Effect of endoplasmic reticulum stress on the osteogenic differentiation of periodontal ligament cells under continuous static pressure
10.12016/j.issn.2096-1456.2019.08.002
- Author:
REN Qingyuan
1
;
HE Wulin
1
;
WANG Qing
1
;
CHU Hongxing
2
;
LIN Haiyan
1
Author Information
1. Department of Orthodontics, Stomatological Hospital,Southern Medical University
2. Department of Periodontal Implants, Stomatological Hospital,Southern Medical University
- Publication Type:Journal Article
- Keywords:
human periodontal ligament cells;
PERK-eIF2α-ATF4 pathway;
endoplasmic reticulum stress;
continuously compressive pressure;
osteogenic differentiation
- From:
Journal of Prevention and Treatment for Stomatological Diseases
2019;27(8):485-489
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the effect of continuous static pressure on the endoplasmic reticulum of human periodontal ligament cells (hPDLCs) and the mechanism of osteogenic differentiation.
Methods:hPDLCs cultured in vitro were subjected to 1 g/cm 2 of continuous compressive pressure (CCP) by custom-made, round, glass panes for 0, 2, 4, and 6 h, respectively. Alkaline phosphatase staining was used to detect osteogenic differentiation, and real-time quantitative PCR was used to detect the expression of protein kinase receptor-like ER kinase (PERK), eukaryotic translation initiation factor 2α (eIF2α), and transcription activation factor 4 (ATF-4). The 0 h loading group was the control group.
Results:After CCP treatment, the alkaline phosphatase staining of hPDLCs was blue-violet and significantly stronger than that of cells in the control group. The expression levels of PERK and ATF4 in the hPDLCs after CCP treatment were higher than those of cells in the control group (P < 0.05) and increased over time (P < 0.05). The expression of eIF2α was lower in the experimental groups than in the control group (P < 0.05) and decreased over time (P < 0.05).
Conclusion :Mechanical stimulation can activate ERS in hPDLCs, leading to enhanced PERK-eIF2α-ATF4 signaling and inducing osteogenic differentiation.
- Full text:持续静压力作用下内质网应激对牙周膜细胞成骨分化的影响.pdf
