In vivo selection of primitive hematopoietic cells

摘要

The invention is directed to a method of in vivo selection for genetically modified hematopoietic progenitor cells from nonmodified hematopoietic cells in a subject. Ibis goal is accomplished by introducing mutant dihydrofolate reductase genes into hematopoietic progenitor cells and then administering to a subject harboring the resultant transformed cells an antifolate and a nucleoside transport inhibitor. The invention is also directed to nucleic acids encoding mutant dihydrofolate reductase genes and to hematopoietic cells transformed with such mutant genes.