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Related Experiment Video

Updated: Jul 17, 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-based Tissue Engineering as Applied to Heart Valves.

Y Shi1, R Iyer, A Soundararajan

  • 1Dept. of Cardiothoracic Surgery, University of Southern California, Childrens Hospital Los Angeles, 4650 Sunset Blvd. Los Angeles, CA 90027.

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference
|February 7, 2007
PubMed
Summary

Researchers improved collagen-based tissue engineering by combining mechanical and biochemical stimuli. This approach enhances cellular activity and matrix synthesis, leading to stronger, more aligned tissue constructs for applications like heart valves.

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Engineering Fibrin-based Tissue Constructs from Myofibroblasts and Application of Constraints and Strain to Induce Cell and Collagen Reorganization

Published on: October 28, 2013

Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Biotechnology

Background:

  • Directed collagen gel shrinkage is used for fabricating heart valves and mitral valve chordae.
  • A key limitation in collagen-based tissue equivalents is their inadequate mechanical properties.

Purpose of the Study:

  • To improve the mechanical properties of collagen constructs by providing combined biomechanical and biochemical stimuli.
  • To enhance cellular proliferation and matrix synthesis within collagen constructs.

Main Methods:

  • Exploration of various holder materials and configurations to maximize lateral compaction.
  • Design of a bioreactor for applying controlled static tension to collagen constructs.
  • Development of a fortified cell culture medium with essential trace elements, amino acids, and vitamins.

Main Results:

  • Investigated methods to enhance cellular proliferation and matrix synthesis.
  • Developed a bioreactor and fortified medium to provide combined stimuli.
  • Focused on improving the mechanical properties of collagen constructs through optimized fabrication.

Conclusions:

  • Combining biomechanical and biochemical stimuli is a promising strategy to enhance the mechanical strength of collagen constructs.
  • Optimized fabrication methods and culture conditions can lead to superior tissue-engineered products.
  • Further development in tissue engineering aims to overcome limitations in current biomaterials.