Abstract:
:Cell-free approaches to in situ tissue engineering require materials that are mechanically stable and are able to control cell-adhesive behavior upon implantation. Here, the development of mechanically stable grafts with non-cell adhesive properties via a mix-and-match approach using ureido-pyrimidinone (UPy)-modified supramolecular polymers is reported. Cell adhesion is prevented in vitro through mixing of end-functionalized or chain-extended UPy-polycaprolactone (UPy-PCL or CE-UPy-PCL, respectively) with end-functionalized UPy-poly(ethylene glycol) (UPy-PEG) at a ratio of 90:10. Further characterization reveals intimate mixing behavior of UPy-PCL with UPy-PEG, but poor mechanical properties, whereas CE-UPy-PCL scaffolds are mechanically stable. As a proof-of-concept for the use of non-cell adhesive supramolecular materials in vivo, electrospun vascular scaffolds are applied in an aortic interposition rat model, showing reduced cell infiltration in the presence of only 10% of UPy-PEG. Together, these results provide the first steps toward advanced supramolecular biomaterials for in situ vascular tissue engineering with control over selective cell capturing.
journal_name
Macromol Bioscijournal_title
Macromolecular bioscienceauthors
van Almen GC,Talacua H,Ippel BD,Mollet BB,Ramaekers M,Simonet M,Smits AI,Bouten CV,Kluin J,Dankers PYdoi
10.1002/mabi.201500278subject
Has Abstractpub_date
2016-03-01 00:00:00pages
350-62issue
3eissn
1616-5187issn
1616-5195journal_volume
16pub_type
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