Establishment of immortalized mesenchymal stromal cells with red fluorescence protein expression for in vivo transplantation and tracing in the rat model with traumatic brain injury.
Cytotherapy
; 12(4): 455-65, 2010 Jul.
Article
em En
| MEDLINE
| ID: mdl-20230225
ABSTRACT
BACKGROUND AIMS:
Human mesenchymal stromal cells (hMSC) play a crucial role in tissue engineering and regenerative medicine, and have important clinical potential for cell therapy. However, many hMSC studies have been restricted by limited cell numbers and difficult detection in vivo. To expand the lifespan, hMSC are usually immortalized by virus-mediated gene transfer. However, these genetically modified cells easily lose critical phenotypes and stable genotypes because of insertional mutagenesis.METHODS:
We used a non-viral transfection method to establish human telomerase reverse transcriptase-immortalized cord blood hMSC (hTERT-cbMSC). We also established red fluorescent protein (RFP)-expressing hTERT-cbMSC (hTERT/RFP-cbMSC) by the same non-viral transfection method, and these cells were injected into a rat model with traumatic brain injury for in vivo detection analysis.RESULTS:
The hTERT-cbMSC could grow more than 200 population doublings with a stable doubling time and maintained differentiation capacities. hTERT/RFP-cbMSC could proliferate efficiently within 2 weeks at the injury location and could be detected easily under a fluorescent microscope. Importantly, both hTERT-cbMSC and hTERT/RFP-cbMSC showed no chromosomal abnormalities by karyotype analysis and no tumor formation in severe combined immunodeficient (SCID) mice by transplantation assay.CONCLUSIONS:
We have developed immortalized cbMSC with hTERT expression and RFP expression, which will be useful tools for stem cell research and translational study.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Lesões Encefálicas
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Linhagem Celular Transformada
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Células Estromais
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Telomerase
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Transplante de Células-Tronco
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Células-Tronco Mesenquimais
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Proteínas Luminescentes
Limite:
Animals
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Humans
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Male
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article