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Updated: Jun 4, 2026
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Gene Digital Circuits Based on CRISPR-Cas Systems and Anti-CRISPR Proteins
Published on: October 18, 2022
[Construction and expression of eukaryotic expression plasmid pcDNA3.1-smac]
Si-da Qin1, Hong Ren, Xiao-Jun Li
1Oncology Center, First Affiliated Hospital, Xi'an Jiaotong University College of Medicine, Xi' an 710061, China. sida.qin@gmail.com
Summary
We successfully constructed the pcDNA3.1-Smac expression vector and confirmed Smac gene expression in lung adenocarcinoma cells. This study demonstrates Smac
Area of Science:
- Molecular Biology
- Cancer Research
- Gene Expression
Background:
- Smac (Second mitochondria-derived activator of caspases) is a protein involved in apoptosis.
- Lung adenocarcinoma is a prevalent type of non-small cell lung cancer.
Purpose of the Study:
- To construct a eukaryotic expression vector for human Smac.
- To express the Smac gene in A549 lung adenocarcinoma cells.
- To evaluate the effect of Smac expression on cell growth.
Main Methods:
- Human Smac gene amplified via RT-PCR.
- Construction of pcDNA3.1-Smac recombinant plasmid.
- Transfection into A549 cells using liposomes.
- Detection of Smac expression by RT-PCR and Western blot.
- Assessment of cell growth inhibition using MTT assay.
Main Results:
- Successful cloning of the Smac gene and construction of the pcDNA3.1-Smac vector.
- Significant increase in Smac mRNA and protein levels in transfected A549 cells.
- Demonstrated growth inhibition of lung adenocarcinoma cells transfected with pcDNA3.1-Smac.
Conclusions:
- The pcDNA3.1-Smac vector is successfully constructed and expresses Smac in lung adenocarcinoma cells.
- Smac expression effectively inhibits the growth of A549 lung adenocarcinoma cells.
- This provides a basis for Smac's potential role in lung cancer therapy.
