Osteogenic potential of human dental pulp stem cells cultured onto poly-epsilon-caprolactone/poly (rotaxane) scaffolds

Author(s)

Oliveira, N. K. ^[1] ; Salles, T. H. C. ^[2] ; Pedroni, A. C. ^[3] ; Miguita, L. ^[4] ; D'Avila, M. A. ^[2] ; Marques, M. M. ^[3] ; Deboni, M. C. Z. ^[1]

Affiliation

^[1] Univ Sao Paulo, Sch Dent, Oral Surg Dept, Av Prof Lineu Prestes 2227, Cidade Univ, BR-05508000 Sao Paulo, SP - Brazil

^[2] Univ Estadual Campinas, Sch Mech Engn, Dept Mfg & Mat Engn, UNICAMP, Rua Mendeleiev 200, BLOCO EE2 C Univ, BR-13083970 Campinas, SP - Brazil

^[3] Univ Sao Paulo, Sch Dent, Restorat Dent Dept, Av Prof Lineu Prestes 2227, Cidade Univ, BR-05508000 Sao Paulo, SP - Brazil

^[4] Univ Sao Paulo, Sch Dent, Stomatol Dept, Av Prof Lineu Prestes 2227, Cidade Univ, BR-05508000 Sao Paulo, SP - Brazil

• Document type: Journal article
• Source: Dental Materials; v. 35, n. 12, p. 1740-1749, DEC 2019.
• Web of Science Citations: 0

Abstract

Background. Bioengineering aims to develop innovative scaffolds to improve cellular activities for tissue regeneration. Objectives. To evaluate the biological behavior of human dental pulp stem cells (hDPSCs) seeded onto an experimental polymeric-based scaffold comprising poly-epsilon-caprolactone/poly (rotaxane). Material and methods. Adhesion, viability, and proliferation as well as alkaline phosphatase (ALP) activity, mineralized nodule formation (alizarin red assay), and expression of genes related to osteogenic differentiation, including ALP, type 1 collagen alpha 1 (COL1A1), Runt-related transcription factor (Runx-2), and osteocalcin (BGLAP/OCN), were evaluated in hDPSCs seeded onto polymeric scaffolds. Results. hDPSCs expressed typical levels of mesenchymal stem cell surface markers. Cell growth increased upon cultivation on polymeric blend scaffold and the cells gained osteoblast-like appearance. Fourteen days after seeding hDPSCs on the scaffolds, irrespective to the culture medium used (clonogenic or mineralization medium), the cells presented ALP activity higher than that of control cells grown in clonogenic medium. The cells cultivated in mineralization medium on the scaffold showed significantly higher expression of all genes than the control cells, except for BGLAP gene expression. At 21 days, the group cultivated on the scaffold and mineralization medium showed maximum level of mineralization. Significance. Poly-epsilon-caprolactone/poly (rotaxane) blend is noncytotoxic to hDPSCs and improved genomic and functional osteogenic differentiation. Thus, poly-epsilon-caprolactone/poly (rotaxane) blend may serve as a promising bioactive biomaterial for bone tissue bioengineering. (C) 2019 The Academy of Dental Materials. Published by Elsevier Inc. All rights reserved. (AU)

• FAPESP's process: 15/15055-0 - Dental pulp stem-cell viability, proliferation and osteogenic potential in PCL/Poli(rotaxane) membranes
• Grantee: Maria Cristina Zindel Deboni
• Support Opportunities: Regular Research Grants