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- Hücresel Self-Meclis Biyomekanik Analizi ve Doku Mühendisliği, Hücre-Türetilmiş Doku Yüzüklerin Üretiyor yönelik
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Articles by Tracy A. Gwyther in JoVE
Hücresel Self-Meclis Biyomekanik Analizi ve Doku Mühendisliği, Hücre-Türetilmiş Doku Yüzüklerin Üretiyor yönelik
Tracy A. Gwyther, Jason Z. Hu, Kristen L. Billiar, Marsha W. Rolle
Biomedical Engineering Department, Worcester Polytechnic Institute
Bu makalede, hücresel öz-montaj hücre kökenli doku halkaları oluşturmak için çok yönlü bir yöntem özetlemektedir. Düz kas hücreleri içine numaralı seribaşı halka şeklinde agaroz kuyuları agrega ve 7 gün içinde sağlam bir üç boyutlu (3D) dokular oluşturmak için sözleşme. Milimetre ölçekli doku halkaları mekanik test için elverişli ve doku montaj için yapı taşları olarak hizmet.
Other articles by Tracy A. Gwyther on PubMed
Cells, Tissues, Organs. 2011 | Pubmed ID: 21252472
The goal of this study was to develop a system to rapidly generate engineered tissue constructs from aggregated cells and cell-derived extracellular matrix (ECM) to enable evaluation of cell-derived tissue structure and function. Rat aortic smooth muscle cells seeded into annular agarose wells (2, 4 or 6 mm inside diameter) aggregated and formed thick tissue rings within 2 weeks of static culture (0.76 mm at 8 days; 0.94 mm at 14 days). Overall, cells appeared healthy and surrounded by ECM comprised of glycosoaminoglycans and collagen, although signs of necrosis were observed near the centers of the thickest rings. Tissue ring strength and stiffness values were superior to those reported for engineered tissue constructs cultured for comparable times. The strength (100-500 kPa) and modulus (0.5-2 MPa) of tissue rings increased with ring size and decreased with culture duration. Finally, tissue rings cultured for 7 days on silicone mandrels fused to form tubular constructs. Ring margins were visible after 7 days, but tubes were cohesive and mechanically stable, and histological examination confirmed fusion between ring subunits. This unique system provides a versatile new tool for optimization and functional assessment of cell-derived tissue, and a new approach to creating tissue-engineered vascular grafts.