Proteomic analysis reveals that the protective effects of ginsenoside Rb1 are associated with the actin cytoskeleton in β-amyloid-treated neuronal cells.
BACKGROUND
The ginsenoside Rb1 (Rb1) is the most abundant compound in the root of Panax ginseng. Recent studies have shown that Rb1 has a neuroprotective effect. However, the mechanisms underlying this effect are still unknown.


METHODS
We used stable isotope labeling with amino acids in cell culture, combined with quantitative mass spectrometry, to explore a potential protective mechanism of Rb1 in β-amyloid-treated neuronal cells.


RESULTS
A total of 1,231 proteins were commonly identified from three replicate experiments. Among these, 40 proteins were significantly changed in response to Rb1 pretreatment in β-amyloid-treated neuronal cells. Analysis of the functional enrichments and protein interactions of altered proteins revealed that actin cytoskeleton proteins might be linked to the regulatory mechanisms of Rb1. The CAP1, CAPZB, TOMM40, and DSTN proteins showed potential as molecular target proteins for the functional contribution of Rb1 in Alzheimer's disease (AD).


CONCLUSIONS
Our proteomic data may provide new insights into the protective mechanisms of Rb1 in AD.
Department of Physiology, School of Medicine, Kyung Hee University, Seoul, Korea.
Ji Yeon
JY
Hwang
Department of Physiology, School of Medicine, Kyung Hee University, Seoul, Korea.
Ji Seon
JS
Shim
Department of Physiology, School of Medicine, Kyung Hee University, Seoul, Korea.
Min-Young
MY
Song
Department of Clinical Pharmacology, School of Medicine, Kyung Hee University, Seoul, Korea.
Sung-Vin
SV
Yim
Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, Eumseong, Korea.
Seung Eun
SE
Lee
Department of Physiology, School of Medicine, Kyung Hee University, Seoul, Korea.
Kang-Sik
KS
Park
Alzheimer's disease; actin skeleton; ginsenoside Rb1; mass spectrometry; β-amyloid