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Related Concept Videos

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...
Bone Remodeling01:40

Bone Remodeling

Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
Osteoclasts in Bone Remodeling01:31

Osteoclasts in Bone Remodeling

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...
The Extracellular Matrix01:29

The Extracellular Matrix

Overview
In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.
Composition of the Extracellular Matrix
The extracellular matrix (ECM) is commonly composed of ground substance, a gel-like fluid, fibrous components, and many structurally and functionally diverse...
Bone Cells and Tissue01:30

Bone Cells and Tissue

Bones contain a relatively small number of cells entrenched in a matrix of organic and inorganic components. Although bone cells compose only a small amount of the bone volume, they are crucial to its function. Four types of cells are found within the bone tissue— osteoblasts, osteocytes, osteogenic cells, and osteoclasts.
Osteoblasts and Osteocytes
The osteoblast is the bone cell responsible for forming new bone tissue. It is found in the growing portions of bone, including the periosteum and...
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...

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Related Experiment Video

Updated: Jun 17, 2026

Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect
09:35

Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect

Published on: September 11, 2015

Cell interactions in bone tissue engineering.

R P Pirraco1, A P Marques, R L Reis

  • 13B's Research Group - Biomaterials, Biodegradables and Biomimetics, Deptartment of Polymer Engineering, University of Minho, Guimarães, Portugal.

Journal of Cellular and Molecular Medicine
|January 7, 2010
PubMed
Summary
This summary is machine-generated.

Bone tissue engineering (TE) needs new approaches to improve bone regeneration. This review highlights studies on 3D cellular interactions for better engineered bone tissue development.

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Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect
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Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Cell Biology

Background:

  • Bone fractures compromise natural healing in 400,000-800,000 US cases annually.
  • Bone tissue engineering (TE) aims to enhance bone regeneration over artificial implants.
  • Current bone TE approaches have limitations, necessitating novel strategies.

Purpose of the Study:

  • To review existing literature on 3D cellular interactions in bone tissue engineering.
  • To explore how understanding cell-to-cell communication in a 3D environment advances bone TE.
  • To identify contributions of 3D interaction studies to functional engineered bone development.

Main Methods:

  • Literature review of bone tissue engineering studies.
  • Focus on research investigating cellular interactions within a three-dimensional context.
  • Analysis of how these interactions inform the development of engineered bone.

Main Results:

  • Few studies have comprehensively examined cell-to-cell interactions in a 3D bone microenvironment.
  • 3D cellular interactions are critical for mimicking native bone tissue.
  • Understanding these interactions is essential for improving bone TE outcomes.

Conclusions:

  • Bone tissue engineering requires a deeper understanding of 3D cellular communication.
  • Future bone TE strategies should prioritize in-depth investigation of 3D cellular interactions.
  • This research area holds significant potential for advancing bone regeneration therapies.