Development of hepatocellular carcinoma (HCC) is accompanied by a continuous increase in generation of reactive oxygen species (ROS). TNF-a was used in murine hepatocytes as stimulus to identify the primary source of ROS generation. Using specific inhibitors targeting the different complexes of the respiratory chain we detected the mitochondria as main producer of ROS. TNF-a altered mitochondrial integrity by mimicking a mild uncoupling effect in liver cells. siRNA mediated downregulation of essential assembly factors for complex I and complex III led to an inhibition of ROS production. Therefore, ROS is generated by the mitochondrial respiratory chain upon TNF-a stimulation. ROS activated NF-?B and subsequently enhanced migration of liver cells. Thus, we identified complex I and complex III of the respiratory chain as point of ROS release after TNF-a treatment in hepatocytes which enhances cell migration by activating NF-?B signaling.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.freeradbiomed.2014.10.765 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Prognostic assessment of early-stage liver cirrhosis induced by HCV using an integrated model of CX3CR1-associated immune infiltration genes.
Sci Rep
January 2025
Division of Liver Surgery, Department of General Surgery, West China Hospital, Si Chuan University, Chengdu, 610041, China.
Chemokine (C-X3-C motif) Receptor 1 (CX3CR1) primarily mediates the chemotaxis and adhesion of immune cells. However, its role in hepatitis C virus (HCV)-induced early-stage liver cirrhosis remains unexplored. GSE15654 was downloaded from the GEO database.
View Article and Find Full Text PDFCharacterization of NK Cells Using Single-Cell RNA Sequencing in Patients With Acute-On-Chronic Liver Failure.
J Gastroenterol Hepatol
January 2025
Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Background And Aim: Acute-on-chronic liver failure (ACLF) is characterized by fast progression and high mortality, with systemic inflammation and immune paralysis as its key events. While natural killer (NK) cells are key innate immune cells, their unique function and subpopulation heterogeneity in ACLF have not been fully elucidated. This study aimed to investigate the characteristics of NK cell subsets in the peripheral blood of patients with ACLF and determine their roles in the inflammatory responses.
View Article and Find Full Text PDFLysosome-targeted dual-locked NIR fluorescent probe for visualization of HS and viscosity in drug-induced liver injury and tumor models.
Anal Chim Acta
February 2025
Department of Radiology, Changhai Hospital, Naval Medical University, Changhai Road 168, Shanghai 200433, China. Electronic address:
Background: Lysosomes, as an indispensable subcellular organelle have numerous physiological functions closely associated with HS and viscosity, and accurate assessment of HS/viscosity fluctuations in lysosomes is essential for gaining a comprehensive understanding of lysosome-related physiological activities and pathological processes. The previous single-response fluorescent probes for either HS or viscosity alone have the potential to generate "false positive" signals in a complex biological environment. In contrast, dual-locked probes can simultaneously respond to multiple targets simultaneously, which could effectively eliminate this defect.
View Article and Find Full Text PDFMAF1 inhibits hepatocarcinogenesis by fostering an immunostimulatory tumor microenvironment.
J Immunother Cancer
January 2025
State Key Laboratory of Oncology in South China, and Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
Background: The biological significance of MAF1, a tumor suppressor, in carcinogenesis and immune response of hepatocellular carcinoma (HCC) remains unreported. Understanding the underlying mechanisms by which MAF1 enhances anti-tumor immunity in HCC is crucial for developing novel immunotherapy strategies and enhancing clinical responses to treatment for patients with HCC.
Methods: Mice were subjected to hydrodynamic tail vein injections of transposon vectors to overexpress AKT/NRas, or c-Myc, with or without wild-type (WT) or mutant-activated (-4A) MAF1, or short-hairpin MAF1 (shMAF1).
Chronic fat consumption affects metabolic aspects of murine physiology and influences ovarian follicle atresia.
Reprod Toxicol
January 2025
Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil. Electronic address:
Saturated fat has been linked to cardiovascular diseases, leading to an increase in polyunsaturated fat consumption. The aim of the present study was to investigate the effects of three fat sources (coconut oil, lard and soybean oil) on metabolic and reproductive parameters in heterogenic mice. Female Swiss mice (5-6 weeks old; n=9/group) were divided into four experimental groups: control (CC), coconut oil (CO), lard (LA), and soybean oil (SO), and were orally given 0.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!