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- Title
Functional expression, characterization and application of the human S100A4 protein.
- Authors
DEGANG WANG; JIANWEI ZHANG; ZIQUAN LIU; YUNYUN CHEN; CHUANXIANG XU; ZHIQING ZHANG; XIAOHUA LIU; LEI WU; XUESI ZHOU; XIANGYAN MENG; HUA LI; HONGTAO LIU; ZIFENG JIANG; TIANHUI WANG
- Abstract
Preparations utilizing monoclonal antibodies against S100A4 provide useful tools for functional studies to investigate the clinical applications of the human S100A4 protein. In the present study, human S100A4 protein was expressed in Escherichia coli (E. coli) BL21 (DE3), successfully purified by diethylaminoethyl cellulose anion-exchange chromatography and identified by western blot analysis. Soluble S100A4 bioactivity was confirmed by Transwell migration and invasion assays in the human HeLa cell line. Monoclonal antibodies (mAbs) were generated utilizing the standard hybridoma method and were validated by enzyme-linked immunosorbent assay and western blot analysis. The antibody was then used to examine human gastric carcinoma specimens by immunohistochemistry. Recombinant S100A4 was functionally expressed in E. coli and promoted the migration and invasion of HeLa cells. Four hybridoma cell lines, which secreted mAbs specifically against human S100A4 protein, were obtained. One of the four mAbs, namely 2A12D10B2, recognized human S100A4 as indicated by immunohistochemical staining of human gastric carcinoma specimens and recombinant S100A4 was functionally expressed in E. coli. The mAbs of recombinant S100A4 were suitable for detecting S100A4 expression in human tissues and for investigating the subsequent clinical applications of the protein.
- Subjects
MONOCLONAL antibodies; ESCHERICHIA coli; WESTERN immunoblotting; HELA cells; ENZYME-linked immunosorbent assay; IMMUNOHISTOCHEMISTRY
- Publication
Molecular Medicine Reports, 2015, Vol 11, Issue 1, p175
- ISSN
1791-2997
- Publication type
Article
- DOI
10.3892/mmr.2014.2745