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Pan J, Zhao Y, Sang R, Yang R, Bao J, Wu Y, Fei Y, Wu J, Chen G. Huntington-associated protein 1 inhibition contributes to neuropathic pain by suppressing Cav1.2 activity and attenuating inflammation. Pain 2023; 164:e286-e302. [PMID: 36508175 DOI: 10.1097/j.pain.0000000000002837] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 11/21/2022] [Indexed: 12/14/2022]
Abstract
ABSTRACT Although pain dysfunction is increasingly observed in Huntington disease, the underlying mechanisms still unknown. As a crucial Huntington-associated protein, Huntington-associated protein 1 (HAP1) is enriched in normal spinal dorsal horn and dorsal root ganglia (DRG) which are regarded as "primary sensory center," indicating its potential functions in pain process. Here, we discovered that HAP1 level was greatly increased in the dorsal horn and DRG under acute and chronic pain conditions. Lack of HAP1 obviously suppressed mechanical allodynia and hyperalgesia in spared nerve injury (SNI)-induced and chronic constriction injury-induced pain. Its deficiency also greatly inhibited the excitability of nociceptive neurons. Interestingly, we found that suppressing HAP1 level diminished the membrane expression of the L-type calcium channel (Cav1.2), which can regulate Ca 2+ influx and then influence brain-derived neurotrophic factor (BDNF) synthesis and release. Furthermore, SNI-induced activation of astrocytes and microglia notably decreased in HAP1-deficient mice. These results indicate that HAP1 deficiency might attenuate pain responses. Collectively, our results suggest that HAP1 in dorsal horn and DRG neurons regulates Cav1.2 surface expression, which in turn reduces neuronal excitability, BDNF secretion, and inflammatory responses and ultimately influences neuropathic pain progression.
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Affiliation(s)
- JingYing Pan
- Department of Histology and Embryology, Medical School of Nantong University, Nantong, China
| | - YaYu Zhao
- Key Laboratory of Neuroregeneration of Jiangsu and the Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Rui Sang
- Department of Physiology, Medical School of Nantong University, Nantong, China
| | - RiYun Yang
- Department of Histology and Embryology, Medical School of Nantong University, Nantong, China
| | - JingYin Bao
- Center for Basic Medical Research, Medical School of Nantong University, Nantong, China
| | - YongJiang Wu
- Center for Basic Medical Research, Medical School of Nantong University, Nantong, China
| | - Ying Fei
- Key Laboratory of Neuroregeneration of Jiangsu and the Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
| | - Jian Wu
- Department of Histology and Embryology, Medical School of Nantong University, Nantong, China
| | - Gang Chen
- Key Laboratory of Neuroregeneration of Jiangsu and the Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
- Center for Basic Medical Research, Medical School of Nantong University, Nantong, China
- Department of Anesthesiology, Affiliated Hospital of Nantong University, Nantong, China
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Chen X, He E, Su C, Zeng Y, Xu J. Huntingtin-associated protein 1-associated intracellular trafficking in neurodegenerative diseases. Front Aging Neurosci 2023; 15:1100395. [PMID: 36824265 PMCID: PMC9941194 DOI: 10.3389/fnagi.2023.1100395] [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: 11/16/2022] [Accepted: 01/18/2023] [Indexed: 02/10/2023] Open
Abstract
Huntingtin-associated protein 1 (HAP1), the first identified HTT-binding partner, is highly expressed in the central nervous system, and has been found to associated with neurological diseases. Mounting evidence suggests that HAP1 functions as a component of cargo-motor molecules to bind various proteins and participates in intracellular trafficking. It is known that the failure of intracellular transport is a key contributor to the progression of neurodegenerative disorders (NDs) including Alzheimer's disease (AD), Huntington's disease (HD), Parkinson's disease (PD), amyotrophic lateral sclerosis (ALS), spinal and bulbar muscular atrophy (SBMA) and spinocerebellar ataxia (SCA). The link between HAP1 and various NDs is supported by growing evidence. This review aims to provide a comprehensive overview of the intracellular trafficking function of HAP1 and its involvement in NDs.
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Affiliation(s)
- Xingxing Chen
- Brain Science and Advanced Technology Institute, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Wuhan University of Science and Technology, Wuhan, Hubei, China,Geriatric Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, Hubei, China,*Correspondence: Xingxing Chen, ✉
| | - Enhao He
- Brain Science and Advanced Technology Institute, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Wuhan University of Science and Technology, Wuhan, Hubei, China
| | - Chonglin Su
- Brain Science and Advanced Technology Institute, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Wuhan University of Science and Technology, Wuhan, Hubei, China
| | - Yan Zeng
- Brain Science and Advanced Technology Institute, Hubei Province Key Laboratory of Occupational Hazard Identification and Control, School of Medicine, Wuhan University of Science and Technology, Wuhan, Hubei, China,Geriatric Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, Hubei, China
| | - Jiang Xu
- Hubei Key Laboratory of Nerve Injury and Functional Reconstruction, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China,Jiang Xu, ✉
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Li B, Qin S, Cai Y, Zheng K, Wang B, Li R, Huang H, Zeng M, Xiao F, Xu X. Proteomic characteristics of PM 2.5 -induced differentially expressed proteins in human renal tubular epithelial cells. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2021; 86:103658. [PMID: 33862201 DOI: 10.1016/j.etap.2021.103658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 03/26/2021] [Accepted: 04/09/2021] [Indexed: 06/12/2023]
Abstract
Human renal epithelial (HK-2) cells were treated with PM2.5 (50 μg/mL) from Shenzhen and Taiyuan, proteomics and bioinformatics were used to screen the differentially expressed proteins (DEPs). A total of 577 DEPs were screened after HK-2 cells exposed to Shenzhen PM2.5, of which 426 were up-regulated and 151 were down-regulated. A total of 1250 DEPs were screened in HK-2 cells after exposure to Taiyuan PM2.5, of which 488 were up-regulated and 185 were down-regulated. The top 10 proteins with the highest number of nodes were screened using the interaction network map of DEPs. HK-2 cells exposed to Shenzhen PM2.5 contained CYR61, CTGF, and THBS1 proteins, while HK-2 cells exposed to Taiyuan PM2.5 contained ALB, FN1, and CYR61 proteins. Additionally, PM2.5 components were detected, PM2.5 samples from Shenzhen and Taiyuan induced obvious changes in DEPs expression, the difference in DEPs between the two cities was probably associated with the different PM2.5 components.
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Affiliation(s)
- Boru Li
- Department of Health Toxicology, Xiangya School of Public Health, Central South University, Changsha, Hunan, 410078, China; Institute of Environment and Health, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong, 518055, China
| | - Shuangjian Qin
- Department of Health Toxicology, Xiangya School of Public Health, Central South University, Changsha, Hunan, 410078, China; Institute of Environment and Health, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong, 518055, China
| | - Ying Cai
- Institute of Environment and Health, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong, 518055, China; School of Public Health, University of South China, Hengyang, Hunan, 421001, China
| | - Kai Zheng
- Institute of Environment and Health, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong, 518055, China; School of Public Health, University of South China, Hengyang, Hunan, 421001, China
| | - Bingyu Wang
- Institute of Environment and Health, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong, 518055, China; School of Public Health, University of South China, Hengyang, Hunan, 421001, China
| | - Runbing Li
- Institute of Environment and Health, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong, 518055, China; School of Public Health, University of South China, Hengyang, Hunan, 421001, China
| | - Haiyan Huang
- Institute of Environment and Health, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong, 518055, China
| | - Ming Zeng
- Department of Health Toxicology, Xiangya School of Public Health, Central South University, Changsha, Hunan, 410078, China.
| | - Fang Xiao
- Department of Health Toxicology, Xiangya School of Public Health, Central South University, Changsha, Hunan, 410078, China.
| | - Xinyun Xu
- Institute of Environment and Health, Shenzhen Center for Disease Control and Prevention, Shenzhen, Guangdong, 518055, China.
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Chronic lead exposure alters photic entrainment of locomotor activity rhythm and neuronal photoactivation in the suprachiasmatic nucleus of the adult rat. J Chem Neuroanat 2021; 117:101991. [PMID: 34182089 DOI: 10.1016/j.jchemneu.2021.101991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 06/06/2021] [Accepted: 06/14/2021] [Indexed: 11/21/2022]
Abstract
Chronic lead (Pb) exposure affects the circadian physiological processes regulated by suprachiasmatic nucleus (SCN), which is synchronized (entrainment) by light. Disorders in the entrainment capacity of an organism alter its performance to interact with the environment, thus affecting its health status. The objectives of the present study were to evaluate whether chronic early Pb exposure affects the entrainment of the circadian rhythm of locomotor activity by light and to explore the possible mechanisms involved. Adult male Wistar rats, control and chronically exposed to Pb (320 ppm) in drinking water from gestation to adult age, were used. Assessment of the metal level showed a significant increase of Pb in the blood, hypothalamus and prefrontal cortex of the experimental rats. Continuous registrations of locomotor activity (12 h:12 h light-dark cycle) depicted that Pb induces important delay of this activity when the light was turned off. The Pb exposed animals entrained faster with a photoperiod delay of 6 h, (lights on at 13:00 h), and maintained the significant delay in the onset of activity at lights out. In continuous darkness, the animals were exposed to a light pulse at circadian time 23. This resulted in a significant decrease of photo-stimulated neurons (immunoreactivity to c-Fos) in the SCN of the metal-exposed animals. These results show that chronic early Pb exposure alters the photic entrainment of the rhythm of locomotor activity, which is evidenced by a significant decrease in both the number of photo-stimulated neurons and neuronal population (Nissl stain) of the SCN.
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Zhu G, Zhu Q, Zhang W, Hui C, Li Y, Yang M, Pang S, Li Y, Xue G, Chen H. Mitochondrial uncoupling protein 2 is regulated through heterogeneous nuclear ribonucleoprotein K in lead exposure models. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART C, TOXICOLOGY AND CARCINOGENESIS 2021; 39:1-16. [PMID: 33576715 DOI: 10.1080/26896583.2020.1854596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Synaptic plasticity plays an important role in learning and memory in the developing hippocampus. However, the precise molecular mechanism in lead exposure models remains to be studied. UCP2, an inner mitochondrial anion carrier, regulates synaptic plasticity through uncoupling neurons. And hnRNP K, an RNA binding protein, plays a role in modulating the expression of transcripts coding synaptic plasticity. We aim to investigate whether lead exposure affects UCP2 and hnRNP K expression levels. The Sprague-Dawley rats were exposed to different lead acetate concentrations (0 g/l, 0.5 g/l, 2.0 g/l) during gestational and lactational periods. PC12 cells were also exposed to different lead acetate concentrations (0 μM, 1 μM and 100 μM). We found that the expression levels of UCP2 and hnRNP K had significant declines in the lead exposure rat hippocampus and PC12 cells. Furthermore, the up-regulation of hnRNP K expression level could reverse the expression level of UCP2 in lead exposure models. In conclusion, these results suggest that lead exposure can reduce the expression level of UCP2 which is mediated by decreasing the expression level of hnRNP K.
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Affiliation(s)
- Gaochun Zhu
- Department of Anatomy, School of Medicine, Nanchang University, Nanchang, P.R. China
| | - Qian Zhu
- Department of Anatomy, School of Medicine, Nanchang University, Nanchang, P.R. China
| | - Wei Zhang
- Department of Anatomy, School of Medicine, Nanchang University, Nanchang, P.R. China
| | - Chen Hui
- Department of Anatomy, School of Medicine, Nanchang University, Nanchang, P.R. China
| | - Yuwen Li
- Queen Mary College, School of Medicine, Nanchang University, Nanchang, P.R. China
| | - Meiyuan Yang
- Department of Anatomy, School of Medicine, Nanchang University, Nanchang, P.R. China
| | - Shimin Pang
- Second Clinical College, School of Medicine, Nanchang University, Nanchang, P.R. China
| | - Yaobing Li
- Department of Anatomy, School of Medicine, Nanchang University, Nanchang, P.R. China
| | - Guoyong Xue
- Department of Anatomy, School of Medicine, Nanchang University, Nanchang, P.R. China
| | - Hongping Chen
- Department of Histology and Embryology, School of Medicine, Nanchang University, Nanchang, P.R. China
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