Dendritic cells differentiated from 129/svj ES-D3 embryonic stem cells prolong syngeneic neural progenitor cells survival in ischemic rat brain
10.3969/j.issn.1000-484X.2015.03.007
- VernacularTitle:胚胎干细胞源性树突状细胞对同源性神经前体细胞脑内移植耐受诱导
- Author:
Ainong MEI
;
Suming ZHANG
- Publication Type:Journal Article
- Keywords:
Embryonic stem cells;
Neural progenitor cell;
Dendritic cell;
Transplant tolerance;
Brain ischemia
- From:
Chinese Journal of Immunology
2015;(3):318-322,328
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study if embryonic stem cell derived dendritic cells(esDCs) could induce transplant tolerance to syngeneic neural progenitor cells ( NPCs) in ischemic rat brain.Methods:Neural progenitor cells ( NPCs) were differentiated from 129/svj pCX-eGFP ES-D3 embryonic stem cells and dendritic cells were directly differentiated from 129/svj ES-D3 respectively.All of SD rats were accepted MCAo surgery and subdivided in two groups based on pretreatment with or without esDCs through tail vein injection 1 week after MCAo.pCX-eGFP NPCs were then injected into the lateral ventricle of animals 2 weeks after MCAo.A proliferation assay of lymphocytes dissociated from cervical lymph nodes by MTT method,counting of the survival of the grafted cells, histological evaluation of CD4,CD8 and ED1 positive cells in brain and detection of mRNA level of IL-10 and IFN-γin ischemic lesions by reverse transcriptase-polymerase chain reaction(RT-PCR) were performed 2 weeks after graft (4 weeks after MCAo).Results:Pre-treatment with esDCs decreased CD4 positive cells infiltration (134.7 ±36.2 vs.198.8 ±59.6,P<0.05) and enhance the survival of NPCs in ischemic striatum,but had no effect on ED1 (298.8 ±75.9 vs.302.2±88.5),CD8 positive cells (145.8 ±45.4 vs.134.3 ± 39.0) distribution (P>0.05).There was also no difference in lymphocytes proliferation (PI,1.245 ±0.211 vs.1.331 ±0.235) or mRNA expression level of IL-10 ( 1.147 ±0.260 vs.1.264 ±0.119 ) and IFN-γ( 1.697 ±0.273 vs.1.829 ±0.250 ) between two groups ( P>0.05).Conclusion:The results indicate that pretreatment with esDCs may prolong syngeneic NPCs survival though reducing CD4 positive cells reaction in ischemic striatum,which provides some evidence for the tolerogenic function of esDCs.However,there was lack of evidence for cytokine-dependent routine involving in this mode and further investigation was needed to make certain the cardinal principle.
