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Related Experiment Video

Updated: Jul 13, 2025

Isolation, Processing and Analysis of Murine Gingival Cells
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miRNAs from Inflamed Gingiva Link Gene Signaling to Increased MET Expression.

L Zheng1, A Chopra1, J Weiner2

  • 1Department of Periodontology, Oral Medicine and Oral Surgery, Institute for Dental and Craniofacial Sciences, Charité-University Medicine Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.

Journal of Dental Research
|October 12, 2023
PubMed
Summary

Seven microRNAs (miRNAs) linked to periodontal inflammation were studied. These miRNAs regulate genes involved in cell cycle, cell adhesion, and interferon signaling, notably increasing MET proto-oncogene expression for tissue repair.

Keywords:
ABCA1ATP6V1C1CPEB1cell cyclemesenchymal cellular migrationperiodontitis

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Area of Science:

  • Molecular Biology
  • Genomics
  • Periodontology

Background:

  • Periodontal inflammation is associated with altered microRNA (miRNA) expression in gingival tissues.
  • Specific miRNAs, including hsa-miR-130a-3p, -142-3p, -144-3p, -144-5p, -223-3p, -17-5p, and -30e-5p, show increased levels during inflammation.

Purpose of the Study:

  • To identify direct target genes and signaling pathways regulated by these upregulated miRNAs.
  • To elucidate the role of these miRNAs in gingival inflammatory responses and tissue homeostasis.

Main Methods:

  • Transfection of miRNA mimics into primary human gingival fibroblasts.
  • RNA sequencing to analyze differential gene expression.
  • Validation of miRNA targets using quantitative reverse transcriptase polymerase chain reaction, Western blotting, and reporter gene assays.

Main Results:

  • All seven miRNAs significantly increased the expression of the MET proto-oncogene, receptor tyrosine kinase (MET).
  • Specific miRNAs repressed known periodontitis risk genes (CPEB1, ABCA1, ATP6V1C1) and other genes (WASL, ENPP5, ARL6IP1, IDH1).
  • Key regulated pathways included cell cycle, integrin cell surface interaction, and interferon signaling.

Conclusions:

  • Gingival miRNAs orchestrate complex regulatory networks during inflammation, leading to increased MET expression.
  • MET signaling is crucial for mesenchymal cell migration and invasion in gingival tissue remodeling and homeostasis restoration post-inflammation.