AhR expression is increased in hepatocellular carcinoma
Ziyu Liu1, Xing'an Wu, Fanglin Zhang
1Department of Microbiology, The Fourth Military Medical University, Xi'an, 710032, Shaanxi, China.
Journal of Molecular Histology
|April 3, 2013
Summary
Increased aryl hydrocarbon receptor (AhR) expression is linked to hepatocellular carcinoma progression. This finding suggests AhR may be a potential therapeutic target for liver cancer treatment.
Area of Science:
- Oncology
- Molecular Biology
- Hepatology
Background:
- The aryl hydrocarbon receptor (AhR) is a transcription factor involved in cellular processes and tumorigenesis.
- Its specific role in hepatocellular carcinoma (HCC) development and progression is not well understood.
Purpose of the Study:
- To investigate the role of AhR in HCC tumorigenesis and progression.
- To measure AhR expression levels in liver lesions and correlate them with clinicopathologic parameters.
Main Methods:
- Immunohistochemical assessment of AhR expression in a tissue microarray.
- The microarray included 94 HCC tissues, 5 adjacent normal hepatic tissues, and 5 normal hepatic tissues.
Main Results:
- Significantly higher AhR staining was observed in HCC tissues compared to normal and adjacent normal hepatic tissues (P = 0.003, P = 0.004).
- AhR expression levels were found to be associated with the T stage of HCC (P = 0.03).
Conclusions:
- Elevated AhR expression correlates with HCC progression.
- AhR may represent a potential therapeutic target for hepatocellular carcinoma.
Related Concept Videos
01:24Cirrhosis II: Pathophysiology
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 structural...
01:58Cell Specific Gene Expression
Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
01:24Liver Regeneration
The liver is an important organ in vertebrates that plays an essential role in metabolism. It is also responsible for storing and redistributing nutrients such as carbohydrates, fats, and vitamins in the body. Additionally, the liver releases bile salts which are critical for digesting food and eliminating toxic metabolites from the body.
Cells of Liver
The liver comprises four major types of cells— hepatocytes, stellate, Kupffer, and sinusoidal endothelial cells. The hepatocytes are large...
Cells of Liver
The liver comprises four major types of cells— hepatocytes, stellate, Kupffer, and sinusoidal endothelial cells. The hepatocytes are large...
01:23Cirrhosis I: Introduction
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...
01:22Effect of Hepatic Disease on Pharmacokinetics: Pathophysiologic Assessment and Liver Function Test
In clinical practice, the direct measurement of hepatic blood flow to evaluate liver function presents significant challenges due to the intricate and specialized nature of the necessary techniques. Consequently, healthcare professionals often rely on empirical estimates derived from thorough patient examinations and liver function tests to gauge liver health. Among the tools at their disposal, the Child–Pugh and MELD scoring systems stand out for their ability to categorize and assess the...
01:25Hepatitis
Hepatitis is an inflammatory condition of the liver most commonly caused by hepatotropic viruses (A–E), though non-infectious causes such as alcohol and drugs also exist.Hepatitis AHepatitis A virus (HAV) is a non-enveloped RNA virus of the Picornaviridae family. It is primarily transmitted via the fecal-oral route, typically through ingestion of contaminated food or water. After ingestion, HAV enters the bloodstream through the oropharynx or intestinal epithelium and reaches the liver. The...