Logo Medical Science Monitor

Call: +1.631.470.9640
Mon - Fri 10:00 am - 02:00 pm EST

Contact Us

Logo Medical Science Monitor Logo Medical Science Monitor Logo Medical Science Monitor

09 August 2018 : Laboratory Research

Inhibition of Epidermal Growth Factor Receptor (EGFR) Reduces Lipopolysaccharide (LPS)-Induced Activation and Inflammatory Cytokines in Hepatic Stellate Cells In Vitro

Yuanyuan Qian1BCD, Jibo Han2AEF, Liqin Zhou1BC, Qi Yu1BD, Jianjiang Xu2DE, Zhigang Jin1DF, Yifeng Yang1AB, Liqin Jiang2DEF*, Dayong Lou1AEF

DOI: 10.12659/MSM.909901

Med Sci Monit 2018; 24: LBR5533-5541


BACKGROUND: Epidermal growth factor receptor (EGFR) expression is associated with hepatic fibrogenesis. Activated hepatic stellate cells (HSCs) release inflammatory cytokines and extracellular matrix (ECM). The aim of this in vitro study was to investigate HSCs, activated by lipopolysaccharide (LPS), and the role of EGFR using the small molecule EGFR inhibitor, AG1478, and using knockdown of the EGFR gene using small interfering RNA (siRNA) cell transfection.

MATERIAL AND METHODS: HSCs, isolated from male Sprague-Dawley rats, were cultured and treated with and without LPS (100 ng/mL), with and without AG1478 (2.5 μM and 5.0 μM) Cell survival and proliferation were studied using an MTT assay. Western blot was used to measure levels of tumor necrosis factor (TNF)-α, interleukin (IL)-6, IκBα, cytoplasm and nuclear NFκB and EGFR in the cell lysates before and after small interfering RNA (siRNA) transfection. Quantitative reverse transcription polymerase chain reaction (RT-qPCR) was used to measure the mRNA levels of transforming growth factor (TGF)-β, Col-1, and α-smooth muscle actin (SMA). The Toll-like receptor 4 (TLR4) antagonist TAK-242 and the selective c-Src inhibitor, PP2 in LPS induced-EGFR phosphorylation was evaluated using Western blot.

RESULTS: Inhibition of EGFR decreased LPS-induced HSC proliferation and inflammatory cytokines. The TLR4 antagonist TAK-242, and the c-Src inhibitor, PP2 reduced EGFR activation of HSCs, indicating a possible role for the TLR4/c-Src signaling cascade in LPS-induced HSC activation.

CONCLUSIONS: Activation of HSCs by LPS in vitro, including the expression of inflammatory cytokines and mediators of fibrogenesis, were shown to be dependent on the expression of EGFR.

Keywords: Fibrosis, hepatic stellate cells, Lipopolysaccharides, Receptor, Epidermal Growth Factor


Weekly Editorial

25 October 2021 : Editorial

Editorial: The 2021 European Society of Cardiology (ESC) Guidelines on the Real-World Prevention of Atherosclerotic Cardiovascular Disease (ASCVD)

Dinah V. Parums

DOI: 10.12659/MSM.935172

Med Sci Monit 2021; 27:e935172


22 October 2021 : Clinical Research

A Novel Method for the Production of an Autologous Anti-Inflammatory and Anti-Catabolic Product (Cytorich) ...

Med Sci Monit In Press; DOI: 10.12659/MSM.934365  

11 October 2021 : Clinical Research

Clinical Features and Temporal Lung Radiographic Changes in 25 Patients Recovering from COVID-19 Pneumonia:...

Med Sci Monit In Press; DOI: 10.12659/MSM.933381  

08 September 2021 : Clinical Research

Acceptance of COVID-19 Vaccination and Its Associated Factors Among Cancer Patients Attending the Oncology ...

Med Sci Monit In Press; DOI: 10.12659/MSM.932788  

In Press

27 Oct 2021 : Clinical Research

Use of the Braden Scale to Predict Injury Severity in Mass Burn Casualties

Med Sci Monit In Press; DOI: 10.12659/MSM.934039  

27 Oct 2021 : Database Analysis

Low Expression of Long Noncoding RNA SLC26A4 Antisense RNA 1 Is an Independent Prognostic Biomarker and Cor...

Med Sci Monit In Press; DOI: 10.12659/MSM.934522  

27 Oct 2021 : Database Analysis

A Novel Predictive Model Incorporating Ferroptosis-Related Gene Signatures for Overall Survival in Patients...

Med Sci Monit In Press; DOI: 10.12659/MSM.934050  

27 Oct 2021 : Meta-Analysis

Utility of Pretreatment Blood Platelet-To-Lymphocyte Ratio in Prediction of Clinical Outcomes and Chemosens...

Med Sci Monit In Press; DOI: 10.12659/MSM.933449  

Most Viewed Current Articles

20 Mar 2020 : Clinical Research

Social Capital and Sleep Quality in Individuals Who Self-Isolated for 14 Days During the Coronavirus Diseas...

DOI :10.12659/MSM.923921

Med Sci Monit 2020; 26:e923921

15 Apr 2020 : Clinical Research

Psychological Impact and Coping Strategies of Frontline Medical Staff in Hunan Between January and March 20...

DOI :10.12659/MSM.924171

Med Sci Monit 2020; 26:e924171

05 May 2020 : Review article

An Evidence Based Perspective on mRNA-SARS-CoV-2 Vaccine Development

DOI :10.12659/MSM.924700

Med Sci Monit 2020; 26:e924700

26 Apr 2020 : Clinical Research

Comparison of Prevalence and Associated Factors of Anxiety and Depression Among People Affected by versus P...

DOI :10.12659/MSM.924609

Med Sci Monit 2020; 26:e924609

Your Privacy

We use cookies to ensure the functionality of our website, to personalize content and advertising, to provide social media features, and to analyze our traffic. If you allow us to do so, we also inform our social media, advertising and analysis partners about your use of our website, You can decise for yourself which categories you you want to deny or allow. Please note that based on your settings not all functionalities of the site are available. View our privacy policy.

Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750