Gene therapy using anticancer drug-resistance genes

Research output: Contribution to journalArticle

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Abstract

Myelosuppression is a major dose-limiting factor in cancer chemotherapy. Introduction of drug-resistance genes into bone marrow cells of cancer patients has been proposed to overcome this limitation. In theory, any gene whose expression protects cells against the toxic effects of chemotherapy should be useful in vivo for this purpose. Among such genes, human multidrug-resistance gene (MDR1) has been studied most extensively for this purpose, and clinical trials of drug-resistance gene therapy have been started in the US for cancer patients who undergo high-dose chemotherapy with autologous hematopoietic stem cell transplantation. In Japan, our clinical protocol of MDR1 gene therapy "A clinical study of drug-resistance gene therapy to improve the efficacy and safety of chemotherapy against breast cancer" has been submitted to the government. To improve the efficacy and safety of this drug-resistance gene therapy, we have constructed a series of MDR1-bicistronic retrovirus vectors using a retrovirus backbone of Harvey murine sarcoma virus and internal ribosome entry site (IRES) from picornavirus to co-express a second gene with the MDR1 gene. MDR1-MGMT bicistronic vectors can be used to protect bone marrow cells of cancer patients from combination chemotherapy with MDR1-related anticancer agents and nitrosoureas. In addition, MDR1-bicistronic retrovirus vectors can be designed to use the MDR1 gene as an in vivo selectable marker to enrich the transduced cells which express therapeutic genes, if disease is curable by the expression of a single-peptide gene in any types of bone marrow cells or peripheral blood cells.

Original languageEnglish
Pages (from-to)115-123
Number of pages9
JournalHuman cell : official journal of Human Cell Research Society
Volume12
Issue number3
Publication statusPublished - 1999 Sep
Externally publishedYes

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Drug Resistance
Genetic Therapy
Genes
Retroviridae
Bone Marrow Cells
Drug Therapy
Harvey murine sarcoma virus
Neoplasms
Picornaviridae
MDR Genes
Safety
Poisons
Hematopoietic Stem Cell Transplantation
Clinical Protocols
Combination Drug Therapy
Antineoplastic Agents
Blood Cells
Japan
Clinical Trials
Breast Neoplasms

ASJC Scopus subject areas

  • Cell Biology
  • Cancer Research

Cite this

Gene therapy using anticancer drug-resistance genes. / Sugimoto, Yoshikazu.

In: Human cell : official journal of Human Cell Research Society, Vol. 12, No. 3, 09.1999, p. 115-123.

Research output: Contribution to journalArticle

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