Abstract
Queen honeybees (Apis mellifera) have much longer lifespans than worker bees. Energy-regulated molecules in the trophocytes and fat cells of workers during aging have been determined, but are unknown in queen bees. In the present study, energy-regulated molecules were evaluated in the trophocytes and fat cells of young and old queen bees. Adenosine monophosphate-activated protein kinase α2 (AMPK-α2), phosphorylated AMPK-α2 (pAMPK-α2), and cAMP-specific phosphodiesterases activity increased with aging. The pAMPK-α2/AMPK-α2 ratio and AMPK activity; adenosine triphosphate (ATP), adenosine diphosphate (ADP), and adenosine monophosphate (AMP) concentrations; the ADP/ATP ratio and the AMP/ATP ratio; the cyclic adenosine monophosphate concentration; forkhead box protein O expression; Silent information regulator T1 (SirT1) expression and activity; and peroxisome proliferator-activated receptor-α (PPAR-α) expression were not significantly different between young and old queen bees. These results show that energy-regulated molecules maintain a youthful status in the trophocytes and fat cells of queen bees during aging. These cells seem to have longevity-promoting mechanisms and may clarify the secret of longevity in queen bees.
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Abbreviations
- AMPK:
-
AMP-activated protein kinase
- pAMPK:
-
Phosphorylated AMP-activated protein kinase
- cAMP:
-
Cyclic adenosine monophosphate
- PDE:
-
cAMP-specific phosphodiesterases
- ATP:
-
Adenosine triphosphate
- ADP:
-
Adenosine diphosphate
- AMP:
-
Adenosine monophosphate
- FoxO:
-
Forkhead box protein O
- SirT1:
-
Silent information regulator T1
- PPAR-α:
-
Peroxisome proliferator-activated receptor-α
- ∆ψm:
-
Mitochondrial membrane potential
- NAD+ :
-
Nicotinamide adenine dinucleotide oxidized form
- NADH:
-
Nicotinamide adenine dinucleotide reduced form
- ND1:
-
NADH dehydrogenase 1
- ATR:
-
Ambient temperature reduction
- CR:
-
Caloric restriction
- LKB1:
-
Liver kinase B1
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Acknowledgments
This work was supported by a CMRPD 1A0493 grant from Chang Gung Memorial Hospital, Linkou, Taiwan.
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Hsu, CY., Hu, TH. Energy-regulated molecules maintain young status in the trophocytes and fat cells of old queen honeybees. Biogerontology 15, 389–400 (2014). https://doi.org/10.1007/s10522-014-9509-0
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DOI: https://doi.org/10.1007/s10522-014-9509-0