Related Experiment Video
Updated: Apr 28, 2026
08:56
Bile Duct Ligation in Mice: Induction of Inflammatory Liver Injury and Fibrosis by Obstructive Cholestasis
Published on: February 10, 2015
56.5K
MicroRNA function in the profibrogenic interplay upon chronic liver disease
Jia Huang1, Xiaojie Yu2, Jochen W U Fries3
1Institute for Pathology, University Hospital of Cologne, Cologne 50924, Germany. jia.huang@uk-koeln.de.
International Journal of Molecular Sciences
|May 30, 2014
Summary
MicroRNAs regulate liver fibrosis by controlling hepatic stellate cell communication. These small RNAs impact extracellular matrix production and profibrogenic pathways in chronic liver injury.
Area of Science:
- Hepatology
- Molecular Biology
- RNA Biology
Background:
- Chronic liver disease causes fibrosis through hepatic stellate cell (HSC) activation.
- Activated HSC myofibroblasts synthesize extracellular matrix and secrete profibrogenic mediators.
- MicroRNAs (miRNAs) are small noncoding RNAs regulating gene expression.
Purpose of the Study:
- To investigate the role of miRNAs in HSC myofibroblastic differentiation during liver fibrogenesis.
- To understand how altered miRNA patterns influence profibrogenic cell communication in chronic liver injury.
Main Methods:
- Review and synthesis of current literature on miRNA function in liver fibrosis.
- Analysis of miRNA-mediated regulation of extracellular matrix production and profibrogenic pathways.
Main Results:
- Altered miRNA expression patterns are observed in chronic liver disease.
- miRNAs target genes involved in extracellular matrix synthesis and profibrogenic signaling.
- miRNAs play a crucial role in the communication pathways driving HSC myofibroblastic differentiation.
Conclusions:
- miRNAs are key regulators of hepatic stellate cell activation and liver fibrosis.
- Targeting specific miRNAs may offer therapeutic strategies for liver fibrogenesis.
- Understanding miRNA involvement is critical for deciphering profibrogenic cell communication.
Related Concept Videos
01:22MicroRNAs
3.0K
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
3.0K
01:22MicroRNAs
21.0K
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After...
21.0K
01:24Cirrhosis II: Pathophysiology
41
Cirrhosis is a progressive chronic liver injury caused by prolonged inflammation, excessive fibrotic remodeling, and impaired regeneration. Over time, repeated hepatic insults disrupt the liver’s architecture and function, leading to reduced blood flow, impaired bile drainage, and diminished metabolic capacity.Pathophysiology of cirrhosisCirrhosis arises from three main responses to chronic liver damage: inflammation, immune activation, and hepatocyte death. These processes lead to...
41
01:12Chronic Inflammation: Introduction
36
Chronic inflammation is a prolonged, dysregulated immune response that persists for weeks to years when the inciting stimulus is difficult to eradicate or when self‑antigens drive ongoing reactivity. Morphologically, it is defined by mononuclear cell infiltration, progressive tissue destruction, and concurrent attempts at healing via angiogenesis and fibrosis. Compared with acute inflammation, edema is less prominent while cellular infiltration predominates; triggers include persistent...
36
01:24Chronic Pancreatitis I: Introduction
903
The pancreas, an elongated and flat gland situated behind the stomach, serves a vital function in digesting food and managing blood sugar levels.
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...
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...
903
01:23Cirrhosis I: Introduction
28
Cirrhosis is a chronic, irreversible liver disease characterized by the widespread replacement of healthy liver tissue with fibrotic scar tissue and the formation of regenerative nodules.Etiology of cirrhosisCirrhosis results from sustained liver injury that triggers progressive fibrosis and structural remodeling. The underlying causes are diverse, encompassing common and less frequent clinical conditions. Regardless of the origin, all causes lead to chronic inflammation, hepatocyte loss, and...
28