Quantitative and Kinetic Proteomics Reveal ApoE Isoform-dependent Proteostasis Adaptations in Mouse Brain.

Autor: Zuniga NR; Department of Chemistry and Biochemistry, College of Computational, Physical, and Mathematical Sciences, Brigham Young University, Provo, UT, USA., Earls NE; Department of Chemistry and Biochemistry, College of Computational, Physical, and Mathematical Sciences, Brigham Young University, Provo, UT, USA., Denos AEA; Department of Chemistry and Biochemistry, College of Computational, Physical, and Mathematical Sciences, Brigham Young University, Provo, UT, USA., Elison JM; Department of Chemistry and Biochemistry, College of Computational, Physical, and Mathematical Sciences, Brigham Young University, Provo, UT, USA., Jones BS; Department of Chemistry and Biochemistry, College of Computational, Physical, and Mathematical Sciences, Brigham Young University, Provo, UT, USA., Smith EG; Department of Chemistry and Biochemistry, College of Computational, Physical, and Mathematical Sciences, Brigham Young University, Provo, UT, USA., Moran NG; Department of Chemistry and Biochemistry, College of Computational, Physical, and Mathematical Sciences, Brigham Young University, Provo, UT, USA., Brown KL; Department of Chemistry and Biochemistry, College of Computational, Physical, and Mathematical Sciences, Brigham Young University, Provo, UT, USA., Romero GM; Department of Chemistry and Biochemistry, College of Computational, Physical, and Mathematical Sciences, Brigham Young University, Provo, UT, USA., Hyer CD; Department of Chemistry and Biochemistry, College of Computational, Physical, and Mathematical Sciences, Brigham Young University, Provo, UT, USA., Wagstaff KB; Department of Chemistry and Biochemistry, College of Computational, Physical, and Mathematical Sciences, Brigham Young University, Provo, UT, USA., Almughamsi HM; Department of Chemistry and Biochemistry, College of Computational, Physical, and Mathematical Sciences, Brigham Young University, Provo, UT, USA.; Department of Chemistry, College of Science, Taif University, Taif, Saudi Arabia., Transtrum MK; Department of Physics and Astronomy, College of Computational, Physical, and Mathematical Sciences, Brigham Young University, Provo, UT, USA., Price JC; Department of Chemistry and Biochemistry, College of Computational, Physical, and Mathematical Sciences, Brigham Young University, Provo, UT, USA.
Jazyk: angličtina
Zdroj: BioRxiv : the preprint server for biology [bioRxiv] 2024 Aug 14. Date of Electronic Publication: 2024 Aug 14.
DOI: 10.1101/2024.08.13.607719
Abstrakt: Apolipoprotein E (ApoE) polymorphisms modify the risk of neurodegenerative disease with the ApoE4 isoform increasing and ApoE2 isoform decreasing risk relative to the 'wild-type control' ApoE3 isoform. To elucidate how ApoE isoforms alter the proteome, we measured relative protein abundance and turnover in transgenic mice expressing a human ApoE gene (isoform 2, 3, or 4). This data provides insight into how ApoE isoforms affect the in vivo synthesis and degradation of a wide variety of proteins. We identified 4849 proteins and tested for ApoE isoform-dependent changes in the homeostatic regulation of ~2700 ontologies. In the brain, we found that ApoE4 and ApoE2 both lead to modified regulation of mitochondrial membrane proteins relative to the wild-type control ApoE3. In ApoE4 mice, this regulation is not cohesive suggesting that aerobic respiration is impacted by proteasomal and autophagic dysregulation. ApoE2 mice exhibited a matching change in mitochondrial matrix proteins and the membrane which suggests coordinated maintenance of the entire organelle. In the liver, we did not observe these changes suggesting that the ApoE-effect on proteostasis is amplified in the brain relative to other tissues. Our findings underscore the utility of combining protein abundance and turnover rates to decipher proteome regulatory mechanisms and their potential role in biology.
Databáze: MEDLINE
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