Zhang ZY, Zhang ZM, Pan LJ. Construction of human STIM1 eukaryotic expression vector and its expression in HL-7702 cells.
Shijie Huaren Xiaohua Zazhi 2009;
17:1489-1492. [DOI:
10.11569/wcjd.v17.i15.1489]
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Abstract
AIM: To construct eukaryotic expression vector of human stromal interaction molecular 1 (STIM1) gene and to observe its expression in human liver cell line (HL-7702).
METHODS: Total RNA was extracted from HL-7702 cells and the coding sequence of STIM1 gene was amplified using RT-PCR. After purification, the fragment and eukaryotic expression vector pGM-T plasmid were ligated. The recombinant plasmid was verified by agarose gel electrophoresis and sequencing. Expression of STIM1 gene and growth of transfected HL-7702 cells were evaluated by electrophoresis and Western blot, respectively.
RESULTS: The length of specific fragment amplified by PCR was 342 bp, the recombinant plasmid pGM-T-STIM1 showed two correct bands by digestion using restriction endonuclease EcoR, and sequencing results were as expected, suggesting that STIM1 gene had been cloned into pGM-T vector. Results of agarose gel electrophoresis and Western blot revealed that with the transfection, the expression level of STIM1 gene and protein were all elevated in HL-7702 cells.
CONCLUSION: The recombinant eukaryotic expression vector pGM-T-STIM1 was successfully constructed and stably expressed in HL-7702 cells. It is meaningful for the research of cytoplasm calcium concentration regulation and secretion function in human liver cells.
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