Development of an esophagus acellular matrix tissue scaffold

Amit D. Bhrany, Benjamin L. Beckstead, Tess C. Lang, D Gregory Farwell, Cecilia M. Giachelli, Buddy D. Ratner

Research output: Contribution to journalArticlepeer-review

99 Scopus citations


A cell-extraction protocol yielding an esophagus acellular matrix (EAM) scaffold for use in tissue engineering of an esophagus, including hypotonic lysis, multiple detergent cell extraction steps, and nucleic acid digestion, was developed in a rat model. Histological techniques, burst pressure studies, in vitro esophageal epithelial cell seeding, and in vivo implantation were used to assess cell extraction, extracellular matrix (ECM) preservation, and biocompatibility. Microscopy demonstrated that cell extraction protocols using sodium dodecyl sulfate (SDS) (0.5%, wt/vol) as a detergent resulted in cell-free EAM with retained ECM protein collagen, elastin, laminin, and fibronectin. Burst pressure studies indicated a loss of tensile strength in EAMs, but at intraluminal pressures that were unlikely to affect in vivo application. In vitro cell seeding studies exhibited epithelial cell proliferation with stratification similar to native esophagi after 11 days, and subcutaneously implanted EAMs displayed neovascularization and a minimal inflammatory response after 30 days of implantation. This study presents an esophagus acellular matrix tissue scaffold with preserved ECM proteins, biomechanical properties, and the ability to support esophageal cell proliferation to serve as the foundation for a tissue-engineered esophagus.

Original languageEnglish (US)
Pages (from-to)319-330
Number of pages12
JournalTissue Engineering
Issue number2
StatePublished - Feb 2006

ASJC Scopus subject areas

  • Biophysics
  • Cell Biology
  • Biotechnology


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