TY - JOUR
T1 - Quantitative protein profiling of hippocampus during human aging
AU - Xu, Benhong
AU - Gao, Yanpan
AU - Zhan, Shaohua
AU - Xiong, Feng
AU - Qui, Wenying
AU - quan, Xiaojing
AU - Wang, Tao
AU - Wang, Naili
AU - Zhang, Di
AU - Yang, Qian
AU - Wang, Renzhi
AU - Bao, Xinjie
AU - Dou, Wanchen
AU - Tian, Rui
AU - Meng, Shu
AU - Gai, Wei-Ping
AU - Huang, Yue
AU - Yan, Xiao-Xin
AU - Ge, Wei
AU - Ma, Chao
PY - 2016/3/1
Y1 - 2016/3/1
N2 - The hippocampus appears commonly affected by aging and various neurologic disorders in humans, whereas little is known about age-related change in overall protein expression in this brain structure. Using the 4-plex tandem mass tag labeling, we carried out a quantitative proteomic study of the hippocampus during normal aging using postmortem brains from Chinese subjects. Hippocampal samples from 16 subjects died of non-neurological/psychiatric diseases were divided into 4 age groups: 22-49, 50-69, 70-89, and >90. Among 4582 proteins analyzed, 35 proteins were significantly elevated, whereas 25 proteins were downregulated, along with increasing age. Several upregulated proteins, including transgelin, vimentin, myosin regulatory light polypeptide 9, and calcyphosin, were further verified by quantitative Western blot analysis of hippocampal tissues from additional normal subjects. Bioinformatic analysis showed that the upregulated and downregulated proteins were largely involved in several important protein-protein interaction networks. Proteins in the electron transport chain and synaptic vesicle fusion pathway were consistently downregulated with aging, whereas proteins associated with Alzheimer's disease showed little change. Our study demonstrates substantial protein profile changes in the human hippocampus during aging, which could be of relevance to age-related loss of hippocampal functions.
AB - The hippocampus appears commonly affected by aging and various neurologic disorders in humans, whereas little is known about age-related change in overall protein expression in this brain structure. Using the 4-plex tandem mass tag labeling, we carried out a quantitative proteomic study of the hippocampus during normal aging using postmortem brains from Chinese subjects. Hippocampal samples from 16 subjects died of non-neurological/psychiatric diseases were divided into 4 age groups: 22-49, 50-69, 70-89, and >90. Among 4582 proteins analyzed, 35 proteins were significantly elevated, whereas 25 proteins were downregulated, along with increasing age. Several upregulated proteins, including transgelin, vimentin, myosin regulatory light polypeptide 9, and calcyphosin, were further verified by quantitative Western blot analysis of hippocampal tissues from additional normal subjects. Bioinformatic analysis showed that the upregulated and downregulated proteins were largely involved in several important protein-protein interaction networks. Proteins in the electron transport chain and synaptic vesicle fusion pathway were consistently downregulated with aging, whereas proteins associated with Alzheimer's disease showed little change. Our study demonstrates substantial protein profile changes in the human hippocampus during aging, which could be of relevance to age-related loss of hippocampal functions.
KW - Alzheimer's disease
KW - Brain aging
KW - Electron transport chain
KW - Proteomics
KW - Synaptic vesicle fusion
UR - http://www.scopus.com/inward/record.url?scp=84959291283&partnerID=8YFLogxK
U2 - 10.1016/j.neurobiolaging.2015.11.029
DO - 10.1016/j.neurobiolaging.2015.11.029
M3 - Article
SN - 0197-4580
VL - 39
SP - 46
EP - 56
JO - Neurobiology of Aging
JF - Neurobiology of Aging
ER -