Cited by 70Nerve injury and regenerationWnt/β-catenin signaling in development and cancerNeuroscience and Neuropharmacology Research

BDNF promotes the growth of human neurons through crosstalk with the Wnt/β-catenin signaling pathway via GSK-3β

Yang, Jin-wei, Ru, Jin, Ma, Wei, Gao, Yan, Liang, Zhang, Liu, Jia, Guo, Jian-hui, Li, Li-yan·2015·Neuropeptides

Abstract

Brain-derived neurotrophic factor (BDNF) plays an important role in neuronal growth; however, the downstream regulatory mechanisms remain unclear. In this study, we investigated whether BDNF exerts its neurotrophic effects through the Wnt/β-catenin signaling pathway in human embryonic spinal cord neurons in vitro. We found that neuronal growth (soma size and average neurite length) was increased by transfection with a BDNF overexpression plasmid. Western blotting and real-time quantitative PCR showed that expression of the BDNF pathway components TrkB, PI3K, Akt and PLC-γ was increased by BDNF overexpression. Furthermore, the Wnt signaling factors Wnt, Frizzled and Dsh and the downstream target β-catenin were upregulated, whereas GSK-3β was downregulated. In contrast, when BDNF signaling was downregulated with BDNF siRNA, the growth of neurons was decreased. Furthermore, BDNF signaling factors, Wnt pathway components and β-catenin were all downregulated, whereas GSK-3β was upregulated. This suggests that BDNF affects the growth of neurons in vitro through crosstalk with Wnt signaling, and that GSK-3β may be a critical factor linking these two pathways. To evaluate this possibility, we treated neurons with 6-bromoindirubin-3'-oxime (BIO), a small molecule GSK-3β inhibitor. BIO reduced the effects of BDNF upregulation/downregulation on soma size and average neurite length, and suppressed the impact of BDNF modulation on the Wnt signaling pathway. Taken together, our findings suggest that BDNF promotes the growth of neurons in vitro through crosstalk with the Wnt/β-catenin signaling pathway, and that this interaction may be mediated by GSK-3β.

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Crossref · 10.1016/j.npep.2015.08.005

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Authors
Yang, J.-W., Ru, J., Ma, W., Gao, Y., Liang, Z., Liu, J., Guo, J.-H., & Li, L.-Y.
Affiliations
  • Kunming Medical University (CN)
  • First People's Hospital of Yunnan Province (CN)
Venue
Neuropeptides
Publisher
Elsevier BV
Published
2015-12
Volume
54
Pages
35-46
ISSN
0143-4179 (ISSN-L)
OpenAlex
W1146627176
Cited by
70
References
75
Citations by year
2026: 9 · 2025: 6 · 2024: 4 · 2023: 5 · 2022: 12 · 2021: 5 · 2020: 6 · 2019: 6 · 2018: 5 · 2017: 8 · 2016: 4
FWCI
2.63
Type
journal article
Language
en
Open access
closed
Locations
  • Neuropeptides (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Natural Science Foundation of China (30960156, 31260253)
  • Priority Union Foundation of Yunnan Provincial Science and Technology Department
  • Kunming Medical University (2012FB002)
  • Special Major Foundation of Yunnan Province Education Department (No. ZD2013002)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nerve injury and regeneration
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Wnt/β-catenin signaling in development and cancer
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
brain-derived neurotrophic factor, Wnt/β-catenin signaling, GSK3β, neuronal growth, signaling crosstalk, TrkB, PI3K/Akt signaling, phospholipase C-gamma, Frizzled receptors, DSH, neurite length, soma size
MeSH terms
Glycogen Synthase Kinase 3 beta, Cell Survival, Cells, Cultured, Fetus, Humans, Indoles, Neurons, Oximes, RNA, Messenger, Spinal Cord, Brain-Derived Neurotrophic Factor, Glycogen Synthase Kinase 3, Wnt Signaling Pathway

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