Synthetic Extracellular Matrices for in Situ Tissue Engineering

Alison B. Pratt, Franz E. Weber, Hugo G. Schmoekel, Ralph Müller, Jeffrey A. Hubbell

Research output: Contribution to journalArticle

183 Citations (Scopus)

Abstract

Cell interactions with the extracellular matrix play important roles in guiding tissue morphogenesis. The matrix stimulates cells to influence such things as differentiation and the cells actively remodel the matrix via local proteolytic activity. We have designed synthetic hydrogel networks that participate in this interplay: They signal cells via bound adhesion and growth factors, and they also respond to the remodeling influence of cell-associated proteases. Poly(ethylene glycol)-bis-vinylsulfone was cross-linked by a Michael-type addition reaction with a peptide containing three cysteine residues, the peptide sequence being cleavable between each cysteine residue by the cell-associated protease plasmin. Cells were able to invade gel networks that contained adhesion peptides and were crosslinked by plasmin-sensitive peptides, while materials lacking either of these two characteristics resisted cell infiltration. Incorporated bone morphogenetic protein-2 (BMP-2) induced bone healing in a rat model in materials that were both adhesive and plasmin-sensitive, while materials lacking plasmin sensitivity resisted formation of bone within the material. Furthermore, when a heparin bridge was incorporated as a BMP-2 affinity site, mimicking yet another characteristic of the extracellular matrix, statistically improved bone regeneration was observed.

Original languageEnglish
Pages (from-to)27-36
Number of pages10
JournalBiotechnology and Bioengineering
Volume86
Issue number1
DOIs
StatePublished - Apr 5 2004
Externally publishedYes

Fingerprint

Fibrinolysin
Tissue Engineering
Tissue engineering
Extracellular Matrix
Bone
Peptides
Bone Morphogenetic Protein 2
Cysteine
Peptide Hydrolases
Adhesion
Addition reactions
Hydrogel
Proteins
Infiltration
Polyethylene glycols
Heparin
Rats
Adhesives
Intercellular Signaling Peptides and Proteins
Bone Regeneration

Keywords

  • Bone
  • Growth factor
  • Matrix
  • Peptide
  • Proteolysis

ASJC Scopus subject areas

  • Biotechnology
  • Microbiology

Cite this

Pratt, A. B., Weber, F. E., Schmoekel, H. G., Müller, R., & Hubbell, J. A. (2004). Synthetic Extracellular Matrices for in Situ Tissue Engineering. Biotechnology and Bioengineering, 86(1), 27-36. https://doi.org/10.1002/bit.10897

Synthetic Extracellular Matrices for in Situ Tissue Engineering. / Pratt, Alison B.; Weber, Franz E.; Schmoekel, Hugo G.; Müller, Ralph; Hubbell, Jeffrey A.

In: Biotechnology and Bioengineering, Vol. 86, No. 1, 05.04.2004, p. 27-36.

Research output: Contribution to journalArticle

Pratt, AB, Weber, FE, Schmoekel, HG, Müller, R & Hubbell, JA 2004, 'Synthetic Extracellular Matrices for in Situ Tissue Engineering', Biotechnology and Bioengineering, vol. 86, no. 1, pp. 27-36. https://doi.org/10.1002/bit.10897
Pratt, Alison B. ; Weber, Franz E. ; Schmoekel, Hugo G. ; Müller, Ralph ; Hubbell, Jeffrey A. / Synthetic Extracellular Matrices for in Situ Tissue Engineering. In: Biotechnology and Bioengineering. 2004 ; Vol. 86, No. 1. pp. 27-36.
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