NACHT, LRR and PYD domains-containing protein 3 (NALP3), Nucleotide-Binding Oligomerization Domain, or Leucine Rich Repeat and Pyrin Domain Containing 3 (NLRP3) (human NLRP3-isoform 2 theoretical molecular weight 118kDa) acts as a cytosolic receptor for stress-signals initiated by a wide variety of pathogen-associated molecular patterns (PAMPS) and danger-associated molecular patterns (DAMPs) (1). NLRP3 belongs to the family of NOD-like receptors, a type of pattern-recognition receptor (PRR) which participates in innate immune responses. The exact mechanisms leading to NLRP3 activation are still not fully resolved. Some proposed mechanisms for NLRP3 inflammasome activation include induced ion channel flux as exemplified by potassium efflux, sodium influx and calcium signaling, generation of mitochondrial reactive oxygen species (ROS), and lysosomal destabilization (2). Activation of NLRP3 induces its association with the adaptor protein Apoptosis-associated Speck-like protein containing CARD (ASC) forming a complex that binds to Caspase-1 (1, 2). The inflammasome complex, comprised of NLRP3, ASC and Caspase 1, induces the processing of pro-IL-1beta and pro-IL-18 and release of the mature inflammatory cytokines IL-1beta and IL-18 and pyroptosis (1-3).

NLRP3 is expressed in a variety of cell types such as monocytes, dendritic cells, lymphocytes and epithelial cells (3). Abnormal NLRP3 activation may occur as the result of inherited mutations and is associated with diseases such as hereditary periodic fevers (HPFs) and familial cold autoinflammatory syndrome (FCAS). Additionally, abnormal NLRP3 activation is associated with a variety of diseases such as gout, obesity, atherosclerosis, Alzheimers, multiple sclerosis and type 2 diabetes (1, 3). NLRP3 inflammasome is regulated by several post-translational modifications (e.g., ubiquitination, phosphorylation and sumoylation) as well as by various interacting proteins (e.g., JNK1, FBXO3, TXNIP, MARK4 and PKD) (4).

References

1. Abderrazak, A., Syrovets, T., Couchie, D., El Hadri, K., Friguet, B., Simmet, T., & Rouis, M. (2015). NLRP3 inflammasome: From a danger signal sensor to a regulatory node of oxidative stress and inflammatory diseases. Redox Biology. https://doi.org/10.1016/j.redox.2015.01.008

2. Yang, Y., Wang, H., Kouadir, M., Song, H., & Shi, F. (2019). Recent advances in the mechanisms of NLRP3 inflammasome activation and its inhibitors. Cell Death and Disease. https://doi.org/10.1038/s41419-019-1413-8

3. Zahid, A., Li, B., Kombe, A. J. K., Jin, T., & Tao, J. (2019). Pharmacological inhibitors of the nlrp3 inflammasome. Frontiers in Immunology. https://doi.org/10.3389/fimmu.2019.02538

4. Kelley, N., Jeltema, D., Duan, Y., & He, Y. (2019). The NLRP3 inflammasome: An overview of mechanisms of activation and regulation. International Journal of Molecular Sciences. https://doi.org/10.3390/ijms20133328

Long Name

NLR Family, Pyrin Domain Containing 2

Alternate Names

AGTAVPRL, AII, CIAS1, Cryopyrin, FCAS, FCU, MWS, NACHT, NALP3, PYPAF1

Gene Symbol

NLRP3

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Product Specific Notices for NLRP3/NALP3 Antibody (25N10E9) [Alexa Fluor® 488]

Alexa Fluor (R) products are provided under an intellectual property license from Life Technologies Corporation. The purchase of this product conveys to the buyer the non-transferable right to use the purchased product and components of the product only in research conducted by the buyer (whether the buyer is an academic or for-profit entity). The sale of this product is expressly conditioned on the buyer not using the product or its components, or any materials made using the product or its components, in any activity to generate revenue, which may include, but is not limited to use of the product or its components: (i) in manufacturing; (ii) to provide a service, information, or data in return for payment; (iii) for therapeutic, diagnostic or prophylactic purposes; or (iv) for resale, regardless of whether they are resold for use in research. For information on purchasing a license to this product for purposes other than as described above, contact Life Technologies Corporation, 5791 Van Allen Way, Carlsbad, CA 92008 USA or outlicensing@lifetech.com. This conjugate is made on demand. Actual recovery may vary from the stated volume of this product. The volume will be greater than or equal to the unit size stated on the datasheet.

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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NLRP3/NALP3 Antibody (25N10E9) [Alexa Fluor® 488]

Novus Biologicals, part of Bio-Techne | Catalog # NBP2-03948AF488

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Background: NLRP3/NALP3