Ginsenoside Rg3 Prevents Oxidative Stress-Induced Astrocytic Senescence and Ameliorates Senescence Paracrine Effects on Glioblastoma

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Senescent astrocytes in aging brain express senescence-associated secretory phenotype (SASP) and link with increased brain aging and its related diseases. In order to determine whether ginsenosides ameliorate the astrocytic senescence in vitro, human astrocytic CRT cells and primary rat astrocytes were used in the present study. Ginsenosides Rg1, Re, Rb1 and Rg3 (5 mu g/mL) could effectively prevent the astrocytic senescence induced by H2O2 exposure. However, these ginsenosides did not reverse the astrocytic senescence. Importantly, senescent astrocytes herein produce SASP. The expression of major components of SASP, IL-6 and IL-8, are greatly increased in senescent astrocytes. Ginsenoside Rg3 (10 mu g/mL) effectively suppressed the expressions of IL-6 and IL-8, which is associated with regulations of NF-kB and p38MAPK activation. In addition, after incubation with Rg3, conditioned medium from senescent astrocytic CRT cells significantly decreased the ability to promote the proliferation of astrocytoma U373-MG, U87-MG and U251-MG cells compared with non-treated senescent samples. Similar patterns were confirmed in chemotherapy-induced glioblastoma senescent cells. The present study explored a potential candidate for amelioration of astrocytic senescence and SASP in brain aging, which provided a basis for developing strategies to reduce the dark side of senescence in normal or pathological aging process.
Publisher
MDPI AG
Issue Date
2017-09
Language
English
Article Type
Article
Keywords

CELLULAR SENESCENCE; SECRETORY PHENOTYPE; DNA-DAMAGE; IN-VITRO; CELLS; EXOSOMES; BRAIN; DELIVERY; EXPRESSION; CANCER

Citation

MOLECULES, v.22, no.9

ISSN
1420-3049
DOI
10.3390/molecules22091516
URI
http://hdl.handle.net/10203/226620
Appears in Collection
BS-Journal Papers(저널논문)BiS-Journal Papers(저널논문)
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