Oxidation of Reduced Graphene Oxide via Cellular Redox Signaling Modulates Actin-Mediated Neurotransmission
| Autor: | Yanping Jiang, Yiyuan Kang, Junrong Wu, Xiaoli Feng, Jia Liu, Longquan Shao, Yanli Zhang, Aijie Chen, Yaqing Zhang, Suhan Yin |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Reactive oxygen species medicine.drug_class Graphene General Engineering General Physics and Astronomy 02 engineering and technology Mitochondrion Neurotransmission 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Synapse chemistry Synaptic vesicle docking law medicine Biophysics General Materials Science Depressant 0210 nano-technology Actin |
| Zdroj: | ACS Nano. 14:3059-3074 |
| ISSN: | 1936-086X 1936-0851 |
| DOI: | 10.1021/acsnano.9b08078 |
| Popis: | Neurotransmission is the basis of brain functions, and controllable neurotransmission tuning constitutes an attractive approach for interventions in a wide range of neurologic disorders and for synapse-based therapeutic treatments. Graphene-family nanomaterials (GFNs) offer promising advantages for biomedical applications, particularly in neurology. Our study suggests that reduced graphene oxide (rGO) serves as a neurotransmission modulator and reveals that the cellular oxidation of rGO plays a crucial role in this effect. We found that rGO could be oxidized via cellular reactive oxygen species (ROS), as evidenced by an increased number of oxygen-containing functional groups on the rGO surface. Cellular redox signaling, which involves NADPH oxidases and mitochondria, was initiated and subsequently intensified rGO oxidation. The study further shows that the blockage of synaptic vesicle docking and fusion induced through a disturbance of actin dynamics is the underlying mechanism through which oxidized rGO exerts depressant effects on neurotransmission. Importantly, this depressant effect could be modulated by restricting the cellular ROS levels and stabilizing the actin dynamics. Taken together, our results identify the complicated biological effects of rGO as a controlled neurotransmission modulator and can provide helpful information for the future design of graphene materials for neurobiological applications. |
| Databáze: | OpenAIRE |
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