| First Author | Zou C | Year | 2020 |
| Journal | Cell Rep | Volume | 33 |
| Issue | 10 | Pages | 108447 |
| PubMed ID | 33296651 | Mgi Jnum | J:299265 |
| Mgi Id | MGI:6488848 | Doi | 10.1016/j.celrep.2020.108447 |
| Citation | Zou C, et al. (2020) Reduction of mNAT1/hNAT2 Contributes to Cerebral Endothelial Necroptosis and Abeta Accumulation in Alzheimer's Disease. Cell Rep 33(10):108447 |
| abstractText | The contribution and mechanism of cerebrovascular pathology in Alzheimer's disease (AD) pathogenesis are still unclear. Here, we show that venular and capillary cerebral endothelial cells (ECs) are selectively vulnerable to necroptosis in AD. We identify reduced cerebromicrovascular expression of murine N-acetyltransferase 1 (mNat1) in two AD mouse models and hNat2, the human ortholog of mNat1 and a genetic risk factor for type-2 diabetes and insulin resistance, in human AD. mNat1 deficiency in Nat1(-/-) mice and two AD mouse models promotes blood-brain barrier (BBB) damage and endothelial necroptosis. Decreased mNat1 expression induces lysosomal degradation of A20, an important regulator of necroptosis, and LRP1beta, a key component of LRP1 complex that exports Abeta in cerebral ECs. Selective restoration of cerebral EC expression of mNAT1 delivered by adeno-associated virus (AAV) rescues cerebromicrovascular levels of A20 and LRP1beta, inhibits endothelial necroptosis and activation, ameliorates mitochondrial fragmentation, reduces Abeta deposits, and improves cognitive function in the AD mouse model. |
