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Updated: May 22, 2026

Isolation, Culture, and Characterization of Dental Pulp Stem Cells from Human Deciduous and Permanent Teeth
Published on: May 17, 2024
Increased autophagic activity in senescent human dental pulp cells
1Department of General Dentistry, Shanghai 9th People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology. Shanghai, China.
Autophagic activity, indicated by increased autophagic proteins and vacuoles, is elevated in senescent dental pulp cells (DPCs). This suggests autophagy plays a role in dental pulp aging mechanisms.
Area of Science:
- Cell Biology
- Dental Research
- Aging Mechanisms
Background:
- Dental pulp cells (DPCs) undergo senescence with age.
- The precise mechanisms of dental pulp aging are not fully understood.
Purpose of the Study:
- To investigate the role of autophagy in dental pulp cell (DPC) senescence.
- To elucidate the mechanisms underlying dental pulp aging.
Main Methods:
- Human DPCs were cultured and induced into senescence.
- Senescence was assessed using Senescence-β-galactosidase (SA-β-gal) staining.
- Autophagic activity was analyzed via Western blot for autophagy proteins (LC3, Beclin 1) and transmission electron microscopy (TEM) for autophagic vacuoles.
Main Results:
- Senescent DPCs exhibited significantly higher SA-β-gal staining compared to young cells.
- Expression of autophagy-related proteins (LC3, Beclin 1) was notably increased in senescent DPCs.
- TEM revealed a greater number of autophagic vacuoles in senescent DPCs.
Conclusions:
- Autophagic activity is upregulated in senescent dental pulp cells.
- These findings suggest that autophagy is involved in the senescence of DPCs and may contribute to dental pulp aging.
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