冬眠休眠研究フォーラム
Forum for Hibernation & Torpor Research

DOI https://doi.org/10.1038/s41598-025-21115-1
Title Artificially induced torpor during pregnancy impairs fetal growth in mice
Journal Sci Rep. 2025 Oct;15(1):37069.
Author Mitsue Hagihara,Takeshi Sakurai,Kazunari Miyamichi,Kengo Inada

Artificially induced torpor during pregnancy impairs fetal growth in mice

Posted by Kazunari Miyamichi, RIKEN BDR Lab for Comparative Connectomics
投稿日 / Date 2025/10/24

This is a small paper from our group showing that a QIH-like induced torpor state in mice is highly deleterious to embryo growth and health when induced during pregnancy. During early pregnancy, the torpor-like state completely blocked implantation, while induction during late pregnancy caused severe growth arrest and embryonic lethality. These findings demonstrate that thermoneutrality is essential for fetal health and development. It’s a great honor for me to co-author a paper with Sakurai-sensei for the first time!