Related Experiment Videos
[Construction of pcDNA3.1(+)/A2E eukaryotic expression vector and its expression on K562 cell]
Si-Xi Liu1, Jian-Pei Fang, Hong-Gui Xu
1Department of Pediatrics, Shenzhen Children Hospital, Shenzhen, 518026, China.
Zhongguo Shi Yan Xue Ye Xue Za Zhi
|June 24, 2005
Summary
Researchers successfully created a pcDNA3.1(+)/A2E eukaryotic expression vector. This vector enables stable expression of Human Leukocyte Antigen-E (HLA-E) on K562 cells, crucial for studying HLA-E function.
Area of Science:
- Molecular Biology
- Immunology
- Cell Biology
Context:
- Human Leukocyte Antigen-E (HLA-E) plays a critical role in immune regulation, particularly in the interaction between natural killer (NK) cells and target cells.
- Understanding HLA-E expression and function is vital for developing immunotherapies and studying immune evasion mechanisms.
Purpose:
- To construct a stable eukaryotic expression vector, pcDNA3.1(+)/A2E, for expressing HLA-E in human K562 cells.
- To validate the successful construction and functional expression of the pcDNA3.1(+)/A2E vector in a target cell line.
Summary:
- The pcDNA3.1(+)/A2E eukaryotic expression vector was successfully constructed by amplifying A2E cDNA and subcloning it into the pcDNA3.1(+) vector.
- Following transfection into HLA-I negative K562 cells and selection, flow cytometry confirmed successful HLA-E expression (27.76%) on the transfected cells.
- Control K562 cells transfected with an empty pcDNA3.1(+) vector showed no detectable HLA-E expression.
Impact:
- This validated expression system provides a foundation for investigating the molecular mechanisms of HLA-E function.
- It facilitates research into the interactions between HLA-E and NK cell receptors.
- The study enables further exploration of the in vitro effects of HLA-E expression on NK cell activity.