Patent · US Expired

Preparation of functional human factor VIII in mammalian cells using methotrexate based selection

US4965199A · kind A · utility

265Cited by
14References
13Claims
0Family size

Assignee

Inventors

Key dates

Filing dateAug 7, 1987
Grant dateOct 23, 1990
Priority date
Expiry dateAug 7, 2007

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10S930/10
  • WIPO fieldPharmaceuticals
  • WIPO sectorChemistry

Abstract

A method for producing factor VIII in recombinant mammalian host cells utilizing an expression vector containing a selectable marker DNA and an amplifiable marker DNA. The initial selection is based upon the selectable marker and subsequent amplification of factor VIII DNA and amplifiable marker DNA is conducted in cells not deficient in the amplifiable marker.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.