| First Author | Xu X | Year | 2023 |
| Journal | Int J Mol Sci | Volume | 24 |
| Issue | 8 | PubMed ID | 37108281 |
| Mgi Jnum | J:335259 | Mgi Id | MGI:7467946 |
| Doi | 10.3390/ijms24087117 | Citation | Xu X, et al. (2023) SM22alpha Deletion Contributes to Neurocognitive Impairment in Mice through Modulating Vascular Smooth Muscle Cell Phenotypes. Int J Mol Sci 24(8) |
| abstractText | Considerable evidence now indicates that cognitive impairment is primarily a vascular disorder. The depletion of smooth muscle 22 alpha (SM22alpha) contributes to vascular smooth muscle cells (VSMCs) switching from contractile to synthetic and proinflammatory phenotypes in the context of inflammation. However, the role of VSMCs in the pathogenesis of cognitive impairment remains undetermined. Herein, we showed a possible link between VSMC phenotypic switching and neurodegenerative diseases via the integration of multi-omics data. SM22alpha knockout (Sm22alpha(-/-)) mice exhibited obvious cognitive impairment and cerebral pathological changes, which were visibly ameliorated by the administration of AAV-SM22alpha. Finally, we confirmed that SM22alpha disruption promotes the expression of SRY-related HMG-box gene 10 (Sox10) in VSMCs, thereby aggravating the systemic vascular inflammatory response and ultimately leading to cognitive impairment in the brain. Therefore, this study supports the idea of VSMCs and SM22alpha as promising therapeutic targets in cognitive impairment to improve memory and cognitive decline. |
