International Journal of Medical Sciences

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17 October 2017

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Int J Med Sci 2015; 12(11):881-890. doi:10.7150/ijms.13172

Research Paper

FOXO1 Is Involved in the Effects of Cigarette Smoke Extract on Osteoblastic Differentiation of Cultured Human Periosteum-derived Cells

Iel-Yong Sung1, Bong-Chan Park1, Young-Sool Hah2, Hee-Young Cho2, Jeong-Won Yun2, Bong-Wook Park3, Young-Hoon Kang3, Ho-Cheol Kim4, Sun-Chul Hwang5, Gyu-Jin Rho6, Uk-Kyu Kim7, Dong Kyun Woo8, Se-Heang Oh9, June-Ho Byun3✉

1. Department of Oral and Maxillofacial Surgery, College of Medicine, Ulsan University, Ulsan, Republic of Korea
2. Clinical Research Institute of Gyeongsang National University Hospital, Jinju, Republic of Korea
3. Department of Oral and Maxillofacial Surgery, Gyeongsang National University School of Medicine and Gyeongsang National University Hospital, Institute of Health Sciences, Gyeongsang National University, Jinju, Republic of Korea
4. Department of Internal Medicine, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
5. Department of Orthopaedic Surgery, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
6. OBS/Theriogenology and Biotechnology, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
7. Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University, Yangsan, South Korea
8. College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju, Republic of Korea
9. Department of Nanobiomedical Science, Dankook university, Cheonan, Republic of Korea

Abstract

Cigarette smoke is associated with delayed fracture healing, alterations in mineral content, and osteoporosis, however, its effects on osteoblastic differentiation of osteoprogenitor cells are not fully understood. In the present study, we examined the effects of cigarette smoke extract (CSE) on osteoblastic differentiation of cultured human periosteum-derived cells. We found that CSE inhibited alkaline phosphatase (ALP) activity, mineralization and Runx2 transactivation of the periosteum-derived cells. Nucleofection of RUNX2 into the periosteum-derived cells increased expression of endogenous osteocalcin (OC) and ALP genes in osteogenic induction medium and increased OC expression in non-osteogenic medium. Treatment of the periosteum-derived cells with CSE resulted in decreased phosphorylation of AKT and forkhead box protein O1 (FOXO1). The AKT phosphorylation-resistant mutant, FOXO1-A3, inhibited transcriptional activity of RUNX2 in the periosteum-derived cells. The current study suggests one mechanism by which CSE exposure leads to inhibition of osteoblastic differentiation of cultured human periosteum-derived cells.

Keywords: Periosteum-derived cells, Osteoblastic differentiation, RUNX2 activity, FOXO1

This is an open access article distributed under the terms of the Creative Commons Attribution (CC BY-NC) License. See http://ivyspring.com/terms for full terms and conditions.
How to cite this article:
Sung IY, Park BC, Hah YS, Cho HY, Yun JW, Park BW, Kang YH, Kim HC, Hwang SC, Rho GJ, Kim UK, Woo DK, Oh SH, Byun JH. FOXO1 Is Involved in the Effects of Cigarette Smoke Extract on Osteoblastic Differentiation of Cultured Human Periosteum-derived Cells. Int J Med Sci 2015; 12(11):881-890. doi:10.7150/ijms.13172. Available from http://www.medsci.org/v12p0881.htm