Cited by 312Cell death mechanisms and regulationAutophagy in Disease and TherapyCytokine Signaling Pathways and Interactions

Stat3 controls lysosomal-mediated cell death in vivo

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Kreuzaler, Peter A., Staniszewska, Anna D., Li, Wenjing, Omidvar, Nader, Kedjouar, Blandine, Turkson, James, Poli, Valeria, Flavell, Richard A. +2 more·2011·Nature Cell Biology

Abstract

It is well established that lysosomes play an active role during the execution of cell death. A range of stimuli can lead to lysosomal membrane permeabilization (LMP), thus inducing programmed cell death without involvement of the classical apoptotic programme. However, these lysosomal pathways of cell death have mostly been described in vitro or under pathological conditions. Here we show that the physiological process of post-lactational regression of the mammary gland is accomplished through a non-classical, lysosomal-mediated pathway of cell death. We found that, during involution, lysosomes in the mammary epithelium undergo widespread LMP. Furthermore, although cell death through LMP is independent of executioner caspases 3, 6 and 7, it requires Stat3, which upregulates the expression of lysosomal proteases cathepsin B and L, while downregulating their endogenous inhibitor Spi2A (ref. 8). Our findings report a previously unknown, Stat3-regulated lysosomal-mediated pathway of cell death under physiological circumstances. We anticipate that these findings will be of major importance in the design of treatments for cancers such as breast, colon and liver, where cathepsins and Stat3 are commonly overexpressed and/or hyperactivated respectively.

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Crossref · 10.1038/ncb2171

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  • STAT3 promotes lysosome-dependent cell death during mammary gland involution post-lactation by upregulating CTSB and CTSL and downregulating SPI2A.

    “Moreover, STAT3 reportedly promotes lysosome-dependent cell death during the involution of mammary gland post-lactation as it upregulates the expression of cathepsin B (CTSB) and CTSL, while downregulating their endogenous inhibitor serine (or cysteine) peptidase inhibitor, clade A, member 3G (SERPINA3G; best known as SPI2A) [774, 775].”

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Authors
Kreuzaler, P. A., Staniszewska, A. D., Li, W., Omidvar, N., Kedjouar, B., Turkson, J., Poli, V., Flavell, R. A., Clarkson, R. W. E., & Watson, C. J.
Affiliations
  • University of Cambridge (GB)
  • Cardiff University (GB)
  • University of Central Florida (US)
  • University of Turin (IT)
  • Yale University (US)
Corresponding author
Watson, Christine J.
Venue
Nature Cell Biology
Published
2011-02-20
Volume
13
Issue
3
Pages
303-309
ISSN
  • 1465-7392 (ISSN-L)
  • 1476-4679
OpenAlex
W2142626890
Cited by
312
References
44
Citations by year
2026: 8 · 2025: 17 · 2024: 18 · 2023: 18 · 2022: 16 · 2021: 19 · 2020: 24 · 2019: 16 · 2018: 30 · 2017: 14 · 2016: 23 · 2015: 24 · 2014: 27 · 2013: 27 · 2012: 22
FWCI
11.03
Type
journal article
Language
en
Open access
Locations
  • Nature Cell Biology (publishedVersion)
  • PubMed (publishedVersion)
  • Journal of International Crisis and Risk Communication Research (submittedVersion)
  • Institutional Research Information System University of Turin (University of Turin) (submittedVersion)
Funders
Biotechnology and Biological Sciences Research Council (BB/C006836/1)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Health Sciences › Medicine › Oncology › Cytokine Signaling Pathways and Interactions
Keywords
STAT3, lysosomal membrane permeabilization, mammary gland involution, cathepsin B, cathepsin L, caspase-independent cell death, mammary epithelium, physiological cell death
MeSH terms
Animals, Cathepsin B, Cathepsins, Cell Membrane Permeability, Crosses, Genetic, Female, Gene Expression Regulation, Immunohistochemistry, Lysosomes, Mice, Inbred C57BL, Neoplasms, Mammary Neoplasms, Animal, Cell Death, STAT3 Transcription Factor, Mice, Cathepsin L

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