Up-regulation of Lewis enzyme (Fuc-TIII) and plasma-type alpha1,3fucosyltransferase (Fuc-TVI) expression determines the augmented expression of sialyl Lewis x antigen in non-small cell lung cancer

Construction of human FUT3 eukaryotic expression vector and its expression in human breast adenocarcinoma cells

AIM: To construct the human FUT3 (α 1, 3-fucosyltransferase) eukaryotic expression vector and analyze its expression in human breast adenocarcinoma MDA-MB-231 cells.

METHODS: The full-length FUT3 cDNA was obtained by reverse transcription-polymerase chain reaction (RT-PCR) and cloned into pMD18-T simple vector for sequence analysis. Then the FUT3 gene was subcloned into pEGFP-C1 plasmid. The resulting recombinant vector pEGFP-C1-FUT3 was identified by digestion with restriction endonucleases and transfected into MDA-MB-231 cells. A stably transfected cell line was established using G418 selection. The expression of FUT3 was observed under a fluorescence microscope and examined by semi-quantitative RT-PCR.

RESULTS: The full-length human FUT3 cDNA was successfully obtained, and the recombinant plasmid pEGFP-C1-FUT3 was successfully constructed. After transfection into MDA-MB-231 cells, green fluorescence (green fluorescent protein) was observed. Semi-quantitative RT-PCR analysis showed that FUT3 was highly expressed in MDA-MB-231 cells.

CONCLUSION: The FUT3 eukaryotic expression vector pEGFP-C1-FUT3 that can express FUT3 in MDA-MB-231 cells is constructed successfully and can be used to study the biological functions of the FUT3 gene.