1
|
Ferraro W, Civilleri A, Gögele C, Carbone C, Vitrano I, Carfi Pavia F, Brucato V, La Carrubba V, Werner C, Schäfer-Eckart K, Schulze-Tanzil G. The Phenotype of Mesenchymal Stromal Cell and Articular Chondrocyte Cocultures on Highly Porous Bilayer Poly-L-Lactic Acid Scaffolds Produced by Thermally Induced Phase Separation and Supplemented with Hydroxyapatite. Polymers (Basel) 2024; 16:331. [PMID: 38337220 DOI: 10.3390/polym16030331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/15/2024] [Accepted: 01/21/2024] [Indexed: 02/12/2024] Open
Abstract
Bilayer scaffolds could provide a suitable topology for osteochondral defect repair mimicking cartilage and subchondral bone architecture. Hence, they could facilitate the chondro- and osteogenic lineage commitment of multipotent mesenchymal stromal cells (MSCs) with hydroxyapatite, the major inorganic component of bone, stimulating osteogenesis. Highly porous poly-L-lactic acid (PLLA) scaffolds with two layers of different pore sizes (100 and 250 µm) and hydroxyapatite (HA) supplementation were established by thermally induced phase separation (TIPS) to study growth and osteogenesis of human (h) MSCs. The topology of the scaffold prepared via TIPS was characterized using scanning electron microscopy (SEM), a microCT scan, pycnometry and gravimetric analysis. HMSCs and porcine articular chondrocytes (pACs) were seeded on the PLLA scaffolds without/with 5% HA for 1 and 7 days, and the cell attachment, survival, morphology, proliferation and gene expression of cartilage- and bone-related markers as well as sulfated glycosaminoglycan (sGAG) synthesis were monitored. All scaffold variants were cytocompatible, and hMSCs survived for the whole culture period. Cross-sections revealed living cells that also colonized inner scaffold areas, producing an extracellular matrix (ECM) containing sGAGs. The gene expression of cartilage and bone markers could be detected. HA represents a cytocompatible supplement in PLLA composite scaffolds intended for osteochondral defects.
Collapse
Affiliation(s)
- Wally Ferraro
- Engineering Department, Università degli Studi di Palermo, V.le delle Scienze Building 6, 90128 Palermo, Italy
| | - Aurelio Civilleri
- Engineering Department, Università degli Studi di Palermo, V.le delle Scienze Building 6, 90128 Palermo, Italy
| | - Clemens Gögele
- Institute of Anatomy and Cell Biology, Paracelsus Medical University, Nuremberg and Salzburg, Prof. Ernst Nathan Str. 1, 90419 Nuremberg, Germany
| | - Camilla Carbone
- Engineering Department, Università degli Studi di Palermo, V.le delle Scienze Building 6, 90128 Palermo, Italy
| | - Ilenia Vitrano
- Engineering Department, Università degli Studi di Palermo, V.le delle Scienze Building 6, 90128 Palermo, Italy
| | - Francesco Carfi Pavia
- Engineering Department, Università degli Studi di Palermo, V.le delle Scienze Building 6, 90128 Palermo, Italy
| | - Valerio Brucato
- Engineering Department, Università degli Studi di Palermo, V.le delle Scienze Building 6, 90128 Palermo, Italy
| | - Vincenzo La Carrubba
- Engineering Department, Università degli Studi di Palermo, V.le delle Scienze Building 6, 90128 Palermo, Italy
| | - Christian Werner
- Institute of Anatomy and Cell Biology, Paracelsus Medical University, Nuremberg and Salzburg, Prof. Ernst Nathan Str. 1, 90419 Nuremberg, Germany
| | | | - Gundula Schulze-Tanzil
- Institute of Anatomy and Cell Biology, Paracelsus Medical University, Nuremberg and Salzburg, Prof. Ernst Nathan Str. 1, 90419 Nuremberg, Germany
| |
Collapse
|