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Shi W, Chen QY, Ma Y, Wan J, Li XH, Zhuo M. Selective enhancement of fear extinction by inhibiting neuronal adenylyl cyclase 1 (AC1) in aged mice. Mol Brain 2024; 17:11. [PMID: 38389098 PMCID: PMC10885434 DOI: 10.1186/s13041-024-01083-9] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 02/12/2024] [Indexed: 02/24/2024] Open
Abstract
Adenylyl cyclase 1 (AC1) is a selective subtype of ACs, which is selectively expressed in neurons. The activation of AC1 is activity-dependent, and AC1 plays an important role in cortical excitation that contributes to chronic pain and related emotional disorders. Previous studies have reported that human-used NB001 (hNB001, a selective AC1 inhibitor) produced analgesic effects in different animal models of chronic pain. However, the potential effects of hNB001 on learning and memory have been less investigated. In the present study, we found that hNB001 affected neither the induction nor the expression of trace fear, but selectively enhanced the relearning ability during the extinction in aged mice. By contrast, the same application of hNB001 did not affect recent, remote auditory fear memory, or remote fear extinction in either adult or aged mice. Furthermore, a single or consecutive 30-day oral administration of hNB001 did not affect acute nociceptive response, motor function, or anxiety-like behavior in either adult or aged mice. Our results are consistent with previous findings that inhibition of AC1 did not affect general sensory, emotional, and motor functions in adult mice, and provide strong evidence that inhibiting the activity of AC1 may be beneficial for certain forms of learning and memory in aged mice.
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Affiliation(s)
- Wantong Shi
- Center for Neuron and Disease, Frontier Institutes of Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, China
- Zhuomin Institute of Brain Research, Qingdao, Shandong, China
| | - Qi-Yu Chen
- Zhuomin Institute of Brain Research, Qingdao, Shandong, China
- CAS Key Laboratory of Brain Connectome and Manipulation, Interdisciplinary Center for Brain Information, Chinese Academy of Sciences Shenzhen Institute of Advanced Technology, Shenzhen, Guangdong, China
| | - Yujie Ma
- Oujiang Laboratory, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jinjin Wan
- Oujiang Laboratory, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Xu-Hui Li
- Center for Neuron and Disease, Frontier Institutes of Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, China
- Zhuomin Institute of Brain Research, Qingdao, Shandong, China
| | - Min Zhuo
- Center for Neuron and Disease, Frontier Institutes of Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, China.
- Zhuomin Institute of Brain Research, Qingdao, Shandong, China.
- Oujiang Laboratory, Wenzhou Medical University, Wenzhou, Zhejiang, China.
- Department of Physiology, Faculty of Medicine, University of Toronto, Medical Science Building, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada.
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Lee J, Lee HR, Kim JI, Baek J, Jang EH, Lee J, Kim M, Lee RU, Kim S, Park P, Kaang BK. Transient cAMP elevation during systems consolidation enhances remote contextual fear memory. Neurobiol Learn Mem 2020; 169:107171. [PMID: 31978552 DOI: 10.1016/j.nlm.2020.107171] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 12/31/2019] [Accepted: 01/19/2020] [Indexed: 11/30/2022]
Abstract
Memory is stored in our brains over a temporally graded transition. With time, recently formed memories are transformed into remote memories for permanent storage; multiple brain regions, such as the hippocampus and neocortex, participate in this process. In this study, we aimed to understand the molecular mechanism of systems consolidation of memory and to investigate the brain regions that contribute to this regulation. We first carried out a contextual fear memory test using a transgenic mouse line, which expressed exogenously-derived Aplysia octopamine receptors in the forebrain region, such that, in response to octopamine treatment, cyclic adenosine monophosphate (cAMP) levels could be transiently elevated. From this experiment, we revealed that transient elevation of cAMP levels in the forebrain during systems consolidation led to an enhancement in remote fear memory and increased miniature excitatory synaptic currents in layer II/III of the anterior cingulate cortex (ACC). Furthermore, using an adeno-associated-virus-driven DREADD system, we investigated the specific regions in the forebrain that contribute to the regulation of memory transfer into long-term associations. Our results implied that transient elevation of cAMP levels was induced chemogenetically in the ACC, but not in the hippocampus, and showed a significant enhancement of remote memory. This finding suggests that neuronal activation during systems consolidation through the elevation of cAMP levels in the ACC contributes to remote memory enhancement.
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Affiliation(s)
- Jaehyun Lee
- Interdisciplinary Program in Neuroscience, Seoul National University, 1 Gwanangno, Gwanak-gu, Seoul 08826, Republic of Korea; Neurobiology Laboratory, Department of Biological Sciences, College of Natural Sciences, Seoul National University, Gwanangno 599, Gwanak-Gu, Seoul 08826, Republic of Korea
| | - Hye-Ryeon Lee
- Neurobiology Laboratory, Department of Biological Sciences, College of Natural Sciences, Seoul National University, Gwanangno 599, Gwanak-Gu, Seoul 08826, Republic of Korea
| | - Jae-Ick Kim
- Neurobiology Laboratory, Department of Biological Sciences, College of Natural Sciences, Seoul National University, Gwanangno 599, Gwanak-Gu, Seoul 08826, Republic of Korea
| | - Jinhee Baek
- Neurobiology Laboratory, Department of Biological Sciences, College of Natural Sciences, Seoul National University, Gwanangno 599, Gwanak-Gu, Seoul 08826, Republic of Korea
| | - Eun-Hae Jang
- Neurobiology Laboratory, Department of Biological Sciences, College of Natural Sciences, Seoul National University, Gwanangno 599, Gwanak-Gu, Seoul 08826, Republic of Korea
| | - Jihye Lee
- Neurobiology Laboratory, Department of Biological Sciences, College of Natural Sciences, Seoul National University, Gwanangno 599, Gwanak-Gu, Seoul 08826, Republic of Korea
| | - Myeongwon Kim
- Neurobiology Laboratory, Department of Biological Sciences, College of Natural Sciences, Seoul National University, Gwanangno 599, Gwanak-Gu, Seoul 08826, Republic of Korea
| | - Ro Un Lee
- Neurobiology Laboratory, Department of Biological Sciences, College of Natural Sciences, Seoul National University, Gwanangno 599, Gwanak-Gu, Seoul 08826, Republic of Korea
| | - Somi Kim
- Neurobiology Laboratory, Department of Biological Sciences, College of Natural Sciences, Seoul National University, Gwanangno 599, Gwanak-Gu, Seoul 08826, Republic of Korea
| | - Pojeong Park
- Neurobiology Laboratory, Department of Biological Sciences, College of Natural Sciences, Seoul National University, Gwanangno 599, Gwanak-Gu, Seoul 08826, Republic of Korea
| | - Bong-Kiun Kaang
- Interdisciplinary Program in Neuroscience, Seoul National University, 1 Gwanangno, Gwanak-gu, Seoul 08826, Republic of Korea; Neurobiology Laboratory, Department of Biological Sciences, College of Natural Sciences, Seoul National University, Gwanangno 599, Gwanak-Gu, Seoul 08826, Republic of Korea.
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Verma D, Jamil S, Tasan RO, Lange MD, Pape HC. Single stimulation of Y2 receptors in BNSTav facilitates extinction and dampens reinstatement of fear. Psychopharmacology (Berl) 2019; 236:281-91. [PMID: 30443793 DOI: 10.1007/s00213-018-5080-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 10/16/2018] [Indexed: 10/27/2022]
Abstract
RATIONALE Return of fear by re-exposure to an aversive event is a major obstacle in the treatment of fear-related disorders. Recently, we demonstrated that local pharmacological stimulation of neuropeptide Y type 2 receptors (Y2R) in anteroventral bed nucleus of stria terminalis (BNSTav) facilitates fear extinction and attenuates retrieval of remote fear with or without concomitant extinction training. Whether Y2R activation could also protect against re-exposure to traumatic events is still unknown. OBJECTIVE Therefore, we investigated reinstatement of remote fear following early Y2R manipulation in BNSTav in relation to concomitant extinction training in mice. METHODS We combined local pharmacological manipulation of Y2Rs in BNSTav with or without extinction training and tested for reinstatement of remote fear 15 days later. Furthermore, we employed immediate early gene mapping to monitor related local brain activation. RESULTS Y2R stimulation by local injection of NPY3-36 into BNSTav facilitated extinction, reduced fear reinstatement at remote stages, and mimicked the influence of extinction in groups without prior extinction training. In contrast, Y2R antagonism (JNJ-5207787) delayed extinction and increased reinstatement. Y2R treatment immediately before remote fear tests had no effect. Concomitantly, Y2R activation at early time points reduced the number of c-Fos positive neurons in BNSTav during testing of reinstated remote fear. CONCLUSION Local Y2R stimulation in BNSTav promotes fear extinction and stabilizes suppression of reinstated fear through a long-term influence, even without extinction training. Thus, Y2Rs in BNST are crucial pharmacological targets for extinction-based remote fear suppression.
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Verma D, Tasan R, Sperk G, Pape HC. Neuropeptide Y2 receptors in anteroventral BNST control remote fear memory depending on extinction training. Neurobiol Learn Mem 2018; 149:144-153. [PMID: 29408468 DOI: 10.1016/j.nlm.2018.01.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 12/15/2017] [Accepted: 01/23/2018] [Indexed: 12/12/2022]
Abstract
The anterior bed nucleus of stria terminalis (BNST) is involved in reinstatement of extinguished fear, and neuropeptide Y2 receptors influence local synaptic signaling. Therefore, we hypothesized that Y2 receptors in anteroventral BNST (BNSTav) interfere with remote fear memory and that previous fear extinction is an important variable. C57BL/6NCrl mice were fear-conditioned, and a Y2 receptor-specific agonist (NPY3-36) or antagonist (JNJ-5207787) was applied in BNSTav before fear retrieval at the following day. Remote fear memory was tested on day 16 in two groups of mice, which had (experiment 1) or had not (experiment 2) undergone extinction training after conditioning. In the group with extinction training, tests of remote fear memory revealed partial retrieval of extinction, which was prevented after blockade of Y2 receptors in BNSTav. No such effect was observed in the group with no extinction training, but stimulation of Y2 receptors in BNSTav mimicked the influence of extinction during tests of remote fear memory. Pharmacological manipulation of Y2 receptors in BNSTav before fear acquisition (experiment 3) had no effect on fear memory retrieval, extinction or remote fear memory. Furthermore, partial retrieval of extinction during tests of remote fear memory was associated with changes in number of c-Fos expressing neurons in BNSTav, which was prevented or mimicked upon Y2 blockade or stimulation in BNSTav. These results indicate that Y2 receptor manipulation in BNSTav interferes with fear memory and extinction retrieval at remote stages, likely through controlling neuronal activity in BNSTav during extinction training.
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Affiliation(s)
- Dilip Verma
- Institute of Physiology 1, Westfälische Wilhelms-University, D-48149 Münster, Germany
| | - Ramon Tasan
- Institute of Pharmacology, Medical University Innsbruck, 6020 Innsbruck, Austria
| | - Guenther Sperk
- Institute of Pharmacology, Medical University Innsbruck, 6020 Innsbruck, Austria
| | - Hans-Christian Pape
- Institute of Physiology 1, Westfälische Wilhelms-University, D-48149 Münster, Germany.
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