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Li Z, Yu S, Li L, Zhou C, Wang L, Tang S, Gu N, Zhang Z, Huang Z, Chen H, Tang W, Wang Y, Yang X, Sun X, Yan J. TREM2 alleviates white matter injury after traumatic brain injury in mice might be mediated by regulation of DHCR24/LXR pathway in microglia. Clin Transl Med 2024; 14:e1665. [PMID: 38649789 PMCID: PMC11035381 DOI: 10.1002/ctm2.1665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 03/26/2024] [Accepted: 04/04/2024] [Indexed: 04/25/2024] Open
Abstract
BACKGROUND White matter injury (WMI) is an important pathological process after traumatic brain injury (TBI). The correlation between white matter functions and the myeloid cells expressing triggering receptor-2 (TREM2) has been convincingly demonstrated. Moreover, a recent study revealed that microglial sterol metabolism is crucial for early remyelination after demyelinating diseases. However, the potential roles of TREM2 expression and microglial sterol metabolism in WMI after TBI have not yet been explored. METHODS Controlled cortical injury was induced in both wild-type (WT) and TREM2 depletion (TREM2 KO) mice to simulate clinical TBI. COG1410 was used to upregulate TREM2, while PLX5622 and GSK2033 were used to deplete microglia and inhibit the liver X receptor (LXR), respectively. Immunofluorescence, Luxol fast blue staining, magnetic resonance imaging, transmission electron microscopy, and oil red O staining were employed to assess WMI after TBI. Neurological behaviour tests and electrophysiological recordings were utilized to evaluate cognitive functions following TBI. Microglial cell sorting and transcriptomic sequencing were utilized to identify alterations in microglial sterol metabolism-related genes, while western blot was conducted to validate the findings. RESULTS TREM2 expressed highest at 3 days post-TBI and was predominantly localized to microglial cells within the white matter. Depletion of TREM2 worsened aberrant neurological behaviours, and this phenomenon was mediated by the exacerbation of WMI, reduced renewal of oligodendrocytes, and impaired phagocytosis ability of microglia after TBI. Subsequently, the upregulation of TREM2 alleviated WMI, promoted oligodendrocyte regeneration, and ultimately facilitated the recovery of neurological behaviours after TBI. Finally, the expression of DHCR24 increased in TREM2 KO mice after TBI. Interestingly, TREM2 inhibited DHCR24 and upregulated members of the LXR pathway. Moreover, LXR inhibition could partially reverse the effects of TREM2 upregulation on electrophysiological activities. CONCLUSIONS We demonstrate that TREM2 has the potential to alleviate WMI following TBI, possibly through the DHCR24/LXR pathway in microglia.
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Affiliation(s)
- Zhao Li
- Department of NeurosurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
- Emergency DepartmentChengdu First People's HospitalChengduChina
| | - Shenghui Yu
- Emergency DepartmentChengdu First People's HospitalChengduChina
| | - Lin Li
- Department of NeurosurgeryChongqing University Cancer HospitalChongqingChina
| | - Chao Zhou
- Emergency DepartmentChengdu First People's HospitalChengduChina
| | - Lin Wang
- Department of NeurosurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
- Department of NeurosurgeryNanchong Central HospitalThe Second Clinical Medical College of North Sichuan Medical CollegeNanchongChina
| | - Shuang Tang
- Department of NeurosurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
- Department of NeurosurgerySuining Central HospitalSuiningChina
| | - Nina Gu
- Department of NeurosurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Zhaosi Zhang
- Department of NeurosurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Zhijian Huang
- Department of NeurosurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Hong Chen
- Department of NeurosurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Wei Tang
- Department of NeurosurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Yingwen Wang
- Department of NeurosurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Xiaomin Yang
- Department of NeurosurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Xiaochuan Sun
- Department of NeurosurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Jin Yan
- Department of NeurosurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
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Liang Y, Deng MG, Jian Q, Liu M, Fang K, Chen S. Maternal history of Alzheimer's disease predisposes to altered serum cholesterol levels in adult offspring. J Neurochem 2024; 168:303-311. [PMID: 38316937 DOI: 10.1111/jnc.16056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 01/08/2024] [Accepted: 01/08/2024] [Indexed: 02/07/2024]
Abstract
Controversial findings regarding the association between serum cholesterol levels and Alzheimer's disease (AD) have been identified through observational studies. The genetic basis shared by both factors and the causality between them remain largely unknown. The objective of this study is to examine the causal impact of maternal history of AD on changes in serum cholesterol levels in adult offspring. By retrieving genetic variants from summary statistics of large-scale genome-wide association study of maternal history of AD (European-based: Ncase = 27 696, Ncontrol = 260 980). The causal association between genetically predicted maternal history of AD and changes in serum cholesterol levels in adult offspring was examined using the two-sample Mendelian randomization (MR) method. Causal impact estimates were calculated using single-nucleotide polymorphisms in both univariable MR (UMR) and multivariable MR (MVMR) analyses. Additionally, other approaches, such as Cochran's Q test and leave-one-out variant analysis, were employed to correct for potential biases. The results of UMR presented that genetically predicted maternal history of AD was positively associated with hypercholesterolemia (OR = 1.014; 95% CI: 1.009-1.018; p < 0.001), total cholesterol (OR = 1.29; 95% CI: 1.134-1.466; p < 0.001) and low-density lipoprotein (OR = 1.525; 95% CI: 1.272-1.828; p < 0.001) among adult offspring. Genetic predisposition for maternal history of AD to be negatively associated with high-density lipoprotein (OR = 0.889; 95% CI: 0.861-0.917; p < 0.001). The MVMR analysis remained robust and significant after adjusting for diabetes and obesity in offspring. Sufficient evidence was provided in this study to support the putative causal impact of maternal history of AD on the change of serum cholesterol profile in adult offspring. In clinical practice, priority should be given to the detection and monitoring of cholesterol levels in individuals with a maternal history of AD, particularly in the early stages.
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Affiliation(s)
- Yuehui Liang
- School of Public Health, Wuhan University, Wuhan, China
| | - Ming-Gang Deng
- Department of Psychiatry, Wuhan Mental Health Centre, Wuhan, China
- Department of Psychiatry, Wuhan Hospital for Psychotherapy, Wuhan, China
| | - Qinghong Jian
- The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou, China
| | - Mingwei Liu
- School of Public Health, Wuhan University, Wuhan, China
- Julius Global Health, The Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Kui Fang
- Department of Neurosurgery, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Shuai Chen
- School of Public Health, Wuhan University, Wuhan, China
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Colón Ortiz C, Eroglu C. Astrocyte signaling and interactions in Multiple Sclerosis. Curr Opin Cell Biol 2024; 86:102307. [PMID: 38145604 PMCID: PMC10922437 DOI: 10.1016/j.ceb.2023.102307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/22/2023] [Accepted: 12/06/2023] [Indexed: 12/27/2023]
Abstract
Multiple Sclerosis (MS) is a common cause of impairment in working-aged adults. MS is characterized by neuroinflammation and infiltration of peripheral immune cells to the brain, which cause myelin loss and death of oligodendrocytes and neurons. Many studies on MS have focused on the peripheral immune sources of demyelination and repair. However, recent studies revealed that a glial cell type, the astrocytes, undergo robust morphological and transcriptomic changes that contribute significantly to demyelination and myelin repair. Here, we discuss recent findings elucidating signaling modalities that astrocytes acquire or lose in MS and how these changes alter the interactions of astrocytes with other nervous system cell types.
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Affiliation(s)
- Crystal Colón Ortiz
- Department of Cell Biology, Duke University Medical Center, Durham, NC, 27710, USA
| | - Cagla Eroglu
- Department of Cell Biology, Duke University Medical Center, Durham, NC, 27710, USA; Department of Neurobiology, Duke University Medical Center, Durham, NC, 27710, USA; Howard Hughes Medical Institute, Duke University, Durham, NC, 27710, USA.
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Vanherle S, Guns J, Loix M, Mingneau F, Dierckx T, Wouters F, Kuipers K, Vangansewinkel T, Wolfs E, Lins PP, Bronckaers A, Lambrichts I, Dehairs J, Swinnen JV, Verberk SGS, Haidar M, Hendriks JJA, Bogie JFJ. Extracellular vesicle-associated cholesterol supports the regenerative functions of macrophages in the brain. J Extracell Vesicles 2023; 12:e12394. [PMID: 38124258 PMCID: PMC10733568 DOI: 10.1002/jev2.12394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 11/15/2023] [Accepted: 11/23/2023] [Indexed: 12/23/2023] Open
Abstract
Macrophages play major roles in the pathophysiology of various neurological disorders, being involved in seemingly opposing processes such as lesion progression and resolution. Yet, the molecular mechanisms that drive their harmful and benign effector functions remain poorly understood. Here, we demonstrate that extracellular vesicles (EVs) secreted by repair-associated macrophages (RAMs) enhance remyelination ex vivo and in vivo by promoting the differentiation of oligodendrocyte precursor cells (OPCs). Guided by lipidomic analysis and applying cholesterol depletion and enrichment strategies, we find that EVs released by RAMs show markedly elevated cholesterol levels and that cholesterol abundance controls their reparative impact on OPC maturation and remyelination. Mechanistically, EV-associated cholesterol was found to promote OPC differentiation predominantly through direct membrane fusion. Collectively, our findings highlight that EVs are essential for cholesterol trafficking in the brain and that changes in cholesterol abundance support the reparative impact of EVs released by macrophages in the brain, potentially having broad implications for therapeutic strategies aimed at promoting repair in neurodegenerative disorders.
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Affiliation(s)
- Sam Vanherle
- Department of Immunology and Infection, Biomedical Research InstituteHasselt UniversityDiepenbeekBelgium
- University MS Center HasseltPeltBelgium
| | - Jeroen Guns
- Department of Immunology and Infection, Biomedical Research InstituteHasselt UniversityDiepenbeekBelgium
- University MS Center HasseltPeltBelgium
| | - Melanie Loix
- Department of Immunology and Infection, Biomedical Research InstituteHasselt UniversityDiepenbeekBelgium
- University MS Center HasseltPeltBelgium
| | - Fleur Mingneau
- Department of Immunology and Infection, Biomedical Research InstituteHasselt UniversityDiepenbeekBelgium
- University MS Center HasseltPeltBelgium
| | - Tess Dierckx
- Department of Immunology and Infection, Biomedical Research InstituteHasselt UniversityDiepenbeekBelgium
- University MS Center HasseltPeltBelgium
| | - Flore Wouters
- Department of Immunology and Infection, Biomedical Research InstituteHasselt UniversityDiepenbeekBelgium
- University MS Center HasseltPeltBelgium
| | - Koen Kuipers
- Department of Immunology and Infection, Biomedical Research InstituteHasselt UniversityDiepenbeekBelgium
- University MS Center HasseltPeltBelgium
| | - Tim Vangansewinkel
- Department of Cardio and Organs Systems, Biomedical Research InstituteHasselt UniversityDiepenbeekBelgium
- VIB, Center for Brain & Disease Research, Laboratory of NeurobiologyUniversity of LeuvenLeuvenBelgium
| | - Esther Wolfs
- Department of Cardio and Organs Systems, Biomedical Research InstituteHasselt UniversityDiepenbeekBelgium
| | - Paula Pincela Lins
- Department of Cardio and Organs Systems, Biomedical Research InstituteHasselt UniversityDiepenbeekBelgium
- Health DepartmentFlemish Institute for Technological ResearchMolBelgium
| | - Annelies Bronckaers
- Department of Cardio and Organs Systems, Biomedical Research InstituteHasselt UniversityDiepenbeekBelgium
| | - Ivo Lambrichts
- Department of Cardio and Organs Systems, Biomedical Research InstituteHasselt UniversityDiepenbeekBelgium
| | - Jonas Dehairs
- Department of Oncology, Laboratory of Lipid Metabolism and Cancer, Leuven Cancer InstituteUniversity of LeuvenLeuvenBelgium
| | - Johannes V. Swinnen
- Department of Oncology, Laboratory of Lipid Metabolism and Cancer, Leuven Cancer InstituteUniversity of LeuvenLeuvenBelgium
| | - Sanne G. S. Verberk
- Department of Immunology and Infection, Biomedical Research InstituteHasselt UniversityDiepenbeekBelgium
- University MS Center HasseltPeltBelgium
| | - Mansour Haidar
- Department of Immunology and Infection, Biomedical Research InstituteHasselt UniversityDiepenbeekBelgium
- University MS Center HasseltPeltBelgium
| | - Jerome J. A. Hendriks
- Department of Immunology and Infection, Biomedical Research InstituteHasselt UniversityDiepenbeekBelgium
- University MS Center HasseltPeltBelgium
| | - Jeroen F. J. Bogie
- Department of Immunology and Infection, Biomedical Research InstituteHasselt UniversityDiepenbeekBelgium
- University MS Center HasseltPeltBelgium
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Chiu HY, Chang HT, Chan PC, Chiu PY. Cholesterol Levels, Hormone Replacement Therapy, and Incident Dementia among Older Adult Women. Nutrients 2023; 15:4481. [PMID: 37892556 PMCID: PMC10610485 DOI: 10.3390/nu15204481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 10/13/2023] [Accepted: 10/20/2023] [Indexed: 10/29/2023] Open
Abstract
Previous studies revealed that hormone replacement therapy (HRT) probably has a protective effect for preventing dementia in post-menopausal women. However, the results were still controversial. The association between cholesterol levels and incident dementia in older women is not fully understood either. We conducted a retrospective analysis on a cohort of non-demented women aged older than 50 years, which was registered in the History-based Artificial Intelligence Clinical Dementia Diagnostic System database from September 2015 to August 2021. We followed this cohort longitudinally to examine the rates of conversion to dementia. Using a Cox regression model, we investigated the impact of the quartile of total cholesterol (TC) levels on incident dementia, adjusting for age, sex, education, neuropsychiatric symptoms, neuropsychological assessments, HRT, as well as various vascular risk factors and medications. We examined a cohort of 787 participants, comprising 539 (68.5%) individuals who did not develop dementia (non-converters). Among these non-converters, 68 individuals (12.6%) were treated with HRT. By contrast, there were 248 (31.5%) who did develop dementia (converters). Among the converters, 28 individuals (11.3%) were treated with HRT. The average follow-up durations were 2.9 ± 1.5 and 3.3 ± 1.6 years for non-converters and converters, respectively. Compared to the lowest quartile of TC levels (<153), the hazard ratios (HR) for converting to dementia were 0.61, 0.58, and 0.58 for the second (153-176), third (177-201), and highest (>201) quartiles, respectively (all p < 0.05). However, the low-density lipoprotein cholesterol (LDL-C) level and HRT did not alter the rate of conversion to dementia. In conclusion, the lowest quartile of TC increased incident dementia in post-menopausal women without dementia; however, HRT did not contribute to conversion to dementia. Some studies suggest that post-menopausal women who have reduced estrogen levels might have an increased risk of Alzheimer's disease if they also have high cholesterol. Nonetheless, the evidence is inconclusive, as not all studies support this finding. The "Lower LDL-C is better" strategy for preventing cardiac vascular disease should be re-examined for the possible serial adverse effects of new onset dementia due to very low cholesterol levels.
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Affiliation(s)
- Huei-Ying Chiu
- Department of Obstetrics and Gynecology, Show Chwan Memorial Hospital, Changhua 500, Taiwan;
| | - Hsin-Te Chang
- Department of Psychology, College of Science, Chung Yuan Christian University, Taoyuan 320, Taiwan;
| | - Po-Chi Chan
- Department of Neurology, Show Chwan Memorial Hospital, Changhua 500, Taiwan;
| | - Pai-Yi Chiu
- Department of Neurology, Show Chwan Memorial Hospital, Changhua 500, Taiwan;
- Department of Applied Mathematics, Tunghai University, Taichung 407, Taiwan
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6
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Doyle WJ, Walters D, Shi X, Hoffman K, Magori K, Roullet JB, Ochoa-Repáraz J. Farnesol brain transcriptomics in CNS inflammatory demyelination. Clin Immunol 2023; 255:109752. [PMID: 37673223 PMCID: PMC10619994 DOI: 10.1016/j.clim.2023.109752] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 08/26/2023] [Accepted: 08/30/2023] [Indexed: 09/08/2023]
Abstract
BACKGROUND Farnesol (FOL) prevents the onset of experimental autoimmune encephalomyelitis (EAE), a murine model of multiple sclerosis (MS). OBJECTIVE We examined the transcriptomic profile of the brains of EAE mice treated with daily oral FOL using next-generation sequencing (RNA-seq). METHODS Transcriptomics from whole brains of treated and untreated EAE mice at the peak of EAE was performed. RESULTS EAE-induced mice, compared to naïve, healthy mice, overall showed increased expression in pathways for immune response, as well as an increased cytokine signaling pathway, with downregulation of cellular stress proteins. FOL downregulates pro-inflammatory pathways and attenuates the immune response in EAE. FOL downregulated the expression of genes involved in misfolded protein response, MAPK activation/signaling, and pro-inflammatory response. CONCLUSION This study provides insight into the molecular impact of FOL in the brain and identifies potential therapeutic targets of the isoprenoid pathway in MS patients.
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Affiliation(s)
- William J Doyle
- Department of Biological Sciences, Boise State University, Boise, ID 83725, USA
| | - Dana Walters
- Pharmacotherapy, College of Pharmacy and Pharmaceutical Sciences, Washington State University, Spokane, WA 99202, USA
| | - Xutong Shi
- Pharmacotherapy, College of Pharmacy and Pharmaceutical Sciences, Washington State University, Spokane, WA 99202, USA
| | - Kristina Hoffman
- Department of Biological Sciences, Boise State University, Boise, ID 83725, USA
| | - Krisztian Magori
- Department of Biology, Eastern Washington University, Cheney, WA 99004, USA
| | - Jean-Baptiste Roullet
- Pharmacotherapy, College of Pharmacy and Pharmaceutical Sciences, Washington State University, Spokane, WA 99202, USA
| | - Javier Ochoa-Repáraz
- Department of Biological Sciences, Boise State University, Boise, ID 83725, USA.
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Rudajev V, Novotny J. Cholesterol-dependent amyloid β production: space for multifarious interactions between amyloid precursor protein, secretases, and cholesterol. Cell Biosci 2023; 13:171. [PMID: 37705117 PMCID: PMC10500844 DOI: 10.1186/s13578-023-01127-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 09/05/2023] [Indexed: 09/15/2023] Open
Abstract
Amyloid β is considered a key player in the development and progression of Alzheimer's disease (AD). Many studies investigating the effect of statins on lowering cholesterol suggest that there may be a link between cholesterol levels and AD pathology. Since cholesterol is one of the most abundant lipid molecules, especially in brain tissue, it affects most membrane-related processes, including the formation of the most dangerous form of amyloid β, Aβ42. The entire Aβ production system, which includes the amyloid precursor protein (APP), β-secretase, and the complex of γ-secretase, is highly dependent on membrane cholesterol content. Moreover, cholesterol can affect amyloidogenesis in many ways. Cholesterol influences the stability and activity of secretases, but also dictates their partitioning into specific cellular compartments and cholesterol-enriched lipid rafts, where the amyloidogenic machinery is predominantly localized. The most complicated relationships have been found in the interaction between cholesterol and APP, where cholesterol affects not only APP localization but also the precise character of APP dimerization and APP processing by γ-secretase, which is important for the production of Aβ of different lengths. In this review, we describe the intricate web of interdependence between cellular cholesterol levels, cholesterol membrane distribution, and cholesterol-dependent production of Aβ, the major player in AD.
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Affiliation(s)
- Vladimir Rudajev
- Department of Physiology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Jiri Novotny
- Department of Physiology, Faculty of Science, Charles University, Prague, Czech Republic
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Jia Z, Zeng H, Ye X, Dai M, Tang C, Liu L. Hydrogel-based treatments for spinal cord injuries. Heliyon 2023; 9:e19933. [PMID: 37809859 PMCID: PMC10559361 DOI: 10.1016/j.heliyon.2023.e19933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 09/05/2023] [Accepted: 09/06/2023] [Indexed: 10/10/2023] Open
Abstract
Spinal cord injury (SCI) is characterized by damage resulting in dysfunction of the spinal cord. Hydrogels are common biomaterials that play an important role in the treatment of SCI. Hydrogels are biocompatible, and some have electrical conductivity that are compatible with spinal cord tissues. Hydrogels have a high drug-carrying capacity, allowing them to be used for SCI treatment through the loading of various types of active substances, drugs, or cells. We first discuss the basic anatomy and physiology of the human spinal cord and briefly discuss SCI and its treatment. Then, we describe different treatment strategies for SCI. We further discuss the crosslinking methods and classification of hydrogels and detail hydrogel biomaterials prepared using different processing methods for the treatment of SCI. Finally, we analyze the future applications and limitations of hydrogels for SCI. The development of biomaterials opens up new possibilities and options for the treatment of SCI. Thus, our findings will inspire scholars in related fields and promote the development of hydrogel therapy for SCI.
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Affiliation(s)
- Zhiqiang Jia
- The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325200, China
| | - Huanxuan Zeng
- The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325200, China
| | - Xiuzhi Ye
- The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325200, China
| | - Minghai Dai
- The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325200, China
| | - Chengxuan Tang
- The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325200, China
| | - Liangle Liu
- The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325200, China
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Saher G. Cholesterol Metabolism in Aging and Age-Related Disorders. Annu Rev Neurosci 2023; 46:59-78. [PMID: 37428605 DOI: 10.1146/annurev-neuro-091922-034237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
All mammalian cell membranes contain cholesterol to maintain membrane integrity. The transport of this hydrophobic lipid is mediated by lipoproteins. Cholesterol is especially enriched in the brain, particularly in synaptic and myelin membranes. Aging involves changes in sterol metabolism in peripheral organs and also in the brain. Some of those alterations have the potential to promote or to counteract the development of neurodegenerative diseases during aging. Here, we summarize the current knowledge of general principles of sterol metabolism in humans and mice, the most widely used model organism in biomedical research. We discuss changes in sterol metabolism that occur in the aged brain and highlight recent developments in cell type-specific cholesterol metabolism in the fast-growing research field of aging and age-related diseases, focusing on Alzheimer's disease. We propose that cell type-specific cholesterol handling and the interplay between cell types critically influence age-related disease processes.
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Affiliation(s)
- Gesine Saher
- Department of Neurogenetics, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany;
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Filipi T, Matusova Z, Abaffy P, Vanatko O, Tureckova J, Benesova S, Kubiskova M, Kirdajova D, Zahumensky J, Valihrach L, Anderova M. Cortical glia in SOD1(G93A) mice are subtly affected by ALS-like pathology. Sci Rep 2023; 13:6538. [PMID: 37085528 PMCID: PMC10121704 DOI: 10.1038/s41598-023-33608-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 04/15/2023] [Indexed: 04/23/2023] Open
Abstract
The role of glia in amyotrophic lateral sclerosis (ALS) is undeniable. Their disease-related activity has been extensively studied in the spinal cord, but only partly in the brain. We present herein a comprehensive study of glia in the cortex of SOD1(G93A) mice-a widely used model of ALS. Using single-cell RNA sequencing (scRNA-seq) and immunohistochemistry, we inspected astrocytes, microglia, and oligodendrocytes, in four stages of the disease, respecting the factor of sex. We report minimal changes of glia throughout the disease progression and regardless of sex. Pseudobulk and single-cell analyses revealed subtle disease-related transcriptional alterations at the end-stage in microglia and oligodendrocytes, which were supported by immunohistochemistry. Therefore, our data support the hypothesis that the SOD1(G93A) mouse cortex does not recapitulate the disease in patients, and we recommend the use of a different model for future studies of the cortical ALS pathology.
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Affiliation(s)
- Tereza Filipi
- Department of Cellular Neurophysiology, Institute of Experimental Medicine, Czech Academy of Sciences, Videnska 1083, 14220, Prague, Czech Republic
- Second Faculty of Medicine, Charles University, V Uvalu 84, 15006, Prague, Czech Republic
| | - Zuzana Matusova
- Laboratory of Gene Expression, Institute of Biotechnology CAS, BIOCEV, Prumyslova 595, 25250, Vestec, Czech Republic
- Faculty of Science, Charles University, Albertov 6, 12800, Prague, Czech Republic
| | - Pavel Abaffy
- Laboratory of Gene Expression, Institute of Biotechnology CAS, BIOCEV, Prumyslova 595, 25250, Vestec, Czech Republic
| | - Ondrej Vanatko
- Department of Cellular Neurophysiology, Institute of Experimental Medicine, Czech Academy of Sciences, Videnska 1083, 14220, Prague, Czech Republic
- Second Faculty of Medicine, Charles University, V Uvalu 84, 15006, Prague, Czech Republic
| | - Jana Tureckova
- Department of Cellular Neurophysiology, Institute of Experimental Medicine, Czech Academy of Sciences, Videnska 1083, 14220, Prague, Czech Republic
| | - Sarka Benesova
- Laboratory of Gene Expression, Institute of Biotechnology CAS, BIOCEV, Prumyslova 595, 25250, Vestec, Czech Republic
- Department of Informatics and Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology, Technicka 5, 16628, Prague, Czech Republic
| | - Monika Kubiskova
- Department of Cellular Neurophysiology, Institute of Experimental Medicine, Czech Academy of Sciences, Videnska 1083, 14220, Prague, Czech Republic
| | - Denisa Kirdajova
- Department of Cellular Neurophysiology, Institute of Experimental Medicine, Czech Academy of Sciences, Videnska 1083, 14220, Prague, Czech Republic
| | - Jakub Zahumensky
- Department of Functional Organization of Biomembranes, Institute of Experimental Medicine, Czech Academy of Sciences, Videnska 1083, 14220, Prague, Czech Republic
| | - Lukas Valihrach
- Laboratory of Gene Expression, Institute of Biotechnology CAS, BIOCEV, Prumyslova 595, 25250, Vestec, Czech Republic.
| | - Miroslava Anderova
- Department of Cellular Neurophysiology, Institute of Experimental Medicine, Czech Academy of Sciences, Videnska 1083, 14220, Prague, Czech Republic.
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Lisakovska O, Labudzynskyi D, Khomenko A, Isaev D, Savotchenko A, Kasatkina L, Savosko S, Veliky M, Shymanskyi I. Brain vitamin D3-auto/paracrine system in relation to structural, neurophysiological, and behavioral disturbances associated with glucocorticoid-induced neurotoxicity. Front Cell Neurosci 2023; 17:1133400. [PMID: 37020845 PMCID: PMC10067932 DOI: 10.3389/fncel.2023.1133400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 02/28/2023] [Indexed: 03/22/2023] Open
Abstract
IntroductionVitamin D3 (VD3) is a potent para/autocrine regulator and neurosteroid that can strongly influence nerve cell function and counteract the negative effects of glucocorticoid (GC) therapy. The aim of the study was to reveal the relationship between VD3 status and behavioral, structural-functional and molecular changes associated with GC-induced neurotoxicity.MethodsFemale Wistar rats received synthetic GC prednisolone (5 mg/kg b.w.) with or without VD3 (1000 IU/kg b.w.) for 30 days. Behavioral, histological, physiological, biochemical, molecular biological (RT-PCR, Western blotting) methods, and ELISA were used.Results and discussionThere was no difference in open field test (OFT), while forced swim test (FST) showed an increase in immobility time and a decrease in active behavior in prednisolone-treated rats, indicative of depressive changes. GC increased the perikaryon area, enlarged the size of the nuclei, and caused a slight reduction of cell density in CA1-CA3 hippocampal sections. We established a GC-induced decrease in the long-term potentiation (LTP) in CA1-CA3 hippocampal synapses, the amplitude of high K+-stimulated exocytosis, and the rate of Ca2+-dependent fusion of synaptic vesicles with synaptic plasma membranes. These changes were accompanied by an increase in nitration and poly(ADP)-ribosylation of cerebral proteins, suggesting the development of oxidative-nitrosative stress. Prednisolone upregulated the expression and phosphorylation of NF-κB p65 subunit at Ser311, whereas downregulating IκB. GC loading depleted the circulating pool of 25OHD3 in serum and CSF, elevated VDR mRNA and protein levels but had an inhibitory effect on CYP24A1 and VDBP expression. Vitamin D3 supplementation had an antidepressant-like effect, decreasing the immobility time and stimulating active behavior. VD3 caused a decrease in the size of the perikaryon and nucleus in CA1 hippocampal area. We found a recovery in depolarization-induced fusion of synaptic vesicles and long-term synaptic plasticity after VD3 treatment. VD3 diminished the intensity of oxidative-nitrosative stress, and suppressed the NF-κB activation. Its ameliorative effect on GC-induced neuroanatomical and behavioral abnormalities was accompanied by the 25OHD3 repletion and partial restoration of the VD3-auto/paracrine system.ConclusionGC-induced neurotoxicity and behavioral disturbances are associated with increased oxidative-nitrosative stress and impairments of VD3 metabolism. Thus, VD3 can be effective in preventing structural and functional abnormalities in the brain and behavior changes caused by long-term GC administration.
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Affiliation(s)
- Olha Lisakovska
- Department of Biochemistry of Vitamins and Coenzymes, Palladin Institute of Biochemistry, Kyiv, Ukraine
- *Correspondence: Olha Lisakovska,
| | - Dmytro Labudzynskyi
- Department of Biochemistry of Vitamins and Coenzymes, Palladin Institute of Biochemistry, Kyiv, Ukraine
| | - Anna Khomenko
- Department of Biochemistry of Vitamins and Coenzymes, Palladin Institute of Biochemistry, Kyiv, Ukraine
| | - Dmytro Isaev
- Department of Cellular Membranology, Bogomoletz Institute of Physiology, Kyiv, Ukraine
| | - Alina Savotchenko
- Department of Cellular Membranology, Bogomoletz Institute of Physiology, Kyiv, Ukraine
| | - Ludmila Kasatkina
- Research Laboratory for Young Scientists, Palladin Institute of Biochemistry, Kyiv, Ukraine
| | - Serhii Savosko
- Department of Histology and Embryology, Bogomolets National Medical University, Kyiv, Ukraine
| | - Mykola Veliky
- Department of Biochemistry of Vitamins and Coenzymes, Palladin Institute of Biochemistry, Kyiv, Ukraine
| | - Ihor Shymanskyi
- Department of Biochemistry of Vitamins and Coenzymes, Palladin Institute of Biochemistry, Kyiv, Ukraine
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12
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Gao YH, Li X. Cholesterol metabolism: Towards a therapeutic approach for multiple sclerosis. Neurochem Int 2023; 164:105501. [PMID: 36803679 DOI: 10.1016/j.neuint.2023.105501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 01/26/2023] [Accepted: 01/30/2023] [Indexed: 02/17/2023]
Abstract
Growing evidence points to the importance of cholesterol in preserving brain homeostasis. Cholesterol makes up the main component of myelin in the brain, and myelin integrity is vital in demyelinating diseases such as multiple sclerosis. Because of the connection between myelin and cholesterol, the interest in cholesterol in the central nervous system increased during the last decade. In this review, we provide a detailed overview on brain cholesterol metabolism in multiple sclerosis and its role in promoting oligodendrocyte precursor cell differentiation and remyelination.
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Affiliation(s)
- Yu-Han Gao
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry (Shaanxi Normal University), The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi, 710119, China
| | - Xing Li
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry (Shaanxi Normal University), The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi, 710119, China.
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13
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Stanzani A, Sansone A, Brenna C, Baldassarro VA, Alastra G, Lorenzini L, Chatgilialoglu C, Laface I, Ferreri C, Neri LM, Calzà L. Erythrocyte Plasma Membrane Lipid Composition Mirrors That of Neurons and Glial Cells in Murine Experimental In Vitro and In Vivo Inflammation. Cells 2023; 12. [PMID: 36831228 DOI: 10.3390/cells12040561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 01/30/2023] [Accepted: 02/06/2023] [Indexed: 02/12/2023] Open
Abstract
Lipid membrane turnover and myelin repair play a central role in diseases and lesions of the central nervous system (CNS). The aim of the present study was to analyze lipid composition changes due to inflammatory conditions. We measured the fatty acid (FA) composition in erythrocytes (RBCs) and spinal cord tissue (gas chromatography) derived from mice affected by experimental allergic encephalomyelitis (EAE) in acute and remission phases; cholesterol membrane content (Filipin) and GM1 membrane assembly (CT-B) in EAE mouse RBCs, and in cultured neurons, oligodendroglial cells and macrophages exposed to inflammatory challenges. During the EAE acute phase, the RBC membrane showed a reduction in polyunsaturated FAs (PUFAs) and an increase in saturated FAs (SFAs) and the omega-6/omega-3 ratios, followed by a restoration to control levels in the remission phase in parallel with an increase in monounsaturated fatty acid residues. A decrease in PUFAs was also shown in the spinal cord. CT-B staining decreased and Filipin staining increased in RBCs during acute EAE, as well as in cultured macrophages, neurons and oligodendrocyte precursor cells exposed to inflammatory challenges. This regulation in lipid content suggests an increased cell membrane rigidity during the inflammatory phase of EAE and supports the investigation of peripheral cell membrane lipids as possible biomarkers for CNS lipid membrane concentration and assembly.
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Cao X, Fang W, Li J, Zheng J, Wang X, Mai K, Ai Q. Long noncoding RNA lincsc5d regulates hepatic cholesterol synthesis by modulating sterol C5 desaturase in large yellow croaker. Comp Biochem Physiol B Biochem Mol Biol 2023; 263:110800. [PMID: 36167286 DOI: 10.1016/j.cbpb.2022.110800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 08/28/2022] [Accepted: 09/21/2022] [Indexed: 11/25/2022]
Abstract
Although long noncoding RNA (lncRNA) plays a vital role in cholesterol metabolism, very little information is available in fish. Thus, a 10-week feeding experiment was performed to estimate the effects of lncRNA on cholesterol metabolism in large yellow croaker fed with fish oil (FO), soybean oil (SO), olive oil (OO), and palm oil (PO) diets. Results showed that fish fed with OO and PO diets had higher liver total cholesterol (TC) and cholesterol ester (CE) contents compared with fish fed with FO diets. Analysis of the KEGG pathway showed that the steroid biosynthesis pathway was enriched in comparisons FO vs SO, FO vs OO, and FO vs PO. Meanwhile, sterol C5 desaturase (SC5D), a cholesterol synthase, was up-regulated in the steroid biosynthesis pathway. SC5D was widely expressed in all tissues examined, and the highest expression of SC5D was detected in brain. More importantly, a novel lncRNA associated with sc5d gene was identified by RNA sequencing and named as lincsc5d. The tissue distribution of lincsc5d was similar to that of sc5d. A nuclear/cytoplasmic RNA separation assay showed that lincsc5d was a nucleus-enriched lncRNA. qRT-PCR results demonstrated that lincsc5d was markedly up-regulated in the SO, OO, and PO groups. Furthermore, the results of TC content and the lincsc5d and sc5d expression in hepatocytes agreed with in vivo results. In conclusion, this study indicated that vegetable oils, especially OO and PO, increased hepatic cholesterol levels by promoting cholesterol synthesis, and lncRNA lincsc5d and sc5d might be involved in cholesterol synthesis.
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Affiliation(s)
- Xiufei Cao
- Key Laboratory of Aquaculture Nutrition and Feed (Ministry of Agriculture and Rural Affairs), Key Laboratory of Mariculture (Ministry of Education), Ocean University of China, 5 Yushan Road, Qingdao, Shandong 266003, People's Republic of China
| | - Wei Fang
- Key Laboratory of Aquaculture Nutrition and Feed (Ministry of Agriculture and Rural Affairs), Key Laboratory of Mariculture (Ministry of Education), Ocean University of China, 5 Yushan Road, Qingdao, Shandong 266003, People's Republic of China
| | - JiaMin Li
- Key Laboratory of Aquaculture Nutrition and Feed (Ministry of Agriculture and Rural Affairs), Key Laboratory of Mariculture (Ministry of Education), Ocean University of China, 5 Yushan Road, Qingdao, Shandong 266003, People's Republic of China
| | - Jichang Zheng
- Key Laboratory of Aquaculture Nutrition and Feed (Ministry of Agriculture and Rural Affairs), Key Laboratory of Mariculture (Ministry of Education), Ocean University of China, 5 Yushan Road, Qingdao, Shandong 266003, People's Republic of China
| | - Xiuneng Wang
- Key Laboratory of Aquaculture Nutrition and Feed (Ministry of Agriculture and Rural Affairs), Key Laboratory of Mariculture (Ministry of Education), Ocean University of China, 5 Yushan Road, Qingdao, Shandong 266003, People's Republic of China
| | - Kangsen Mai
- Key Laboratory of Aquaculture Nutrition and Feed (Ministry of Agriculture and Rural Affairs), Key Laboratory of Mariculture (Ministry of Education), Ocean University of China, 5 Yushan Road, Qingdao, Shandong 266003, People's Republic of China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao, Shandong 266237, People's Republic of China
| | - Qinghui Ai
- Key Laboratory of Aquaculture Nutrition and Feed (Ministry of Agriculture and Rural Affairs), Key Laboratory of Mariculture (Ministry of Education), Ocean University of China, 5 Yushan Road, Qingdao, Shandong 266003, People's Republic of China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao, Shandong 266237, People's Republic of China.
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15
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Nassar A, Kodi T, Satarker S, Chowdari Gurram P, Upadhya D, SM F, Mudgal J, Nampoothiri M. Astrocytic MicroRNAs and Transcription Factors in Alzheimer's Disease and Therapeutic Interventions. Cells 2022; 11:cells11244111. [PMID: 36552875 PMCID: PMC9776935 DOI: 10.3390/cells11244111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 12/13/2022] [Accepted: 12/14/2022] [Indexed: 12/24/2022] Open
Abstract
Astrocytes are important for maintaining cholesterol metabolism, glutamate uptake, and neurotransmission. Indeed, inflammatory processes and neurodegeneration contribute to the altered morphology, gene expression, and function of astrocytes. Astrocytes, in collaboration with numerous microRNAs, regulate brain cholesterol levels as well as glutamatergic and inflammatory signaling, all of which contribute to general brain homeostasis. Neural electrical activity, synaptic plasticity processes, learning, and memory are dependent on the astrocyte-neuron crosstalk. Here, we review the involvement of astrocytic microRNAs that potentially regulate cholesterol metabolism, glutamate uptake, and inflammation in Alzheimer's disease (AD). The interaction between astrocytic microRNAs and long non-coding RNA and transcription factors specific to astrocytes also contributes to the pathogenesis of AD. Thus, astrocytic microRNAs arise as a promising target, as AD conditions are a worldwide public health problem. This review examines novel therapeutic strategies to target astrocyte dysfunction in AD, such as lipid nanodiscs, engineered G protein-coupled receptors, extracellular vesicles, and nanoparticles.
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Affiliation(s)
- Ajmal Nassar
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Triveni Kodi
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Sairaj Satarker
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Prasada Chowdari Gurram
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Dinesh Upadhya
- Centre for Molecular Neurosciences, Kasturba Medical College, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Fayaz SM
- Department of Biotechnology, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Jayesh Mudgal
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Madhavan Nampoothiri
- Department of Pharmacology, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
- Correspondence:
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16
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Song S, Hasan MN, Yu L, Paruchuri SS, Bielanin JP, Metwally S, Oft HCM, Fischer SG, Fiesler VM, Sen T, Gupta RK, Foley LM, Hitchens TK, Dixon CE, Cambi F, Sen N, Sun D. Microglial-oligodendrocyte interactions in myelination and neurological function recovery after traumatic brain injury. J Neuroinflammation 2022; 19:246. [PMID: 36199097 PMCID: PMC9533529 DOI: 10.1186/s12974-022-02608-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 09/23/2022] [Indexed: 11/10/2022] Open
Abstract
Differential microglial inflammatory responses play a role in regulation of differentiation and maturation of oligodendrocytes (OLs) in brain white matter. How microglia-OL crosstalk is altered by traumatic brain injury (TBI) and its impact on axonal myelination and neurological function impairment remain poorly understood. In this study, we investigated roles of a Na+/H+ exchanger (NHE1), an essential microglial pH regulatory protein, in microglial proinflammatory activation and OL survival and differentiation in a murine TBI model induced by controlled cortical impact. Similar TBI-induced contusion volumes were detected in the Cx3cr1-CreERT2 control (Ctrl) mice and selective microglial Nhe1 knockout (Cx3cr1-CreERT2;Nhe1flox/flox, Nhe1 cKO) mice. Compared to the Ctrl mice, the Nhe1 cKO mice displayed increased resistance to initial TBI-induced white matter damage and accelerated chronic phase of OL regeneration at 30 days post-TBI. The cKO brains presented increased anti-inflammatory phenotypes of microglia and infiltrated myeloid cells, with reduced proinflammatory transcriptome profiles. Moreover, the cKO mice exhibited accelerated post-TBI sensorimotor and cognitive functional recovery than the Ctrl mice. These phenotypic outcomes in cKO mice were recapitulated in C57BL6J wild-type TBI mice receiving treatment of a potent NHE1 inhibitor HOE642 for 1-7 days post-TBI. Taken together, these findings collectively demonstrated that blocking NHE1 protein stimulates restorative microglial activation in oligodendrogenesis and neuroprotection, which contributes to accelerated brain repair and neurological function recovery after TBI.
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Affiliation(s)
- Shanshan Song
- Department of Neurology, University of Pittsburgh, 3501 Fifth Avenue, Pittsburgh, PA, 15213, USA.,Pittsburgh Institute for Neurodegenerative Disorders, University of Pittsburgh, Pittsburgh, PA, 15213, USA.,Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA, 15213, USA
| | - Md Nabiul Hasan
- Department of Neurology, University of Pittsburgh, 3501 Fifth Avenue, Pittsburgh, PA, 15213, USA.,Pittsburgh Institute for Neurodegenerative Disorders, University of Pittsburgh, Pittsburgh, PA, 15213, USA.,Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA, 15213, USA
| | - Lauren Yu
- Department of Neurology, University of Pittsburgh, 3501 Fifth Avenue, Pittsburgh, PA, 15213, USA.,Pittsburgh Institute for Neurodegenerative Disorders, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Satya S Paruchuri
- Department of Neurology, University of Pittsburgh, 3501 Fifth Avenue, Pittsburgh, PA, 15213, USA.,Pittsburgh Institute for Neurodegenerative Disorders, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - John P Bielanin
- Department of Neurology, University of Pittsburgh, 3501 Fifth Avenue, Pittsburgh, PA, 15213, USA.,Pittsburgh Institute for Neurodegenerative Disorders, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Shamseldin Metwally
- Department of Neurology, University of Pittsburgh, 3501 Fifth Avenue, Pittsburgh, PA, 15213, USA.,Pittsburgh Institute for Neurodegenerative Disorders, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Helena C M Oft
- Department of Neurology, University of Pittsburgh, 3501 Fifth Avenue, Pittsburgh, PA, 15213, USA.,Pittsburgh Institute for Neurodegenerative Disorders, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Sydney G Fischer
- Department of Neurology, University of Pittsburgh, 3501 Fifth Avenue, Pittsburgh, PA, 15213, USA.,Pittsburgh Institute for Neurodegenerative Disorders, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Victoria M Fiesler
- Department of Neurology, University of Pittsburgh, 3501 Fifth Avenue, Pittsburgh, PA, 15213, USA.,Pittsburgh Institute for Neurodegenerative Disorders, University of Pittsburgh, Pittsburgh, PA, 15213, USA.,Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA, 15213, USA
| | - Tanusree Sen
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Rajaneesh K Gupta
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Lesley M Foley
- Animal Imaging Center, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - T Kevin Hitchens
- Animal Imaging Center, University of Pittsburgh, Pittsburgh, PA, 15213, USA.,Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - C Edward Dixon
- Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA, 15213, USA.,Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Franca Cambi
- Department of Neurology, University of Pittsburgh, 3501 Fifth Avenue, Pittsburgh, PA, 15213, USA.,Pittsburgh Institute for Neurodegenerative Disorders, University of Pittsburgh, Pittsburgh, PA, 15213, USA.,Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA, 15213, USA
| | - Nilkantha Sen
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Dandan Sun
- Department of Neurology, University of Pittsburgh, 3501 Fifth Avenue, Pittsburgh, PA, 15213, USA. .,Pittsburgh Institute for Neurodegenerative Disorders, University of Pittsburgh, Pittsburgh, PA, 15213, USA. .,Veterans Affairs Pittsburgh Health Care System, Pittsburgh, PA, 15213, USA.
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Indari O, Jakhmola S, Pathak DK, Tanwar M, Kandpal M, Mishra A, Kumar R, Jha HC. Comparative Account of Biomolecular Changes Post Epstein Barr Virus Infection of the Neuronal and Glial Cells Using Raman Microspectroscopy. ACS Chem Neurosci 2022; 13:1627-1637. [PMID: 35561419 DOI: 10.1021/acschemneuro.2c00081] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Raman microspectroscopy is a vibrational spectroscopy technique used for investigating molecular fingerprints of a wide range of liquid or solid samples. The technique can be efficiently utilized to understand the virus-mediated cellular changes and could provide valuable insights into specific biomolecular alterations. The Epstein Barr virus (EBV) has been associated with various types of cancers as well as neurodegenerative diseases. However, EBV-mediated neurological ailments are yet underexplored in terms of biomolecular changes in neuronal and glial cells (astrocytes and microglia). In continuation of our earlier exploration of EBV-influenced glial cells, we tried to decipher biomolecular changes in EBV-infected neuronal cells using Raman microspectroscopy. Additionally, we compared the consecutive biomolecular changes observed in neuronal cells with both the glial cells. We observed that EBV infection gets differentially regulated in the neuronal cells, astrocytes, and microglia. The viral entry and initiation of infection-mediated cellular modulation could start as soon as 2 h post infection but may regulate a distinct biomolecular milieu in different time intervals. Similar to the early timespan, the 24-36 h interval could also be important for EBV to manipulate neuronal as well as glial cells as depicted from elevated biomolecular activities. At these time intervals, some common biomolecules such as proline, glucose, lactic acid, nucleotides, or cholesterol were observed in the cells. However, at these time intervals, some distinct biomolecules were also observed in each cell, such as collagen, lipid, and protein stretches in the neuronal nucleus (2-4 h); tyrosine and RNA in the astrocyte nucleus (2-4 h nucleus); and fatty acids in the microglia nucleus (24-36 h). The observed biomolecular entities could ultimately play pivotal roles in the viral usurpation of cells. We also provided insights into whether these biomolecular changes can be correlated to each other and mediate virus-associated manifestations which can be linked to neurological complications. Our study aids in the understanding of EBV-mediated biomolecular changes in the various compartments of the central nervous system.
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Affiliation(s)
- Omkar Indari
- Infection Bioengineering Group, Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, Indore 453552, India
| | - Shweta Jakhmola
- Infection Bioengineering Group, Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, Indore 453552, India
| | - Devesh K. Pathak
- Materials and Device Laboratory, Department of Physics, Indian Institute of Technology Indore, Simrol, Indore 453552, India
- Department of Chemical Engineering, University of Seoul, Seoul 02504, Republic of Korea
| | - Manushree Tanwar
- Materials and Device Laboratory, Department of Physics, Indian Institute of Technology Indore, Simrol, Indore 453552, India
| | - Meenakshi Kandpal
- Infection Bioengineering Group, Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, Indore 453552, India
| | - Amit Mishra
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Jodhpur 342011, India
| | - Rajesh Kumar
- Materials and Device Laboratory, Department of Physics, Indian Institute of Technology Indore, Simrol, Indore 453552, India
| | - Hem Chandra Jha
- Infection Bioengineering Group, Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, Indore 453552, India
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Li D, Zhang J, Liu Q. Brain cell type-specific cholesterol metabolism and implications for learning and memory. Trends Neurosci 2022. [DOI: 10.1016/j.tins.2022.01.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 01/06/2022] [Accepted: 01/25/2022] [Indexed: 12/21/2022]
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19
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Berghoff SA, Spieth L, Saher G. Local cholesterol metabolism orchestrates remyelination. Trends Neurosci 2022; 45:272-283. [DOI: 10.1016/j.tins.2022.01.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 01/07/2022] [Accepted: 01/21/2022] [Indexed: 12/19/2022]
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Abstract
Myelin is a modified cell membrane that forms a multilayer sheath around the axon. It retains the main characteristics of biological membranes, such as lipid bilayer, but differs from them in several important respects. In this review, we focus on aspects of myelin composition that are peculiar to this structure and differentiate it from the more conventional cell membranes, with special attention to its constituent lipid components and several of the most common and important myelin proteins: myelin basic protein, proteolipid protein, and myelin protein zero. We also discuss the many-fold functions of myelin, which include reliable electrical insulation of axons to ensure rapid propagation of nerve impulses, provision of trophic support along the axon and organization of the unmyelinated nodes of Ranvier, as well as the relationship between myelin biology and neurologic disease such as multiple sclerosis. We conclude with a brief history of discovery in the field and outline questions for future research.
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Affiliation(s)
- Alexander Kister
- Department of Neurology, New York University Grossman School of Medicine, New York, NY, United States
| | - Ilya Kister
- Department of Neurology, New York University Grossman School of Medicine, New York, NY, United States
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