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COUP-TFI/Nr2f1 Orchestrates Intrinsic Neuronal Activity during Development of the Somatosensory Cortex
Isabel Del Pino1,2, Chiara Tocco3, Elia Magrinelli3,4
1Université de Bordeaux, Inserm U1215, Neurocentre Magendie, 33077 Bordeaux, France.
Cerebral Cortex (New York, N.Y. : 1991)
|June 24, 2020
Summary
Loss of Nr2f1 (also known as COUP-TFI) disrupts early brain development, impacting neuronal network activity and excitability in the somatosensory cortex. This gene is crucial for sculpting cortical maps during development.
Area of Science:
- Neuroscience
- Developmental Biology
- Genetics
Background:
- Functional cortical maps arise from interactions between genetic factors and neural activity.
- Transcriptional regulation plays a key role in shaping neuronal network activity and excitability.
Purpose of the Study:
- To investigate how the transcription factor Nr2f1 (COUP-TFI) influences network activity and neuronal excitability in the developing neocortex.
- To understand the role of Nr2f1 in the specification of the primary somatosensory (S1) cortex.
Main Methods:
- Utilized mice genetically deficient for Nr2f1.
- Examined spontaneous network activity and synchronization in the S1 cortex.
- Assessed intrinsic excitability and morphological features of layer V pyramidal neurons.
- Identified voltage-gated ion channels regulated by Nr2f1.
Main Results:
- Cortical loss of Nr2f1 impaired spontaneous network activity and synchronization in the perinatal S1 cortex.
- Alterations in intrinsic excitability and morphology of layer V pyramidal neurons were observed.
- Specific voltage-gated ion channels regulated by Nr2f1 were identified, potentially affecting bioelectrical properties during S1 cortex development.
Conclusions:
- Nr2f1 is critical for regulating neuronal excitability and network activity during neocortical development.
- Nr2f1 influences the emergence of cortical network activity by modulating ion channel function within specific developmental time windows.
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