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Updated: Jun 12, 2025
Isolation, Characterization and MicroRNA-based Genetic Modification of Human Dental Follicle Stem Cells
Published on: November 16, 2018
ARMCX3 regulates ROS signaling, affects neural differentiation and inflammatory microenvironment in dental pulp stem
1Department of Stomatology, Wuhan Ninth Hospital, Wuhan, Hubei, 430080, China.
Background:
The neural differentiation of dental pulp stem cells (DPSCs) exhibits great potential in the treatment of dental pulp repair and neurodegenerative diseases. However, the precise molecular mechanisms underlying this process remain unclear. This study was designed to reveal the roles and regulatory mechanisms of the armadillo repeat-containing X-linked 3 (ARMCX3) in neural differentiation and inflammatory microenvironment in human DPSCs (hDPSCs).
Methods:
We treated hDPSCs with porphyromonas gingivalis lipopolysaccharide (Pg-LPS) to simulate the inflammatory microenvironment. Then the lentiviral vectors were introduced to construct stable cell lines with ARMCX3 knockdown or overexpression. The expression of neural-specific markers, ARMCX3 and inflammation factors were estimated by immunofluorescence (IF), quantitative real-time polymerase chain reaction (qRT-PCR) and enzyme-linked immunosorbent assay (ELISA) assays. Additionally, we used IF assays and specific kits to investigate the regulatory role of ARMCX3 on reactive oxygen species (ROS) signaling. Moreover, a ROS inhibitor was utilized to verify whether ROS inhibition reversed the effects of ARMCX3 in Pg-LPS-treated hDPSCs.
Results:
This work illustrated that Pg-LPS treatment significantly enhanced ARMCX3 expression and inflammatory response, and inhibited neural differentiation in hDPSCs. ARMCX3 knockdown effectively accelerated neural differentiation and controlled inflammatory cytokines at a lower level in hDPSCs in the presence of Pg-LPS. Additionally, knockdown of ARMCX3 notably reduced ROS production and ROS inhibition effectively eliminated the roles of ARMCX3 overexpression in hDPSCs. Besides, all results were proved to be statistically significant.
Conclusion:
This investigation proved that ARMCX3 affected neural differentiation and inflammation microenvironment in hDPSCs at least partly by mediating ROS signal. These findings provided a new perspective on the mechanism of neural differentiation of hDPSCs and help to better explore the therapeutic schedule of pulpitis and neurodegenerative diseases.
Insights
Armadillo repeat-containing X-linked 3 (ARMCX3) influences neural differentiation in human dental pulp stem cells (hDPSCs) by mediating reactive oxygen species (ROS) signaling. This finding offers new therapeutic strategies for pulpitis and neurodegenerative diseases.
Area of Science:
- Stem Cell Biology
- Neuroscience
- Immunology
Background:
- Neural differentiation of dental pulp stem cells (DPSCs) holds promise for regenerative medicine and treating neurodegenerative conditions.
- The precise molecular mechanisms governing DPSC neural differentiation, particularly in inflammatory contexts, require elucidation.
- This study focuses on the role of armadillo repeat-containing X-linked 3 (ARMCX3) in human DPSCs (hDPSCs) during neural differentiation and inflammation.
Purpose of the Study:
- To investigate the function and regulatory mechanisms of ARMCX3 in hDPSCs.
- To determine ARMCX3's role in neural differentiation and the inflammatory microenvironment of hDPSCs.
- To explore the involvement of reactive oxygen species (ROS) signaling in ARMCX3-mediated effects.
Main Methods:
- hDPSCs were exposed to Porphyromonas gingivalis lipopolysaccharide (Pg-LPS) to mimic inflammation.
- Lentiviral vectors were used to create stable cell lines with ARMCX3 knockdown or overexpression.
- Neural markers, ARMCX3, and inflammatory factors were quantified using immunofluorescence, qRT-PCR, and ELISA; ROS levels were assessed, and a ROS inhibitor was employed.
Main Results:
- Pg-LPS treatment increased ARMCX3 expression, heightened inflammation, and impaired neural differentiation in hDPSCs.
- ARMCX3 knockdown promoted neural differentiation and reduced inflammatory cytokine levels in Pg-LPS-treated hDPSCs.
- ARMCX3 knockdown decreased ROS production, and ROS inhibition counteracted the effects of ARMCX3 overexpression.
Conclusions:
- ARMCX3 modulates neural differentiation and the inflammatory microenvironment in hDPSCs, at least partially through ROS signaling.
- These findings provide novel insights into the mechanisms of hDPSC neural differentiation.
- The study suggests potential therapeutic targets for pulpitis and neurodegenerative diseases.
