期刊
NEUROCHEMICAL RESEARCH
卷 30, 期 1, 页码 113-122出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s11064-004-9692-5
关键词
Alzheimer's disease; amyloid beta peptide; ICAT; 2D-LC/MS/MS
资金
- NIA NIH HHS [5P01-AG05119, 5P50-AG05144] Funding Source: Medline
- NATIONAL INSTITUTE ON AGING [P50AG005144, P01AG005119] Funding Source: NIH RePORTER
Increasing evidence supports a role for altered mitochondrial function in the pathogenesis of neuron degeneration in Alzheimer's disease (AD). Although several studies have examined the effect of amyloid beta peptide (Abeta), on activities of individual proteins in primary neuron cultures, there have been no studies of the effects of Abeta on the mitochondrial proteome. Here, we quantitatively measured changes in mitochondrial proteins of primary rat cortical neuron cultures exposed to 25 muM Abeta(25-35) for 16 h using isotope coded affinity tag (ICAT) labeling and 2-dimensional liquid chromatography/tandem mass spectrometry (2D-LC/MS/MS) which allows simultaneous identification and quantification of cysteine-containing proteins. The analysis of enriched mitochondrial fractions identified 10 proteins including sodium/potassium-transporting ATPase, cofilin, dihydropyrimidinase, pyruvate kinase and voltage dependent anion channel 1 that were statistically significantly (P < 0.05) altered in Abeta-treated cultures. Elevations of proteins associated with energy production suggest that cells undergoing Abeta-mediated apoptosis increase synthesis of proteins essential for ATP production and efflux in an attempt to maintain metabolic function.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据