title: Integrative meta-analysis identifies microRNA-regulated networks in infantile hemangioma.
abstract: BACKGROUND
  Hemangioma is a common benign tumor in the childhood; however our knowledge about the molecular mechanisms of hemangioma development and progression are still limited. Currently, microRNAs (miRNAs) have been shown as gene expression regulators with an important role in disease pathogenesis. Our goals were to identify miRNA-mRNA expression networks associated with infantile hemangioma.
  
  
  METHODS
  We performed a meta-analysis of previously published gene expression datasets including 98 hemangioma samples. Deregulated genes were further used to identify microRNAs as potential regulators of gene expression in infantile hemangioma. Data were integrated using bioinformatics methods, and genes were mapped in proteins, which were then used to construct protein-protein interaction networks.
  
  
  RESULTS
  Deregulated genes play roles in cell growth and differentiation, cell signaling, angiogenesis and vasculogenesis. Regulatory networks identified included microRNAs miR-9, miR-939 and let-7 family; these microRNAs showed the most number of interactions with deregulated genes in infantile hemangioma, suggesting that they may have an important role in the molecular mechanisms of disease. Additionally, results were used to identify drug-gene interactions and druggable gene categories using Drug-Gene Interaction Database. We show that microRNAs and microRNA-target genes may be useful biomarkers for the development of novel therapeutic strategies for patients with infantile hemangioma.
  
  
  CONCLUSIONS
  microRNA-regulated pathways may play a role in infantile hemangioma development and progression and may be potentially useful for future development of novel therapeutic strategies for patients with infantile hemangioma.
authors.affiliation: Department of Surgery and Orthopedics, Faculty of Medicine, São Paulo State University-UNESP, Av. Prof. Montenegro, 18618-970, Botucatu, São Paulo, Brazil. bertoni.na@gmail.com.
authors.forename: Natália
authors.initials: N
authors.lastname: Bertoni
authors.affiliation: Department of Surgery and Orthopedics, Faculty of Medicine, São Paulo State University-UNESP, Av. Prof. Montenegro, 18618-970, Botucatu, São Paulo, Brazil. lied.pereira@gmail.com.
authors.forename: Lied M S
authors.initials: LM
authors.lastname: Pereira
authors.affiliation: Department of Surgery and Orthopedics, Faculty of Medicine, São Paulo State University-UNESP, Av. Prof. Montenegro, 18618-970, Botucatu, São Paulo, Brazil. fabio.bjj@gmail.com.
authors.forename: Fábio E
authors.initials: FE
authors.lastname: Severino
authors.affiliation: Department of Surgery and Orthopedics, Faculty of Medicine, São Paulo State University-UNESP, Av. Prof. Montenegro, 18618-970, Botucatu, São Paulo, Brazil. rmoura@fmb.unesp.br.
authors.forename: Regina
authors.initials: R
authors.lastname: Moura
authors.affiliation: Department of Surgery and Orthopedics, Faculty of Medicine, São Paulo State University-UNESP, Av. Prof. Montenegro, 18618-970, Botucatu, São Paulo, Brazil. winston@fmb.unesp.br.
authors.forename: Winston B
authors.initials: WB
authors.lastname: Yoshida
authors.affiliation: Department of Surgery and Orthopedics, Faculty of Medicine, São Paulo State University-UNESP, Av. Prof. Montenegro, 18618-970, Botucatu, São Paulo, Brazil. preis@fmb.unesp.br.
authors.forename: Patricia P
authors.initials: PP
authors.lastname: Reis
mesh_terms: D014408:Biomarkers, Tumor; D045744:Cell Line, Tumor; D049109:Cell Proliferation; D019295:Computational Biology; D018450:Disease Progression; D015972:Gene Expression Regulation, Neoplastic; D053263:Gene Regulatory Networks; D006391:Hemangioma / Q000235:genetics*; D006801:Humans; D007223:Infant; D035683:MicroRNAs / Q000235:genetics* / Q000378:metabolism; D060066:Protein Interaction Maps
chemical_list: D014408:Biomarkers, Tumor; C541874:MIRN92 microRNA, human; C000604729:MIRN939 microRNA, human; D035683:MicroRNAs