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- FIGURE 45.3-5C. Transfer of therapeutic molecules to normal and
- leukemic cells using safety-modified retroviruses. The therapeutic
- molecule, a stretch of antisense mRNA homologous to a functional
- region of the bcr-abl-encoded mRNA of CML cells, is embedded in the
- 3'-untranslated region of the multidrug chemotherapy-resistant cDNA.
- All cells without the virus are killed by chemotherapy. The normal
- cells transduced by the virus are protected from chemotherapy.
- Although the transduced leukemia cells can acquire drug resistance,
- they are suppressed by the antisense ribozyme sequence.
-