細胞の老化時計をリセットする技術(A Reset on the Cellular Aging Clock)

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2025-06-17 タフツ大学

細胞の老化時計をリセットする技術(A Reset on the Cellular Aging Clock)
“The fact that these bots become biologically younger than the adult cells they’re made from suggests that the process of organizing into a new shape alone can reset the cellular aging clock—without any genetic reprogramming,” says Gizem Gumuskaya. Here, an Anthrobot, depth colored, with a corona of cilia that provides its locomotion. Image: Gizem Gumuskaya

Tufts大学の研究チームは、ヒト気管細胞から成る微小生体ロボット「Anthrobots」を開発し、細胞が自律的に新たな構造を形成する過程で、生物学的年齢が若返る現象を発見しました。細胞は遺伝子操作なしで約9,000の遺伝子発現を変化させ、胚発生や古代的な発生プログラムに関連する遺伝子を再活性化。1例では、21歳のドナー細胞が25歳相当のエピジェネティック年齢から、Anthrobot化で18.7歳に若返りました。細胞の集合・再構築による形状や物理刺激が、老化マーカーを逆転させる可能性が示唆されています。

<関連情報>

アントロボットの形態学的、行動学的、トランスクリプトーム的ライフサイクル The Morphological, Behavioral, and Transcriptomic Life Cycle of Anthrobots

Gizem Gumuskaya, Nikolai Davey, Pranjal Srivastava, Andrew Bender, Léo Pio-Lopez, Douglas Hazel, Michael Levin
Advanced Science  Published: 06 June 2025
DOI:https://doi.org/10.1002/advs.202409330

Abstract

Fascinating aspects of morphogenetic and behavioral plasticity of living material are revealed by novel constructs that self-construct from genetically wild-type cells. Anthrobots arise from cultured adult human airway epithelial cells, developing, becoming self-motile, and acquiring neural repair capabilities without exogenous genetic circuits or inorganic scaffolds. Progress in bioengineering and regenerative medicine depends on developing a predictive understanding of collective cell behavior in novel circumstances. Toward that end, here a number of life cycle properties of Anthrobots, including their morphogenesis, maturation, and demise, are quantitatively characterized. A self-healing capacity and a remarkable reduction of epigenetic age upon morphogenesis are uncovered. Transcriptomic analysis reveals that assembling into Anthrobots drives a massive remodeling of gene expression relative to their cellular source, including several embryonic patterning genes, and a shift toward more evolutionarily ancient gene expression. These data reveal new aspects of engineered multicellular configurations, in which wild-type adult human cells self-assemble into an active living construct with its own distinct transcriptome, morphogenesis, and life history.

細胞遺伝子工学
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