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Redifferentiation of human hepatoma cells (SMMC-7721) induced by two new highly oxygenated bisabolane-type sesquiterpenes

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Abstract

Bisabolane-type sesquiterpenes are a class of biologically active compounds that has antitumour, antifungal, antibacterial, antioxidant and antivenom properties. We investigated the effect of two new highly oxygenated bisabolane-type sesquiterpenes (HOBS) isolated from Cremanthodium discoideum (C. discoideum) on tumour cells. Our results showed that HOBS induced morphological differentiation and reduced microvilli formation on the cell surface in SMMC-7721 cells. Flow cytometry analysis demonstrated that HOBS could induce cell-cycle arrest in the G1 phase. Moreover, HOBS was able to increase tyrosine-α-ketoglutarate transaminase activity, decrease α foetoprotein level and γ-glutamyl transferase activity. In addition, we found that HOBS inhibited the anchorageindependent growth of SMMC-7721 cells in a dose-dependent manner. Taken together, all the above observations indicate that HOBS might be able to normalize malignant SMMC-7721 cells by inhibiting cell proliferation and inducing redifferentiation.

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Abbreviations

AFP:

α-foetoprotein

DMSO:

dimethysulphoxide

ELISA:

enzyme-linked immunosorbent assay

FBS:

foetal bovine serum

γ-GT:

γ-glutamyl transferase

HOBS:

highly oxygenated bisabolane-type sesquiterpenes

PBS:

phosphate buffered saline

PI:

propidium iodide

TAT:

tyrosine-α-ketoglutarate transaminase

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Correspondence to **bo Yang or Qin Wang.

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Miao, R., Wei, J., Zhang, Q. et al. Redifferentiation of human hepatoma cells (SMMC-7721) induced by two new highly oxygenated bisabolane-type sesquiterpenes. J. Biosci. 33, 723–730 (2008). https://doi.org/10.1007/s12038-008-0092-x

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  • DOI: https://doi.org/10.1007/s12038-008-0092-x

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