Type of Document Master's Thesis Author Wang, Haizhen URN etd-04212008-155113 Title THE C-PHYCOCYANIN/BETA PROTEIN INHIBITS CANCER CELL PROLIFERATION Degree Master of Science Department Biology Advisory Committee
Advisor Name Title Zhi-Ren Liu Committee Chair Delon W. Barfuss Committee Member Jenny J. Yang Committee Member Keywords
- beta-subunit of C-Phycocyanin
- Apoptosis
- Cell cycle
- Proliferation
- GAPDH
- caspase
- beta-tubulin
Date of Defense 2008-04-14 Availability unrestricted Abstract C-Phycocyanin (C-PC) from blue-green algae has been reported to have various pharmacological characteristics, including anti-inflammatory and anti-cancer activities. In this study, the beta-subunit of C-PC (ref to as C-PC/beta) was expressed and purified from bacteria E. coli BL-21. The recombinant C-PC/beta has been demonstrated to have anticancer properties. Under the treatment of 5 microM of the recombinant C-PC/beta, four different cancer cell lines accrued a high proliferation inhibition and apoptotic induction. The C-PC/beta interacts with membrane-associated beta-tubulin and glyceraldehyde-3-phosphate dehydrogenase (GAPDH) has been found. Under the treatment of the C-PC/beta, depolymerization of microtubulin and actin-filament was observed. The cells underwent apoptosis with increase of Caspase-3 and Caspase-8 activities. Cell cycle was arrested at G0/G1 phase under the treatment of C-PC/beta. In addition, the nuclear level of GAPDH decreased significantly. Inhibition of cancer cell proliferation and induction of apoptosis may potentate C-PC/beta as a promising cancer prevention or therapy agent.Files
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