Cited by 31Redox biology and oxidative stressProtein Kinase Regulation and GTPase SignalingNerve injury and regeneration

Reactive Oxygen Species Are Required for 5-HT-Induced Transactivation of Neuronal Platelet-Derived Growth Factor and TrkB Receptors, but Not for ERK1/2 Activation

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Kruk, Jeff S., Vasefi, Maryam S., Heikkila, John J., Beazely, Michael A.·2013·PLoS ONE

Abstract

High concentrations of reactive oxygen species (ROS) induce cellular damage, however at lower concentrations ROS act as intracellular second messengers. In this study, we demonstrate that serotonin (5-HT) transactivates the platelet-derived growth factor (PDGF) type β receptor as well as the TrkB receptor in neuronal cultures and SH-SY5Y cells, and that the transactivation of both receptors is ROS-dependent. Exogenous application of H₂O₂ induced the phosphorylation of these receptors in a dose-dependent fashion, similar to that observed with 5-HT. However the same concentrations of H₂O₂ failed to increase ERK1/2 phosphorylation. Yet, the NADPH oxidase inhibitors diphenyleneiodonium chloride and apocynin blocked both 5-HT-induced PDGFβ receptor phosphorylation and ERK1/2 phosphorylation. The increases in PDGFβ receptor and ERK1/2 phosphorylation were also dependent on protein kinase C activity, likely acting upstream of NADPH oxidase. Additionally, although the ROS scavenger N-acetyl-l-cysteine abrogated 5-HT-induced PDGFβ and TrkB receptor transactivation, it was unable to prevent 5-HT-induced ERK1/2 phosphorylation. Thus, the divergence point for 5-HT-induced receptor tyrosine kinase (RTK) transactivation and ERK1/2 phosphorylation occurs at the level of NADPH oxidase in this system. The ability of 5-HT to induce the production of ROS resulting in transactivation of both PDGFβ and TrkB receptors may suggest that instead of a single GPCR to single RTK pathway, a less selective, more global RTK response to GPCR activation is occurring.

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  • ROS oxidize -SH groups of cysteine residues in protein kinases A, C, and D, receptor tyrosine kinase, and Ca/calmodulin independent protein kinase II, which phosphorylate target proteins.

    “ROS oxidize -SH groups of cysteine residues in protein kinases A, C, and D, receptor tyrosine kinase (RTK), and Ca/calmodulin independent protein kinase II, which in turn phosphorylate target proteins participating in various signaling mechanisms (Kruk et al. 2013).”

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Authors
Kruk, J. S., Vasefi, M. S., Heikkila, J. J., & Beazely, M. A.
Affiliations
University of Waterloo (CA)
Corresponding author
Beazely, Michael A.
Venue
PLoS ONE
Published
2013-09-27
Volume
8
Issue
9
Pages
e77027
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2011421397
Cited by
31
References
61
Citations by year
2025: 1 · 2024: 2 · 2023: 1 · 2021: 4 · 2020: 6 · 2019: 1 · 2018: 6 · 2017: 2 · 2016: 3 · 2015: 1 · 2014: 4
FWCI
1.19
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
University of Waterloo
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nerve injury and regeneration
Keywords
reactive oxygen species, serotonin, PDGF receptor beta, TrkB receptor, ERK1/2 phosphorylation, receptor tyrosine kinase transactivation, NADPH oxidase, hydrogen peroxide, protein kinase C, SH-SY5Y cells, G protein-coupled receptor signaling
MeSH terms
Animals, Enzyme Activation, Humans, Neurons, Phosphorylation, Serotonin, Transcriptional Activation, Reactive Oxygen Species, NADPH Oxidases, Mitogen-Activated Protein Kinase 1, Receptor, Platelet-Derived Growth Factor beta, Receptor, trkB, Cell Line, Tumor, Mitogen-Activated Protein Kinase 3, Mice

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