姜黄素对人喉癌Hep-2细胞的生长抑制及诱导凋亡作用

目的探讨姜黄素(Curcumin)对人喉癌Hep-2细胞的生长抑制及诱导凋亡作用。方法将Hep-2细胞用含不同浓度姜黄素(3、6、12.5、25μmol/L)的培养基分别培养24和48h,采用MTT法检测其对细胞增殖的影响;台盼蓝染色法检测其对细胞活力的影响;流式细胞术检测其对细胞周期分布及细胞凋亡的影响;DNA琼脂糖凝胶电泳检测其对细胞DNA的影响。结果姜黄素可明显抑制Hep-2细胞增殖,且呈时间-剂量依赖性;可明显降低细胞活力,且呈剂量依赖性;可使细胞阻滞在G2/M期,并诱导细胞出现典型的凋亡峰,凋亡率呈时间-剂量依赖性;能使细胞DNA形成典型的DNA-Ladder。结论姜黄素对人喉癌Hep-2细胞增殖及细胞活力具有显著的抑制作用,并能诱导Hep-2细胞发生凋亡。     

秦巴硒菇提取物FA-2-b-β对伯基特淋巴瘤Raji细胞增殖及凋亡的影响及其作用机制

目的观察秦巴硒菇提取物酸性RNA蛋白复合物FA-2-b-β对伯基特淋巴瘤细胞株Raji增殖及凋亡的影响,并探讨其相关作用机制。方法体外培养Raji细胞,分别加入浓度为0.9、1.5、2.1、2.7 mg/mL的FA-2-b-β,对照组加入等量培养基。培养24、48、72 h后收集各组细胞,采用CCK-8法检测FA-2-b-β对Raji细胞的增殖抑制作用;流式细胞仪检测细胞凋亡率;Western blot法检测细胞β-catenin、c-myc、cyclin D1、Bcl-2、Bax蛋白的表达。结果 FA-2-b-β能抑制Raji细胞增殖,且呈浓度-时间依赖性(P 0.01);给药48 h后,各浓度FA-2-b-β组细胞凋亡率较对照组均显著上升,且呈剂量依赖性(P 0.05);各浓度FA-2-b-β组细胞β-catenin、c-myc、cyclin D1、Bcl-2蛋白的表达水平显著低于对照组,且呈剂量依赖性(P 0.05),Bax蛋白表达水平显著高于对照组,同样呈剂量依赖性(P 0.05),Bax/Bcl-2比值增加。结论 FA-2-b-β呈时间-剂量依赖性诱导伯基特淋巴瘤凋亡,可能与Wnt/β-catenin信号通路相关。     

白藜芦醇对人腺泡横纹肌肉瘤细胞株PLA-802增殖和凋亡的影响及其分子机制

目的观察白藜芦醇(Resveratrol,Res)对人腺泡横纹肌肉瘤(rhabdomyosarcoma,RMS)细胞株PLA-802增殖及凋亡的影响,并探讨其可能的分子机制。方法体外培养PLA-802细胞,用不同浓度的Res(25、50、100、200μmol/L)作用不同时间(24、48、72 h)。MTT法检测Res对PLA-802细胞增殖活力的影响;流式细胞术检测Res对PLA-802细胞周期和凋亡的影响;采用Caspase-3活性检测试剂盒检测Caspase-3酶的活性;Western blot法检测PLA-802细胞中与凋亡密切相关的Bax、Bcl-2、Survivin和Caspase-3酶蛋白的表达水平。结果 Res可明显抑制PLA-802细胞的增殖(P0.05)及提高Caspase-3酶活性(P0.001),且呈剂量-时间依赖性;同时可明显提高处于G0/G1及G2/M期的细胞比例(P0.01),减少S期细胞比例(P0.001),促进PLA-802细胞的凋亡,且可显著增加促凋亡蛋白Bax和Caspase-3的表达水平(P0.05),降低抗凋亡蛋白Bcl-2和Survivin的表达水平(P0.05)。结论 Res可通过上调Bax、Caspase-3及下调Bcl-2和Survivin蛋白的表达水平及激活Caspase-3酶活性,诱导PLA-802细胞的凋亡并抑制其增殖,为治疗RMS提供了实验依据。     

联氨基姜黄素对乳腺癌细胞MCF-7增殖和凋亡的影响及其机制

目的探讨联氨基姜黄素对人乳腺癌细胞MCF-7增殖和凋亡的影响及其机制。方法采用MTT法检测联氨基姜黄素对MCF-7细胞的抗增殖效应,Hochest33258染色观察细胞形态学变化,流式细胞术分析细胞的周期分布和凋亡情况,Western blot检测MCF-7细胞中Bcl-2、Bax、Cyclin D1和Survivin蛋白的表达变化。结果联氨基姜黄素可抑制MCF-7细胞的增殖,IC50为2.56μmol/L,而姜黄素的IC50为21.22μmol/L;联氨基姜黄素染色24 h后,MCF-7细胞出现核荧光强度增强、颗粒状荧光等凋亡特征;凋亡细胞比率明显增加,并可阻滞细胞周期于G1期,且呈一定的剂量依赖性;联氨基姜黄素可使MCF-7细胞中Bcl-2、Cyclin D1、Survivin蛋白表达水平明显降低,而Bax表达增加。结论联氨基姜黄素具有抑制MCF-7细胞增殖、促进凋亡、阻滞细胞周期于G1期的作用,其机制可能与Bcl-2、Bax、Cyclin D1、Survivin蛋白的表达改变有关。     

苏尼替尼对HeLa细胞增殖及3-磷酸甘油醛脱氢酶表达和活性的影响

目的探讨苏尼替尼(Sutent)对HeLa细胞增殖及3-磷酸甘油醛脱氢酶(Glyceraldehyde-3-phosphate dehydro-genase,GAPDH)表达和活性的影响。方法用不同浓度的Sutent作用于HeLa细胞,采用MTT法检测Sutent对HeLa细胞增殖活力的影响;Western blot检测HeLa细胞中GAPDH蛋白表达的变化;GENMED细胞GAPDH活性终点比色法定量检测了GAPDH的活力。结果经Sutent处理24 h后,HeLa细胞的增殖受到明显抑制,且呈浓度依赖性,半数抑制浓度(IC50)为10.283μmol/L;Sutent可明显降低HeLa细胞中GAPDH蛋白的表达量,并能直接抑制GAPDH的活力。结论 Sutent可抑制HeLa细胞的增殖,降低GAPDH蛋白的表达量及活力,显示了其作为多靶点药物的重要研究价值。     

普洱茶提取物对宫颈癌HeLa细胞的诱导凋亡作用

目的探讨普洱茶提取物对人宫颈癌HeLa细胞系的诱导凋亡作用及其分子机制。方法应用不同浓度的普洱茶提取物(15、30、60、120、250、500μg/ml)作用HeLa细胞后,采用MTT法检测其对细胞增殖的影响;DAPI染色法分析细胞凋亡形态学变化;Annexin V-FITC/PI双染流式细胞术检测细胞早期凋亡;Western blot分析pro-caspase-3和pro-caspase-9的变化。结果普洱茶提取物对HeLa细胞的增殖具有明显的抑制作用,且呈浓度依赖性;经普洱茶提取物处理的细胞荧光显微镜下可见典型的凋亡形态学变化,细胞早期凋亡率显著高于未处理的细胞(P<0.05);经普洱茶提取物处理的细胞pro-caspase-3和pro-caspase-9均被活化。结论普洱茶提取物具有可以诱导HeLa细胞凋亡的天然活性成分,且凋亡途径可能依赖于caspase-3、caspase-9相关的线粒体凋亡途径。     

单羰基姜黄素类似物抗肿瘤机制研究

目的在前期单羰基姜黄素类似物合成的基础上,对其进行深入的抗肿瘤机理研究。方法通过碘化丙啶(PI)染色和Caspase-3活性检测姜黄素及姜黄素类似物诱导前列腺癌PC-3细胞凋亡。结果姜黄素类似物C8在诱导细胞凋亡方面较姜黄素及其他姜黄素类似物相比有显著的效果,通过Western blot实验,姜黄素类似物C8与对照组及姜黄素组相比可使Akt和Erk1/2显著减少。结论姜黄素类似物C8能够通过抑制Akt和Erk1/2蛋白表达来抑制前列腺癌的细胞增殖,有望成为有潜力的抗癌新药。     

姜黄素对人髓母细胞瘤DOAY细胞增殖的影响及其机制

目的探讨姜黄素对髓母细胞瘤(medulloblastoma,MB)DAOY细胞增殖的影响及其机制。方法用20、40、60、80、100μmol/L的姜黄素(curcumin)处理DAOY细胞24、48和72 h,采用MTT法检测姜黄素对细胞增殖活性的影响;用30μmol/L姜黄素处理DAOY细胞48 h,设未处理细胞为对照组,免疫细胞化学法检测姜黄素对细胞中β-catenin蛋白表达的影响,Western blot法检测β-catenin及cylinD1蛋白的表达水平。结果不同浓度及作用不同时间姜黄素均可明显抑制DAOY细胞的增殖(P0.05),且在姜黄素浓度≤60μmol/L时,呈时间、剂量依赖性。对照组细胞中,β-catenin蛋白在胞浆和胞核中均有表达,且以胞核为主,经30μmol/L姜黄素处理48 h后,胞核蛋白β-catenin及总蛋白cyclinD1的表达均明显低于对照组(P0.05),胞浆蛋白β-catenin的表达无明显降低(P0.05)。结论姜黄素可通过抑制β-catenin的表达和核转位,阻断Wnt/β-catenin信号通路转导,进而抑制其下游靶基因cyclinD1的表达,从而抑制MB的增殖。     

肿瘤坏死因子α诱导蛋白8对宫颈癌HeLa细胞的作用及其相关机制

目的通过shRNA干扰宫颈癌HeLa细胞中肿瘤坏死因子α诱导蛋白8(tumor necrosis factor alpha induced protein 8,TNFAIP8,TIPE)的表达,分析TIPE对宫颈癌生存的影响。方法转染pCDH-shRNA-TIPE质粒至HeLa细胞株(TIPE干扰组),同时设未转染质粒的空白对照组及空载体转染的阴性对照组,qPCR和Western blot法检测TIPE的表达;加入能诱导细胞凋亡的抗人死亡受体5单链抗体(aDR5ScFv)后,CCK-8法检测细胞增殖,流式细胞术检测细胞凋亡,Western blot法检测TIPE、激活型caspase-3、激活型caspase-8和激活型caspase-9蛋白表达。结果与空白对照组相比,TIPE干扰组细胞mRNA和蛋白表达均显著降低(P 0. 05);加入aDR5ScFv后,TIPE干扰组细胞增殖抑制率和凋亡率与空白对照组和阴性对照组相比显著升高(P 0. 05)。TIPE干扰组细胞激活型caspase-3、caspase-8和caspase-9蛋白的表达显著高于空白对照组和阴性对照组(P 0. 05)。结论 HeLa细胞干扰TIPE表达产生显著调节作用,TIPE的表达降低可对caspase诱导的HeLa细胞凋亡途径产生抑制,对生物治疗新药的进一步研发具有重要意义。     

白芦藜醇对骨肉瘤细胞U-2OS增殖和凋亡的影响及其分子机制

目的观察白芦藜醇(resveratrol,Res)对骨肉瘤细胞U-2OS增殖和凋亡的影响,并探讨其可能的分子机制。方法体外培养人骨肉瘤细胞U-2OS,用不同浓度的Res(5、10、20、40、80μmol/L)作用不同时间(24、48、72 h)后,MTT法检测Res对U-2OS细胞增殖活力的影响;流式细胞术检测Res对细胞周期和凋亡的影响;应用Caspase-3活性检测试剂盒检测Caspase-3酶活性;Western blot检测细胞内Bax、Bcl-2和Caspase 3蛋白的表达水平。结果 Res作用24 h时,与空白对照组及DMSO组比较,20和40μmol/L Res组的细胞增殖抑制率、G0/G1和G2/M期的细胞比例、细胞凋亡率、Caspase-3酶活性显著升高(P0.05),S期细胞比例显著降低(P0.05);20μmol/L Res组U-2OS细胞中Bax和Caspase-3蛋白表达水平显著升高(P0.05),而Bcl-2蛋白表达水平明显降低(P0.05)。结论 Res通过诱导提高Caspase-3酶活性,上调促凋亡基因Bax、Caspase-3及下调抗凋亡基因Bcl-2蛋白的表达水平,从而抑制U-2OS细胞的增殖,促进其凋亡,为Res治疗骨肉瘤提供了实验依据。     

姜黄素对转化生长因子-β1诱导的乳腺癌MDA-MB-231细胞基质金属蛋白酶-9表达及其侵袭能力的影响

目的研究姜黄素对转化生长因子-β1(Transforming growth factor-beta 1,TGF-β1)诱导的人乳腺癌MDA-MB-231细胞基质金属蛋白酶-9(Matrix metallopeptidase-9,MMP-9)表达及其侵袭能力的影响,探讨姜黄素在防治TGF-β1诱导的乳腺癌侵袭转移中可能的作用机制。方法采用CCK-8法检测姜黄素对MDA-MB-231细胞的细胞毒性作用。将MDA-MB-231细胞分为阴性对照组(无血清RPMI1640培养基/DMSO)、TGF-β1处理组(无血清RPMI1640培养基/DMSO+10 ng/ml TGF-β1),姜黄素+TGF-β1处理组(无血清RPMI1640培养基+5、7.5、10μmol/L姜黄素+10 ng/ml TGF-β1)。处理24 h后,采用侵袭小室试验观察细胞的侵袭能力;处理不同时间后,采用Western blot法检测细胞MMP-9、p-Smad2、p-ERK1/2以及p-p38的表达,明胶酶谱法检测各组细胞上清液中MMP-9的活性变化;以ERK特异性抑制剂PD98059、p38特异性抑制剂SB202580、姜黄素和/或TGF-β1处理细胞48 h,采用Western blot和明胶酶谱法检测MMP-9的表达。结果低浓度姜黄素(≤10μmol/L)对MDA-MB-231细胞无明显的细胞毒性作用;姜黄素呈剂量依赖性明显减少了TGF-β1诱导的细胞穿膜数量(P<0.001);姜黄素可显著抑制TGF-β1诱导的MDA-MB-231细胞MMP-9、p-Smad2、p-ERK1/2及p-p38蛋白的表达,且呈浓度、时间依赖性(P<0.05);姜黄素随浓度的增加,对TGF-β1诱导的MDA-MB-231细胞MMP-9活性的抑制作用明显增强(P<0.05);PD98059抑制MMP-9蛋白表达及活性的作用与姜黄素相似,而SB202580对MMP-9无明显影响。结论姜黄素可能通过TGF-β/Smad、TGF-β/ERK信号通路下调TGF-β1诱导的MMP-9的表达及其活性,从而抑制肿瘤的侵袭能力。     

Apoptosis is Induced in Cancer Cells via the Mitochondrial Pathway by the Novel Xylocydine-Derived Compound JRS-15

The novel compound JRS-15 was obtained through the chemical modification of xylocydine. JRS-15 exhibited much stronger cytotoxic and pro-apoptotic activity than its parent compound in various cancer cell lines, with IC₅₀ values in HeLa, HepG2, SK-HEP-1, PC-3M and A549 cells ranging from 12.42 to 28.25 μM. In addition, it is more potent for killing cancer than non-cancerous cells. Mechanistic studies showed that JRS-15 treatment arrested cell cycle at the G1/S phase, which further triggered the translocation of Bax and Bak to the mitochondria, resulting in mitochondrial membrane potential (MMP) depolarization and the subsequent release of cytochrome c and the second mitochondria-derived activator of caspase (Smac). The sequential activation of caspase-9 and caspase-3/7 and the cleavage of poly (ADP-ribose) polymerase (PARP) were observed following these mitochondrial events. Caspase-8, an initiator caspase that is required to activate the membrane receptor-mediated extrinsic apoptosis pathway was not activated in JRS-15-treated cells. Further analysis showed that the levels of the anti-apoptotic proteins Bcl-xL and XIAP were significantly reduced upon JRS-15 treatment. Furthermore, the caspase-9 inhibitor z-LEHD-fmk, the pan-caspase inhibitor z-VAD-fmk, and Bcl-xL or XIAP overexpression all effectively prevented JRS-15-induced apoptosis. Taken together, these results indicate that JRS-15 induces cancer cell apoptosis by regulating multiple apoptosis-related proteins, and this compound may therefore be a good candidate reagent for anticancer therapy.     

Radiation-Sensitising Effects of Antennapedia Proteins (ANTP)-SmacN7 on Tumour Cells

The objective of this study was to investigate the underlying mechanisms behind the radiation-sensitising effects of the antennapedia proteins (ANTP)-smacN7 fusion protein on tumour cells. ANTP-SmacN7 fusion proteins were synthesised, and the ability of this fusion protein to penetrate cells was observed. Effects of radiation on the expression of X-linked inhibitor of apoptosis protein (XIAP) were detected by western blotting. The radiation-sensitising effects of ANTP-SmacN7 fusion proteins were observed by a clonogenic assay. The effects of drugs and radiation on tumour cell apoptosis were determined using Annexin V/FITC double staining. Changes in caspase-8, caspase-9 and caspase-3 were detected by western blot before and after ANTP-SmacN7 inhibition of XIAP. The ANTP-SmacN7 fusion protein could enter and accumulate in cells; in vitro XIAP expression of radiation-induced tumour cells was negatively correlated with tumour radiosensitivity. The ANTP-SmacN7 fusion protein promoted tumour cell apoptosis through the activation of caspase3. ANTP-SmacN7 fusion protein may reduce tumour cell radioresistance by inducing caspase3 activation.     

辛二酰苯胺氧肟酸对人脐静脉内皮细胞增殖及血管形成的影响

目的探讨组蛋白去乙酰化酶抑制剂(Histone deacetylases inhibitor,HDACi)辛二酰苯胺氧肟酸(Suberoy-lanilide hydroxamic acid,SAHA)对人脐静脉内皮细胞(Human umbilical vein endothelial cell,HUVEC)增殖及血管形成能力的影响。方法收集处于对数生长期的HUVEC,以不同浓度的SAHA分别处理24和48 h,另设不加SAHA的对照组,采用CCK-8法检测细胞的增殖活力,并计算增殖抑制率和半数抑制浓度(IC50)。采用流式细胞术检测经15μmol/L SAHA处理48 h的HUVEC凋亡和细胞周期,基质胶体外血管生成试验检测HUVEC的体外成管能力,Western blot法检测HUVEC细胞周期及凋亡相关蛋白的表达水平。结果随着SAHA浓度的增加及作用时间的延长,其对HUVEC增殖的抑制作用增强,SAHA浓度高于80μmol/L时,抑制率增加不明显,24和48 h的IC50值分别为60.53和30.49μmol/L;经15μmol/L SAHA处理48 h,与对照组相比,HUVEC的凋亡率明显增加(P<0.001),S期细胞比例明显升高(P<0.001),G0/G1期比例明显降低(P<0.001),体外成管能力明显下降,P21、caspase-3激活型、caspase-9酶原和激活型蛋白的表达水平均明显升高(P<0.001)。结论 SAHA能够抑制HUVEC增殖及体外血管形成能力,并使P21、caspase-3和caspase-9蛋白水平上调,为肿瘤的治疗提供了一种新的思路。     

Apoptotic Effects of Anthocyanins from Vitis coignetiae Pulliat Are Enhanced by Augmented Enhancer of the Rudimentary Homolog (ERH) in Human Gastric Carcinoma MKN28 Cells

Evidence suggests that augmented expression of a certain gene can influence the efficacy of targeted and conventional chemotherapies. Here, we tested whether the high expression of enhancer of the rudimentary homolog (ERH), which serves as a prognostic factor in some cancers, can influence the efficacy of anthocyanins isolated from fruits of Vitis coignetiae Pulliat, Meoru in Korea (AIMs) on human gastric cancer cells. The anticancer efficacy of AIMs was augmented in ERH-transfected MKN28 cells (E-MKN28 cells). Molecularly, ERH augmented AIM-induced caspase-dependent apoptosis by activating caspase-3 and -9. The ERH-augmented apoptotic effect was related to mitochondrial depolarization and inhibition of antiapoptotic proteins, XIAP, and Bcl-2. In addition, reactive oxygen species (ROS) generation was augmented in AIMs-treated E-MKN28 cells compared to AIMs-treated naïve MKN28 cells. In conclusion, ERH augmented AIM-induced caspase-dependent mitochondrial-related apoptosis in MKN28 cells. A decrease in expression of Bcl-2 and subsequent excessive ROS generation would be the mechanism for ERH-augmented mitochondrial-related apoptosis in AIMs-treated MKN28 cells. A decrease in expression of XIAP would be another mechanism for ERH-augmented caspase-dependent apoptosis in AIMs-treated MKN28 cells.     

Inhibition of Carbonic Anhydrase IX Promotes Apoptosis through Intracellular pH Level Alterations in Cervical Cancer Cells

Carbonic anhydrase IX (CAIX) is a hypoxia-related protein that plays a role in proliferation in solid tumours. However, how CAIX increases proliferation and metastasis in solid tumours is unclear. The objective of this study was to investigate how a synthetic CAIX inhibitor triggers apoptosis in the HeLa cell line. The intracellular effects of CAIX inhibition were determined with AO/EB, AnnexinV-PI, and γ-H2AX staining; measurements of intracellular pH (pHi), reactive oxygen species (ROS), and mitochondrial membrane potential (MMP); and analyses of cell cycle, apoptotic, and autophagic modulator gene expression (Bax, Bcl-2, caspase-3, caspase-8, caspase-9, caspase-12, Beclin, and LC3), caspase protein level (pro-caspase 3 and cleaved caspase-3, -8, -9), cleaved PARP activation, and CAIX protein level. Sulphonamide CAIX inhibitor E showed the lowest IC₅₀ and the highest selectivity index in CAIX-positive HeLa cells. CAIX inhibition changed the morphology of HeLa cells and increased the ratio of apoptotic cells, dramatically disturbing the homeostasis of intracellular pHi, MMP and ROS levels. All these phenomena consequent to CA IX inhibition triggered apoptosis and autophagy in HeLa cells. Taken together, these results further endorse the previous findings that CAIX inhibitors represent an important therapeutic strategy, which is worth pursuing in different cancer types, considering that presently only one sulphonamide inhibitor, SLC-0111, has arrived in Phase Ib/II clinical trials as an antitumour/antimetastatic drug.     

Curcumin Sensitises Cancerous Kidney Cells to TRAIL Induced Apoptosis via Let-7C Mediated Deregulation of Cell Cycle Proteins and Cellular Metabolism

Targeted therapies are the most attractive options in the treatment of different tumours, including kidney cancers. Such therapies have entered a golden era due to advancements in research, breakthroughs in scientific knowledge, and a better understanding of cancer therapy mechanisms, which significantly improve the survival rates and life expectancy of patients. The use of tumour necrosis factor (TNF)-related apoptosis inducing ligand (TRAIL) as an anticancer therapy has attracted the attention of the scientific community and created great excitement due to its selectivity in targeting cancerous cells with no toxic impacts on normal tissues. However, clinical studies disappointingly showed the emergence of resistance against TRAIL. This study aimed to employ curcumin to sensitise TRAIL-resistant kidney cancerous ACHN cells, as well as to gain insight into the molecular mechanisms of TRAIL sensitization. Curcumin deregulated the expression of apoptosis-regulating micro Ribonucleic Acid (miRNAs), most notably, let-7C. Transfecting ACHN cells with a let-7C antagomir significantly increased the expression of several cell cycle protein, namely beta (β)-catenin, cyclin dependent kinase (CDK)1/2/4/6 and cyclin B/D. Further, it overexpressed the expression of the two key glycolysis regulating proteins including hypoxia-inducible factor 1-alpha (HIF-1α) and pyruvate dehydrogenase kinase 1 (PDK1). Curcumin also suppressed the expression of the overexpressed proteins when added to the antagomir transfected cells. Overall, curcumin targeted ACHN cell cycle and cellular metabolism by promoting the differential expression of let-7C. To the best of our knowledge, this is the first study to mechanistically report the cancer chemosensitisation potential of curcumin in kidney cancer cells via induction of let-7C.     

白藜芦醇诱导Raji细胞死亡的自噬途径

目的探讨白藜芦醇对Burkitt B淋巴瘤Raji细胞的增殖抑制作用及诱导死亡途径。方法用白藜芦醇处理Raji细胞,透射电镜及MDC染色检测细胞死亡;Western blot法检测Caspase-3、细胞色素c及CathepsinD蛋白的表达。结果白藜芦醇可明显抑制Raji细胞增殖,电镜观察细胞内出现了大量的自噬小泡,MDC染色后细胞点块状荧光结构明显增加。Western blot分析显示,白藜芦醇可引起细胞色素c从线粒体释放,但释放量与Jurkat细胞相比明显减少,且不能导致Caspase-3的活化。Cathepsin D活性成分32kD片段随白藜芦醇处理时间的延长而减少。结论白藜芦醇可抑制Raji细胞增殖,并通过Caspase非依赖途径诱导细胞自噬死亡。