Department of Functional Genomics and Cancer, Institut de Génétique et de Biologie Moléculaire et Cellulaire, Université de Strasbourg, CNRS UMR 7104, Inserm UMR-S 1258, Illkirch F-67400, France.
Proc Natl Acad Sci U S A. 2024 Aug 6;121(32):e2403770121. doi: 10.1073/pnas.2403770121. Epub 2024 Jul 29.
Time-restricted feeding (RF) is known to shift the phasing of gene expression in most primary metabolic tissues, whereas a time misalignment between the suprachiasmatic nucleus circadian clock (SCNCC) and its peripheral CCs (PCC's) is known to induce various pathophysiological conditions, including a metabolic syndrome. We now report that a unique "light therapy," involving different light intensities (T150-T700 lx, T75-T150 lx, and T350-T700 lx), realigns the RF-generated misalignment between the SCNCC and the PCC's. Using such high-light regime, we show that through shifting the SCNCC and its activity, it is possible in a RF and "night-shifted mouse model" to prevent/correct pathophysiologies (e.g., a metabolic syndrome, a loss of memory, cardiovascular abnormalities). Our data indicate that such a "high-light regime" could be used as a unique chronotherapy, for those working on night shifts or suffering from jet-lag, in order to realign their SCNCC and PCC's, thereby preventing the generation of pathophysiological conditions.
限时喂养(RF)已知会改变大多数主要代谢组织中基因表达的时相,而视交叉上核生物钟(SCNCC)与其外周中央时钟(PCC)之间的时间失准已知会引起各种病理生理状况,包括代谢综合征。我们现在报告一种独特的“光照疗法”,涉及不同的光照强度(T150-T700 lx、T75-T150 lx 和 T350-T700 lx),可纠正 RF 引起的 SCNCC 和 PCC 之间的失准。使用这种高光强方案,我们表明,通过改变 SCNCC 及其活动,在 RF 和“夜间移位小鼠模型”中有可能预防/纠正病理生理状况(例如代谢综合征、记忆丧失、心血管异常)。我们的数据表明,这种“高光强方案”可以用作独特的时间疗法,适用于上夜班或遭受时差反应的人,以重新调整他们的 SCNCC 和 PCC,从而防止病理生理状况的产生。