Cited by 50Cell death mechanisms and regulationProtease and Inhibitor MechanismsInflammasome and immune disorders

Distinct cathepsins control necrotic cell death mediated by pyroptosis inducers and lysosome-destabilizing agents

Open access
Brojatsch, Jürgen, Lima, Heriberto, Palliser, Deborah, Jacobson, Lee S, Muehlbauer, Stefan M, Furtado, Raquel, Goldman, David L, Lisanti, Michael P +1 more·2015·Cell Cycle

Abstract

Necrotic cell death triggers a range of biological responses including a strong adaptive immune response, yet we know little about the cellular pathways that control necrotic cell death. Inhibitor studies suggest that proteases, and in particular cathepsins, drive necrotic cell death. The cathepsin B-selective inhibitor CA-074-Me blocks all forms of programmed necrosis by an unknown mechanism. We found that cathepsin B deficiency does not prevent induction of pyroptosis and lysosome-mediated necrosis suggesting that CA-074-Me blocks necrotic cell death by targeting cathepsins other than cathepsin B. A single cathepsin, cathepsin C, drives necrotic cell death mediated by the lysosome-destabilizing agent Leu-Leu-OMe (LLOMe). Here we present evidence that cathepsin C-deficiency and CA-074-Me block LLOMe killing in a distinct and cell type-specific fashion. Cathepsin C-deficiency and CA-074-Me block LLOMe killing of all myeloid cells, except for neutrophils. Cathepsin C-deficiency, but not CA-074-Me, blocks LLOMe killing of neutrophils suggesting that CA-074-Me does not target cathepsin C directly, consistent with inhibitor studies using recombinant cathepsin C. Unlike other cathepsins, cathepsin C lacks endoproteolytic activity, and requires activation by other lysosomal proteases, such as cathepsin D. Consistent with this theory, we found that lysosomotropic agents and cathepsin D downregulation by siRNA block LLOMe-mediated necrosis. Our findings indicate that a proteolytic cascade, involving cathepsins C and D, controls LLOMe-mediated necrosis. In contrast, cathepsins C and D were not required for pyroptotic cell death suggesting that distinct cathepsins control pyroptosis and lysosome-mediated necrosis.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.4161/15384101.2014.991194

Cites

57 of 57 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Brojatsch, J., Lima, H., Palliser, D., Jacobson, L. S., Muehlbauer, S. M., Furtado, R., Goldman, D. L., Lisanti, M. P., & Chandran, K.
Affiliations
  • Albert Einstein College of Medicine (US)
  • Beth Israel Deaconess Medical Center (US)
  • University of Manchester (GB)
Corresponding author
Lisanti, Michael P
Venue
Cell Cycle
Published
2015-04-01
Volume
14
Issue
7
Pages
964-972
ISSN
  • 1538-4101 (ISSN-L)
  • 1551-4005
OpenAlex
W2027390173
Cited by
50
References
57
Citations by year
2026: 4 · 2025: 6 · 2024: 1 · 2023: 2 · 2022: 6 · 2021: 7 · 2020: 8 · 2019: 5 · 2018: 7 · 2017: 2 · 2016: 2
FWCI
1.59
Type
journal article
Language
en
Open access
Locations
  • Cell Cycle (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Research Explorer (The University of Manchester) (publishedVersion)
Funders
  • National Institutes of Health (1r56ai092497-01a1)
  • National Institute of Allergy and Infectious Diseases (1R56AI092497-01A1, R01AI088027, R01AI099567, U54AI057158)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Protease and Inhibitor Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Inflammasome and immune disorders
Keywords
necrosis, cathepsin C, cathepsin D, pyroptosis, cathepsin B, proteolytic cascade, neutrophils, myeloid cells, lysosomal proteases, cell death regulation
MeSH terms
Animals, Cathepsin B, Cathepsin D, Dipeptides, Lysosomes, Mice, Inbred BALB C, Mice, Inbred C57BL, Necrosis, Apoptosis, Cathepsin C

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review