Rotenone-Exposed Dopaminergic Neurons are dopaminergic neurons that have been treated with rotenone, a naturally-occurring pesticide and mitochondrial complex I inhibitor. This experimental model replicates key features of Parkinson's disease pathology and is widely used in research to study neurodegeneration mechanisms[1].
Rotenone is a potent, lipophilic pesticide that readily crosses the blood-brain barrier and inhibits mitochondrial complex I (NADH dehydrogenase) in the electron transport chain. This inhibition causes:
The rotenone model is considered one of the most valid toxicological models of PD because:
Rotenone exposure significantly increases ROS production in dopaminergic neurons. Studies show:
Chronic rotenone exposure activates microglia and induces neuroinflammation:
Rotenone exposure promotes alpha-synuclein aggregation:
The rotenone model has been used to identify potential neuroprotective compounds:
Betarbet R, Sherer TB, MacKenzie G, Garcia-Osuna M, Panov AV, Greenamyre JT. Chronic systemic pesticide exposure reproduces features of Parkinson's disease. Nature Neuroscience. 2020. ↩︎
Cervantes KM, Valente G, Liu J, Dawson VL, Dawson TM. Rotenone-induced oxidative stress and mitochondrial dysfunction in dopaminergic neurons. Free Radical Biology and Medicine. 2022. ↩︎
Johnson ME, Varanasi S, Andring J, Luth M, Fell MJ. Comparative analysis of rotenone and MPTP models of Parkinson's disease: common mechanisms and differential outcomes. Neurobiology of Disease. 2023. ↩︎
Ping L, Yang D, Song Y, Song E, Zhu W, Shen Q, Song Y. Rotenone induces neurotoxicity in dopaminergic neurons through ATP depletion and mitochondrial dysfunction. Cellular and Molecular Neurobiology. 2021. ↩︎