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Abstract
This study was aimed to explore the inhibitory effect of pumpkin protein (cucurmosin, CUS) on proliferation of RPMI8226 myeloma cells in vitro and its mechanism. Western blot was used to detect the expression level of Notch-1, Jagged-2, P-Akt and NF-KB in the myeloma cells treated by different concentrations of CUS. The results demonstrated that CUS could down-regulate the protein expression levels of Notch1, Jagged-2, P-Akt and NF-KB in the myeloma cells and with time-and concentration-dependent way, at the same time CUS could also decrease the expressions of BCL-2 and P-Akt. It is concluded that CUS can obviously inhibit the RPMI8226 cell proliferation in vitro, down-regulate the expression levels of Notch signal and its down-stream target genes. Therefore, Notch signaling pathway can be used as a new treatment target for multiple myeloma, and CUS may be become a potential new drug for regulating Notch signaling pathway.
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