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Published on: January 17, 2012
[Screening of candidate proteins interacting with Foxp3δ2 by yeast two-hybrid system]
Yu-jin Xu1, Chang-li Jiang, Cun Zhang
1Biotechnology Center, Pharmacy Department, Fourth Military Medical University, Xi'an, China.
Aim:
To screen Foxp3Delta2-interacting proteins by yeast two-hybria.
Methods:
pGBKT7-Foxp3Delta2 bait plasmid was constructed. Its toxicity and transcriptional activation in yeast cell AH109 was tested by observation of phenotypes and color.
Results:
The bait plasmid pGBKT7-Foxp3Delta2 was constructed successfully and there was no self-activation or toxicity in AH109. Forty positive clones were obtained. After sequence comparison and analysis, nine candidate proteins were finally selected for further confirmation.
Conclusion:
Yeast two hybrid system could be used for screening Foxp3Delta2-interacting proteins. These results provide essential clues for further investigation of Foxp3Delta2 function.
Insights
Researchers screened for proteins interacting with Foxp3Delta2 using a yeast two-hybrid system. This method successfully identified nine candidate proteins, offering new insights into Foxp3Delta2
Area of Science:
- Molecular Biology
- Immunology
- Protein-protein Interactions
Background:
- Forkhead box P3 (Foxp3) is a key transcription factor in regulatory T cell (Treg) function.
- Understanding Foxp3 interactions is crucial for dissecting Treg cell biology and immune regulation.
Purpose of the Study:
- To identify novel proteins that interact with a specific variant of Foxp3, termed Foxp3Delta2.
- To establish a foundation for further functional studies of Foxp3Delta2 and its binding partners.
Main Methods:
- Construction of a pGBKT7-Foxp3Delta2 bait plasmid.
- Yeast two-hybrid screening in Saccharomyces cerevisiae (AH109 strain).
- Assessment of bait plasmid toxicity and auto-activation properties.
Main Results:
- Successful construction of the pGBKT7-Foxp3Delta2 bait plasmid without toxicity or auto-activation.
- Identification of forty positive clones from the yeast two-hybrid screen.
- Selection of nine candidate Foxp3Delta2-interacting proteins following sequence analysis for further validation.
Conclusions:
- The yeast two-hybrid system is a viable method for screening Foxp3Delta2-interacting proteins.
- The identified candidate proteins provide critical leads for future research into Foxp3Delta2's biological functions.
