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Di Martino E, Rayasam A, Vexler ZS. Brain Maturation as a Fundamental Factor in Immune-Neurovascular Interactions in Stroke. Transl Stroke Res 2024; 15:69-86. [PMID: 36705821 PMCID: PMC10796425 DOI: 10.1007/s12975-022-01111-7] [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: 07/13/2022] [Revised: 11/24/2022] [Accepted: 11/25/2022] [Indexed: 01/28/2023]
Abstract
Injuries in the developing brain cause significant long-term neurological deficits. Emerging clinical and preclinical data have demonstrated that the pathophysiology of neonatal and childhood stroke share similar mechanisms that regulate brain damage, but also have distinct molecular signatures and cellular pathways. The focus of this review is on two different diseases-neonatal and childhood stroke-with emphasis on similarities and distinctions identified thus far in rodent models of these diseases. This includes the susceptibility of distinct cell types to brain injury with particular emphasis on the role of resident and peripheral immune populations in modulating stroke outcome. Furthermore, we discuss some of the most recent and relevant findings in relation to the immune-neurovascular crosstalk and how the influence of inflammatory mediators is dependent on specific brain maturation stages. Finally, we comment on the current state of treatments geared toward inducing neuroprotection and promoting brain repair after injury and highlight that future prophylactic and therapeutic strategies for stroke should be age-specific and consider gender differences in order to achieve optimal translational success.
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Affiliation(s)
- Elena Di Martino
- Department of Neurology, University California San Francisco, 675 Nelson Rising Lane, San Francisco, CA, 94158-0663, USA
| | - Aditya Rayasam
- Department of Neurology, University California San Francisco, 675 Nelson Rising Lane, San Francisco, CA, 94158-0663, USA
| | - Zinaida S Vexler
- Department of Neurology, University California San Francisco, 675 Nelson Rising Lane, San Francisco, CA, 94158-0663, USA.
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2
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Deng X, Hu Z, Zhou S, Wu Y, Fu M, Zhou C, Sun J, Gao X, Huang Y. Perspective from single-cell sequencing: Is inflammation in acute ischemic stroke beneficial or detrimental? CNS Neurosci Ther 2024; 30:e14510. [PMID: 37905592 PMCID: PMC10805403 DOI: 10.1111/cns.14510] [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: 07/05/2023] [Revised: 09/24/2023] [Accepted: 10/08/2023] [Indexed: 11/02/2023] Open
Abstract
BACKGROUND Acute ischemic stroke (AIS) is a common cerebrovascular event associated with high incidence, disability, and poor prognosis. Studies have shown that various cell types, including microglia, astrocytes, oligodendrocytes, neurons, and neutrophils, play complex roles in the early stages of AIS and significantly affect its prognosis. Thus, a comprehensive understanding of the mechanisms of action of these cells will be beneficial for improving stroke prognosis. With the rapid development of single-cell sequencing technology, researchers have explored the pathophysiological mechanisms underlying AIS at the single-cell level. METHOD We systematically summarize the latest research on single-cell sequencing in AIS. RESULT In this review, we summarize the phenotypes and functions of microglia, astrocytes, oligodendrocytes, neurons, neutrophils, monocytes, and lymphocytes, as well as their respective subtypes, at different time points following AIS. In particular, we focused on the crosstalk between microglia and astrocytes, oligodendrocytes, and neurons. Our findings reveal diverse and sometimes opposing roles within the same cell type, with the possibility of interconversion between different subclusters. CONCLUSION This review offers a pioneering exploration of the functions of various glial cells and cell subclusters after AIS, shedding light on their regulatory mechanisms that facilitate the transformation of detrimental cell subclusters towards those that are beneficial for improving the prognosis of AIS. This approach has the potential to advance the discovery of new specific targets and the development of drugs, thus representing a significant breakthrough in addressing the challenges in AIS treatment.
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Affiliation(s)
- Xinpeng Deng
- Department of NeurosurgeryThe First Affiliated Hospital of Ningbo UniversityNingboChina
- Key Laboratory of Precision Medicine for Atherosclerotic Diseases of Zhejiang ProvinceNingboChina
| | - Ziliang Hu
- Department of NeurosurgeryThe First Affiliated Hospital of Ningbo UniversityNingboChina
- Key Laboratory of Precision Medicine for Atherosclerotic Diseases of Zhejiang ProvinceNingboChina
| | - Shengjun Zhou
- Department of NeurosurgeryThe First Affiliated Hospital of Ningbo UniversityNingboChina
| | - Yiwen Wu
- Department of NeurosurgeryThe First Affiliated Hospital of Ningbo UniversityNingboChina
| | - Menglin Fu
- School of Economics and ManagementChina University of GeosciencesWuhanChina
| | - Chenhui Zhou
- Department of NeurosurgeryThe First Affiliated Hospital of Ningbo UniversityNingboChina
| | - Jie Sun
- Department of NeurosurgeryThe First Affiliated Hospital of Ningbo UniversityNingboChina
| | - Xiang Gao
- Department of NeurosurgeryThe First Affiliated Hospital of Ningbo UniversityNingboChina
| | - Yi Huang
- Department of NeurosurgeryThe First Affiliated Hospital of Ningbo UniversityNingboChina
- Key Laboratory of Precision Medicine for Atherosclerotic Diseases of Zhejiang ProvinceNingboChina
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3
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Marquez-Ortiz RA, Tesic V, Hernandez DR, Akhter B, Aich N, Boudreaux PM, Clemons GA, Wu CYC, Lin HW, Rodgers KM. Neuroimmune Support of Neuronal Regeneration and Neuroplasticity following Cerebral Ischemia in Juvenile Mice. Brain Sci 2023; 13:1337. [PMID: 37759938 PMCID: PMC10526826 DOI: 10.3390/brainsci13091337] [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: 08/19/2023] [Revised: 09/13/2023] [Accepted: 09/15/2023] [Indexed: 09/29/2023] Open
Abstract
Ischemic damage to the brain and loss of neurons contribute to functional disabilities in many stroke survivors. Recovery of neuroplasticity is critical to restoration of function and improved quality of life. Stroke and neurological deficits occur in both adults and children, and yet it is well documented that the developing brain has remarkable plasticity which promotes increased post-ischemic functional recovery compared with adults. However, the mechanisms underlying post-stroke recovery in the young brain have not been fully explored. We observed opposing responses to experimental cerebral ischemia in juvenile and adult mice, with substantial neural regeneration and enhanced neuroplasticity detected in the juvenile brain that was not found in adults. We demonstrate strikingly different stroke-induced neuroimmune responses that are deleterious in adults and protective in juveniles, supporting neural regeneration and plasticity. Understanding age-related differences in neuronal repair and regeneration, restoration of neural network function, and neuroimmune signaling in the stroke-injured brain may offer new insights for the development of novel therapeutic strategies for stroke rehabilitation.
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Affiliation(s)
- Ricaurte A. Marquez-Ortiz
- Department of Cellular Biology and Anatomy, Louisiana State University, Health Sciences Center, Shreveport, LA 70803, USA (B.A.)
| | - Vesna Tesic
- Department of Neurology, Louisiana State University, Health Sciences Center, Shreveport, LA 70803, USA
| | - Daniel R. Hernandez
- Department of Cellular Biology and Anatomy, Louisiana State University, Health Sciences Center, Shreveport, LA 70803, USA (B.A.)
| | - Bilkis Akhter
- Department of Cellular Biology and Anatomy, Louisiana State University, Health Sciences Center, Shreveport, LA 70803, USA (B.A.)
| | - Nibedita Aich
- Department of Cellular Biology and Anatomy, Louisiana State University, Health Sciences Center, Shreveport, LA 70803, USA (B.A.)
| | - Porter M. Boudreaux
- Department of Cellular Biology and Anatomy, Louisiana State University, Health Sciences Center, Shreveport, LA 70803, USA (B.A.)
| | - Garrett A. Clemons
- Department of Cellular Biology and Anatomy, Louisiana State University, Health Sciences Center, Shreveport, LA 70803, USA (B.A.)
| | - Celeste Yin-Chieh Wu
- Department of Neurology, Louisiana State University, Health Sciences Center, Shreveport, LA 70803, USA
| | - Hung Wen Lin
- Department of Cellular Biology and Anatomy, Louisiana State University, Health Sciences Center, Shreveport, LA 70803, USA (B.A.)
- Department of Neurology, Louisiana State University, Health Sciences Center, Shreveport, LA 70803, USA
- Department of Pharmacology, Toxicology, and Neuroscience, Louisiana State University, Health Sciences Center, Shreveport, LA 70803, USA
| | - Krista M. Rodgers
- Department of Cellular Biology and Anatomy, Louisiana State University, Health Sciences Center, Shreveport, LA 70803, USA (B.A.)
- Department of Neurology, Louisiana State University, Health Sciences Center, Shreveport, LA 70803, USA
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4
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Werner L, Gliem M, Rychlik N, Pavic G, Reiche L, Kirchhoff F, Silva Oliveira Junior M, Gruchot J, Meuth SG, Küry P, Göttle P. A Novel Ex Vivo Model to Study Therapeutic Treatments for Myelin Repair following Ischemic Damage. Int J Mol Sci 2023; 24:10972. [PMID: 37446147 DOI: 10.3390/ijms241310972] [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: 05/31/2023] [Revised: 06/19/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023] Open
Abstract
Stroke is a major reason for persistent disability due to insufficient treatment strategies beyond reperfusion, leading to oligodendrocyte death and axon demyelination, persistent inflammation and astrogliosis in peri-infarct areas. After injury, oligodendroglial precursor cells (OPCs) have been shown to compensate for myelin loss and prevent axonal loss through the replacement of lost oligodendrocytes, an inefficient process leaving axons chronically demyelinated. Phenotypic screening approaches in demyelinating paradigms revealed substances that promote myelin repair. We established an ex vivo adult organotypic coronal slice culture (OCSC) system to study repair after stroke in a resource-efficient way. Post-photothrombotic OCSCs can be manipulated for 8 d by exposure to pharmacologically active substances testing remyelination activity. OCSCs were isolated from a NG2-CreERT2-td-Tomato knock-in transgenic mouse line to analyze oligodendroglial fate/differentiation and kinetics. Parbendazole boosted differentiation of NG2+ cells and stabilized oligodendroglial fate reflected by altered expression of associated markers PDGFR-α, CC1, BCAS1 and Sox10 and GFAP. In vitro scratch assay and chemical ischemia confirmed the observed effects upon parbendazole treatment. Adult OCSCs represent a fast, reproducible, and quantifiable model to study OPC differentiation competence after stroke. Pharmacological stimulation by means of parbendazole promoted OPC differentiation.
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Affiliation(s)
- Luisa Werner
- Department of Neurology, Medical Faculty, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Michael Gliem
- Department of Neurology, Medical Faculty, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Nicole Rychlik
- Department of Neurology, Medical Faculty, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Goran Pavic
- Department of Neurology, Medical Faculty, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Laura Reiche
- Department of Neurology, Medical Faculty, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Frank Kirchhoff
- Molecular Physiology, Center for Integrative Physiology and Molecular Medicine, University of Saarland, 66424 Homburg, Germany
| | | | - Joel Gruchot
- Department of Neurology, Medical Faculty, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Sven G Meuth
- Department of Neurology, Medical Faculty, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Patrick Küry
- Department of Neurology, Medical Faculty, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Peter Göttle
- Department of Neurology, Medical Faculty, Heinrich Heine University, 40225 Düsseldorf, Germany
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Frazier AP, Mitchell DN, Given KS, Hunn G, Burch AM, Childs CR, Moreno-Garcia M, Corigilano MR, Quillinan N, Macklin WB, Herson PS, Dingman AL. Chronic changes in oligodendrocyte sub-populations after middle cerebral artery occlusion in neonatal mice. Glia 2023; 71:1429-1450. [PMID: 36794545 DOI: 10.1002/glia.24349] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 01/23/2023] [Accepted: 01/25/2023] [Indexed: 02/17/2023]
Abstract
Neonatal stroke is common and causes life-long motor and cognitive sequelae. Because neonates with stroke are not diagnosed until days-months after the injury, chronic targets for repair are needed. We evaluated oligodendrocyte maturity and myelination and assessed oligodendrocyte gene expression changes using single cell RNA sequencing (scRNA seq) at chronic timepoints in a mouse model of neonatal arterial ischemic stroke. Mice underwent 60 min of transient right middle cerebral artery occlusion (MCAO) on postnatal day 10 (p10) and received 5-ethynyl-2'-deoxyuridine (EdU) on post-MCAO days 3-7 to label dividing cells. Animals were sacrificed 14 and 28-30 days post-MCAO for immunohistochemistry and electron microscopy. Oligodendrocytes were isolated from striatum 14 days post-MCAO for scRNA seq and differential gene expression analysis. The density of Olig2+ EdU+ cells was significantly increased in ipsilateral striatum 14 days post-MCAO and the majority of oligodendrocytes were immature. Density of Olig2+ EdU+ cells declined significantly between 14 and 28 days post-MCAO without a concurrent increase in mature Olig2+ EdU+ cells. By 28 days post-MCAO there were significantly fewer myelinated axons in ipsilateral striatum. scRNA seq identified a cluster of "disease associated oligodendrocytes (DOLs)" specific to the ischemic striatum, with increased expression of MHC class I genes. Gene ontology analysis suggested decreased enrichment of pathways involved in myelin production in the reactive cluster. Oligodendrocytes proliferate 3-7 days post-MCAO and persist at 14 days, but fail to mature by 28 days. MCAO induces a subset of oligodendrocytes with reactive phenotype, which may be a therapeutic target to promote white matter repair.
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Affiliation(s)
- Alexandra P Frazier
- Department of Anesthesiology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Danae N Mitchell
- Department of Pediatrics, Division of Child Neurology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Katherine S Given
- Department of Developmental and Cell Biology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Genevieve Hunn
- Department of Anesthesiology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Amelia M Burch
- Department of Anesthesiology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Christine R Childs
- Department of Dermatology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Myriam Moreno-Garcia
- Department of Anesthesiology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Michael R Corigilano
- Department of Graduate Medical Education, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Nidia Quillinan
- Department of Anesthesiology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Wendy B Macklin
- Department of Developmental and Cell Biology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Paco S Herson
- Department of Neurosurgery, The Ohio State University, Columbus, Ohio, USA
| | - Andra L Dingman
- Department of Pediatrics, Division of Child Neurology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
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Ikeno Y, Ghincea CV, Roda GF, Cheng L, Aftab M, Meng X, Weyant MJ, Cleveland JC, Fullerton DA, Reece TB. Direct and indirect activation of the adenosine triphosphate-sensitive potassium channel to induce spinal cord ischemic metabolic tolerance. J Thorac Cardiovasc Surg 2023; 165:e90-e99. [PMID: 34763893 DOI: 10.1016/j.jtcvs.2021.08.085] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 08/07/2021] [Accepted: 08/25/2021] [Indexed: 12/15/2022]
Abstract
OBJECTIVES The mitochondrial adenosine triphosphate-sensitive potassium channel is central to pharmacologically induced tolerance to spinal cord injury. We hypothesized that both direct and nitric oxide-dependent indirect activation of the adenosine triphosphate-sensitive potassium channel contribute to the induction of ischemic metabolic tolerance. METHODS Spinal cord injury was induced in adult male C57BL/6 mice through 7 minutes of thoracic aortic crossclamping. Pretreatment consisted of intraperitoneal injection 3 consecutive days before injury. Experimental groups were sham (no pretreatment or ischemia, n = 10), spinal cord injury control (pretreatment with normal saline, n = 27), Nicorandil 1.0 mg/kg (direct and indirect adenosine triphosphate-sensitive potassium channel opener, n = 20), Nicorandil 1 mg/kg + carboxy-PTIO 1 mg/kg (nitric oxide scavenger, n = 21), carboxy-PTIO (n = 12), diazoxide 5 mg/kg (selective direct adenosine triphosphate-sensitive potassium channel opener, n = 25), and DZ 5 mg/kg+ carboxy-PTIO 1 mg/kg, carboxy-PTIO (n = 23). Limb motor function was assessed using the Basso Mouse Score (0-9) at 12-hour intervals for 48 hours after ischemia. RESULTS Motor function was significantly preserved at all time points after ischemia in the Nicorandil pretreatment group compared with ischemic control. The addition of carboxy-PTIO partially attenuated Nicorandil's motor-preserving effect. Motor function in the Nicorandil + carboxy-PTIO group was significantly preserved compared with the spinal cord injury control group (P < .001), but worse than in the Nicorandil group (P = .078). Motor preservation in the diazoxide group was similar to the Nicorandil + carboxy-PTIO group. There was no significant difference between the diazoxide and diazoxide + carboxy-PTIO groups. CONCLUSIONS Both direct and nitric oxide-dependent indirect activation of the mitochondrial adenosine triphosphate-sensitive potassium channel play an important role in pharmacologically induced motor function preservation.
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Affiliation(s)
- Yuki Ikeno
- Division of Cardiothoracic Surgery, Department of Surgery, University of Colorado, Aurora, Colo
| | - Christian V Ghincea
- Division of Cardiothoracic Surgery, Department of Surgery, University of Colorado, Aurora, Colo
| | - Gavriel F Roda
- Division of Cardiothoracic Surgery, Department of Surgery, University of Colorado, Aurora, Colo
| | - Linling Cheng
- Division of Cardiothoracic Surgery, Department of Surgery, University of Colorado, Aurora, Colo
| | - Muhammad Aftab
- Division of Cardiothoracic Surgery, Department of Surgery, University of Colorado, Aurora, Colo
| | - Xianzhong Meng
- Division of Cardiothoracic Surgery, Department of Surgery, University of Colorado, Aurora, Colo
| | - Michael J Weyant
- Division of Cardiothoracic Surgery, Department of Surgery, University of Colorado, Aurora, Colo
| | - Joseph C Cleveland
- Division of Cardiothoracic Surgery, Department of Surgery, University of Colorado, Aurora, Colo
| | - David A Fullerton
- Division of Cardiothoracic Surgery, Department of Surgery, University of Colorado, Aurora, Colo
| | - T Brett Reece
- Division of Cardiothoracic Surgery, Department of Surgery, University of Colorado, Aurora, Colo.
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Cornet MC, Grose C, Vexler Z, Wu YW, Fullerton HJ. The Role of Infection and Inflammation in the Pathogenesis of Pediatric Arterial Ischemic Stroke. Semin Pediatr Neurol 2022; 44:100995. [PMID: 36456035 DOI: 10.1016/j.spen.2022.100995] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 08/31/2022] [Accepted: 09/05/2022] [Indexed: 11/15/2022]
Abstract
Infections play an important role in the pathogenesis of acute ischemic stroke (AIS) in neonates and children. In neonates, chorioamnionitis or intrauterine inflammation has been implicated as a common risk factor for AIS. In infants and children, recent investigations demonstrated that even minor childhood infections are associated with subsequent increased risk for AIS. Post-infectious inflammatory mechanisms following infections with herpesviruses may lead to focal cerebral arteriopathy (FCA), one of the most common causes of AIS in a previously healthy child. Other agents such as parvovirus B19, dengue virus, and SARS-CoV-2 have recently been implicated as other potential triggers. Infections are compelling treatable stroke risk factors, with available therapies for both pathogens and downstream inflammatory effects. However, infections are common in childhood, while stroke is uncommon. The ongoing VIPS II (Vascular effects of Infection in Pediatric Stroke) study aims to identify the array of pathogens that may lead to childhood AIS and whether either unusual strains or unusual combinations of pathogens explain this paradox. Immune modulation with corticosteroids for FCA is another active area of research, with European and U.S. trials launching soon. The results of these new pediatric stroke studies combined with findings emerging from the larger field of immune-mediated post-infectious diseases will likely lead to new approaches to the prevention and treatment of pediatric stroke. This review highlights recent developments from both clinical and animal model research enhancing our understanding of this relationship between infection, inflammation, and stroke in neonates and children.
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Affiliation(s)
- Marie-Coralie Cornet
- Department of Pediatrics, University of California San Francisco, San Francisco, California, USA.
| | - Charles Grose
- Department of Pediatrics, University of Iowa, Iowa City, Iowa, USA
| | - Zinaida Vexler
- Department of Neurology, University of California San Francisco, San Francisco, California, USA
| | - Yvonne W Wu
- Department of Pediatrics, University of California San Francisco, San Francisco, California, USA; Department of Neurology, University of California San Francisco, San Francisco, California, USA
| | - Heather J Fullerton
- Department of Pediatrics, University of California San Francisco, San Francisco, California, USA; Department of Neurology, University of California San Francisco, San Francisco, California, USA
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Dietz RM, Dingman AL, Herson PS. Cerebral ischemia in the developing brain. J Cereb Blood Flow Metab 2022; 42:1777-1796. [PMID: 35765984 PMCID: PMC9536116 DOI: 10.1177/0271678x221111600] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 04/29/2022] [Accepted: 05/27/2022] [Indexed: 11/16/2022]
Abstract
Brain ischemia affects all ages, from neonates to the elderly population, and is a leading cause of mortality and morbidity. Multiple preclinical rodent models involving different ages have been developed to investigate the effect of ischemia during different times of key brain maturation events. Traditional models of developmental brain ischemia have focused on rodents at postnatal day 7-10, though emerging models in juvenile rodents (postnatal days 17-25) indicate that there may be fundamental differences in neuronal injury and functional outcomes following focal or global cerebral ischemia at different developmental ages, as well as in adults. Here, we consider the timing of injury in terms of excitation/inhibition balance, oxidative stress, inflammatory responses, blood brain barrier integrity, and white matter injury. Finally, we review translational strategies to improve function after ischemic brain injury, including new ideas regarding neurorestoration, or neural repair strategies that restore plasticity, at delayed time points after ischemia.
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Affiliation(s)
- Robert M Dietz
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, USA
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, CO, USA
- Neuronal Injury Program, University of Colorado School of Medicine, Aurora, CO, USA
| | - Andra L Dingman
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, USA
- Neuronal Injury Program, University of Colorado School of Medicine, Aurora, CO, USA
| | - Paco S Herson
- Department of Neurological Surgery, The Ohio State University College of Medicine, Columbus, OH, USA
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Hu X, Wang Y, Du W, Liang LJ, Wang W, Jin X. Role of Glial Cell-Derived Oxidative Stress in Blood-Brain Barrier Damage after Acute Ischemic Stroke. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:7762078. [PMID: 36092167 PMCID: PMC9463007 DOI: 10.1155/2022/7762078] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 08/13/2022] [Indexed: 11/18/2022]
Abstract
The integrity of the blood-brain barrier (BBB) is mainly maintained by endothelial cells and basement membrane and could be regulated by pericytes, neurons, and glial cells including astrocytes, microglia, oligodendrocytes (OLs), and oligodendrocyte progenitor cells (OPCs). BBB damage is the main pathological basis of hemorrhage transformation (HT) and vasogenic edema after stroke. In addition, BBB damage-induced HT and vasogenic edema will aggravate the secondary brain tissue damage. Of note, after reperfusion, oxidative stress-initiated cascade plays a critical role in the BBB damage after acute ischemic stroke (AIS). Although endothelial cells are the target of oxidative stress, the role of glial cell-derived oxidative stress in BBB damage after AIS also should receive more attention. In the current review, we first introduce the physiology and pathophysiology of the BBB, then we summarize the possible mechanisms related to BBB damage after AIS. We aim to characterize the role of glial cell-derived oxidative stress in BBB damage after AIS and discuss the role of oxidative stress in astrocytes, microglia cells and oligodendrocytes in after AIS, respectively.
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Affiliation(s)
- Xiaoyan Hu
- Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Department of Histology and Embryology, School of Basic Medical Sciences, Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing 100069, China
| | - Yanping Wang
- Department of Neurology, The Second Hospital of Jiaxing City, Jiaxing, 314000 Zhejiang, China
| | - Weihong Du
- Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Department of Histology and Embryology, School of Basic Medical Sciences, Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing 100069, China
| | - Li-Jun Liang
- Children's Hospital of Shanxi Province, Taiyuan, Shanxi Province, China
| | - Wei Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
| | - Xinchun Jin
- Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Department of Histology and Embryology, School of Basic Medical Sciences, Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing 100069, China
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Vyushina AV, Pritvorova AV, Semenova OG, Ordyan NE. The Effect of Prenatal Stress on Glutathione-Associated Antioxidant Enzyme Activity in Subcellular Fractions of Neocortical Neurons and Neuroglia of Rats during the Period of Intensive Myelination. NEUROCHEM J+ 2022. [DOI: 10.1134/s1819712422030138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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11
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Rayasam A, Fukuzaki Y, Vexler ZS. Microglia-leucocyte axis in cerebral ischaemia and inflammation in the developing brain. Acta Physiol (Oxf) 2021; 233:e13674. [PMID: 33991400 DOI: 10.1111/apha.13674] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 05/06/2021] [Accepted: 05/08/2021] [Indexed: 12/13/2022]
Abstract
Development of the Central Nervous System (CNS) is reliant on the proper function of numerous intricately orchestrated mechanisms that mature independently, including constant communication between the CNS and the peripheral immune system. This review summarizes experimental knowledge of how cerebral ischaemia in infants and children alters physiological communication between leucocytes, brain immune cells, microglia and the neurovascular unit (NVU)-the "microglia-leucocyte axis"-and contributes to acute and long-term brain injury. We outline physiological development of CNS barriers in relation to microglial and leucocyte maturation and the plethora of mechanisms by which microglia and peripheral leucocytes communicate during postnatal period, including receptor-mediated and intracellular inflammatory signalling, lipids, soluble factors and extracellular vesicles. We focus on the "microglia-leucocyte axis" in rodent models of most common ischaemic brain diseases in the at-term infants, hypoxic-ischaemic encephalopathy (HIE) and focal arterial stroke and discuss commonalities and distinctions of immune-neurovascular mechanisms in neonatal and childhood stroke compared to stroke in adults. Given that hypoxic and ischaemic brain damage involve Toll-like receptor (TLR) activation, we discuss the modulatory role of viral and bacterial TLR2/3/4-mediated infection in HIE, perinatal and childhood stroke. Furthermore, we provide perspective of the dynamics and contribution of the axis in cerebral ischaemia depending on the CNS maturational stage at the time of insult, and modulation independently and in consort by individual axis components and in a sex dependent ways. Improved understanding on how to modify crosstalk between microglia and leucocytes will aid in developing age-appropriate therapies for infants and children who suffered cerebral ischaemia.
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Affiliation(s)
- Aditya Rayasam
- Department of Neurology University of California San Francisco San Francisco CA USA
| | - Yumi Fukuzaki
- Department of Neurology University of California San Francisco San Francisco CA USA
| | - Zinaida S. Vexler
- Department of Neurology University of California San Francisco San Francisco CA USA
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12
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Glial Cells as Therapeutic Approaches in Brain Ischemia-Reperfusion Injury. Cells 2021; 10:cells10071639. [PMID: 34208834 PMCID: PMC8305833 DOI: 10.3390/cells10071639] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 06/24/2021] [Accepted: 06/26/2021] [Indexed: 02/07/2023] Open
Abstract
Ischemic stroke is the second cause of mortality and the first cause of long-term disability constituting a serious socioeconomic burden worldwide. Approved treatments include thrombectomy and rtPA intravenous administration, which, despite their efficacy in some cases, are not suitable for a great proportion of patients. Glial cell-related therapies are progressively overcoming inefficient neuron-centered approaches in the preclinical phase. Exploiting the ability of microglia to naturally switch between detrimental and protective phenotypes represents a promising therapeutic treatment, in a similar way to what happens with astrocytes. However, the duality present in many of the roles of these cells upon ischemia poses a notorious difficulty in disentangling the precise pathways to target. Still, promoting M2/A2 microglia/astrocyte protective phenotypes and inhibiting M1/A1 neurotoxic profiles is globally rendering promising results in different in vivo models of stroke. On the other hand, described oligodendrogenesis after brain ischemia seems to be strictly beneficial, although these cells are the less studied players in the stroke paradigm and negative effects could be described for oligodendrocytes in the next years. Here, we review recent advances in understanding the precise role of mentioned glial cell types in the main pathological events of ischemic stroke, including inflammation, blood brain barrier integrity, excitotoxicity, reactive oxygen species management, metabolic support, and neurogenesis, among others, with a special attention to tested therapeutic approaches.
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13
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Li C, Xie Z, Xing Z, Zhu H, Zhou W, Xie S, Zhang Z, Li MH. The Notch Signaling Pathway Regulates Differentiation of NG2 Cells into Oligodendrocytes in Demyelinating Diseases. Cell Mol Neurobiol 2021; 42:1-11. [PMID: 33826017 DOI: 10.1007/s10571-021-01089-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 03/29/2021] [Indexed: 12/13/2022]
Abstract
NG2 cells are highly proliferative glial cells that can self-renew or differentiate into oligodendrocytes, promoting remyelination. Following demyelination, the proliferative and differentiation potentials of NG2 cells increase rapidly, enhancing their differentiation into functional myelinating cells. Levels of the transcription factors Olig1 and Olig2 increase during the differentiation of NG2 cells and play important roles in the development and repair of oligodendrocytes. However, the ability to generate new oligodendrocytes is hampered by injury-related factors (e.g., myelin fragments, Wnt and Notch signaling components), leading to failed differentiation and maturation of NG2 cells into oligodendrocytes. Here, we review Notch signaling as a negative regulator of oligodendrocyte differentiation and discuss the extracellular ligands, intracellular pathways, and key transcription factors involved.
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Affiliation(s)
- Chengcai Li
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, No. 17 Yongwai Zheng Street, Nanchang, 330006, Jiangxi, People's Republic of China
| | - Zhiping Xie
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, No. 17 Yongwai Zheng Street, Nanchang, 330006, Jiangxi, People's Republic of China
| | - Zelong Xing
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, No. 17 Yongwai Zheng Street, Nanchang, 330006, Jiangxi, People's Republic of China
| | - Huaxin Zhu
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, No. 17 Yongwai Zheng Street, Nanchang, 330006, Jiangxi, People's Republic of China
| | - Wu Zhou
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, No. 17 Yongwai Zheng Street, Nanchang, 330006, Jiangxi, People's Republic of China
| | - Shenke Xie
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, No. 17 Yongwai Zheng Street, Nanchang, 330006, Jiangxi, People's Republic of China
| | - Zhixiong Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, No. 17 Yongwai Zheng Street, Nanchang, 330006, Jiangxi, People's Republic of China
| | - Mei-Hua Li
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, No. 17 Yongwai Zheng Street, Nanchang, 330006, Jiangxi, People's Republic of China.
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14
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Zhang Z, Zhou H, Zhou J. Heterogeneity and Proliferative and Differential Regulators of NG2-glia in Physiological and Pathological States. Curr Med Chem 2021; 27:6384-6406. [PMID: 31333083 DOI: 10.2174/0929867326666190717112944] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 06/12/2019] [Accepted: 06/20/2019] [Indexed: 12/16/2022]
Abstract
NG2-glia, also called Oligodendrocyte Precursor Cells (OPCs), account for approximately 5%-10% of the cells in the developing and adult brain and constitute the fifth major cell population in the central nervous system. NG2-glia express receptors and ion channels involved in rapid modulation of neuronal activities and signaling with neuronal synapses, which have functional significance in both physiological and pathological states. NG2-glia participate in quick signaling with peripheral neurons via direct synaptic touches in the developing and mature central nervous system. These distinctive glia perform the unique function of proliferating and differentiating into oligodendrocytes in the early developing brain, which is critical for axon myelin formation. In response to injury, NG2-glia can proliferate, migrate to the lesions, and differentiate into oligodendrocytes to form new myelin sheaths, which wrap around damaged axons and result in functional recovery. The capacity of NG2-glia to regulate their behavior and dynamics in response to neuronal activity and disease indicate their critical role in myelin preservation and remodeling in the physiological state and in repair in the pathological state. In this review, we provide a detailed summary of the characteristics of NG2-glia, including their heterogeneity, the regulators of their proliferation, and the modulators of their differentiation into oligodendrocytes.
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Affiliation(s)
- Zuo Zhang
- National Drug Clinical Trial Institution, the Second Affiliated Hospital, Army Medical University, Chongqing 400037, China
| | - Hongli Zhou
- National Drug Clinical Trial Institution, the Second Affiliated Hospital, Army Medical University, Chongqing 400037, China
| | - Jiyin Zhou
- National Drug Clinical Trial Institution, the Second Affiliated Hospital, Army Medical University, Chongqing 400037, China
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15
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Behrangi N, Lorenz P, Kipp M. Oligodendrocyte Lineage Marker Expression in eGFP-GFAP Transgenic Mice. J Mol Neurosci 2020; 71:2237-2248. [PMID: 33346907 PMCID: PMC8585802 DOI: 10.1007/s12031-020-01771-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 12/02/2020] [Indexed: 12/21/2022]
Abstract
Oligodendrocytes, the myelinating cells of the central nervous system, orchestrate several key cellular functions in the brain and spinal cord, including axon insulation, energy transfer to neurons, and, eventually, modulation of immune responses. There is growing interest for obtaining reliable markers that can specifically label oligodendroglia and their progeny. In many studies, anti-CC1 antibodies, presumably recognizing the protein adenomatous polyposis coli (APC), are used to label mature, myelinating oligodendrocytes. However, it has been discussed whether anti-CC1 antibodies could recognize as well, under pathological conditions, other cell populations, particularly astrocytes. In this study, we used transgenic mice in which astrocytes are labeled by the enhanced green fluorescent protein (eGFP) under the control of the human glial fibrillary acidic protein (GFAP) promoter. By detailed co-localization studies we were able to demonstrate that a significant proportion of eGFP-expressing cells co-express markers of the oligodendrocyte lineage, such as the transcription factor Oligodendrocyte Transcription Factor 2 (OLIG2); the NG2 proteoglycan, also known as chrondroitin sulfate proteoglycan 4 (CSPG4); or APC. The current finding that the GFAP promoter drives transgene expression in cells of the oligodendrocyte lineage should be considered when interpreting results from co-localization studies.
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Affiliation(s)
- Newshan Behrangi
- Institute of Anatomy, Rostock University Medical Center, 18057, Rostock, Germany.,Department of Anatomy II, Ludwig-Maximilians-University of Munich, 80336, Munich, Germany
| | - Peter Lorenz
- Institute of Immunology, Rostock University Medical Center, 18057, Rostock, Germany
| | - Markus Kipp
- Institute of Anatomy, Rostock University Medical Center, 18057, Rostock, Germany. .,Center for Transdisciplinary Neurosciences Rostock (CTNR), Rostock University Medical Center, Gelsheimer Strasse 20, 18147, Rostock, Germany.
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16
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The roles of neuron-NG2 glia synapses in promoting oligodendrocyte development and remyelination. Cell Tissue Res 2020; 381:43-53. [PMID: 32236697 DOI: 10.1007/s00441-020-03195-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 02/20/2020] [Indexed: 12/30/2022]
Abstract
NG2 immunopositive progenitor cells, also simply termed as NG2 glia and thought mainly to be oligodendrocyte precursor cells (OPCs), form synaptic connections with neurons in gray and white matters of brain. One of the most classical features of oligodendrocyte lineage cells is myelination, which will favor neuronal signaling transmission. Thus, is there a causal link between the specific synapses of neuron-NG2 glia and myelination? Building on this, here, we will discuss several relevant issues. First, in order to understand the synapses, it is necessary to integrate the definite inputs onto NG2 glia. We show that the synaptic activities and myelination are not synchronized, so the synapses are more likely to regulate early development of NG2 glia and prepare for myelination. Furthermore, several studies have suggested that the synapses also play a role in recovery of pathological conditions, such as multiple sclerosis (MS). Therefore, elucidating the activities of neuron-NG2 glia synapses will be beneficial for both physiological and pathological conditions. Graphical abstract The existence of neuron-NG2 glia synapses reveals that the neuronal activities projecting to NG2 glia is an elaborate regulation, and the signaling from neurons to NG2 glia is frequent in early stage. The neuron-NG2 glia synapses indirectly provide a basic condition to support myelination by extrasynaptic communication. The neuron-NG2 glia synapses also promote remyelination, and it occurs similar to physiological conditions.
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17
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Belov Kirdajova D, Kriska J, Tureckova J, Anderova M. Ischemia-Triggered Glutamate Excitotoxicity From the Perspective of Glial Cells. Front Cell Neurosci 2020; 14:51. [PMID: 32265656 PMCID: PMC7098326 DOI: 10.3389/fncel.2020.00051] [Citation(s) in RCA: 171] [Impact Index Per Article: 42.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 02/21/2020] [Indexed: 12/21/2022] Open
Abstract
A plethora of neurological disorders shares a final common deadly pathway known as excitotoxicity. Among these disorders, ischemic injury is a prominent cause of death and disability worldwide. Brain ischemia stems from cardiac arrest or stroke, both responsible for insufficient blood supply to the brain parenchyma. Glucose and oxygen deficiency disrupts oxidative phosphorylation, which results in energy depletion and ionic imbalance, followed by cell membrane depolarization, calcium (Ca2+) overload, and extracellular accumulation of excitatory amino acid glutamate. If tight physiological regulation fails to clear the surplus of this neurotransmitter, subsequent prolonged activation of glutamate receptors forms a vicious circle between elevated concentrations of intracellular Ca2+ ions and aberrant glutamate release, aggravating the effect of this ischemic pathway. The activation of downstream Ca2+-dependent enzymes has a catastrophic impact on nervous tissue leading to cell death, accompanied by the formation of free radicals, edema, and inflammation. After decades of “neuron-centric” approaches, recent research has also finally shed some light on the role of glial cells in neurological diseases. It is becoming more and more evident that neurons and glia depend on each other. Neuronal cells, astrocytes, microglia, NG2 glia, and oligodendrocytes all have their roles in what is known as glutamate excitotoxicity. However, who is the main contributor to the ischemic pathway, and who is the unsuspecting victim? In this review article, we summarize the so-far-revealed roles of cells in the central nervous system, with particular attention to glial cells in ischemia-induced glutamate excitotoxicity, its origins, and consequences.
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Affiliation(s)
- Denisa Belov Kirdajova
- Department of Cellular Neurophysiology, Institute of Experimental Medicine, Academy of Sciences of the Czech Republic (ASCR), Prague, Czechia.,Second Faculty of Medicine, Charles University, Prague, Czechia
| | - Jan Kriska
- Department of Cellular Neurophysiology, Institute of Experimental Medicine, Academy of Sciences of the Czech Republic (ASCR), Prague, Czechia.,Second Faculty of Medicine, Charles University, Prague, Czechia
| | - Jana Tureckova
- Department of Cellular Neurophysiology, Institute of Experimental Medicine, Academy of Sciences of the Czech Republic (ASCR), Prague, Czechia
| | - Miroslava Anderova
- Department of Cellular Neurophysiology, Institute of Experimental Medicine, Academy of Sciences of the Czech Republic (ASCR), Prague, Czechia.,Second Faculty of Medicine, Charles University, Prague, Czechia
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18
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Orfila JE, Dietz RM, Rodgers KM, Dingman A, Patsos OP, Cruz-Torres I, Grewal H, Strnad F, Schroeder C, Herson PS. Experimental pediatric stroke shows age-specific recovery of cognition and role of hippocampal Nogo-A receptor signaling. J Cereb Blood Flow Metab 2020; 40:588-599. [PMID: 30762478 PMCID: PMC7026845 DOI: 10.1177/0271678x19828581] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Ischemic stroke is a leading cause of death worldwide and clinical data suggest that children may recover from stroke better than adults; however, supporting experimental data are lacking. We used our novel mouse model of experimental juvenile ischemic stroke (MCAO) to characterize age-specific cognitive dysfunction following ischemia. Juvenile and adult mice subjected to 45-min MCAO, and extracellular field recordings of CA1 neurons were performed to assess hippocampal synaptic plasticity changes after MCAO, and contextual fear conditioning was performed to evaluate memory and biochemistry used to analyze Nogo-A expression. Juvenile mice showed impaired synaptic plasticity seven days after MCAO, followed by full recovery by 30 days. Memory behavior was consistent with synaptic impairments and recovery after juvenile MCAO. Nogo-A expression increased in ipsilateral hippocampus seven days after MCAO compared to contralateral and sham hippocampus. Further, inhibition of Nogo-A receptors reversed MCAO-induced synaptic impairment in slices obtained seven days after juvenile MCAO. Adult MCAO-induced impairment of LTP was not associated with increased Nogo-A. This study demonstrates that stroke causes functional impairment in the hippocampus and recovery of behavioral and synaptic function is more robust in the young brain. Nogo-A receptor activity may account for the impairments seen following juvenile ischemic injury.
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Affiliation(s)
- James E Orfila
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, CO, USA.,Neuronal Injury & Plasticity Program, University of Colorado School of Medicine, Aurora, CO, USA
| | - Robert M Dietz
- Neuronal Injury & Plasticity Program, University of Colorado School of Medicine, Aurora, CO, USA.,Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, USA
| | - Krista M Rodgers
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, CO, USA.,Neuronal Injury & Plasticity Program, University of Colorado School of Medicine, Aurora, CO, USA
| | - Andra Dingman
- Neuronal Injury & Plasticity Program, University of Colorado School of Medicine, Aurora, CO, USA.,Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, USA
| | - Olivia P Patsos
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, CO, USA.,Neuronal Injury & Plasticity Program, University of Colorado School of Medicine, Aurora, CO, USA
| | - Ivelisse Cruz-Torres
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, CO, USA.,Neuronal Injury & Plasticity Program, University of Colorado School of Medicine, Aurora, CO, USA
| | - Himmat Grewal
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, CO, USA.,Neuronal Injury & Plasticity Program, University of Colorado School of Medicine, Aurora, CO, USA
| | - Frank Strnad
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, CO, USA.,Neuronal Injury & Plasticity Program, University of Colorado School of Medicine, Aurora, CO, USA
| | - Christian Schroeder
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, CO, USA.,Neuronal Injury & Plasticity Program, University of Colorado School of Medicine, Aurora, CO, USA
| | - Paco S Herson
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, CO, USA.,Neuronal Injury & Plasticity Program, University of Colorado School of Medicine, Aurora, CO, USA.,Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO, USA
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19
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Dingman AL, Rodgers KM, Dietz RM, Hickey SP, Frazier AP, Clevenger AC, Yonchek JC, Traystman RJ, Macklin WB, Herson PS. Oligodendrocyte Progenitor Cell Proliferation and Fate after White Matter Stroke in Juvenile and Adult Mice. Dev Neurosci 2019; 40:1-16. [PMID: 30861520 DOI: 10.1159/000496200] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 12/06/2018] [Indexed: 11/19/2022] Open
Abstract
The incidence of stroke in children is 2.4 per 100,000 person-years and results in long-term motor and cognitive disability. In ischemic stroke, white matter (WM) is frequently injured, but is relatively understudied compared to grey matter injury. Previous research suggests that the cellular response to WM ischemic injury is different at different ages. Little is known about whether WM repair mechanisms differ in children and adults. We utilized a model of focal ischemic WM injury to determine the oligodendrocyte (OL) response to focal WM ischemic injury in juvenile and adult mice. Methods: Juvenile (21-25 days of age) versus adult (2-3 months of age) mice underwent stereotaxic injection of the potent vasoconstrictor N5-(1-iminoethyhl)-L-ornithine (L-NIO) into the lateral corpus callosum (CC). Animals were sacrificed on postoperative day 3 (acute) or 21 (chronic). Cell birth-dating was performed acutely after WM stroke with 5-ethynyl-2-deoxyuridine (EdU) injected intraperitoneally. Immunohistochemistry was performed, as well as stereology, to measure injury volume. The acute oligodendrocyte progenitor cell (OPC) proliferation and the chronic OL cell fate were determined with immunohistochemistry. Compound action potentials were measured in the CC at acute and chronic time points. Results: Acutely WM injury volume was smaller in juveniles. There was significantly greater OPC proliferation in juvenile animals (acute) compared to adults, but newly born OLs did not survive and mature into myelinating cells at chronic time points. In addition, juveniles did not have improved histological or functional recovery when compared to adults. Protecting newly born OPCs is a potential therapeutic target in children with ischemic stroke.
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Affiliation(s)
- Andra L Dingman
- Division of Child Neurology, Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado, USA,
| | - Krista M Rodgers
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Robert M Dietz
- Division of Neonatology, Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Sean P Hickey
- Department of Cell and Developmental Biology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Alexandra P Frazier
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Amy C Clevenger
- Division of Critical Care Medicine, Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Joan C Yonchek
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Richard J Traystman
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Wendy B Macklin
- Department of Cell and Developmental Biology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Paco S Herson
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, Colorado, USA
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20
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Rodgers KM, Ahrendsen JT, Patsos OP, Strnad FA, Yonchek JC, Traystman RJ, Macklin WB, Herson PS. Endogenous Neuronal Replacement in the Juvenile Brain Following Cerebral Ischemia. Neuroscience 2018; 380:1-13. [PMID: 29649514 DOI: 10.1016/j.neuroscience.2018.03.045] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 03/27/2018] [Indexed: 12/15/2022]
Abstract
Replacement of dead neurons following ischemia, either via enhanced endogenous neurogenesis or stem cell therapy, has long been sought. Unfortunately, while various therapies that enhance neurogenesis or stem cell therapies have proven beneficial in animal models, they have all uniformly failed to truly replace dead neurons in the ischemic core to facilitate long-term recovery. Remarkably, we observe robust repopulation of medium-spiny neurons within the ischemic core of juvenile mice following experimental stroke. Despite extensive neuronal cell death in the injured striatum of both juveniles and adults at acute time points after ischemia (24 h and 7 d), mature newborn neurons replaced lost striatal neurons at 30 d post-ischemia. This neuronal repopulation was found only in juveniles, not adults, and importantly, was accompanied by enhanced post-ischemic behavioral recovery at 30 d. Ablation of neurogenesis using irradiation prevented neuronal replacement and functional recovery in MCAo-injured juvenile mice. In contrast, findings in adults were consistent with previous reports, that newborn neurons failed to mature and died, offering little therapeutic potential. These data provide support for neuronal replacement and consequent functional recovery following ischemic stroke and new targets in the development of novel therapies to treat stroke.
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Affiliation(s)
- Krista M Rodgers
- Department of Anesthesiology, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO 80045, United States; Department of Pharmacology, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO 80045, United States; Neuronal Injury Program, University of Colorado Denver, Anschutz Medial Campus, Aurora, CO 80045, United States.
| | - Jared T Ahrendsen
- Department of Cell and Developmental Biology, University of Colorado School of Medicine, Aurora, CO 80045, United States
| | - Olivia P Patsos
- Department of Anesthesiology, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO 80045, United States; Neuronal Injury Program, University of Colorado Denver, Anschutz Medial Campus, Aurora, CO 80045, United States
| | - Frank A Strnad
- Department of Anesthesiology, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO 80045, United States; Neuronal Injury Program, University of Colorado Denver, Anschutz Medial Campus, Aurora, CO 80045, United States
| | - Joan C Yonchek
- Department of Anesthesiology, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO 80045, United States; Neuronal Injury Program, University of Colorado Denver, Anschutz Medial Campus, Aurora, CO 80045, United States
| | - Richard J Traystman
- Department of Anesthesiology, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO 80045, United States; Department of Pharmacology, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO 80045, United States; Neuronal Injury Program, University of Colorado Denver, Anschutz Medial Campus, Aurora, CO 80045, United States
| | - Wendy B Macklin
- Department of Cell and Developmental Biology, University of Colorado School of Medicine, Aurora, CO 80045, United States.
| | - Paco S Herson
- Department of Anesthesiology, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO 80045, United States; Department of Pharmacology, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO 80045, United States; Neuronal Injury Program, University of Colorado Denver, Anschutz Medial Campus, Aurora, CO 80045, United States
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21
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Newville J, Jantzie LL, Cunningham LA. Embracing oligodendrocyte diversity in the context of perinatal injury. Neural Regen Res 2017; 12:1575-1585. [PMID: 29171412 PMCID: PMC5696828 DOI: 10.4103/1673-5374.217320] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/12/2017] [Indexed: 12/18/2022] Open
Abstract
Emerging evidence is fueling a new appreciation of oligodendrocyte diversity that is overturning the traditional view that oligodendrocytes are a homogenous cell population. Oligodendrocytes of distinct origins, maturational stages, and regional locations may differ in their functional capacity or susceptibility to injury. One of the most unique qualities of the oligodendrocyte is its ability to produce myelin. Myelin abnormalities have been ascribed to a remarkable array of perinatal brain injuries, with concomitant oligodendrocyte dysregulation. Within this review, we discuss new insights into the diversity of the oligodendrocyte lineage and highlight their relevance in paradigms of perinatal brain injury. Future therapeutic development will be informed by comprehensive knowledge of oligodendrocyte pathophysiology that considers the particular facets of heterogeneity that this lineage exhibits.
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Affiliation(s)
- Jessie Newville
- Department of Neurosciences, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Lauren L. Jantzie
- Department of Neurosciences, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
- Department of Pediatrics, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
| | - Lee Anna Cunningham
- Department of Neurosciences, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
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22
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Song FE, Huang JL, Lin SH, Wang S, Ma GF, Tong XP. Roles of NG2-glia in ischemic stroke. CNS Neurosci Ther 2017; 23:547-553. [PMID: 28317272 DOI: 10.1111/cns.12690] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 02/23/2017] [Accepted: 02/24/2017] [Indexed: 12/20/2022] Open
Abstract
Recent studies have shown that a widely distributed class of glial cells, termed NG2-glia, engages in rapid signaling with surrounding neurons through direct synaptic contacts in the developing and mature central nervous system (CNS). This unique glial cell group has a typical function of proliferating and differentiating into oligodendrocytes during early development of the brain, which is crucial to axon myelin formation. Therefore, NG2-glia are also called oligodendrocyte precursor cells (OPCs). In vitro and in vivo studies reveal that NG2-glia expressing receptors and ion channels demonstrate functional significance for rapid signaling with neuronal synapses and modulation of neuronal activities in both physiological and pathological conditions. Although it is well known that NG2-glia play an important role in demyelinating diseases such as multiple sclerosis, little is known about how NG2-glia or OPCs impact neurons and brain function following ischemic injury. This review summarizes recent progress on the roles of NG2-glia in ischemic stroke and illustrates new approaches for targeting NG2-glia in the brain to treat this disease.
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Affiliation(s)
- Fei-Er Song
- Discipline of Neuroscience and Department of Anatomy, Histology and Embryology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jia-Lv Huang
- Department of Clinical Medicine, Research-Based Learning training program (RBL2015-29), Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Si-Han Lin
- Department of Clinical Medicine, Research-Based Learning training program (RBL2015-29), Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shuo Wang
- Department of Clinical Medicine, Research-Based Learning training program (RBL2015-29), Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guo-Fen Ma
- Discipline of Neuroscience and Department of Anatomy, Histology and Embryology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiao-Ping Tong
- Discipline of Neuroscience and Department of Anatomy, Histology and Embryology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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