title: Depleting ABCE1 expression induces apoptosis and inhibits the ability of proliferation and migration of human esophageal carcinoma cells.
abstract: OBJECTIVE
  This study aims to explore the clinical characteristics of ABCE1 in esophageal cancers and its roles in the proliferation, invasiveness, migration and apoptosis of the esophageal carcinoma Eca109 cell line.
  
  
  METHODS
  The expression of ABCE1 and its target protein-RNase L, were first studied in tumor tissues of esophageal carcinoma and adjacent non-tumor tissues. The siRNA green fluorescent protein (GFP) expression vector of ABCE1 was prepared and transfected into the esophageal carcinoma Eca109 cells, then the fluorescence microscope was used to study the transfection efficiency. The MTT assay, cell invasion, the transwell and scratch assay were used to study cell proliferation and migration activity; the apoptosis rate was tested by flow cytometry. Western blot and RT-PCR assay were adopted to measure their silencing efficacy.
  
  
  RESULTS
  ABCE1 expression is low in the adjacent non-tumor tissues while the expression is high in the esophageal carcinoma; the expression is reversely proportional to the differentiation degrees. The expression of RNase L was in contrary to ABCE1. After transfected with ABCE1-siRNA, the proliferation, invasiveness and migration capabilities of cells decreased significantly whilst the apoptosis rate enhanced greatly (P<0.01). Meanwhile, the expression of ABCE1 in Eca109 cells was blocked (P<0.01) while the expression of RNase L increased significantly (P<0.01).
  
  
  CONCLUSIONS
  ABCE1 is closely connected with the pathogenesis and development of esophageal carcinoma, which act through the cellular pathways of 2-5A/RNase L.
authors.affiliation: Department of Thoracic Surgery, The First Affiliated Hospital of Liaoning Medical University No. 2 People Street, Jinzhou, Liaoning 121000, People's Republic of China.
authors.forename: Bo
authors.initials: B
authors.lastname: Huang
authors.affiliation: Department of Thoracic Surgery, The First Affiliated Hospital of Liaoning Medical University No. 2 People Street, Jinzhou, Liaoning 121000, People's Republic of China.
authors.forename: Xiangnan
authors.initials: X
authors.lastname: Gong
authors.affiliation: Department of Thoracic Surgery, The First Affiliated Hospital of Liaoning Medical University No. 2 People Street, Jinzhou, Liaoning 121000, People's Republic of China.
authors.forename: Hongli
authors.initials: H
authors.lastname: Zhou
authors.affiliation: Department of Thoracic Surgery, The First Affiliated Hospital of Liaoning Medical University No. 2 People Street, Jinzhou, Liaoning 121000, People's Republic of China.
authors.forename: Fei
authors.initials: F
authors.lastname: Xiong
authors.affiliation: Department of Thoracic Surgery, The First Affiliated Hospital of Liaoning Medical University No. 2 People Street, Jinzhou, Liaoning 121000, People's Republic of China.
authors.forename: Siwang
authors.initials: S
authors.lastname: Wang
mesh_terms: D018528:ATP-Binding Cassette Transporters / Q000172:deficiency* / Q000235:genetics; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D017209:Apoptosis; D014408:Biomarkers, Tumor / Q000172:deficiency* / Q000235:genetics; D002277:Carcinoma / Q000235:genetics / Q000378:metabolism* / Q000473:pathology; D002454:Cell Differentiation; D045744:Cell Line, Tumor; D002465:Cell Movement; D049109:Cell Proliferation; D015536:Down-Regulation; D004722:Endoribonucleases / Q000378:metabolism; D004938:Esophageal Neoplasms / Q000235:genetics / Q000378:metabolism* / Q000473:pathology; D005260:Female; D015972:Gene Expression Regulation, Neoplastic; D049452:Green Fluorescent Proteins / Q000235:genetics / Q000378:metabolism; D006801:Humans; D008297:Male; D008875:Middle Aged; D034622:RNA Interference; D015398:Signal Transduction; D013997:Time Factors; D014162:Transfection
chemical_list: C501917:ABCE1 protein, human; D018528:ATP-Binding Cassette Transporters; D014408:Biomarkers, Tumor; D049452:Green Fluorescent Proteins; D004722:Endoribonucleases; C031956:2-5A-dependent ribonuclease
keywords: ABCE1; Eca109 cells; RNase L; esophageal carcinoma; siRNA