Quantitative proteomics to study aging in rabbit liver. (April 2020)

• Record Type: Journal Article
• Authors: Amin, Bushra; Ford, Katarena I.; Robinson, Renã A.S.
• Is Part Of: Mechanisms of ageing and development. Volume 187(2020)
• Publication Date: 2020-04
• Subjects: cPILOT -- Enhanced multiplexing -- Aging -- Liver -- Rabbit -- Metabolism -- Proteomics -- Oryctolagus cuniculus; Aging -- Periodicals; Developmental biology -- Periodicals; Aging -- Periodicals; Developmental Biology -- Periodicals; Vieillissement -- Périodiques; Biologie du développement -- Périodiques; Aging; Developmental biology; Periodicals; 612.67
• DOI: 10.1016/j.mad.2020.111227
• Languages: English
• ISSNs: 0047-6374

Abstract

Graphical abstract: Highlights: Rabbits are an underutilized however attractive model of aging. Multiplexing cPILOT strategy enabled simultaneous comparison of the liver proteome across young, middle, and old age rabbits. The liver proteome has dynamic changes across all ages. Fat, carbohydrate, and protein metabolism are the primary pathways altered with aging. Analysis of peripheral organs such as liver give insight to aging processes. Abstract: Aging globally effects cellular and organismal metabolism across a range of mammalian species, including humans and rabbits. Rabbits ( Oryctolagus cuniculus are an attractive model system of aging due to their genetic similarity with humans and their short lifespans. This model can be used to understand metabolic changes in aging especially in major organs such as liver where we detected pronounced variations in fat metabolism, mitochondrial dysfunction, and protein degradation. Such changes in the liver are consistent across several mammalian species however in rabbits the downstream effects of these changes have not yet been explored. We have applied proteomics to study changes in the liver proteins from young, middle, and old age rabbits using a multiplexing cPILOT strategy. This resulted in the identification of 2, 586 liver proteins, among which 45 proteins had significant p < 0.05 ) changes with aging. Seven proteins were differentially-expressed at all ages and include fatty acid binding protein, aldehyde dehydrogenase, enoyl-CoA hydratase, 3-hydroxyacyl CoA dehydrogenase, apolipoprotein C3, peroxisomal sarcosine oxidase, adhesion G-protein coupled receptor, and glutamate ionotropic receptor kinate. Insights to how alterations in metabolism affect protein expression in liver have been gained and demonstrate the utility of rabbit as a model of aging.