Updated project metadata. This database provides TMT-labeled proteomic data of aorta (thoracic aorta), brain, heart, kidney, liver, lung, muscle (gastrocnemius muscle), and skin (abdominal skin) of 6, 15, 24, and 30 months old male C57BL/6 mice. In addition to the whole-tissue lysate, low-soluble protein-enriched fraction was also analyzed for heart, kidney, lung, muscle, and skin. Bulk RNA-Seq data are available for brain, heart, kidney, liver, lung, muscle, and skin. The tissues used for transcriptomic analysis and proteomic analysis of whole-tissue lysate and low-soluble protein-enriched fraction were collected from the same mice. All analyses were conducted with 4 biological replicates.