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Translational Implication of Galectin-9 in the Pathogenesis and Treatment of Viral Infection
Jenn-Haung Lai1,2, Shue-Fen Luo3, Mei-Yi Wang4
1Division of Allergy, Immunology, and Rheumatology, Department of Internal Medicine, Chang Gung Memorial Hospital, Chang Gung University, Tao-Yuan 33305, Taiwan. laiandho@gmail.com.
Abstract:
The interaction between galectin-9 and its receptor, Tim-3, triggers a series of signaling events that regulate immune responses. The expression of galectin-9 has been shown to be increased in a variety of target cells of many different viruses, such as hepatitis C virus (HCV), hepatitis B virus (HBV), herpes simplex virus (HSV), influenza virus, dengue virus (DENV), and human immunodeficiency virus (HIV). This enhanced expression of galectin-9 following viral infection promotes significant changes in the behaviors of the virus-infected cells, and the resulting events tightly correlate with the immunopathogenesis of the viral disease. Because the human immune response to different viral infections can vary, and the lack of appropriate treatment can have potentially fatal consequences, understanding the implications of galectin-9 is crucial for developing better methods for monitoring and treating viral infections. This review seeks to address how we can apply the current understanding of galectin-9 function to better understand the pathogenesis of viral infection and better treat viral diseases.
Insights
Galectin-9 (G9) and its receptor Tim-3 interaction influences immune responses during viral infections. Understanding G9
Area of Science:
- Immunology
- Virology
- Molecular Biology
Background:
- Galectin-9 (G9) interacts with its receptor Tim-3, modulating immune responses.
- Increased G9 expression is observed in cells infected with various viruses, including hepatitis C virus (HCV), hepatitis B virus (HBV), herpes simplex virus (HSV), influenza virus, dengue virus (DENV), and human immunodeficiency virus (HIV).
- Elevated G9 levels alter virus-infected cell behavior, correlating with disease immunopathogenesis.
Purpose of the Study:
- To review the role of galectin-9 in viral pathogenesis.
- To explore how galectin-9 function can inform viral disease monitoring and treatment strategies.
Main Methods:
- Literature review of studies on galectin-9, Tim-3, and viral infections.
- Analysis of the correlation between galectin-9 expression and viral immunopathogenesis.
Main Results:
- Galectin-9 plays a significant role in the immune response to viral infections.
- Changes in galectin-9 expression are linked to the progression and severity of viral diseases.
- The galectin-9/Tim-3 pathway is a critical factor in viral immunopathogenesis.
Conclusions:
- Understanding galectin-9's function is essential for developing improved diagnostics and therapeutics for viral infections.
- Targeting the galectin-9 pathway may offer novel strategies for managing viral diseases.
- Further research into galectin-9's precise mechanisms in different viral contexts is warranted.
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