Evidence map›Paper›PMID 25964352›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2015

Human caspase-4 mediates noncanonical inflammasome activation against gram-negative bacterial pathogens.

Cierra N Casson, Janet Yu, Valeria M Reyes, Frances O Taschuk, Anjana Yadav, Alan M Copenhaver, Hieu T Nguyen, Ronald G Collman, Sunny Shin

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 171 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
171citing papers in PubMed, 2 pooled it
13.3field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

171 citing papers in PubMed, 2 syntheses or guidelines pooled it, 268 citations in OpenAlex.

  1. Review: the role of GSDMD in sepsis.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2022
    Pooled it
  2. Pooled it
  3. Review
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  6. An overview of human inflammasomes: Activation and regulation.Journal of immunology (Baltimore, Md. : 1950) · 2026
    Review
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  9. Review
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  19. Human non-canonical inflammasomes activate CASP3 to limit intracellularbioRxiv : the preprint server for biology · 2025
    Article
  20. Article

111 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 1 institution in 1 country.

Cierra N CassonDepartments of Microbiology and.
Janet YuDepartments of Microbiology and.
Valeria M ReyesDepartments of Microbiology and.
Frances O TaschukDepartments of Microbiology and.
Anjana YadavMedicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104.
Alan M CopenhaverDepartments of Microbiology and.
Hieu T NguyenDepartments of Microbiology and.
Ronald G CollmanMedicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104.
Sunny ShinDepartments of Microbiology and sunshin@mail.med.upenn.edu.
University of Pennsylvania · US

Funding

UNIVERSITY OF PENNSYLVANIA CAN CTR SUPPORT GRANTP30CA016520 · NCI · UNIVERSITY OF PENNSYLVANIA · PI SHELLEY L BERGER · 1985 to 2026
$222.3M
Virus & Reservoirs CoreP30AI045008 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI ROBERT GROSS · 1999 to 2026
$78.6M
TRAINING PROGRAM IN CELL AND MOLECULAR BIOLOGYT32GM007229 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI BARTOLOMEI, MARISA S. · 1985 to 2023
$14.0M
HIV: gp120, Chemokine Receptors &Macrophage ActivationR01MH061139 · NIMH · UNIVERSITY OF PENNSYLVANIA · PI COLLMAN, RONALD G · 1999 to 2015
$5.2M
Molecular and cellular characterization of host response pathways triggered by vaR00AI087963 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI SHIN, SUNNY · 2011 to 2012
$496k
Molecular and cellular characterization of host response pathways triggered by vaK99AI087963 · NIAID · YALE UNIVERSITY · PI SHIN, SUNNY · 2010 to 2010
$95k
NCI NIH HHS P30 CA016520NIAID NIH HHS K99/R00AI087963NIAID NIH HHS P30 AI045008NIAID NIH HHS R00 AI087963NIGMS NIH HHS T32 GM007229NIGMS NIH HHS T32GM007229NIMH NIH HHS R01 MH061139
6 · The paper itself

Abstract

Inflammasomes are critical for host defense against bacterial pathogens. In murine macrophages infected by gram-negative bacteria, the canonical inflammasome activates caspase-1 to mediate pyroptotic cell death and release of IL-1 family cytokines. Additionally, a noncanonical inflammasome controlled by caspase-11 induces cell death and IL-1 release. However, humans do not encode caspase-11. Instead, humans encode two putative orthologs: caspase-4 and caspase-5. Whether either ortholog functions similar to caspase-11 is poorly defined. Therefore, we sought to define the inflammatory caspases in primary human macrophages that regulate inflammasome responses to gram-negative bacteria. We find that human macrophages activate inflammasomes specifically in response to diverse gram-negative bacterial pathogens that introduce bacterial products into the host cytosol using specialized secretion systems. In primary human macrophages, IL-1β secretion requires the caspase-1 inflammasome, whereas IL-1α release and cell death are caspase-1-independent. Instead, caspase-4 mediates IL-1α release and cell death. Our findings implicate human caspase-4 as a critical regulator of noncanonical inflammasome activation that initiates defense against bacterial pathogens in primary human macrophages.

Indexed as

AnimalsCaspase 1Caspases, InitiatorCell DeathCells, CulturedGram-Negative BacteriaHumansInflammasomesInterleukin-1alphaInterleukin-1betaLegionella pneumophilaLipopolysaccharidesMacrophagesMiceSalmonella typhimuriumYersinia pseudotuberculosisCASP4 protein, humanCaspase 1Caspases, InitiatorInflammasomesInterleukin-1alphaInterleukin-1betaLipopolysaccharidescaspase-4gram-negative bacteriainflammasomeinnate immunityprimary macrophages

Identifiers

PMID25964352
PMCPMC4450384
OpenAlexW1801353699

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.