Abstract:
:The main aim of this study was to establish a novel paclitaxel (PTX)-resistant human gastric carcinoma cell line and to investigate its biological significance. A cell line, MGC803/PTX, was established by gradually increasing PTX density on the basis of MGC803 over a period of 10 months. In addition, a pair of resistant cell lines (SW620 and SW620/PTX) were added to further explain the resistant mechanism of PTX. The drug resistance index and stability of MGC803/PTX cells were detected using the Cell Counting Kit-8 method. The morphological features were observed using inverted microscopy. Apoptosis was measured by flow cytometry (FCM) and Hoechst 33258 fluorescence staining. The distribution of the cell cycle was determined by FCM, and protein expressions of P-gp, Bcl-2, Bax, and PARP were detected by western blot analysis. When characterizing the resistance in vitro, we found that MGC803/PTX cells were 10.3-fold more resistant to PTX compared with MGC803 cells. In addition, MGC803/PTX cells showed cross-resistance to 5-fluorouracil and adriamycin. FCM and Hoechst 33258 fluorescence staining indicated that MGC803/PTX cells had a significantly lower percentage of apoptotic cells after treatment with PTX compared with MGC803 cells. Other differences between parental cells and resistant cells included morphology, proliferation rate, doubling time, cell cycle distribution, and colony-formation rate. Western blot analysis indicated that P-gp, Bcl-2, and PARP protein were more abundant in MGC803/PTX and SW620/PTX cells compared with MGC803 and SW620 cells, whereas Bax protein levels were lower in resistant cells. Furthermore, MGC803/PTX cells showed obvious resistance to PTX in vivo. To our knowledge, this is the first report on the establishment of a PTX-resistant MGC803 cell line, which is an important tool to explore the resistance of anticancer drugs and to overcome tumor drug resistance.
journal_name
Anticancer Drugsjournal_title
Anti-cancer drugsauthors
Fu L,Yin F,Li XR,Han BK,Zhang C,Wang JW,Wang YQ,Bi YF,Liu HMdoi
10.1097/CAD.0000000000000601subject
Has Abstractpub_date
2018-07-01 00:00:00pages
491-502issue
6eissn
0959-4973issn
1473-5741journal_volume
29pub_type
杂志文章abstract::Management of gastric cancer in older adults is challenging. Perioperative treatment with epirubicin, cisplatin, and 5-fluorouracil combination chemotherapy and surgery is considered the standard treatment of locally advanced gastric adenocarcinoma. However, this chemotherapy regimen is not well tolerated in older adu...
journal_title:Anti-cancer drugs
pub_type: 杂志文章
doi:10.1097/CAD.0b013e32834a2c16
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journal_title:Anti-cancer drugs
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journal_title:Anti-cancer drugs
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doi:10.1097/00001813-199012000-00012
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journal_title:Anti-cancer drugs
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journal_title:Anti-cancer drugs
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journal_title:Anti-cancer drugs
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journal_title:Anti-cancer drugs
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journal_title:Anti-cancer drugs
pub_type: 杂志文章
doi:10.1097/00001813-199012000-00009
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journal_title:Anti-cancer drugs
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doi:
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abstract::Norcantharidin (NCTD), a chemically modified form of cantharidin, is a potential anticancer drug. This study investigated the effect of NCTD on anoikis in CT26 colorectal adenocarcinoma cells. NCTD treatment of CT26 cells showed a dose-dependent and time-dependent decrease in viability and cell proliferation. Growth i...
journal_title:Anti-cancer drugs
pub_type: 杂志文章
doi:10.1097/CAD.0b013e3282f18826
更新日期:2008-01-01 00:00:00
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journal_title:Anti-cancer drugs
pub_type: 杂志文章
doi:10.1097/CAD.0b013e328364e66b
更新日期:2013-10-01 00:00:00
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journal_title:Anti-cancer drugs
pub_type: 杂志文章,评审
doi:10.1097/CAD.0b013e32801476fd
更新日期:2007-07-01 00:00:00
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journal_title:Anti-cancer drugs
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abstract::13,14-Dihydro-15-deoxy-Delta7-prostaglandin A1 methyl ester (TEI-9826), an antitumor prostaglandin analog, is a candidate for clinical trial. In the present study, we examined its biological stability in vitro, antitumor activity in vitro and in vivo, and pharmacokinetics. Although TEI-9826 was rapidly hydrolyzed to t...
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journal_title:Anti-cancer drugs
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abstract::Irinotecan (CPT-11) is a camptothecin analog with low (about 10--20%) and variable oral bioavailability in animal models. Here, Caco-2 cells were used to evaluate the transepithelial transport of CPT-11 and its metabolites. Caco-2 cells demonstrated significant expression of P-glycoprotein (P-gp), multidrug resistance...
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abstract::Trimetrexate (TMQ), a non-classical folate antagonist, was studied in a randomized controlled trial in patients with advanced colorectal cancer and without prior chemotherapy. Patients were randomly assigned to one of three treatments: TMQ at 200 mg/m2 i.v. q 2 weeks, TMQ at 12 mg/m2 i.v. daily x 5 or 5-fluorouracil (...
journal_title:Anti-cancer drugs
pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:Anti-cancer drugs
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