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Zhang H, Hu S, Yang P, Long H, Ma Q, Yin D, Xu G. HDAC9-mediated calmodulin deacetylation induces memory impairment in Alzheimer's disease. CNS Neurosci Ther 2024; 30:e14573. [PMID: 38421101 PMCID: PMC10850929 DOI: 10.1111/cns.14573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 11/20/2023] [Accepted: 12/04/2023] [Indexed: 03/02/2024] Open
Abstract
AIMS Alzheimer's disease (AD) is a neurodegenerative disease characterized by progressive cognitive dysfunction and memory impairment. AD pathology involves protein acetylation. Previous studies have mainly focused on histone acetylation in AD, however, the roles of nonhistone acetylation in AD are less explored. METHODS The protein acetylation and expression levels were detected by western blotting and co-immunoprecipitation. The stoichiometry of acetylation was measured by home-made and site-specific antibodies against acetylated-CaM (Ac-CaM) at K22, K95, and K116. Hippocampus-dependent learning and memory were evaluated by using the Morris water maze, novel object recognition, and contextual fear conditioning tests. RESULTS We showed that calmodulin (CaM) acetylation is reduced in plasma of AD patients and mice. CaM acetylation and its target Ca2+ /CaM-dependent kinase II α (CaMKIIα) activity were severely impaired in AD mouse brain. The stoichiometry showed that Ac-K22, K95-CaM acetylation were decreased in AD patients and mice. Moreover, we screened and identified that lysine deacetylase 9 (HDAC9) was the main deacetylase for CaM. In addition, HDAC9 inhibition increased CaM acetylation and CaMKIIα activity, and hippocampus-dependent memory in AD mice. CONCLUSIONS HDAC9-mediated CaM deacetylation induces memory impairment in AD, HDAC9, or CaM acetylation may become potential therapeutic targets for AD.
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Affiliation(s)
- Hai‐Long Zhang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases, Institute of NeuroscienceSuzhou Medical College of Soochow University, Medical Center of Soochow UniversitySuzhouChina
| | - Shufen Hu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases, Institute of NeuroscienceSuzhou Medical College of Soochow University, Medical Center of Soochow UniversitySuzhouChina
| | - Pin Yang
- Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life ScienceEast China Normal UniversityShanghaiChina
| | - Han‐Chun Long
- Department of NeurologyThe Affiliated Xingyi City Hospital of Guizhou Medical UniversityXingyiChina
| | - Quan‐Hong Ma
- Jiangsu Key Laboratory of Neuropsychiatric Diseases, Institute of NeuroscienceSuzhou Medical College of Soochow University, Medical Center of Soochow UniversitySuzhouChina
| | - Dong‐Min Yin
- Key Laboratory of Brain Functional Genomics, Ministry of Education and Shanghai, School of Life ScienceEast China Normal UniversityShanghaiChina
| | - Guang‐Yin Xu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases, Institute of NeuroscienceSuzhou Medical College of Soochow University, Medical Center of Soochow UniversitySuzhouChina
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Genetic Mapping of Behavioral Traits Using the Collaborative Cross Resource. Int J Mol Sci 2022; 24:ijms24010682. [PMID: 36614124 PMCID: PMC9821145 DOI: 10.3390/ijms24010682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 12/14/2022] [Accepted: 12/23/2022] [Indexed: 01/03/2023] Open
Abstract
The complicated interactions between genetic background, environment and lifestyle factors make it difficult to study the genetic basis of complex phenotypes, such as cognition and anxiety levels, in humans. However, environmental and other factors can be tightly controlled in mouse studies. The Collaborative Cross (CC) is a mouse genetic reference population whose common genetic and phenotypic diversity is on par with that of humans. Therefore, we leveraged the power of the CC to assess 52 behavioral measures associated with locomotor activity, anxiety level, learning and memory. This is the first application of the CC in novel object recognition tests, Morris water maze tasks, and fear conditioning tests. We found substantial continuous behavioral variations across the CC strains tested, and mapped six quantitative trait loci (QTLs) which influenced these traits, defining candidate genetic variants underlying these QTLs. Overall, our findings highlight the potential of the CC population in behavioral genetic research, while the identified genomic loci and genes driving the variation of relevant behavioral traits provide a foundation for further studies.
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Mi S, Chen H, Lin P, Kang P, Qiao D, Zhang B, Wang Z, Zhang J, Hu X, Wang C, Cui H, Li S. CaMKII is a modulator in neurodegenerative diseases and mediates the effect of androgen on synaptic protein PSD95. Front Genet 2022; 13:959360. [PMID: 35991539 PMCID: PMC9386121 DOI: 10.3389/fgene.2022.959360] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 06/29/2022] [Indexed: 11/29/2022] Open
Abstract
Androgens rapidly regulate synaptic plasticity in hippocampal neurones, but the underlying mechanisms remain unclear. In this study, we carried out a comprehensive bioinformatics analysis of functional similarities between androgen receptor (AR) and the synaptic protein postsynaptic density 95 (PSD95) to evaluate the effect. Using different measurements and thresholds, we obtained consistent results illustrating that the two proteins were significantly involved in similar pathways. We further identified CaMKII plays a critical role in mediating the rapid effect of androgen and promoting the expression of PSD95. We used mouse hippocampal neurone HT22 cells as a cell model to investigate the effect of testosterone (T) on intracellular Ca2+ levels and the mechanism. Calcium imaging experiments showed that intracellular Ca2+ increased to a peak due to calcium influx in the extracellular fluid through L-type and N-type voltage-gated calcium channels when HT22 cells were treated with 100 nM T for 20 min. Subsequently, we investigated whether the Ca2+/CaMKII signaling pathway mediates the rapid effect of T, promoting the expression of the synaptic protein PSD95. Immunofluorescence cytochemical staining and western blotting results showed that T promoted CaMKII phosphorylation by rapidly increasing extracellular Ca2+ influx, thus increasing PSD95 expression. This study demonstrated that CaMKII acts as a mediator assisting androgen which regulates the synaptic protein PSD95Also, it provides evidence for the neuroprotective mechanisms of androgens in synaptic plasticity and reveals the gated and pharmacological mechanisms of the voltage-gated Ca2+ channel family for androgen replacement therapy.
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Affiliation(s)
- Shixiong Mi
- Department of Anatomy, Hebei Medical University, Shijiazhuang, China
- Neuroscience Research Center, Hebei Medical University, Shijiazhuang, China
- Hebei Key Laboratory of Neurodegenerative Disease Mechanism, Shijiazhuang, China
| | - Huan Chen
- Department of Anatomy, Hebei Medical University, Shijiazhuang, China
- Neuroscience Research Center, Hebei Medical University, Shijiazhuang, China
| | - Peijing Lin
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China
| | - Peiyuan Kang
- Clinical Medicine, Hebei Medical University, Shijiazhuang, China
| | - Dan Qiao
- Department of Anatomy, Hebei Medical University, Shijiazhuang, China
- Neuroscience Research Center, Hebei Medical University, Shijiazhuang, China
| | - Bohan Zhang
- Department of Anatomy, Hebei Medical University, Shijiazhuang, China
- Neuroscience Research Center, Hebei Medical University, Shijiazhuang, China
| | - Zhao Wang
- Department of Anatomy, Hebei Medical University, Shijiazhuang, China
- Neuroscience Research Center, Hebei Medical University, Shijiazhuang, China
| | - Jingbao Zhang
- Basic Medicine, Hebei Medical University, Shijiazhuang, China
| | - Xiangting Hu
- Basic Medicine, Hebei Medical University, Shijiazhuang, China
| | - Chang Wang
- Department of Anatomy, Hebei Medical University, Shijiazhuang, China
- Neuroscience Research Center, Hebei Medical University, Shijiazhuang, China
- Hebei Key Laboratory of Neurodegenerative Disease Mechanism, Shijiazhuang, China
| | - Huixian Cui
- Department of Anatomy, Hebei Medical University, Shijiazhuang, China
- Neuroscience Research Center, Hebei Medical University, Shijiazhuang, China
- Hebei Key Laboratory of Neurodegenerative Disease Mechanism, Shijiazhuang, China
- *Correspondence: Sha Li, ; Huixian Cui,
| | - Sha Li
- Department of Anatomy, Hebei Medical University, Shijiazhuang, China
- Neuroscience Research Center, Hebei Medical University, Shijiazhuang, China
- Hebei Key Laboratory of Neurodegenerative Disease Mechanism, Shijiazhuang, China
- The Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang, China
- *Correspondence: Sha Li, ; Huixian Cui,
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