Myogenic differentiation of human bone marrow mesenchymal stem cells on a 3D nano fibrous scaffold for bladder tissue engineering

Biomaterials. 2010 Feb;31(5):870-7. doi: 10.1016/j.biomaterials.2009.10.001. Epub 2009 Oct 22.

Abstract

Current strategies for engineering bladder tissues include a bladder biopsy for in vitro cell expansion for use in reconstructive procedures. However, this approach cannot be used in patients with bladder cancer who need a complete bladder replacement. Bone marrow mesenchymal stem cells (BMSC) might be an alternative cell source to better meet this need. We investigated the effects of soluble growth factors, bladder extracellular matrix (ECM), and 3D dynamic culture on cell proliferation and differentiation of human BMSC into smooth muscle cells (SMC). Myogenic growth factors (PDGF-BB and TGF-beta1) alone, or combined either with bladder ECM or dynamic cultures, induced BMSC to express smooth muscle-specific genes and proteins. Either ECM or the dynamic culture alone promoted cell proliferation but did not induce myogenic differentiation of BMSC. A highly porous poly-l-lactic acid (PLLA) scaffold provided a 3D structure for maximizing the cell-matrix penetration, maintained myogenic differentiation of the induced BMSC, and promoted tissue remolding with rich capillary formation in vivo. Our results demonstrate that myogenic-differentiated BMSC seeded on a nano fibrous PLLA scaffold can be potentially used for cell-based tissue engineering for bladder cancer patients requiring cystoplasty.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Absorption
  • Biocompatible Materials / chemistry*
  • Biomimetic Materials / chemistry
  • Cell Culture Techniques / methods
  • Cell Differentiation
  • Cell Proliferation
  • Cells, Cultured
  • Crystallization / methods
  • Extracellular Matrix / chemistry
  • Humans
  • Materials Testing
  • Mesenchymal Stem Cells / cytology*
  • Mesenchymal Stem Cells / physiology*
  • Myocytes, Smooth Muscle / cytology*
  • Myocytes, Smooth Muscle / physiology*
  • Nanostructures / chemistry*
  • Nanostructures / ultrastructure
  • Particle Size
  • Porosity
  • Surface Properties
  • Tissue Engineering / methods*
  • Urinary Bladder / cytology
  • Urinary Bladder / growth & development

Substances

  • Biocompatible Materials