Cited by 538Advanced Glycation End Products researchCell death mechanisms and regulationImmune Response and Inflammation

The extracellular release of HMGB1 during apoptotic cell death

Bell, Charles W., Jiang, Weiwen, Reich, Charles F., Pisetsky, David S.·2006·American Journal of Physiology-Cell Physiology

Abstract

High mobility group box 1 protein (HMGB1) is a non-histone nuclear protein with dual function. Inside the cell, HMGB1 binds DNA and regulates transcription, whereas outside the cell, it serves as a cytokine and mediates the late effects of LPS. The movement of HMGB1 into the extracellular space has been demonstrated for macrophages stimulated with LPS as well as cells undergoing necrosis but not apoptosis. The differential release of HMGB1 during death processes could reflect the structure of chromatin in these settings as well as the mechanisms for HMGB1 translocation. Since apoptotic cells can release some nuclear molecules such as DNA to which HMGB1 can bind, we therefore investigated whether HMGB1 release can occur during apoptosis as well as necrosis. For this purpose, Jurkat cells were treated with chemical inducers of apoptosis (staurosporine, etoposide, or camptothecin), and HMGB1 release into the medium was assessed by Western blotting. Results of these experiments indicate that HMGB1 appears in the media of apoptotic Jurkat cells in a time-dependent manner and that this release can be reduced by Z-VAD-fmk. Panc-1 and U937 cells treated with these agents showed similar release. In addition, HeLa cells induced to undergo apoptosis showed HMGB1 release. Furthermore, we showed using confocal microscopy that HMGB1 and DNA change their nuclear location in Jurkat cells undergoing apoptosis. Together, these studies indicate that HMGB1 release can occur during the course of apoptosis as well as necrosis and suggest that the release process may vary with cell type.

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Crossref · 10.1152/ajpcell.00616.2005

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  • HMGB1 can be released during secondary necrosis following apoptosis, not only from the nucleus during primary necrosis.

    “Although it was initially thought that HMGB1 is released only from the nucleus during primary necrosis, recent data indicate that HMGB1 can be released during secondary necrosis following apoptosis 27,48–50.”

    From Immunogenic and tolerogenic cell death (2009) · cites this paper as [49]

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Authors
Bell, C. W., Jiang, W., Reich, C. F., & Pisetsky, D. S.
Affiliations
Duke Medical Center (US)
Venue
American Journal of Physiology-Cell Physiology
Published
2006-12
Volume
291
Issue
6
Pages
C1318-C1325
ISSN
  • 0363-6143 (ISSN-L)
  • 1522-1563
OpenAlex
W2166495164
Cited by
538
References
50
Citations by year
2026: 15 · 2025: 15 · 2024: 19 · 2023: 21 · 2022: 25 · 2021: 26 · 2020: 21 · 2019: 18 · 2018: 22 · 2017: 19 · 2016: 25 · 2015: 37 · 2014: 35 · 2013: 44 · 2012: 32
FWCI
17.55
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Physiology-Cell Physiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Allergy and Infectious Diseases (AI44808)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Advanced Glycation End Products research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
HMGB1, extracellular HMGB1 release, apoptosis, necrosis, HMGB1 translocation, Jurkat cells, staurosporine, etoposide, camptothecin, z-VAD-fmk, chromatin structure, cell death
MeSH terms
Amino Acid Chloromethyl Ketones, Antineoplastic Agents, Phytogenic, Camptothecin, Cell Line, Cycloheximide, Enzyme Inhibitors, Etoposide, Humans, Hydroxamic Acids, Protein Synthesis Inhibitors, Tumor Necrosis Factor-alpha, Cysteine Proteinase Inhibitors, Apoptosis, Staurosporine, HMGB1 Protein

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