Abstract
The generation of pluripotent stem cells by somatic cell nuclear transfer (SCNT) has recently been achieved in human cells and sparked new interest in this technology. The authors reporting this methodical breakthrough speculated that SCNT would allow the creation of patient-matched embryonic stem cells, even in patients with hereditary mitochondrial diseases. However, herein we show that mismatched mitochondria in nuclear-transfer-derived embryonic stem cells (NT-ESCs) possess alloantigenicity and are subject to immune rejection. In a murine transplantation setup, we demonstrate that allogeneic mitochondria in NT-ESCs, which are nucleus-identical to the recipient, may trigger an adaptive alloimmune response that impairs the survival of NT-ESC grafts. The immune response is adaptive, directed against mitochondrial content, and amenable for tolerance induction. Mitochondrial alloantigenicity should therefore be considered when developing therapeutic SCNT-based strategies.
| Original language | English |
|---|---|
| Journal | Cell Stem Cell |
| Volume | 16 |
| Issue number | 1 |
| Pages (from-to) | 33-38 |
| Number of pages | 6 |
| ISSN | 1934-5909 |
| DOIs | |
| Publication status | Published - 08.01.2015 |
Funding
We thank Kirsten Fischer Lindahl for her critical comments and editing of the manuscript. We further thank Christiane Pahrmann for performing all cell cultures and for her overall technical assistance and Oktay Kirak and Hidde Ploegh for generating the experimental cells. We extend special thanks to the UKE Imaging Facility (UMIF, Bernd Zobiak) and the UKE Animal Facility. This study was supported by the Else-Kröner-Fresenius-Stiftung (2012_EKES.04; T.D.), a grant from the Fondation Leducq (CDA 2013-2015; S.S.), and the German Research Foundation (Deutsche Forschungsgemeinschaft; DFG: SCHR992/3-1 and SCHR992/4-1; S.S.).
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 3 Good Health and Well-being
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SDG 10 Reduced Inequalities
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