Single-cell transcriptomic analysis of the immune cell landscape in the aged mouse brain after ischemic stroke.
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2022-04-07
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Abstract
Background
Ischemic stroke is a medical emergency that primarily affects the elderly. A complex immune response in the post-stroke brain constitutes a key component of stroke pathophysiology. This study aimed to determine how stroke affects immune cell populations in the aged brain based on molecular profiles of individual cells.Methods
Single-cell RNA sequencing and a new transient ischemic stroke mouse model with late reperfusion were used.Results
We generated, for the first time, a composite picture of immune cell populations in the stroke aged brain at single-cell resolution. We discovered at least 6 microglial subsets in the stroke aged brain, including a potentially stroke-specific subtype. Moreover, we identified major cell subpopulations formed by infiltrated myeloid cells after stroke, and revealed their unique molecular profiles.Conclusions
This study provided the first scRNA-seq data set for immune cells in the stroke aged brain, and offered novel insights into post-stroke immune cell heterogeneity.Type
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Li, Xuan, Jingjun Lyu, Ran Li, Vaibhav Jain, Yuntian Shen, Ángela Del Águila, Ulrike Hoffmann, Huaxin Sheng, et al. (2022). Single-cell transcriptomic analysis of the immune cell landscape in the aged mouse brain after ischemic stroke. Journal of neuroinflammation, 19(1). p. 83. 10.1186/s12974-022-02447-5 Retrieved from https://hdl.handle.net/10161/24851.
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Huaxin Sheng
We have successfully developed various rodent models of brain and spinal cord injuries in our lab, such as focal cerebral ischemia, global cerebral ischemia, head trauma, subarachnoid hemorrhage, intracerebral hemorrhage, spinal cord ischemia and compression injury. We also established cardiac arrest and hemorrhagic shock models for studying multiple organ dysfunction. Our current studies focus on two projects. One is to examine the efficacy of catalytic antioxidant in treating cerebral ischemia and the other is to examine the efficacy of post-conditioning on outcome of subarachnoid hemorrhage induced cognitive dysfunction.
Wei Yang
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