Related Experiment Video
Updated: Apr 21, 2026

The Murine Choline-Deficient, Ethionine-Supplemented CDE Diet Model of Chronic Liver Injury
Published on: October 21, 2017
Chronic liver inflammation and hepatocellular carcinogenesis are independent of S100A9
Aurora De Ponti1, Lars Wiechert, Ana Stojanovic
1Division of Signal Transduction and Growth Control, DKFZ-ZMBH Alliance, German Cancer Research Center (DKFZ), Heidelberg, Germany.
Abstract:
The S100A8/A9 heterodimer (calprotectin) acts as a danger signal when secreted into the extracellular space during inflammation and tissue damage. It promotes proinflammatory responses and drives tumor development in different models of inflammation-driven carcinogenesis. S100A8/A9 is strongly expressed in several human tumors, including hepatocellular carcinoma (HCC). Apart from this evidence, the role of calprotectin in hepatocyte transformation and tumor microenvironment is still unknown. The aim of this study was to define the function of S100A8/A9 in inflammation-driven HCC. Mice lacking S100a9 were crossed with the Mdr2(-/-) model, a prototype of inflammation-induced HCC formation. S100a9(-/-) Mdr2(-/-) (dKO) mice displayed no significant differences in tumor incidence or multiplicity compared to Mdr2(-/-) animals. Chronic liver inflammation, fibrosis and oval cell activation were not affected upon S100a9 deletion. Our data demonstrate that, although highly upregulated, calprotectin is dispensable in the onset and development of HCC, and in the maintenance of liver inflammation.
More Related Videos
07:32Author Spotlight: Investigating Immune Cell Dynamics in the Tumor Microenvironment — Challenges and Innovations in Cancer Prognosis
Published on: April 12, 2024
06:38An Oncogenic Hepatocyte-Induced Orthotopic Mouse Model of Hepatocellular Cancer Arising in the Setting of Hepatic Inflammation and Fibrosis
Published on: September 12, 2019
Related Concept Videos
Cirrhosis II: Pathophysiology
Chronic Pancreatitis II: Pathophysiology
Cirrhosis I: Introduction
Chronic Pancreatitis I: Introduction
Chronic Pancreatitis I: Introduction
Pancreatitis is the inflammation of the pancreas, which occurs when the immune system becomes active and causes swelling, pain, and disruptions in organ function. Pancreatitis can manifest as either an acute or chronic condition.
Acute pancreatitis arises suddenly and lasts for a brief duration, while chronic pancreatitis is a long-term affliction...
Chronic Inflammation: Introduction