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Cited by 788

The DOI matches its Crossref record; 35 of the 35 references it cites were found in a registry or an index.

The Salmonella invasin SipB induces macrophage apoptosis by binding to caspase-1

Open access
Hersh, David, Monack, Denise M., Smith, Mark R., Ghori, Nafisa, Falkow, Stanley, Zychlinsky, Arturo·1999·Proceedings of the National Academy of Sciences

Abstract

Recently,Salmonella spp. were shown to induce apoptosis in infected macrophages. The mechanism responsible for this process is unknown. In this report, we establish that the Inv-Spa type III secretion apparatus target invasin SipB is necessary and sufficient for the induction of apoptosis. Purified SipB microinjected into macrophages led to cell death. Binding studies show that SipB associates with the proapoptotic protease caspase-1. This interaction results in the activation of caspase-1, as seen in its proteolytic maturation and the processing of its substrate interleukin-1β. Caspase-1 activity is essential for the cytotoxicity. Functional inhibition of caspase-1 activity by acetyl-Tyr-Val-Ala-Asp-chloromethyl ketone blocks macrophage cytotoxicity, and macrophages lacking caspase-1 are not susceptible to Salmonella-induced apoptosis. Taken together, the data demonstrate that SipB functions as an analog of the Shigella invasin IpaB.

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Metadata

Authors
Hersh, D., Monack, D. M., Smith, M. R., Ghori, N., Falkow, S., & Zychlinsky, A.
Venue
Proceedings of the National Academy of Sciences
Published
1999-03-02
Volume
96
Issue
5
Pages
2396-2401
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2078254281
Cited by
788
References
35
FWCI
84.27
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: The Salmonella invasin SipB induces macrophage apoptosis by binding to caspase-1. https://app.cochat.ai/papers/10.1073/pnas.96.5.2396
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Hersh, D., Monack, D. M., Smith, M. R., Ghori, N., Falkow, S., & Zychlinsky, A. (1999). The Salmonella invasin SipB induces macrophage apoptosis by binding to caspase-1. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.96.5.2396

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