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Chinese Journal of Stomatological Research(Electronic Edition) ›› 2016, Vol. 10 ›› Issue (02): 112-119. doi: 10.3877/cma.j.issn.1674-1366.2016.02.006

Special Issue:

• Basic Science Research • Previous Articles     Next Articles

Proteomic analysis related with pain of tooth movement in the anterior cingulate cortex

Zhuannong Zhao1, Chufeng Liu2, Xiaowei Sun1, Lingchao Zhang2, Yang Cao1,()   

  1. 1. Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510055, China
    2. Department of Orthodontics, Guangdong Provincial Stomatological Hospital, Affiliated Stomatological Hospital of Southern Medical University, Guangzhou 510280, China
  • Received:2015-11-12 Online:2016-04-01 Published:2016-04-01
  • Contact: Yang Cao
  • About author:
    Corresponding author: Cao Yang, Email:

Abstract:

Objective

To illucidate the proteomic expression in the anterior cingulate cortex (ACC) after experimental tooth movement and screening the significant proteins related with orthodontic pain, further investigate the role ACC plays in orthodontic pain.

Methods

In this research, 30 male Sprague-Dawley rats (250~ 300 g) were applied with orthodontic appliance. They were divided into two groups and selected for further experiment according to behavior assessment. After tandem mass tag (TMT) labeling, the protein extracted from ACC was detected with liquid chromatography-tandem mass spectrometry (LC-MS/MS) . Then bioinformatic analysis of the differentially expressed proteins was carried out, including Gene Ontology (GO) annotation, GO functional enrichment clustering, and Kyoto Encyclopedia of Genes and Genomes (KEGG) annotation and functional enrichment clustering.

Results

In total, 3374 proteins were identified and quantified, among which 109 proteins were significantly down-regulated, while 12 proteins were up-regulated. GO annotation and functional enrichment clustering showed the posttraumatic stress response and biochemical metabolism regulation happened in ACC following orthodontic tooth movement stress from three categories: biological process, cellular component and molecular function. KEGG annotation and functional enrichment clustering results showed that Arachidonic acid metabolism and JAK-STAT signaling pathway which were relevant to inflammatory pain were significantly down-regulated. 5 proteins were found closely related with the inflammary orthodontic pain, including prostaglandin E synthase (PGES) , glutathione peroxidase 1 (GPX1) , bifunctional epoxide hydrolase 2 (EPHX2) in the Arachidonic acid metabolism, as well as signal transducer and activator of transcription 1 (STAT1) , signal transducer and activator of transcription 2 (STAT2) in the JAK-STAT signaling pathway.

Conclusions

TMT technology was proved an effective method evaluating proteomic expression. ACC plays a significant role in the orthodontic pain. Arachidonic acid metabolism and JAK-STAT signaling pathway are possible critical signaling pathways involved in tooth movement.

Key words: Gyrus cinguli, anterior, Tooth movement, Pain, orthodontics, Proteomics

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