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Preparation and Use of Photocatalytically Active Segmented Ag|ZnO and Coaxial TiO2-Ag Nanowires Made by Templated Electrodeposition
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High-Density ZnO Nanowires as a Reversible Myogenic-Differentiation Switch
Vito Errico1, Giuseppe Arrabito1, Ersilia Fornetti2
1Department of Electronic Engineering , University of Rome Tor Vergata , Via del Politecnico 1 , 00133 Rome , Italy.
ACS Applied Materials & Interfaces
|April 6, 2018
Summary
Researchers developed a novel method using zinc oxide nanowires (ZnO NWs) to control stem cell differentiation. This technique allows for the expansion of undifferentiated mesoangioblasts, crucial for regenerative medicine and tissue engineering applications.
Area of Science:
- Biotechnology
- Regenerative Medicine
- Materials Science
Background:
- Mesoangioblasts are promising for stem cell therapy but limited by differentiation during growth.
- Regenerative medicine requires a scalable source of undifferentiated myogenic progenitor cells.
Purpose of the Study:
- To achieve reversible control over myogenic differentiation during mesoangioblast proliferation.
- To explore the use of functionalized substrates for stem cell expansion.
Main Methods:
- Functionalizing glass substrates with high-density zinc oxide nanowires (ZnO NWs).
- Culturing mesoangioblasts on ZnO NW-functionalized surfaces and standard glass for comparison.
- Assessing cell morphology, viability, and expression of differentiation markers (myosin heavy chain).
Main Results:
- Mesoangioblasts on ZnO NWs maintained an undifferentiated, spherical state for 8 days without lamellopodia.
- Myosin heavy chain expression, a marker of differentiation, was absent in cells on ZnO NWs.
- Differentiation potential was fully recovered upon replating cells on standard culture glass, demonstrating reversibility without cell damage.
Conclusions:
- Zinc oxide nanowires enable reversible control of myogenic differentiation in mesoangioblasts.
- This method facilitates the in vitro expansion of undifferentiated stem/progenitor cells.
- The findings represent a breakthrough for cell-based therapies and tissue engineering.
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