title: The Role of Transient Receptor Potential Cation Channel, Subfamily C, Member 1 in the Odontoblast-like Differentiation of Human Dental Pulp Cells.
abstract: BACKGROUND
  Calcium ions (Ca2+) actively participate in reparative dentin formation by promoting cellular proliferation and differentiation of human dental pulp cells (hDPCs). Transient receptor potential cation channel, subfamily C, member 1 (TRPC1) activates Ca2+entry upon store depletion in a variety of cell types. However, the function of TRPC1 in hDPCs has not been reported. Therefore, we aimed to analyze the role of TRPC1 in hDPCs undergoing odontoblast-like differentiation.
  
  
  METHODS
  Immunohistochemical staining was used to determine the distribution of TRPC1 in pulp tissues. Western blot analysis was used to detect the protein level of TRPC1 in the odontoblast-like differentiation of hDPCs. Knockdown of TRPC1 was performed with an adenoviral vector to evaluate the role of TRPC1 in hDPCs during odontoblast-like differentiation.
  
  
  RESULTS
  The results showed that TRPC1 was highly expressed in the cytoplasm of dental pulp cells, especially in the odontoblast layer of the healthy pulp. Moreover, the protein level of TRPC1 increased in a time-dependent manner during the odontoblast-like differentiation of hDPCs. Importantly, knockdown of TRPC1 attenuated the process of odontoblast-like differentiation as indicated by the reduction in mineralized nodules and the down-regulation of dentin sialophosphoprotein and dentin matrix protein 1. Moreover, knockdown of TRPC1 decreased Ca2+entry to the cytoplasm of hDPCs.
  
  
  CONCLUSIONS
  Our data indicated a pivotal role of TRPC1 in the odontoblastlike differentiation of hDPCs, which may be a therapeutic target to enhance reparative dentin formation.
authors.affiliation: Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, China.
authors.forename: Zhi
authors.initials: Z
authors.lastname: Song
authors.affiliation: Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, China.
authors.forename: Lingling
authors.initials: L
authors.lastname: Chen
authors.affiliation: Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, China.
authors.forename: Jia
authors.initials: J
authors.lastname: Guo
authors.affiliation: Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Qin
authors.affiliation: Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, China.
authors.forename: Runfu
authors.initials: R
authors.lastname: Wang
authors.affiliation: Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, China.
authors.forename: Shuheng
authors.initials: S
authors.lastname: Huang
authors.affiliation: Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, China.
authors.forename: Xiaoting
authors.initials: X
authors.lastname: Yang
authors.affiliation: Department of Stomatology, Hainan General Hospital, Haikou, Hainan, China. Electronic address: yaguangtian@163.com.
authors.forename: Yaguang
authors.initials: Y
authors.lastname: Tian
authors.affiliation: Department of Operative Dentistry and Endodontics, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong, China. Electronic address: linzhm@mail.sysu.edu.cn.
authors.forename: Zhengmei
authors.initials: Z
authors.lastname: Lin
mesh_terms: D000293:Adolescent; D000328:Adult; D015153:Blotting, Western; D002118:Calcium / Q000378:metabolism; D002454:Cell Differentiation / Q000502:physiology*; D002478:Cells, Cultured; D003782:Dental Pulp / Q000166:cytology* / Q000502:physiology; D006801:Humans; D009804:Odontoblasts / Q000502:physiology*; D060888:Real-Time Polymerase Chain Reaction; D050052:TRPC Cation Channels / Q000502:physiology*; D055815:Young Adult
chemical_list: D050052:TRPC Cation Channels; C096351:transient receptor potential cation channel, subfamily C, member 1; D002118:Calcium
keywords: Calcium; cell differentiation; odontoblast; reparative dentin formation; transient receptor potential cation channel, subfamily C, member 1