Cited by 1,322Cell death mechanisms and regulationNF-κB Signaling PathwaysImmune Response and Inflammation

Plasma membrane translocation of trimerized MLKL protein is required for TNF-induced necroptosis

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Cai, Zhenyu, Jitkaew, Siriporn, Zhao, Jie, Chiang, Hsueh-Cheng, Choksi, Swati, Liu, Jie, Ward, Yvona, Wu, Ling-gang +1 more·2014·Nature Cell Biology

Abstract

The mixed lineage kinase domain-like protein (MLKL) has recently been identified as a key RIP3 (receptor interacting protein 3) downstream component of tumour necrosis factor (TNF)-induced necroptosis. MLKL is phosphorylated by RIP3 and is recruited to the necrosome through its interaction with RIP3. However, it is still unknown how MLKL mediates TNF-induced necroptosis. Here, we report that MLKL forms a homotrimer through its amino-terminal coiled-coil domain and locates to the cell plasma membrane during TNF-induced necroptosis. By generating different MLKL mutants, we demonstrated that the plasma membrane localization of trimerized MLKL is critical for mediating necroptosis. Importantly, we found that the membrane localization of MLKL is essential for Ca(2+) influx, which is an early event of TNF-induced necroptosis. Furthermore, we identified that TRPM7 (transient receptor potential melastatin related 7) is a MLKL downstream target for the mediation of Ca(2+) influx and TNF-induced necroptosis. Hence, our study reveals a crucial mechanism of MLKL-mediated TNF-induced necroptosis.

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  • MLKL oligomerization promotes cascade involving Ca2+ influx presumably mediated by TRPM7, and PS exposure directly operated by MLKL.

    “Moreover, it has also been reported that MLKL oligomerization promotes a cascade of intracellular events involving (1) Ca2+ influx, which is presumably mediated by the MLKL target transient receptor potential cation channel subfamily M member 7 (TRPM7) [449]; and (2) PS exposure, which seems to be directly operated by MLKL [456].”

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Authors
Cai, Z., Jitkaew, S., Zhao, J., Chiang, H.-C., Choksi, S., Liu, J., Ward, Y., Wu, L.-G., & Liu, Z.-G.
Affiliations
National Institutes of Health (US)
Corresponding author
Liu, Zheng-Gang
Venue
Nature Cell Biology
Published
2013-12-08
Volume
16
Issue
1
Pages
55-65
ISSN
  • 1465-7392 (ISSN-L)
  • 1476-4679
OpenAlex
W2091363184
Cited by
1,322
References
33
Citations by year
2026: 60 · 2025: 113 · 2024: 112 · 2023: 98 · 2022: 126 · 2021: 140 · 2020: 116 · 2019: 99 · 2018: 106 · 2017: 103 · 2016: 101 · 2015: 83 · 2014: 62 · 2013: 2
FWCI
36.82
Type
journal article
Language
en
Update notices
erratum (2014-01-31)
Open access
Locations
  • Nature Cell Biology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health
  • National Cancer Institute (Z01BC010783, ZIASC010376)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › NF-κB Signaling Pathways
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
MLKL, necroptosis, TNF signaling, RIPK3, plasma membrane translocation, protein trimerization, coiled-coil domain, calcium influx, TRPM7, necrosome
MeSH terms
Animals, Calcium, Cell Membrane, Humans, Imidazoles, Indoles, Necrosis, Protein Kinases, Tumor Necrosis Factor-alpha, Apoptosis, Protein Serine-Threonine Kinases, Protein Structure, Tertiary, HT29 Cells, Jurkat Cells, Protein Transport, RNA, Small Interfering, TRPM Cation Channels, Mutant Proteins, Mice, Receptor-Interacting Protein Serine-Threonine Kinases, Protein Multimerization, HEK293 Cells

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