1
|
Li J, Sun J, Xu M, Yang L, Yang N, Deng J, Ma Y, Qi Y, Liu Z, Ruan Q, Liu Y, Huang Y. Human cytomegalovirus infection impairs neural differentiation via repressing sterol regulatory element binding protein 2-mediated cholesterol biosynthesis. Cell Mol Life Sci 2024; 81:289. [PMID: 38970696 DOI: 10.1007/s00018-024-05278-0] [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: 08/21/2023] [Revised: 05/11/2024] [Accepted: 05/13/2024] [Indexed: 07/08/2024]
Abstract
Congenital human cytomegalovirus (HCMV) infection is a major cause of abnormalities and disorders in the central nervous system (CNS) and/or the peripheral nervous system (PNS). However, the complete pathogenesis of neural differentiation disorders caused by HCMV infection remains to be fully elucidated. Stem cells from human exfoliated deciduous teeth (SHEDs) are mesenchymal stem cells (MSCs) with a high proliferation and neurogenic differentiation capacity. Since SHEDs originate from the neural crest of the early embryonic ectoderm, SHEDs were hypothesized to serve as a promising cell line for investigating the pathogenesis of neural differentiation disorders in the PNS caused by congenital HCMV infection. In this work, SHEDs were demonstrated to be fully permissive to HCMV infection and the virus was able to complete its life cycle in SHEDs. Under neurogenic inductive conditions, HCMV infection of SHEDs caused an abnormal neural morphology. The expression of stem/neural cell markers was also disturbed by HCMV infection. The impairment of neural differentiation was mainly due to a reduction of intracellular cholesterol levels caused by HCMV infection. Sterol regulatory element binding protein-2 (SREBP2) is a critical transcription regulator that guides cholesterol synthesis. HCMV infection was shown to hinder the migration of SREBP2 into nucleus and resulted in perinuclear aggregations of SREBP2 during neural differentiation. Our findings provide new insights into the prevention and treatment of nervous system diseases caused by congenital HCMV infection.
Collapse
Affiliation(s)
- Jianming Li
- Virology Laboratory, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Jingxuan Sun
- Virology Laboratory, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Mingyi Xu
- Virology Laboratory, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Lei Yang
- Department of Pediatric Dentistry, School and Hospital of Stomatology, China Medical University, Shenyang, Liaoning, China
- Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, Liaoning, China
| | - Ning Yang
- Department of Pediatric Dentistry, School and Hospital of Stomatology, China Medical University, Shenyang, Liaoning, China
- Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, Liaoning, China
| | - Jingui Deng
- Virology Laboratory, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
- Department of Microorganism Laboratory, Shenyang Center for Disease Control and Prevention, Shenyang, Liaoning, China
| | - Yanping Ma
- Virology Laboratory, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
- Departments of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Ying Qi
- Virology Laboratory, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
- Departments of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Zhongyang Liu
- Virology Laboratory, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
- Departments of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Qiang Ruan
- Virology Laboratory, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China.
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China.
- Departments of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China.
| | - Yao Liu
- Department of Pediatric Dentistry, School and Hospital of Stomatology, China Medical University, Shenyang, Liaoning, China.
- Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang, Liaoning, China.
| | - Yujing Huang
- Virology Laboratory, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China.
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China.
- Departments of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China.
| |
Collapse
|
2
|
Zhang L, Zetter MA, Hernández VS, Hernández-Pérez OR, Jáuregui-Huerta F, Krabichler Q, Grinevich V. Morphological Signatures of Neurogenesis and Neuronal Migration in Hypothalamic Vasopressinergic Magnocellular Nuclei of the Adult Rat. Int J Mol Sci 2024; 25:6988. [PMID: 39000096 PMCID: PMC11241681 DOI: 10.3390/ijms25136988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 06/17/2024] [Accepted: 06/17/2024] [Indexed: 07/16/2024] Open
Abstract
The arginine vasopressin (AVP)-magnocellular neurosecretory system (AVPMNS) in the hypothalamus plays a critical role in homeostatic regulation as well as in allostatic motivational behaviors. However, it remains unclear whether adult neurogenesis exists in the AVPMNS. By using immunoreaction against AVP, neurophysin II, glial fibrillar acidic protein (GFAP), cell division marker (Ki67), migrating neuroblast markers (doublecortin, DCX), microglial marker (Ionized calcium binding adaptor molecule 1, Iba1), and 5'-bromo-2'-deoxyuridine (BrdU), we report morphological evidence that low-rate neurogenesis and migration occur in adult AVPMNS in the rat hypothalamus. Tangential AVP/GFAP migration routes and AVP/DCX neuronal chains as well as ascending AVP axonal scaffolds were observed. Chronic water deprivation significantly increased the BrdU+ nuclei within both the supraaoptic (SON) and paraventricular (PVN) nuclei. These findings raise new questions about AVPMNS's potential hormonal role for brain physiological adaptation across the lifespan, with possible involvement in coping with homeostatic adversities.
Collapse
Affiliation(s)
- Limei Zhang
- Department of Physiology, School of Medicine, National Autonomous University of Mexico, Mexico City 04510, Mexico; (M.A.Z.); (V.S.H.); (O.R.H.-P.)
- Section on Molecular Neuroscience, National Institute of Mental Health, NIH, Bethesda, MD 20892, USA
| | - Mario A. Zetter
- Department of Physiology, School of Medicine, National Autonomous University of Mexico, Mexico City 04510, Mexico; (M.A.Z.); (V.S.H.); (O.R.H.-P.)
- Department of Medicine and Health, University of La Salle, Mexico City 14000, Mexico
| | - Vito S. Hernández
- Department of Physiology, School of Medicine, National Autonomous University of Mexico, Mexico City 04510, Mexico; (M.A.Z.); (V.S.H.); (O.R.H.-P.)
- Section on Molecular Neuroscience, National Institute of Mental Health, NIH, Bethesda, MD 20892, USA
| | - Oscar R. Hernández-Pérez
- Department of Physiology, School of Medicine, National Autonomous University of Mexico, Mexico City 04510, Mexico; (M.A.Z.); (V.S.H.); (O.R.H.-P.)
| | - Fernando Jáuregui-Huerta
- Department of Physiology, School of Medicine, National Autonomous University of Mexico, Mexico City 04510, Mexico; (M.A.Z.); (V.S.H.); (O.R.H.-P.)
| | - Quirin Krabichler
- Department of Neuropeptide Research in Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, 69120 Mannheim, Germany; (Q.K.); (V.G.)
| | - Valery Grinevich
- Department of Neuropeptide Research in Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim, University of Heidelberg, 69120 Mannheim, Germany; (Q.K.); (V.G.)
| |
Collapse
|
3
|
Lee S, Cai WT, Yoon HS, Kim JH. Visualization of the existence of growth hormone secretagogue receptor in the rat nucleus accumbens. Mol Brain 2024; 17:37. [PMID: 38872222 PMCID: PMC11177452 DOI: 10.1186/s13041-024-01109-2] [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: 05/09/2024] [Accepted: 06/04/2024] [Indexed: 06/15/2024] Open
Abstract
The potential role of the ghrelin receptor, also known as the growth hormone secretagogue receptor (GHSR), within the nucleus accumbens (NAcc) in regulating drug addiction and feeding has been documented; however, the pattern of its expression in this site remains elusive. In this study, we characterized the expression patterns of GHSR1a and 1b, two subtypes of GHSRs, within the NAcc of the rat brain by immunohistochemistry. We visually detected GHSR signals, for the first time, at the protein level in the NAcc in which they were mostly expressed in neurons including both medium spiny neurons (MSNs) and non-MSNs. Furthermore, GHSR1a was found expressed as localized near the cellular membrane or some in the cytoplasm, whereas GHSR1b expressed solely throughout the large cytoplasmic area. The existence and subcellular expression pattern of GHSRs in the NAcc identified in this study will contribute to improving our understanding about the role of GHSR-mediated neurosignaling in feeding and drug addiction.
Collapse
Affiliation(s)
- Seohyeon Lee
- Department of Medical Sciences, Yonsei University College of Medicine, Seoul, 03722, South Korea
| | - Wen Ting Cai
- Department of Physiology, Yonsei University College of Medicine, Seoul, 03722, South Korea
| | - Hyung Shin Yoon
- Department of Physiology, Yonsei University College of Medicine, Seoul, 03722, South Korea.
| | - Jeong-Hoon Kim
- Department of Medical Sciences, Yonsei University College of Medicine, Seoul, 03722, South Korea.
- Department of Physiology, Yonsei University College of Medicine, Seoul, 03722, South Korea.
| |
Collapse
|
4
|
Ma Y, Guo S, Chen Y, Peng Y, Su X, Jiang H, Lin X, Zhang J. Single-nucleus chromatin landscape dataset of mouse brain development and aging. Sci Data 2024; 11:616. [PMID: 38866804 PMCID: PMC11169343 DOI: 10.1038/s41597-024-03382-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Accepted: 05/15/2024] [Indexed: 06/14/2024] Open
Abstract
The development and aging of the brain constitute a lifelong dynamic process, marked by structural and functional changes that entail highly coordinated cellular differentiation and epigenetic regulatory mechanisms. Chromatin accessibility serves as the foundational basis for genetic activity. However, the holistic and dynamic chromatin landscape that spans various brain regions throughout development and ageing remains predominantly unexplored. In this study, we employed single-nucleus ATAC-seq to generate comprehensive chromatin accessibility maps, incorporating data from 69,178 cells obtained from four distinct brain regions - namely, the olfactory bulb (OB), cerebellum (CB), prefrontal cortex (PFC), and hippocampus (HP) - across key developmental time points at 7 P, 3 M, 12 M, and 18 M. We delineated the distribution of cell types across different age stages and brain regions, providing insight into chromatin accessible regions and key transcription factors specific to different cell types. Our data contribute to understanding the epigenetic basis of the formation of different brain regions, providing a dynamic landscape and comprehensive resource for revealing gene regulatory programs during brain development and aging.
Collapse
Affiliation(s)
- Yuting Ma
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
- Hebei Industrial Technology Research Institute of Genomics in Maternal & Child Health, Clin Lab, BGI Genomics, Shijiazhuang, 050035, China
- BGI Genomics, Shenzhen, 518083, China
| | - Sicheng Guo
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
- Hebei Industrial Technology Research Institute of Genomics in Maternal & Child Health, Clin Lab, BGI Genomics, Shijiazhuang, 050035, China
- BGI Genomics, Shenzhen, 518083, China
| | - Yixi Chen
- BGI Research, Shenzhen, 518083, China
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, China
| | | | - Xi Su
- Hebei Industrial Technology Research Institute of Genomics in Maternal & Child Health, Clin Lab, BGI Genomics, Shijiazhuang, 050035, China
- BGI Genomics, Shenzhen, 518083, China
| | - Hui Jiang
- BGI Genomics, Shenzhen, 518083, China
| | - Xiumei Lin
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China.
- BGI Research, Shenzhen, 518083, China.
| | - Jianguo Zhang
- Hebei Industrial Technology Research Institute of Genomics in Maternal & Child Health, Clin Lab, BGI Genomics, Shijiazhuang, 050035, China.
- BGI Genomics, Shenzhen, 518083, China.
- BGI Research, Shenzhen, 518083, China.
- School of Public Health, Hebei Medical University, Shijiazhuang, 050017, China.
| |
Collapse
|
5
|
Liu X, Chen J, Du Y, Tian Q, Wang L, Li W, Liu G, Tan Q, Wang J, Deng X. The changes of neurogenesis in the hippocampal dentate gyrus of SAMP8 mice and the effects of acupuncture and moxibustion. Brain Res 2024; 1831:148814. [PMID: 38395250 DOI: 10.1016/j.brainres.2024.148814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 02/15/2024] [Accepted: 02/18/2024] [Indexed: 02/25/2024]
Abstract
BACKGROUND Influenced by the global aging population, the incidence of Alzheimer's disease (AD) has increased sharply. In addition to increasing β-amyloid plaque deposition and tau tangle formation, neurogenesis dysfunction has recently been observed in AD. Therefore, promoting regeneration to improve neurogenesis and cognitive dysfunction can play an effective role in AD treatment. Acupuncture and moxibustion have been widely used in the clinical treatment of neurodegenerative diseases because of their outstanding advantages such as early, functional, and benign two-way adjustment. It is urgent to clarify the effectiveness, greenness, and safety of acupuncture and moxibustion in promoting neurogenesis in AD treatment. METHODS Senescence-accelerated mouse prone 8 (SAMP8) mice at various ages were used as experimental models to simulate the pathology and behaviors of AD mice. Behavioral experiments, immunohistochemistry, Western blot, and immunofluorescence experiments were used for comparison between different groups. RESULTS Acupuncture and moxibustion could increase the number of PCNA+ DCX+ cells, Nissl bodies, and mature neurons in the hippocampal Dentate gyrus (DG) of SAMP8 mice, restore the hippocampal neurogenesis, delay the AD-related pathological presentation, and improve the learning and memory abilities of SAMP8 mice. CONCLUSION The pathological process underlying AD and cognitive impairment were changed positively by improving the dysfunction of neurogenesis. This indicates the promising role of acupuncture and moxibustion in the prevention and treatment of AD.
Collapse
Affiliation(s)
- Xinyuan Liu
- College of Acupuncture-Moxibustion and Orthopaedics, Hubei University of Chinese Medicine, Wuhan, Hubei 430061, China
| | - Jiangmin Chen
- College of Acupuncture-Moxibustion and Orthopaedics, Hubei University of Chinese Medicine, Wuhan, Hubei 430061, China
| | - Yanjun Du
- College of Acupuncture-Moxibustion and Orthopaedics, Hubei University of Chinese Medicine, Wuhan, Hubei 430061, China; Hubei Shizhen Laboratory, China; Hubei International Science and Technology Cooperation Base of Preventive Treatment by Acupuncture and Moxibustion, China.
| | - Qing Tian
- The Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Li Wang
- College of Acupuncture-Moxibustion and Orthopaedics, Hubei University of Chinese Medicine, Wuhan, Hubei 430061, China
| | - Weixian Li
- College of Acupuncture-Moxibustion and Orthopaedics, Hubei University of Chinese Medicine, Wuhan, Hubei 430061, China
| | - Guangya Liu
- College of Acupuncture-Moxibustion and Orthopaedics, Hubei University of Chinese Medicine, Wuhan, Hubei 430061, China
| | - Qian Tan
- College of Acupuncture-Moxibustion and Orthopaedics, Hubei University of Chinese Medicine, Wuhan, Hubei 430061, China
| | - Jingzhi Wang
- College of Acupuncture-Moxibustion and Orthopaedics, Hubei University of Chinese Medicine, Wuhan, Hubei 430061, China
| | - Xiaoni Deng
- Wuhan University of Bioengineering, Wuhan, Hubei 430030, China
| |
Collapse
|
6
|
Lukomska A, Frost MP, Theune WC, Xing J, Gupta M, Trakhtenberg EF. Nfe2l3 promotes neuroprotection and long-distance axon regeneration after injury in vivo. Exp Neurol 2024; 375:114741. [PMID: 38395216 PMCID: PMC10981571 DOI: 10.1016/j.expneurol.2024.114741] [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: 11/11/2023] [Revised: 01/22/2024] [Accepted: 02/20/2024] [Indexed: 02/25/2024]
Abstract
Nuclear factor erythroid 2 like (Nfe2l) gene family members 1-3 mediate cellular response to oxidative stress, including in the central nervous system (CNS). However, neuronal functions of Nfe2l3 are unknown. Here, we comparatively evaluated expression of Nfe2l1, Nfe2l2, and Nfe2l3 in singe cell RNA-seq (scRNA-seq)-profiled cortical and retinal ganglion cell (RGC) CNS projection neurons, investigated whether Nfe2l3 regulates neuroprotection and axon regeneration after CNS injury in vivo, and characterized a gene network associated with Nfe2l3 in neurons. We showed that, Nfe2l3 expression transiently peaks in developing immature cortical and RGC projection neurons, but is nearly abolished in adult neurons and is not upregulated after injury. Furthermore, within the retina, Nfe2l3 is enriched in RGCs, primarily neonatally, and not upregulated in injured RGCs, whereas Nfe2l1 and Nfe2l2 are expressed robustly in other retinal cell types as well and are upregulated in injured RGCs. We also found that, expressing Nfe2l3 in injured RGCs through localized intralocular viral vector delivery promotes neuroprotection and long-distance axon regeneration after optic nerve injury in vivo. Moreover, Nfe2l3 provided a similar extent of neuroprotection and axon regeneration as viral vector-targeting of Pten and Klf9, which are prominent regulators of neuroprotection and long-distance axon regeneration. Finally, we bioinformatically characterized a gene network associated with Nfe2l3 in neurons, which predicted the association of Nfe2l3 with established mechanisms of neuroprotection and axon regeneration. Thus, Nfe2l3 is a novel neuroprotection and axon regeneration-promoting factor with a therapeutic potential for treating CNS injury and disease.
Collapse
Affiliation(s)
- Agnieszka Lukomska
- Department of Neuroscience, University of Connecticut School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA
| | - Matthew P Frost
- Department of Neuroscience, University of Connecticut School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA
| | - William C Theune
- Department of Neuroscience, University of Connecticut School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA
| | - Jian Xing
- Department of Neuroscience, University of Connecticut School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA
| | - Mahit Gupta
- Department of Neuroscience, University of Connecticut School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA
| | - Ephraim F Trakhtenberg
- Department of Neuroscience, University of Connecticut School of Medicine, 263 Farmington Ave., Farmington, CT 06030, USA.
| |
Collapse
|
7
|
Li X, Ji R, Duan L, Hao Z, Su Y, Wang H, Guan F, Ma S. MG53/GMs/HA-Dex neural scaffold promotes the functional recovery of spinal cord injury by alleviating neuroinflammation. Int J Biol Macromol 2024; 267:131520. [PMID: 38615859 DOI: 10.1016/j.ijbiomac.2024.131520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 03/25/2024] [Accepted: 04/09/2024] [Indexed: 04/16/2024]
Abstract
The adverse microenvironment, including neuroinflammation, hinders the recovery of spinal cord injury (SCI). Regulating microglial polarization to alleviate neuroinflammation at the injury site is an effective strategy for SCI recovery. MG53 protein exerts obvious repair ability on multiple tissues damage, but with short half-life. In this study, we composited an innovative MG53/GMs/HA-Dex neural scaffold using gelatin microspheres (GMs), hyaluronic acid (HA), and dextran (Dex) loaded with MG53 protein. This novel neural scaffold could respond to MMP-2/9 protein and stably release MG53 protein with good physicochemical properties and biocompatibility. In addition, it significantly improved the motor function of SCI mice, suppressed M1 polarization of microglia and neuroinflammation, and promoted neurogenesis and axon regeneration. Further mechanistic experiments demonstrated that MG53/GMs/HA-Dex hydrogel inhibited the JAK2/STAT3 signaling pathway. Thus, this MG53/GMs/HA-Dex neural scaffold promotes the functional recovery of SCI mice by alleviating neuroinflammation, which provides a new intervention strategy for the neural regeneration and functional repair of SCI.
Collapse
Affiliation(s)
- Xingfan Li
- School of Life Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Rong Ji
- School of Life Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Linyan Duan
- School of Life Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Zhizhong Hao
- School of Life Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Yujing Su
- School of Life Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Hao Wang
- School of Life Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China
| | - Fangxia Guan
- School of Life Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China.
| | - Shanshan Ma
- School of Life Sciences, Zhengzhou University, Zhengzhou 450001, Henan, China.
| |
Collapse
|
8
|
Sapio MR, Staedtler ES, King DM, Maric D, Jahanipour J, Ghetti A, Jacobson KA, Mannes AJ, Iadarola MJ. Analgesic candidate adenosine A3 receptors are expressed by perineuronal peripheral macrophages in human dorsal root ganglion and spinal cord microglia. Pain 2024:00006396-990000000-00583. [PMID: 38691673 DOI: 10.1097/j.pain.0000000000003242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 02/22/2024] [Indexed: 05/03/2024]
Abstract
ABSTRACT Adenosine receptors are a family of purinergic G protein-coupled receptors that are widely distributed in bodily organs and in the peripheral and central nervous systems. Recently, antihyperalgesic actions have been suggested for the adenosine A3 receptor, and its agonists have been proposed as new neuropathic pain treatments. We hypothesized that these receptors may be expressed in nociceptive primary afferent neurons. However, RNA sequencing across species, eg, rat, mouse, dog, and human, suggests that dorsal root ganglion (DRG) expression of ADORA3 is inconsistent. In rat and mouse, Adora3 shows very weak to no expression in DRG, whereas it is well expressed in human DRG. However, the cell types in human DRG that express ADORA3 have not been delineated. An examination of DRG cell types using in situ hybridization clearly detected ADORA3 transcripts in peripheral macrophages that are in close apposition to the neuronal perikarya but not in peripheral sensory neurons. By contrast, ADORA1 was found primarily in neurons, where it is broadly expressed at low levels. These results suggest that a more complex or indirect mechanism involving modulation of macrophage and/or microglial cells may underlie the potential analgesic action of adenosine A3 receptor agonism.
Collapse
Affiliation(s)
- Matthew R Sapio
- Department of Perioperative Medicine, Clinical Center, National Institutes of Health, Bethesda, MD, United States
| | - Ellen S Staedtler
- Department of Perioperative Medicine, Clinical Center, National Institutes of Health, Bethesda, MD, United States
| | - Diana M King
- Department of Perioperative Medicine, Clinical Center, National Institutes of Health, Bethesda, MD, United States
| | - Dragan Maric
- National Institute of Neurological Disorders and Stroke, Flow and Imaging Cytometry Core Facility, Bethesda, MD, United States
| | - Jahandar Jahanipour
- National Institute of Neurological Disorders and Stroke, Flow and Imaging Cytometry Core Facility, Bethesda, MD, United States
| | - Andre Ghetti
- AnaBios Corporation, San Diego, CA, United States
| | - Kenneth A Jacobson
- National Institute of Diabetes and Digestive and Kidney Diseases, Molecular Recognition Section, Laboratory of Bioorganic Chemistry, Bethesda, MD, United States
| | - Andrew J Mannes
- Department of Perioperative Medicine, Clinical Center, National Institutes of Health, Bethesda, MD, United States
| | - Michael J Iadarola
- Department of Perioperative Medicine, Clinical Center, National Institutes of Health, Bethesda, MD, United States
| |
Collapse
|
9
|
Akter M, Cui H, Hosain MA, Liu J, Duan Y, Ding B. RANBP17 Overexpression Restores Nucleocytoplasmic Transport and Ameliorates Neurodevelopment in Induced DYT1 Dystonia Motor Neurons. J Neurosci 2024; 44:e1728232024. [PMID: 38438257 PMCID: PMC11007476 DOI: 10.1523/jneurosci.1728-23.2024] [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: 09/11/2023] [Revised: 02/18/2024] [Accepted: 02/20/2024] [Indexed: 03/06/2024] Open
Abstract
DYT1 dystonia is a debilitating neurological movement disorder, and it represents the most frequent and severe form of hereditary primary dystonia. There is currently no cure for this disease due to its unclear pathogenesis. In our previous study utilizing patient-specific motor neurons (MNs), we identified distinct cellular deficits associated with the disease, including a deformed nucleus, disrupted neurodevelopment, and compromised nucleocytoplasmic transport (NCT) functions. However, the precise molecular mechanisms underlying these cellular impairments have remained elusive. In this study, we revealed the genome-wide changes in gene expression in DYT1 MNs through transcriptomic analysis. We found that those dysregulated genes are intricately involved in neurodevelopment and various biological processes. Interestingly, we identified that the expression level of RANBP17, a RAN-binding protein crucial for NCT regulation, exhibited a significant reduction in DYT1 MNs. By manipulating RANBP17 expression, we further demonstrated that RANBP17 plays an important role in facilitating the nuclear transport of both protein and transcript cargos in induced human neurons. Excitingly, the overexpression of RANBP17 emerged as a substantial mitigating factor, effectively restoring impaired NCT activity and rescuing neurodevelopmental deficits observed in DYT1 MNs. These findings shed light on the intricate molecular underpinnings of impaired NCT in DYT1 neurons and provide novel insights into the pathophysiology of DYT1 dystonia, potentially leading to the development of innovative treatment strategies.
Collapse
Affiliation(s)
- Masuma Akter
- Department of Biochemistry and Molecular Biology, Louisiana State University Health Sciences Center at Shreveport, Shreveport, Louisiana 71130-3932
| | - Haochen Cui
- Department of Biochemistry and Molecular Biology, Louisiana State University Health Sciences Center at Shreveport, Shreveport, Louisiana 71130-3932
| | - Md Abir Hosain
- Department of Biochemistry and Molecular Biology, Louisiana State University Health Sciences Center at Shreveport, Shreveport, Louisiana 71130-3932
| | - Jinmei Liu
- Department of Biochemistry and Molecular Biology, Louisiana State University Health Sciences Center at Shreveport, Shreveport, Louisiana 71130-3932
| | - Yuntian Duan
- Department of Biochemistry and Molecular Biology, Louisiana State University Health Sciences Center at Shreveport, Shreveport, Louisiana 71130-3932
| | - Baojin Ding
- Department of Biochemistry and Molecular Biology, Louisiana State University Health Sciences Center at Shreveport, Shreveport, Louisiana 71130-3932
| |
Collapse
|
10
|
Ohm DT, Xie SX, Capp N, Arezoumandan S, Cousins KAQ, Rascovsky K, Wolk DA, Van Deerlin VM, Lee EB, McMillan CT, Irwin DJ. Cytoarchitectonic gradients of laminar degeneration in behavioral variant frontotemporal dementia. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.05.588259. [PMID: 38644997 PMCID: PMC11030243 DOI: 10.1101/2024.04.05.588259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
Behavioral variant frontotemporal dementia (bvFTD) is a clinical syndrome primarily caused by either tau (bvFTD-tau) or TDP-43 (bvFTD-TDP) proteinopathies. We previously found lower cortical layers and dorsolateral regions accumulate greater tau than TDP-43 pathology; however, patterns of laminar neurodegeneration across diverse cytoarchitecture in bvFTD is understudied. We hypothesized that bvFTD-tau and bvFTD-TDP have distinct laminar distributions of pyramidal neurodegeneration along cortical gradients, a topologic order of cytoarchitectonic subregions based on increasing pyramidal density and laminar differentiation. Here, we tested this hypothesis in a frontal cortical gradient consisting of five cytoarchitectonic types (i.e., periallocortex, agranular mesocortex, dysgranular mesocortex, eulaminate-I isocortex, eulaminate-II isocortex) spanning anterior cingulate, paracingulate, orbitofrontal, and mid-frontal gyri in bvFTD-tau (n=27), bvFTD-TDP (n=47), and healthy controls (HC; n=32). We immunostained all tissue for total neurons (NeuN; neuronal-nuclear protein) and pyramidal neurons (SMI32; non-phosphorylated neurofilament) and digitally quantified NeuN-immunoreactivity (ir) and SMI32-ir in supragranular II-III, infragranular V-VI, and all I-VI layers in each cytoarchitectonic type. We used linear mixed-effects models adjusted for demographic and biologic variables to compare SMI32-ir between groups and examine relationships with the cortical gradient, long-range pathways, and clinical symptoms. We found regional and laminar distributions of SMI32-ir expected for HC, validating our measures within the cortical gradient framework. While SMI32-ir loss was not related to the cortical gradient in bvFTD-TDP, SMI32-ir progressively decreased along the cortical gradient of bvFTD-tau and included greater SMI32-ir loss in supragranular eulaminate-II isocortex in bvFTD-tau vs bvFTD-TDP ( p =0.039). In a structural model for long-range laminar connectivity between infragranular mesocortex and supragranular isocortex, we found a larger laminar ratio of mesocortex-to-isocortex SMI32-ir in bvFTD-tau vs bvFTD-TDP ( p =0.019), suggesting select long-projecting pathways may contribute to isocortical-predominant degeneration in bvFTD-tau. In cytoarchitectonic types with the highest NeuN-ir, we found lower SMI32-ir in bvFTD-tau vs bvFTD-TDP ( p =0.047), suggesting pyramidal neurodegeneration may occur earlier in bvFTD-tau. Lastly, we found that reduced SMI32-ir related to behavioral severity and frontal-mediated letter fluency, not temporal-mediated confrontation naming, demonstrating the clinical relevance and specificity of frontal pyramidal neurodegeneration to bvFTD-related symptoms. Our data suggest loss of neurofilament-rich pyramidal neurons is a clinically relevant feature of bvFTD that selectively worsens along a frontal cortical gradient in bvFTD-tau, not bvFTD-TDP. Therefore, tau-mediated degeneration may preferentially involve pyramidal-rich layers that connect more distant cytoarchitectonic types. Moreover, the hierarchical arrangement of cytoarchitecture along cortical gradients may be an important neuroanatomical framework for identifying which types of cells and pathways are differentially involved between proteinopathies.
Collapse
|
11
|
Parmeggiani B, Signori MF, Cecatto C, Frusciante MR, Marcuzzo MB, Souza DG, Ribeiro RT, Seminotti B, Gomes de Souza DO, Ribeiro CAJ, Wajner M, Leipnitz G. Glycine disrupts myelin, glutamatergic neurotransmission, and redox homeostasis in a neonatal model for non ketotic hyperglycinemia. Biochimie 2024; 219:21-32. [PMID: 37541567 DOI: 10.1016/j.biochi.2023.07.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 06/26/2023] [Accepted: 07/30/2023] [Indexed: 08/06/2023]
Abstract
Non ketotic hyperglycinemia (NKH) is an inborn error of glycine metabolism caused by mutations in the genes encoding glycine cleavage system proteins. Classic NKH has a neonatal onset, and patients present with severe neurodegeneration. Although glycine accumulation has been implicated in NKH pathophysiology, the exact mechanisms underlying the neurological damage and white matter alterations remain unclear. We investigated the effects of glycine in the brain of neonatal rats and MO3.13 oligodendroglial cells. Glycine decreased myelin basic protein (MBP) and myelin-associated glycoprotein (MAG) in the corpus callosum and striatum of rats on post-natal day (PND) 15. Glycine also reduced neuroglycan 2 (NG2) and N-methyl-d-aspartate receptor subunit 1 (NR1) in the cerebral cortex and striatum on PND15. Moreover, glycine reduced striatal glutamate aspartate transporter 1 (GLAST) content and neuronal nucleus (NeuN), and increased glial fibrillary acidic protein (GFAP) on PND15. Glycine also increased DCFH oxidation and malondialdehyde levels and decreased GSH concentrations in the cerebral cortex and striatum on PND6, but not on PND15. Glycine further reduced viability but did not alter DCFH oxidation and GSH levels in MO3.13 cells after 48- and 72-h incubation. These data indicate that impairment of myelin structure and glutamatergic system and induction of oxidative stress are involved in the neuropathophysiology of NKH.
Collapse
Affiliation(s)
- Belisa Parmeggiani
- Programa de Pós-Graduação em Ciências Biológicas - Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
| | - Marian Flores Signori
- Programa de Pós-Graduação em Ciências Biológicas - Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Cristiane Cecatto
- Programa de Pós-Graduação em Ciências Biológicas - Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Marina Rocha Frusciante
- Programa de Pós-Graduação em Ciências Biológicas - Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Manuela Bianchin Marcuzzo
- Programa de Pós-Graduação em Ciências Biológicas - Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Débora Guerini Souza
- Programa de Pós-Graduação em Ciências Biológicas - Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Brain Institute of Rio Grande do Sul, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Rafael Teixeira Ribeiro
- Programa de Pós-Graduação em Ciências Biológicas - Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Bianca Seminotti
- Programa de Pós-Graduação em Ciências Biológicas - Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Diogo Onofre Gomes de Souza
- Programa de Pós-Graduação em Ciências Biológicas - Bioquímica, Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - César Augusto João Ribeiro
- Natural and Humanities Sciences Center, Universidade Federal do ABC, São Bernardo do Campo, SP, 09606-070, Brazil
| | - Moacir Wajner
- Programa de Pós-Graduação em Ciências Biológicas - Bioquímica, Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Serviço de Genética Médica do Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil
| | - Guilhian Leipnitz
- Programa de Pós-Graduação em Ciências Biológicas - Bioquímica, Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
| |
Collapse
|
12
|
Ramot Y, Kronfeld N, Steiner M, Manassa NN, Bahar A, Nyska A. Neural tissue tolerance to synthetic dural mater graft implantation in a rabbit durotomy model. J Toxicol Pathol 2024; 37:83-91. [PMID: 38584968 PMCID: PMC10995433 DOI: 10.1293/tox.2023-0121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 01/09/2024] [Indexed: 04/09/2024] Open
Abstract
In neurosurgical interventions, effective closure of the dura mater is essential to prevent cerebrospinal fluid leakage and minimize post-operative complications. Biodegradable synthetic materials have the potential to be used as dura mater grafts owing to their regenerative properties and low immunogenicity. This study evaluated the safety of ArtiFascia, a synthetic dura mater graft composed of poly(l-lactic-co-caprolactone acid) and poly(d-lactic-co-caprolactone acid), in a rabbit durotomy model. Previously, ArtiFascia demonstrated positive local tolerance and biodegradability in a 12-month preclinical trial. Here, specialized stains were used to evaluate potential brain damage associated with ArtiFascia use. Histochemical and immunohistochemical assessments included Luxol Fast Blue, cresyl Violet, Masson's Trichrome, neuronal nuclei,, Glial Fibrillary Acidic Protein, and ionized calcium-binding adaptor molecule 1 stains. The stained slides were graded based on the brain-specific reactions. The results showed no damage to the underlying brain tissue for either the ArtiFascia or control implants. Neither inflammation nor neuronal loss was evident, corroborating the safety of the ArtiFascia. This approach, combined with previous histopathological analyses, strengthens the safety profile of ArtiFascia and sets a benchmark for biodegradable material assessment in dura graft applications. This study aligns with the Food and Drug Administration guidelines and offers a comprehensive evaluation of the potential neural tissue effects of synthetic dura mater grafts.
Collapse
Affiliation(s)
- Yuval Ramot
- Department of Dermatology, Hadassah Medical Center, PO Box
12000, Jerusalem, 9112001, Israel
- The Faculty of Medicine, Hebrew University of Jerusalem, PO
Box 12272, Jerusalem, 9112001, Israel
| | - Noam Kronfeld
- Department of Dermatology, Hadassah Medical Center, PO Box
12000, Jerusalem, 9112001, Israel
- Envigo CRS (Israel), Einstein St., Building 13B, Weizmann
Science Park, Ness Ziona, 7414001, Israel
| | - Michal Steiner
- Pre-Clinical Consultant, Carmel St. 11/22, Rehovot, 7630511,
Israel
| | - Nora Nseir Manassa
- Nurami Medical Nanofiber Technology, Ha-Namal St 36, Haifa,
303203, Israel
| | - Amir Bahar
- Nurami Medical Nanofiber Technology, Ha-Namal St 36, Haifa,
303203, Israel
| | - Abraham Nyska
- Consultant in Toxicologic Pathology, Tel Aviv and Tel Aviv
University, Yehuda HaMaccabi 31, Tel Aviv 6200515, Israel
| |
Collapse
|
13
|
Yilmaz E, Acar G, Onal U, Erdogan E, Baltaci AK, Mogulkoc R. Effect of 2-Week Naringin Supplementation on Neurogenesis and BDNF Levels in Ischemia-Reperfusion Model of Rats. Neuromolecular Med 2024; 26:4. [PMID: 38457013 PMCID: PMC10924031 DOI: 10.1007/s12017-023-08771-0] [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: 10/10/2023] [Accepted: 11/23/2023] [Indexed: 03/09/2024]
Abstract
BACKGROUND Ischemic stroke is the leading cause of mortality and disability worldwide with more than half of survivors living with serious neurological sequelae; thus, it has recently attracted a lot of attention in the field of medical study. PURPOSE The aim of this study was to determine the effect of naringin supplementation on neurogenesis and brain-derived neurotrophic factor (BDNF) levels in the brain in experimental brain ischemia-reperfusion. STUDY DESIGN The research was carried out on 40 male Wistar-type rats (10-12 weeks old) obtained from the Experimental Animals Research and Application Center of Selçuk University. Experimental groups were as follows: (1) Control group, (2) Sham group, (3) Brain ischemia-reperfusion group, (4) Brain ischemia-reperfusion + vehicle group (administered for 14 days), and (5) Brain ischemia-reperfusion + Naringin group (100 mg/kg/day administered for 14 days). METHODS In the ischemia-reperfusion groups, global ischemia was performed in the brain by ligation of the right and left carotid arteries for 30 min. Naringin was administered to experimental animals by intragastric route for 14 days following reperfusion. The training phase of the rotarod test was started 4 days before ischemia-reperfusion, and the test phase together with neurological scoring was performed the day before and 1, 7, and 14 days after the operation. At the end of the experiment, animals were sacrificed, and then hippocampus and frontal cortex tissues were taken from the brain. Double cortin marker (DCX), neuronal nuclear antigen marker (NeuN), and BDNF were evaluated in hippocampus and frontal cortex tissues by Real-Time qPCR analysis and immunohistochemistry methods. RESULTS While ischemia-reperfusion increased the neurological score values, DCX, NeuN, and BDNF levels decreased significantly after ischemia in the hippocampus and frontal cortex tissues. However, naringin supplementation restored the deterioration to a certain extent. CONCLUSION The results of the study show that 2 weeks of naringin supplementation may have protective effects on impaired neurogenesis and BDNF levels after brain ischemia and reperfusion in rats.
Collapse
Affiliation(s)
- Esen Yilmaz
- Department of Medical Physiology, Selcuk University, 42250, Konya, Turkey
| | - Gozde Acar
- Department of Medical Physiology, Selcuk University, 42250, Konya, Turkey
| | - Ummugulsum Onal
- Department of Histology, Selcuk University, 42250, Konya, Turkey
| | - Ender Erdogan
- Department of Histology, Selcuk University, 42250, Konya, Turkey
| | | | - Rasim Mogulkoc
- Department of Medical Physiology, Selcuk University, 42250, Konya, Turkey.
| |
Collapse
|
14
|
Li M, Huan Y, Jiang T, He Y, Gao Z. Rehabilitation training enhanced the therapeutic effect of calycosin on neurological function recovery of rats following spinal cord injury. J Chem Neuroanat 2024; 136:102384. [PMID: 38154570 DOI: 10.1016/j.jchemneu.2023.102384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 12/13/2023] [Accepted: 12/24/2023] [Indexed: 12/30/2023]
Abstract
BACKGROUND Calycosin (CA), a flavonoids component, has demonstrated potential neuroprotection effects by inhibiting oxidative stress in spinal cord injury (SCI) models. This study aims to investigate the impact of combined rehabilitation training (RT) and calycosin therapy on neurological function following SCI, primarily by assessing changes in motor function recovery, neuronal survival, neuronal oxidative stress levels, and neural proliferation, in order to provide novel insights for the treatment of SCI. MATERIALS AND METHODS The SCI model was constructed by compressing the spinal cord using vascular clamps. Calycosin was injected intraperitoneally into the SCI model rats, and a group of 5 rats underwent RT. The motor function of rats after SCI was evaluated using the Basso Beattle Bresnaha (BBB) score and the inclined plate test. Histopathological changes were evaluated by NeuN immunohistochemistry, HE and Nissl staining. Apoptosis was detected by TUNEL staining. The antioxidant effect of combined treatment was assessed by measuring changes in oxidative stress markers after SCI. Western blot analysis was conducted to examine changes in Hsp90-Akt/ASK1-p38 pathway-related proteins. Finally, cell proliferation was detected by BrdU and Ki67 assays. RESULTS RT significantly improved the BBB score and angle of incline promoted by calycosin, resulting in enhanced motor function recovery in rats with SCI. Combining rehabilitation training with calycosin has a positive effect on morphological recovery. Similarly, combined RT enhanced the Nissl and NeuN staining signals of spinal cord neurons increased by calycosin, thereby increasing the number of neurons. TUNEL staining results indicated that calycosin treatment reduced the apoptosis signal in SCI, and the addition of RT further reduced the apoptosis. Moreover, RT combined with calycosin reduced oxidative stress by increasing SOD and GSH levels, while decreasing MDA, NO, ROS, and LDH expressions compared to the calycosin alone. RT slightly enhanced the effect of calycosin in activating Hsp90 and Akt and inhibiting the activation of ASK1 and p38, leading to enhanced inhibition of oxidative stress by calycosin. Additionally, the proliferation indexes (Ki67 and BrdU) assays showed that calycosin treatment alone increased both, whereas the combination treatment further promoted cell proliferation. CONCLUSION Our research findings demonstrate that rehabilitation training enhances the ability of calycosin to reduce oxidative stress, resulting in a decrease in neuronal apoptosis and an increase in proliferation, ultimately promoting neuronal survival.
Collapse
Affiliation(s)
- Mingdong Li
- Department of Spine Surgery, Zhongda Hospital, Southeast University, Nanjing 210009, China; Department of Orthopaedics and Traumatology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou 570311, China
| | - Yanqiang Huan
- Department of Spine Surgery, Inner Mongolia People's Hospital, Hohhot 010017, China
| | - Tianqi Jiang
- Department of Spine Surgery, Inner Mongolia People's Hospital, Hohhot 010017, China
| | - Yongxiong He
- Department of Spine Surgery, The Second Affiliated Hospital of Hainan Medical University, Haikou 570216, China
| | - Zengxin Gao
- Department of Spine Surgery, Zhongda Hospital, Southeast University, Nanjing 210009, China; Department of Orthopedics, Nanjing Lishui People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Nanjing 211200, China.
| |
Collapse
|
15
|
Liu X, Gu J, Wang C, Peng M, Zhou J, Fei X, Zhong Z, Li B. Ginsenoside Rg3 attenuates neuroinflammation and hippocampal neuronal damage after traumatic brain injury in mice by inactivating the NF-kB pathway via SIRT1 activation. Cell Cycle 2024; 23:662-681. [PMID: 38796716 PMCID: PMC11229723 DOI: 10.1080/15384101.2024.2355008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 05/07/2024] [Indexed: 05/28/2024] Open
Abstract
This investigation examined the potential of ginsenoside Rg3 in addressing traumatic brain injury (TBI). A TBI mouse model underwent treatment with ginsenoside Rg3 and nicotinamide (NAM). Neurological and motor functions were assessed using modified neurological severity score and rotarod tests. Brain water content in mice was detected. Primary mouse microglia were exposed to lipopolysaccharide (LPS), ginsenoside Rg3, and NAM. Nissl and immunofluorescence staining were utilized to investigate hippocampal damage, and localization of P65, Iba1 and INOS in microglia. Hippocampal neurons were grown in a culture medium derived from microglia. CCK-8 and TUNEL assays were employed to evaluate the viability and apoptosis of hippocampal neurons. Proinflammatory factors and proteins were tested using ELISA, western blot and immunofluorescence staining. As a result, ginsenoside Rg3 enhanced neurological and motor functions in mice post-TBI, reduced brain water content, alleviated hippocampal neuronal neuroinflammation and damage, activated SIRT1, and deactivated the NF-kB pathway. In LPS-stimulated microglia, ginsenoside Rg3 diminished inflammation, activated SIRT1, deactivated the NF-kB pathway, and facilitated nuclear localization of P65 and co-localization of Iba1 and INOS. The effects of ginsenoside Rg3 were countered by NAM in both TBI mice and LPS-stimulated microglia. Hippocampal neurons cultured in a medium containing LPS, ginsenoside Rg3, and NAM-treated microglia showed improved viability and reduced apoptosis compared to those cultured in a medium with LPS and ginsenoside Rg3-treated microglia alone. Ginsenoside Rg3 was effective in reducing neuroinflammation and damage in hippocampal neurons following TBI by modulating the SIRT1/NF-kB pathway, suggesting its potential as a therapeutic agent for TBI.
Collapse
Affiliation(s)
- Xi Liu
- Department of Neurosurgery, Changsha of Traditional Chinese Medicine Hospital, Changsha, Hunan, China
| | - Jia Gu
- Hunan International Scientific and Technological Cooperation Base of Brain Tumor Research, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Cheng Wang
- Department of Neurosurgery, Changsha of Traditional Chinese Medicine Hospital, Changsha, Hunan, China
| | - Min Peng
- Department of Neurosurgery, Changsha of Traditional Chinese Medicine Hospital, Changsha, Hunan, China
| | - Jilin Zhou
- Department of Neurosurgery, Changsha of Traditional Chinese Medicine Hospital, Changsha, Hunan, China
| | - Xiyun Fei
- Department of Neurosurgery, Changsha of Traditional Chinese Medicine Hospital, Changsha, Hunan, China
| | - Zhijun Zhong
- Department of Neurosurgery, Changsha of Traditional Chinese Medicine Hospital, Changsha, Hunan, China
| | - Bo Li
- Department of Thoracic Surgery, Changsha of Traditional Chinese Medicine Hospital, Changsha, Hunan, China
| |
Collapse
|
16
|
Vita SM, Cruise SC, Gilpin NW, Molina PE. Histological comparison of repeated mild weight drop and lateral fluid percussion injury models of traumatic brain injury (TBI) in female and male rats. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.31.578177. [PMID: 38352449 PMCID: PMC10862833 DOI: 10.1101/2024.01.31.578177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
Traumatic brain injury (TBI) heterogeneity has led to the development of several preclinical models, each modeling a distinct subset of outcomes. Selection of an injury model should be guided by the research question and the specific outcome measures of interest. Consequently, there is a need for conducting direct comparisons of different TBI models. Here, we used immunohistochemistry to directly compare the outcomes from two common models, lateral fluid percussion (LFP) and repeat mild weight drop (rmWD), on neuropathology in adult female and male Wistar rats. Specifically, we used immunohistochemistry to measure the effects of LFP and rmWD on cerebrovascular and tight junction disruption, inflammatory markers, mature neurons and perineuronal nets in the cortical site of injury, cortex adjacent to injury, dentate gyrus, and the CA2/3 area of the hippocampus. Animals were randomized into either LFP or rmWD groups. The LFP group received a craniotomy prior to LFP (or corresponding sham procedure) three days later, while rmWD animals underwent either weight drop or sham (isoflurane only) on each of those four days. After a recovery period of 7 days, animals were euthanized, and brains were harvested for analysis of RECA-1, claudin-5, GFAP, Iba-1, CD-68, NeuN, and wisteria floribunda lectin. Overall, our observations revealed that the most significant disruptions were evident in response to LFP, followed by craniotomy-only, while rmWD animals showed the least residual changes compared to isoflurane-only controls. These findings support consideration of rmWD as a mild, transient injury. LFP leads to longer-lasting disruptions that are more closely associated with a moderate TBI. We further show that both craniotomy and LFP produced greater disruptions in females relative to males at 7 days post-injury. These findings support the inclusion of a time-matched experimentally-naïve or anesthesia-only control group in preclinical TBI research to enhance the validity of data interpretation and conclusions.
Collapse
|
17
|
Xie L, Wu H, He Q, Shi W, Zhang J, Xiao X, Yu T. A slow-releasing donor of hydrogen sulfide inhibits neuronal cell death via anti-PANoptosis in rats with spinal cord ischemia‒reperfusion injury. Cell Commun Signal 2024; 22:33. [PMID: 38217003 PMCID: PMC10785475 DOI: 10.1186/s12964-023-01457-x] [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: 10/19/2023] [Accepted: 12/23/2023] [Indexed: 01/14/2024] Open
Abstract
BACKGROUND Spinal cord ischemia‒reperfusion injury (SCIRI) can lead to paraplegia, which leads to permanent motor function loss. It is a disastrous complication of surgery and causes tremendous socioeconomic burden. However, effective treatments for SCIRI are still lacking. PANoptosis consists of three kinds of programmed cell death, pyroptosis, apoptosis, and necroptosis, and may contribute to ischemia‒reperfusion-induced neuron death. Previous studies have demonstrated that hydrogen sulfide (H2S) exerts a neuroprotective effect in many neurodegenerative diseases. However, whether H2S is anti-PANoptosis and neuroprotective in the progression of acute SCIRI remains unclear. Thus, in this study we aimed to explore the role of H2S in SCIRI and its underlying mechanisms. METHODS Measurements of lower limb function, neuronal activity, microglia/macrophage function histopathological examinations, and biochemical levels were performed to examine the efficacy of H2S and to further demonstrate the mechanism and treatment of SCIRI. RESULTS The results showed that GYY4137 (a slow-releasing H2S donor) treatment attenuated the loss of Nissl bodies after SCIRI and improved the BBB score. Additionally, the number of TUNEL-positive and cleaved caspase-3-positive cells was decreased, and the upregulation of expression of cleaved caspase-8, cleaved caspase-3, Bax, and Bad and downregulation of Bcl-2 expression were reversed after GYY4137 administration. Meanwhile, both the expression and activation of p-MLKL, p-RIP1, and p-RIP3, along with the number of PI-positive and RIP3-positive neurons, were decreased in GYY4137-treated rats. Furthermore, GYY4137 administration reduced the expression of NLRP3, cleaved caspase-1 and cleaved GSDMD, decreased the colocalization NeuN/NLRP3 and Iba1/interleukin-1β-expressing cells, and inhibited proinflammatory factors and microglia/macrophage polarization. CONCLUSIONS H2S ameliorated spinal cord neuron loss, prevented motor dysfunction after SCIRI, and exerted a neuroprotective effect via the inhibition of PANoptosis and overactivated microglia-mediated neuroinflammation in SCIRI.
Collapse
Affiliation(s)
- Lei Xie
- Department of Orthopedic Surgery, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
- Institute of Sports Medicine and Health, Qingdao University, Qingdao, China
| | - Hang Wu
- Institute of Sports Medicine and Health, Qingdao University, Qingdao, China
- Department of Orthopedics, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
| | - Qiuping He
- Department of Orthopedic Surgery, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
- Institute of Sports Medicine and Health, Qingdao University, Qingdao, China
| | - Weipeng Shi
- Institute of Sports Medicine and Health, Qingdao University, Qingdao, China
- Department of Orthopedics, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
| | - Jing Zhang
- Institute of Sports Medicine and Health, Qingdao University, Qingdao, China
- Department of Orthopedics, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
| | - Xiao Xiao
- Central Laboratories, Qingdao Municipal Hospital, University of Health and Rehabilitation Sciences, Qingdao, China.
| | - Tengbo Yu
- Department of Orthopedic Surgery, Qingdao Municipal Hospital, University of Health and Rehabilitation Sciences, Qingdao, China.
| |
Collapse
|
18
|
Xu Z, Zheng L, Li S. Paclitaxel-induced inhibition of NSCLC invasion and migration via RBFOX3-mediated circIGF1R biogenesis. Sci Rep 2024; 14:774. [PMID: 38191906 PMCID: PMC10774373 DOI: 10.1038/s41598-024-51500-1] [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: 07/10/2023] [Accepted: 01/05/2024] [Indexed: 01/10/2024] Open
Abstract
We previously reported that circIGF1R is significantly downregulated in non-small cell lung cancer (NSCLC) cells and tissues. It inhibits cancer cell invasion and migration, although the underlying molecular mechanisms remain elusive. The invasion and migration of NSCLC cells was analyzed by routine in vivo and in vitro functional assays. Fluorescent in situ hybridization, luciferase reporter assay, RNA pull-down assay and RNA immunoprecipitation (RIP) assay were performed to explore the molecular mechanisms. Mechanism of action of paclitaxel-induced RBFOX3-mediated inhibition of NSCLC invasion and migration was investigated through in vitro and in vivo experiments.Our study reveals that circIGF1R acts as a Competing Endogenous RNA (ceRNA) for miR-1270, thereby regulating Van-Gogh-like 2 (VANGL2) expression and subsequently inhibiting NSCLC cell invasion and migration via the Wnt pathway. We also found that RNA binding protein fox-1 homolog 3 (RBFOX3) enhances circIGF1R biogenesis by binding to IGF1R pre-mRNA, which in turn suppresses migration and invasion in NSCLC cells. Additionally, the chemotherapeutic drug paclitaxel was shown to impede NSCLC invasion and migration by inducing RBFOX3-mediated circIGF1R biogenesis.RBFOX3 inhibits the invasion and migration of NSCLC cells through the circIGF1R/ miR-1270/VANGL2 axis, circIGF1R has the potential to serve as a biomarker and therapeutic target for NSCLC.
Collapse
Affiliation(s)
- Zhanyu Xu
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Liping Zheng
- Department of Anesthesia Catheter Room, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, Guangxi Zhuang Autonomous Region, People's Republic of China
| | - Shikang Li
- Department of Thoracic and Cardiovascular Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, Guangxi Zhuang Autonomous Region, People's Republic of China.
| |
Collapse
|
19
|
Cheng F, Yan F, Yang A, Liu J, Ma J. Activation of G protein-coupled receptor 39 alleviates neuropathic pain and chronic inflammation. J Biochem Mol Toxicol 2024; 38:e23545. [PMID: 37842769 DOI: 10.1002/jbt.23545] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 08/20/2023] [Accepted: 09/26/2023] [Indexed: 10/17/2023]
Abstract
Neuropathic pain (NP) is mainly caused by lesions or diseases of the somatosensory nervous system and triggers severe physical burdens to patients. It is claimed that activated microglia-mediated neuroinflammation participates in the development of NP, which is regulated by p38 mitogen-activated protein kinase (MAPK)/nuclear factor-κappa B (NF-κB) p65 signaling. G protein-coupled receptor 39 (GPR39) is a trans-membrane protein involved in the activation of cellular transduction pathways, and TC-G 1008, a GPR39 agonist, is believed to have inhibitory effects on neuroinflammation. Our study will explore the possible alleviatory function of TC-G 1008 on NP in a rat model. GPR39 was found markedly downregulated in the spinal dorsal horn of chronic constriction injury (CCI)-stimulated rats. Rats were treated with CCI, followed by intranasal administration with 7.5 and 15 mg/kg TC-G 1008 at 1, 25, 49, and 73 h postmodeling, respectively. Drastically lowered values of paw withdrawal threshold and paw withdrawal latency, upregulated ionized calcium-binding adapter molecule 1, increased release of inflammatory cytokines, elevated spinal malondialdehyde levels, and reduced spinal glutathione peroxidase levels were observed in CCI-stimulated rats, all of which were markedly alleviated and rescued by TC-G 1008. Furthermore, the levels of p-p38/p38 and p-NF-κB p65 were found signally repressed in the spinal dorsal horn of CCI-stimulated rats, which was notably reversed by TC-G 1008. Collectively, TC-G 1008 markedly alleviated NP and neuroinflammation in CCI-treated rats. Our findings provide an attractive future direction for the treatment of NP.
Collapse
Affiliation(s)
- Fang Cheng
- Department of Anesthesiology and Pain Clinic, The Affiliated Lianyungang Oriental Hospital of Kangda College of Nanjing Medical University, Lianyungang, China
- Department of Oncology, The Affiliated Lianyungang Oriental Hospital of Xuzhou Medical University, Lianyungang, China
| | - Fengfeng Yan
- Department of Anesthesiology and Pain Clinic, The Affiliated Lianyungang Oriental Hospital of Kangda College of Nanjing Medical University, Lianyungang, China
- Department of Oncology, The Affiliated Lianyungang Oriental Hospital of Xuzhou Medical University, Lianyungang, China
| | - Aixing Yang
- Department of Anesthesiology and Pain Clinic, The Affiliated Lianyungang Oriental Hospital of Kangda College of Nanjing Medical University, Lianyungang, China
- Department of Oncology, The Affiliated Lianyungang Oriental Hospital of Xuzhou Medical University, Lianyungang, China
| | - Jing Liu
- Department of Anesthesiology and Pain Clinic, The Affiliated Lianyungang Oriental Hospital of Kangda College of Nanjing Medical University, Lianyungang, China
- Department of Oncology, The Affiliated Lianyungang Oriental Hospital of Xuzhou Medical University, Lianyungang, China
| | - Jianxin Ma
- Department of Oncology, The Affiliated Lianyungang Oriental Hospital of Xuzhou Medical University, Lianyungang, China
| |
Collapse
|
20
|
Omar OMF, Kimble AL, Cheemala A, Tyburski JD, Pandey S, Wu Q, Reese B, Jellison ER, Li Y, Hao B, Yan R, Murphy PA. Targeted inCITE-Seq Analysis Identifies the Loss of Nuclear TDP-43 in Endothelium as a Mediator of Blood Brain Barrier Signaling Pathway Dysfunction in Neurodegeneration. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.13.571178. [PMID: 38168276 PMCID: PMC10760156 DOI: 10.1101/2023.12.13.571178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Despite the importance of the endothelium in the regulation of the blood brain barrier (BBB) in aging and neurodegenerative disease, difficulties in extracting endothelial cell (EC) nuclei have limited analysis of these cells. In addition, nearly all Amyotrophic Lateral Sclerosis (ALS) and Frontotemporal Degeneration (FTD), and a large portion of Alzheimer's Disease (AD) exhibit neuronal TDP-43 aggregation, leading to loss of nuclear function, but whether TDP-43 is similarly altered in human BBB ECs is unknown. Here we utilize a novel technique for the enrichment of endothelial and microglial nuclei from human cortical brain tissues, combined with inCITE-seq, to analyze nuclear proteins and RNA transcripts in a large cohort of healthy and diseased donors. Our findings reveal a unique transcriptional signature in nearly half of the capillary endothelial cells across neurodegenerative states, characterized by reduced levels of nuclear β-Catenin and canonical downstream genes, and an increase in TNF/NF-kB target genes. We demonstrate that this does not correlate with increased nuclear p65/NF-kB, but rather a specific loss of nuclear TDP-43 in these disease associated ECs. Comparative analysis in animal models with targeted disruption of TDP-43 shows that this is sufficient to drive these transcriptional alterations. This work reveals that TDP-43 is a critical governor of the transcriptional output from nuclear p65/NF-kB, which has paradoxical roles in barrier maintenance and also barrier compromising inflammatory responses, and suggests that disease specific loss in ECs contributes to BBB defects observed in the progression of AD, ALS and FTD.
Collapse
Affiliation(s)
- Omar M F Omar
- Center for Vascular Biology, University of Connecticut Medical School, Farmington CT
| | - Amy L Kimble
- Center for Vascular Biology, University of Connecticut Medical School, Farmington CT
| | - Ashok Cheemala
- Center for Vascular Biology, University of Connecticut Medical School, Farmington CT
| | - Jordan D Tyburski
- Center for Vascular Biology, University of Connecticut Medical School, Farmington CT
| | - Swati Pandey
- Center for Vascular Biology, University of Connecticut Medical School, Farmington CT
| | - Qian Wu
- Department of Pathology, University of Connecticut Medical School, Farmington CT
| | - Bo Reese
- Center for Genome Innovation, University of Connecticut, Storrs CT
| | - Evan R Jellison
- Department of Immunology, University of Connecticut Medical School, Farmington CT
| | - Yunfeng Li
- Department of Molecular Biology and Biophysics, Farmington CT
| | - Bing Hao
- Department of Molecular Biology and Biophysics, Farmington CT
| | - Riqiang Yan
- Department of Neuroscience, University of Connecticut Medical School, Farmington CT
| | - Patrick A Murphy
- Center for Vascular Biology, University of Connecticut Medical School, Farmington CT
- Department of Immunology, University of Connecticut Medical School, Farmington CT
- Department of Neuroscience, University of Connecticut Medical School, Farmington CT
| |
Collapse
|
21
|
Geibl FF, Henrich MT, Xie Z, Zampese E, Tkatch T, Wokosin DL, Nasiri E, Grotmann CA, Dawson VL, Dawson TM, Chandel NS, Oertel WH, Surmeier DJ. α-Synuclein pathology disrupts mitochondrial function in dopaminergic and cholinergic neurons at-risk in Parkinson's disease. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.11.571045. [PMID: 38168401 PMCID: PMC10759995 DOI: 10.1101/2023.12.11.571045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Background Pathological accumulation of aggregated α-synuclein (aSYN) is a common feature of Parkinson's disease (PD). However, the mechanisms by which intracellular aSYN pathology contributes to dysfunction and degeneration of neurons in the brain are still unclear. A potentially relevant target of aSYN is the mitochondrion. To test this hypothesis, genetic and physiological methods were used to monitor mitochondrial function in substantia nigra pars compacta (SNc) dopaminergic and pedunculopontine nucleus (PPN) cholinergic neurons after stereotaxic injection of aSYN pre-formed fibrils (PFFs) into the mouse brain. Methods aSYN PPFs were stereotaxically injected into the SNc or PPN of mice. Twelve weeks later, mice were studied using a combination of approaches, including immunocytochemical analysis, cell- type specific transcriptomic profiling, electron microscopy, electrophysiology and two-photon-laser- scanning microscopy of genetically encoded sensors for bioenergetic and redox status. Results In addition to inducing a significant neuronal loss, SNc injection of PFFs induced the formation of intracellular, phosphorylated aSYN aggregates selectively in dopaminergic neurons. In these neurons, PFF-exposure decreased mitochondrial gene expression, reduced the number of mitochondria, increased oxidant stress, and profoundly disrupted mitochondrial adenosine triphosphate production. Consistent with an aSYN-induced bioenergetic deficit, the autonomous spiking of dopaminergic neurons slowed or stopped. PFFs also up-regulated lysosomal gene expression and increased lysosomal abundance, leading to the formation of Lewy-like inclusions. Similar changes were observed in PPN cholinergic neurons following aSYN PFF exposure. Conclusions Taken together, our findings suggest that disruption of mitochondrial function, and the subsequent bioenergetic deficit, is a proximal step in the cascade of events induced by aSYN pathology leading to dysfunction and degeneration of neurons at-risk in PD.
Collapse
|
22
|
Tortella L, Santini I, Lozano N, Kostarelos K, Cellot G, Ballerini L. Graphene Oxide Nanosheets Hamper Glutamate Mediated Excitotoxicity and Protect Neuronal Survival In An In vitro Stroke Model. Chemistry 2023; 29:e202301762. [PMID: 37706581 DOI: 10.1002/chem.202301762] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 09/06/2023] [Accepted: 09/13/2023] [Indexed: 09/15/2023]
Abstract
Small graphene oxide (s-GO) nanosheets reversibly downregulate central nervous system (CNS) excitatory synapses, with potential developments as future therapeutic tools to treat neuro-disorders characterized by altered glutamatergic transmission. Excitotoxicity, namely cell death triggered by exceeding ambient glutamate fueling over-activation of excitatory synapses, is a pathogenic mechanism shared by several neural diseases, from ischemic stroke to neurodegenerative disorders. In this work, CNS cultures were exposed to oxygen-glucose deprivation (OGD) to mimic ischemic stroke in vitro, and it is show that the delivery of s-GO following OGD, during the endogenous build-up of secondary damage and excitotoxicity, improved neuronal survival. In a different paradigm, excitotoxicity cell damage was reproduced through exogenous glutamate application, and s-GO co-treatment protected neuronal integrity, potentially by directly downregulating the synaptic over-activation brought about by exogenous glutamate. This proof-of-concept study suggests that s-GO may find novel applications in therapeutic developments for treating excitotoxicity-driven neural cell death.
Collapse
Affiliation(s)
- Lorenza Tortella
- Neuroscience Area, International School for Advanced Studies (SISSA/ISAS), Via Bonomea 265, 34136, Trieste, Italy
| | - Irene Santini
- Neuroscience Area, International School for Advanced Studies (SISSA/ISAS), Via Bonomea 265, 34136, Trieste, Italy
| | - Neus Lozano
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - Kostas Kostarelos
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Spain
- Nanomedicine Lab, and Faculty of Biology, Medicine & Health, The National Graphene Institute, University of Manchester, Manchester, M13 9PL, United Kingdom
| | - Giada Cellot
- Neuroscience Area, International School for Advanced Studies (SISSA/ISAS), Via Bonomea 265, 34136, Trieste, Italy
| | - Laura Ballerini
- Neuroscience Area, International School for Advanced Studies (SISSA/ISAS), Via Bonomea 265, 34136, Trieste, Italy
| |
Collapse
|
23
|
Dos Santos MG, Gomes JR, Costa MDM. Methods used to achieve different levels of the neuronal differentiation process in SH-SY5Y and Neuro2a cell lines: An integrative review. Cell Biol Int 2023; 47:1883-1894. [PMID: 37817323 DOI: 10.1002/cbin.12093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 08/16/2023] [Accepted: 09/20/2023] [Indexed: 10/12/2023]
Abstract
To study the process of neuronal differentiation, the human neuroblastoma (SH-SY5Y) and the murine neuroblastoma (Neuro2a) cell lines have proven to be effective models. For this approach, different protocols involving known neurotrophic factors and other molecules, such as retinoic acid (RA), have been assessed to better understand the neuronal differentiation process. Thus, the goal of this manuscript was to provide a brief overview of recent studies that have used protocols to promote neurodifferentiation in SH-SY5Y and Neuro2a cell lines and used acquired morphology and neuronal markers to validate whether differentiation was effective. The published results supply some guidance regarding the relationship between RA and neurotrophins for SH-SY5Y, as well a serum concentrations for both cell lines. Furthermore, they demonstrate the potential application of Neuro2a, which is critical for future research on neuronal differentiation.
Collapse
Affiliation(s)
- Mônica G Dos Santos
- Biomedical Science Postgraduate Program, State University of Ponta Grossa, Ponta Grossa, Paraná, Brazil
| | - José R Gomes
- Biomedical Science Postgraduate Program, State University of Ponta Grossa, Ponta Grossa, Paraná, Brazil
| | - Michele D M Costa
- Biomedical Science Postgraduate Program, State University of Ponta Grossa, Ponta Grossa, Paraná, Brazil
| |
Collapse
|
24
|
Li H, Zhang Q, Wan R, Zhou L, Xu X, Xu C, Yu Y, Xu Y, Xiang Y, Tang S. PLPPR4 haploinsufficiency causes neurodevelopmental disorders by disrupting synaptic plasticity via mTOR signalling. J Cell Mol Med 2023; 27:3286-3295. [PMID: 37550884 PMCID: PMC10623522 DOI: 10.1111/jcmm.17899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 07/20/2023] [Accepted: 07/30/2023] [Indexed: 08/09/2023] Open
Abstract
Phospholipid phosphatase related 4 (PLPPR4), a neuron-specific membrane protein located at the postsynaptic density of glutamatergic synapses, is a putative regulator of neuronal plasticity. However, PLPPR4 dysfunction has not been linked to genetic disorders. In this study, we report three unrelated patients with intellectual disability (ID) or autism spectrum disorder (ASD) who harbour a de novo heterozygous copy number loss of PLPPR4 in 1p21.2p21.3, a heterozygous nonsense mutation in PLPPR4 (NM_014839, c.4C > T, p.Gln2*) and a homozygous splice mutation in PLPPR4 (NM_014839: c.408 + 2 T > C), respectively. Bionano single-molecule optical mapping confirmed PLPPR4 deletion contains no additional pathogenic genes. Our results suggested that the loss of function of PLPPR4 is associated with neurodevelopmental disorders. To test the pathogenesis of PLPPR4, peripheral blood mononuclear cells obtained from the patient with heterozygous deletion of PLPPR4 were induced to specific iPSCs (CHWi001-A) and then differentiated into neurons. The neurons carrying the deletion of PLPPR4 displayed the reduced density of dendritic protrusions, shorter neurites and reduced axon length, suggesting the causal role of PLPPR4 in neurodevelopmental disorders. As the mTOR signalling pathway was essential for regulating the axon maturation and function, we found that mTOR signalling was inhibited with a higher level of p-AKT, p-mTOR and p-ERK1/2, decreased p-PI3K in PLPPR4-iPSCs neurons. Additionally, we found silencing PLPPR4 disturbed the mTOR signalling pathway. Our results suggested PLPPR4 modulates neurodevelopment by affecting the plasticity of neurons via the mTOR signalling pathway.
Collapse
Affiliation(s)
- Huanzheng Li
- Human Aging Research InstituteNanchang UniversityNanchangChina
| | | | - Ru Wan
- Wenzhou Central HospitalWenzhouChina
| | - Lili Zhou
- Wenzhou Central HospitalWenzhouChina
| | - Xueqin Xu
- Wenzhou Central HospitalWenzhouChina
| | | | - Yuan Yu
- Wenzhou Central HospitalWenzhouChina
| | - Yunzhi Xu
- Wenzhou Central HospitalWenzhouChina
| | | | - Shaohua Tang
- Wenzhou Central HospitalWenzhouChina
- Pediatric GeneticsZhejiang Provincial People's HospitalHangzhouChina
| |
Collapse
|
25
|
Lee YJ, Chen SR, Ko PE, Yang MY, Yu MH, Wang CJ, Lee HJ. Quercetin-3-O-β-d-glucuronide in the Nuciferine Leaf Polyphenol Extract Promotes Neurogenesis Involving the Upregulation of the Tropomyosin Receptor Kinase (Trk) Receptor and AKT/Phosphoinositide 3-Kinase Signaling Pathway. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:15582-15592. [PMID: 37819167 DOI: 10.1021/acs.jafc.3c03894] [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: 10/13/2023]
Abstract
Neurogenesis is crucial during the human lifespan for the maintenance of synaptic plasticity and normal function. The impairment of hippocampal neurogenesis in adults may lead to neurodegenerative disease, such as Alzheimer's disease. Miquelianin (quercetin-3-O-β-d-glucuronide, Q3GA) is a constituent of the nuciferine leaf polyphenol extract (NLPE), and it has protective effects against neurodegeneration. In this study, we examined the effect of the NLPE on neurogenesis and the mechanisms underlying Q3GA on neurogenesis. We fed 24-week-old male C57BL/6 mice with 0.1 or 0.25% NLPE for 2 weeks. NLPE treatment increased small spindle-shaped stem cell numbers in the subgranular zone and the number of doublecortin (DCX)- and neuron-specific nuclear protein (NeuN)-expressing neurons. HT22, a hippocampal cell line, treated with Q3GA revealed significant neurite growth and upregulated TrkR and PI3K/Akt levels. The evidence from a model of retinoic acid-induced SH-SY5Y cell differentiation showed that Q3GA or NLPE increases neurite growth significantly. Taken together, the NLPE containing Q3GA to promote neurogenesis involving the upregulation of TrkR and the PI3K/Akt signaling pathway might be potentiated as an alternative strategy for the treatment of neurodegeneration.
Collapse
Affiliation(s)
- Yi-Ju Lee
- Department of Pathology, Chung-Shan Medical University Hospital, No. 110, Section 1, Jianguo N. Road, Taichung 40201, Taiwan
- Department of Pathology, School of Medicine, Chung-Shan Medical University, No. 110, Section, Jianguo N. Road, Taichung 40201, Taiwan
| | - Sin-Rong Chen
- Institute of Medicine, Chung-Shan Medical University, No. 110, Section, Jianguo N. Road, Taichung 40201, Taiwan
| | - Ping-En Ko
- Department of Medical Laboratory and Biotechnology, Chung-Shan Medical University, No. 110, Section, Jianguo N. Road, Taichung 40201, Taiwan
| | - Mon-Yuan Yang
- Department of Health Diet and Industry Management, Chung Shan Medical University, No. 110, Section 1, Jianguo N. Road, Taichung 40201, Taiwan
| | - Meng-Hsuin Yu
- Department of Health Diet and Industry Management, Chung Shan Medical University, No. 110, Section 1, Jianguo N. Road, Taichung 40201, Taiwan
- Department of Nutrition, Chung Shan Medical University, No. 110, Section 1, Jianguo N. Road, Taichung 40201, Taiwan
| | - Chau-Jong Wang
- Department of Health Diet and Industry Management, Chung Shan Medical University, No. 110, Section 1, Jianguo N. Road, Taichung 40201, Taiwan
- Department of Medical Research, Chung Shan Medical University Hospital, No. 110, Section 1, Jianguo N. Road, Taichung 40201, Taiwan
| | - Huei-Jane Lee
- Department of Biochemistry, School of Medicine, Chung Shan Medical University, No. 110, Section 1, Jianguo N. Road, Taichung 40201, Taiwan
- Department of Clinical Biochemistry, Chung Shan Medical University Hospital, No.110, Sec. 1, Jianguo N Road, South District, Taichung 40201, Taiwan
| |
Collapse
|
26
|
Roth JG, Huang MS, Navarro RS, Akram JT, LeSavage BL, Heilshorn SC. Tunable hydrogel viscoelasticity modulates human neural maturation. SCIENCE ADVANCES 2023; 9:eadh8313. [PMID: 37862423 PMCID: PMC10588948 DOI: 10.1126/sciadv.adh8313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 09/15/2023] [Indexed: 10/22/2023]
Abstract
Human-induced pluripotent stem cells (hiPSCs) have emerged as a promising in vitro model system for studying neurodevelopment. However, current models remain limited in their ability to incorporate tunable biomechanical signaling cues imparted by the extracellular matrix (ECM). The native brain ECM is viscoelastic and stress-relaxing, exhibiting a time-dependent response to an applied force. To recapitulate the remodelability of the neural ECM, we developed a family of protein-engineered hydrogels that exhibit tunable stress relaxation rates. hiPSC-derived neural progenitor cells (NPCs) encapsulated within these gels underwent relaxation rate-dependent maturation. Specifically, NPCs within hydrogels with faster stress relaxation rates extended longer, more complex neuritic projections, exhibited decreased metabolic activity, and expressed higher levels of genes associated with neural maturation. By inhibiting actin polymerization, we observed decreased neuritic projections and a concomitant decrease in neural maturation gene expression. Together, these results suggest that microenvironmental viscoelasticity is sufficient to bias human NPC maturation.
Collapse
Affiliation(s)
- Julien G. Roth
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, USA
- Complex in Vitro Systems, Safety Assessment, Genentech Inc., South San Francisco, CA, USA
| | - Michelle S. Huang
- Department of Chemical Engineering, Stanford University, Stanford, CA, USA
| | - Renato S. Navarro
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
| | - Jason T. Akram
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
| | - Bauer L. LeSavage
- Department of Bioengineering, Stanford University, Stanford, CA, USA
| | - Sarah C. Heilshorn
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
| |
Collapse
|
27
|
Primiani CT, Lee JK, O’Brien CE, Chen MW, Perin J, Kulikowicz E, Santos P, Adams S, Lester B, Rivera-Diaz N, Olberding V, Niedzwiecki MV, Ritzl EK, Habela CW, Liu X, Yang ZJ, Koehler RC, Martin LJ. Hypothermic Protection in Neocortex Is Topographic and Laminar, Seizure Unmitigating, and Partially Rescues Neurons Depleted of RNA Splicing Protein Rbfox3/NeuN in Neonatal Hypoxic-Ischemic Male Piglets. Cells 2023; 12:2454. [PMID: 37887298 PMCID: PMC10605428 DOI: 10.3390/cells12202454] [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: 09/01/2023] [Revised: 10/10/2023] [Accepted: 10/13/2023] [Indexed: 10/28/2023] Open
Abstract
The effects of hypothermia on neonatal encephalopathy may vary topographically and cytopathologically in the neocortex with manifestations potentially influenced by seizures that alter the severity, distribution, and type of neuropathology. We developed a neonatal piglet survival model of hypoxic-ischemic (HI) encephalopathy and hypothermia (HT) with continuous electroencephalography (cEEG) for seizures. Neonatal male piglets received HI-normothermia (NT), HI-HT, sham-NT, or sham-HT treatments. Randomized unmedicated sham and HI piglets underwent cEEG during recovery. Survival was 2-7 days. Normal and pathological neurons were counted in different neocortical areas, identified by cytoarchitecture and connectomics, using hematoxylin and eosin staining and immunohistochemistry for RNA-binding FOX-1 homolog 3 (Rbfox3/NeuN). Seizure burden was determined. HI-NT piglets had a reduced normal/total neuron ratio and increased ischemic-necrotic/total neuron ratio relative to sham-NT and sham-HT piglets with differing severities in the anterior and posterior motor, somatosensory, and frontal cortices. Neocortical neuropathology was attenuated by HT. HT protection was prominent in layer III of the inferior parietal cortex. Rbfox3 immunoreactivity distinguished cortical neurons as: Rbfox3-positive/normal, Rbfox3-positive/ischemic-necrotic, and Rbfox3-depleted. HI piglets had an increased Rbfox3-depleted/total neuron ratio in layers II and III compared to sham-NT piglets. Neuronal Rbfox3 depletion was partly rescued by HT. Seizure burdens in HI-NT and HI-HT piglets were similar. We conclude that the neonatal HI piglet neocortex has: (1) suprasylvian vulnerability to HI and seizures; (2) a limited neuronal cytopathological repertoire in functionally different regions that engages protective mechanisms with HT; (3) higher seizure burden, insensitive to HT, that is correlated with more panlaminar ischemic-necrotic neurons in the somatosensory cortex; and (4) pathological RNA splicing protein nuclear depletion that is sensitive to HT. This work demonstrates that HT protection of the neocortex in neonatal HI is topographic and laminar, seizure unmitigating, and restores neuronal depletion of RNA splicing factor.
Collapse
Affiliation(s)
- Christopher T. Primiani
- Department of Neurology, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD 21205-2196, USA
| | - Jennifer K. Lee
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD 21205-2196, USA; (J.K.L.); (E.K.); (V.O.); (M.V.N.)
| | - Caitlin E. O’Brien
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD 21205-2196, USA; (J.K.L.); (E.K.); (V.O.); (M.V.N.)
| | - May W. Chen
- Department Pediatrics, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD 21205-2196, USA
| | - Jamie Perin
- Department of Biostatistics and Epidemiology, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD 21205-2196, USA
| | - Ewa Kulikowicz
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD 21205-2196, USA; (J.K.L.); (E.K.); (V.O.); (M.V.N.)
| | - Polan Santos
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD 21205-2196, USA; (J.K.L.); (E.K.); (V.O.); (M.V.N.)
| | - Shawn Adams
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD 21205-2196, USA; (J.K.L.); (E.K.); (V.O.); (M.V.N.)
| | - Bailey Lester
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD 21205-2196, USA; (J.K.L.); (E.K.); (V.O.); (M.V.N.)
| | - Natalia Rivera-Diaz
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD 21205-2196, USA; (J.K.L.); (E.K.); (V.O.); (M.V.N.)
| | - Valerie Olberding
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD 21205-2196, USA; (J.K.L.); (E.K.); (V.O.); (M.V.N.)
| | - Mark V. Niedzwiecki
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD 21205-2196, USA; (J.K.L.); (E.K.); (V.O.); (M.V.N.)
| | - Eva K. Ritzl
- Department of Neurology, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD 21205-2196, USA
| | - Christa W. Habela
- Department of Neurology, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD 21205-2196, USA
| | - Xiuyun Liu
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD 21205-2196, USA; (J.K.L.); (E.K.); (V.O.); (M.V.N.)
| | - Zeng-Jin Yang
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD 21205-2196, USA; (J.K.L.); (E.K.); (V.O.); (M.V.N.)
| | - Raymond C. Koehler
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD 21205-2196, USA; (J.K.L.); (E.K.); (V.O.); (M.V.N.)
| | - Lee J. Martin
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD 21205-2196, USA; (J.K.L.); (E.K.); (V.O.); (M.V.N.)
- Department of Pathology, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD 21205-2196, USA
- Department of Neuroscience, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD 21205-2196, USA
- The Pathobiology Graduate Training Program, Johns Hopkins University School of Medicine, 558 Ross Building, 720 Rutland Avenue, Baltimore, MD 21205-2196, USA
| |
Collapse
|
28
|
Lou K, Liu S, Zhang F, Sun W, Su X, Bi W, Yin Q, Qiu Y, Zhang Z, Jing M, Ma S. The effect of hyperthyroidism on cognitive function, neuroinflammation, and necroptosis in APP/PS1 mice. J Transl Med 2023; 21:657. [PMID: 37740205 PMCID: PMC10517505 DOI: 10.1186/s12967-023-04511-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 09/06/2023] [Indexed: 09/24/2023] Open
Abstract
BACKGROUND Increasing evidence has linked the thyroid dysfunction to the pathogenesis of dementia. Evidence from clinical studies has demonstrated that hypothyroidism is related to an increased risk of dementia. But the association of hyperthyroidism with dementia is largely unknown. METHODS We used the adenovirus containing thyrotropin receptor (TSHR) amino acid residues 1-289 (Ad-TSHR289)-induced Graves' disease (GD) phenotype in Alzheimer's disease (AD) model mice (APP/PS1 mice) to evaluate the effect of hyperthyroidism on the cognitive function and β-amyloid (Aβ) accumulation. RESULTS GD mice exhibited a stable long-term hyperthyroidism and cognitive deficits. Single Cell RNA-sequencing analysis indicated that microglia function played a critical role in the pathophysiological processes in GD mice. Neuroinflammation and polarization of microglia (M1/M2 phenotype) and activated receptor-interacting serine/threonine protein kinase 3 (RIPK3)/mixed lineage kinase domain-like pseudo-kinase (MLKL)-mediated necroptosis contributed to the pathological process, including Aβ deposition and neuronal loss. RIPK3 inhibitor could inhibit GD-mediated Aβ accumulation and neuronal loss. CONCLUSIONS Our findings reveal that GD hyperthyroidism aggravates cognitive deficits in AD mice and induces Aβ deposition and neuronal loss by inducing neuroinflammation and RIPK3/MLKL-mediated necroptosis.
Collapse
Affiliation(s)
- Kai Lou
- Department of Endocrinology, Jinan Central Hospital Affiliated to Shandong First Medical University, Jinan, 250013, China
| | - Shudong Liu
- Department of Endocrinology, Shandong Rongjun General Hospital, Jinan, 250013, China
| | - Fengxia Zhang
- Department of Neurology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250011, China
| | - Wenxiu Sun
- Department of Nursing, Taishan Vocational College of Nursing, Taian, 271000, Shandong, China
| | - Xinhuan Su
- Department of Geriatrics Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China
| | - Wenkai Bi
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China
- Shandong Clinical Research Center of Diabetes and Metabolic Diseases, Jinan, 250021, Shandong, China
- Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, 250021, Shandong, China
- Shandong Prevention and Control Engineering Laboratory of Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
| | - Qingqing Yin
- Department of Geriatric Neurology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Yaxin Qiu
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China
- Shandong Clinical Research Center of Diabetes and Metabolic Diseases, Jinan, 250021, Shandong, China
- Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, 250021, Shandong, China
- Shandong Prevention and Control Engineering Laboratory of Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
| | - Zhenyuan Zhang
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China
- Shandong Clinical Research Center of Diabetes and Metabolic Diseases, Jinan, 250021, Shandong, China
- Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, 250021, Shandong, China
- Shandong Prevention and Control Engineering Laboratory of Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
| | - Mengzhe Jing
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China
- Shandong Clinical Research Center of Diabetes and Metabolic Diseases, Jinan, 250021, Shandong, China
- Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, 250021, Shandong, China
- Shandong Prevention and Control Engineering Laboratory of Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China
| | - Shizhan Ma
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China.
- Shandong Clinical Research Center of Diabetes and Metabolic Diseases, Jinan, 250021, Shandong, China.
- Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, 250021, Shandong, China.
- Shandong Prevention and Control Engineering Laboratory of Endocrine and Metabolic Diseases, Jinan, 250021, Shandong, China.
| |
Collapse
|
29
|
Veshchitskii AA, Kirik OV, Korzhevskii DE, Merkulyeva N. Development of neurochemical labeling in the intermediolateral nucleus of cats' spinal cord. Anat Rec (Hoboken) 2023; 306:2400-2410. [PMID: 35500068 DOI: 10.1002/ar.24943] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/29/2022] [Accepted: 04/15/2022] [Indexed: 08/11/2023]
Abstract
NeuN is a neuron-specific nuclear protein expressed in most mature neuronal cell types, with some exceptions. These exceptions are known mainly for the brain but not for the spinal cord or the spinal visceral networks for which only scarce information is available. One of the most defined visceral structures in the spinal cord is the sympathetic intermediolateral nucleus located within the thoracolumbar segments. We investigated the NeuN staining in the intermediolateral nucleus and compared it with the staining for two neurochemical markers of visceral neurons: nitric oxide synthase and calcium-binding protein calretinin in adult cats and in kittens aged 0, 14, and 35 days. A clear NeuN-immunonegativity was obtained for intermediolateral neurons labeled for nitric oxide synthase for both adult cats and kittens. In contrast, a matched immunopositivity for the NeuN and calretinin was obtained, showing an age-dependent degree of this colocalization, which was high in newborn kittens, decreased on postnatal 14 and 35 days and persisted at a moderate level up to adulthood. Perhaps our data displayed a heterogeneity of the intermediolateral neurons.
Collapse
Affiliation(s)
| | - Olga V Kirik
- Laboratory of Functional Morphology of Central and Peripheral Nervous System, Institute of Experimental Medicine RAS, Saint-Petersburg, Russia
| | - Dmitriy E Korzhevskii
- Laboratory of Functional Morphology of Central and Peripheral Nervous System, Institute of Experimental Medicine RAS, Saint-Petersburg, Russia
| | - Natalia Merkulyeva
- Laboratory of Neuromorphology, Pavlov Institute of Physiology RAS, Saint-Petersburg, Russia
| |
Collapse
|
30
|
Pandit M, Akhtar MN, Sundaram S, Sahoo S, Manjunath LE, Eswarappa SM. Termination codon readthrough of NNAT mRNA regulates calcium-mediated neuronal differentiation. J Biol Chem 2023; 299:105184. [PMID: 37611826 PMCID: PMC10506107 DOI: 10.1016/j.jbc.2023.105184] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 08/15/2023] [Accepted: 08/16/2023] [Indexed: 08/25/2023] Open
Abstract
Termination codon readthrough (TCR) is a process in which ribosomes continue to translate an mRNA beyond a stop codon generating a C-terminally extended protein isoform. Here, we demonstrate TCR in mammalian NNAT mRNA, which encodes NNAT, a proteolipid important for neuronal differentiation. This is a programmed event driven by cis-acting RNA sequences present immediately upstream and downstream of the canonical stop codon and is negatively regulated by NONO, an RNA-binding protein known to promote neuronal differentiation. Unlike the canonical isoform NNAT, we determined that the TCR product (NNATx) does not show detectable interaction with the sarco/endoplasmic reticulum Ca2+-ATPase isoform 2 Ca2+ pump, cannot increase cytoplasmic Ca2+ levels, and therefore does not enhance neuronal differentiation in Neuro-2a cells. Additionally, an antisense oligonucleotide that targets a region downstream of the canonical stop codon reduced TCR of NNAT and enhanced the differentiation of Neuro-2a cells to cholinergic neurons. Furthermore, NNATx-deficient Neuro-2a cells, generated using CRISPR-Cas9, showed increased cytoplasmic Ca2+ levels and enhanced neuronal differentiation. Overall, these results demonstrate regulation of neuronal differentiation by TCR of NNAT. Importantly, this process can be modulated using a synthetic antisense oligonucleotide.
Collapse
Affiliation(s)
- Madhuparna Pandit
- Department of Biochemistry, Indian Institute of Science, Bengaluru, Karnataka, India
| | - Md Noor Akhtar
- Department of Biochemistry, Indian Institute of Science, Bengaluru, Karnataka, India
| | - Susinder Sundaram
- Department of Biochemistry, Indian Institute of Science, Bengaluru, Karnataka, India
| | - Sarthak Sahoo
- Undergraduate Program, Indian Institute of Science, Bengaluru, India
| | - Lekha E Manjunath
- Department of Biochemistry, Indian Institute of Science, Bengaluru, Karnataka, India
| | - Sandeep M Eswarappa
- Department of Biochemistry, Indian Institute of Science, Bengaluru, Karnataka, India.
| |
Collapse
|
31
|
Unzueta-Larrinaga P, Barrena-Barbadillo R, Ibarra-Lecue I, Horrillo I, Villate A, Recio M, Meana JJ, Diez-Alarcia R, Mentxaka O, Segarra R, Etxebarria N, Callado LF, Urigüen L. Isolation and Differentiation of Neurons and Glial Cells from Olfactory Epithelium in Living Subjects. Mol Neurobiol 2023; 60:4472-4487. [PMID: 37118325 PMCID: PMC10293402 DOI: 10.1007/s12035-023-03363-2] [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: 01/17/2023] [Accepted: 04/19/2023] [Indexed: 04/30/2023]
Abstract
The study of psychiatric and neurological diseases requires the substrate in which the disorders occur, that is, the nervous tissue. Currently, several types of human bio-specimens are being used for research, including postmortem brains, cerebrospinal fluid, induced pluripotent stem (iPS) cells, and induced neuronal (iN) cells. However, these samples are far from providing a useful predictive, diagnostic, or prognostic biomarker. The olfactory epithelium is a region close to the brain that has received increased interest as a research tool for the study of brain mechanisms in complex neuropsychiatric and neurological diseases. The olfactory sensory neurons are replaced by neurogenesis throughout adult life from stem cells on the basement membrane. These stem cells are multipotent and can be propagated in neurospheres, proliferated in vitro and differentiated into multiple cell types including neurons and glia. For all these reasons, olfactory epithelium provides a unique resource for investigating neuronal molecular markers of neuropsychiatric and neurological diseases. Here, we describe the isolation and culture of human differentiated neurons and glial cells from olfactory epithelium of living subjects by an easy and non-invasive exfoliation method that may serve as a useful tool for the research in brain diseases.
Collapse
Affiliation(s)
- Paula Unzueta-Larrinaga
- Department of Pharmacology, University of the Basque Country, UPV/EHU, Leioa, Spain
- Biocruces Bizkaia Health Research Institute, Barakaldo, Spain
| | - Rocío Barrena-Barbadillo
- Biocruces Bizkaia Health Research Institute, Barakaldo, Spain
- Department of Nursery, University of the Basque Country UPV/EHU, Leioa, Spain
| | - Inés Ibarra-Lecue
- Department of Pharmacology, University of the Basque Country, UPV/EHU, Leioa, Spain
| | - Igor Horrillo
- Department of Pharmacology, University of the Basque Country, UPV/EHU, Leioa, Spain
- Biocruces Bizkaia Health Research Institute, Barakaldo, Spain
- Centro de Investigación Biomédica en Red de Salud Mental, CIBERSAM, Madrid, Spain
| | - Aitor Villate
- Department of Analytical Chemistry, University of the Basque Country UPV/EHU, Leioa, Spain
- PiE-UPV/EHU, Plentzia, ItsasEstazioa, Areatza Pasealekua, 48620, Plentzia, Spain
| | - Maria Recio
- Biocruces Bizkaia Health Research Institute, Barakaldo, Spain
- Department of Psychiatry, Cruces University Hospital, Barakaldo, Spain
| | - J Javier Meana
- Department of Pharmacology, University of the Basque Country, UPV/EHU, Leioa, Spain
- Biocruces Bizkaia Health Research Institute, Barakaldo, Spain
- Centro de Investigación Biomédica en Red de Salud Mental, CIBERSAM, Madrid, Spain
| | - Rebeca Diez-Alarcia
- Department of Pharmacology, University of the Basque Country, UPV/EHU, Leioa, Spain
- Biocruces Bizkaia Health Research Institute, Barakaldo, Spain
- Centro de Investigación Biomédica en Red de Salud Mental, CIBERSAM, Madrid, Spain
| | - Oihane Mentxaka
- Biocruces Bizkaia Health Research Institute, Barakaldo, Spain
- Department of Psychiatry, Cruces University Hospital, Barakaldo, Spain
- Department of Neurosciences, University of the Basque Country, UPV/EHU, Leioa, Spain
| | - Rafael Segarra
- Biocruces Bizkaia Health Research Institute, Barakaldo, Spain
- Centro de Investigación Biomédica en Red de Salud Mental, CIBERSAM, Madrid, Spain
- Department of Psychiatry, Cruces University Hospital, Barakaldo, Spain
- Department of Neurosciences, University of the Basque Country, UPV/EHU, Leioa, Spain
| | - Nestor Etxebarria
- Department of Analytical Chemistry, University of the Basque Country UPV/EHU, Leioa, Spain
- PiE-UPV/EHU, Plentzia, ItsasEstazioa, Areatza Pasealekua, 48620, Plentzia, Spain
| | - Luis F Callado
- Department of Pharmacology, University of the Basque Country, UPV/EHU, Leioa, Spain
- Biocruces Bizkaia Health Research Institute, Barakaldo, Spain
- Centro de Investigación Biomédica en Red de Salud Mental, CIBERSAM, Madrid, Spain
| | - Leyre Urigüen
- Department of Pharmacology, University of the Basque Country, UPV/EHU, Leioa, Spain.
- Biocruces Bizkaia Health Research Institute, Barakaldo, Spain.
- Centro de Investigación Biomédica en Red de Salud Mental, CIBERSAM, Madrid, Spain.
| |
Collapse
|
32
|
Yu K, Qiu Y, Shi Y, Yu X, Zhou B, Sun T, Wu Y, Xu S, Chen L, Shu Q, Huang L. Early environmental exposure to oxytetracycline in Danio rerio may contribute to neurobehavioral abnormalities in adult zebrafish. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 882:163482. [PMID: 37062325 DOI: 10.1016/j.scitotenv.2023.163482] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 04/02/2023] [Accepted: 04/09/2023] [Indexed: 06/01/2023]
Abstract
The common antibiotic oxytetracycline (OTC) is nowadays commonly found in natural aquatic environments. However, the underlying mechanisms of low-dose OTC exposure and its neurotoxic effects on aquatic animals remain unknown. In this study, we exposed zebrafish larvae to environmental concentrations of OTC in early life and performed neurobehavioral, 16S rRNA gene sequencing, and transcriptomic analyses. OTC exposure resulted in hyperactivity of larvae and a significant reduction in the number of neurons in the midbrain. The expression levels of 15 genes related to neural function changed. Additionally, the composition of 65 genera of the gut microbiota of larvae was altered, which may be one of the reasons for the abnormal neural development. We further studied the long-term outcomes among adult fish long after cessation of OTC exposure. OTC treatment caused adult fish to be depressive and impulsive, symbolizing bipolar disorder. Adult fish exposed to OTC had significantly fewer neurons and their gut bacteria composition did not recover 104 days after terminating OTC exposure. Finally, we analyzed the correlation between the gut microbiota of larvae, genes related to neural function, and metabolites of adult fish brain tissue. The results showed that the abundance of several members of the biome in larvae was related to the transcription levels of genes related to neural function, which were related to the metabolic levels in the adult brain. In conclusion, our study showed that early-life exposure to environmental concentrations of OTC can lead to persistent neurobehavioral abnormalities until adulthood through dysbiosis in the gut microbiota.
Collapse
Affiliation(s)
- Kan Yu
- Department of Infectious Diseases, the Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou 310052, China; School of Life Sciences, Fudan University, Shanghai 200438, China.
| | - Yushu Qiu
- Department of Infectious Diseases, the Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou 310052, China; Department of Infectious Diseases, Xinhua Children's Hospital, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China.
| | - Yi Shi
- Department of Infectious Diseases, the Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou 310052, China; Department of Infectious Diseases, Xinhua Children's Hospital, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China.
| | - Xiaogang Yu
- Ministry of Education and Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China.
| | - Baosong Zhou
- School of Data Science, Fudan University, Shanghai 200433, China.
| | - Tong Sun
- School of Life Sciences, Fudan University, Shanghai 200438, China.
| | - Yuhang Wu
- Department of Infectious Diseases, the Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou 310052, China; Department of Infectious Diseases, Xinhua Children's Hospital, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China.
| | - Shanshan Xu
- Department of Infectious Diseases, Xinhua Children's Hospital, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China.
| | - Lei Chen
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
| | - Qiang Shu
- National Clinical Research Center for Child Health, Children's Hospital, Zhejiang University School of Medicine, Hangzhou 310052, China.
| | - Lisu Huang
- Department of Infectious Diseases, the Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou 310052, China; Department of Infectious Diseases, Xinhua Children's Hospital, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China.
| |
Collapse
|
33
|
Pompeiano M, Colonnese MT. cFOS as a biomarker of activity maturation in the hippocampal formation. Front Neurosci 2023; 17:929461. [PMID: 37521697 PMCID: PMC10374841 DOI: 10.3389/fnins.2023.929461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 06/23/2023] [Indexed: 08/01/2023] Open
Abstract
We explored the potential for cFOS expression as a marker of functional development of "resting-state" waking activity in the extended network of the hippocampus and entorhinal cortex. We examined sleeping and awake mice at (P)ostnatal days 5, 9, 13, and 17 as well as in adulthood. We find that cFOS expression is state-dependent even at 5 days old, with reliable staining occurring only in the awake mice. Even during waking, cFOS expression was rare and weak at P5. The septal nuclei, entorhinal cortex layer (L)2, and anterodorsal thalamus were exceptional in that they had robust cFOS expression at P5 that was similar to or greater than in adulthood. Significant P5 expression was also observed in the dentate gyrus, entorhinal cortex L6, postsubiculum L4-6, ventral subiculum, supramammillary nucleus, and posterior hypothalamic nucleus. The expression in these regions grew stronger with age, and the expression in new regions was added progressively at P9 and P13 by which point the overall expression pattern in many regions was qualitatively similar to the adult. Six regions-CA1, dorsal subiculum, postsubiculum L2-3, reuniens nucleus, and perirhinal and postrhinal cortices-were very late developing, mostly achieving adult levels only after P17. Our findings support a number of developmental principles. First, early spontaneous activity patterns induced by muscle twitches during sleep do not induce robust cFOS expression in the extended hippocampal network. Second, the development of cFOS expression follows the progressive activation along the trisynaptic circuit, rather than birth date or cellular maturation. Third, we reveal components of the egocentric head-direction and theta-rhythm circuits as the earliest cFOS active circuits in the forebrain. Our results suggest that cFOS staining may provide a reliable and sensitive biomarker for hippocampal formation activity development, particularly in regard to the attainment of a normal waking state and synchronizing rhythms such as theta and gamma.
Collapse
Affiliation(s)
- Maria Pompeiano
- Department of Pharmacology and Physiology, The George Washington University, Washington, DC, United States
- Departamento de Bioingeniería, Universidad Carlos III de Madrid, Madrid, Spain
| | - Matthew T. Colonnese
- Department of Pharmacology and Physiology, The George Washington University, Washington, DC, United States
| |
Collapse
|
34
|
Makrygianni EA, Chrousos GP. Neural Progenitor Cells and the Hypothalamus. Cells 2023; 12:1822. [PMID: 37508487 PMCID: PMC10378393 DOI: 10.3390/cells12141822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 05/22/2023] [Accepted: 06/02/2023] [Indexed: 07/30/2023] Open
Abstract
Neural progenitor cells (NPCs) are multipotent neural stem cells (NSCs) capable of self-renewing and differentiating into neurons, astrocytes and oligodendrocytes. In the postnatal/adult brain, NPCs are primarily located in the subventricular zone (SVZ) of the lateral ventricles (LVs) and subgranular zone (SGZ) of the hippocampal dentate gyrus (DG). There is evidence that NPCs are also present in the postnatal/adult hypothalamus, a highly conserved brain region involved in the regulation of core homeostatic processes, such as feeding, metabolism, reproduction, neuroendocrine integration and autonomic output. In the rodent postnatal/adult hypothalamus, NPCs mainly comprise different subtypes of tanycytes lining the wall of the 3rd ventricle. In the postnatal/adult human hypothalamus, the neurogenic niche is constituted by tanycytes at the floor of the 3rd ventricle, ependymal cells and ribbon cells (showing a gap-and-ribbon organization similar to that in the SVZ), as well as suprachiasmatic cells. We speculate that in the postnatal/adult human hypothalamus, neurogenesis occurs in a highly complex, exquisitely sophisticated neurogenic niche consisting of at least four subniches; this structure has a key role in the regulation of extrahypothalamic neurogenesis, and hypothalamic and extrahypothalamic neural circuits, partly through the release of neurotransmitters, neuropeptides, extracellular vesicles (EVs) and non-coding RNAs (ncRNAs).
Collapse
Affiliation(s)
- Evanthia A Makrygianni
- University Research Institute of Maternal and Child Health & Precision Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - George P Chrousos
- University Research Institute of Maternal and Child Health & Precision Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
| |
Collapse
|
35
|
An JR, Liu JT, Gao XM, Wang QF, Sun GY, Su JN, Zhang C, Yu JX, Yang YF, Shi Y. Effects of liraglutide on astrocyte polarization and neuroinflammation in db/db mice: focus on iron overload and oxidative stress. Front Cell Neurosci 2023; 17:1136070. [PMID: 37323581 PMCID: PMC10267480 DOI: 10.3389/fncel.2023.1136070] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 05/03/2023] [Indexed: 06/17/2023] Open
Abstract
Neuroinflammation plays a crucial role in the occurrence and development of cognitive impairment in type 2 diabetes mellitus (T2DM), but the specific injury mechanism is not fully understood. Astrocyte polarization has attracted new attention and has been shown to be directly and indirectly involved in neuroinflammation. Liraglutide has been shown to have beneficial effects on neurons and astrocytes. However, the specific protection mechanism still needs to be clarified. In this study, we assessed the levels of neuroinflammation and A1/A2-responsive astrocytes in the hippocampus of db/db mice and examined their relationships with iron overload and oxidative stress. First, in db/db mice, liraglutide alleviated the disturbance of glucose and lipid metabolism, increased the postsynaptic density, regulated the expression of NeuN and BDNF, and partially restored impaired cognitive function. Second, liraglutide upregulated the expression of S100A10 and downregulated the expression of GFAP and C3, and decreased the secretion of IL-1β, IL-18, and TNF-α, which may confirm that it regulates the proliferation of reactive astrocytes and A1/A2 phenotypes polarize and attenuate neuroinflammation. In addition, liraglutide reduced iron deposition in the hippocampus by reducing the expression of TfR1 and DMT1 and increasing the expression of FPN1; at the same time, liraglutide by up-regulating the levels of SOD, GSH, and SOD2 expression, as well as downregulation of MDA levels and NOX2 and NOX4 expression to reduce oxidative stress and lipid peroxidation. The above may attenuate A1 astrocyte activation. This study preliminarily explored the effect of liraglutide on the activation of different astrocyte phenotypes and neuroinflammation in the hippocampus of a T2DM model and further revealed its intervention effect on cognitive impairment in diabetes. Focusing on the pathological consequences of astrocytes may have important implications for the treatment of diabetic cognitive impairment.
Collapse
Affiliation(s)
- Ji-Ren An
- Liaoning Key Laboratory of Chinese Medicine Combining Disease and Syndrome of Diabetes, Liaoning University of Traditional Chinese Medicine, Shenyang, China
| | - Jun-Tong Liu
- Liaoning Key Laboratory of Chinese Medicine Combining Disease and Syndrome of Diabetes, Liaoning University of Traditional Chinese Medicine, Shenyang, China
| | - Xiao-Meng Gao
- College of Integrative Chinese and Western Medicine, Hebei University of Chinese Medicine, Shijiazhuang, China
| | - Qing-Feng Wang
- Liaoning Key Laboratory of Chinese Medicine Combining Disease and Syndrome of Diabetes, Liaoning University of Traditional Chinese Medicine, Shenyang, China
| | - Gui-Yan Sun
- Liaoning Key Laboratory of Chinese Medicine Combining Disease and Syndrome of Diabetes, Liaoning University of Traditional Chinese Medicine, Shenyang, China
| | - Jia-Nan Su
- Liaoning Key Laboratory of Chinese Medicine Combining Disease and Syndrome of Diabetes, Liaoning University of Traditional Chinese Medicine, Shenyang, China
| | - Chi Zhang
- Liaoning Key Laboratory of Chinese Medicine Combining Disease and Syndrome of Diabetes, Liaoning University of Traditional Chinese Medicine, Shenyang, China
| | - Jia-Xiang Yu
- Liaoning Key Laboratory of Chinese Medicine Combining Disease and Syndrome of Diabetes, Liaoning University of Traditional Chinese Medicine, Shenyang, China
| | - Yu-Feng Yang
- Liaoning Key Laboratory of Chinese Medicine Combining Disease and Syndrome of Diabetes, Liaoning University of Traditional Chinese Medicine, Shenyang, China
| | - Yan Shi
- Liaoning Key Laboratory of Chinese Medicine Combining Disease and Syndrome of Diabetes, Liaoning University of Traditional Chinese Medicine, Shenyang, China
| |
Collapse
|
36
|
Babkina AS, Yadgarov MY, Lyubomudrov MA, Ostrova IV, Volkov AV, Kuzovlev AN, Grechko AV, Golubev AM. Morphologic Findings in the Cerebral Cortex in COVID-19: Association of Microglial Changes with Clinical and Demographic Variables. Biomedicines 2023; 11:biomedicines11051407. [PMID: 37239078 DOI: 10.3390/biomedicines11051407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/03/2023] [Accepted: 05/06/2023] [Indexed: 05/28/2023] Open
Abstract
Despite the enormous interest in COVID-19, there is no clear understanding of the mechanisms underlying the neurological symptoms in COVID-19. Microglia have been hypothesized to be a potential mediator of the neurological manifestations associated with COVID-19. In most existing studies to date, morphological changes in internal organs, including the brain, are considered in isolation from clinical data and defined as a consequence of COVID-19. We performed histological immunohistochemical (IHC) studies of brain autopsy materials of 18 patients who had died from COVID-19. We evaluated the relationship of microglial changes with the clinical and demographic characteristics of the patients. The results revealed neuronal alterations and circulatory disturbances. We found an inverse correlation between the integral density Iba-1 (microglia/macrophage-specific marker) IHC staining and the duration of the disease (R = -0.81, p = 0.001), which may indicate a reduced activity of microglia and do not exclude their damage in the long-term course of COVID-19. The integral density of Iba-1 IHC staining was not associated with other clinical and demographic factors. We observed a significantly higher number of microglial cells in close contact with neurons in female patients, which confirms gender differences in the course of the disease, indicating the need to study the disease from the standpoint of personalized medicine.
Collapse
Affiliation(s)
- Anastasiya S Babkina
- Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology, Moscow 107031, Russia
| | - Mikhail Ya Yadgarov
- Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology, Moscow 107031, Russia
| | - Maxim A Lyubomudrov
- Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology, Moscow 107031, Russia
| | - Irina V Ostrova
- Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology, Moscow 107031, Russia
| | - Alexey V Volkov
- Department of Pathological Anatomy, Institute of Medicine, Peoples' Friendship University of Russia, Moscow 117198, Russia
| | - Artem N Kuzovlev
- Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology, Moscow 107031, Russia
| | - Andrey V Grechko
- Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology, Moscow 107031, Russia
| | - Arkady M Golubev
- Federal Research and Clinical Center of Intensive Care Medicine and Rehabilitology, Moscow 107031, Russia
| |
Collapse
|
37
|
Huang R, Lin B, Tian H, Luo Q, Li Y. Prenatal Exposure to General Anesthesia Drug Esketamine Impaired Neurobehavior in Offspring. Cell Mol Neurobiol 2023:10.1007/s10571-023-01354-4. [PMID: 37119312 DOI: 10.1007/s10571-023-01354-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 04/19/2023] [Indexed: 05/01/2023]
Abstract
Prenatal exposure to anesthetics has raised increasing attention about the neuronal development in offspring. Animal models are usually used for investigation. As a new drug, esketamine is the s-isoform of ketamine and is twice as potent as the racemic ketamine with less reported adverse effects. Esketamine is currently being used and become more favorable in clinical anesthesia work, including surgeries during pregnancy, yet the effect on the offspring is unknown. The present study aimed to elucidate the effects of gestational administration of esketamine on neuronal development in offspring, using a rat model. Gestational day 14.5 pregnant rats received intravenous injections of esketamine. The postnatal day 0 (P0) hippocampus was digested and cultured in vitro to display the neuronal growth morphology. On Day 4 the in vitro experiments revealed a shorter axon length and fewer dendrite branches in the esketamine group. The results from the EdU- imaging kit showed decreased proliferative capacity in the subventricular zone (SVZ) and dentate gyrus (DG) in both P0 and P30 offspring brains in the esketamine group. Moreover, neurogenesis, neuron maturity and spine density were impaired, resulting in attenuated long-term potentiation (LTP). Compromised hippocampal function accounted for the deficits in neuronal cognition, memory and emotion. The evidence obtained suggests that the neurobehavioral deficit due to prenatal exposure to esketamine may be related to the decrease phosphorylation of CREB and abnormalities in N-methyl-D-aspartic acid receptor subunits. Taken together, these results demonstrate the negative effect of prenatal esketamine exposure on neuronal development in offspring rats. G14.5 esketamine administration influenced the neurobehavior of the offspring in adolescence. Poorer neuronal growth and reduced brain proliferative capacity in late gestation and juvenile pups resulted in impaired P30 neuronal plasticity and synaptic spines as well as abnormalities in NMDAR subunits. Attenuated LTP reflected compromised hippocampal function, as confirmed by behavioral tests of cognition, memory and emotions. This figure was completed on the website of Figdraw.
Collapse
Affiliation(s)
- Ronghua Huang
- Department of Anesthesiology, The First Affiliated Hospital of Jinan University, Number 613, The West of Huangpu Avenue, Tianhe Region, Guangzhou, 510630, Guangdong Province, China
| | - Bingbiao Lin
- Department of Urology, Kidney and Urology Center, Pelvic Floor Disorders Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, Shenzhen, 518000, Guangdong, China
| | - Hongyan Tian
- Department of Anesthesiology, The First Affiliated Hospital of Jinan University, Number 613, The West of Huangpu Avenue, Tianhe Region, Guangzhou, 510630, Guangdong Province, China
| | - Qichen Luo
- Department of Anesthesiology, The First Affiliated Hospital of Jinan University, Number 613, The West of Huangpu Avenue, Tianhe Region, Guangzhou, 510630, Guangdong Province, China
| | - Yalan Li
- Department of Anesthesiology, The First Affiliated Hospital of Jinan University, Number 613, The West of Huangpu Avenue, Tianhe Region, Guangzhou, 510630, Guangdong Province, China.
| |
Collapse
|
38
|
Sun Y, Kong J, Ge X, Mao M, Yu H, Wang Y. An Antisense Oligonucleotide-Loaded Blood-Brain Barrier Penetrable Nanoparticle Mediating Recruitment of Endogenous Neural Stem Cells for the Treatment of Parkinson's Disease. ACS NANO 2023; 17:4414-4432. [PMID: 36688425 DOI: 10.1021/acsnano.2c09752] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Parkinson's disease (PD) is a neurodegenerative disease characterized by the death of dopaminergic (DA) neurons and currently cannot be cured. One selected antisense oligonucleotide (ASO) is reported to be effective for the treatment of PD. However, ASO is usually intrathecally administered by lumbar puncture into the cerebral spinal fluid, through which the risks of highly invasive neurosurgery are the major concerns. In this study, ZAAM, an ASO-loaded, aptamer Apt 19S-conjugated, neural stem cell membrane (NSCM)-coated nanoparticle (NP), was developed for the targeted treatment of PD. NSCM facilitated the blood-brain barrier (BBB) penetration of NPs, and both NSCM and Apt 19S promoted the recruitment of the neural stem cells (NSCs) toward the PD site for DA neuron regeneration. The behavioral tests demonstrated that ZAAM highly improved the efficacy of ASO on PD by the targeted delivery of ASO and the recruitment of NSCs. This work is a heuristic report of (1) nonchemoattractant induced endogenous NSC recruitment, (2) NSCM-coated nanoparticles for the treatment of neurodegenerative diseases, and (3) systemic delivery of ASO for the treatment of PD. These findings provide insights into the development of biomimetic BBB penetrable drug carriers for precise diagnosis and therapy of central nervous system diseases.
Collapse
Affiliation(s)
- Yuting Sun
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou310058, P.R. China
| | - Jianglong Kong
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou310058, P.R. China
| | - Xiaohan Ge
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou310058, P.R. China
| | - Meiru Mao
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou310058, P.R. China
| | - Hongrui Yu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou310058, P.R. China
| | - Yi Wang
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou310058, P.R. China
- Ningbo Research Institute, Zhejiang University, Ningbo315100, P.R. China
| |
Collapse
|
39
|
Zierath D, Mizuno S, Barker-Haliski M. Frontline Sodium Channel-Blocking Antiseizure Medicine Use Promotes Future Onset of Drug-Resistant Chronic Seizures. Int J Mol Sci 2023; 24:4848. [PMID: 36902275 PMCID: PMC10003379 DOI: 10.3390/ijms24054848] [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: 02/07/2023] [Revised: 02/25/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023] Open
Abstract
The mechanisms of treatment-resistant epilepsy remain unclear. We have previously shown that frontline administration of therapeutic doses of lamotrigine (LTG), which preferentially inhibits the fast-inactivation state of sodium channels, during corneal kindling of mice promotes cross-resistance to several other antiseizure medicines (ASMs). However, whether this phenomenon extends to monotherapy with ASMs that stabilize the slow inactivation state of sodium channels is unknown. Therefore, this study assessed whether lacosamide (LCM) monotherapy during corneal kindling would promote future development of drug-resistant focal seizures in mice. Male CF-1 mice (n = 40/group; 18-25 g) were administered an anticonvulsant dose of LCM (4.5 mg/kg, i.p.), LTG (8.5 mg/kg, i.p.), or vehicle (0.5% methylcellulose) twice daily for two weeks during kindling. A subset of mice (n = 10/group) were euthanized one day after kindling for immunohistochemical assessment of astrogliosis, neurogenesis, and neuropathology. The dose-related antiseizure efficacy of distinct ASMs, including LTG, LCM, carbamazepine, levetiracetam, gabapentin, perampanel, valproic acid, phenobarbital, and topiramate, was then assessed in the remaining kindled mice. Neither LCM nor LTG administration prevented kindling: 29/39 vehicle-exposed mice were kindled; 33/40 LTG-exposed mice were kindled; and 31/40 LCM-exposed mice were kindled. Mice administered LCM or LTG during kindling became resistant to escalating doses of LCM, LTG, and carbamazepine. Perampanel, valproic acid, and phenobarbital were less potent in LTG- and LCM-kindled mice, whereas levetiracetam and gabapentin retained equivalent potency across groups. Notable differences in reactive gliosis and neurogenesis were also appreciated. This study indicates that early, repeated administration of sodium channel-blocking ASMs, regardless of inactivation state preference, promotes pharmacoresistant chronic seizures. Inappropriate ASM monotherapy in newly diagnosed epilepsy may thus be one driver of future drug resistance, with resistance being highly ASM class specific.
Collapse
Affiliation(s)
| | | | - Melissa Barker-Haliski
- Department of Pharmacy, School of Pharmacy, University of Washington, Seattle, WA 98195, USA
| |
Collapse
|
40
|
Neurod1 mediates the reprogramming of NG2 glial into neurons in vitro. Gene Expr Patterns 2023; 47:119305. [PMID: 36682427 DOI: 10.1016/j.gep.2023.119305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 12/31/2022] [Accepted: 01/14/2023] [Indexed: 01/21/2023]
Abstract
Neuronal defect and loss are the main pathological processes of many central nervous system diseases. Cellular reprogramming is a promising method to supplement lost neurons. However, study on cellular reprogramming is still limited and its mechanism remains unclear. Herein, the effect of Neurod1 expression on differentiation of NG2 glia into neurons was investigated. In this study, we successfully isolated NG2 glial cells from mice prior to identification with immunofluorescence. Afterwards, AAV-Neurod1 virus was used to construct Neurod1 overexpression vectors in NG2 glia. Later, we detected neuronal markers expression with immunofluorescence and real time quantitative polymerase-chain reaction (qRT-PCR). Besides, expression of MAPK-signaling-pathway-related proteins were detected by western blotting technique. Through immunofluorescence and qRT-PCR techniques, we observed that Neurod1 overexpression contributed to NG2 cells differentiated into neurons. Further experiments also showed that Neurod1 overexpression induced the activation of MAPK pathway, but PD98059 (a selective inhibitor of MAPK pathway) partly inhibited the neuronal differentiation induced by Neurod1 overexpression. These findings suggest that Neurod1 could promote NG2 glia cells differentiating into neurons, wherein the mechanism under the differentiation is related to activation of MAPK pathway.
Collapse
|
41
|
Zhang Y, Zhou Q, Lu L, Su Y, Shi W, Zhang H, Liu R, Pu Y, Yin L. Copper Induces Cognitive Impairment in Mice via Modulation of Cuproptosis and CREB Signaling. Nutrients 2023; 15:nu15040972. [PMID: 36839332 PMCID: PMC9958748 DOI: 10.3390/nu15040972] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 01/29/2023] [Accepted: 02/01/2023] [Indexed: 02/18/2023] Open
Abstract
It has been reported that disordered Cu metabolism is associated with several neurodegenerative diseases, including Alzheimer's disease (AD) and Parkinson's disease (PD). However, the underlying mechanism is still unclear. In this study, 4-week-old male mice were exposed to Cu by free-drinking water for three months. Then, the effects of Cu on cognitive functions in mice were tested by Morris water maze tests, and the potential mechanisms were investigated by the ELISA, immunochemistry, TUNEL, and Western blot tests. It was found that Cu exacerbates learning and memory impairment, and leads to Cu-overload in the brain and urine of mice. The results showed that Cu induces neuronal degeneration and oxidative damage, promotes the expression of apoptosis-related protein Bax, cuproptosis-related proteins FDX1 and DLAT and the proteotoxic stress marker HSP70, and decreases Fe-S cluster proteins. In addition, Cu affects the pre-synaptic and post-synaptic regulatory mechanisms through inhibiting the expression of PSD-95 and SYP. Cu also suppresses phosphorylation levels in CREB and decreases the expression of BDNF and TrkB in the mouse hippocampus. In conclusion, Cu might mediate cuproptosis, damage synaptic plasticity and inhibit the CREB/BDNF pathway to cause cognitive dysfunction in mice.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | - Lihong Yin
- Correspondence: ; Tel.: +86-025-8327-2583; Fax: +86-025-8327-2583
| |
Collapse
|
42
|
Tang H, Zhang X, Hao X, Dou H, Zou C, Zhou Y, Li B, Yue H, Wang D, Wang Y, Yang C, Fu J. Hepatocyte growth factor-modified hair follicle stem cells ameliorate cerebral ischemia/reperfusion injury in rats. Stem Cell Res Ther 2023; 14:25. [PMID: 36782269 PMCID: PMC9926795 DOI: 10.1186/s13287-023-03251-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 08/22/2022] [Indexed: 02/15/2023] Open
Abstract
BACKGROUND Hair follicle stem cells (HFSCs) are considered as a promising cell type in the stem cell transplantation treatment of neurological diseases because of their rich sources, easy access, and the same ectoderm source as the nervous system. Hepatocyte growth factor (HGF) is a pleiotropic cytokine that shows neuroprotective function in ischemic stroke. Here we assessed the therapeutic effects of HFSCs on ischemic stroke injury and the synthetic effect of HGF along with HFSCs. METHODS Rat HFSCs were intravenously transplanted into a middle cerebral artery ischemia/reperfusion (I/R) rat model. Neurological scoring and TTC staining were performed to assess the benefits of HFSC transplantation. Inflammatory cytokines, blood-brain barrier integrity and angiogenesis within penumbra were estimated by Western blot and immunohistochemistry. The differentiation of HFSCs was detected by immunofluorescence method 2 weeks after transplantation. RESULTS HFSC transplantation could significantly inhibit the activation of microglia, improve the integrity of blood-brain barrier and reduce brain edema. Moreover, the number of surviving neurons and microvessels density in the penumbra were upregulated by HFSC transplantation, leading to better neurological score. The combination of HFSCs and HGF could significantly improve the therapeutic benefit. CONCLUSION Our results indicate for the first time that HGF modified HFSCs can reduce I/R injury and promote the neurological recovery by inhibiting inflammatory response, protecting blood-brain barrier and promoting angiogenesis.
Collapse
Affiliation(s)
- Hao Tang
- grid.412463.60000 0004 1762 6325Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, No.246 Xuefu Road, Nangang District, Harbin, 150086 Heilongjiang China
| | - Xuemei Zhang
- grid.412463.60000 0004 1762 6325Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, No.246 Xuefu Road, Nangang District, Harbin, 150086 Heilongjiang China
| | - Xiaojun Hao
- grid.412463.60000 0004 1762 6325Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, No.246 Xuefu Road, Nangang District, Harbin, 150086 Heilongjiang China
| | - Haitong Dou
- grid.412463.60000 0004 1762 6325Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, No.246 Xuefu Road, Nangang District, Harbin, 150086 Heilongjiang China
| | - Chendan Zou
- grid.410736.70000 0001 2204 9268Department of Biochemistry and Molecular Biology, Harbin Medical University, No.157 Baojian Road, Nangang District, Harbin, 150086 Heilongjiang China
| | - Yinglian Zhou
- grid.412463.60000 0004 1762 6325Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, No.246 Xuefu Road, Nangang District, Harbin, 150086 Heilongjiang China
| | - Bing Li
- grid.412463.60000 0004 1762 6325Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, No.246 Xuefu Road, Nangang District, Harbin, 150086 Heilongjiang China
| | - Hui Yue
- grid.412463.60000 0004 1762 6325Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, No.246 Xuefu Road, Nangang District, Harbin, 150086 Heilongjiang China
| | - Duo Wang
- grid.412463.60000 0004 1762 6325Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, No.246 Xuefu Road, Nangang District, Harbin, 150086 Heilongjiang China
| | - Yifei Wang
- grid.412463.60000 0004 1762 6325Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, No.246 Xuefu Road, Nangang District, Harbin, 150086 Heilongjiang China
| | - Chunxiao Yang
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, No.246 Xuefu Road, Nangang District, Harbin, 150086, Heilongjiang, China.
| | - Jin Fu
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, No.246 Xuefu Road, Nangang District, Harbin, 150086, Heilongjiang, China.
| |
Collapse
|
43
|
Wiseman JA, Dragunow M, I-H Park T. Cell Type-Specific Nuclei Markers: The Need for Human Brain Research to Go Nuclear. Neuroscientist 2023; 29:41-61. [PMID: 34459315 DOI: 10.1177/10738584211037351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Identifying and interrogating cell type-specific populations within the heterogeneous milieu of the human brain is paramount to resolving the processes of normal brain homeostasis and the pathogenesis of neurological disorders. While brain cell type-specific markers are well established, most are localized on cellular membranes or within the cytoplasm, with limited literature describing those found in the nucleus. Due to the complex cytoarchitecture of the human brain, immunohistochemical studies require well-defined cell-specific nuclear markers for more precise and efficient quantification of the cellular populations. Furthermore, efficient nuclear markers are required for cell type-specific purification and transcriptomic interrogation of archived human brain tissue through nuclei isolation-based RNA sequencing. To sate the growing demand for robust cell type-specific nuclear markers, we thought it prudent to comprehensively review the current literature to identify and consolidate a novel series of robust cell type-specific nuclear markers that can assist researchers across a range of neuroscientific disciplines. The following review article collates and discusses several key and prospective cell type-specific nuclei markers for each of the major human brain cell types; it then concludes by discussing the potential applications of cell type-specific nuclear workflows and the power of nuclear-based neuroscientific research.
Collapse
Affiliation(s)
- James A Wiseman
- Department of Pharmacology, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand.,Department of Anatomy and Medical Imaging, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Mike Dragunow
- Department of Pharmacology, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand.,Neurosurgical Research Unit, The Centre for Brain Research, University of Auckland, Auckland, New Zealand.,Hugh Green Biobank, The Centre for Brain Research, University of Auckland, Auckland, New Zealand
| | - Thomas I-H Park
- Department of Pharmacology, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand.,Department of Anatomy and Medical Imaging, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| |
Collapse
|
44
|
Protective Effects of Early Caffeine Administration in Hyperoxia-Induced Neurotoxicity in the Juvenile Rat. Antioxidants (Basel) 2023; 12:antiox12020295. [PMID: 36829854 PMCID: PMC9952771 DOI: 10.3390/antiox12020295] [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: 12/19/2022] [Revised: 01/12/2023] [Accepted: 01/24/2023] [Indexed: 01/31/2023] Open
Abstract
High-risk preterm infants are affected by a higher incidence of cognitive developmental deficits due to the unavoidable risk factor of oxygen toxicity. Caffeine is known to have a protective effect in preventing bronchopulmonary dysplasia associated with improved neurologic outcomes, although very early initiation of therapy is controversial. In this study, we used newborn rats in an oxygen injury model to test the hypothesis that near-birth caffeine administration modulates neuronal maturation and differentiation in the hippocampus of the developing brain. For this purpose, newborn Wistar rats were exposed to 21% or 80% oxygen on the day of birth for 3 or 5 days and treated with vehicle or caffeine (10 mg/kg/48 h). Postnatal exposure to 80% oxygen resulted in a drastic reduction of associated neuronal mediators for radial glia, mitotic/postmitotic neurons, and impaired cell-cycle regulation, predominantly persistent even after recovery to room air until postnatal day 15. Systemic caffeine administration significantly counteracted the effects of oxygen insult on neuronal maturation in the hippocampus. Interestingly, under normoxia, caffeine inhibited the transcription of neuronal mediators of maturing and mature neurons. The early administration of caffeine modulated hyperoxia-induced decreased neurogenesis in the hippocampus and showed neuroprotective properties in the neonatal rat oxygen toxicity model.
Collapse
|
45
|
Effects of the genetic knockout of the β-1,3-galactosyltransferase 2 on spatial learning and neurons in the adult mouse hippocampus and somatosensory cortex. Neuroreport 2023; 34:46-55. [PMID: 36504040 DOI: 10.1097/wnr.0000000000001857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVE Glycosyltransferases contribute to the biosynthesis of glycoproteins, proteoglycans and glycolipids and play essential roles in various processes in the brain, such as learning and memory, brain development, neuronal survival and neurodegeneration. β-1,3-galactosyltransferase 2 (B3galt2) belongs to the β-1,3-galactosyltransferase gene family and is highly expressed in the brain. Recent studies have indicated that B3galt2 plays a vital role in ischemic stroke through several signaling pathways in a mouse model. However, the function of B3galt2 in the brain remains poorly understood. METHODS The genotypes of mice were determined by PCR. To verify B3galt2 expression in an adult mouse brain, X-gal staining was performed in 6-month-old B3galt2 heterozygous (B3galt2+/-) mice. Using adult B3galt2 homozygous (B3galt2-/-), heterozygous and wild-type (WT) littermates, spatial learning and memory were determined by the Morris Water Maze test, and neurotoxicity and synaptic plasticity were examined by immunofluorescence. RESULTS B3galt2 was highly expressed in the adult mouse hippocampus and cortex, especially in the hippocampal dentate gyrus. Compared to that of WT mice, the spatial learning ability of adult B3galt2-/- mice was impaired. B3galt2 mutations also caused neuronal loss and synaptic dysfunction in the hippocampus and somatosensory cortex, and these changes were more obvious in B3galt2-/- mice than in B3galt2+/- mice. CONCLUSIONS The findings indicate that B3galt2 plays an important role in cognitive function, neuronal maintenance and synaptic plasticity in the adult mouse brain. This study suggests that genetic and/or pharmacological manipulation of glycosyltransferases may be a novel strategy for elucidating the mechanism of and managing various brain disorders.
Collapse
|
46
|
Li D, Qin Q, Xia Y, Cheng S, Zhang J, Duan X, Qin X, Tian X, Mao L, Qiu J, Jiang X, Zou Z, Chen C. Heterozygous disruption of beclin 1 alleviates neurotoxicity induced by sub-chronic exposure of arsenite in mice. Neurotoxicology 2023; 94:11-23. [PMID: 36374725 DOI: 10.1016/j.neuro.2022.10.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 10/25/2022] [Accepted: 10/25/2022] [Indexed: 11/11/2022]
Abstract
Arsenite is a well-documented neurotoxicant that widely exists in the environment. However, the detailed mechanisms of arsenite neurotoxicity are not fully clarified. Autophagy has been reported to be involved in many neurological problems induced by arsenite. Since beclin 1 is an essential mediator of autophagy, we herein used both adult wild-type (beclin 1+/+) and heterozygous disruption of beclin 1 (beclin 1+/-) mice for chronic administration of 50 mg/L arsenite via drinking water for 3 months. Our results demonstrated that exposure of arsenite caused the working memory deficit, anxiety-like behavior and motor coordination disorder in beclin 1+/+ mice, accompanied with pathological changes in morphology and electrophysiology in the cortical tissues. This treatment of arsenite significantly reduced the number of neuronal cells and induced microglia activation and synaptic transmission disorders in the wild-type mice as compared with vehicle controls. Intriguingly, by using beclin 1+/- mice, we found that heterozygous disruption of beclin 1 profoundly attenuated these neurotoxic effects induced by arsenite, mainly manifested by improvements in the neurobehavioral impairments, abnormal electrophysiologic alterations as well as dysregulation of synaptic transmission. These findings together indicate that regulation of autophagy via beclin 1 would be a potential strategy for treatment against arsenite neurotoxicity.
Collapse
Affiliation(s)
- Danyang Li
- Department of Occupational and Environmental Health, School of Public Health, Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Qizhong Qin
- Center of Experimental Teaching for Public Health, Experimental Teaching and Management Center, Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Yinyin Xia
- Department of Occupational and Environmental Health, School of Public Health, Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Shuqun Cheng
- Department of Occupational and Environmental Health, School of Public Health, Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Jun Zhang
- Molecular Biology Laboratory of Respiratory Disease, Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Xinhao Duan
- Department of Health Laboratory Technology, School of Public Health, Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Xia Qin
- Department of Pharmacy, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Xin Tian
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Lejiao Mao
- Molecular Biology Laboratory of Respiratory Disease, Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Jingfu Qiu
- Department of Health Laboratory Technology, School of Public Health, Chongqing Medical University, Chongqing 400016, People's Republic of China; Research Center for Environment and Human Health, School of Public Health, Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Xuejun Jiang
- Center of Experimental Teaching for Public Health, Experimental Teaching and Management Center, Chongqing Medical University, Chongqing 400016, People's Republic of China; Research Center for Environment and Human Health, School of Public Health, Chongqing Medical University, Chongqing 400016, People's Republic of China.
| | - Zhen Zou
- Molecular Biology Laboratory of Respiratory Disease, Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, People's Republic of China; Research Center for Environment and Human Health, School of Public Health, Chongqing Medical University, Chongqing 400016, People's Republic of China.
| | - Chengzhi Chen
- Department of Occupational and Environmental Health, School of Public Health, Chongqing Medical University, Chongqing 400016, People's Republic of China; Research Center for Environment and Human Health, School of Public Health, Chongqing Medical University, Chongqing 400016, People's Republic of China.
| |
Collapse
|
47
|
Martens GA, Folkow LP, Burmester T, Geßner C. Elevated antioxidant defence in the brain of deep-diving pinnipeds. Front Physiol 2022; 13:1064476. [PMID: 36589435 PMCID: PMC9800987 DOI: 10.3389/fphys.2022.1064476] [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: 10/08/2022] [Accepted: 12/05/2022] [Indexed: 12/23/2022] Open
Abstract
While foraging, marine mammals undertake repetitive diving bouts. When the animal surfaces, reperfusion makes oxygen readily available for the electron transport chain, which leads to increased production of reactive oxygen species and risk of oxidative damage. In blood and several tissues, such as heart, lung, muscle and kidney, marine mammals generally exhibit an elevated antioxidant defence. However, the brain, whose functional integrity is critical to survival, has received little attention. We previously observed an enhanced expression of several antioxidant genes in cortical neurons of hooded seals (Cystophora cristata). Here, we studied antioxidant gene expression and enzymatic activity in the visual cortex, cerebellum and hippocampus of harp seals (Pagophilus groenlandicus) and hooded seals. Moreover, we tested several genes for positive selection. We found that antioxidants in the first line of defence, such as superoxide dismutase (SOD), glutathione peroxidase (GPX) and glutathione (GSH) were constitutively enhanced in the seal brain compared to mice (Mus musculus), whereas the glutaredoxin and thioredoxin systems were not. Possibly, the activity of the latter systems is stress-induced rather than constitutively elevated. Further, some, but not all members, of the glutathione-s-transferase (GST) family appear more highly expressed. We found no signatures of positive selection, indicating that sequence and function of the studied antioxidants are conserved in pinnipeds.
Collapse
Affiliation(s)
- Gerrit A. Martens
- Institute of Cell and Systems Biology of Animals, University of Hamburg, Hamburg, Germany
| | - Lars P. Folkow
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, Norway
| | - Thorsten Burmester
- Institute of Cell and Systems Biology of Animals, University of Hamburg, Hamburg, Germany
| | - Cornelia Geßner
- Institute of Cell and Systems Biology of Animals, University of Hamburg, Hamburg, Germany,*Correspondence: Cornelia Geßner,
| |
Collapse
|
48
|
Spennato M, Roggero OM, Varriale S, Asaro F, Cortesi A, Kašpar J, Tongiorgi E, Pezzella C, Gardossi L. Neuroprotective Properties of Cardoon Leaves Extracts against Neurodevelopmental Deficits in an In Vitro Model of Rett Syndrome Depend on the Extraction Method and Harvest Time. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248772. [PMID: 36557905 PMCID: PMC9783035 DOI: 10.3390/molecules27248772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 12/06/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022]
Abstract
This study investigates the bioactive properties of different extracts of cardoon leaves in rescuing neuronal development arrest in an in vitro model of Rett syndrome (RTT). Samples were obtained from plants harvested at different maturity stages and extracted with two different methodologies, namely Naviglio® and supercritical carbon dioxide (scCO2). While scCO2 extracts more hydrophobic fractions, the Naviglio® method extracts phenolic compounds and less hydrophobic components. Only the scCO2 cardoon leaves extract obtained from plants harvested in spring induced a significant rescue of neuronal atrophy in RTT neurons, while the scCO2 extract from the autumn harvest stimulated dendrite outgrowth in Wild-Type (WT) neurons. The scCO2 extracts were the richest in squalene, 3ß-taraxerol and lupeol, with concentrations in autumn harvest doubling those in spring harvest. The Naviglio® extract was rich in cynaropicrin and exerted a toxic effect at 20 µM on both WT and RTT neurons. When cynaropicrin, squalene, lupeol and 3ß-taraxerol were tested individually, no positive effect was observed, whereas a significant neurotoxicity of cynaropicrin and lupeol was evident. In conclusion, cardoon leaves extracts with high content of hydrophobic bioactive molecules and low cynaropicrin and lupeol concentrations have pharmacological potential to stimulate neuronal development in RTT and WT neurons in vitro.
Collapse
Affiliation(s)
- Mariachiara Spennato
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Ottavia Maria Roggero
- Department of Life Sciences, University of Trieste, Via L. Giorgieri 5, 34127 Trieste, Italy
| | - Simona Varriale
- Department of Chemical Sciences, University Federico II of Naples, Via Cinthia, 4, 80126 Napoli, Italy
| | - Fioretta Asaro
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Angelo Cortesi
- Department of Engineering and Architecture, University of Trieste, Via Alfonso Valerio 6/A, 34127 Trieste, Italy
| | - Jan Kašpar
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Enrico Tongiorgi
- Department of Life Sciences, University of Trieste, Via L. Giorgieri 5, 34127 Trieste, Italy
| | - Cinzia Pezzella
- Department of Chemical Sciences, University Federico II of Naples, Via Cinthia, 4, 80126 Napoli, Italy
| | - Lucia Gardossi
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
- Correspondence:
| |
Collapse
|
49
|
Chen P, Lin MH, Li YX, Huang ZJ, Rong YY, Lin QS, Ye ZC. Bexarotene enhances astrocyte phagocytosis via ABCA1-mediated pathways in a mouse model of subarachnoid hemorrhage. Exp Neurol 2022; 358:114228. [PMID: 36108713 DOI: 10.1016/j.expneurol.2022.114228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/31/2022] [Accepted: 09/08/2022] [Indexed: 11/04/2022]
Abstract
BACKGROUND AND PURPOSE Enhancing phagocytosis can facilitate the removal of inflammatory molecules, limit the toxicity of dead cells and debris, and promote recovery after brain injury. In this study, we aimed to explore the role of bexarotene (Bex), a retinoid X receptor (RXR) agonist, in promoting astrocyte phagocytosis and neurobehavioral recovery after subarachnoid hemorrhage (SAH). METHODS Mice SAH model was induced by pre-chiasmatic injection of blood. Modified Garcia score, novel object recognition, rotarod test, and Morris water maze were performed to assess neurological function. Immunofluorescence and electron microscopy were used to evaluate astrocyte phagocytosis in vivo. In addition, ABCA1/MEGF10&GULP1, the primary astrocyte phagocytosis pathway, were stimulated by Bex or suppressed by HX531 (a RXR antagonist) to evaluate their impacts on astrocyte phagocytosis and neurological recovery. RESULTS Astrocytes phagocytosis of blood components were observed in mice after SAH induction, which is further increased by Bex treatment. Bex dramatically attenuated neuroinflammation, reduced brain edema, improved early neurological performance and promoted neurocognitive recovery. Meanwhile, Bex decreased neurotoxic reactive astrocytes and preserved neurogenesis after SAH. Bex increased the expression of astrocyte phagocytosis-related proteins ABCA1, MEGF10, and GULP1. Bex also increased the lysosomal processing of engulfed blood components in astrocytes. Moreover, Bex significantly promoted astrocytes to phagocytize debris in vitro by increasing the expression of ABCA1, MEGF10 and GULP1, while HX531 inhibited astrocyte phagocytosis and decreased these protein levels. CONCLUSIONS Bex enhanced astrocyte phagocytosis through the ABCA1-mediated pathways, and promoted neurobehavior recovery in mice after SAH induction.
Collapse
Affiliation(s)
- Ping Chen
- Department of Anesthesiology, Anesthesiology Research Institute, the First Affiliated Hospital, Fujian Medical University, Fuzhou, Fujian, China; Fujian Provincial Key Laboratory of Brain Aging and Neurodegenerative Diseases, The School of Basic Medical Sciences, Fujian Medical University, China
| | - Mou-Hui Lin
- Fujian Provincial Key Laboratory of Brain Aging and Neurodegenerative Diseases, The School of Basic Medical Sciences, Fujian Medical University, China
| | - Yu-Xi Li
- Fujian Provincial Key Laboratory of Brain Aging and Neurodegenerative Diseases, The School of Basic Medical Sciences, Fujian Medical University, China
| | - Zhi-Jie Huang
- Fujian Provincial Key Laboratory of Brain Aging and Neurodegenerative Diseases, The School of Basic Medical Sciences, Fujian Medical University, China
| | - Yu-You Rong
- Fujian Provincial Key Laboratory of Brain Aging and Neurodegenerative Diseases, The School of Basic Medical Sciences, Fujian Medical University, China
| | - Qing-Song Lin
- Department of Neurosurgery, Neurosurgery Research Institute, the First Affiliated Hospital, Fujian Medical University, Fuzhou, Fujian, China.
| | - Zu-Cheng Ye
- Fujian Provincial Key Laboratory of Brain Aging and Neurodegenerative Diseases, The School of Basic Medical Sciences, Fujian Medical University, China.
| |
Collapse
|
50
|
Kofoed RH, Dibia CL, Noseworthy K, Xhima K, Vacaresse N, Hynynen K, Aubert I. Efficacy of gene delivery to the brain using AAV and ultrasound depends on serotypes and brain areas. J Control Release 2022; 351:667-680. [DOI: 10.1016/j.jconrel.2022.09.048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 09/18/2022] [Accepted: 09/23/2022] [Indexed: 02/01/2023]
|