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. 2000 Sep;28(1):31-5.
doi: 10.1002/1526-968x(200009)28:1<31::aid-gene40>3.0.co;2-k.

A new positive/negative selectable marker, puDeltatk, for use in embryonic stem cells

Y T Chen  1 , A Bradley
Affiliations

A new positive/negative selectable marker, puDeltatk, for use in embryonic stem cells

Y T Chen et al. Genesis. 2000 Sep.

Abstract

A novel positive/negative selection cassette, puDeltatk, was generated. pu(Delta)tk is a bifunctional fusion protein between puromycin N-acetyltransferase (Puro) and a truncated version of herpes simplex virus type 1 thymidine kinase (DeltaTk). Murine embryonic stem (ES) cells transfected with pu(Delta)tk become resistant to puromycin and sensitive to 1-(-2-deoxy-2-fluoro-1-beta-D-arabino-furanosyl)-5-iodouracil (FIAU). Unlike other HSV1 tk transgenes, puDeltatk is readily transmitted through the male germ line. Thus pu(Delta)tk is a convenient positive/negative selectable marker that can be widely used in many ES cell applications.

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