臓器老化の「分子映画」、全身老化の駆動因子として血管ハブを特定(First “Molecular Movie” of Organ Aging Uncovers Vascular Hub as Key Driver of Systemic Aging)

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2025-07-30 中国科学院(CAS)

中国科学院の北京基因組研究所などの研究チームは、13臓器・76人から12,700超のタンパク質を解析し、加齢の分子変化を可視化する「分子映画」を初めて作成した。研究は全身の老化が主に血管、特に大動脈から放出される特定タンパク質(GAS6など)により駆動されることを示し、老化は独立した細胞時計ではなく、血管を司令塔とする全身ネットワークであると結論づけた。AIで各臓器の「老化時計」も構築され、大動脈と副腎が30歳ごろから最も早く老化を始めることが判明した。

臓器老化の「分子映画」、全身老化の駆動因子として血管ハブを特定(First “Molecular Movie” of Organ Aging Uncovers Vascular Hub as Key Driver of Systemic Aging)
GAS6 rises with age in human aorta: young (left) vs. aged (right) (Image by Profs. LIU Guanghui and ZHANG Weiqi’s labs)

<関連情報>

寿命50年にわたる包括的なヒトプロテオーム・プロファイルから、老化の軌跡と特徴が明らかになった Comprehensive human proteome profiles across a 50-year lifespan reveal aging trajectories and signatures

Yingjie Ding ∙ Yuesheng Zuo,, ∙ Bin Zhang ∙ … ∙ Jing Qu ∙ Weiqi Zhang ∙ Guang-Hui Liu
Cell  Published:July 25, 2025
DOI:https://doi.org/10.1016/j.cell.2025.06.047

Highlights

  • A proteomic blueprint of human organs across 50-year aging stages
  • Transcriptome-proteome decoupling and proteostasis failure mark aged tissues
  • Human organ proteomic clocks reveal aging inflection and asynchrony
  • Circulating senoproteins contribute to vascular and systemic aging

Summary

Proteins are the cornerstone of life. However, the proteomic blueprint of aging across human tissues remains uncharted. Here, we present a comprehensive proteomic and histological analysis of 516 samples from 13 human tissues spanning five decades. This dynamic atlas reveals widespread transcriptome-proteome decoupling and proteostasis decline, characterized by amyloid accumulation. Based on aging-associated protein changes, we developed tissue-specific proteomic age clocks and characterized organ-level aging trajectories. Temporal analysis revealed an aging inflection around age 50, with blood vessels being a tissue that ages early and is markedly susceptible to aging. We further defined a plasma proteomic signature of aging that matches its tissue origins and identified candidate senoproteins, including GAS6, driving vascular and systemic aging. Together, our findings lay the groundwork for a systems-level understanding of human aging through the lens of proteins.

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