【摘 要】
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Chemotherapy is one of the curative treatmentmodality for several types of tumors. However, thedosage of antitumor drugs was limited by cytotoxicityof drugs to
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Chemotherapy is one of the curative treatmentmodality for several types of tumors. However, thedosage of antitumor drugs was limited by cytotoxicityof drugs to normal tissues, especially for bone marrow(myelosuppression). Drug resistantce gene (hMDRI,hDHFR etc.) is expressed in many normal tissues. Itsover-expression in tumor cells give rise to the tumorresistant to many drugs. But, if we transfer the drugresistance gene into the normal hematopoietic stemcell (HSC), the expression of the foreign gene may
Drug resistantce gene (hMDRI,hDHFR etc.) is expressed in many times. Chemotherapy is one of the curative treatmentmodality for several types of tumors. However, thedosage of antitumor drugs was limited by cytotoxicityof drugs to normal tissues, especially for bone marrow(myelosuppression). Normal tissues. Itsover-expression in tumor cells give rise to the tumorresistant to many drugs. But, if we transfer the drugresistance gene into the normal hematopoietic stemcell (HSC), the expression of the foreign gene may
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