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北京中医药大学 中药学院 中药现代研究中心,北京 100029
杨爱琳,博士,从事中药活性成分抗肿瘤作用研究,E-mail:yangailin0418@163.com
屠鹏飞,教授,从事中药活性成分与新药开发研究,E-mail:pengfeitu@163.com
胡仲冬,研究员,从事中药活性成分抗肿瘤作用研究,E-mail:huzhongdong@126.com; *
收稿日期:2021-09-15,
网络出版日期:2021-11-04,
纸质出版日期:2022-01-05
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杨爱琳,刘亚鑫,黄惠铭等.槐耳清膏对人前列腺癌VCaP细胞增殖的作用[J].中国实验方剂学杂志,2022,28(01):79-84.
YANG Ai-lin,LIU Ya-xin,HUANG Hui-ming,et al.Effect of Aqueous Extract of Trametes robiniophila on Proliferation of Human Prostate Cancer VCaP Cells[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(01):79-84.
杨爱琳,刘亚鑫,黄惠铭等.槐耳清膏对人前列腺癌VCaP细胞增殖的作用[J].中国实验方剂学杂志,2022,28(01):79-84. DOI: 10.13422/j.cnki.syfjx.20220123.
YANG Ai-lin,LIU Ya-xin,HUANG Hui-ming,et al.Effect of Aqueous Extract of Trametes robiniophila on Proliferation of Human Prostate Cancer VCaP Cells[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(01):79-84. DOI: 10.13422/j.cnki.syfjx.20220123.
目的
2
观察槐耳清膏对人前列腺癌VCaP细胞自噬的影响及对核纤层蛋白B
1
(Lamin B
1
)表达的调控作用,并探讨其在VCaP细胞增殖中发挥的作用。
方法
2
采用细胞增殖与活性检测(CCK-8)法检测0,2,4,6,8,10 g·L
-1
槐耳清膏在不同时间下对人前列腺癌VCaP细胞的增殖抑制作用。采用吖啶橙染色法分析槐耳清膏给药对VCaP细胞中自噬溶酶体形成的影响。借助蛋白免疫印迹法(Western blot)检测槐耳清膏给药后细胞中与自噬密切相关的蛋白微管相关蛋白Ⅰ轻链3(LC3),自噬相关蛋白3(Atg3),自噬相关蛋白5(Atg5),自噬相关蛋白7(Atg7)的表达。采用CCK-8法检测槐耳清膏与自噬抑制剂(Bafilomycin A
1
)联合给药及槐耳清膏单独给药对细胞增殖的作用。通过Western blot检测槐耳清膏对人前列腺癌VCaP细胞中Lamin B
1
表达的影响,并采用RNA干扰技术探究Lamin B
1
在槐耳抗人前列腺癌VCaP细胞增殖中的作用。
结果
2
与空白组比较,槐耳清膏能抑制人前列腺癌VCaP细胞的增殖(
P<
0.01),且呈时间与浓度依赖性。槐耳清膏给药后可促进VCaP细胞中自噬溶酶体的生成。与空白组比较,槐耳清膏能上调VCaP细胞中与自噬进程密切相关的蛋白LC3-Ⅱ,Atg3,Atg5,Atg7表达水平(
P
<
0.05),槐耳清膏能够诱导VCaP细胞自噬的发生。进一步研究发现抑制自噬能够降低人前列腺癌VCaP细胞对槐耳清膏的敏感性(
P
<
0.05)。与空白组比较,槐耳清膏给药能够抑制人前列腺癌VCaP细胞中Lamin B
1
蛋白表达(
P
<
0.01),下调Lamin B
1
蛋白表达,在一定程度上也能够减弱VCaP细胞对槐耳清膏的敏感性(
P<
0.01)。
结论
2
自噬活化和Lamin B
1
表达下调可能参与了槐耳清膏对人前列腺癌VCaP细胞的增殖抑制作用,能够为槐耳临床应用提供一定的理论基础。
Objective
2
To investigate effect of aqueous extract of
Trametes robiniophila
(TRM,Huaier) on autophagy of human prostate cancer VCaP cells and Lamin B
1
expression, so as to uncover its role in the proliferation of VCaP cells.
Method
2
The inhibitory effect of 0, 2, 4, 6, 8, 10 g·L
-1
TRM aqueous extract on the proliferation of human prostate cancer VCaP cells at different time points were determined by cell counting kit-8 (CCK-8) assay. Acridine orange staining was conducted for analyzing the effect of TRM aqueous extract on the formation of autolysosomes in VCaP cells. After medication, the expression of microtubule-associated protein Ⅰ light chain 3 (LC3), autophagy-related protein 3 (Atg3), autophagy-related protein 5 (Atg5), and autophagy-related protein 7 (Atg7) in VCaP cells were detected by Western blot. The effect of TRM aqueous extract alone and its combination with autophagy inhibitor bafilomycin A
1
on the proliferation of VCaP cells were assayed by CCK-8 assay. RNA interference technology was used to explore the role of Lamin B
1
in anti-proliferation of VCaP cells by TRM.
Result
2
Compared with the blank group, TRM aqueous extract inhibited the proliferation of human prostate cancer VCaP cells in a time- and concentration-dependent manner (
P<
0.01). Acridine orange staining showed that TRM aqueous extract promoted the formation of autolysosomes in VCaP cells. As revealed by Western blotting, TRM aqueous extract up-regulated the expression levels of LC3-Ⅱ, Atg3, Atg5, and Atg7 in contrast to those in the blank group (
P
<
0.05). All these indicated that TRM aqueous extract induced the autophagy of VCaP cells. In addition, autophagy inhibition impaired the sensitivity of VCaP cells to TRM aqueous extract (
P
<
0.05). The comparison with the blank group showed that TRM aqueous extract inhibited Lamin B
1
protein expression in VCaP cells (
P
<
0.01), which in turns weakened the sensitivity of VCaP cells to TRM aqueous extract.
Conclusion
2
TRM aqueous extract inhibited the proliferation of human prostate cancer VCaP cells possibly by inducing autography and down-regulating Lamin B
1
expression. This study has provided a theoretical basis for the clinical application of TRM.
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