Abstract
The CD4+CD25+ regulatory T cells (Tregs), an innate immunomodulator, suppress cerebral inflammation and maintain immune homeostasis in multiple central nervous system injury, but its role in intracerebral hemorrhage (ICH) has not been fully characterized. This study investigated the effect of Tregs on brain injury using the mouse ICH model, which is established by autologous blood infusion. The results showed that tail intravenous injection of Tregs significantly reduced brain water content and Evans blue dye extravasation of perihematoma at day (1, 3 and 7), and improved short- and long-term neurological deficits following ICH in mouse model. Tregs treatment reduced the content of pro-inflammatory cytokines interleukin (IL)-1β, IL-6, tumor necrosis factor-α, and malondialdehyde, while increasing the superoxide dismutase (SOD) enzymatic activity at day (1, 3 and 7) following ICH. Furthermore, Tregs treatment obviously reduced the number of NF-κB+, IL-6+, TUNEL+ and active caspase-3+ cells at day 3 after ICH. These results indicate that adoptive transfer of Tregs may provide neuroprotection following ICH in mouse models.
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Acknowledgments
The national natural science foundation of China (NSFC) (Nos. 81471212 and 81301018) and natural science foundation of Shandong province of China (No. ZR2014HQ027) supported this work.
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ZZ, XY and BS conceived the project and designed experiments. LM, HY, WW, YW, and MY performed the experiment. LM, ZZ and BS analyzed the results. ZZ wrote the manuscript with contributions from LM, BS and XY. XY revised the manuscript.
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Mao, LL., Yuan, H., Wang, Ww. et al. Adoptive Regulatory T-cell Therapy Attenuates Perihematomal Inflammation in a Mouse Model of Experimental Intracerebral Hemorrhage. Cell Mol Neurobiol 37, 919–929 (2017). https://doi.org/10.1007/s10571-016-0429-1
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DOI: https://doi.org/10.1007/s10571-016-0429-1