Mucosal-Associated Invariant T cell in liver diseases

Area of Science:

• Immunology
• Hepatology
• Cell Biology

Background:

• Mucosal-associated invariant T cells (MAIT cells) are abundant innate immune cells in the liver.
• MAIT cells play intricate roles in the pathogenesis and progression of various liver diseases.

Purpose of the Study:

• To review recent studies on MAIT cells in liver diseases.
• To elucidate the specific roles of MAIT cells in alcoholic liver disease, non-alcoholic fatty liver disease (NAFLD), autoimmune liver diseases, viral hepatitis, and liver cancer.

Main Methods:

• Literature review of recent studies.
• Analysis of MAIT cell involvement in different liver disease models and patient cohorts.

Main Results:

• MAIT cells contribute to anti-bacterial responses in alcoholic liver disease.
• Activated MAIT cells can promote liver inflammation and fibrosis through cytokine secretion and hepatic stellate cell activation.
• In viral hepatitis, MAIT cells display an exhausted phenotype, impairing pathogen control.
• MAIT cell status correlates with disease progression and therapeutic outcomes in liver cancer.

Conclusions:

• MAIT cells are implicated in diverse liver pathologies, exhibiting both pro-inflammatory and regulatory functions.
• MAIT cells represent promising biomarkers for diagnosing liver diseases and predicting patient outcomes.
• Targeting MAIT cells offers a potential therapeutic strategy for managing various liver conditions.