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Related Experiment Video

Updated: Mar 6, 2026

A Novel in vivo Gene Transfer Technique and in vitro Cell Based Assays for the Study of Bone Loss in Musculoskeletal Disorders

A Novel in vivo Gene Transfer Technique and in vitro Cell Based Assays for the Study of Bone Loss in Musculoskeletal Disorders

Published on: June 8, 2014

Local induction of inflammation affects bone formation.

M Croes, M C Kruyt, L Loozen

¹Department of Orthopaedics, University Medical Centre Utrecht, Rm G05.228, P.O. Box 85500, Utrecht 3508 GA, The Netherlands.j.alblas@umcutrecht.nl.

European Cells & Materials

|March 8, 2017

Summary

This summary is machine-generated.

Inflammation impacts bone formation, with some mediators inhibiting and others enhancing bone morphogenetic protein-2 (BMP-2) induced bone growth. This study introduces a novel biomembrane model for investigating local inflammatory effects on bone regeneration.

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Biological Compatibility Profile on Biomaterials for Bone Regeneration

Published on: November 16, 2018

Area of Science:

Biomaterials Science
Regenerative Medicine
Inflammation Research

Background:

Inflammatory processes significantly influence bone regeneration.
Understanding the interplay between inflammation and bone formation is crucial for developing effective bone substitutes.
Existing in vivo models may not adequately isolate local inflammatory effects.

Purpose of the Study:

To develop and validate a novel in vivo biomembrane model for studying local inflammation's effect on ectopic bone formation.
To investigate the impact of specific inflammatory mediators (TNF-α, LPS, LTA) on bone morphogenetic protein-2 (BMP-2) induced bone formation.
To assess the potential of modulating inflammatory responses to enhance bone regeneration.

Main Methods:

Creation of confined biomembrane pockets in rabbits using bone cement discs.
Loading biphasic calcium phosphate (BCP) constructs within pockets with inflammatory mediators (TNF-α, LPS, LTA) and/or BMP-2.
Analysis of ectopic bone formation within constructs after 12 weeks.

Main Results:

Inflammatory mediators alone were not bone-inductive with BCP.
Lipopolysaccharide (LPS) strongly inhibited BMP-2 induced bone formation.
Tumor necrosis factor-alpha (TNF-α) and lipoteichoic acid (LTA) showed a synergistic effect with BMP-2, enhancing bone formation.
The biomembrane model effectively contained inflammatory stimuli and prevented leakage.

Conclusions:

The developed biomembrane model is suitable for in vivo studies of local inflammation and bone formation.
The effect of inflammation on bone regeneration is context-dependent, being either inhibitory or enhancing.
Co-delivery strategies involving inflammatory factors and bone growth factors warrant further investigation for bone regeneration enhancement.