Slow decrease in temperature produces readthrough transcripts in mammalian hibernation

Copyright © 2024 Elsevier Inc. All rights reserved..

Accumulating evidence suggests that various cellular stresses interfere with the end processing of mRNA synthesis and lead to the production of abnormally long transcripts, known as readthrough transcripts (RTTs), which extend beyond the termination sites. Small mammalian hibernators repeatedly enter a state referred to as deep torpor (DT), where the metabolic rate, respiration rate, and core body temperature become extremely low, which produces various types of cellular stresses and therefore induces RTTs. However, the types of stresses and processes around the DT that cause RTTs are unclear. In the present study, we showed that RTTs are produced from different gene loci in the livers of Syrian hamsters under DT and summer-like conditions. Moreover, in vitro analysis using hamster primary hepatocytes revealed that DT-specific RTTs are induced by a slow decline in temperature, as seen in body temperature in the entrance phase of DT, but not by rapid cold treatment or hypoxia. In addition, it was observed that RTTs were not elongated under a significantly cold temperature (4 °C). These results indicate that DT-specific RTTs are produced during the entrance phase of torpor by a slow decrease in body temperature.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:709

Enthalten in:

Biochemical and biophysical research communications - 709(2024) vom: 21. Apr., Seite 149837

Sprache:

Englisch

Beteiligte Personen:

Sone, Masamitsu [VerfasserIn]
Yamashita, Junpei [VerfasserIn]
Shigenobu, Shuji [VerfasserIn]
Yamaguchi, Yoshifumi [VerfasserIn]

Links:

Volltext

Themen:

Cold stress
Hibernation
Journal Article
Readthrough transcription
Syrian hamster

Anmerkungen:

Date Completed 15.04.2024

Date Revised 15.04.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.bbrc.2024.149837

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM370453581