title: MicroRNA-125a-5p modulates human cervical carcinoma proliferation and migration by targeting ABL2.
abstract: BACKGROUND
  In this study, we intended to understand the regulatory mechanisms of microRNA-125a-5p (miR-125a-5p) in human cervical carcinoma.
  
  
  METHODS
  The gene expressions of miR-125a-5p in seven cervical carcinoma cell lines and 12 human cervical carcinoma samples were evaluated by quantitative real-time reverse transcription polymerase chain reaction. Ca-Ski and HeLa cells were transduced with lentivirus carrying miR-125a-5p mimics, and the effects of lentivirus-induced miR-125a-5p upregulation on cervical carcinoma proliferation and migration were examined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide and transwell assays, respectively. In additional, HeLa cells were inoculated into null mice to evaluate the effect of miR-125a-5p upregulation on in vivo cervical carcinoma growth. The direct regulation of miR-125a-5p on its target gene, ABL proto-oncogene 2 (ABL2), in cervical carcinoma was evaluated by quantitative real-time reverse transcription polymerase chain reaction, Western blotting and luciferase reporter assays, respectively. ABL2 was then downregulated by small interfering RNA to examine its effect on cervical carcinoma proliferation and migration.
  
  
  RESULTS
  miR-125a-5p was downregulated in both cervical carcinoma cell lines and human cervical carcinomas. In Ca-Ski and HeLa cells, lentivirus-mediated miR-125a-5p upregulation inhibited cancer proliferation and migration in vitro and cervical carcinoma transplantation in vivo. ABL2 was shown to be directly targeted by miR-125a-5p. In cervical carcinoma, ABL2 gene and protein levels were both downregulated by miR-125a-5p. Small interfering RNA-mediated ABL2 downregulation also had tumor-suppressive effects on cervical carcinoma proliferation and migration.
  
  
  CONCLUSIONS
  The molecular pathway of miR-125a-5p/ABL2 plays an important role in human cervical carcinoma. Targeting miR-125a-5p/ABL2 pathway may provide a new treatment strategy for patients with cervical carcinoma.
authors.affiliation: Department of Obstetrics and Gynecology, Central South University, Changsha, People's Republic of China.
authors.forename: Xian
authors.initials: X
authors.lastname: Qin
authors.affiliation: Department of Obstetrics and Gynecology, Central South University, Changsha, People's Republic of China.
authors.forename: Yajun
authors.initials: Y
authors.lastname: Wan
authors.affiliation: Department of Anesthesiology, Third Xiangya Hospital, Central South University, Changsha, People's Republic of China.
authors.forename: Saiying
authors.initials: S
authors.lastname: Wang
authors.affiliation: Department of Obstetrics and Gynecology, Central South University, Changsha, People's Republic of China.
authors.forename: Min
authors.initials: M
authors.lastname: Xue
mesh_terms: D000818:Animals; D045744:Cell Line, Tumor; D002465:Cell Movement / Q000235:genetics; D049109:Cell Proliferation / Q000235:genetics*; D015536:Down-Regulation; D005260:Female; D015972:Gene Expression Regulation, Neoplastic; D006367:HeLa Cells; D006801:Humans; D016086:Lentivirus / Q000235:genetics; D051379:Mice; D008819:Mice, Nude; D035683:MicroRNAs / Q000235:genetics*; D011505:Protein-Tyrosine Kinases / Q000235:genetics*; D000090063:Proto-Oncogene Mas; D034741:RNA, Small Interfering / Q000008:administration & dosage; D060888:Real-Time Polymerase Chain Reaction; D020133:Reverse Transcriptase Polymerase Chain Reaction; D015854:Up-Regulation; D002583:Uterine Cervical Neoplasms / Q000235:genetics*
chemical_list: C000715470:MAS1 protein, human; C531888:MIRN125 microRNA, human; D035683:MicroRNAs; D000090063:Proto-Oncogene Mas; D034741:RNA, Small Interfering; C426236:ARG tyrosine kinase; D011505:Protein-Tyrosine Kinases
keywords: ABL2; cancer migration; cancer proliferation; cervical carcinoma; miR-125a-5p