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| 1 | Hydroxychavicol,a polyphenol from Piper betle leaf extract,induces cell cycle arrest and apoptosis in TP53-resistant HT-29 colon cancer cells显示文摘This study aims to elucidate the antiproliferative mechanism of hydroxychavicol(HC).Its effects on cell cycle,apoptosis,and the expression of c-Jun N-terminal kinase(JNK)and P38 mitogen-activated protein kinase(MAPK)in HT-29 colon cancer cells were investigated.HC was isolated from Piper betle leaf(PBL)and verified by high-performance liquid chromatography(HPLC),nuclear magnetic resonance(NMR),and gas chromatography-mass spectrometry(GC-MS).The cytotoxic effects of the standard drug 5-fluorouracil(5-FU),PBL water extract,and HC on HT-29 cells were measured after 24,48,and 72 h of treatment.Cell cycle and apoptosis modulation by 5-FU and HC treatments were investigated up to 30 h.Changes in phosphorylated JNK(pJNK)and P38(pP38)MAPK expression were observed up to 18 h.The half maximal inhibitory concentration(IC_(50))values of HC(30μg/mL)and PBL water extract(380μg/mL)were achieved at 24 h,whereas the IC_(50)of 5-FU(50μmol/L)was obtained at 72 h.Cell cycle arrest at the G0/G1 phase in HC-treated cells was observed from12 h onwards.Higher apoptotic cell death in HC-treated cells compared to 5-FU-treated cells(P<0.05)was observed.High expression of pJNK and pP38 MAPK was observed at 12 h in HC-treated cells,but not in 5-FU-treated HT-29 cells(P<0.05).It is concluded that HC induces cell cycle arrest and apoptosis of HT-29 cells,with these actions possibly mediated by JNK and P38 MAPK. | Aiysvariyah RAJEDADRAM Kar Yong PIN Sui Kiong LING See Wan YAN Mee Lee LOOI | 2021 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2021,22,2: | 2 |
| 2 | Chlorella vulgaris triggers apoptosis in hepatocarcinogenesis-induced rats显示文摘小球藻粗俗(CV ) 被报导了有抗氧化剂和反癌症性质。我们在肝在 apoptotic 管理者蛋白质表示上评估了 CV 的效果导致癌症的老鼠。男 Wistar 老鼠(200 ∼250 g ) 被划分成八个组:控制组(正常食谱), CDE 组(在喝与乙基硫氨酸补充的缺乏的饮食浇导致 hepatocarcinogenesis 的胆碱),有 CV ( 50 , 150 ,和 300 mg/kg 身体重量)的三不同剂量的 CV 组,和 CDE 组与 CV 的不同剂量对待( 50 , 150 ,和 300 mg/kg 身体重量)。老鼠在各种各样的星期被牺牲,肝纸巾为免疫组织化学研究在石蜡块被嵌入。在增加剂量, CV 减少了 anti-apoptotic 蛋白质的表示, Bcl-2 ,但是增加了 pro-apoptotic 蛋白质的表示, caspase 8 在 CDE 老鼠,它与减少的 hepatoctyes 增长被相关并且增加了由标记的 bromodeoxy-uridine ( BrdU )和终端 deoxynucleotidyl 转移决定了的 apoptosis 标记的调停的 dUTP 刻痕结束( TUNEL )试金分别地。我们的学习证明 CV 让明确的 chemopreventive 由经由减少导致 apoptosis 完成 Bcl-2 的表示并且增加 caspase 的表示 8 在导致 hepatocarcinogenesis 的老鼠。 | Emey Suhana MOHD AZAMAI Suhaniza SULAIMAN Shafina Hanim MOHD HABIB Mee Lee LOOI Srijit DAS Nor Aini ABDUL HAMID Wan Zurinah WAN NGAH Yasmin Anum MOHD YUSOF | 2009 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2009,10,1: | 1 |
| 3 | 蒌叶提取物增强5-氟尿嘧啶对结肠癌细胞HT29和HCT116的生长抑制作用(英文)显示文摘研究目的:探讨蒌叶(PB)提取物对5-氟尿嘧啶(5-FU)抑制结肠癌细胞HT29和HCT116生长的影响。研究方法:HT29和HCT116细胞分别给予PB、5-FU以及两种药物联合治疗24小时,应用等效线图法分析PB和5-FU的药效学相互作用,Annexin V/PI染色法检测HT29和HCT116细胞的凋亡情况,高效液相色谱法排除PB和5-FU间任何可能的相互化学作用。重要结论:联合PB,低剂量5-FU可以在短时间内起到细胞毒作用,而单独应用PB或5-FU治疗较联合治疗可以诱导更多细胞发生凋亡。进一步采用等效线图法分析显示PB和5-FU的联合作用在抑制结肠癌细胞HT29和HCT116的生长中分别体现出协同和拮抗作用。因此可以认为在HT29细胞中,PB使得较低剂量5-FU发挥最大抑制结肠癌细胞生长效果,然而在HCT116细胞中,PB没有显著降低5-FU的药物浓度,说明PB和5-FU的相互作用不仅仅体现在诱导细胞凋亡方面。 | Pek Leng NG Nor Fadilah RAJAB Sue Mian THEN Yasmin Anum MOHD YUSOF Wan Zurinah WAN NGAH Kar Yong PIN Mee Lee LOOI | 2014 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2014,15,8: | 1 |
| 4 | 槟榔叶水提液对癌细胞的抗迁移作用及其微管靶向性的研究显示文摘本文研究了槟榔(Piperbetle,PB)水提取物对癌细胞转移能力的调节作用及其对微管蛋白结构和网络的影响。采用亚毒剂量对PB和5-氟尿嘧啶(5-FU)处理的癌细胞进行抗迁移研究,观察细胞迁移20小时。在所有处理组中,100μg/m L PB处理的癌细胞均显示出最大的抗迁移作用(P=0.016)。总体上,PB对癌细胞的抗迁移作用高于5-FU。通过细胞形态观察发现,PB处理的细胞表现出与标准微管抑制剂(紫杉醇)相似的细胞特征,并在PB和紫杉醇处理的癌细胞中发现M期细胞群。通过对微管结构和网络进一步研究,我们发现PB和紫杉醇处理的癌细胞表现出长期破坏的纺锤体。因此,我们认为PB具有对癌细胞的抗迁移作用,并可能改变蛋白结构和网络。 | Mee Lee LOOI Alwyn Khai Howe WONG Shelly Anne GNAPRAGASAN Anis Zafirah JAPRI Aiysvariyah RAJEDADRAM Kar Yong PIN | 2020 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2020,21,9: | 0 |