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Abstract Title:

The inhibitory impacts of Lactobacillus rhamnosus GG-derived extracellular vesicles on the growth of hepatic cancer cells.

Abstract Source:

Microb Pathog. 2017 Jun 17 ;110:1-6. Epub 2017 Jun 17. PMID: 28634130

Abstract Author(s):

Elham Behzadi, Hamideh Mahmoodzadeh Hosseini, Abbas Ali Imani Fooladi

Article Affiliation:

Elham Behzadi

Abstract:

Bacterial extracellular vesicles (EVs) have come forth into notice as possible important agent to mediate host-pathogen interactions. In this scientific research, the authors have tried to find out the effect of EVs derived from Lactobacillus rhamnosus GG (LDEVs) on the apoptosis induction in HepG2 cell line. The EVs were purified from the conditioned medium of Lactobacillus rhamnosus GG using ultrafiltration and confirmed by transmission electron microscopy (TEM). The HepG2 cells were treated with different concentrations of purified LDEVs and the cytotoxicity and their effects on the expression of bcl-2 and bax genes were assessed by the MTT assay and semi-quantitative RT-PCR, respectively. The MTT assay showed that only 100 μg/ml of LDEVs had a significant cytotoxic effect on cancer cells (p < 0.05). The apoptotic index (bax/bcl2 expression ratio) was significantly increased after treating with 50 and 100 μg/ml LDEVs (p < 0.05). Increased bax/bcl-2 ratio was led to cancer cell death.

Study Type : In Vitro Study

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