A 3D aligned microfibrous myocardial tissue construct cultured under transient perfusion

Date

2011-08-01

Author

Kenar, Halime
Kose, Gamze T.
Toner, Mehmet
Kaplan, David L.
Hasırcı, Vasıf Nejat

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The goal of this study was to design and develop a myocardial patch to use in the repair of myocardial infarctions or to slow down tissue damage and improve long-term heart function. The basic 3D construct design involved two biodegradable macroporous tubes, to allow transport of growth media to the cells within the construct, and cell seeded, aligned fiber mats wrapped around them. The microfibrous mat housed mesenchymal stem cells (MSCs) from human umbilical cord matrix (Wharton's Jelly) aligned in parallel to each other in a similar way to cell organization in native myocardium. Aligned micron-sized fiber mats were obtained by electrospinning a polyester blend (PHBV (5% HV), P(L-D,L)LA (70:30) and poly(glycerol sebacate) (PGS)). The micron-sized electrospun parallel fibers were effective in Wharton's Jelly (WJ) MSCs alignment and the cells were able to retract the mat. The 3D construct was cultured in a microbioreactor by perfusing the growth media transiently through the macroporous tubing for two weeks and examined by fluorescence microscopy for cell distribution and preservation of alignment. The fluorescence images of thin sections of 3D constructs from static and perfused cultures confirmed enhanced cell viability, uniform cell distribution and alignment due to nutrient provision from inside the 3D structure.

Subject Keywords

Cardiac tissue engineering, Stem cell, Cell morphology, Polyhydroxybutyric acid, Polylactic acid, DMA (dynamic mechanical analysis)

URI

https://hdl.handle.net/11511/31754

Journal

BIOMATERIALS

DOI

https://doi.org/10.1016/j.biomaterials.2011.04.025

Collections

Graduate School of Natural and Applied Sciences, Article

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Citation Formats

H. Kenar, G. T. Kose, M. Toner, D. L. Kaplan, and V. N. Hasırcı, “A 3D aligned microfibrous myocardial tissue construct cultured under transient perfusion,” BIOMATERIALS, pp. 5320–5329, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31754.