Differences in RUNX 2 and P2 RX 7 gene expression between mono‐ and coculture of human periodontal ligament cells and human osteoblasts under compressive force application

2019 ◽  
Vol 22 (3) ◽  
pp. 168-176 ◽  
Author(s):  
Jianwei Shi ◽  
Matthias Folwaczny ◽  
Andrea Wichelhaus ◽  
Uwe Baumert
2019 ◽  
Vol 89 (5) ◽  
pp. 804-811 ◽  
Author(s):  
Qian Li ◽  
Jianyun Zhang ◽  
Dawei Liu ◽  
Yunan Liu ◽  
Yanheng Zhou

ABSTRACT Objectives: To investigate whether Forkhead family transcription factors are responsive to mechanical force and the resulting influence on the osteoclast differentiation mediated by human periodontal ligament cells (PDLCs). Materials and Methods: A high-throughput RNA sequencing assay was performed in compressive force–stimulated and control human PDLCs. Alteration of FOXM1, a member of the Forkhead family transcription factors, was further confirmed by Western blotting and quantitative reverse-transcription polymerase chain reaction. Expression of FOXM1 was inhibited by either small interfering RNA (siRNA) transfection or addition of its specific inhibitor Siomycin A. Then, cells were exposed to compressive force and co-cultured with the murine macrophage cell line Raw264.7, followed by tartrate-resistant acid phosphatase staining assay. Expression changes of receptor activator of nuclear factor κB ligand (RANKL) and osteoprotegetin (OPG) caused by FOXM1 suppression were measured. Alkaline phosphatase (ALP) staining, ALP activity assay, and crystal violet staining assay were performed after FOXM1 inhibition. Results: FOXM1 transcription decreased after mechanical stimulation in PDLCs. Inhibition of FOXM1 promoted force-induced osteoclast differentiation of RAW264.7 and upregulated the RANKL/OPG ratio in PDLCs. Interference of FOXM1 led to promoted osteogenic differentiation but decreased proliferation of PDLCs. Conclusions: FOXM1 is a novel mechano-responsive gene in human PDLCs. Suppressing FOXM1 expression could promote osteoclast differentiation as well as RANKL/OPG in human PDLCs. FOXM1 also plays a role in controlling PDLC differentiation and proliferation capacity.


Data in Brief ◽  
2019 ◽  
Vol 26 ◽  
pp. 104553
Author(s):  
Jeeranan Manokawinchoke ◽  
Prasit Pavasant ◽  
Chenphop Sawangmake ◽  
Nuttapol Limjeerajarus ◽  
Chalida N. Limjeerajarus ◽  
...  

2015 ◽  
Vol 86 (1) ◽  
pp. 66-73 ◽  
Author(s):  
Mei Le Li ◽  
Jianru Yi ◽  
Yan Yang ◽  
Xuan Zhang ◽  
Wei Zheng ◽  
...  

ABSTRACT Objective:  To investigate the isolated and combined effects of compression and hypoxia on the osteoclastogenesis induced by periodontal ligament cells (PDLCs). Materials and Methods:  A periodontal ligament tissue model (PDLtm) was established by 3-D culturing human PDLCs on a thin sheet of poly lactic-co-glycolic acid scaffold. The PDLtm was treated with hypoxia and/or compression for 6, 24, or 72 hours. After that, a real-time polymerase chain reaction was used for gene expression analysis. The conditioned media were used for the coculture of osteoblast and osteoclast (OC) precursors; tartrate-resistant acid phosphatase staining was done to examine OC formation. Results:  Either compression or hypoxia alone significantly up-regulated the gene expression of pro-osteoclastogenic cytokines in the PDLtm and enhanced osteoclastogenesis in the cocultures, and the combination of the two had significantly stronger effects than either stimulation alone. In addition, comparing the two stimulants, we found that the osteoclastogenic property of the PDLCs peaked earlier (at 6 hours) in the compression group than in the hypoxia group (at 24 hours). Conclusions:  Both compressive force and hypoxia may take part in initiating osteoclastogenesis in orthodontic tooth movement and may have combinatory effects, which could update our concepts of the mechanisms involved in the initiation of bone resorption on the pressure side of the tooth in question.


Oral Diseases ◽  
2019 ◽  
Vol 25 (4) ◽  
pp. 1203-1213 ◽  
Author(s):  
Jaijam Suwanwela ◽  
Kanokporn Hansamuit ◽  
Jeeranan Manokawinchoke ◽  
Noppadol Sa‐Ard‐Iam ◽  
Rangsini Mahanonda ◽  
...  

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