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Arch Oral Biol. 2018 Apr;88:60-66. doi: 10.1016/j.archoralbio.2018.01.018.

Schisandrin C enhances odontoblastic differentiation through autophagy and mitochondrial biogenesis in human dental pulp cells.

Author information

1
Department of Oral Biochemistry and Institute of Oral Bioscience, BK21 Program, School of Dentistry, Chonbuk National University, Jeonju, Republic of Korea.
2
Department of Herbal Crop Research, National Institute of Horticultural & Herbal Science, Eumseong, Republic of Korea.
3
Department of Oral Biochemistry and Institute of Oral Bioscience, BK21 Program, School of Dentistry, Chonbuk National University, Jeonju, Republic of Korea. Electronic address: yihokn@chonbuk.ac.kr.

Abstract

OBJECTIVE:

To investigate the role of Schisandrin C in odontoblastic differentiation, and its relations between autophagy and mitochondrial biogenesis in human dental pulp cells (HPDCs).

DESIGN:

Fresh third molars were used, and cultured for HDPCs. Western blotting technique, Alizarin red S staining, alkaline phosphatase (ALP) activity, and confocal microscopy were used to detect autophagy, mitochondrial biogenesis, and odontoblastic differentiation. To understand the mechanism of Schisandrin C, the HDPCs were treated with lipopolysaccharide (LPS), autophagy and heme oxygenase-1 (HO-1) inhibitors: 3-Methyladenine (3-MA) and Zinc protoporphyrin IX (ZnPP), respectively.

RESULTS:

LPS decreased the expression of autophagy molecules [autophagy protein 5 (ATG-5), beclin-1, and microtubule-associated protein 1A/1B light chain 3 (LC3-I/II)] and mitochondrial biogenesis molecules [heme oxygenase-1 (HO-1) and peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α)], and disrupted odontoblastic differentiation. The down-regulation of autophagy and mitochondrial biogenesis with 3-MA and ZnPP inhibited odontoblastic differentiation. However, Schisandrin C restored the expression of all the above molecules, even with LPS and inhibitor treatment. This result demonstrates that autophagy and mitochondrial biogenesis plays an essential role in odontoblastic differentiation, and Schisandrin C activates these systems to promote odontoblastic differentiation of HDPCs.

CONCLUSION:

Schisandrin C has potential characters to regulate odontoblastic differentiation, and may be recommended for use as a compound for pulp homeostasis.

KEYWORDS:

ATG-5; Anti-inflammation; Anti-oxidants; Dental pulp homeostasis; HO-1; PGC-1α

[Indexed for MEDLINE]

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