Cited by 65Nerve injury and regenerationNF-κB Signaling PathwaysCell death mechanisms and regulation

NF‐κB‐dependent regulation of brain‐derived neurotrophic factor in hippocampal neurons by X‐linked inhibitor of apoptosis protein

Kairisalo, Minna, Korhonen, Laura, Sepp, Mari, Pruunsild, Priit, Kukkonen, Jyrki P., Kivinen, Jenny, Timmusk, Tõnis, Blomgren, Klas +1 more·2009·European Journal of Neuroscience

Abstract

X chromosome‐linked inhibitor of apoptosis protein (XIAP) is an anti‐apoptotic protein enhancing cell survival. Brain‐derived neurotrophic factor (BDNF) also promotes neuronal viability but the links between XIAP and BDNF have remained unclear. We show here that the overexpression of XIAP increases BDNF in transgenic mice and cultured rat hippocampal neurons, whereas downregulation of XIAP by silencing RNA decreased BDNF. XIAP also stimulated BDNF signaling, as shown by increased phosphorylation of the TrkB receptor and the downstream molecule, cAMP response element‐binding protein. The mechanism involved nuclear factor‐κB (NF‐κB) activation and blocking of NF‐κB signaling inhibited the increased activities of BDNF promoters I and IV by XIAP. In neuronal cultures XIAP also upregulated interleukin (IL)‐6, which is an NF‐κB‐responsive gene. The addition of IL‐6 elevated whereas incubation with IL‐6‐blocking antibodies reduced BDNF in the neurons. BDNF itself activated NF‐κB in the neurons at higher concentrations. The data show that XIAP has trophic effects on hippocampal neurons by increasing BDNF and TrkB activity. The results reveal a cytokine network in the brain involving BDNF, IL‐6 and XIAP interconnected via the NF‐κB system.

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Crossref · 10.1111/j.1460-9568.2009.06898.x

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  • In healthy conditions, BDNF signaling induces activation of transcription factor NF-κB, which in turn induces de novo expression of the Bdnf gene.

    “In healthy conditions, BDNF signaling induces the activation of transcription factor NF-κB, which in turn induces de novo expression of the Bdnf gene [26, 192].”

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Authors
Kairisalo, M., Korhonen, L., Sepp, M., Pruunsild, P., Kukkonen, J. P., Kivinen, J., Timmusk, T., Blomgren, K., & Lindholm, D.
Affiliations
  • Tallinn University of Technology (EE)
  • Uppsala University (SE)
  • University of Gothenburg (SE)
Venue
European Journal of Neuroscience
Publisher
Wiley
Published
2009-09
Volume
30
Issue
6
Pages
958-966
ISSN
  • 0953-816X (ISSN-L)
  • 1460-9568
OpenAlex
W2032833209
Cited by
65
References
35
Citations by year
2026: 4 · 2025: 1 · 2024: 4 · 2023: 5 · 2022: 2 · 2021: 2 · 2020: 4 · 2019: 2 · 2018: 5 · 2017: 2 · 2016: 7 · 2015: 4 · 2014: 7 · 2013: 6 · 2012: 5
FWCI
1.38
Type
journal article
Language
en
Open access
closed
Locations
  • European Journal of Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nerve injury and regeneration
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › NF-κB Signaling Pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
Keywords
XIAP, brain-derived neurotrophic factor, NF-κB, hippocampal neurons, TrkB receptor, CREB, interleukin-6, neuroprotection, anti-apoptotic proteins, neurotrophic signaling, cytokine network
MeSH terms
Analysis of Variance, Animals, Cells, Cultured, Hippocampus, Mice, Transgenic, Nerve Net, Neurons, RNA, Messenger, Transfection, Blotting, Western, Interleukin-6, Up-Regulation, NF-kappa B, Brain-Derived Neurotrophic Factor, Reverse Transcriptase Polymerase Chain Reaction, Oligonucleotide Array Sequence Analysis, Receptor, trkB, Gene Silencing, RNA, Small Interfering, Mice, Rats, X-Linked Inhibitor of Apoptosis Protein

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