Abstract
Development of antitumor preparations with low toxicity and high selectivity of action is one of the top priorities of cancer gene therapy. Mesenchymal stem cells possess natural tropism towards tumors, a property that makes possible their use as a vehicle for targeted delivery of therapeutic genes into tumors of various etiologies. At present, genes encoding enzymes (cytosine deaminase, thymidine kinase, carboxyl esterase), cytokines (IL-2, IL-4, IL-12, IFN-beta) and apoptosis inducing factors (TRAIL) are used as therapeutic genes. Mesenchymal stem cells, as demonstrated using experimental models of tumors of various etiologies as well as animals with metastases in brain and lungs, are able to successfully deliver therapeutic genes into tumors and produce significant antitumor effect. However, to effectively use this therapeutic strategy in clinic, one still has to solve a number of technical problems.
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