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  4. An integrated microfluidic device for stem cell differentiation based on cell-imprinted substrate designed for cartilage regeneration in a rabbit model
 
research article

An integrated microfluidic device for stem cell differentiation based on cell-imprinted substrate designed for cartilage regeneration in a rabbit model

Yazdian Kashani, Sepideh
•
Keshavarz Moraveji, Mostafa
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Taghipoor, Mojtaba
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2021
Materials Science and Engineering: C

Separating cells from the body and cultivating them in vitro will alter the function of cells. Therefore, for optimal cell culture in the laboratory, conditions similar to those of their natural growth should be provided. In previous studies, it has been shown that the use of cellular shape at the culture surface can regulate cellular function. In this work, the efficiency of the imprinting method increased by using microfluidic chip design and fabrication. In this method, first, a cell-imprinted substrate of chondrocytes was made using a microfluidic chip. Afterwards, stem cells were cultured on a cell-imprinted substrate using a second microfluidic chip aligned with the substrate. Therefore, stem cells were precisely placed on the chondrocyte patterns on the substrate and their fibroblast-like morphology was changed to chondrocyte's spherical morphology after 14-days culture in the chip without using any chemical growth factor. After chondrogenic differentiation and in vitro assessments (real-time PCR and immunocytotoxicity), differentiated stem cells were transferred on a collagen-hyaluronic acid scaffold and transplanted in articular cartilage defect of the rabbit. After 6 months, the post-transplantation analysis showed that the articular cartilage defect had been successfully regenerated in differentiated stem cell groups in comparison with the controls. In conclusion, this study showed the potency of the imprinting method for inducing chondrogenicity in stem cells, which can be used in clinical trials due to the safety of the procedure.

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Type
research article
DOI
10.1016/j.msec.2020.111794
Author(s)
Yazdian Kashani, Sepideh
•
Keshavarz Moraveji, Mostafa
•
Taghipoor, Mojtaba
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Kowsari-Esfahan, Reza
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Hosseini, Ali Akbar
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Montazeri, Leila
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Dehghan, Mohammad Mehdi
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Gholami, Hossein
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Farzad-Mohajeri, Saeed
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Mehrjoo, Morteza
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Date Issued

2021

Published in
Materials Science and Engineering: C
Volume

121

Article Number

111794

Subjects

Cell-imprinted substrate

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Microfluidics

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Chondrocyte

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Stem cell differentiation

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Cartilage tissue engineering

Peer reviewed

REVIEWED

Written at

OTHER

EPFL units
LMIS4  
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/175159
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