Polyamines mediate cellular energetics and lipid metabolism through mitochondrial respiration to facilitate virus replication.
Polyamines are critical cellular components that regulate a variety of processes, including translation, cell cycling, and nucleic acid metabolism. The polyamines, putrescine, spermidine, and spermine, are found abundantly within cells and are positively-charged at physiological pH. Polyamine metabo...
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2024-11-01
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| Series: | PLoS Pathogens |
| Online Access: | https://doi.org/10.1371/journal.ppat.1012711 |
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| author | Yazmin E Cruz-Pulido Natalie J LoMascolo Delaina May Jomana Hatahet Caroline E Thomas Andrea K W Chu Samantha P Stacey Maria Del Mar Villanueva Guzman Gregory Aubert Bryan C Mounce |
| author_facet | Yazmin E Cruz-Pulido Natalie J LoMascolo Delaina May Jomana Hatahet Caroline E Thomas Andrea K W Chu Samantha P Stacey Maria Del Mar Villanueva Guzman Gregory Aubert Bryan C Mounce |
| author_sort | Yazmin E Cruz-Pulido |
| collection | DOAJ |
| description | Polyamines are critical cellular components that regulate a variety of processes, including translation, cell cycling, and nucleic acid metabolism. The polyamines, putrescine, spermidine, and spermine, are found abundantly within cells and are positively-charged at physiological pH. Polyamine metabolism is connected to distinct other metabolic pathways, including nucleotide and amino acid metabolism. However, the breadth of the effect of polyamines on cellular metabolism remains to be fully understood. We recently demonstrated a role for polyamines in cholesterol metabolism, and following these studies, we measured the impact of polyamines on global lipid metabolism. We find that lipid droplets increase in number and size with polyamine depletion. We further demonstrate that lipid anabolism is markedly decreased, and lipid accumulation is due to reduced mitochondrial fatty acid oxidation. In fact, mitochondrial structure and function are largely ablated with polyamine depletion. To compensate, cells depleted of polyamines switch from aerobic respiration to glycolysis in a polyamine depletion-mediated Warburg-like effect. Finally, we show that inhibitors of lipid metabolism are broadly antiviral, suggesting that polyamines and lipids are promising antiviral targets. Together, these data demonstrate a novel role for polyamines in mitochondrial function, lipid metabolism, and cellular energetics. |
| format | Article |
| id | doaj-art-d983bd7d75674f19918999e146f2fd68 |
| institution | OA Journals |
| issn | 1553-7366 1553-7374 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS Pathogens |
| spelling | doaj-art-d983bd7d75674f19918999e146f2fd682025-08-20T02:21:46ZengPublic Library of Science (PLoS)PLoS Pathogens1553-73661553-73742024-11-012011e101271110.1371/journal.ppat.1012711Polyamines mediate cellular energetics and lipid metabolism through mitochondrial respiration to facilitate virus replication.Yazmin E Cruz-PulidoNatalie J LoMascoloDelaina MayJomana HatahetCaroline E ThomasAndrea K W ChuSamantha P StaceyMaria Del Mar Villanueva GuzmanGregory AubertBryan C MouncePolyamines are critical cellular components that regulate a variety of processes, including translation, cell cycling, and nucleic acid metabolism. The polyamines, putrescine, spermidine, and spermine, are found abundantly within cells and are positively-charged at physiological pH. Polyamine metabolism is connected to distinct other metabolic pathways, including nucleotide and amino acid metabolism. However, the breadth of the effect of polyamines on cellular metabolism remains to be fully understood. We recently demonstrated a role for polyamines in cholesterol metabolism, and following these studies, we measured the impact of polyamines on global lipid metabolism. We find that lipid droplets increase in number and size with polyamine depletion. We further demonstrate that lipid anabolism is markedly decreased, and lipid accumulation is due to reduced mitochondrial fatty acid oxidation. In fact, mitochondrial structure and function are largely ablated with polyamine depletion. To compensate, cells depleted of polyamines switch from aerobic respiration to glycolysis in a polyamine depletion-mediated Warburg-like effect. Finally, we show that inhibitors of lipid metabolism are broadly antiviral, suggesting that polyamines and lipids are promising antiviral targets. Together, these data demonstrate a novel role for polyamines in mitochondrial function, lipid metabolism, and cellular energetics.https://doi.org/10.1371/journal.ppat.1012711 |
| spellingShingle | Yazmin E Cruz-Pulido Natalie J LoMascolo Delaina May Jomana Hatahet Caroline E Thomas Andrea K W Chu Samantha P Stacey Maria Del Mar Villanueva Guzman Gregory Aubert Bryan C Mounce Polyamines mediate cellular energetics and lipid metabolism through mitochondrial respiration to facilitate virus replication. PLoS Pathogens |
| title | Polyamines mediate cellular energetics and lipid metabolism through mitochondrial respiration to facilitate virus replication. |
| title_full | Polyamines mediate cellular energetics and lipid metabolism through mitochondrial respiration to facilitate virus replication. |
| title_fullStr | Polyamines mediate cellular energetics and lipid metabolism through mitochondrial respiration to facilitate virus replication. |
| title_full_unstemmed | Polyamines mediate cellular energetics and lipid metabolism through mitochondrial respiration to facilitate virus replication. |
| title_short | Polyamines mediate cellular energetics and lipid metabolism through mitochondrial respiration to facilitate virus replication. |
| title_sort | polyamines mediate cellular energetics and lipid metabolism through mitochondrial respiration to facilitate virus replication |
| url | https://doi.org/10.1371/journal.ppat.1012711 |
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