Related Experiment Videos
Identification and Characterization of Strychnine-Binding Peptides Using Phage-Display Screening
Fang Zhang1, Min Wang2, Zheng Qiu2
1Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing. China.
Protein and Peptide Letters
|April 11, 2017
Summary
This study developed a new phage display method to identify cellular targets for insoluble drugs like Strychnine. This approach enables drug discovery by revealing specific binding peptides.
Area of Science:
- Drug discovery and development
- Chemical biology
- Molecular interactions
Background:
- Phage display is a key method for identifying drug targets in drug development.
- Insoluble small chemicals pose challenges for traditional phage display due to presentation difficulties.
Purpose of the Study:
- To develop an alternative in vitro biopanning strategy for insoluble compounds.
- To identify cellular selective binding peptides for Strychnine (Stry) as a model compound.
Main Methods:
- Utilized a phage library displaying random fifteen-peptide sequences.
- Screened for interactions between Strychnine and binding peptides through four rounds of biopanning.
- Evaluated binding affinity using proliferation and diffusion assays, followed by surface plasmon resonance imaging (SPRi).
Main Results:
- Identified eleven positive binding clones out of 100 selected.
- Synthesized peptides corresponding to positive clones.
- Confirmed binding activities of synthesized peptides using SPRi.
Conclusions:
- Developed a feasible scheme for confirming interactions between chemical compounds and cellular binding peptides.
- This method advances the understanding of drug mechanisms, particularly for insoluble compounds.