title: [Construction and identification of recombinant lentivirus vector for microRNA-223 overexpression and suppression].
abstract: OBJECTIVE
  To construct microRNA-223 overexpression and suppression lentivirus vectors and determine their effects after infecting oral squamous cell carcinoma (OSCC) cell line.
  
  
  METHODS
  Lentivirus vectors GV229 and GV232 were cut by the restriction sites of Age I and EcoR I and connected to the target gene, which contained mature microRNA-223 and microRNA-223 oligonucleotide. Real-time polymerase chain reaction (PCR) method was used to detect the microRNA-223 expression level after infecting the recombinant lentivirus vector into the OSCC cell line.
  
  
  RESULTS
  The successful construction of microRNA-223 recombinant lentivirus vectors was confirmed by the PCR method and DNA sequencing. HN-30 cell infected with microRNA-223 overexpression vector showed a significant increased in microRNA-223 expression, whereas HN-30 cell infected with microRNA-223 inhibitor vector suppressed microRNA-223 expression.
  
  
  CONCLUSIONS
  The microRNA-223 overexpression and suppression lentivirus vectors are successfully constructed. These vectors could alter the expression level of microRNA-223 in OSCC cell line significantly, and provide a stable cell line for functional studies in the future.
authors.forename: Yun
authors.initials: Y
authors.lastname: Wang
authors.forename: Ning
authors.initials: N
authors.lastname: Ji
authors.forename: Min
authors.initials: M
authors.lastname: Zhou
authors.forename: Lu
authors.initials: L
authors.lastname: Jiang
authors.forename: Qianming
authors.initials: Q
authors.lastname: Chen
mesh_terms: D001483:Base Sequence; D045744:Cell Line, Tumor; D005822:Genetic Vectors; D006801:Humans; D016086:Lentivirus; D035683:MicroRNAs / Q000378:metabolism*; D060888:Real-Time Polymerase Chain Reaction
chemical_list: D035683:MicroRNAs