Establishment of Efficacy and Safety Assessment of Human Adipose Tissue-Derived Mesenchymal Stem Cells (hATMSCs) in a Nude Rat Femoral Segmental Defect Model
Journal of Korean Medical Science
;
: 482-491, 2011.
Artigo
em Inglês
| WPRIM
| ID: wpr-173916
ABSTRACT
Human adipose tissue-derived mesenchymal stem cell (hATMSC) have emerged as a potentially powerful tool for bone repair, but an appropriate evaluation system has not been established. The purpose of this study was to establish a preclinical assessment system to evaluate the efficacy and safety of cell therapies in a nude rat bone defect model. Segmental defects (5 mm) were created in the femoral diaphyses and transplanted with cell media (control), hydroxyapatite/tricalcium phosphate scaffolds (HA/TCP, Group I), hATMSCs (Group II), or three cell-loading density of hATMSC-loaded HA/TCP (Group III-V). Healing response was evaluated by serial radiography, micro-computed tomography and histology at 16 weeks. To address safety-concerns, we conducted a GLP-compliant toxicity study. Scanning electron microscopy studies showed that hATMSCs filled the pores/surfaces of scaffolds in a cell-loading density-dependent manner. We detected significant increases in bone formation in the hATMSC-loaded HA/TCP groups compared with other groups. The amount of new bone formation increased with increases in loaded cell number. In a toxicity study, no significant hATMSC-related changes were found in body weights, clinical signs, hematological/biochemical values, organ weights, or histopathological findings. In conclusion, hATMSCs loaded on HA/TCP enhance the repair of bone defects and was found to be safe under our preclinical efficacy/safety hybrid assessment system.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Transplante Heterólogo
/
Materiais Biocompatíveis
/
Doenças Ósseas
/
Regeneração Óssea
/
Ratos Nus
/
Fosfatos de Cálcio
/
Tomografia Computadorizada por Raios X
/
Tecido Adiposo
/
Durapatita
/
Diáfises
Tipo de estudo:
Estudo prognóstico
Limite:
Animais
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Journal of Korean Medical Science
Ano de publicação:
2011
Tipo de documento:
Artigo
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