Integrated Interaction Network of MicroRNA Target Genes in Keloid Scarring

  • Lechun Lyu
  • Yu Zhao
  • Hongquan Lu
  • Zijie Liu
  • Jiazhi Guo
  • Di LuEmail author
  • Xiang Li
Current Opinion


Keloids are a common dermal pathological disorder characterized by the excessive deposition of extracellular matrix components; however, the exact pathogenesis of the disease is still not clear. Studies increasingly suggest that microRNAs (miRNAs) can play a key role in the process of keloid scarring. In this study, the valuable miRNAs and target genes were screened and the interaction network was constructed. We also predicted target genes of reported miRNAs using TargetScan and miRTarBase software. Cytoscape 3.0.1 further showed the interaction network of miRNA and target genes. Among the various miRNAs involved in keloid pathogenesis, miRNA-21, miRNA-141-3p, miRNA-181a, and miRNA-205 were thought to up-regulate the proliferation and decrease apoptosis of keloid-derived fibroblasts through the PI3K/Akt/mammalian target of rapamycin (mTOR) signaling pathway. miRNA-637 and miRNA-1224 inhibited keloid fibroblasts proliferation and promoted apoptosis via the transforming growth factor (TGF)-β1/Smad3 signaling pathway. miRNA-21 was also involved in mitochondrial-mediated apoptosis and miRNA-31 targeted vascular endothelial growth factor (VEGF) signaling pathway. miRNA-199a may be one key factor in the cell cycle checkpoint signal pathway of keloid-derived fibroblasts. It was also found that miRNA-29a and miRNA-196a mediated collagen metabolism. These pivotal miRNAs and regulatory processes further improve the data on the epigenetic mechanisms of keloids and provide hope for the use of small molecules in the treatment of keloids.


Compliance with Ethical Standards

Conflict of interest

Lechun Lyu, Yu Zhao, Hongquan Lu, Zijie Liu, Jiazhi Guo, Di Lu, and Xiang Li have no conflicts of interest.


The authors are supported by grants from the National Natural Science Foundation of China (NSFC; Grant no. 81560502), the National Natural Science Foundation of Yunnan Province (Grant no. 2017FB116), the Talent Project of Yunnan Province (Lechun Lyu) and 100 Talents Program of Kunming Medical University (Lechun Lyu).

Supplementary material

40291_2018_378_MOESM1_ESM.doc (210 kb)
Supplementary material 1 (DOC 210 kb)


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Lechun Lyu
    • 1
  • Yu Zhao
    • 2
  • Hongquan Lu
    • 2
  • Zijie Liu
    • 3
  • Jiazhi Guo
    • 2
  • Di Lu
    • 1
    • 2
    Email author
  • Xiang Li
    • 4
  1. 1.Technology Transfer CenterKunming Medical UniversityKunmingChina
  2. 2.Biomedical Engineering Research CenterKunming Medical UniversityKunmingChina
  3. 3.Department of Medical Laboratory Sciencesthe First Affiliated Hospital of Kunming Medical UniversityKunmingChina
  4. 4.Department of RehabilitationAffiliated Hospital of Jining Medical UniversityJiningChina

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