The DOI matches its Crossref record; 10 of the 10 references it cites were found in a registry or an index.
Pannexin-1-Mediated Intracellular Delivery of Muramyl Dipeptide Induces Caspase-1 Activation via Cryopyrin/NLRP3 Independently of Nod2
Abstract
Muramyl dipeptide (MDP), the microbial activator of nucleotide-binding oligomerization domain 2 (Nod2), induces NF-κB and MAPK activation, leading to the production of multiple anti-bacterial and proinflammatory molecules. In addition, MDP has been implicated in IL-1β secretion through the regulation of caspase-1. However, the mechanisms that mediate caspase-1 activation and IL-1β secretion in response to MDP stimulation remain poorly understood. We show here that fluorescent MDP molecules are internalized in primary macrophages and accumulate in granular structures that colocalize with markers of acidified endosomal compartments. The uptake of MDP was Nod2-independent. Upon ATP stimulation, labeled MDP was rapidly released from acidified vesicles into the cytosol, a process that required functional pannexin-1. Caspase-1 activation induced by MDP and ATP required pannexin-1 and Cryopyrin but was independent of Nod2. Conversely, induction of pro-IL-1β mRNA by MDP stimulation was abolished in Nod2-deficient macrophages but unimpaired in macrophages lacking Cryopyrin. These studies demonstrate a Nod2-independent mechanism mediated through pore-forming pannexin-1 that is required for intracellular delivery of MDP to the cytosol and caspase-1 activation. Furthermore, the work provides evidence for distinct roles of Nod2 and Cryopyrin in the regulation of MDP-induced caspase-1 activation and IL-1β secretion.
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Cites
Martinon, F., Burns, K., & Tschopp, J. (2002) · Molecular Cell · doi:10.1016/s1097-2765(02)00599-3 · Cited by 6,066
Gout-associated uric acid crystals activate the NALP3 inflammasome
Martinon, F., Pétrilli, V., Mayor, A., Tardivel, A., & Tschopp, J. (2006) · Nature · doi:10.1038/nature04516 · Cited by 5,326
Cryopyrin activates the inflammasome in response to toxins and ATP
Mariathasan, S., Weiss, D. S., Newton, K., McBride, J., O'Rourke, K., Roose-Girma, M., Lee, W. P., Weinrauch, Y., Monack, D. M., & Dixit, V. M. (2006) · Nature · doi:10.1038/nature04515 · Cited by 3,080
Agostini, L., Martinon, F., Burns, K., McDermott, M. F., Hawkins, P. N., & Tschopp, J. (2004) · Immunity · doi:10.1016/s1074-7613(04)00046-9 · Cited by 1,768
Franchi, L., Amer, A., Body-Malapel, M., Kanneganti, T.-D., Özören, N., Jagirdar, R., Inohara, N., Vandenabeele, P., Bertin, J., Coyle, A., et al. (2006) · Nature Immunology · doi:10.1038/ni1346 · Cited by 1,131
Self-citationCytoplasmic flagellin activates caspase-1 and secretion of interleukin 1β via Ipaf
Miao, E. A., Alpuche-Aranda, C. M., Dors, M., Clark, A. E., Bader, M. W., Miller, S. I., & Aderem, A. (2006) · Nature Immunology · doi:10.1038/ni1344 · Cited by 1,127
Sutterwala, F. S., Ogura, Y., Szczepanik, M., Lara-Tejero, M., Lichtenberger, G. S., Grant, E. P., Bertin, J., Coyle, A. J., Galán, J. E., Askenase, P. W., et al. (2006) · Immunity · doi:10.1016/j.immuni.2006.02.004 · Cited by 980
Regulation of Legionella Phagosome Maturation and Infection through Flagellin and Host Ipaf
Amer, A., Franchi, L., Kanneganti, T.-D., Body-Malapel, M., Özören, N., Brady, G., Meshinchi, S., Jagirdar, R., Gewirtz, A., Akira, S., et al. (2006) · Journal of Biological Chemistry · doi:10.1074/jbc.m604933200 · Cited by 453
Self-citationFranchi, L., Kanneganti, T.-D., Dubyak, G. R., & Núñez, G. (2007) · Journal of Biological Chemistry · doi:10.1074/jbc.m610762200 · Cited by 356
Self-citationhPepT1 mediates bacterial tripeptide fMLP uptake in human monocytes
Charrier, L., Driss, A., Yan, Y., Nduati, V., Klapproth, J.-M., Sitaraman, S. V., & Merlin, D. (2006) · Laboratory Investigation · doi:10.1038/labinvest.3700413 · Cited by 52
Cited by
Hornung, V., Bauernfeind, F., Halle, A., Samstad, E. O., Kono, H., Rock, K. L., Fitzgerald, K. A., & Latz, E. (2008) · Nature Immunology · doi:10.1038/ni.1631 · Cited by 3,065
Sterile inflammation: sensing and reacting to damage
Chen, G. Y., & Nuñez, G. (2010) · Nature Reviews Immunology · doi:10.1038/nri2873 · Cited by 3,051
Thioredoxin-interacting protein links oxidative stress to inflammasome activation
Zhou, R., Tardivel, A., Thorens, B., Choi, I., & Tschopp, J. (2010) · Nature Immunology · doi:10.1038/ni.1831 · Cited by 2,708
The Inflammasomes: Guardians of the Body
Martinon, F., Mayor, A., & Tschopp, J. (2009) · Annual Review of Immunology · doi:10.1146/annurev.immunol.021908.132715 · Cited by 2,436
Franchi, L., Eigenbrod, T., Muñoz-Planillo, R., & Nuñez, G. (2009) · Nature Immunology · doi:10.1038/ni.1703 · Cited by 1,834
Self-citation
Metadata
- Authors
- Marina-García, N., Franchi, L., Kim, Y.-G., Miller, D., McDonald, C., Boons, G.-J., & Núñez, G.
- Venue
- The Journal of Immunology
- Publisher
- Oxford University Press (OUP)
- Published
- 2008-03
- Volume
- 180
- Issue
- 6
- Pages
- 4050-4057
- ISSN
- 0022-1767 (ISSN-L)
- 1550-6606
- OpenAlex
- W1585170322
- Cited by
- 169
- References
- 10
- FWCI
- 9.43
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Pannexin-1-Mediated Intracellular Delivery of Muramyl Dipeptide Induces Caspase-1 Activation via Cryopyrin/NLRP3 Independently of Nod2. https://app.cochat.ai/papers/10.4049/jimmunol.180.6.4050
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- Marina-García, N., Franchi, L., Kim, Y.-G., Miller, D., McDonald, C., Boons, G.-J., & Núñez, G. (2008). Pannexin-1-Mediated Intracellular Delivery of Muramyl Dipeptide Induces Caspase-1 Activation via Cryopyrin/NLRP3 Independently of Nod2. The Journal of Immunology. https://doi.org/10.4049/jimmunol.180.6.4050
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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