Both sides nanopatterned tubular collagen scaffolds as tissue-engineered vascular grafts

Zorlutuna P., Vadgama P., HASIRCI V. N.

JOURNAL OF TISSUE ENGINEERING AND REGENERATIVE MEDICINE, cilt.4, sa.8, ss.628-637, 2010 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 4 Sayı: 8
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1002/term.278
  • Dergi Adı: JOURNAL OF TISSUE ENGINEERING AND REGENERATIVE MEDICINE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.628-637
  • Anahtar Kelimeler: vascular tissue engineering, nanopattern, collagen, vascular smooth muscle cells, endothelial cells, SMOOTH-MUSCLE-CELLS, MECHANICAL-PROPERTIES, ENDOTHELIAL-CELLS, MORPHOLOGY, COCULTURE
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Two major requirements for a tissue-engineered vessel are the establishment of a continuous endothelium and adequate mechanical properties. In this study, a novel tubular collagen scaffold possessing nanopatterns in the form of channels (with a 650 nm periodicity) on both sides was designed and examined after seeding and co-culturing with vascular cells. Initially, the exterior of the tube was seeded with human vascular smooth muscle cells (VSMCs), cultured for 14 days, and then human internal thoracic artery endothelial cells (HITAECs) were seeded on the inside of the tube and cultured for a further week. Microscopy revealed that nano-scale patterns could be reproduced on collagen with high fidelity and preserved during incubation in vitro. The VSMCs were circumferentially orientated with the help of these nanopatterns and formed multilayers on the exterior, while HITAECs formed a continuous layer on the interior, as is the case in natural vessels. Both cell types were observed to proliferate and retain their phenotypes in the co-culture. Copyright (C) 2010 John Wiley & Sons, Ltd.