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Effect of Radix Aucklandiae on the resistance of Gefitinib in non-small cell lung cancer |
TONG Yanli1 HUANG Guan2 MEI Qinghua1 YANG Shuiyuan1 |
1.Department of Pharmacy, Guangdong Second Provincial General Hospital, Guangdong Province, Guangzhou 510317, China;
2.School of Pharmaceutical Science, Sun Yat-sen University, Guangdong Province, Guangzhou 510006, China |
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Abstract Objective To observe the effect of Saussurea costus and Indian costus combined with Gefitinib on the model of C. elegans which was resistant to epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKI), and to research the main effective active components. Methods Genotyped anthropogenic (LET-23::hEGFR-TK[T790M- L858R]) C. elegans mutant jgIs25 was used to ensure the effective inhibitory concentration of Saussurea costus and Indian costus. The effective active components were preliminarily determined by HPLC (Hypersil BDS C18 250 mm×4.6 mm, 5 μm, detection wavelength: 220 nm). Results There were significant differences in the vulva expression of C. elegans jgIs25, when the concentration of Indian costus was 100-750 μg/mL and Saussurea costus was 500-750 μg/mL (P < 0.01). It was preliminarily speculated that the active monomers were costunolide and dehydrocostus lactone. Conclusion Radix Aucklandiae combined with Gefitinib can reverse EGFR-TKI resistance in non-small cell lung cancer. It can provide the basis for the follow-up clinical research.
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