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Updated: Feb 15, 2026
Modeling Neuronal Death and Degeneration in Mouse Primary Cerebellar Granule Neurons
Published on: November 6, 2017
Cylindromatosis mediates neuronal cell death in vitro and in vivo
Goutham K Ganjam1, Nicole Angela Terpolilli2, Sebastian Diemert1
1Institute for Pharmacology and Clinical Pharmacy, Biochemical-Pharmacological Center Marburg, Marburg Center for Mind, Brain and Behavior - MCMBB, University of Marburg, Marburg, Germany.
Abstract:
The tumor-suppressor cylindromatosis (CYLD) is a deubiquitinating enzyme and key regulator of cell proliferation and inflammation. A genome-wide siRNA screen linked CYLD to receptor interacting protein-1 (RIP1) kinase-mediated necroptosis; however, the exact mechanisms of CYLD-mediated cell death remain unknown. Therefore, we investigated the precise role of CYLD in models of neuronal cell death in vitro and evaluated whether CYLD deletion affects brain injury in vivo. In vitro, downregulation of CYLD increased RIP1 ubiquitination, prevented RIP1/RIP3 complex formation, and protected neuronal cells from oxidative death. Similar protective effects were achieved by siRNA silencing of RIP1 or RIP3 or by pharmacological inhibition of RIP1 with necrostatin-1. In vivo, CYLD knockout mice were protected from trauma-induced brain damage compared to wild-type littermate controls. These findings unravel the mechanisms of CYLD-mediated cell death signaling in damaged neurons in vitro and suggest a cell death-mediating role of CYLD in vivo.
Insights
The cylindromatosis (CYLD) protein regulates cell death. CYLD deletion protects neurons from oxidative stress and reduces brain injury, revealing its role in cell death signaling and neuroprotection.
Area of Science:
- Neuroscience
- Molecular Biology
- Cell Biology
Background:
- The cylindromatosis (CYLD) protein is a deubiquitinating enzyme regulating cell proliferation and inflammation.
- CYLD has been linked to receptor interacting protein-1 (RIP1) kinase-mediated necroptosis, but its precise role in cell death is unclear.
Purpose of the Study:
- To investigate the role of CYLD in neuronal cell death in vitro.
- To evaluate the effect of CYLD deletion on brain injury in vivo.
Main Methods:
- Downregulation of CYLD using siRNA in neuronal cell models.
- Assessment of RIP1 ubiquitination and RIP1/RIP3 complex formation.
- Evaluation of neuronal cell death following oxidative stress.
- Analysis of brain injury in CYLD knockout mice after trauma.
Main Results:
- CYLD downregulation increased RIP1 ubiquitination and prevented RIP1/RIP3 complex formation, protecting neurons from oxidative death.
- Silencing RIP1 or RIP3, or inhibiting RIP1 pharmacologically, mimicked CYLD's protective effects.
- CYLD knockout mice exhibited reduced trauma-induced brain damage compared to wild-type controls.
Conclusions:
- CYLD plays a role in mediating neuronal cell death signaling pathways.
- CYLD deletion confers protection against neuronal death and brain injury, suggesting therapeutic potential.
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