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Circadian Rhythms and Gene Regulation02:19

Circadian Rhythms and Gene Regulation

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The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent...
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Aging01:26

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Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
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The innate immune response is an immediate and non-specific response against pathogens, acting swiftly to prevent the spread of infections. The primary cells involved in this response are phagocytes and natural killer (NK) cells.
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Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
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Updated: Sep 10, 2025

The Use of Mouse Splenocytes to Assess Pathogen-associated Molecular Pattern Influence on Clock Gene Expression
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生まれながらの免疫細胞サブタイプの変化は,表遺伝的時計,炎症および健康結果と相関する.

Xiaolong Guo1, Josephine A Robertson2, Andrea Aparicio3

  • 1Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 320 Yue Yang Road, Shanghai, 200031, China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|August 27, 2025
PubMed
まとめ

生まれながらの免疫細胞のシフトと 核化された赤血球は 表遺伝的な時計から 生物学的年齢の推定に影響します この 発見 は,血液 細胞 の 異質 性 に 関する 理解 を 拡大 し ます.

キーワード:
DNAメチル化老化バイオマーカーエピジェネティック・クロック健康への影響炎上する生まれつきの免疫系

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科学分野:

  • 免疫学
  • ゲロントロジー
  • エピジェネティクス

背景:

  • 血液中の表遺伝子時計は 生物学的年齢を推定し 死亡率と相関しています
  • 以前の研究では 適応性免疫系の異質性が 表遺伝的な時計に与える影響に焦点を当てていました
  • 生まれつきの免疫系の異質性が表遺伝的な時計に与える影響は,まだほとんど研究されていない.

研究 の 目的:

  • 生まれながらの免疫細胞内の異質性が表遺伝的時計の推定にどのように影響するか調査する.
  • 免疫細胞のシフト,炎症,全死因との関連を調べる
  • 核化した赤血球のような細胞が 健康に与える影響を調べる

主な方法:

  • 19種類の免疫細胞の高解像度DNAメチル化基準パネルを使用した.
  • モノサイト,自然キラー細胞,中性粒子を含んでいる.
  • トランスクリプトミクスとメタボロミクスデータを用いて,炎症との単細胞異質性の関連を検証した.

主要な成果:

  • 生まれながらの免疫細胞サブタイプ (単細胞,NK細胞,中性細胞) のシフトは,表遺伝時計の加速と炎症と相関しています.
  • 単細胞の異質性は炎症と関連しており,マルチオミックデータによって検証されています.
  • 核状の赤血球のような細胞は炎症,エリトロポエーゼの機能障害と関連しており,主要な死亡リスク因子です.

結論:

  • 適応性免疫系を超えた 生まれつきの免疫細胞の異質性は 表遺伝的時計の精度に影響します
  • 生まれながらの免疫細胞と赤血球のような細胞の異質性は,炎症と死亡率と関連しています.
  • 血液細胞の組成が 生物学的老化と健康上の結果に 与える影響が 広く示されています