title: Preliminary study of DNA microarray of human placenta gene expression profile.
abstract: OBJECTIVE
  To prepare human placenta genechip for analyzing differential gene expressions.
  
  
  METHODS
  The target gene amplified from Hybrid Hunter cDNA library was dotted onto the slides by the arrayer (PixSys 5500). Total RNA from K562 cells treated with or without arsenic trioxide was extracted, the mRNA purified and cDNA synthesized. Fluorescent labeling of the samples was performed by restriction display PCR, followed by hybridization with the microarray that was subsequently washed and scanned, with the derived signals analyzed by computer.
  
  
  RESULTS
  A reliable and specific method for preparing and assessing gene expression profile microarray was established, with which a total of 45 differentially expressed gene fragments were isolated.
  
  
  CONCLUSIONS
  The genechips can be helpful in the analysis of differential gene expressions.
authors.affiliation: Institute of Molecular Biology and Key Laboratory for Biochip of PLA, First Military Medical University, Guangzhou 510515, China.
authors.forename: Li-Na
authors.initials: LN
authors.lastname: Zhu
authors.forename: Wen-Li
authors.initials: WL
authors.lastname: Ma
authors.forename: Xiang-Ming
authors.initials: XM
authors.lastname: Mao
authors.forename: Ling
authors.initials: L
authors.lastname: Li
authors.forename: Chun-Qiong
authors.initials: CQ
authors.lastname: Feng
authors.forename: Wen-Ling
authors.initials: WL
authors.lastname: Zheng
mesh_terms: D005260:Female; D020869:Gene Expression Profiling; D015723:Gene Library; D006801:Humans; D020014:K562 Cells; D020411:Oligonucleotide Array Sequence Analysis / Q000379:methods*; D010920:Placenta / Q000378:metabolism*; D011247:Pregnancy; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism
chemical_list: D012333:RNA, Messenger