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Helminth parasites and immune regulation
Pedro H Gazzinelli-Guimaraes1, Thomas B Nutman1
1Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 4 Center Drive, Building 4, Room 211, Bethesda, MD, 20892, USA.
Helminth parasites downregulate host immune responses, suppressing infections and immune disorders. They utilize regulatory T cells and specific molecules to achieve this immune modulation.
Area of Science:
- Immunology
- Parasitology
- Helminthology
Background:
- Helminth parasites employ sophisticated mechanisms for immune evasion.
- Chronic helminth infections can lead to broad immunosuppression, affecting responses to other antigens and diseases.
Purpose of the Study:
- To review recent advancements in understanding host immune responses to helminth infections.
- To highlight the strategies and molecules helminths use to modulate host immunity.
Main Methods:
- Review of current literature on helminth-parasite interactions and host immune modulation.
- Analysis of molecular and cellular mechanisms involved in helminth-induced immunoregulation.
Main Results:
- Helminths induce regulatory T cells (Tregs) and Th2-type immune responses.
- Parasite-derived molecules (metabolites, proteins, extracellular vesicles) can directly influence host cell signaling pathways.
- Helminth immunoregulation extends to suppressing responses to bystander antigens and various immune-related disorders.
Conclusions:
- Helminths possess diverse strategies to manipulate host immune systems for their survival.
- Understanding these mechanisms offers insights into potential therapeutic applications for immune modulation.
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