下调和上调
蛋白质组
海马体
海马结构
生物
转录组
小胶质细胞
蛋白质组学
串联质量标签
细胞生物学
神经科学
基因表达
定量蛋白质组学
生物信息学
免疫学
生物化学
基因
炎症
作者
He Huang,Ashley J. Waardenberg,Mark E. Graham,Victor Anggono,Jocelyn Widagdo
标识
DOI:10.1002/pmic.202300276
摘要
Abstract Understanding the molecular changes associated with the aged brain forms the basis for developing potential strategies for slowing cognitive decline associated with normal aging. Focusing on the hippocampus, a critical brain region involved in learning and memory, we employed tandem mass tag methodology to investigate global proteomic changes that occur in advanced‐aged (20‐month) versus young (3‐month) C57BL/6 male mice. Our analysis revealed the upregulation of 236 proteins in the old hippocampal proteome, including those enriched within several age‐related processes, such as the adaptive immune response and molecular metabolic pathways, whereas downregulated proteins (88 in total) are mainly involved in axonogenesis and growth cone‐related processes. Categorizing proteins by cell‐type enrichment in the brain identified a general upregulation of proteins preferentially expressed in microglia, astrocytes, and oligodendrocytes. In contrast, proteins with neuron‐specific expression displayed an overall age‐related downregulation. By integrating our proteomic with our previously published transcriptomic data, we discovered a mild but significant positive correlation between mRNA and protein expression changes in the aged hippocampus. Therefore, this proteomic data is a valuable additional resource for further understanding age‐related molecular mechanisms.
科研通智能强力驱动
Strongly Powered by AbleSci AI