Production and implantation of renal extracellular matrix scaffolds from porcine kidneys as a platform for renal bioengineering investigations

Giuseppe Orlando, Alan C. Farney, Samy S. Iskandar, Sayed Hadi Mirmalek-Sani, David C. Sullivan, Emma Moran, Tamer AbouShwareb, De Coppi Paolo, Kathryn J. Wood, Robert J. Stratta, Anthony Atala, James J. Yoo, Shay Soker

Research output: Contribution to journalArticlepeer-review

174 Scopus citations


BACKGROUND: It is important to identify new sources of transplantable organs because of the critical shortage of donor organs. Tissue engineering holds the potential to address this issue through the implementation of decellularization-recellularization technology. OBJECTIVE: To produce and examine acellular renal extracellular matrix (ECM) scaffolds as a platform for kidney bioengineering. METHODS: Porcine kidneys were decellularized with distilled water and sodium dodecyl sulfate-based solution. After rinsing with buffer solution to remove the sodium dodecyl sulfate, the so-obtained renal ECM scaffolds were processed for vascular imaging, histology, and cell seeding to investigate the vascular patency, degree of decellularization, and scaffold biocompatibility in vitro. Four whole renal scaffolds were implanted in pigs to assess whether these constructs would sustain normal blood pressure and to determine their biocompatibility in vivo. Pigs were sacrificed after 2 weeks and the explanted scaffolds were processed for histology. RESULTS: Renal ECM scaffolds were successfully produced from porcine kidneys. Scaffolds retained their essential ECM architecture and an intact vascular tree and allowed cell growth. On implantation, unseeded scaffolds were easily reperfused, sustained blood pressure, and were tolerated throughout the study period. No blood extravasation occurred. Pathology of explanted scaffolds showed maintenance of renal ultrastructure. Presence of inflammatory cells in the pericapsular region and complete thrombosis of the vascular tree were evident. CONCLUSIONS: Our investigations show that pig kidneys can be successfully decellularized to produce renal ECM scaffolds. These scaffolds maintain their basic components, are biocompatible, and show intact, though thrombosed, vasculature.

Original languageEnglish (US)
Pages (from-to)363-370
Number of pages8
JournalAnnals of surgery
Issue number2
StatePublished - Aug 2012


  • biocompatibility
  • decellularization
  • extracellular matrix
  • porcine model
  • recellularization
  • regenerative medicine
  • scaffold
  • solid organ transplantation
  • tissue engineering

ASJC Scopus subject areas

  • Surgery


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