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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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