Cited by 13Cell death mechanisms and regulationNF-κB Signaling PathwaysDeath, Funerary Practices, and Mourning

The DOI matches its Crossref record; 46 of the 46 references it cites were found in a registry or an index.

TRADD mediates the tumor necrosis factor-induced apoptosis of L929 cells in the absence of RIP3

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Abstract

Receptor-interacting protein kinase 3 (RIP3) is a critical initiator in mediating necroptosis induced by tumor necrosis factor alpha (TNFα) in L929 cells, so knockdown of RIP3 inhibits TNFα-induced L929 cell necroptosis. However, RIP3 knockdown was shown to switch TNFα-induced necroptosis to apoptosis in L929 cells in other studies. Therefore, whether RIP3 knockdown blocks the TNFα-induced death of L929 cells is controversial. In this study, TNFα activated caspase pathway and induced cell death in RIP3 knockdown L929 cells, and the RIP3-independent cell death had been blocked by Z-VAD-FMK (pan-caspase inhibitor) or caspase 8 knockdown, demonstrating that RIP3 knockdown switched TNFα-induced necroptosis to caspase-dependent apoptosis. Although both TNF receptor type 1-associated death domain protein (TRADD) and RIP1 have been reported to mediate TNFα-induced apoptosis, the knockdown of TRADD, but not RIP1, suppressed TNFα-induced activation of the caspase pathway and subsequent apoptosis in RIP3 knockdown L929 cells. In addition, TRADD bound and activated caspase 8 during the RIP3-independent apoptosis process, indicating that TRADD initiates RIP3-independent apoptosis by activating the caspase pathway. Collectively, we identified the target and mechanism underlying RIP3-independent apoptosis and elucidated the coordinated roles of RIP3 and TRADD in mediating the programmed cell death of L929 cells following TNFα stimulation.

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Metadata

Authors
Chang, X., Wang, L., Wang, Z., Wu, S., Zhu, X., Hu, S., Wang, Y., Yu, J., & Chen, G.
Affiliations
Institute of Basic Medical Sciences of the Chinese Academy of Medical Sciences (CN)
Corresponding author
  • Wang, Yu
  • Yu, Jiyun
  • Chen, Guozhu
Venue
Scientific Reports
Published
2017-11-23
Volume
7
Issue
1
Pages
16111-16111
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2770019817
Cited by
13
References
46
Citations by year
2026: 1 · 2025: 1 · 2024: 2 · 2022: 1 · 2021: 3 · 2020: 4 · 2019: 1
FWCI
0.56
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
National Natural Science Foundation of China (31201041, 31371434)
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
  • Social Sciences › Anthropology › Death, Funerary Practices, and Mourning
Keywords
TRADD, RIPK3, RIPK1, TNF-α, apoptosis, necroptosis, caspase-8, caspase pathway, L929 fibroblasts, programmed cell death
MeSH terms
Animals, Cell Line, Tumor Necrosis Factor-alpha, Signal Transduction, Cell Death, Apoptosis, Mice, Caspase 8, TNF Receptor-Associated Death Domain Protein, Receptor-Interacting Protein Serine-Threonine Kinases

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