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Updated: Dec 12, 2025

Stimulation of Notch Signaling in Mouse Osteoclast Precursors
08:01

Stimulation of Notch Signaling in Mouse Osteoclast Precursors

Published on: February 28, 2017

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The Toll-like receptor ligand, CpG oligodeoxynucleotides, regulate proliferation and osteogenic differentiation of

Wenwen Yu1,2, Yi Zheng1, Hongyan Li1

  • 1Department of Periodontics, School and hospital of Stomatology, Jilin University, 1500 Qinghua Road, Changchun, Jilin, 130021, China.

Journal of Orthopaedic Surgery and Research
|August 16, 2020
PubMed
Abstract

Insights

CpG oligodeoxynucleotides (ODNs) promote MC3T3 cell proliferation and osteogenic differentiation, showing potential for bone regeneration therapies. Specific CpG ODNs enhance key gene expression for bone formation.

Area of Science:

  • Biomaterials Science
  • Cell Biology
  • Molecular Medicine

Background:

  • Investigating the role of CpG oligodeoxynucleotides (ODNs) in regulating cellular processes.
  • Focusing on the impact of CpG ODNs on MC3T3 cell proliferation and osteogenic differentiation.

Purpose of the Study:

  • To explore how CpG ODNs influence the proliferation and osteogenic differentiation of MC3T3 cells.
  • To identify specific CpG ODNs with significant effects on bone cell development.

Main Methods:

  • Utilized laser co-focusing and flow cytometry for CpG ODN uptake analysis.
  • Employed MTT assays and alkaline phosphatase activity measurements to assess proliferation and differentiation.
  • Conducted quantitative real-time PCR (qRT-PCR) and western blotting to analyze gene and protein expression.

Main Results:

  • CpG ODN 2006 efficiently entered MC3T3 cells and localized in the cytoplasm.
  • CpG ODNs initially promoted cell proliferation and differentiation, with effects varying over time.
  • All tested CpG ODNs upregulated osteogenic differentiation genes (SP7, OCN) at the mRNA level.
  • Specific CpG ODNs (BW001, FC001) increased P27Kip1 and Runx2 protein expression while decreasing cyclin D1.

Conclusions:

  • Selected CpG ODNs demonstrate potential as a therapeutic strategy for bone regeneration.
  • CpG ODNs may offer a novel approach for treating conditions like periodontitis-related bone loss.
Keywords:
CpG ODNDifferentiationOsteoblastPeriodontitisProliferation

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