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Bladder acellular matrix conjugated with basic fibroblast growth factor for bladder regeneration.

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Chemically crosslinking basic fibroblast growth factor (bFGF) to bladder acellular matrix (BAM) created a scaffold (CL-BAM/bFGF) that enhanced tissue regeneration by controlling bFGF release and activity at injury sites.

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Tissue Engineering

Background:

  • Basic fibroblast growth factor (bFGF) is crucial for wound repair and tissue regeneration.
  • Effective delivery systems are needed to maintain local bFGF concentrations at injury sites.

Purpose of the Study:

  • To develop a bladder acellular matrix (BAM) scaffold chemically conjugated with bFGF (CL-BAM/bFGF).
  • To evaluate the controlled release and efficacy of bFGF from the CL-BAM/bFGF scaffold in vitro and in vivo.

Main Methods:

  • Chemical crosslinking of bFGF to BAM to create specific binding.
  • In vitro assessment of human fibroblast proliferation.
  • Subcutaneous implantation in rats to evaluate cellularization and vascularization.
  • Rat bladder reconstruction model to assess tissue regeneration.

Main Results:

  • The CL-BAM/bFGF scaffold demonstrated enhanced binding and controlled release of bFGF.
  • Promoted in vitro human fibroblast proliferation.
  • Accelerated cellularization and vascularization in vivo.
  • Showed superior tissue regeneration in the rat bladder reconstruction model compared to controls.

Conclusions:

  • CL-BAM/bFGF effectively prevents bFGF diffusion and maintains its bioactivity.
  • Growth factor-conjugated scaffolds offer a promising strategy for sustained local therapy in wound repair and tissue regeneration.