Sirtuin-5 and Its Role in Peroxisomal Fatty Acid Oxidation in Mice
Author Information
Author(s): Goetzman Eric S., Zhang Yuxun, Bharathi Sivakama S., Bons Joanna, Rose Jacob P., Shah Samah, Dobrowolski Steven F., Sims-Lucas Sunder, Schilling Birgit
Primary Institution: Department of Pediatrics, School of Medicine, University of Pittsburgh
Hypothesis
Does SIRT5 regulate peroxisomal fatty acid oxidation and succinylation in response to dodecanedioic acid feeding?
Conclusion
SIRT5 is recruited to peroxisomes during dodecanedioic acid feeding but has minimal impact on the peroxisomal succinylome and fatty acid oxidation.
Supporting Evidence
- Feeding dodecanedioic acid increased SIRT5 levels in peroxisomes.
- SIRT5 knockout mice showed impaired fatty acid oxidation.
- Mass spectrometry identified SIRT5 interacting with peroxisomal proteins.
- Desuccinylation by SIRT5 had minimal effects on enzyme activity.
Takeaway
Researchers studied a protein called SIRT5 in mice to see how it affects fat breakdown in a part of the cell called the peroxisome. They found that SIRT5 moves to the peroxisome when the mice eat a certain type of fat, but it doesn't change how much fat gets broken down.
Methodology
Mice were fed a diet enriched with dodecanedioic acid, and various assays were performed to measure fatty acid oxidation and protein succinylation.
Limitations
The study did not quantify cytosolic SIRT5 in the context of dodecanedioic acid feeding.
Participant Demographics
Male mice were used in the study.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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