Cited by 70Axon Guidance and Neuronal SignalingRedox biology and oxidative stressNeutrophil, Myeloperoxidase and Oxidative Mechanisms

Bidirectional interactions between NOX 2‐type NADPH oxidase and the F‐actin cytoskeleton in neuronal growth cones

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Munnamalai, Vidhya, Weaver, Cory J., Weisheit, Corinne E., Venkatraman, Prahatha, Agim, Zeynep Sena, Quinn, Mark T., Suter, Daniel M.·2014·Journal of Neurochemistry

Abstract

NADPH oxidases are important for neuronal function but detailed subcellular localization studies have not been performed. Here, we provide the first evidence for the presence of functional NADPH oxidase 2 (NOX2)‐type complex in neuronal growth cones and its bidirectional relationship with the actin cytoskeleton. NADPH oxidase inhibition resulted in reduced F‐actin content, retrograde F‐actin flow, and neurite outgrowth. Stimulation of NADPH oxidase via protein kinase C activation increased levels of hydrogen peroxide in the growth cone periphery. The main enzymatic NADPH oxidase subunit NOX 2/gp91 phox localized to the growth cone plasma membrane and showed little overlap with the regulatory subunit p40 phox. p40 phox itself exhibited colocalization with filopodial actin bundles. Differential subcellular fractionation revealed preferential association of NOX 2/gp91 phox and p40 phox with the membrane and the cytoskeletal fraction, respectively. When neurite growth was evoked with beads coated with the cell adhesion molecule ap CAM, we observed a significant increase in colocalization of p40 phox with NOX 2/gp91 phox at ap CAM adhesion sites. Together, these findings suggest a bidirectional functional relationship between NADPH oxidase activity and the actin cytoskeleton in neuronal growth cones, which contributes to the control of neurite outgrowth.image We have previously shown that reactive oxygen species (ROS) are critical for actin organization and dynamics in neuronal growth cones as well as neurite outgrowth. Here, we report that the cytosolic subunit p40 phox of the NOX2‐type NADPH oxidase complex is partially associated with F‐actin in neuronal growth cones, while ROS produced by this complex regulates F‐actin dynamics and neurite growth. These findings provide evidence for a bidirectional relationship between NADPH oxidase activity and the actin cytoskeleton in neuronal growth cones.

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  • High blue light can cause ROS to regulate chloroplast light-avoiding movement by regulating the polymerization or depolymerization of actin filaments.

    “High blue light can cause ROS (produced by high-energy concentrations to induce NADPH oxidase) to regulate chloroplast light-avoiding movement by regulating the polymerization or depolymerization of actin filaments”

    From The action of enhancing weak light capture via phototropic growth and chloroplast movement in plants (2022) · cites this paper as Munnamalai et al., 2014

    The Discussion (page not provided) says NADPH oxidase-derived ROS regulate actin organization and dynamics in neuronal growth cones. It does not address high-blue-light exposure or chloroplast light-avoidance movement, so the claim extends the reported mechanism to a different setting. (LLM, conf=0.88)

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Authors
Munnamalai, V., Weaver, C. J., Weisheit, C. E., Venkatraman, P., Agim, Z. S., Quinn, M. T., & Suter, D. M.
Affiliations
  • Purdue University West Lafayette (US)
  • Department of Biological Sciences Purdue University West Lafayette Indiana USA
  • Montana State University (US)
Venue
Journal of Neurochemistry
Publisher
Wiley
Published
2014-04-25
Volume
130
Issue
4
Pages
526-540
ISSN
  • 0022-3042 (ISSN-L)
  • 1471-4159
OpenAlex
W2056498047
Cited by
70
References
72
Citations by year
2026: 3 · 2025: 5 · 2024: 6 · 2023: 8 · 2022: 6 · 2021: 7 · 2020: 6 · 2019: 4 · 2018: 8 · 2017: 5 · 2016: 5 · 2015: 6 · 2014: 1
FWCI
2.59
Type
journal article
Language
en
Open access
Locations
  • Journal of Neurochemistry (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • NIH (R01 NS049233, P20 GM103500)
  • NSF (1146944-IOS)
  • Bindley Bioscience Center at Purdue University
  • Purdue University
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Axon Guidance and Neuronal Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Immunology and Microbiology › Immunology › Neutrophil, Myeloperoxidase and Oxidative Mechanisms
Keywords
NADPH oxidase, NOX2, gp91phox, p40phox, F-actin, actin cytoskeleton, growth cones, neurite outgrowth, reactive oxygen species, hydrogen peroxide, protein kinase C, filopodia, subcellular localization, actin dynamics
MeSH terms
Actins, Animals, Aplysia, Benzoxazoles, Cytochalasins, Cytoskeleton, Image Processing, Computer-Assisted, Immunohistochemistry, Microscopy, Fluorescence, Neurons, Phosphoproteins, Protein Kinase C, Triazoles, Triterpenes, Reactive Oxygen Species, Neural Cell Adhesion Molecules, NADPH Oxidases, Growth Cones, Immunoprecipitation, Pentacyclic Triterpenes

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