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Small molecules efficiently reprogram apical papilla stem cells into neuron-like cells.

Qixin Chen1,2, Changyong Yuan2, Shan Jiang1

  • 1Restorative Dental Sciences, Endodontology, Faculty of Dentistry, The University of Hong Kong, Hong Kong 999077, SAR, P.R. China.

Experimental and Therapeutic Medicine
|April 14, 2021
PubMed
Summary
This summary is machine-generated.

Small molecules effectively reprogram stem cells from the apical papilla (SCAP) into neural progenitor cells within three days. These cells further differentiate into functional neuron-like cells, offering promise for neural tissue regeneration.

Keywords:
apical papilladifferentiationneurogenesissmall moleculestem cells

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Area of Science:

  • Regenerative Medicine
  • Neuroscience
  • Stem Cell Biology

Background:

  • Stem cell therapy holds potential for neural tissue regeneration.
  • Small molecule cocktails can enhance neurogenic differentiation in dental stem cells.

Purpose of the Study:

  • To investigate the early phase of small molecule-induced neurogenic differentiation of stem cells from the apical papilla (SCAP).
  • To assess the impact of small molecules on SCAP morphology, marker expression, proliferation, and functional neuronal activity.

Main Methods:

  • SCAP were cultured with or without small molecules in neural induction medium.
  • Cell morphology, neural progenitor markers (Nestin, Pax6, Sox2), and neuronal markers (NFM, NeuN, MAP2) were analyzed via western blotting and immunocytochemistry.
  • Gene expression (NFM, MAP2) and proliferation were assessed using RT-qPCR and CCK-8 assays, respectively.
  • Electrophysiological analysis was performed to evaluate functional neuronal activity.

Main Results:

  • Small molecules altered SCAP morphology within 30 minutes.
  • Neural progenitor marker expression (Nestin, Pax6, Sox2) increased by day 3 and decreased by day 7.
  • Neuronal marker protein and gene expression (NFM, NeuN, MAP2) significantly increased by days 5-7.
  • SCAP proliferation ceased after 5 days, and electrophysiological analysis confirmed functional neuronal activity in treated cells.

Conclusions:

  • Small molecules reprogram SCAP into neural progenitor cells within 3 days.
  • Further differentiation into functional neuron-like cells occurs within 7 days.
  • This approach shows promise for neural tissue regeneration therapies.