Osteopontin—A Master Regulator of Epithelial-Mesenchymal Transition
AbstractOsteopontin (OPN) plays an important functional role in both physiologic and pathologic states. OPN is implicated in the progression of fibrosis, cancer, and metastatic disease in several organ systems. The epithelial-mesenchymal transition (EMT), first described in embryology, is increasingly being recognized as a significant contributor to fibrotic phenotypes and tumor progression. Several well-established transcription factors regulate EMT and are conserved across tissue types and organ systems, including TWIST, zinc finger E-box-binding homeobox (ZEB), and SNAIL-family members. Recent literature points to an important relationship between OPN and EMT, implicating OPN as a key regulatory component of EMT programs. In this review, OPN’s interplay with traditional EMT activators, both directly and indirectly, will be discussed. Also, OPN’s ability to restructure the tissue and tumor microenvironment to indirectly modify EMT will be reviewed. Together, these diverse pathways demonstrate that OPN is able to modulate EMT and provide new targets for directing therapeutics. View Full-Text
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Kothari, A.N.; Arffa, M.L.; Chang, V.; Blackwell, R.H.; Syn, W.-K.; Zhang, J.; Mi, Z.; Kuo, P.C. Osteopontin—A Master Regulator of Epithelial-Mesenchymal Transition. J. Clin. Med. 2016, 5, 39.
Kothari AN, Arffa ML, Chang V, Blackwell RH, Syn W-K, Zhang J, Mi Z, Kuo PC. Osteopontin—A Master Regulator of Epithelial-Mesenchymal Transition. Journal of Clinical Medicine. 2016; 5(4):39.Chicago/Turabian Style
Kothari, Anai N.; Arffa, Matthew L.; Chang, Victor; Blackwell, Robert H.; Syn, Wing-Kin; Zhang, Jiwang; Mi, Zhiyong; Kuo, Paul C. 2016. "Osteopontin—A Master Regulator of Epithelial-Mesenchymal Transition." J. Clin. Med. 5, no. 4: 39.
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