title: Establishment and biological analysis of the EC109/CDDP multidrug-resistant esophageal squamous cell carcinoma cell line.
abstract: The aim of this study was to establish a stable, drug-resistant esophageal squamous cell carcinoma (ESCC) cell line. The human ESCC cell line EC109 was exposed to cisplatin (CDDP) by pulse treatment to select for the drug-resistant subline, EC109/CDDP cells. The MTT assay was used to test the drug resistance of EC109 and EC109/CDDP cells. In addition, cellular morphological changes were observed using microscopy and the growth curves of the two cell lines were drawn to calculate the doubling time. Furthermore, cell cycle distribution was analyzed by flow cytometry. Finally, RT-PCR was performed to determine the mRNA expression levels of drug-resistant-related genes, multidrug resistance 1 (MDR1), multidrug resistance-associated protein 1 (MRP1), ATP-binding cassette, sub-family G, member 2 (ABCG2), lung resistance protein (LRP), and glutathione S-transferase (GST)-pi in both cell lines. EC109/CDDP cells exhibited increased resistance to CDDP, carboplatin, 5-fluorouracil, taxol, navelbine, irinotecan and etoposide, and changes in morphology, doubling time, and cell cycle distribution were detected as compared with EC109 cells. Although there was no significant difference in MRP1, ABCG2, LRP, and GST-pi expression, MDR1 expression in EC109/CDDP cells was lower than that of EC109 cells. EC109/CDDP cells are a stable, multidrug-resistant ESCC cell line and could serve as an important tool for further research concerning ESCC drug resistance.
authors.affiliation: Department of Thoracic Oncology, Cancer Center, Sun Yat-Sen University, State Key Laboratory of Oncology in Southern China, Guangzhou, P.R. China.
authors.forename: Jing
authors.initials: J
authors.lastname: Wen
authors.forename: Bin
authors.initials: B
authors.lastname: Zheng
authors.forename: Yi
authors.initials: Y
authors.lastname: Hu
authors.forename: Xu
authors.initials: X
authors.lastname: Zhang
authors.forename: Hong
authors.initials: H
authors.lastname: Yang
authors.forename: Kong-Jia
authors.initials: KJ
authors.lastname: Luo
authors.forename: Xing
authors.initials: X
authors.lastname: Zhang
authors.forename: Yong-Feng
authors.initials: YF
authors.lastname: Li
authors.forename: Jian-Hua
authors.initials: JH
authors.lastname: Fu
mesh_terms: D018435:ATP Binding Cassette Transporter, Subfamily B; D020168:ATP Binding Cassette Transporter, Subfamily B, Member 1 / Q000235:genetics; D000070997:ATP Binding Cassette Transporter, Subfamily G, Member 2; D018528:ATP-Binding Cassette Transporters / Q000235:genetics; D000970:Antineoplastic Agents / Q000494:pharmacology*; D002294:Carcinoma, Squamous Cell / Q000235:genetics / Q000378:metabolism / Q000473:pathology*; D002453:Cell Cycle / Q000187:drug effects; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D048430:Cell Shape / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D002945:Cisplatin / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D018432:Drug Resistance, Multiple / Q000235:genetics; D019008:Drug Resistance, Neoplasm / Q000235:genetics; D004938:Esophageal Neoplasms / Q000235:genetics / Q000378:metabolism / Q000473:pathology*; D015972:Gene Expression Regulation, Neoplastic / Q000187:drug effects; D051549:Glutathione S-Transferase pi / Q000235:genetics; D006801:Humans; D027425:ATP-Binding Cassette, Sub-Family C Proteins / Q000235:genetics; D009363:Neoplasm Proteins / Q000235:genetics; D010641:Phenotype; D012333:RNA, Messenger / Q000378:metabolism; D020394:Vault Ribonucleoprotein Particles / Q000235:genetics; D000099187:Major Vault Protein
chemical_list: D018435:ATP Binding Cassette Transporter, Subfamily B; D020168:ATP Binding Cassette Transporter, Subfamily B, Member 1; D000070997:ATP Binding Cassette Transporter, Subfamily G, Member 2; D018528:ATP-Binding Cassette Transporters; D000970:Antineoplastic Agents; D002945:Cisplatin; D051549:Glutathione S-Transferase pi; D027425:ATP-Binding Cassette, Sub-Family C Proteins; D009363:Neoplasm Proteins; D012333:RNA, Messenger; D020394:Vault Ribonucleoprotein Particles; D000099187:Major Vault Protein; C513055:ABCB1 protein, human; C116614:ABCG2 protein, human; C496556:GSTP1 protein, human; C421109:multidrug resistance-associated protein 1