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research article

High-throughput clonal analysis of neural stem cells in microarrayed artificial niches

Roccio, Marta  
•
Gobaa, Samy  
•
Lutolf, Matthias P.  
2012
Integrative Biology

To better understand the extrinsic signals that control neural stem cell (NSC) fate, here we applied a microwell array platform which allows high-throughput clonal analyses of NSCs, cultured either as neurospheres or as adherent clones, exposed to poly(ethylene glycol) (PEG) hydrogel substrates functionalized with selected signaling molecules. We analyzed by time-lapse microscopy and retrospective immunostaining the role of integrin and Notch ligands, two key NSC niche components, in altering the behavior of several hundred single stem cells isolated from a previously described Hes5::GFP reporter mouse. NSC self-renewal was increased by 1.5-fold upon exposure to covalently tethered Laminin-1 and fibronectin fragment 9-10 (FN9-10), where 60 65% of single cells proliferated extensively and remained Nestin positive. Tethering of the Notch ligand Jagged-1 induced activation of Notch signaling. While Jagged-1 alone increased cell survival and proliferation, no further increase in the clonogenic potential of Hes5:: GFP cells was observed upon co-stimulation with Laminin-1 and Jagged-1. We believe that the bioengineering of such in vitro niche analogues is a powerful approach to elucidate single stem cell fate regulation in a well-controlled fashion.

  • Details
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Type
research article
DOI
10.1039/c2ib00070a
Web of Science ID

WOS:000302017100006

Author(s)
Roccio, Marta  
Gobaa, Samy  
Lutolf, Matthias P.  
Date Issued

2012

Published in
Integrative Biology
Volume

4

Start page

391

End page

400

Subjects

Self-Renewal

•

In-Vitro

•

Stem/Progenitor Cells

•

Subventricular Zone

•

Adult Neurogenesis

•

Vascular Niche

•

Notch

•

Differentiation

•

Expression

•

Growth

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
UPLUT  
Available on Infoscience
April 26, 2012
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/79709
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