3D-Printed Dual-Lineage Inductive Approach for Efficient Osteochondral Regeneration.

Ouyang X., Li R., Sun W., Gu Y., Lin J., Fan Z., Yao X., Gu H., Xie C., Li W., Yang Y., Yan Y., Wei W., Wu B., Chen X., He B., Zhang S., Hong Y., Cui Z., Wang X.

Osteochondral defect regeneration is challenging due to the mismatch between cartilage and subchondral bone. We developed a functionalized scaffold replicating the natural architecture, biochemical and biomechanical environment of both tissues to promote concurrent regeneration. Our bilayered, zone-specific scaffold combines tailored materials for each tissue type: gelatin methacryloyl (GelMA), modified hyaluronic acid, and umbilical cord-derived extracellular matrix (ECM) for the cartilage layer; GelMA, placenta-derived ECM, and nano amorphous calcium phosphate for the osseous layer. Using 3D digital light-processing printing, we constructed the scaffold with spatially distributed biochemical and biomechanical signaling. This approach created dual chondro-/osteogenic microenvironments facilitating bone marrow mesenchymal stem cell differentiation. In vivo studies demonstrated concurrent regeneration of cartilage and subchondral bone tissues with robust integration. This 3D-printed biomimetic scaffold, featuring dual-lineage inductive properties, shows promising potential for efficient osteochondral regeneration and addresses complex tissue engineering requirements.

DOI

10.1021/acsami.4c14063

Type

Journal article

Publication Date

2025-04-09T00:00:00+00:00

Volume

17

Pages

20613 - 20627

Total pages

14

Keywords

DLP 3D printing, bilineage differentiation, biochemical cues, matrix stiffness, osteochondral repair, tissue-derived ECM, Printing, Three-Dimensional, Tissue Scaffolds, Animals, Mesenchymal Stem Cells, Tissue Engineering, Humans, Cell Differentiation, Osteogenesis, Extracellular Matrix, Bone Regeneration, Gelatin, Chondrogenesis, Hyaluronic Acid, Cartilage, Mice, Methacrylates

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