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Updated: Jun 28, 2025
Activation and Measurement of NLRP3 Inflammasome Activity Using IL-1β in Human Monocyte-derived Dendritic Cells
Published on: May 22, 2014
Molecular regulation of NLRP3 inflammasome activation during parasitic infection
1Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
Abstract:
Parasitic diseases are a serious global health concern, causing many common and severe infections, including Chagas disease, leishmaniasis, and schistosomiasis. The NLRP3 inflammasome belongs to the NLR (nucleotide-binding domain leucine-rich-repeat-containing proteins) family, which are cytosolic proteins playing key roles in the detection of pathogens. NLRP3 inflammasomes are activated in immune responses to Plasmodium, Leishmania, Toxoplasma gondii, Entamoeba histolytica, Trypanosoma cruzi, and other parasites. The role of NLRP3 is not fully understood, but it is a crucial component of the innate immune response to parasitic infections and its functions as a sensor triggering the inflammatory response to the invasive parasites. However, while this response can limit the parasites' growth, it can also result in potentially catastrophic host pathology. This makes it essential to understand how NLRP3 interacts with parasites to initiate the inflammatory response. Plasmodium hemozoin, Leishmania glycoconjugate lipophosphoglycan (LPG) and E. histolytica Gal/GalNAc lectin can stimulate NLRP3 activation, while the dense granule protein 9 (GRA9) of T. gondii has been shown to suppress it. Several other parasitic products also have diverse effects on NLRP3 activation. Understanding the mechanism of NLRP3 interaction with these products will help to develop advanced therapeutic approaches to treat parasitic diseases. This review summarizes current knowledge of the NLRP3 inflammasome's action on the immune response to parasitic infections and aims to determine the mechanisms through which parasitic molecules either activate or inhibit its action.
Insights
The NLRP3 inflammasome is key in the immune response to parasitic diseases, but its activation by parasite molecules can harm the host. Understanding these interactions is vital for new treatments.
Area of Science:
- Immunology
- Parasitology
- Molecular Biology
Background:
- Parasitic diseases pose a significant global health challenge.
- The NLRP3 inflammasome, part of the innate immune system, detects pathogens.
- NLRP3 activation is observed in response to various parasites, but its precise role is complex.
Purpose of the Study:
- To review the current understanding of NLRP3 inflammasome involvement in parasitic infections.
- To elucidate the mechanisms by which parasitic molecules interact with NLRP3.
- To identify therapeutic targets for parasitic diseases based on NLRP3 modulation.
Main Methods:
- Literature review of studies on NLRP3 inflammasome and parasitic infections.
- Analysis of known parasitic molecules that activate or inhibit NLRP3.
- Synthesis of current knowledge on host-parasite interactions involving NLRP3.
Main Results:
- NLRP3 inflammasome activation is triggered by specific molecules from Plasmodium, Leishmania, and Entamoeba histolytica.
- Some parasitic products, like T. gondii GRA9, can suppress NLRP3 activation.
- The immune response mediated by NLRP3 can be beneficial in controlling parasites but also detrimental to the host.
Conclusions:
- NLRP3 plays a dual role in parasitic infections, mediating both defense and pathology.
- Understanding the molecular interactions between parasites and NLRP3 is crucial for therapeutic development.
- Targeting NLRP3 pathways offers potential for novel treatments against parasitic diseases.
