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Total 22 results found since Jan 2013.

Metformin is a Novel Suppressor for Vimentin in Human Gastric Cancer Cell Line
In this study, AGS gastric cancer cells were treated with metformin and vimentin-specific siRNA (vim-siRNA) for 48 h. The impact of metformin and vim-siRNA on vimentin downregulation in AGS cells were analyzed by quantitative PCR and Western blot. Following treatment with metformin and vim-siRNA, cell motility, migration and invasion abilities of AGS cells were also analyzed. The results showed that inhibition of vimentin due to metformin was comparable with the vim-siRNA. Furthermore, wound-healing and invasion assays showed a significant decrease in migration and invasion of AGS cells following metformin and vim-siRNA tr...
Source: Molecular Medicine - February 18, 2022 Category: Molecular Biology Authors: Shiva Valaee Mehdi Shamsara Mohammad Mehdi Yaghoobi Source Type: research

Metformin inhibits growth of human non-small cell lung cancer cells via liver kinase B-1-independent activation of adenosine monophosphate-activated protein kinase.
Authors: Guo Q, Liu Z, Jiang L, Liu M, Ma J, Yang C, Han L, Nan K, Liang X Abstract Metformin, the most widely administered oral anti‑diabetic therapeutic agent, exerts its glucose-lowering effect predominantly via liver kinase B1 (LKB1)-dependent activation of adenosine monophosphate-activated protein kinase (AMPK). Accumulating evidence has demonstrated that metformin possesses potential antitumor effects. However, whether the antitumor effect of metformin is via the LKB1/AMPK signaling pathway remains to be determined. In the current study, the effects of metformin on proliferation, cell cycle progression, and...
Source: Molecular Medicine Reports - February 9, 2016 Category: Molecular Biology Tags: Mol Med Rep Source Type: research

Metformin Enhances Cisplatin Cytotoxicity by Suppressing Stat3 Activity Independently of the LKB1-AMPK Pathway.
This study demonstrated a correlation between Stat3 phosphorylation and cisplatin cytotoxicity using AS2 (PC14PE6/AS2)-derived cell lines (AS2/S3C) that contained constitutively active Stat3 plasmids as a model. A Stat3 inhibitor (JSI-124) enhanced the cisplatin sensitivity in AS2 cells, whereas metformin inhibited Stat3 phosphorylation and enhanced cisplatin cytotoxicity. By contrast, another AMPK activator (AICAR) failed to produce these effects. LKB1-AMPK silencing by siRNA or mTOR inhibition by rapamycin or pp242 did not alter the effect of metformin on Stat3 activity suppression, suggesting that metformin can modulate...
Source: American Journal of Respiratory Cell and Molecular Biology - March 22, 2013 Category: Molecular Biology Authors: Lin CC, Yeh HH, Huang WL, Yan JJ, Lai WW, Su WP, Chen HH, Su WC Tags: Am J Respir Cell Mol Biol Source Type: research

Metformin exerts anticancer effects through the inhibition of the Sonic hedgehog signaling pathway in breast cancer.
Abstract Metformin, a widely prescribed antidiabetic drug, has previously been shown to lower the risk of certain types of cancer, including that of breast cancer, and to improve prognosis. Its anticancer effects, which are mediated by the activation of AMP-activated protein kinase (AMPK), have become notable. The Sonic hedgehog (Shh) signaling pathway is involved in changes in mammary ducts and malignant transformation. The aim of the present study was to elucidate the role of the Shh pathway in mediating the anticancer effects of metformin and the correlation between AMPK and the Shh pathway. We investigated t...
Source: International Journal of Molecular Medicine - May 21, 2015 Category: Molecular Biology Authors: Fan C, Wang Y, Liu Z, Sun Y, Wang X, Wei G, Wei J Tags: Int J Mol Med Source Type: research

Metformin Promotes 2-Deoxy-2- 18 FFluoro-D-Glucose Uptake in Hepatocellular Carcinoma Cells Through FoxO1-Mediated Downregulation of Glucose-6-Phosphatase
ConclusionsWe propose that treatment of HCC cells with Met may be a useful strategy for improving the efficacy of [18F]FDG as a tracer for PET/CT imaging of HCC tumors in patients.
Source: Molecular Imaging and Biology - December 18, 2017 Category: Molecular Biology Source Type: research

Down ‐regulation of PKM2 enhances anticancer efficiency of THP on bladder cancer
This study aims to investigate the effect of down‐regulation of PKM2 on THP efficiency. Via inhibitor or siRNA, the effects of reduced PKM2 on the efficiency of THP were determined in 2 human and 1 murine bladder cancer cell lines, using MTT, cologenic and fluorescence approaches. Molecular mechanisms of PKM2 on THP sensitization were explored by probing p‐AMPK and p‐STAT3 levels via WB. Syngeneic orthotopic bladder tumour model was applied to evaluate this efficiency in vivo, analysed by Kaplan‐Meier survival curves, body and bladder weights plus immunohistochemistric tumour biomarkers. PKM2 was overexpressed in b...
Source: Journal of Cellular and Molecular Medicine - March 1, 2018 Category: Molecular Biology Authors: Qiongli Su, Ting Tao, Lei Tang, Jun Deng, Kwame Oteng Darko, Sichun Zhou, Mei Peng, Shanping He, Qing Zeng, Alex F. Chen, Xiaoping Yang Tags: ORIGINAL ARTICLE Source Type: research

Down-regulation of PKM2 enhances anticancer efficiency of THP on bladder cancer.
This study aims to investigate the effect of down-regulation of PKM2 on THP efficiency. Via inhibitor or siRNA, the effects of reduced PKM2 on the efficiency of THP were determined in 2 human and 1 murine bladder cancer cell lines, using MTT, cologenic and fluorescence approaches. Molecular mechanisms of PKM2 on THP sensitization were explored by probing p-AMPK and p-STAT3 levels via WB. Syngeneic orthotopic bladder tumour model was applied to evaluate this efficiency in vivo, analysed by Kaplan-Meier survival curves, body and bladder weights plus immunohistochemistric tumour biomarkers. PKM2 was overexpressed in bladder c...
Source: J Cell Mol Med - March 7, 2018 Category: Molecular Biology Authors: Su Q, Tao T, Tang L, Deng J, Darko KO, Zhou S, Peng M, He S, Zeng Q, Chen AF, Yang X Tags: J Cell Mol Med Source Type: research

AMPK inhibits Smad3-mediated autoinduction of TGF- β1 in gastric cancer cells.
AMPK inhibits Smad3-mediated autoinduction of TGF-β1 in gastric cancer cells. J Cell Mol Med. 2021 Feb 03;: Authors: Zou J, Li C, Jiang S, Luo L, Yan X, Huang D, Luo Z Abstract We have previously shown that adenine monophosphate-activated protein kinase (AMPK) regulates transforming growth factor β (TGF-β)-triggered Smad3 phosphorylation. Here we report that AMPK inhibits TGF-β1 production. First, metformin reduced mRNA levels of TGF-β1 in gastric cancer cells, in parallel to the decrease of its protein abundance. The effects were more prominent in the cells containing LKB1, an upstream kinase of...
Source: J Cell Mol Med - February 3, 2021 Category: Molecular Biology Authors: Zou J, Li C, Jiang S, Luo L, Yan X, Huang D, Luo Z Tags: J Cell Mol Med Source Type: research

Dapagliflozin alleviates cardiac fibrosis through suppressing EndMT and fibroblast activation via AMPK α/TGF-β/Smad signalling in type 2 diabetic rats
This study aimed to evaluate the effect of SGLT2 inhibitor dapagliflozin (DAPA) on DCM especially for cardiac fibrosis and explore the underlying mechanism. In vivo, the model of type 2 diabetic rats was built with high-fat feeding and streptozotocin injection. Untreated diabetic rats showed cardiac dysfunction, increased myocardial fibrosis and EndMT, which was attenuated after treatment with DAPA and metformin. In vitro, HUVECs and primary cardiac fibroblasts were treated with DAPA and exposed to high glucose (HG). HG-induced EndMT in HUVECs and collagen secretion of fibroblasts were markedly inhibited by DAPA. Up-regula...
Source: J Cell Mol Med - June 25, 2021 Category: Molecular Biology Authors: Jingjing Tian Mingjun Zhang Mengying Suo Dian Liu Xuyang Wang Ming Liu Jinyu Pan Tao Jin Fengshuang An Source Type: research

Metformin alleviates the calcification of aortic valve interstitial cells through activating the PI3K/AKT pathway in an AMPK dependent way
CONCLUSIONS: This study, for the first time, demonstrates that metformin can inhibit AVICs in vitro calcification by activating the PI3K/AKT signaling pathway; this suggests that metformin may provide a potential target for the treatment of CAVD. And the PI3K/AKT signaling pathway emerges as an important regulatory axis in the pathological mechanism of CAVD.PMID:34895136 | DOI:10.1186/s10020-021-00416-x
Source: Molecular Medicine - December 13, 2021 Category: Molecular Biology Authors: Qiao En Huang Zeping Wang Yuetang Wang Xu Wang Wei Source Type: research

Metformin protects against ethanol-induced liver triglyceride accumulation by the LKB1/AMPK/ACC pathway
CONCLUSION: Metformin protects against lipid formation in ALD by activating the LKB1/AMPK/ACC axis.PMID:35733070 | DOI:10.1007/s11033-022-07610-y
Source: Molecular Biology Reports - June 22, 2022 Category: Molecular Biology Authors: Fotian Xie Yuanming Zhong Dongmei Wang Kwok Fai So Jia Xiao Yi Lv Source Type: research