Eukaryotic expression of human arresten gene and its effect on the proliferation of vascular smooth muscle cells.
The eukaryotic expression of human arresten gene and its effect on the proliferation of in vitro cultured vascular smooth cells (VSMCs) in vitro were investigated. COS-7 cells were transfected with recombinant eukaryotic expression plasmid pSecTag2-AT or control plasmid pSecTag2 mediated by liposome. Forty-eight h after transfection, reverse transcription-polymerase chain reaction (RT-PCR) was used to detect the expression of arresten mRNA in the cells, while Western blot assay was applied to detect the expression of arresten protein in concentrated supernatant. Primary VSMCs from thoracic aorta of male Sprague-Dawley rats were cultured using the tissue explant method, and identified by immunohistochemical staining with a smooth muscle-specific anti-alpha-actin monoclonal antibody before serial subcultivation. VSMCs were then co-cultured with the concentrated supernatant and their proliferation was detected using Cell Counting Kit-8 (CCK-8) in vitro. The results showed that RT-PCR revealed that the genome of arresten-transfected cells contained a 449 bp specific fragment of arresten gene, suggesting the successful transfection. Successful protein expression in supernatants was confirmed by Western blot. CCK-8 assay showed that the proliferation of VSMCs were inhibited significantly by arresten protein as compared with control cells (F=40.154, P<0.01). It was concluded that arresten protein expressed in eukaryotic cells can inhibit proliferation of VSMCs effectively in vitro, which would provide possibility to the animal experiments.
Shang
Dan
D
Department of General Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Zheng
Qichang
Q
Song
Zifang
Z
Li
Yiqing
Y
Wang
Xiedan
X
Guo
Xingjun
X
D000818:Animals; D019393:Arrestin / Q000096:biosynthesis / Q000235:genetics / Q000502:physiology*; D015153:Blotting, Western; D019556:COS Cells; D049109:Cell Proliferation; D002478:Cells, Cultured; D002522:Chlorocebus aethiops; D005057:Eukaryotic Cells / Q000378:metabolism*; D015870:Gene Expression; D006801:Humans; D007150:Immunohistochemistry; D009131:Muscle, Smooth, Vascular / Q000166:cytology / Q000378:metabolism*; D010957:Plasmids / Q000235:genetics; D051381:Rats; D017207:Rats, Sprague-Dawley; D011994:Recombinant Proteins / Q000096:biosynthesis / Q000235:genetics; D020133:Reverse Transcriptase Polymerase Chain Reaction; D014162:Transfection
D019393:Arrestin; D011994:Recombinant Proteins