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1.广州中医药大学第二附属医院省部共建中医湿证重点实验室,广州 510006
2.广州中医药大学第二临床医学院,广州 510006
3.广东省中医证候临床研究重点实验室,广州 510006
韩明慧,Email:h13544555760@163.com,研究方向:中药多糖药理活性研究。
赵瑞芝,Email:13610241754@163.com。
收稿:2024-04-17,
修回:2024-05-17,
录用:2024-05-29,
纸质出版:2025-03-28
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韩明慧,王小双,赵亚,等.醋柴胡多糖联用奥沙利铂增效活性及机制研究[J].重庆医科大学学报,2025,50(3):303-310.
Han Minghui,Wang Xiaoshuang,Zhao Ya,et al.Synergistic activity and mechanism of vinegar baked radix bupleurum polysaccharides in combination with oxaliplatin[J].Journal of Chongqing Medical University,2025,50(3):303-310.
韩明慧,王小双,赵亚,等.醋柴胡多糖联用奥沙利铂增效活性及机制研究[J].重庆医科大学学报,2025,50(3):303-310. DOI: 10.13406/j.cnki.cyxb.003745.
Han Minghui,Wang Xiaoshuang,Zhao Ya,et al.Synergistic activity and mechanism of vinegar baked radix bupleurum polysaccharides in combination with oxaliplatin[J].Journal of Chongqing Medical University,2025,50(3):303-310. DOI: 10.13406/j.cnki.cyxb.003745.
目的
2
探讨醋柴胡多糖联用奥沙利铂(oxaliplatin,OXA)增效活性及机制,为临床治疗原发肝细胞癌提供新的思路。
方法
2
噻唑蓝(methyl thiazolyl tetrazolium,MTT)法检测醋制柴胡多糖3-4(vinegar baked radix bupleurum polysaccharides 3-4,VBCP 3-4)、醋制柴胡多糖3-3(vinegar baked radix bupleurum polysaccharides 3-3,VBCP 3-3)联用OXA对Huh7细胞的细胞杀伤作用;电感耦合等离子体质谱(inductively coupled plasma mass spectrometry,ICP-MS)检测Huh7细胞对OXA的摄取率,评价醋柴胡多糖VBCP 3-4联用OXA的体外增效途径;蛋白印迹法测定Huh7相关转运蛋白的表达,探讨VBCP 3-4联用OXA的增效机制。
结果
2
VBCP 3-4、VBCP 3-3能够增加OXA对细胞的生长抑制作用。VBCP 3-4能够促进Huh7细胞对OXA的摄取,摄取率在4 h达到峰值,高、低剂量联用组增加摄取率为:分别43.43%(
P
=0.000)和29.02%(
P
=0.000)。OXA低、高剂量组单独作用Huh7细胞,能够促进细胞多药耐药相关蛋白(multidrug resistance-associated protein,MRP)2和MRP1蛋白表达,MRP2蛋白的上调幅度为18.11%、25.00%(
P
=0.008、
P
=0.001),MRP1蛋白的上调幅度为28.51%(
P
>
0.05)、39.70%(
P
=0.015)。VBCP 3-4联用OXA后,MRP2、MRP1及乳腺癌耐药蛋白(breast cancer resistance protein,BCRP)蛋白表达受到抑制,联用高、低剂量组MRP2降低幅度分别为47.38%、15.18%(
P
=0.000、
P
=0.049),MRP1蛋白降低幅度分别为64.96%、34.63%(
P
=0.000、
P
=0.000),联用高剂量组BCRP蛋白表达降低幅度为29.00%(
P
=0.020);VBCP 3-4单独作用Huh7细胞后,能够明显降低MRP2、MRP1及BCRP蛋白表达,VBCP 3-4高剂量组下调MRP2、MRP1幅度为24.91%、20.79%(
P
=0.004、
P
=0.005)。VBCP3-4下调BCRP蛋白的表达,高、中剂量下调幅度分别为15.02%、13.92%(
P
=0.003、
P
=0.030)。
结论
2
醋柴胡多糖VBCP3-4通过抑制外排型转运蛋白MRP1、MRP2、BCRP表达,促进Huh7细胞摄入OXA,提高胞内有效浓度实现增效作用。
Objective
2
To investigate the synergistic activity and mechanism of vinegar baked radix bupleurum polysaccharides(VBCP) in combination with oxaliplatin(OXA),and to provide new ideas for the clinical treatment of primary hepatocellular carcinoma.
Methods
2
MTT assay was used to detect the cytotoxic effect of VBCP 3-4 and VBCP 3-3 in combination with OXA on Huh7 cells;ICP-MS was used to measure the uptake rate of OXA by Huh7 cells and evaluate the
in vitro
synergistic pathway of VBCP 3-4 in combination with OXA; Western blotting was used to measure the expression levels of related transporter proteins in Huh7 cells and explore the synergistic mechanism of VBCP 3-4 in combination with OXA.
Results
2
VBCP 3-4 and VBCP 3-3 enhanced the inhibitory effect of OXA on the growth of cells. VBCP 3-4 promoted the uptake of OXA by Huh7 cells,with the peak uptake rate at 4 hours,and the uptake rate was increased to 43.43% in the high-dose combination group(
P
=0.000) and 29.02% in the low-dose combination group(
P
=0.000). Acting on Huh7 cells,the low- and high-dose OXA alone could promote the protein expression levels of MRP2 and MRP1 in Huh7 cells,and the protein expression level of multidrug resistance-associated protein(MRP) 2 was upregulated to 18.11% and 25.00%,respectively(
P
=0.008,
P
=0.001),while that of MRP1 was upregulated to 28.51%(
P
>
0.05) and 39.70%(
P
=0.015),respectively. After the combination of VBCP 3-4 and OXA,the protein expression of MRP2,MRP1,and breast cancer resistance protein(BCRP) was inhibited; MRP2 was reduced by 47.38% in the high-dose combination group(
P
=0.000) and 15.18% in the low-dose combination group(
P
=0.049);MRP1 was reduced by 64.96% in the high-dose combination group(
P
=0.000) and 34.63% in the low-dose combination group(
P
=0.000); BCRP was reduced by 29.00%(
P
=0.020) in the high-dose combination group. Acting on Huh7 cells alone,VBCP 3-4 significantly reduced the protein expression levels of MRP2,MRP1,
and BCRP,and in the high-dose VBCP 3-4 group,MRP2 and MRP1 were reduced by 24.91% and 20.79%,respectively(
P
=0.004,
P
=0.005). VBCP 3-4 downregulated the protein expression level of BCRP by 15.02% in the high-dose group(
P
=0.003) and 13.92% in the middle-dose group(
P
=0.030).
Conclusion
2
VBCP 3-4 exerts a synergistic effect by inhibiting the expression of the efflux transporter proteins MRP1,MRP2,and BCRP,promoting the intake of OXA by Huh7 cells,and increasing the intracellular effective concentration.
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