Comparative proteome analysis of splenic lymphocytes in long-term high-fat diet and dietary supplement with lipoic acid mice.

Abstract:

:The objective of this investigation was to explore possible molecular changes for role of a high-fat diet (HFD)-induced oxidative stress in splenic lymphocytes, and whether a dietary lipoic acid (LA) supplement could attenuate these changes. Male C57BL/6 mice were fed one of three diets 10 weeks and outcome measures centered on parameters of oxidative stress and lymphocytes apoptosis in spleen. Two-dimensional gel electrophoresis was used to compare the proteomes of splenic lymphocytes with three dietary groups. Differentially expressed spots whose expression altered over three fold were identified by MALDI-TOF MS. In this study, HFD resulted in oxidative stress in mice spleen, and significantly increased apoptotic percentage of splenic lymphocytes. Bioinformatic evaluation results of MALDI-TOF MS showed that 20 differentially expressed protein spots were known to be involved in many processes associated with cell function, such as cytoskeleton, energy metabolism and oxidative stress, signal transduction and cell defense. In conclusion, these results indicate that HFD-induced oxidative stress could lead to the functional decline of splenic lymphocytes, and LA supplement attenuates the alterations of protein expression to maintain the basic biological processes.

journal_name

Cell Immunol

journal_title

Cellular immunology

authors

Cui J,Xiao Y,Shi Y,Le G,Miao X

doi

10.1016/j.cellimm.2010.06.002

subject

Has Abstract

pub_date

2010-01-01 00:00:00

pages

156-62

issue

2

eissn

0008-8749

issn

1090-2163

pii

S0008-8749(10)00150-4

journal_volume

264

pub_type

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