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Human neural stem cells expressing carboxyl esterase target and inhibit tumor growth of lung cancer brain metastases

Abstract

Neural stem cells (NSCs) led to the development of a novel strategy for delivering therapeutic genes to brain tumors. Human NSCs expressing rabbit carboxyl esterase (F3.CE), which activates CPT-11, significantly inhibit the growth of A549 human non-small cell lung adenocarcinoma cells in the presence of CPT-11 in vitro and in vivo. F3.CE cells migrated selectively into the brain metastases located in the opposite hemisphere. The treatment also significantly decreased tumor volume in immune-deficient mice bearing lung cancer when F3.CE cells were transplanted into the contralateral hemisphere. The survival of tumor-bearing animals was significantly prolonged by the treatment with F3.CE and CPT-11. This strategy could be considered as an effective treatment regimen for lung cancer brain metastases.

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Acknowledgements

This study was supported by grants from Korea Healthcare Technology R&D Project (A092255) and R&D Program for Cancer Control, Korean Ministry of Health & Welfare (SUK), Asan Life Science Institute (2008-436), Seoul, Korea (SHH), and Canadian Myelin Research Initiative (SUK).

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Correspondence to S U Kim.

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Hong, S., Lee, H., An, J. et al. Human neural stem cells expressing carboxyl esterase target and inhibit tumor growth of lung cancer brain metastases. Cancer Gene Ther 20, 678–682 (2013). https://doi.org/10.1038/cgt.2013.69

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