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Related Concept Videos

Growth of Cartilage and Bone Tissue01:27

Growth of Cartilage and Bone Tissue

Chondrocytes form a temporary cartilaginous model by dividing and secreting a thick gel-like extracellular matrix. Once the chondrocytes undergo programmed cell death, osteoblasts enter the site of the cartilaginous model. The process of replacing the temporary cartilaginous model with bone in an ordered manner is called endochondral ossification. In endochondral ossification, not all of the cartilage is replaced by bone tissue. Some cartilage that performs a protective and supportive function...

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3D Hydrogel Scaffolds for Articular Chondrocyte Culture and Cartilage Generation
12:37

3D Hydrogel Scaffolds for Articular Chondrocyte Culture and Cartilage Generation

Published on: October 7, 2015

Gradients in articular cartilage and cartilage tissue engineering.

Wei Zhou1,2, Jinhang Jiang1, Yong-Chang Yao1

  • 1Department of Joint Surgery, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.

Journal of Biomaterials Science. Polymer Edition
|July 12, 2026
PubMed
Summary

Researchers are developing gradient-based scaffolds for articular cartilage (AC) repair, mimicking natural tissue properties. These advanced biomaterials aim to restore AC function by controlling cell behavior and matrix formation for effective tissue engineering.

Keywords:
Cartilagechondrocytesgradientgrowth factorsscaffoldtissue engineering

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Regenerative Medicine

Background:

  • Articular cartilage (AC) has complex natural gradients crucial for its function.
  • The avascular nature of AC presents significant challenges for defect repair and treatment.
  • Native AC gradients inspire gradient-based strategies in tissue engineering for AC repair.

Purpose of the Study:

  • To review the shift towards implementing gradient-based strategies in scaffold design for AC repair.
  • To highlight biomimetic approaches for engineering controllable gradients within scaffolds.
  • To provide a framework for developing next-generation biomimetic scaffolds for functional AC regeneration.

Main Methods:

  • Focus on engineering controllable gradients in scaffolds, including cell density, metabolic factors, matrix composition, mechanical properties, and growth factor concentrations.
  • Utilizing technologies like 3D bioprinting, oxygen-releasing biomaterials, perfusion bioreactors, and graded microsphere systems.
  • Integrating multiple interdependent gradients for enhanced scaffold performance.

Main Results:

  • Gradient-enabled scaffolds can guide zone-specific cellular responses and extracellular matrix formation.
  • These constructs aim to restore the native structure and function of articular cartilage.
  • Technologies enable precise spatial control over scaffold properties for biomimicry.

Conclusions:

  • Implementing gradient-based strategies in scaffold design is critical for AC repair.
  • A successful strategy integrates multiple interdependent gradients for functional AC regeneration.
  • This review offers a framework for clinical translation of advanced biomimetic scaffolds.