| Summary: | Hui Chen,1,2 Yan Dai,1,3 Jing Cui,4 Xiaochun Yin,2 Wei Feng,2 Meiyi lv,1,5 Hui Song1 1Department of VIP Center, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, 250012, Shandong, People’s Republic of China; 2Department of Endodontics, Jinan Stomatological Hospital, Jinan, Shandong Province, People’s Republic of China; 3Department of Oral and Maxillofacial Surgery, Zibo Central Hospital, Zibo, Shandong Province, People’s Republic of China; 4Department of Oral and Maxillofacial Surgery, Jinan Stomatological Hospital, Jinan, Shandong Province, People’s Republic of China; 5Pediatric Dentistry, Jinan Stomatological Hospital, Jinan, Shandong Province, People’s Republic of ChinaCorrespondence: Hui SongDepartment of VIP Center, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan, 250012, Shandong, People’s Republic of ChinaTel +86 53188382923Fax +86 53188382923Email songhui@sdu.edu.cnPurpose: Limited intrinsic regeneration capacity following bone destruction remains a significant medical problem. Multiple regulatory effects of carbon monoxide releasing molecule-3 (CORM-3) have been reported. The aim of this study was to investigate the effect of CORM-3 on the osteogenic differentiation of human periodontal ligament stem cells (hPDLSCs) during osteogenesis.Patients and Methods: hPDLSCs obtained from healthy periodontal ligament tissues were cultured and identified with specific surface antigens by flow cytometry. Effect of CORM-3 on the proliferation of hPDLSCs was determined by CCK-8 assay. Alizarin red staining and alkaline phosphatase (ALP) activity were used to assess the osteogenic differentiation of hPDLSCs. Real-time quantitative polymerase chain reaction (RT-qPCR) and Western blot analysis were used to detect the expression of the indicated genes. Critical-sized skull defect was made in Balb/c-nude mice, microcomputed tomography (Micro-CT) and Masson trichrome staining were used to assess the new bone regeneration in mice.Results: CORM-3 (400 μmol/l) significantly promoted the proliferation of hPDLSCs. CORM-3 pretreatment not only notably enhanced the mRNA and protein expression of osteo-specific marker OPN, Runx2 and ALP, but also increased mineral deposition and ALP activity by the release of CO on day 3, 7 and 14 (P< 0.05). Degassed CORM-3 did not show the same effect as CORM-3. In animal model, application of CORM-3 with hPDLSCs transplantation highly increased new bone formation in skull defect region.Conclusion: CORM-3 promoted osteogenic differentiation of hPDLSCs, and increased hPDLSCs-induced new bone formation in mice with critical-sized skull defect, which suggests an efficient and promising strategy in the treatment of disease with bone defect.Keywords: CORM-3, hPDLSC, osteo-specific marker, micro-computed tomography, osteopontin, Runx2
|
|---|