BACKGROUND Previous studies have shown that the Shi-pi-xiao-ji(SPXJ)herbal decoction formula is effective in suppressing hepatocellular carcinoma(HCC),but the underlying mechanisms are not known.Therefore,this study i...BACKGROUND Previous studies have shown that the Shi-pi-xiao-ji(SPXJ)herbal decoction formula is effective in suppressing hepatocellular carcinoma(HCC),but the underlying mechanisms are not known.Therefore,this study investigated whether the antitumor effects of the SPXJ formula in treating HCC were mediated by acetyl-coA acetyltransferase 1(ACAT1)-regulated cellular stiffness.Through a series of experiments,we concluded that SPXJ inhibits the progression of HCC by upregulating the expression level of ACAT1,lowering the level of cholesterol in the cell membrane,and altering the cellular stiffness,which provides a new idea for the research of traditional Chinese medicine against HCC.AIM To investigate the anti-tumor effects of the SPXJ formula on the malignant progression of HCC.METHODS HCC cells were cultured in vitro with SPXJ-containing serum prepared by injecting SPXJ formula into wild-type mice.The apoptotic rate and proliferative,invasive,and migratory abilities of control and SPXJ-treated HCC cells were compared.Atomic force microscopy was used to determine the cell surface morphology and the Young’s modulus values of the control and SPXJ-treated HCC cells.Plasma membrane cholesterol levels in HCC cells were detected using the Amplex Red cholesterol detection kit.ACAT1 protein levels were estimated using western blotting.RESULTS Compared with the vehicle group,SPXJ serum considerably reduced proliferation of HCC cells,increased stiffness and apoptosis of HCC cells,inhibited migration and invasion of HCC cells,decreased plasma membrane cholesterol levels,and upregulated ACAT1 protein levels.However,treatment of HCC cells with the water-soluble cholesterol promoted proliferation,migration,and invasion of HCC cells as well as decreased cell stiffness and plasma membrane cholesterol levels,but did not alter the apoptotic rate and ACAT1 protein expression levels compared with the vehicle control.CONCLUSION SPXJ formula inhibited proliferation,invasion,and migration of HCC cells by decreasing plasma membrane cholesterol levels and altering cellular stiffness through upregulation of ACAT1 protein expression.展开更多
目的探讨多配体蛋白多糖-1(Syndecan-1,SDC1)在不同胶质瘤细胞株中的表达水平及其沉默对A172细胞的增殖和侵袭的影响。方法通过实时荧光定量PCR(q RT-PCR)和Western Blotting分析SDC1在不同胶质瘤细胞株中的表达水平;将携带SDC1 sh RNA...目的探讨多配体蛋白多糖-1(Syndecan-1,SDC1)在不同胶质瘤细胞株中的表达水平及其沉默对A172细胞的增殖和侵袭的影响。方法通过实时荧光定量PCR(q RT-PCR)和Western Blotting分析SDC1在不同胶质瘤细胞株中的表达水平;将携带SDC1 sh RNA的慢病毒载体感染A172细胞,稳定沉默的细胞株为干扰组,未转染为阴性对照组,转染scramble序列为空白对照组;采用MTT法、台盼蓝拒然法和流式细胞术检测细胞增殖能力,Transwell小室实验检测细胞的迁移和侵袭力;q RT-PCR和Western Blotting检测相关蛋白变化。结果SDC1在不同的胶质瘤细胞株中表达强度不同,差异具有统计学意义(P<0.05)。成功构建稳定沉默SDC1的A172细胞株;与阴性对照组和空白对照组相比,干扰组细胞增殖受到抑制(P<0.05),迁移力(58.40±5.24 vs.255.8±16.09、226.5±22.84,F=126.4,P<0.05)和侵袭力(61.67±16.26 vs.233.70±17.24、244.30±28.15,F=69.87,P<0.05)明显抑制;SDC1、PCNA和MMP-9 m RNA和蛋白表达水平明显降低(P<0.05)。结论沉默SDC1基因的表达可抑制胶质瘤A172细胞的增殖、迁移和侵袭,提示SDC1可能成为胶质瘤生物治疗的新靶点。展开更多
基金Supported by the National Natural Science Foundation of China,No.82074425Hunan Science and Technology Planning Project,No.2016SK2051 and No.2023SK2057the Hunan Provincial Administration of Traditional Chinese Medicine Research Project,No.B2023089.
文摘BACKGROUND Previous studies have shown that the Shi-pi-xiao-ji(SPXJ)herbal decoction formula is effective in suppressing hepatocellular carcinoma(HCC),but the underlying mechanisms are not known.Therefore,this study investigated whether the antitumor effects of the SPXJ formula in treating HCC were mediated by acetyl-coA acetyltransferase 1(ACAT1)-regulated cellular stiffness.Through a series of experiments,we concluded that SPXJ inhibits the progression of HCC by upregulating the expression level of ACAT1,lowering the level of cholesterol in the cell membrane,and altering the cellular stiffness,which provides a new idea for the research of traditional Chinese medicine against HCC.AIM To investigate the anti-tumor effects of the SPXJ formula on the malignant progression of HCC.METHODS HCC cells were cultured in vitro with SPXJ-containing serum prepared by injecting SPXJ formula into wild-type mice.The apoptotic rate and proliferative,invasive,and migratory abilities of control and SPXJ-treated HCC cells were compared.Atomic force microscopy was used to determine the cell surface morphology and the Young’s modulus values of the control and SPXJ-treated HCC cells.Plasma membrane cholesterol levels in HCC cells were detected using the Amplex Red cholesterol detection kit.ACAT1 protein levels were estimated using western blotting.RESULTS Compared with the vehicle group,SPXJ serum considerably reduced proliferation of HCC cells,increased stiffness and apoptosis of HCC cells,inhibited migration and invasion of HCC cells,decreased plasma membrane cholesterol levels,and upregulated ACAT1 protein levels.However,treatment of HCC cells with the water-soluble cholesterol promoted proliferation,migration,and invasion of HCC cells as well as decreased cell stiffness and plasma membrane cholesterol levels,but did not alter the apoptotic rate and ACAT1 protein expression levels compared with the vehicle control.CONCLUSION SPXJ formula inhibited proliferation,invasion,and migration of HCC cells by decreasing plasma membrane cholesterol levels and altering cellular stiffness through upregulation of ACAT1 protein expression.
