Transplantation of neural stem cells in a rat model of stroke: assessment of short-term graft survival and acute host immunological response

被引:118
作者
Modo, M
Rezaie, P
Heuschling, P
Patel, S
Male, DK
Hodges, H
机构
[1] Inst Psychiat, Neuroimaging Res Grp, London SE5 8AF, England
[2] Inst Psychiat, Dept Psychol, London SE5 8AF, England
[3] Inst Psychiat, Dept Neuropathol, London SE5 8AF, England
[4] Ctr Univ Luxembourg, Dept Sci, Luxembourg, Luxembourg
[5] Open Univ, Dept Biol Sci, Milton Keynes MK7 6AA, Bucks, England
关键词
middle cerebral artery occlusion; immunosuppression; immortalised neuroepithelial (MHP36) stem cells; concordant xenograft;
D O I
10.1016/S0006-8993(02)03463-7
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
The use of progenitors and stem cells for neural grafting is promising, as these not only have the potential to be maintained in vitro until use, but may also prove less likely to evoke an immunogenic response in the host, when compared to primary (fetal) grafts. We investigated whether the short-term survival of a grafted conditionally immortalised murine neuroepithelial stem cell line (MHP36) (2 weeks post-implantation, 4 weeks post-ischaemia) is influenced by: (i) immunosuppression (cyclo porin A (CSA) vs. no CSA), (ii) the local (intact vs. lesioned hemisphere), or (iii) global (lesioned vs. sham) brain environment. MHP36 cells were transplanted ipsi- and contralateral to the lesion in rats with middle cerebral artery occlusion (MCAo) or sham controls. Animals were either administered CSA or received no inummosuppressive treatment. A proliferation assay of lymphocytes dissociated from cervical lymph nodes, grading of the survival of the grafted cells, and histological evaluation of the immune response revealed no significant difference between animals treated with or without CSA. There was no difference in survival or immunological response to cells grafted ipsi- or contralateral to the lesion. Although a local upregulation of immunological markers (MHC class I, MHC class II, CD45, CD IIb) was detected around the injection site and the ischaemic lesion, these were not specifically upregulated in response to transplanted cells. These results provide evidence for the low immunogenic properties of MHP36 cells during the initial period following implantation, known to be associated with an acute host immune response and ensuing graft rejection. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:70 / 82
页数:13
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