Document Detail

Extracellular matrix molecules enhance the neurotrophic effect of Schwann cell-like differentiated adipose-derived stem cells and increase cell survival under stress conditions.
MedLine Citation:
PMID:  22897220     Owner:  NLM     Status:  MEDLINE    
Since the first reports of induction of adipose-derived stem cells (ASC) into neuronal and glial cell phenotypes, expectations have increased regarding their use in tissue engineering applications for nerve repair. Cell adhesion to extracellular matrix (ECM) is a basic feature of survival, differentiation, and migration of Schwann cells (SC) during nerve regeneration, and fibronectin and laminin are two key molecules of this process. Interaction between ECM and SC-like differentiated ASC (dASC) could potentially improve the neurotrophic potential of the stem cells. We have investigated the effect of ECM molecules on SC-like dASC in terms of proliferation, adhesion, and cell viability. Fibronectin and laminin did not affect the proliferation of dASC when compared with cell adherent tissue culture plastic, but significantly improved viability and cell attachment when dASC were exposed to apoptotic conditions. To assess the influence of the ECM molecules on dASC neurotrophic activity, dASC were seeded onto ECM-coated culture inserts suspended above dorsal root ganglia (DRG) sensory neurons. Neurite outgrowth of DRG neurons was enhanced when dASC were seeded on fibronectin and laminin when compared with controls. When DRG neurons and dASC were in direct contact on the various surfaces there was significantly enhanced neurite outgrowth and coculture with laminin-conditioned dASC produced the longest neurites. Compared with primary SCs, dASC grown on laminin produced similar levels of neurite outgrowth in the culture insert experiments but neurite length was shorter in the direct contact groups. Anti β1 integrin blocking antibody could inhibit baseline and dASC evoked neurite elongation but had no effect on outgrowth mediated by laminin-conditioned dASC. ECM molecules had no effect on the levels of nerve growth factor and brain-derived neurotrophic factor secretion from dASC. The results of the study suggest that ECM molecules can significantly improve the potential of dASC for nerve regeneration.
Pietro G di Summa; Daniel F Kalbermatten; Wassim Raffoul; Giorgio Terenghi; Paul J Kingham
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2012-09-24
Journal Detail:
Title:  Tissue engineering. Part A     Volume:  19     ISSN:  1937-335X     ISO Abbreviation:  Tissue Eng Part A     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-01-09     Completed Date:  2013-07-11     Revised Date:  2014-02-04    
Medline Journal Info:
Nlm Unique ID:  101466659     Medline TA:  Tissue Eng Part A     Country:  United States    
Other Details:
Languages:  eng     Pagination:  368-79     Citation Subset:  IM    
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MeSH Terms
Adipocytes / cytology*,  drug effects,  physiology*
Cell Differentiation / drug effects,  physiology
Cell Survival / drug effects,  physiology
Cells, Cultured
Extracellular Matrix Proteins / pharmacology
Fibronectins / pharmacology*
Laminin / pharmacology*
Nerve Growth Factors / pharmacology
Schwann Cells / cytology*,  drug effects,  physiology*
Stress, Physiological / drug effects,  physiology
Tissue Engineering / methods*
Reg. No./Substance:
0/Extracellular Matrix Proteins; 0/Fibronectins; 0/Laminin; 0/Nerve Growth Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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