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Saber Marouf B, Reboreda A, Theissen F, Kaushik R, Sauvage M, Dityatev A, Yoshida M. TRPC4 Channel Knockdown in the Hippocampal CA1 Region Impairs Modulation of Beta Oscillations in Novel Context. Biology (Basel) 2023; 12:biology12040629. [PMID: 37106829 PMCID: PMC10135742 DOI: 10.3390/biology12040629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 04/17/2023] [Accepted: 04/17/2023] [Indexed: 04/29/2023]
Abstract
Hippocampal local field potentials (LFP) are highly related to behavior and memory functions. It has been shown that beta band LFP oscillations are correlated with contextual novelty and mnemonic performance. Evidence suggests that changes in neuromodulators, such as acetylcholine and dopamine, during exploration in a novel environment underlie changes in LFP. However, potential downstream mechanisms through which neuromodulators may alter the beta band oscillation in vivo remain to be fully understood. In this paper, we study the role of the membrane cationic channel TRPC4, which is modulated by various neuromodulators through G-protein-coupled receptors, by combining shRNA-mediated TRPC4 knockdown (KD) with LFP measurements in the CA1 region of the hippocampus in behaving mice. We demonstrate that the increased beta oscillation power seen in the control group mice in a novel environment is absent in the TRPC4 KD group. A similar loss of modulation was also seen in the low-gamma band oscillations in the TRPC4 KD group. These results demonstrate that TRPC4 channels are involved in the novelty-induced modulation of beta and low-gamma oscillations in the CA1 region.
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Affiliation(s)
- Babak Saber Marouf
- Institute of Physiology, Medical Faculty, Otto-Von-Guericke University, 39120 Magdeburg, Germany
- Cognitive Neurophysiology, German Center for Neurodegenerative Diseases (DZNE), 39120 Magdeburg, Germany
- FAM Department, Leibniz Institute for Neurobiology (LIN), 39118 Magdeburg, Germany
| | - Antonio Reboreda
- Cognitive Neurophysiology, German Center for Neurodegenerative Diseases (DZNE), 39120 Magdeburg, Germany
- FAM Department, Leibniz Institute for Neurobiology (LIN), 39118 Magdeburg, Germany
| | - Frederik Theissen
- Cognitive Neurophysiology, German Center for Neurodegenerative Diseases (DZNE), 39120 Magdeburg, Germany
- FAM Department, Leibniz Institute for Neurobiology (LIN), 39118 Magdeburg, Germany
| | - Rahul Kaushik
- Molecular Neuroplasticity Group, German Center for Neurodegenerative Diseases (DZNE), 39120 Magdeburg, Germany
| | - Magdalena Sauvage
- FAM Department, Leibniz Institute for Neurobiology (LIN), 39118 Magdeburg, Germany
- Medical Faculty, Otto-von-Guericke University (OvGU), 39120 Magdeburg, Germany
- Center for Behavioral Brain Sciences (CBBS), 39106 Magdeburg, Germany
| | - Alexander Dityatev
- Molecular Neuroplasticity Group, German Center for Neurodegenerative Diseases (DZNE), 39120 Magdeburg, Germany
- Medical Faculty, Otto-von-Guericke University (OvGU), 39120 Magdeburg, Germany
- Center for Behavioral Brain Sciences (CBBS), 39106 Magdeburg, Germany
| | - Motoharu Yoshida
- Cognitive Neurophysiology, German Center for Neurodegenerative Diseases (DZNE), 39120 Magdeburg, Germany
- FAM Department, Leibniz Institute for Neurobiology (LIN), 39118 Magdeburg, Germany
- Center for Behavioral Brain Sciences (CBBS), 39106 Magdeburg, Germany
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