[Dopamine Modified and Cartilage Derived Morphogenetic Protein 1 Laden Polycaprolactone-hydroxyapatite Composite Scaffolds Fabricated by Three-dimensional Printing Improve Chondrogenic Differentiation of Human Bone Marrow Mesenchymal Stem Cells]

Overview

Journal Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi

Specialty General Surgery

Date 2018 May 29

PMID 29806415

Citations 1

Authors

Yan Xu

Bo Wei

Jin Zhou

Qingqiang Yao

Liming Wang

Jian Na

Affiliations

Soon will be listed here.

Abstract

Objective: To prepare dopamine modified and cartilage derived morphogenetic protein 1 (CDMP1) laden polycaprolactone-hydroxyapatite (PCL-HA) composite scaffolds by three-dimensional (3D) printing and evaluate the effect of 3D scaffolds on chondrogenic differentiation of human bone marrow mesenchymal stem cells (hBMSCs).

Methods: A dimensional porous PCL-HA scaffold was fabricated by 3D printing. Dopamine was used to modify the surface of PCL-HA and then CDMP-1 was loaded into scaffolds. The surface microstructure was observed by scanning electron microscope (SEM) and porosity and water static contact angle were also detected. The cytological experiment were randomly divided into 3 groups: group A (PCL-HA scaffolds), group B (dopamine modified PCL-HA scaffolds), and group C (dopamine modified and CDMP-1 laden PCL-HA scaffolds). The hBMSCs were seeded into three scaffolds, in chondrogenic culture conditions, the cell adhesive rate, the cell proliferation (MTT assay), and cell activity (Live-Dead staining) were analyzed; and the gene expressions of collagen type Ⅱ and Aggrecan were detected by real-time fluorescent quantitative PCR.

Results: The scaffolds in 3 groups were all showed a cross-linked and pore interconnected with pore size of 400-500 μm, porosity of 56%, and fiber orientation of 0°/90°. For dopamine modification, the scaffolds in groups B and C were dark brown while in group A was white. Similarly, water static contact angle was from 76° of group A to 0° of groups B and C. After cultured for 24 hours, the cell adhesion rate of groups A, B, and C was 34.3%±3.5%, 48.3%±1.5%, and 57.4%±2.5% respectively, showing significant differences between groups ( <0.05). Live/Dead staining showed good cell activity of cells in 3 groups. MTT test showed that hBMSCs proliferated well in 3 groups and the absorbance ( ) value was increased with time. The value in group C was significantly higher than that in groups B and A, and in group B than in group A after cultured for 4, 7, 14, and 21 days, all showing significant differences ( <0.05). The mRNA relative expression of collagen type Ⅱ and Aggrecan increased gradually with time in 3 groups. The mRNA relative expression of collagen type Ⅱafter cultured for 7, 14, and 21 days, and the mRNA relative expression of Aggrecan after cultured for 14 and 21 days in group C were significantly higher than those in groups A and B, and in group B than in group A, all showing significant differences ( <0.05).

Conclusion: Co-culture of dopamine modified and CDMP1 laden PCL-HA scaffolds and hBMSCs can promote hBMSCs' adhesion, proliferation, and chondrogenic differentiation.

Citing Articles

Current Insights Into the Maintenance of Structure and Function of Intervertebral Disc: A Review of the Regulatory Role of Growth and Differentiation Factor-5.

Lv B, Gan W, Cheng Z, Wu J, Chen Y, Zhao K Front Pharmacol. 2022; 13:842525.

PMID: 35754493 PMC: 9213660. DOI: 10.3389/fphar.2022.842525.

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