当前位置： SCI文献检索 > Probiotics and Antimicrobial Proteins期刊下所有文献 > Cell-Free Culture Supernatant of Probiotic Lactobacillus fermentum Protects Against H2O2-Induced Premature Senescence by Suppressing ROS-Akt-mTOR Axis in Murine Preadipocytes.

Cell-Free Culture Supernatant of Probiotic Lactobacillus fermentum Protects Against H2O2-Induced Premature Senescence by Suppressing ROS-Akt-mTOR Axis in Murine Preadipocytes.

Abstract：

:Information regarding cellular anti-senescence attributes of probiotic bacteria vis-à-vis modulation of senescence-associated secretory phenotype (SASP) and mTOR signaling is very limited. The present study assessed anti-senescence potential of secretory metabolites of probiotic Lactobacillus fermentum (Lact. fermentum) using H2O2-induced model of senescence in 3T3-L1 preadipocytes. Application of H2O2-induced cellular senescence characterized by increased cell size and SA-β-gal activity, activation of SASP and reactive oxygen species (ROS), DNA damage response and induction of cell cycle inhibitors (p53/p21WAF1/p16INK4a). Further, a robust stimulation of the PI3K/Akt/mTOR pathway and AMPK signaling was also observed in H2O2-treated cells. However, exposure of cells to cell-free supernatant of Lact. fermentum significantly attenuated phosphorylation of PI3K/Akt/mTOR pathway and alleviated senescence markers p53, p21WAF1, SA-β-gal, p38MAPK, iNOS, cox-2, ROS, NF-κB, and DNA damage response. These results provide evidence that secretory metabolites of Lact. fermentum can mitigate the development as well as severity of stress-induced senescence thereby indicating its utility for use as anti-aging or age-delaying agent.

journal_name

Probiotics Antimicrob Proteins

journal_title

Probiotics and antimicrobial proteins

authors

Kumar R,Sharma A,Gupta M,Padwad Y,Sharma R

doi

10.1007/s12602-019-09576-z

subject

Has Abstract

pub_date

2020-06-01 00:00:00

pages

563-576

issue

2

eissn

1867-1306

issn

1867-1314

pii

10.1007/s12602-019-09576-z

journal_volume

12

pub_type

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