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Related Concept Videos

The Bone Matrix01:18

The Bone Matrix

Bone contains a relatively small number of cells entrenched in a matrix of collagen fibers that provide an adherent surface for inorganic salt crystals. Both components of the matrix, organic and inorganic, contribute to the unusual properties of bone. Without collagen, bones would be brittle and shatter easily. Without mineral crystals, bones would flex and provide little support. This can be observed by an experiment: when the minerals of a bone are dissolved by soaking the bone in acid or...
Bone Remodeling and Repair01:31

Bone Remodeling and Repair

Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during bone...
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...
Collagens are the Major Structural Proteins of ECM01:13

Collagens are the Major Structural Proteins of ECM

Three main types of fibers are secreted by fibroblasts: collagen fibers, elastic fibers, and reticular fibers. Collagen fiber is made from fibrous protein subunits linked together to form a long, straight fiber. Collagen fibers, while flexible, have great tensile strength, resist stretching, and give ligaments and tendons their characteristic resilience and strength. These fibers hold connective tissues together, even during the body's movement.
Connective tissue proper includes loose...
Type IV Collagen of Basal Lamina01:05

Type IV Collagen of Basal Lamina

Type IV collagen is a 400 nm long, network-forming collagen that acts as a barrier between the epithelial and endothelial cells. Type IV collagen  forms the backbone of the basement membrane by scaffolding with laminin, entactin, proteoglycans, and fibronectin. Apart from rendering structural support to the basement membrane, it also helps entail signaling potentials necessary for both pathological and physiological functions.
A type IV collagen molecule has six alpha chains which can exist in...
Fractures: Bone Repair01:27

Fractures: Bone Repair

Treatment for a fracture is based on the type of break, the bone affected, and the patient's age.
Minor fractures with no bone displacement are treated by immobilizing the fractured bone using a cast or splint. However, in the case of fractures with displaced bones, the broken bones are repositioned before immobilization to ensure successful healing without deformation and loss of function. The realignment of fractured bone ends is performed through a process called reduction. If the procedure...

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Updated: May 21, 2026

Engineering 3D Cellularized Collagen Gels for Vascular Tissue Regeneration
09:23

Engineering 3D Cellularized Collagen Gels for Vascular Tissue Regeneration

Published on: June 16, 2015

Collagen for bone tissue regeneration.

Ana Marina Ferreira1, Piergiorgio Gentile, Valeria Chiono

  • 1Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy.

Acta Biomaterialia
|June 19, 2012
PubMed
Summary
This summary is machine-generated.

Scientists are developing advanced collagen biomaterials for bone tissue engineering. Innovative manufacturing techniques create biomimetic scaffolds that enhance cell interaction and improve bone regeneration for medical implants.

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Published on: June 25, 2019

Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Biomedical Engineering

Background:

  • Collagen's structure and cell interactions are key to developing new biomaterials.
  • Resorbable collagen-based implants require understanding anatomy, function, and collagen's role in regeneration.
  • Bone is a complex tissue vital for metabolism, hematopoiesis, and structural integrity.

Purpose of the Study:

  • To review the hierarchical structure and properties of collagen molecules.
  • To discuss the challenges in manufacturing collagen-based materials for biomedical applications.
  • To focus on bone tissue engineering applications and advancements.

Main Methods:

  • Critical review of current scientific literature on collagen structure and biomaterials.
  • Analysis of manufacturing techniques for collagen-based scaffolds.
  • Evaluation of biomimetic substrates for cell interaction modulation.

Main Results:

  • Collagen-based scaffolds are designed to mimic the extracellular matrix and guide tissue regeneration.
  • Innovative manufacturing techniques are emerging for creating tailored collagen materials.
  • These advancements facilitate biomimetic substrates that enhance cell interactions.

Conclusions:

  • Understanding collagen's properties is crucial for designing effective bone tissue engineering scaffolds.
  • Novel manufacturing methods enable the creation of advanced biomaterials for bone regeneration.
  • These biomaterials hold promise for improving bone tissue substitution, restoration, and function.