Controlled differentiation of human bone marrow stromal cells using magnetic nanoparticle technology

Kanczler, Janos M., Sura, Harpul S., Magnay, Julia, Green, David, Oreffo, Richard O.C., Dobson, Jon P. and El Haj, Alicia J. (2010) Controlled differentiation of human bone marrow stromal cells using magnetic nanoparticle technology. Tissue Engineering Part A, 16 10: 3241-3250. doi:10.1089/ten.tea.2009.0638


Author Kanczler, Janos M.
Sura, Harpul S.
Magnay, Julia
Green, David
Oreffo, Richard O.C.
Dobson, Jon P.
El Haj, Alicia J.
Title Controlled differentiation of human bone marrow stromal cells using magnetic nanoparticle technology
Journal name Tissue Engineering Part A   Check publisher's open access policy
ISSN 1937-3341
Publication date 2010-10
Sub-type Article (original research)
DOI 10.1089/ten.tea.2009.0638
Volume 16
Issue 10
Start page 3241
End page 3250
Total pages 10
Place of publication United States
Publisher Mary Ann Liebert
Collection year 2011
Language eng
Formatted abstract
Targeting and differentiating stem cells at sites of injury and repair is an exciting and promising area for disease treatment and reparative medicine. We have investigated remote magnetic field activation of magnetic nanoparticle-tagged mechanosensitive receptors on the cell membrane of human bone marrow stromal cells (HBMSCs) for use in osteoprogenitor cell delivery systems and activation of differentiation in vitro and in vivo toward an osteochondral lineage. HBMSC-labeled with magnetic beads coated with antibodies or peptides to the transmembrane ion channel stretch activated potassium channel (TREK-1) or arginine-glycine-aspartic acid were cultured in monolayer or encapsulated into polysaccharide alginate/chitosan microcapsules. Upregulation in gene expression was measured in magnetic particle-labeled HBMSCs in response to TREK-1 activation over a short period (7 days) with an increase in mRNA levels of Sox9, core binding factor alpha1 (Cbfa1), and osteopontin. Magnetic particle-labeled HBMSCs encapsulated into alginate chitosan capsules were exposed to magnetic forces both in vitro and in vivo intermittently for 21 days. After 21 days the encapsulated, magnetic particle-labeled HBMSCs in vivo were viable as evidenced by extensive cell tracker green fluorescence. The mechanical stimulation of HBMSCs labeled with TREK-1 magnetic nanoparticle receptors enhanced expression of type-1 collagen in vitro with increases in proteoglycan matrix, core binding factor alpha1 (Cbfa1) and collagen synthesis, and extracellular matrix production and elevated the expression of type-1 and type-2 collagen in vivo. Additionally, the magnetically remote stimulation of HBMSCs labeled with magnetic nanoparticle arginine-glycine-aspartic acid considerably enhanced proteoglycan and collagen synthesis and extracellular matrix production and elevated the expression of type-1 and type-2 collagen in vivo and in vitro. Osteogenic mechanosensitive receptor manipulation by magnetic nanotechnology can induce the differentiation of osteoprogenitor cell populations toward an osteogenic lineage. These cell manipulation strategies offer tremendous therapeutic opportunities in soft and hard tissue repair. © 2010 Mary Ann Liebert, Inc.
Keyword Binding factors
Cell manipulation
Cell tracker
In-vitro
Potassium channels
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
School of Medicine Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 47 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 45 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Tue, 29 Mar 2011, 11:35:45 EST by Debbie Banks on behalf of School of Medicine