[Effect of elastic stress on expression of corebinding factor a 1 mRNA in human periodontal ligament cells in vitro].
OBJECTIVE
To investigate the osteoblast-like characteristics of human periodontal ligament cells affected by elastic stress in vitro, and the role of corebinding factor a 1 (cbfa1) in alveolar bone formation during orthodontic tooth movement.


METHODS
Rat dig-labeled cbfa1 cDNA probe was prepared from SD rat osteoblasts cultured in vitro. Human periodontal ligament cells were cultured on the elastic bottom plate and stimulated by elastic stress using mechanical loading system for cultured cells in vitro. The expression of cbfa1 mRNA was detected by in situ hybridization method.


RESULTS
Cbfa1 mRNA express in human periodontal ligament cells stimulated by elastic stress and did not express in normal human periodontal ligament cells.


CONCLUSIONS
It is suggested that elastic stress plays a role in the differentiation process from human periodontal ligament cells to osteoblast-like cells. Cbfa1 is a transcription factor in alveolar bone remodeling during orthodontic tooth movement.
Zhang
Yun-fei
YF
Department of Orthodontics, College of Stomatology, The Fourth Military Medical University, Xi'an 710032, China.
Duan
Yin-zhong
YZ
Wang
Ning
N
Yu
Qing
Q
Feng
Xue
X
D000293:Adolescent; D000818:Animals; D002478:Cells, Cultured; D002648:Child; D050657:Core Binding Factor alpha Subunits; D004268:DNA-Binding Proteins / Q000235:genetics*; D004548:Elasticity; D006801:Humans; D010513:Periodontal Ligament / Q000166:cytology / Q000378:metabolism*; D012333:RNA, Messenger / Q000032:analysis*; D051381:Rats; D014157:Transcription Factors / Q000235:genetics*
D050657:Core Binding Factor alpha Subunits; D004268:DNA-Binding Proteins; D012333:RNA, Messenger; D014157:Transcription Factors; C406688:core binding factor alpha