Establishment of high throughput screening model for epidermal growth factor receptor tyrosine kinase inhibitor
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Supported by the Key Program of National Natural Science Foundation of China(30330640),National Natural Science Foundation of China(30170901) and Grant of National Science and Technology R&D Program (2002AA2Z3130).

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    Abstract:

    Objective:To establish a high throughput screening (HTS) model for epidermal growth factor (EGF) receptor tyrosine kinase (RTK) inhibitor. Methods: The bioactive EGFR-RTK was expressed by genetic engineering technology. The binding activity and bioactivity of the compounds were examined by surface plasmon resonance and ELISA. Results: The bioactive EGFR-RTK protein was successfully expressed in the prokaryotic expression system and was immobilized on the sensor chip. The equilibrium constants (Kd) between TKI (EI 188) and RTK was 5.00×10-7 mol·L-1 ,and the IC50 was 12.37 μmol·L-1,which was consistent with expected. With this model we screened 31 compounds and found that 6 compounds had binding activity and inhibitory activity. Conclusion: A novel HTS model of EGFR-TKI has been successfully established using surface plasmon resonance biosensor and ELISA, which lays a foundation for discovery of new TKIs.

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History
  • Received:September 04,2009
  • Revised:November 27,2009
  • Adopted:December 11,2009
  • Online: December 16,2009
  • Published:
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