Gln vWF, categorizes it as a group II type 2A mutation. In contrast, the Va190-

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تاریخ انتشار 2002