Tissue engineered tympanic membrane repairment materials with adipose-derived stem cells
10.3760/cma.j.issn.1673-0860.2012.06.007
- VernacularTitle:大鼠脂肪干细胞构建组织工程化鼓膜修复材料的初步研究
- Author:
Hui-Jia LEI
1
;
Jian-Jun SUN
;
Yang LIU
;
Xue-Sheng LI
;
Ben-Gang PENG
Author Information
1. 解放军海军总医院
- Keywords:
Mesenchymal stem cells;
Tympanic membrane;
Tissue engineering;
Rats,Wistar
- From:
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
2012;47(6):466-470
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the morphology.,proliferative activity and adhesion of adiposederived stem cells (ASC) seeded in the polylactic-co-glycolic acid (PLGA) scaffold,and to provide experimental data for fabricating tissue engineered tympanic membrane repairment materials.Methods Wistar rats were selected,and the ASC were isolated and co-cultured with the PLGA scaffold. The morphology and proliferative activity of ASC in the scaffold were examined by immunofluorescence of Vimentin and Ki67 respectively.All the immunofluorescence signals were analyzed by a confocal laser scan microscopy system FLUOVIEW FV1000.The adhesion of ASC to the PLGA scalfold was determined by scanning electron microscopy.Results Immunofluorescence of vimentin showed rats ASC displayed normal morphology and grew orderly in the PLGA scalfold.Immunofluorescence of Ki67 showed the normal active proliferation of ASC in the scaffolds.The Ki67 mean positive index ( x ± s) of the ASC in the scalfold was (8.21 ± 1.76 ) ％,while in control group ( cultured without PLGA scalfold ) was ( 9.06 ± 1.95 ) ％.There was no statistic significance between the two groups ( t =1.03,P =0.30 ).Scanning electron microscopy demonstrated ASC adhered well to the PLGA scalfold,the pseudopodia of ASC could also be observed and the proliferative cell conjunction was tight.Conclusion ASC has good biocompatible to the PLGA scaffold and could normally adhere and proliferate in PLGA scaffold.
