Partial synthesis and biological evaluation of bisbenzylisoquinoline alkaloids derivatives: potential modulators of multidrug resistance in cancer
摘要:
A series of new bisbenzylisoquinoline alkaloids was partially synthesized from tetrandrine and fangchinoline and evaluated for their ability to reverse P-glycoprotein-mediated multidrug resistance (MDR) in cancer cells. All the test compounds increased the intracellular accumulation rate of rhodamine 123 in MDR cells (Bel7402 and HCT8), and most exhibited more potent MDR-reversing activity relative to the reference compound verapamil. Compounds 8, 10, 13, and 14 enhanced intracellular accumulation of doxorubicin in Bel7402 and HCT8 cells.
We examined the ability of partially synthesized new compounds from fangchinoline and tetrandrine to reverse P-glycoprotein (P-gp)-dependent multidrug resistance (MDR) in vitro and in vivo. All compound enhanced the in vitro cyctotoxic effect of vinblastin (VBL) at 0.1 μM as potent as 10 μM verapamil against the resistant cell line P388/ADR. The combination effect tended to be strong by substitution of bulky group, resulting 5,14-dibromotetrandrine (compound #9) showed the strongest effect. Compound #9 increased intracellular VBL accumulation in P388/ADR cells, much stronger than verapamil, as well as cytotoxic combined effect. This mechanism seems to inhibit the function of P-gp, but not the expression of P-gp. In combination with VBL, this compound also synergistically prolonged the life-span of P388/ADR-bearing mice. Bisbenzylisoquinoline alkaloids and their derivatives are possible to be good candidates as modifier of MDR in cancer chemotherapy.
Partial synthesis and biological evaluation of bisbenzylisoquinoline alkaloids derivatives: potential modulators of multidrug resistance in cancer
作者:Ping He、Hua Sun、Xi-Xian Jian、Qiao-Hong Chen、Dong-Lin Chen、Geng-Tao Liu、Feng-Peng Wang
DOI:10.1080/10286020.2012.680443
日期:2012.6
A series of new bisbenzylisoquinoline alkaloids was partially synthesized from tetrandrine and fangchinoline and evaluated for their ability to reverse P-glycoprotein-mediated multidrug resistance (MDR) in cancer cells. All the test compounds increased the intracellular accumulation rate of rhodamine 123 in MDR cells (Bel7402 and HCT8), and most exhibited more potent MDR-reversing activity relative to the reference compound verapamil. Compounds 8, 10, 13, and 14 enhanced intracellular accumulation of doxorubicin in Bel7402 and HCT8 cells.
Synthesis and Biological Evaluation of Fangchinoline Derivatives as Anti-Inflammatory Agents through Inactivation of Inflammasome
作者:Ting Liu、Qingxuan Zeng、Xiaoqiang Zhao、Wei Wei、Yinghong Li、Hongbin Deng、Danqing Song
DOI:10.3390/molecules24061154
日期:——
analogues, of which twenty two were novel, were synthesized and evaluated for their effect to inhibit lipopolysaccharide/nigericin (LPS/NIG)-induced IL-1β release at both cell and protein levels at the concentration of 5 μM. Among them, compound 6 exhibited promising inhibitory potency against IL-β activation with an IC50 value of 3.7 μM. Preliminary mechanism study revealed that 6 might target NLRP3 protein