Downregulation of extracellular matrix metalloproteinase inducer by scFv-M6-1B9 intrabody suppresses cervical cancer invasion through inhibition of urokinase-type plasminogen activator

• Main Authors: Tipattaraporn Panich, Khajornsak Tragoolpua, Supansa Pata, Chatchai Tayapiwatana, Nutjeera Intasai
• Format: Journal
• Published: 2018
• Subjects: Biochemistry, Genetics and Molecular Biology; Medicine; Pharmacology, Toxicology and Pharmaceutics
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85012237115&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/56801
• Institution: Chiang Mai University

© Mary Ann Liebert, Inc. 2017. Overexpression of extracellular matrix metalloproteinase inducer (EMMPRIN) accelerates tumor invasion and metastasis via activation of matrix metalloproteinases (MMPs) and urokinase-type plasminogen activator (uPA) expression. The authors were interested in whether the scFv-M6-1B9 intrabody against EMMPRIN that retains EMMPRIN in endoplasmic reticulum could be a potential tool to suppress cervical cancer invasion through inhibition of uPA. The chimeric adenoviral vector Ad5/F35-scFv-M6-1B9 was transferred into human cervical carcinoma HeLa cells to produce the scFv-M6-1B9 intrabody against EMMPRIN. Cell surface expression of EMMPRIN, the membrane-bound uPA, the enzymatic activity of secreted uPA, and the invasion ability were analyzed. The scFv-M6-1B9 intrabody successfully diminished the cell surface expression of EMMPRIN and the membrane-bound uPA on HeLa cells. uPA activity from tissue culture media of EMMPRIN-downregulated HeLa cells was decreased. The invasion ability of HeLa cells harboring scFv-M6-1B9 intrabody was also suppressed. These results suggested that the scFv-M6-1B9 intrabody might represent a potential approach for invasive cervical cancer treatment. The application of scFv-M6-1B9 intrabody in animal experiments and preclinical studies would be investigated further.