Delivery and cytotoxicity of RS-1541 in St-4 human gastric cancer cells in vitro by the low-density-lipoprotein pathway

1995 ◽  
Vol 36 (1) ◽  
pp. 1-6 ◽  
Author(s):  
T. Tokui ◽  
Toshiro Takatori ◽  
Nobue Shinozaki ◽  
Michi Ishigami ◽  
Akio Shiraishi ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Cancer Cells ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Human Gastric Cancer ◽  
Low Density ◽  
Gastric Cancer Cells

Delivery and cytotoxicity of RS-1541 in St-4 human gastric cancer cells in vitro by the low-density-lipoprotein pathway

1995 ◽  
Vol 36 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Taro Tokui ◽  
Toshiro Takatori ◽  
Nobue Shinozaki ◽  
Michi Ishigami ◽  
Akio Shiraishi ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Cancer Cells ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Human Gastric Cancer ◽  
Low Density ◽  
Gastric Cancer Cells

Oleanolic acid induces autophagic death in human gastric cancer cells in vitro and in vivo

2016 ◽  
Vol 40 (7) ◽  
pp. 770-778 ◽  
Author(s):  
Hao Nie ◽  
Yu Wang ◽  
Yong Qin ◽  
Xing-Guo Gong
Keyword(s):  
Gastric Cancer ◽  
Cancer Cells ◽  
Oleanolic Acid ◽  
Human Gastric Cancer ◽  
Gastric Cancer Cells

scholarly journals Potent and specific MTH1 inhibitors targeting gastric cancer

2019 ◽  
Vol 10 (6) ◽  
Author(s):  
Wenjuan Zhou ◽  
Liying Ma ◽  
Jing Yang ◽  
Hui Qiao ◽  
Lingyu Li ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Cancer Cells ◽  
Cell Lines ◽  
Malignant Tumors ◽  
Inhibitory Effect ◽  
Human Gastric Cancer ◽  
Gastric Cancer Cells ◽  
Dntp Pool ◽  
Cancer Tissues

Abstract Human mutT homolog 1(MTH1), the oxidized dNTP pool sanitizer enzyme, has been reported to be highly expressed in various malignant tumors. However, the oncogenic role of MTH1 in gastric cancer remains to be determined. In the current study, we found that MTH1 was overexpressed in human gastric cancer tissues and cells. Using an in vitro MTH1 inhibitor screening system, the compounds available in our laboratory were screened and the small molecules containing 5-cyano-6-phenylpyrimidine structure were firstly found to show potently and specifically inhibitory effect on MTH1, especially compound MI-743 with IC50 = 91.44 ± 1.45 nM. Both molecular docking and target engagement experiments proved that MI-743 can directly bind to MTH1. Moreover, MI-743 could not only inhibit cell proliferation in up to 16 cancer cell lines, especially gastric cancer cells HGC-27 and MGC-803, but also significantly induce MTH1-related 8-oxo-dG accumulation and DNA damage. Furthermore, the growth of xenograft tumours derived by injection of MGC-803 cells in nude mice was also significantly inhibited by MI-743 treatment. Importantly, MTH1 knockdown by siRNA in those two gastric cancer cells exhibited the similar findings. Our findings indicate that MTH1 is highly expressed in human gastric cancer tissues and cell lines. Small molecule MI-743 with 5-cyano-6-phenylpyrimidine structure may serve as a novel lead compound targeting the overexpressed MTH1 for gastric cancer treatment.

Effect of trastuzumab on telomere-related proteins and the relationship to the sensitivity of HER2-amplified human gastric cancer cells to oxaliplatin and cisplatin.

2013 ◽  
Vol 31 (4_suppl) ◽  
pp. 53-53
Author(s):  
Yongping Liu ◽  
Yang Ling ◽  
Qiu feng Qi ◽  
Yaodong Pan
Keyword(s):  
Gastric Cancer ◽  
Cancer Cells ◽  
Annexin V ◽  
Human Gastric Cancer ◽  
Her2 Gene ◽  
Gastric Cancer Cells ◽  
Real Time Quantitative Pcr ◽  
Induced Apoptosis ◽  
Platinum Agents

53 Background: HER2 amplification occurs in about 20% of gastric cancers, and trastuzumab in combination with cisplatin based chemotherapy has been reported to improve oncological outcomes in gastric and gastro-oesophageal junction cancer with HER2 gene amplification. The aim of this study was to evaluate the potentially useful combined antitumor efficacy of trastuzumab and platinum agents in gastric cancer cells and to elucidate further the mechanisms possibly involved in the interaction between the trastuzumab and platinum agents. Methods: Gene expression was determined by using real-time quantitative PCR in gastric cancer cell lines. The chemosensitivity of gastric cancer cells to platinum agents and the apoptotic effect of drugs in vitro were evaluated using cellTiter 96 Aqueous One Solution Cell Proliferation Assay kit and double staining with both Annexin-V-FITC and PI, respectively. Results: Treatment with 1.0μg/ml trastuzumab for 48h could significantly increase sensitivity of oxaliplatin or cisplatin in HER2 amplified gastric cancer cells, and the IC50 of oxaliplatin and cisplatin were reduced to about 3.29 times and 6.91 times, respectively. Apoptosis analysis also indicated that trastuzumab significantly increased both oxaliplatin and cisplatin-induced apoptosis in NCI-N87 cells. Analysis of telomere-related genes revealed that trastuzumab singly and pretreatment with trastuzumab for 48h followed by oxaliplatin or cisplatin for another 48h could significantly downregulate the mRNA expression of TPP1, TRF1, TRF2, TRF2IP, POT1 and TIN2 genes. Conclusions: Our results describe the potential role of low dose trastuzumab to increase sensitivity of oxaliplatin and cisplatin in HER2 amplified gastric cancer cells, which may be partially through downregulating the expression levels of telomere-related genes.

scholarly journals Silencing of TKTL1 by siRNA inhibits proliferation of human gastric cancer cells in vitro and in vivo

2010 ◽  
Vol 9 (9) ◽  
pp. 710-716 ◽  
Author(s):  
Weijie Yuan ◽  
Shaobin Wu ◽  
Jianwu Guo ◽  
Zhikang Chen ◽  
Jie Ge ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Cancer Cells ◽  
Human Gastric Cancer ◽  
Gastric Cancer Cells
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