X

Forgot your Password

If you have forgotten your password, please enter your account email below and we will reset your password and email you the new password.

X

Login to SciCrunch

X

Register an Account

Delete Saved Search

Are you sure you want to delete this saved search?

NO

NIF LinkOut Portal

FILTERS

A crucial function of SGT1 and HSP90 in inflammasome activity links mammalian and plant innate immune responses.

Authors:
Mayor A, Martinon F, De Smedt T, Pétrilli V, Tschopp J
Affiliation:
Journal:
Nature immunology

Abstract

The family of mammalian Nod-like receptors (NLRs) consists of critical intracellular immune proteins structurally related to plant resistance proteins. The NLRs NALP3 and IPAF, for example, can each form a multiprotein proinflammatory complex called the 'inflammasome', and mutations in the gene encoding Nod2, another NLR, are positively associated with Crohn disease. Here we show that many NLRs interacted with the ubiquitin ligase-associated protein SGT1 and heat-shock protein 90 (HSP90), both of which have plant orthologs essential for R-protein responses. 'Knockdown' of SGT1 by small interfering RNA or chemical inhibition of HSP90 abrogated inflammasome activity, and inhibition of HSP90 blocked Nod2-mediated activation of the transcription factor NF-kappaB and reduced NALP3-mediated gout-like inflammation in mice. Our data demonstrate a similarity in one type of innate immunity in plants and mammals that is consistent with convergent evolution of a shared mechanism.

  1. Welcome

    Welcome to NIF. Explore available research resources: data, tools and materials, from across the web

  2. Community Resources

    Search for resources specially selected for NIF community

  3. More Resources

    Search across hundreds of additional biomedical databases

  4. Literature

    Search Pub Med abstracts and full text from PubMed Central

  5. Insert your Query

    Enter your search terms here and hit return. Search results for the selected tab will be returned.

  6. Join the Community

    Click here to login or register and join this community.

  7. Categories

    Narrow your search by selecting a category. For additional help in searching, view our tutorials.

  8. Query Info

    Displays the total number of search results. Provides additional information on search terms, e.g., automated query expansions, and any included categories or facets. Expansions, filters and facets can be removed by clicking on the X. Clicking on the + restores them.

  9. Search Results

    Displays individual records and a brief description. Click on the icons below each record to explore additional display options.

X