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Neuro-regeneration therapy using human Muse cells is highly effective in a mouse intracerebral hemorrhage model

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Abstract

A novel type of non-tumorigenic pluripotent stem cell, the Muse cell (multi-lineage, differentiating stress enduring cell), resides in the connective tissue and in cultured mesenchymal stem cells (MSCs) and is reported to differentiate into multiple cell types according to the microenvironment to repair tissue damage. We examined the efficiency of Muse cells in a mouse intracerebral hemorrhage (ICH) model. Seventy μl of cardiac blood was stereotactically injected into the left putamen of immunodeficient mice. Five days later, 2 × 105 of human bone marrow MSC-derived Muse cells (n = 6) or cells other than Muse cells in MSCs (non-Muse, n = 6) or the same volume of PBS (n = 11) was injected into the ICH cavity. Water maze and motor function tests were implemented for 68 days, and immunohistochemistry for NeuN, MAP2 and GFAP was done. The Muse group showed impressive recovery: Recovery was seen in the water maze after day 19, and motor functions after 5 days was compared with the other two groups, with a significant statistical difference (p < 0.05). The survival rate of the engrafted cells in the Muse group was significantly higher than in the non-Muse group (p < 0.05) at day 69, and those cells showed positivity for NeuN (~57%) and MAP-2 (~41.6%). Muse cells could remain in the ICH brain, differentiate into neural-lineage cells and restore functions without inducing them into neuronal cells by gene introduction and cytokine treatment prior to transplantation. A simple collection of Muse cells and their supply to the brain in naïve state facilitates regenerative therapy in ICH.

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Acknowledgements

We thank Mark Inglin (University of Basel) for his editorial assistance.

Authors’ contributions

NS took part in conception and design, financial support, data analysis and interpretation and manuscript writing. KK and LW performed collection and/or assembly of data. MN carried out data analysis and interpretation. HU and SW made provision for study material. MD took part in conception and design, and the final approval of manuscript. HO was involved administrative support.

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Correspondence to Norihito Shimamura.

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We have no conflict of interest.

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The datasets during and/or analyzed during the current study are available from the corresponding author on reasonable request.

Funding

This work was supported by Grants-in-Aid for Scientific Research of Japan, grant number 26462149 for Norihito Shimamura.

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Shimamura, N., Kakuta, K., Wang, L. et al. Neuro-regeneration therapy using human Muse cells is highly effective in a mouse intracerebral hemorrhage model. Exp Brain Res 235, 565–572 (2017). https://doi.org/10.1007/s00221-016-4818-y

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  • DOI: https://doi.org/10.1007/s00221-016-4818-y

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