Volume 13, Issue 11 pp. 2055-2066
RESEARCH ARTICLE

Effect of adiponectin secreted from adipose-derived stem cells on bone-fat balance and bone defect healing

Shimao Yang

Shimao Yang

State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China

Department of Oral and Maxillofacial Surgery, Jinan Stomatology Hospital, Jinan, China

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Hanghang Liu

Hanghang Liu

State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China

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Yao Liu

Yao Liu

State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China

Division of Oral Biology, Tufts University School of Dental Medicine, Boston, MA

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Li Liu

Li Liu

State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China

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Wenmei Zhang

Wenmei Zhang

Department of Oral and Maxillofacial Surgery, Jinan Stomatology Hospital, Jinan, China

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En Luo

Corresponding Author

En Luo

State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, China

Correspondence

En Luo, State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Section 3# 14 Renminnan Road, Chengdu, China.

Email: [email protected]

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First published: 18 June 2019
Citations: 25
Yang Shimao and Liu Hanghang contributed equally to this study.

Abstract

The efficacy of adiponectin (APN) in regulating bone metabolism remains controversial. This study aimed to investigate the role of APN secreted from adipose-derived stem cells on adipogenesis and osteogenesis. Human APN gene was transfected via recombinant adenovirus into adipose derived stem cells (ASCs) in vitro and were cocultured with bone marrow mesenchymal stem cells (BMSCs) in using a transwell chamber. Adipogenesis was inhibited in APN-transfected ASCs; in BMSCs, adipogenesis was inhibited, but osteogenesis was promoted in coculture with APN-transfected ASCs. Next, the same adenovirus construct was transfected into the abdominal adipose tissue of a Sprague Dawley rat in vivo, and then a tibia defect was established in the same rat. We confirmed there was higher gene and protein expression of APN in ASCs and the abdominal adipose tissue of these rat models. Development of adipocytes in abdominal adipose tissue was suppressed, and less new bone was formed in the bone defect area. In conclusion, APN secreted from ASCs could directly inhibit adipogenesis in ASCs and BMSCs and promote osteogenesis in the latter. However, APN overexpression in adipose tissue was inversely associated with bone formation in tibia defects potentially due to decreased levels of circulating bone-activating hormones.

CONFLICT OF INTEREST

All authors state that they have no conflict of interest.

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