Telomerase activity is upregulated in the fat bodies of pre-diapause bumblebee queens (Bombus terrestris)

0509046 - BC 2020 RIV GB eng J - Článek v odborném periodiku
Koubová, Justina - Jehlík, Tomáš - Kodrík, Dalibor - Sábová, Michala - Šima, P. - Sehadová, Hana - Závodská, Radka - Čapková Frydrychová, Radmila
Telomerase activity is upregulated in the fat bodies of pre-diapause bumblebee queens (Bombus terrestris).
Insect Biochemistry and Molecular Biology. Roč. 115, DEC 01 (2019), č. článku 103241. ISSN 0965-1748. E-ISSN 1879-0240
Grant CEP: GA ČR(CZ) GA18-21200S; GA MŠMT LTAUSA17116
Grant ostatní: AV ČR(CZ) StrategieAV21/9
Program: StrategieAV
Institucionální podpora: RVO:60077344
Klíčová slova: telemerase * telomeres * ageing
Obor OECD: Biochemistry and molecular biology
Impakt faktor: 3.827, rok: 2019
Způsob publikování: Omezený přístup
https://www.sciencedirect.com/science/article/pii/S0965174819303558?via%3Dihub

The attrition of telomeres, the ends of eukaryote chromosomes, and activity of telomerase, the enzyme that restores telomere length, play a role in the ageing process and act as indicators of biological age. A notable feature of advanced eusocial insects is the longevity of reproductive individuals (queens and kings) compared to those from non-reproductive castes (workers and soldiers) within a given species, with a proposed link towards upregulation of telomerase activity in the somatic tissues of reproductive individuals. Given this, eusocial insects provide excellent model systems for research into ageing. We tested telomerase activity and measured telomere length in Bombus terrestris, which is a primitively eusocial insect species with several distinct features compared to advanced social insects. In somatic tissues, telomerase activity was upregulated only in the fat bodies of pre-diapause queens, and this upregulation was linked to heightened DNA synthesis. Telomere length was shorter in old queens compared to that in younger queens or workers. We speculate that (1) the upregulation of telomerase activity, together with DNA synthesis, is the essential step for intensifying metabolic activity in the fat body to build up a sufficient energy reserve prior to diapause, and that (2) the lifespan differences between B. terrestris workers and queens are related to the long diapause period of the queen. A possible relationship between telomere length regulation and TOR, FOXO, and InR as cell signaling components, was tested.
Trvalý link: http://hdl.handle.net/11104/0303676