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  4. Engineered substrates incapable of induction of chondrogenic differentiation compared to the chondrocyte imprinted substrates
 
research article

Engineered substrates incapable of induction of chondrogenic differentiation compared to the chondrocyte imprinted substrates

Taheri, Shiva
•
Ghazali, Zahra Sadat
•
Montazeri, Leila  
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March 1, 2023
Biomedical Materials

It is well established that surface topography can affect cell functions. However, finding a reproducible and reliable method for regulating stem cell behavior is still under investigation. It has been shown that cell imprinted substrates contain micro- and nanoscale structures of the cell membrane that serve as hierarchical substrates, can successfully alter stem cell fate. This study investigated the effect of the overall cell shape by fabricating silicon wafers containing pit structure in the average size of spherical-like chondrocytes using photolithography technique. We also used chondrocyte cell line (C28/I2) with spindle-like shape to produce cell imprinted substrates. The effect of all substrates on the differentiation of adipose-derived mesenchymal stem cells (ADSCs) has been studied. The AFM and scanning electron microscopy images of the prepared substrates demonstrated that the desired shapes were successfully transferred to the substrates. Differentiation of ADSCs was investigated by immunostaining for mature chondrocyte marker, collagen II, and gene expression of collagen II, Sox9, and aggrecan markers. C28/I2 imprinted substrate could effectively enhanced chondrogenic differentiation compared to regular pit patterns on the wafer. It can be concluded that cell imprinted substrates can induce differentiation signals better than engineered lithographic substrates. The nanostructures on the cell-imprinted patterns play a crucial role in harnessing cell fate. Therefore, the patterns must include the nano-topographies to have reliable and reproducible engineered substrates.

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Type
research article
DOI
10.1088/1748-605X/acb5d7
Web of Science ID

WOS:000926294700001

Author(s)
Taheri, Shiva
Ghazali, Zahra Sadat
Montazeri, Leila  
Ebrahim, Fatemeh Ale
Javadpour, Jafar
Kamguyan, Khorshid
Thormann, Esben
Renaud, Philippe  
Bonakdar, Shahin
Date Issued

2023-03-01

Publisher

IOP Publishing Ltd

Published in
Biomedical Materials
Volume

18

Issue

2

Article Number

025006

Subjects

Engineering, Biomedical

•

Materials Science, Biomaterials

•

Engineering

•

Materials Science

•

chondrogenic differentiation

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cell imprinting

•

lithography

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nano-topography

•

mesenchymal stem-cells

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articular-cartilage

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micro

•

topography

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fabrication

•

fate

•

expression

•

phenotype

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responses

•

surfaces

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LMIS4  
Available on Infoscience
March 13, 2023
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/195857
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