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Introduction to Fibroblasts01:09

Introduction to Fibroblasts

Rudolph Virchow discovered spindle-shaped cells called fibroblasts in 1858. Inactive fibroblasts, called fibrocytes, become activated by various stimuli, such as growth factors and inflammatory cytokines. Activated fibroblasts play a crucial role in wound healing, inflammation, formation of new blood vessels, and cancer progression. Uncontrolled activation of fibroblasts results in fibrosis, the excess deposition of fibrous tissue, which can lead to scarring and affect normal organs. This...

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Related Experiment Video

Updated: Jul 25, 2026

Murine Dermal Fibroblast Isolation by FACS
06:04

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Published on: January 7, 2016

Dermal fibroblasts genetically engineered to release nerve growth factor.

C W Patrick1, B Zheng, M Schmidt

  • 1Department of Plastic Surgery, The University of Texas M.D. Anderson Cancer Center, Houston, USA.

Annals of Plastic Surgery
|January 5, 2002
PubMed
Summary

Genetically engineered dermal fibroblasts can release nerve growth factor (NGF), mimicking Schwann cells for potential nerve repair. This study optimized transfection methods for enhanced NGF delivery in synthetic nerve constructs.

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Regenerative Medicine

Background:

  • Current nerve repair strategies often rely on autogenous nerve grafts.
  • Engineered constructs offer an alternative for axonal proliferation and nerve regeneration.
  • Growth factor delivery is crucial for enhancing synthetic nerve graft efficacy.

Purpose of the Study:

  • To genetically modify rat dermal fibroblasts (DFBs) to release nerve growth factor (NGF).
  • To optimize nonviral transfection methods for efficient genetic modification of DFBs.
  • To evaluate NGF release kinetics from engineered DFBs for potential nerve regeneration applications.

Main Methods:

  • Utilized the LacZ reporter gene to determine optimal nonviral transfection efficiency using FuGENE6.
  • Genetically modified DFBs with an expression vector encoding rat beta-NGF.
  • Quantified NGF release from transfected DFBs over a 3-day period using ELISA.

Main Results:

  • FuGENE6 achieved optimal transfection efficiency (20.1 +/- 1.9% average).
  • NGF-transfected DFBs showed significantly higher NGF levels compared to controls (p < 0.05).
  • Sustained NGF release was observed from engineered DFBs over 3 days.

Conclusions:

  • Rat DFBs can be genetically engineered to function similarly to Schwann cells in delivering NGF.
  • Optimized transfection methods enable efficient genetic modification for growth factor delivery.
  • These engineered DFBs hold promise for developing advanced synthetic nerve constructs for repair.