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Toll-like receptors activate programmed necrosis in macrophages through a receptor-interacting kinase-3–mediated pathway

Open access
He, Sudan, Liang, Yuqiong, Shao, Feng, Wang, Xiaodong·2011·Proceedings of the National Academy of Sciences

Abstract

We report here that mouse macrophages undergo receptor-interacting kinase-3 (RIP3)-dependent but TNF-α–independent necrosis when Toll-like receptors (TLR) 3 and 4 are activated by poly(I:C) and LPS, respectively. An adaptor protein, Toll/IL-1 receptor domain-containing adapter inducing IFN-β (TRIF/TICAM-1), which is dispensable for TNF-α–induced necrosis, forms a complex with RIP3 upon TLR3/TLR4 activation and is essential for TLR3/TLR4-induced necrosis. Mice without RIP3 or functional TRIF did not show macrophage loss and elevation of inflammatory cytokines when they were exposed to LPS. Necrosis in mouse macrophages induced by either TNFR or TLR3/TLR4 is executed by reactive oxygen species. Taken together, these data indicate that there are multiple upstream necrosis-initiating signaling pathways converging on the RIP3 during an innate immune response to viral and bacterial infections in mammals.

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Research works printed but not linked: 24

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Metadata

Authors
He, S., Liang, Y., Shao, F., & Wang, X.
Venue
Proceedings of the National Academy of Sciences
Published
2011-11-28
Volume
108
Issue
50
Pages
20054-20059
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2141738274
Cited by
729
References
7
FWCI
11.78
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Toll-like receptors activate programmed necrosis in macrophages through a receptor-interacting kinase-3–mediated pathway. https://app.cochat.ai/papers/10.1073/pnas.1116302108
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He, S., Liang, Y., Shao, F., & Wang, X. (2011). Toll-like receptors activate programmed necrosis in macrophages through a receptor-interacting kinase-3–mediated pathway. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1116302108

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