title: Bioinformatic analysis of microRNA and mRNA Regulation in peripheral blood mononuclear cells of patients with chronic obstructive pulmonary disease.
abstract: Chronic obstructive pulmonary disease (COPD) is a progressive, irreversible chronic inflammatory disorder typified by increased recruitment of monocytes, lymphocytes and neutrophils. Because of this, as well as the convenience of peripheral blood nuclear cells (PBMCs) assessments, miRNA profiling of PBMCs has drawn increasing attention in recent years for various disease. Therefore, we analyzed miRNA and mRNA profiles to understand their regulatory network between COPD subjects versus smokers without airflow limitation.
  
  
  
  miRNA and mRNA profiling of PBMCs from pooled 17 smokers and 14 COPD subjects was detected by high-throughput microarray. The expression of dysregulated miRNAs were validated by q-PCR. The miRNA targets in dysregulated mRNAs were predicted and the pathway enrichment was analyzed.
  
  
  
  miRNA microarray showed that 8 miRNAs were up-regulated and 3 miRNAs were down-regulated in COPD subjects compared with smokers; the upregulation of miR-24-3p, miR-93-5p, miR-320a and miR-320b and the downregulation of miR-1273 g-3p were then validated. Bioinformatic analysis of regulatory network between miRNA and mRNA showed that NOD and TLR were the most enriched pathways. miR-24-3p was predicted to regulate IL-18, IL-1β, TNF, CCL3 and CCL4 and miR-93-5p to regulate IκBα.
  
  
  
  The expression of miRNA and mRNA were dysregulated in PBMCs of COPD patients compared with smokers without airflow limitation. The regulation network between the dysregulated miRNA and mRNA may provide potential therapeutic targets for COPD.
authors.affiliation: Department of Respiration, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, 710061, Shaanxi province, China.
authors.forename: Xiaomin
authors.initials: X
authors.lastname: Dang
authors.affiliation: Center for Translational Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi province, China.
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Qu
authors.affiliation: Center for Translational Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi province, China.
authors.forename: Weijia
authors.initials: W
authors.lastname: Wang
authors.affiliation: Center for Translational Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi province, China.
authors.forename: Chongbing
authors.initials: C
authors.lastname: Liao
authors.affiliation: Center for Translational Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi province, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Li
authors.affiliation: Center for Translational Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi province, China.
authors.forename: Xiaojin
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Center for Translational Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi province, China.
authors.forename: Dan
authors.initials: D
authors.lastname: Xu
authors.affiliation: Meakins-Christie Laboratories and Respiratory Division, Health Centre and Department of Medicine, McGill University, Montreal, QC, Canada.
authors.forename: Carolyn J
authors.initials: CJ
authors.lastname: Baglole
authors.affiliation: Department of Respiration, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an, 710061, Shaanxi province, China. sd74@vip.sina.com.
authors.forename: Dong
authors.initials: D
authors.lastname: Shang
authors.affiliation: Center for Translational Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi province, China. changyingcn@hotmail.com.
authors.forename: Ying
authors.initials: Y
authors.lastname: Chang
mesh_terms: D000368:Aged; D019295:Computational Biology / Q000379:methods; D005260:Female; D005786:Gene Expression Regulation / Q000235:genetics*; D006801:Humans; D007963:Leukocytes, Mononuclear / Q000378:metabolism*; D008297:Male; D035683:MicroRNAs / Q000097:blood* / Q000235:genetics; D008875:Middle Aged; D029424:Pulmonary Disease, Chronic Obstructive / Q000097:blood* / Q000235:genetics*; D012333:RNA, Messenger / Q000097:blood* / Q000235:genetics; D012907:Smoking / Q000378:metabolism*
chemical_list: D035683:MicroRNAs; D012333:RNA, Messenger
keywords: COPD; MicroRNA; Microarray; PBMC; miRNA