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Jha RM, Rajasundaram D, Sneiderman C, Schlegel BT, O'Brien C, Xiong Z, Janesko-Feldman K, Trivedi R, Vagni V, Zusman BE, Catapano JS, Eberle A, Desai SM, Jadhav AP, Mihaljevic S, Miller M, Raikwar S, Rani A, Rulney J, Shahjouie S, Raphael I, Kumar A, Phuah CL, Winkler EA, Simon DW, Kochanek PM, Kohanbash G. A single-cell atlas deconstructs heterogeneity across multiple models in murine traumatic brain injury and identifies novel cell-specific targets. Neuron 2024; 112:3069-3088.e4. [PMID: 39019041 DOI: 10.1016/j.neuron.2024.06.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 05/07/2024] [Accepted: 06/20/2024] [Indexed: 07/19/2024]
Abstract
Traumatic brain injury (TBI) heterogeneity remains a critical barrier to translating therapies. Identifying final common pathways/molecular signatures that integrate this heterogeneity informs biomarker and therapeutic-target development. We present the first large-scale murine single-cell atlas of the transcriptomic response to TBI (334,376 cells) across clinically relevant models, sex, brain region, and time as a foundational step in molecularly deconstructing TBI heterogeneity. Results were unique to cell populations, injury models, sex, brain regions, and time, highlighting the importance of cell-level resolution. We identify cell-specific targets and previously unrecognized roles for microglial and ependymal subtypes. Ependymal-4 was a hub of neuroinflammatory signaling. A distinct microglial lineage shared features with disease-associated microglia at 24 h, with persistent gene-expression changes in microglia-4 even 6 months after contusional TBI, contrasting all other cell types that mostly returned to naive levels. Regional and sexual dimorphism were noted. CEREBRI, our searchable atlas (https://shiny.crc.pitt.edu/cerebri/), identifies previously unrecognized cell subtypes/molecular targets and is a leverageable platform for future efforts in TBI and other diseases with overlapping pathophysiology.
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Affiliation(s)
- Ruchira M Jha
- Department of Neurology, Barrow Neurological Institute, Phoenix, AZ 85013, USA; Department of Translational Neuroscience, Barrow Neurological Institute, Phoenix, AZ 85013, USA; Department of Neurosurgery, Barrow Neurological Institute, Phoenix, AZ 85013, USA; Safar Center for Resuscitation-Research, University of Pittsburgh, Pittsburgh, PA 15224, USA; Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA.
| | - Dhivyaa Rajasundaram
- Department of Pediatrics, Division of Health Informatics, University of Pittsburgh, Pittsburgh, PA 15224, USA
| | - Chaim Sneiderman
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Brent T Schlegel
- Department of Pediatrics, Division of Health Informatics, University of Pittsburgh, Pittsburgh, PA 15224, USA
| | - Casey O'Brien
- Department of Pediatrics, Division of Health Informatics, University of Pittsburgh, Pittsburgh, PA 15224, USA
| | - Zujian Xiong
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Keri Janesko-Feldman
- Safar Center for Resuscitation-Research, University of Pittsburgh, Pittsburgh, PA 15224, USA
| | - Ria Trivedi
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Vincent Vagni
- Safar Center for Resuscitation-Research, University of Pittsburgh, Pittsburgh, PA 15224, USA
| | - Benjamin E Zusman
- Department of Neurology, Massachusetts General Hospital, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Joshua S Catapano
- Department of Neurosurgery, Barrow Neurological Institute, Phoenix, AZ 85013, USA
| | - Adam Eberle
- Department of Translational Neuroscience, Barrow Neurological Institute, Phoenix, AZ 85013, USA
| | | | - Ashutosh P Jadhav
- Department of Neurosurgery, Barrow Neurological Institute, Phoenix, AZ 85013, USA
| | - Sandra Mihaljevic
- Department of Translational Neuroscience, Barrow Neurological Institute, Phoenix, AZ 85013, USA
| | - Margaux Miller
- Department of Translational Neuroscience, Barrow Neurological Institute, Phoenix, AZ 85013, USA
| | - Sudhanshu Raikwar
- Department of Translational Neuroscience, Barrow Neurological Institute, Phoenix, AZ 85013, USA
| | - Anupama Rani
- Department of Translational Neuroscience, Barrow Neurological Institute, Phoenix, AZ 85013, USA
| | - Jarrod Rulney
- University of Arizona School of Medicine, Tucson, AZ 85724, USA
| | - Shima Shahjouie
- Department of Translational Neuroscience, Barrow Neurological Institute, Phoenix, AZ 85013, USA; Department of Neurology, Pennsylvania State University, Hershey, PA 17033, USA
| | - Itay Raphael
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Aditya Kumar
- Department of Neurology, Barrow Neurological Institute, Phoenix, AZ 85013, USA; Department of Translational Neuroscience, Barrow Neurological Institute, Phoenix, AZ 85013, USA; Department of Neurosurgery, Barrow Neurological Institute, Phoenix, AZ 85013, USA
| | - Chia-Ling Phuah
- Department of Neurology, Barrow Neurological Institute, Phoenix, AZ 85013, USA; Department of Translational Neuroscience, Barrow Neurological Institute, Phoenix, AZ 85013, USA; Department of Neurosurgery, Barrow Neurological Institute, Phoenix, AZ 85013, USA
| | - Ethan A Winkler
- Neurosurgery, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Dennis W Simon
- Department of Pediatrics, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Patrick M Kochanek
- Safar Center for Resuscitation-Research, University of Pittsburgh, Pittsburgh, PA 15224, USA; Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Gary Kohanbash
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA 15213, USA; Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
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2
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Zhang M, Duan Y, Gan H, Jiang N, Qin L, Luo Y, Palahati A, He Y, Li C, Zhai X. TYROBP serve as potential immune-related signature genes in the acute phase of intracerebral hemorrhage. Sci Rep 2024; 14:20158. [PMID: 39215129 PMCID: PMC11364555 DOI: 10.1038/s41598-024-71132-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 08/26/2024] [Indexed: 09/04/2024] Open
Abstract
The development of intracerebral hemorrhage (ICH) is a dynamic process and intervention during the acute phase of ICH is critical for subsequent recovery. Therefore, it is crucial to screen potential signature genes and therapeutic target genes in the acute phase of ICH. In this study, based on the results of mRNA sequencing in mouse ICH and mRNA sequencing of human ICH from online databases, top five potential signature genes after ICH, Tyrobp, Itgb2, Tlr2, Ptprc and Itgam, were screened. Quantitative PCR results showed higher mRNA expression of Tyrobp, Itgb2, Tlr2, Ptprc, and Itgam in the 1-, 3- and 5-day mouse ICH groups compared to the sham-operated group. Immune infiltration correlation analysis shows that the top-ranked signature gene, Tyrobp, is negatively correlated with M2 macrophages and plasma cells, and Western blot analysis shows higher expression of the Tyrobp protein in the 1-, 3-, and 5-day mouse ICH groups compared to the sham-operated group. Furthermore, immunohistochemistry revealed that TYROBP protein expression was significantly higher in human ICH tissues than in normal brain tissues. Our results suggest that Tyrobp is a signature gene in the acute phase of ICH and may be a potential target for the treatment of the acute phase of ICH.
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Affiliation(s)
- Mi Zhang
- Department of Neurosurgery, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Neurodevelopment and Cognitive Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 401122, China
- Institute of Neuroscience, School of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Yuhao Duan
- Department of Neurosurgery, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Neurodevelopment and Cognitive Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 401122, China
- Institute of Neuroscience, School of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Hui Gan
- Department of Neurosurgery, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Neurodevelopment and Cognitive Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 401122, China
- Institute of Neuroscience, School of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Ning Jiang
- Department of Pathology, Chongqing Medical University, Chongqing, 400016, China
| | - Le Qin
- Department of Neurosurgery, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Neurodevelopment and Cognitive Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 401122, China
- Institute of Neuroscience, School of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Yujia Luo
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Ailiyaer Palahati
- Department of Neurosurgery, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Neurodevelopment and Cognitive Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 401122, China
- Institute of Neuroscience, School of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Yaying He
- Department of Neurosurgery, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Neurodevelopment and Cognitive Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 401122, China
- Institute of Neuroscience, School of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Chenyang Li
- Department of Neurosurgery, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Neurodevelopment and Cognitive Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 401122, China
- Institute of Neuroscience, School of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Xuan Zhai
- Department of Neurosurgery, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Neurodevelopment and Cognitive Disorders, Children's Hospital of Chongqing Medical University, Chongqing, 401122, China.
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3
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Gober IG, Russell AL, Shick TJ, Vagni VA, Carlson JC, Kochanek PM, Wagner AK. Exploratory assessment of the effect of systemic administration of soluble glycoprotein 130 on cognitive performance and chemokine levels in a mouse model of experimental traumatic brain injury. J Neuroinflammation 2024; 21:149. [PMID: 38840141 PMCID: PMC11155101 DOI: 10.1186/s12974-024-03129-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 05/12/2024] [Indexed: 06/07/2024] Open
Abstract
Uncontrolled neuroinflammation mediates traumatic brain injury (TBI) pathology and impairs recovery. Interleukin-6 (IL-6), a pleiotropic inflammatory regulator, is associated with poor clinical TBI outcomes. IL-6 operates via classical-signaling through membrane-bound IL-6 receptor (IL-6R) and trans-signaling through soluble IL-6 receptor (s)IL-6R. IL-6 trans-signaling specifically contributes to neuropathology, making it a potential precision therapeutic TBI target. Soluble glycoprotein 130 (sgp130) prevents IL-6 trans-signaling, sparing classical signaling, thus is a possible treatment. Mice received either controlled cortical impact (CCI) (6.0 ± 0.2 m/s; 2 mm; 50-60ms) or sham procedures. Vehicle (VEH) or sgp130-Fc was subcutaneously administered to sham (VEH or 1 µg) and CCI (VEH, 0.25 µg or 1 µg) mice on days 1, 4, 7, 10 and 13 post-surgery to assess effects on cognition [Morris Water Maze (MWM)] and ipsilateral hemisphere IL-6 related biomarkers (day 21 post-surgery). CCI + sgp130-Fc groups (0.25 µg and 1 µg) were combined for analysis given similar behavior/biomarker outcomes. CCI + VEH mice had longer latencies and path lengths to the platform and increased peripheral zone time versus Sham + VEH and Sham + sgp130-Fc mice, suggesting injury-induced impairments in learning and anxiety. CCI + sgp130-Fc mice had shorter platform latencies and path lengths and had decreased peripheral zone time, indicating a therapeutic benefit of sgp130-Fc after injury on learning and anxiety. Interestingly, Sham + sgp130-Fc mice had shorter platform latencies, path lengths and peripheral zone times than Sham + VEH mice, suggesting a beneficial effect of sgp130-Fc, independent of injury. CCI + VEH mice had increased brain IL-6 and decreased sgp130 levels versus Sham + VEH and Sham + sgp130-Fc mice. There was no treatment effect on IL-6, sIL6-R or sgp130 in Sham + VEH versus Sham + sgp130-Fc mice. There was also no treatment effect on IL-6 in CCI + VEH versus CCI + sgp130-Fc mice. However, CCI + sgp130-Fc mice had increased sIL-6R and sgp130 versus CCI + VEH mice, demonstrating sgp130-Fc treatment effects on brain biomarkers. Inflammatory chemokines (MIP-1β, IP-10, MIG) were increased in CCI + VEH mice versus Sham + VEH and Sham + sgp130-Fc mice. However, CCI + sgp130-Fc mice had decreased chemokine levels versus CCI + VEH mice. IL-6 positively correlated, while sgp130 negatively correlated, with chemokine levels. Overall, we found that systemic sgp130-Fc treatment after CCI improved learning, decreased anxiety and reduced CCI-induced brain chemokines. Future studies will explore sex-specific dosing and treatment mechanisms for sgp130-Fc therapy.
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Affiliation(s)
- Ian G Gober
- Department of Physical Medicine and Rehabilitation, School of Medicine, University of Pittsburgh, 3471 Fifth Avenue, Suite 910, Pittsburgh, PA, 15213, USA
- Safar Center for Resuscitation Research, John G. Rangos Research Center, Pittsburgh, PA, USA
| | - Ashley L Russell
- Department of Physical Medicine and Rehabilitation, School of Medicine, University of Pittsburgh, 3471 Fifth Avenue, Suite 910, Pittsburgh, PA, 15213, USA
- Safar Center for Resuscitation Research, John G. Rangos Research Center, Pittsburgh, PA, USA
| | - Tyler J Shick
- Department of Physical Medicine and Rehabilitation, School of Medicine, University of Pittsburgh, 3471 Fifth Avenue, Suite 910, Pittsburgh, PA, 15213, USA
- Safar Center for Resuscitation Research, John G. Rangos Research Center, Pittsburgh, PA, USA
| | - Vincent A Vagni
- Safar Center for Resuscitation Research, John G. Rangos Research Center, Pittsburgh, PA, USA
- Department of Critical Care Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Jenna C Carlson
- Department of Biostatistics, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Human Genetics, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Patrick M Kochanek
- Safar Center for Resuscitation Research, John G. Rangos Research Center, Pittsburgh, PA, USA
- Department of Critical Care Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Amy K Wagner
- Department of Physical Medicine and Rehabilitation, School of Medicine, University of Pittsburgh, 3471 Fifth Avenue, Suite 910, Pittsburgh, PA, 15213, USA.
- Safar Center for Resuscitation Research, John G. Rangos Research Center, Pittsburgh, PA, USA.
- Center for Neuroscience, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
- Department of Neuroscience, School of Arts and Sciences, University of Pittsburgh, Pittsburgh, PA, USA.
- Clinical and Translational Science Institute, University of Pittsburgh, Pittsburgh, PA, USA.
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4
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Leonard J, Wei X, Browning J, Gudenschwager-Basso EK, Li J, Harris EA, Olsen ML, Theus MH. Transcriptomic alterations in cortical astrocytes following the development of post-traumatic epilepsy. Sci Rep 2024; 14:8367. [PMID: 38600221 PMCID: PMC11006850 DOI: 10.1038/s41598-024-58904-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 04/04/2024] [Indexed: 04/12/2024] Open
Abstract
Post-traumatic epilepsy (PTE) stands as one of the numerous debilitating consequences that follow traumatic brain injury (TBI). Despite its impact on many individuals, the current landscape offers only a limited array of reliable treatment options, and our understanding of the underlying mechanisms and susceptibility factors remains incomplete. Among the potential contributors to epileptogenesis, astrocytes, a type of glial cell, have garnered substantial attention as they are believed to promote hyperexcitability and the development of seizures in the brain following TBI. The current study evaluated the transcriptomic changes in cortical astrocytes derived from animals that developed seizures as a result of severe focal TBI. Using RNA-Seq and ingenuity pathway analysis (IPA), we unveil a distinct gene expression profile in astrocytes, including alterations in genes supporting inflammation, early response modifiers, and neuropeptide-amidating enzymes. The findings underscore the complex molecular dynamics in astrocytes during PTE development, offering insights into therapeutic targets and avenues for further exploration.
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Affiliation(s)
- John Leonard
- Department of Biomedical Sciences and Pathobiology, Faculty of Health Sciences, Virginia Tech, 970 Washington Street SW, Life Sciences I; Rm 249 (MC0910), Blacksburg, VA, 24061, USA
| | - Xiaoran Wei
- School of Neuroscience, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Jack Browning
- School of Neuroscience, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Erwin Kristobal Gudenschwager-Basso
- Department of Biomedical Sciences and Pathobiology, Faculty of Health Sciences, Virginia Tech, 970 Washington Street SW, Life Sciences I; Rm 249 (MC0910), Blacksburg, VA, 24061, USA
| | - Jiangtao Li
- School of Neuroscience, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Elizabeth A Harris
- Department of Biomedical Sciences and Pathobiology, Faculty of Health Sciences, Virginia Tech, 970 Washington Street SW, Life Sciences I; Rm 249 (MC0910), Blacksburg, VA, 24061, USA
| | - Michelle L Olsen
- School of Neuroscience, Virginia Tech, Blacksburg, VA, 24061, USA
| | - Michelle H Theus
- Department of Biomedical Sciences and Pathobiology, Faculty of Health Sciences, Virginia Tech, 970 Washington Street SW, Life Sciences I; Rm 249 (MC0910), Blacksburg, VA, 24061, USA.
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5
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Strehle LD, Otto-Dobos LD, Grant CV, Glasper ER, Pyter LM. Microglia contribute to mammary tumor-induced neuroinflammation in a female mouse model. FASEB J 2024; 38:e23419. [PMID: 38236370 PMCID: PMC10832463 DOI: 10.1096/fj.202301580rr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 11/13/2023] [Accepted: 12/27/2023] [Indexed: 01/19/2024]
Abstract
Following diagnosis but before treatment, up to 30% of breast cancer patients report behavioral side effects (e.g., anxiety, depression, memory impairment). Our rodent mammary tumor model recapitulates aspects of these behavioral sequelae, as well as elevated circulating and brain inflammatory mediators. Neuroinflammation is a proposed mechanism underlying the etiology of mood disorders and cognitive deficits, and therefore may be contributing to tumor-associated behavioral side effects. The cellular mechanisms by which tumor-induced neuroinflammation occurs remain unknown, making targeted treatment approaches inaccessible. Here, we tested the hypotheses that microglia are the primary cells driving tumor-induced neuroinflammation and behavioral side effects. Young adult female BALB/c mice were induced with a 67NR mammary tumor; tumor-free controls underwent a sham surgery. Mammary tumors increased IBA1+ and GFAP+ staining in the amygdala and hippocampus relative to tumor-free controls. However, tumors did not alter gene expression of Percoll-enriched microglia isolated from the whole brain. While cognitive, social, and anhedonia-like behaviors were not altered in tumor-bearing mice, tumors increased central tendency in the open-field test; microglia depletion did not reverse this effect. Brain region RT-qPCR data indicated that microglia depletion attenuated tumor-induced elevations of neuroinflammatory gene expression in a region- and mediator-specific manner. These results indicate a causal role of microglia in tumor-induced neuroinflammation. This research advances our understanding of the cellular mechanisms underlying tumor-induced neuroinflammation in order to understand how brain responses (e.g., behavior) may be altered with subsequent cancer-related immune challenges.
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Affiliation(s)
- Lindsay D. Strehle
- Institute for Behavioral Medicine Research, Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Lauren D. Otto-Dobos
- Institute for Behavioral Medicine Research, Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Corena V. Grant
- Institute for Behavioral Medicine Research, Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Erica R. Glasper
- Institute for Behavioral Medicine Research, Ohio State University Wexner Medical Center, Columbus, OH, USA
- Department of Neuroscience, Ohio State University, Columbus, OH, USA
| | - Leah M. Pyter
- Institute for Behavioral Medicine Research, Ohio State University Wexner Medical Center, Columbus, OH, USA
- Department of Psychiatry and Behavioral Health, Ohio State University, Columbus, OH, USA
- Department of Neuroscience, Ohio State University, Columbus, OH, USA
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6
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Situ M, Citalan-Madrid AF, Stamatovic SM, Keep RF, Andjelkovic AV. Transcriptomic Profile of Blood–Brain Barrier Remodeling in Cerebral Amyloid Angiopathy. Front Cell Neurosci 2022; 16:931247. [PMID: 35813502 PMCID: PMC9257207 DOI: 10.3389/fncel.2022.931247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 05/30/2022] [Indexed: 12/16/2022] Open
Abstract
Cerebral amyloid angiopathy (CAA) is a small vessel disease characterized by amyloid β (Aβ) peptide deposition within the walls of medium to small-caliber blood vessels, cerebral microhemorrhage, and blood–brain barrier (BBB) leakage. It is commonly associated with late-stage Alzheimer’s disease. BBB dysfunction is indicated as a pathological substrate for CAA progression with hyperpermeability, enhancing the extravasation of plasma components and inducing neuroinflammation, further worsening BBB injury and contributing to cognitive decline. Although significant effort has been made in defining the gene mutations and risk factors involved in microvascular alterations with vascular dementia and Alzheimer’s disease, the intra- and intercellular pathogenic mechanisms responsible for vascular hyperpermeability are still largely unknown. The present study aimed to elucidate the transcriptional profile of the cerebral microvessels (BBB) in a murine model with CAA vasculopathy to define potential causes and underlying mechanisms of BBB injury. A comprehensive RNA sequencing analysis was performed of CAA vasculopathy in Tg-SwDI mice at 6 and 18 months in comparison to age-matched wildtype controls to examine how age and amyloid accumulation impact the transcriptional signature of the BBB. Results indicate that Aβ has a critical role in triggering brain endothelial cell and BBB dysfunction in CAA vasculopathy, causing an intense proinflammatory response, impairing oxidative metabolism, altering the coagulation status of brain endothelial cells, and remodeling barrier properties. The proinflammatory response includes both adaptive and innate immunity, with pronounced induction of genes that regulate macrophage/microglial activation and chemokines/adhesion molecules that support T and B cell transmigration. Age has an important impact on the effects of Aβ, increasing the BBB injury in CAA vasculopathy. However, early inflammation, particularly microglia/macrophage activation and the mediators of B lymphocytes’ activities are underlying processes of BBB hyperpermeability and cerebral microbleeds in the early stage of CAA vasculopathy. These findings reveal a specific profile of the CAA-associated BBB injury that leads to a full progression of CAA.
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Affiliation(s)
- Muyu Situ
- Neuroscience Graduate Program, University of Michigan Medical School, Ann Arbor, MI, United States
| | | | - Svetlana M. Stamatovic
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Richard F. Keep
- Department of Neurosurgery, University of Michigan Medical School, Ann Arbor, MI, United States
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Anuska V. Andjelkovic
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, United States
- Department of Neurosurgery, University of Michigan Medical School, Ann Arbor, MI, United States
- *Correspondence: Anuska V. Andjelkovic,
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7
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Zheng RZ, Lee KY, Qi ZX, Wang Z, Xu ZY, Wu XH, Mao Y. Neuroinflammation Following Traumatic Brain Injury: Take It Seriously or Not. Front Immunol 2022; 13:855701. [PMID: 35392083 PMCID: PMC8981520 DOI: 10.3389/fimmu.2022.855701] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 02/23/2022] [Indexed: 12/30/2022] Open
Abstract
Traumatic brain injury (TBI) is associated with high mortality and disability, with a substantial socioeconomic burden. With the standardization of the treatment process, there is increasing interest in the role that the secondary insult of TBI plays in outcome heterogeneity. The secondary insult is neither detrimental nor beneficial in an absolute sense, among which the inflammatory response was a complex cascade of events and can thus be regarded as a double-edged sword. Therefore, clinicians should take the generation and balance of neuroinflammation following TBI seriously. In this review, we summarize the current human and animal model studies of neuroinflammation and provide a better understanding of the inflammatory response in the different stages of TBI. In particular, advances in neuroinflammation using proteomic and transcriptomic techniques have enabled us to identify a functional specific delineation of the immune cell in TBI patients. Based on recent advances in our understanding of immune cell activation, we present the difference between diffuse axonal injury and focal brain injury. In addition, we give a figurative profiling of the general paradigm in the pre- and post-injury inflammatory settings employing a bow-tie framework.
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Affiliation(s)
- Rui-Zhe Zheng
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China.,National Center for Neurological Disorders, Shanghai, China.,Shanghai Key Laboratory of Brain Function and Restoration and Neural Regeneration, Shanghai, China.,Neurosurgical Institute of Fudan University, Shanghai, China.,Shanghai Clinical Medical Center of Neurosurgery, Shanghai, China.,State Key Laboratory of Medical Neurobiology and Ministry of Education (MOE) Frontiers Center for Brain Science, School of Basic Medical Sciences and Institutes of Brain Science, Fudan University, Shanghai, China
| | - Kuin-Yu Lee
- Department of Integrative Medicine and Neurobiology, Institute of Integrative Medicine of Fudan University Institute of Brain Science, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Zeng-Xin Qi
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China.,National Center for Neurological Disorders, Shanghai, China.,Shanghai Key Laboratory of Brain Function and Restoration and Neural Regeneration, Shanghai, China.,Neurosurgical Institute of Fudan University, Shanghai, China.,Shanghai Clinical Medical Center of Neurosurgery, Shanghai, China.,State Key Laboratory of Medical Neurobiology and Ministry of Education (MOE) Frontiers Center for Brain Science, School of Basic Medical Sciences and Institutes of Brain Science, Fudan University, Shanghai, China
| | - Zhe Wang
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China.,National Center for Neurological Disorders, Shanghai, China.,Shanghai Key Laboratory of Brain Function and Restoration and Neural Regeneration, Shanghai, China.,Neurosurgical Institute of Fudan University, Shanghai, China.,Shanghai Clinical Medical Center of Neurosurgery, Shanghai, China.,State Key Laboratory of Medical Neurobiology and Ministry of Education (MOE) Frontiers Center for Brain Science, School of Basic Medical Sciences and Institutes of Brain Science, Fudan University, Shanghai, China
| | - Ze-Yu Xu
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China.,National Center for Neurological Disorders, Shanghai, China.,Shanghai Key Laboratory of Brain Function and Restoration and Neural Regeneration, Shanghai, China.,Neurosurgical Institute of Fudan University, Shanghai, China.,Shanghai Clinical Medical Center of Neurosurgery, Shanghai, China.,State Key Laboratory of Medical Neurobiology and Ministry of Education (MOE) Frontiers Center for Brain Science, School of Basic Medical Sciences and Institutes of Brain Science, Fudan University, Shanghai, China
| | - Xue-Hai Wu
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China.,National Center for Neurological Disorders, Shanghai, China.,Shanghai Key Laboratory of Brain Function and Restoration and Neural Regeneration, Shanghai, China.,Neurosurgical Institute of Fudan University, Shanghai, China.,Shanghai Clinical Medical Center of Neurosurgery, Shanghai, China.,State Key Laboratory of Medical Neurobiology and Ministry of Education (MOE) Frontiers Center for Brain Science, School of Basic Medical Sciences and Institutes of Brain Science, Fudan University, Shanghai, China
| | - Ying Mao
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China.,National Center for Neurological Disorders, Shanghai, China.,Shanghai Key Laboratory of Brain Function and Restoration and Neural Regeneration, Shanghai, China.,Neurosurgical Institute of Fudan University, Shanghai, China.,Shanghai Clinical Medical Center of Neurosurgery, Shanghai, China.,State Key Laboratory of Medical Neurobiology and Ministry of Education (MOE) Frontiers Center for Brain Science, School of Basic Medical Sciences and Institutes of Brain Science, Fudan University, Shanghai, China
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