Transcription Activity of Ectogenic Human Carcinoembryonic Antigen Promoter in Lung Adenocarcinoma Cells A549
- Author:
Weining XIONG
1
;
Huijuan FANG
;
Yongjian XU
;
Shendao XIONG
;
Yong CAO
;
Qingfeng SONG
;
Daxiong ZENG
;
Huilan ZHANG
Author Information
1. 华中科技大学同济医学院附属同济医院
- Keywords:
tissue-specific promoter;
carcinoembryonic antigen;
lung carcinoma
- From:
Journal of Huazhong University of Science and Technology (Medical Sciences)
2006;26(5):517-519
- CountryChina
- Language:Chinese
-
Abstract:
The transcription activity of ectogenic human carcinoembryonic antigen (CEA) promoter in lung adenocarcinoma cells A549 was investigated for the further gene-targeting therapy. The reporter gene green fluorescent protein (GFP) driven by CEA promoter and human cytomegalovirus (CMV) promoter were relatively constructed and named plasmid pCEA-EGFP and pCMV-GFP respectively. The intensity of fluorescence was detected by fluorescence microscope and flow cytometry analysis after the pCEA-GFP and pSNAV-GFP plasmids were transfected into A549 cells through liposome respectively. The results showed (4.08±0.63) % of the A549 cells transfected with pCEA-AFP plasmid expressed, significantly lower than that of the A549 cells transfected with pCMV-GFP [(43.27±3.54) %]. It was suggested that ectogenic human CEA promoter in lung adenocarcinoma cells A549 was weakly expressed. The distinct specificity of CEA promoter in CEA high expression cells was regarded as a tool in selective gene therapy, but the transcription activity of ectogenic human CEA promoter was needed to increase in the future.
