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Jiang H, Giarratana AO, Theis T, Nagaraj V, Zhou X, Thakker-Varia S, Schachner M, Alder J. Single Nucleotide Polymorphism in Cell Adhesion Molecule L1 Affects Learning and Memory in a Mouse Model of Traumatic Brain Injury. Int J Mol Sci 2024; 25:3043. [PMID: 38474289 DOI: 10.3390/ijms25053043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 03/02/2024] [Indexed: 03/14/2024] Open
Abstract
The L1 cell adhesion molecule (L1) has demonstrated a range of beneficial effects in animal models of spinal cord injury, neurodegenerative disease, and ischemia; however, the role of L1 in TBI has not been fully examined. Mutations in the L1 gene affecting the extracellular domain of this type 1 transmembrane glycoprotein have been identified in patients with L1 syndrome. These patients suffer from hydrocephalus, MASA (mental retardation, adducted thumbs, shuffling gait, aphasia) symptoms, and corpus callosum agenesis. Clinicians have observed that recovery post-traumatic brain injury (TBI) varies among the population. This variability may be explained by the genetic differences present in the general population. In this study, we utilized a novel mouse model of L1 syndrome with a mutation at aspartic acid position 201 in the extracellular domain of L1 (L1-201). We assessed the impact of this specific single nucleotide polymorphism (SNP) localized to the X-chromosome L1 gene on recovery outcomes following TBI by comparing the L1-201 mouse mutants with their wild-type littermates. We demonstrate that male L1-201 mice exhibit significantly worse learning and memory outcomes in the Morris water maze after lateral fluid percussion (LFP) injury compared to male wild-type mice and a trend to worse motor function on the rotarod. However, no significant changes were observed in markers for inflammatory responses or apoptosis after TBI.
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Affiliation(s)
- Haoyu Jiang
- Neuroscience and Cell Biology, Rutgers Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA
| | - Anna O Giarratana
- Neuroscience and Cell Biology, Rutgers Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA
| | - Thomas Theis
- Cell Biology and Neuroscience, Rutgers School of Arts and Sciences, Piscataway, NJ 08854, USA
| | - Vini Nagaraj
- Cell Biology and Neuroscience, Rutgers School of Arts and Sciences, Piscataway, NJ 08854, USA
| | - Xiaofeng Zhou
- Neuroscience and Cell Biology, Rutgers Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA
| | - Smita Thakker-Varia
- Neuroscience and Cell Biology, Rutgers Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA
| | - Melitta Schachner
- Cell Biology and Neuroscience, Rutgers School of Arts and Sciences, Piscataway, NJ 08854, USA
| | - Janet Alder
- Neuroscience and Cell Biology, Rutgers Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA
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2
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Protective Effect of Lutein/Zeaxanthin Isomers in Traumatic Brain Injury in Mice. Neurotox Res 2021; 39:1543-1550. [PMID: 34129176 DOI: 10.1007/s12640-021-00385-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 05/28/2021] [Accepted: 06/07/2021] [Indexed: 12/20/2022]
Abstract
Previous studies revealed that oxidative stress and inflammation are the main contributors to secondary injury after traumatic brain injury (TBI). In an earlier study, we reported that lutein/zeaxanthin isomers (L/Zi) exert antioxidative and anti-inflammatory effects by activating the nuclear factor-kappa B (NF-κB) and nuclear factor-erythroid 2-related factor 2 (Nrf2) pathways. However, its precise role and underlying mechanisms were largely unknown after TBI. This study was conducted to investigate the potential mechanism of L/Zi isomers in a TBI model induced by a cold injury model in mice. To investigate the effects of L/Zi, male C57BL/6j mice-induced brain injury using the cold trauma model was allocated into two groups (n = 7): (i) TBI + vehicle group and (ii) TBI + L/Zi group (20 mg/kg BW). Brain samples were collected 24 h later for analyses. L/Zi given immediately after the injury decreased infarct volume and blood-brain barrier (BBB) permeability; L/Zi treatment also significantly reduced proinflammatory cytokines, including interleukin1 beta (IL-1β), interleukin 6 (IL-6), and NF-κB levels and increased growth-associated protein 43 (GAP-43), neural cell adhesion molecule (NCAM), brain-derived neurotrophic factor (BDNF), and Nrf2 levels compared with vehicle control. These data suggest that L/Zi improves mitochondrial function in TBI models, possibly decreasing inflammation and activating the Nrf2 pathway.
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Almeida MF, Piehler T, Carstens KE, Zhao M, Samadi M, Dudek SM, Norton CJ, Parisian CM, Farizatto KL, Bahr BA. Distinct and dementia-related synaptopathy in the hippocampus after military blast exposures. Brain Pathol 2021; 31:e12936. [PMID: 33629462 PMCID: PMC8412116 DOI: 10.1111/bpa.12936] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 11/19/2020] [Accepted: 01/05/2021] [Indexed: 12/13/2022] Open
Abstract
Explosive shockwaves, and other types of blast exposures, are linked to injuries commonly associated with military service and to an increased risk for the onset of dementia. Neurological complications following a blast injury, including depression, anxiety, and memory problems, often persist even when brain damage is undetectable. Here, hippocampal explants were exposed to the explosive 1,3,5-trinitro-1,3,5-triazinane (RDX) to identify indicators of blast-induced changes within important neuronal circuitries. Highly controlled detonations of small, 1.7-gram RDX spherical charges reduced synaptic markers known to be downregulated in cognitive disorders, but without causing overt neuronal loss or astroglial responses. In the absence of neuromorphological alterations, levels of synaptophysin, GluA1, and synapsin IIb were significantly diminished within 24 hr, and these synaptic components exhibited progressive reductions following blast exposure as compared to their stable maintenance in control explants. In contrast, labeling of the synapsin IIa isoform remained unaltered, while neuropilar staining of other markers decreased, including synapsin IIb and neural cell adhesion molecule (NCAM) isoforms, along with evidence of NCAM proteolytic breakdown. NCAM180 displayed a distinct decline after the RDX blasts, whereas NCAM140 and NCAM120 exhibited smaller or no deterioration, respectively. Interestingly, the extent of synaptic marker reduction correlated with AT8-positive tau levels, with tau pathology stochastically found in CA1 neurons and their dendrites. The decline in synaptic components was also reflected in the size of evoked postsynaptic currents recorded from CA1 pyramidals, which exhibited a severe and selective reduction. The identified indicators of blast-mediated synaptopathy point to the need for early biomarkers of explosives altering synaptic integrity with links to dementia risk, to advance strategies for both cognitive health and therapeutic monitoring.
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Affiliation(s)
- Michael F. Almeida
- Biotechnology Research and Training CenterUniversity of North Carolina—PembrokePembrokeNCUSA
| | - Thuvan Piehler
- U.S. Army Research LaboratoryAberdeen Proving GroundMDUSA
| | - Kelly E. Carstens
- Neurobiology LaboratoryNational Institute of Environmental Health SciencesResearch Triangle ParkNCUSA
- Present address:
Center for Computational Toxicology and ExposureU.S. Environmental Protection AgencyResearch Triangle ParkNCUSA
| | - Meilan Zhao
- Neurobiology LaboratoryNational Institute of Environmental Health SciencesResearch Triangle ParkNCUSA
| | - Mahsa Samadi
- Neurobiology LaboratoryNational Institute of Environmental Health SciencesResearch Triangle ParkNCUSA
- Present address:
Faculty of Medicine CentreImperial College LondonLondonUK
| | - Serena M. Dudek
- Neurobiology LaboratoryNational Institute of Environmental Health SciencesResearch Triangle ParkNCUSA
| | - Christopher J. Norton
- Biotechnology Research and Training CenterUniversity of North Carolina—PembrokePembrokeNCUSA
| | - Catherine M. Parisian
- Biotechnology Research and Training CenterUniversity of North Carolina—PembrokePembrokeNCUSA
| | - Karen L.G. Farizatto
- Biotechnology Research and Training CenterUniversity of North Carolina—PembrokePembrokeNCUSA
| | - Ben A. Bahr
- Biotechnology Research and Training CenterUniversity of North Carolina—PembrokePembrokeNCUSA
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4
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Chavez-Valdez R, Lechner C, Emerson P, Northington FJ, Martin LJ. Accumulation of PSA-NCAM marks nascent neurodegeneration in the dorsal hippocampus after neonatal hypoxic-ischemic brain injury in mice. J Cereb Blood Flow Metab 2021; 41:1039-1057. [PMID: 32703109 PMCID: PMC8054724 DOI: 10.1177/0271678x20942707] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Neonatal hypoxia-ischemia (nHI) disrupts hippocampal GABAergic development leading to memory deficits in mice. Polysialic-acid neural-cell adhesion molecule (PSA-NCAM) developmentally declines to trigger GABAergic maturation. We hypothesized that nHI changes PSA-NCAM abundance and cellular distribution, impairing GABAergic development, and marking nascent neurodegeneration. Cell degeneration, atrophy, and PSA-NCAM immunoreactivity (IR) were measured in CA1 of nHI-injured C57BL6 mice related to: (i) cellular subtype markers; (ii) GAD65/67 and synatophysin (SYP), pre-synaptic markers; (iii) phospho-Ser396Tau, cytoskeletal marker; and (iv) GAP43, axonalregeneration marker. PSA-NCAM IR was minimal in CA1 of shams at P11. After nHI, PSA-NCAM IR was increased in injured pyramidal cells (PCs), minimal in parvalbumin (PV)+INs, and absent in glia. PSA-NCAM IR correlated with injury severity and became prominent in perikaryal cytoplasm at P18. GAD65/67 and SYP IRs only weakly related to PSA-NCAM after nHI. Injured phospho-Ser396Tau+ PCs and PV+INs variably co-expressed PSA-NCAM at P40. While PCs with cytoplasmic marginalized PSA-NCAM had increased perisomatic GAP43, those with perikaryal cytoplasmic PSA-NCAM had minimal GAP43. PSA-NCAM increased in serum of nHI-injured mice. Increased PSA-NCAM is likely a generic acute response to nHI brain injury. PSA-NCAM aberrant cellular localization may aggravate neuronal degeneration. The significance of PSA-NCAM as a biomarker of recovery from nHI and nascent neurodegeneration needs further study.
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Affiliation(s)
- Raul Chavez-Valdez
- Division of Neonatology, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Charles Lechner
- Division of Neonatology, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Paul Emerson
- Department of Neuroscience, Johns Hopkins University, Baltimore, MD, USA
| | - Frances J Northington
- Division of Neonatology, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Lee J Martin
- Department of Neuroscience, Johns Hopkins University, Baltimore, MD, USA.,Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Saini V, Kaur T, Kalotra S, Kaur G. The neuroplasticity marker PSA-NCAM: Insights into new therapeutic avenues for promoting neuroregeneration. Pharmacol Res 2020; 160:105186. [DOI: 10.1016/j.phrs.2020.105186] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 08/25/2020] [Accepted: 08/30/2020] [Indexed: 02/06/2023]
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Lee SW, Jang MS, Jeong SH, Kim H. Exploratory, cognitive, and depressive-like behaviors in adult and pediatric mice exposed to controlled cortical impact. Clin Exp Emerg Med 2019; 6:125-137. [PMID: 31261483 PMCID: PMC6614057 DOI: 10.15441/ceem.18.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 05/17/2018] [Indexed: 12/13/2022] Open
Abstract
Objective Sequelae of behavioral impairments associated with human traumatic brain injury (TBI) include neurobehavioral problems. We compared exploratory, cognitive, and depressive-like behaviors in pediatric and adult male mice exposed to controlled cortical impact (CCI). Methods Pediatric (21 to 25 days old) and adult (8 to 12 weeks old) male C57Bl/6 mice underwent CCI at a 2-mm depth of deflection. Hematoxylin and eosin staining was performed 3 to 7 days after recovery from CCI, and injury volume was analyzed using ImageJ. Neurobehavioral characterization after CCI was performed using the Barnes maze test (BMT), passive avoidance test, open-field test, light/dark test, tail suspension test, and rotarod test. Acutely and subacutely (3 and 7 days after CCI, respectively), CCI mice showed graded injury compared to sham mice for all analyzed deflection depths. Results Time-dependent differences in injury volume were noted between 3 and 7 days following 2-mm TBI in adult mice. In the BMT, 2-mm TBI adults showed spatial memory deficits compared to sham adults (P<0.05). However, no difference in spatial learning and memory was found between sham and 2-mm CCI groups among pediatric mice. The open-field test, light/dark test, and tail suspension test did not reveal differences in anxiety-like behaviors in both age groups. Conclusion Our findings revealed a graded injury response in both age groups. The BMT was an efficient cognitive test for assessing spatial/non-spatial learning following CCI in adult mice; however, spatial learning impairments in pediatric mice could not be assessed.
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Affiliation(s)
- Suk-Woo Lee
- Department of Emergency Medicine, Chungbuk National University Hospital, Cheongju, Korea.,Department of Emergency Medicine, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Mun-Sun Jang
- Department of Emergency Medicine, Chungbuk National University College of Medicine, Cheongju, Korea.,Department of Emergency Medical Technology, Chungbuk Health & Science University, Cheongju, Korea
| | - Seong-Hae Jeong
- Department of Neurology, Chungnam National University College of Medicine, Daejeon, Korea
| | - Hoon Kim
- Department of Emergency Medicine, Chungbuk National University Hospital, Cheongju, Korea.,Department of Emergency Medicine, Chungbuk National University College of Medicine, Cheongju, Korea
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7
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O'Neil DA, Nicholas MA, Lajud N, Kline AE, Bondi CO. Preclinical Models of Traumatic Brain Injury: Emerging Role of Glutamate in the Pathophysiology of Depression. Front Pharmacol 2018; 9:579. [PMID: 29910733 PMCID: PMC5992468 DOI: 10.3389/fphar.2018.00579] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 05/15/2018] [Indexed: 12/19/2022] Open
Abstract
More than 10 million people worldwide incur a traumatic brain injury (TBI) each year, with two million cases occurring in the United States. TBI survivors exhibit long-lasting cognitive and affective sequelae that are associated with reduced quality of life and work productivity, as well as mental and emotional disturbances. While TBI-related disabilities often manifest physically and conspicuously, TBI has been linked with a "silent epidemic" of psychological disorders, including major depressive disorder (MDD). The prevalence of MDD post-insult is approximately 50% within the 1st year. Furthermore, given they are often under-reported when mild, TBIs could be a significant overall cause of MDD in the United States. The emergence of MDD post-TBI may be rooted in widespread disturbances in the modulatory role of glutamate, such that glutamatergic signaling becomes excessive and deleterious to neuronal integrity, as reported in both clinical and preclinical studies. Following this acute glutamatergic storm, regulators of glutamatergic function undergo various manipulations, which include, but are not limited to, alterations in glutamatergic subunit composition, release, and reuptake. This review will characterize the glutamatergic functional and signaling changes that emerge and persist following experimental TBI, utilizing evidence from clinical, molecular, and rodent behavioral investigations. Special care will be taken to speculate on how these manipulations may correlate with the development of MDD following injury in the clinic, as well as pharmacotherapies to date. Indisputably, TBI is a significant healthcare issue that warrants discovery and subsequent refinement of therapeutic strategies to improve neurobehavioral recovery and mental health.
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Affiliation(s)
- Darik A O'Neil
- Physical Medicine & Rehabilitation, University of Pittsburgh, Pittsburgh, PA, United States.,Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, PA, United States
| | - Melissa A Nicholas
- Physical Medicine & Rehabilitation, University of Pittsburgh, Pittsburgh, PA, United States.,Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, PA, United States
| | - Naima Lajud
- Physical Medicine & Rehabilitation, University of Pittsburgh, Pittsburgh, PA, United States.,Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, PA, United States.,División de Neurociencias, Centro de Investigación Biomédica de Michoacán - Instituto Mexicano del Seguro Social, Morelia, Mexico
| | - Anthony E Kline
- Physical Medicine & Rehabilitation, University of Pittsburgh, Pittsburgh, PA, United States.,Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, PA, United States.,Center for Neuroscience, University of Pittsburgh, Pittsburgh, PA, United States.,Center for the Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, PA, United States.,Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA, United States.,Department of Psychology, University of Pittsburgh, Pittsburgh, PA, United States
| | - Corina O Bondi
- Physical Medicine & Rehabilitation, University of Pittsburgh, Pittsburgh, PA, United States.,Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, PA, United States.,Center for Neuroscience, University of Pittsburgh, Pittsburgh, PA, United States.,Center for the Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, PA, United States.,Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA, United States
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8
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Ren H, Xu W. Polysialylated Neural Cell Adhesion Molecule Supports Regeneration of Neurons in the Nucleus Ambiguus After Unilateral Recurrent Laryngeal Nerve Avulsion in Adult Rats. J Voice 2017; 33:52-57. [PMID: 29169663 DOI: 10.1016/j.jvoice.2017.10.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Revised: 10/07/2017] [Accepted: 10/13/2017] [Indexed: 01/10/2023]
Abstract
OBJECTIVES A correlation appears to exist between the expression of the polysialic acid neural cell adhesion molecule (PSA-NCAM) and repair in central nervous system (CNS) diseases. However, the expression of PSA-NCAM in the CNS after peripheral nerve injury remains unclear. This study aimed to evaluate the expression of PSA-NCAM in the ipsilateral nucleus ambiguus (NA) after unilateral recurrent laryngeal nerve (RLN) avulsion. MATERIALS AND METHODS The left RLN of adult Sprague Dawley rats were avulsed. The expression of PSA-NCAM, PSA-NCAM/NeuN, and PSA-NCAM/Tuj1 in the brain stem was investigated using immunohistochemistry. The results were subjected to one-way analysis of variance followed by the Tukey post hoc test for statistical analyses. RESULTS PSA-NCAM-positive and PSA-NCAM/NeuN and PSA-NCAM/Tuj1 double-labeled positive cells were observed 7 days post injury in the ipsilateral NA. PSA-NCAM/NeuN and PSA-NCAM/Tuj1 double-labeled cells were observed at 21 and 7 days post injury, respectively. PSA-NCAM/NeuN double-labeled cells were also found in the contralateral NA. CONCLUSIONS After unilateral avulsion of the RLN, the expression of PSA-NCAM in the ipsilateral NA was correlated with the proliferation and the differentiation of neural cells. PSA-NCAM expression may be used as a predictor of the initiation of repair in neural cells.
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Affiliation(s)
- Hui Ren
- Department of Otorhinolaryngology-Head Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China; Department of Otorhinolaryngology-Head Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Wen Xu
- Department of Otorhinolaryngology-Head Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
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9
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Jang H, Huang S, Hammer DX, Wang L, Rafi H, Ye M, Welle CG, Fisher JAN. Alterations in neurovascular coupling following acute traumatic brain injury. NEUROPHOTONICS 2017; 4:045007. [PMID: 29296629 PMCID: PMC5741992 DOI: 10.1117/1.nph.4.4.045007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 11/28/2017] [Indexed: 06/07/2023]
Abstract
Following acute traumatic brain injury (TBI), timely transport to a hospital can significantly improve the prognosis for recovery. There is, however, a dearth of quantitative biomarkers for brain injury that can be rapidly acquired and interpreted in active, field environments in which TBIs are frequently incurred. We explored potential functional indicators for TBI that can be noninvasively obtained through portable detection modalities, namely optical and electrophysiological approaches. By combining diffuse correlation spectroscopy with colocalized electrophysiological measurements in a mouse model of TBI, we observed concomitant alterations in sensory-evoked cerebral blood flow (CBF) and electrical potentials following controlled cortical impact. Injury acutely reduced the peak amplitude of both electrophysiological and CBF responses, which mostly recovered to baseline values within 30 min, and intertrial variability for these parameters was also acutely altered. Notably, the postinjury dynamics of the CBF overshoot and undershoot amplitudes differed significantly; whereas the amplitude of the initial peak of stimulus-evoked CBF recovered relatively rapidly, the ensuing undershoot did not appear to recover within 30 min of injury. Additionally, acute injury induced apparent low-frequency oscillatory behavior in CBF ([Formula: see text]). Histological assessment indicated that these physiological alterations were not associated with any major, persisting anatomical changes. Several time-domain features of the blood flow and electrophysiological responses showed strong correlations in recovery kinetics. Overall, our results reveal an array of stereotyped, injury-induced alterations in electrophysiological and hemodynamic responses that can be rapidly obtained using a combination of portable detection techniques.
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Affiliation(s)
- Hyounguk Jang
- New York Medical College, Department of Physiology, Valhalla, New York, United States
- U.S. Food and Drug Administration, Division of Biomedical Physics, Silver Spring, Maryland, United States
| | - Stanley Huang
- U.S. Food and Drug Administration, Division of Biomedical Physics, Silver Spring, Maryland, United States
| | - Daniel X. Hammer
- U.S. Food and Drug Administration, Division of Biomedical Physics, Silver Spring, Maryland, United States
| | - Lin Wang
- New York Medical College, Department of Physiology, Valhalla, New York, United States
| | - Harmain Rafi
- New York Medical College, Department of Physiology, Valhalla, New York, United States
| | - Meijun Ye
- U.S. Food and Drug Administration, Division of Biomedical Physics, Silver Spring, Maryland, United States
| | - Cristin G. Welle
- U.S. Food and Drug Administration, Division of Biomedical Physics, Silver Spring, Maryland, United States
- University of Colorado Denver, Departments of Neurosurgery and Bioengineering, Aurora, Colorado, United States
| | - Jonathan A. N. Fisher
- New York Medical College, Department of Physiology, Valhalla, New York, United States
- U.S. Food and Drug Administration, Division of Biomedical Physics, Silver Spring, Maryland, United States
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10
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Kim Y, Fu AH, Tucker LB, Liu J, McCabe JT. Characterization of controlled cortical impact devices by high-speed image analysis. J Neurosci Res 2017; 96:501-511. [DOI: 10.1002/jnr.24099] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 04/27/2017] [Accepted: 05/16/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Yeonho Kim
- Department of Anatomy, Physiology & Genetics, F.E. Hébert School of Medicine; Uniformed Services University of the Health Sciences; Bethesda MD 20814 USA
- Pre-Clinical Studies Core, Center for Neuroscience and Regenerative Medicine, F.E. Hébert School of Medicine; Uniformed Services University of the Health Sciences; Bethesda MD 20814 USA
| | - Amanda H. Fu
- Department of Anatomy, Physiology & Genetics, F.E. Hébert School of Medicine; Uniformed Services University of the Health Sciences; Bethesda MD 20814 USA
- Pre-Clinical Studies Core, Center for Neuroscience and Regenerative Medicine, F.E. Hébert School of Medicine; Uniformed Services University of the Health Sciences; Bethesda MD 20814 USA
| | - Laura B. Tucker
- Department of Anatomy, Physiology & Genetics, F.E. Hébert School of Medicine; Uniformed Services University of the Health Sciences; Bethesda MD 20814 USA
- Pre-Clinical Studies Core, Center for Neuroscience and Regenerative Medicine, F.E. Hébert School of Medicine; Uniformed Services University of the Health Sciences; Bethesda MD 20814 USA
| | - Jiong Liu
- Department of Anatomy, Physiology & Genetics, F.E. Hébert School of Medicine; Uniformed Services University of the Health Sciences; Bethesda MD 20814 USA
| | - Joseph T. McCabe
- Department of Anatomy, Physiology & Genetics, F.E. Hébert School of Medicine; Uniformed Services University of the Health Sciences; Bethesda MD 20814 USA
- Pre-Clinical Studies Core, Center for Neuroscience and Regenerative Medicine, F.E. Hébert School of Medicine; Uniformed Services University of the Health Sciences; Bethesda MD 20814 USA
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11
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Bogoslovsky T, Bernstock JD, Bull G, Gouty S, Cox BM, Hallenbeck JM, Maric D. Development of a systems-based in situ multiplex biomarker screening approach for the assessment of immunopathology and neural tissue plasticity in male rats after traumatic brain injury. J Neurosci Res 2017; 96:487-500. [PMID: 28463430 DOI: 10.1002/jnr.24054] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Revised: 02/08/2017] [Accepted: 03/02/2017] [Indexed: 12/12/2022]
Abstract
Traumatic brain injuries (TBIs) pose a massive burden of disease and continue to be a leading cause of morbidity and mortality throughout the world. A major obstacle in developing effective treatments is the lack of comprehensive understanding of the underlying mechanisms that mediate tissue damage and recovery after TBI. As such, our work aims to highlight the development of a novel experimental platform capable of fully characterizing the underlying pathobiology that unfolds after TBI. This platform encompasses an empirically optimized multiplex immunohistochemistry staining and imaging system customized to screen for a myriad of biomarkers required to comprehensively evaluate the extent of neuroinflammation, neural tissue damage, and repair in response to TBI. Herein, we demonstrate that our multiplex biomarker screening platform is capable of evaluating changes in both the topographical location and functional states of resident and infiltrating cell types that play a role in neuropathology after controlled cortical impact injury to the brain in male Sprague-Dawley rats. Our results demonstrate that our multiplex biomarker screening platform lays the groundwork for the comprehensive characterization of changes that occur within the brain after TBI. Such work may ultimately lead to the understanding of the governing pathobiology of TBI, thereby fostering the development of novel therapeutic interventions tailored to produce optimal tissue protection, repair, and/or regeneration with minimal side effects, and may ultimately find utility in a wide variety of other neurological injuries, diseases, and disorders that share components of TBI pathobiology.
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Affiliation(s)
- Tanya Bogoslovsky
- Center for Neuroscience and Regenerative Medicine, Uniformed Services University of the Health Sciences (CNRM/USUHS), Rockville, Maryland
| | - Joshua D Bernstock
- Stroke Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NINDS/NIH), Bethesda, Maryland.,Department of Clinical Neurosciences, Division of Stem Cell Neurobiology, Wellcome Trust-Medical Research Council Stem Cell Institute, University of Cambridge, Cambridge, United Kingdom
| | - Greg Bull
- Center for Neuroscience and Regenerative Medicine, Uniformed Services University of the Health Sciences (CNRM/USUHS), Rockville, Maryland.,Department of Pharmacology, Uniformed Services University of the Health Sciences (USUHS), Bethesda, Maryland
| | - Shawn Gouty
- Center for Neuroscience and Regenerative Medicine, Uniformed Services University of the Health Sciences (CNRM/USUHS), Rockville, Maryland.,Department of Pharmacology, Uniformed Services University of the Health Sciences (USUHS), Bethesda, Maryland
| | - Brian M Cox
- Center for Neuroscience and Regenerative Medicine, Uniformed Services University of the Health Sciences (CNRM/USUHS), Rockville, Maryland.,Department of Pharmacology, Uniformed Services University of the Health Sciences (USUHS), Bethesda, Maryland
| | - John M Hallenbeck
- Stroke Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NINDS/NIH), Bethesda, Maryland
| | - Dragan Maric
- Flow and Imaging Cytometry Core Facility, National Institute of Neurological Disorders and Stroke, National Institutes of Health (NINDS/NIH), Bethesda, Maryland
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12
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Osier ND, Pham L, Pugh BJ, Puccio A, Ren D, Conley YP, Alexander S, Dixon CE. Brain injury results in lower levels of melatonin receptors subtypes MT1 and MT2. Neurosci Lett 2017; 650:18-24. [PMID: 28377323 DOI: 10.1016/j.neulet.2017.03.053] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 03/29/2017] [Accepted: 03/31/2017] [Indexed: 02/09/2023]
Abstract
BACKGROUND Traumatic brain injury (TBI) is a devastating and costly acquired condition that affects individuals of all ages, races, and geographies via a number of mechanisms. The effects of TBI on melatonin receptors remain unknown. PURPOSE The purpose of this study is to explore whether endogenous changes in two melatonin receptor subtypes (MT1 and MT2) occur after experimental TBI. SAMPLE A total of 25 adult male Sprague Dawley rats were used with 6 or 7 rats per group. METHODS Rats were randomly assigned to receive either TBI modeled using controlled cortical impact or sham surgery and to be sacrificed at either 6- or 24-h post-operatively. Brains were harvested, dissected, and flash frozen until whole cell lysates were prepared, and the supernatant fluid aliquoted and used for western blotting. Primary antibodies were used to probe for melatonin receptors (MT1 and MT2), and beta actin, used for a loading control. ImageJ and Image Lab software were used to quantify the data which was analyzed using t-tests to compare means. RESULTS Melatonin receptor levels were reduced in a brain region- and time point- dependent manner. Both MT1 and MT2 were reduced in the frontal cortex at 24h and in the hippocampus at both 6h and 24h. DISCUSSION MT1 and MT2 are less abundant after injury, which may alter response to MEL therapy. Studies characterizing MT1 and MT2 after TBI are needed, including exploration of the time course and regional patterns, replication in diverse samples, and use of additional variables, especially sleep-related outcomes. CONCLUSION TBI in rats resulted in lower levels of MT1 and MT2; replication of these findings is necessary as is evaluation of the consequences of lower receptor levels.
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Affiliation(s)
- Nicole D Osier
- University of Pittsburgh School of Nursing, Victoria Building, 3500 Victoria Street, Pittsburgh, PA, 15213, USA; Safar Center for Resuscitation Research, Children's Hospital of Pittsburgh of UPMC, John G. Rangos Research, Center - 6th floor, 4401 Penn Avenue, Pittsburgh, PA, 15224, USA.
| | - Lan Pham
- University of Pittsburgh School of Nursing, Victoria Building, 3500 Victoria Street, Pittsburgh, PA, 15213, USA.
| | - Bunny J Pugh
- Safar Center for Resuscitation Research, Children's Hospital of Pittsburgh of UPMC, John G. Rangos Research, Center - 6th floor, 4401 Penn Avenue, Pittsburgh, PA, 15224, USA.
| | - Ava Puccio
- University of Pittsburgh School of Nursing, Victoria Building, 3500 Victoria Street, Pittsburgh, PA, 15213, USA; University of Pittsburgh Department of Neurological Surgery, Brain Trauma Research Center, UPMC Presbyterian, Suite B-400, 200 Lothrop Street, Pittsburgh, PA, 15213, USA.
| | - Dianxu Ren
- University of Pittsburgh School of Nursing, Victoria Building, 3500 Victoria Street, Pittsburgh, PA, 15213, USA.
| | - Yvette P Conley
- University of Pittsburgh School of Nursing, Victoria Building, 3500 Victoria Street, Pittsburgh, PA, 15213, USA; University of Pittsburgh Department of Human Genetics, Crabtree Hall, 130 De Soto Street, Pittsburgh, PA, 15261, USA.
| | - Sheila Alexander
- University of Pittsburgh School of Nursing, Victoria Building, 3500 Victoria Street, Pittsburgh, PA, 15213, USA; University of Pittsburgh School of Medicine, M240 Scaife Hall, 3550 Terrace Street, Pittsburgh, PA, 15261, USA.
| | - C Edward Dixon
- Safar Center for Resuscitation Research, Children's Hospital of Pittsburgh of UPMC, John G. Rangos Research, Center - 6th floor, 4401 Penn Avenue, Pittsburgh, PA, 15224, USA; University of Pittsburgh Department of Neurological Surgery, Brain Trauma Research Center, UPMC Presbyterian, Suite B-400, 200 Lothrop Street, Pittsburgh, PA, 15213, USA; VA Pittsburgh Healthcare System, 4100 Allequippa St, Pittsburgh, PA, 15261, USA.
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Bondi CO, Semple BD, Noble-Haeusslein LJ, Osier ND, Carlson SW, Dixon CE, Giza CC, Kline AE. Found in translation: Understanding the biology and behavior of experimental traumatic brain injury. Neurosci Biobehav Rev 2015; 58:123-46. [PMID: 25496906 PMCID: PMC4465064 DOI: 10.1016/j.neubiorev.2014.12.004] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2014] [Revised: 10/26/2014] [Accepted: 12/02/2014] [Indexed: 12/14/2022]
Abstract
The aim of this review is to discuss in greater detail the topics covered in the recent symposium entitled "Traumatic brain injury: laboratory and clinical perspectives," presented at the 2014 International Behavioral Neuroscience Society annual meeting. Herein, we review contemporary laboratory models of traumatic brain injury (TBI) including common assays for sensorimotor and cognitive behavior. New modalities to evaluate social behavior after injury to the developing brain, as well as the attentional set-shifting test (AST) as a measure of executive function in TBI, will be highlighted. Environmental enrichment (EE) will be discussed as a preclinical model of neurorehabilitation, and finally, an evidence-based approach to sports-related concussion will be considered. The review consists predominantly of published data, but some discussion of ongoing or future directions is provided.
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Affiliation(s)
- Corina O Bondi
- Physical Medicine & Rehabilitation, University of Pittsburgh, Pittsburgh, PA, United States; Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, PA, United States; Center for Neuroscience, University of Pittsburgh, Pittsburgh, PA, United States; Center for the Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, PA, United States
| | - Bridgette D Semple
- Neurological Surgery and the Graduate Program in Physical Medicine & Rehabilitation Science, University of California, San Francisco, San Francisco, CA, United States; Department of Medicine (Royal Melbourne Hospital), University of Melbourne, Parkville, VIC, Australia
| | - Linda J Noble-Haeusslein
- Neurological Surgery and the Graduate Program in Physical Medicine & Rehabilitation Science, University of California, San Francisco, San Francisco, CA, United States
| | - Nicole D Osier
- Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, PA, United States; School of Nursing, University of Pittsburgh, Pittsburgh, PA, United States
| | - Shaun W Carlson
- Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, PA, United States; Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, United States
| | - C Edward Dixon
- Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, PA, United States; Center for Neuroscience, University of Pittsburgh, Pittsburgh, PA, United States; Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, United States; Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA, United States
| | - Christopher C Giza
- Pediatric Neurology and Neurosurgery, University of California, Los Angeles, Los Angeles, CA, United States; UCLA Brain Injury Research Center, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States
| | - Anthony E Kline
- Physical Medicine & Rehabilitation, University of Pittsburgh, Pittsburgh, PA, United States; Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, PA, United States; Center for Neuroscience, University of Pittsburgh, Pittsburgh, PA, United States; Center for the Neural Basis of Cognition, University of Pittsburgh, Pittsburgh, PA, United States; Psychology, University of Pittsburgh, Pittsburgh, PA, United States; Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA, United States.
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14
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Watzlawik JO, Painter MM, Wootla B, Rodriguez M. A human anti-polysialic acid antibody as a potential treatment to improve function in multiple sclerosis patients. JOURNAL OF NATURE AND SCIENCE 2015; 1:e141. [PMID: 27446988 PMCID: PMC4951103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We previously identified a human monoclonal antibody, termed HIgM12 that stimulates spontaneous locomotor activity in a chronically demyelinating mouse model of multiple sclerosis. When tested as a molecular substrate, HIgM12 stimulated neurite outgrowth in vitro. We recently reported that polysialic acid (PSA) attached to the neural cell adhesion molecule (NCAM) is one of the cellular antigens for HIgM12. Fluorescent double-labeling of astrocytes using HIgM12 and commercially available anti-PSA antibody showed dramatic co-localization. Neural tissue homogenates and primary CNS cultures from mice lacking the three major NCAM splice variants NCAM180, NCAM140 and NCAM120 (NCAM KO) were no longer able to bind HIgM12. Furthermore, enzymatic digestion of PSA on wild type (WT) glia abolished HIgM12-binding. Moreover, neurons and glia from NCAM KO animals did not attach to HIgM12-coated nitrocellulose in neurite outgrowth assays. We conclude that HIgM12 targets PSA attached to NCAM, and that the PSA moiety mediates neuronal and glial adhesion and subsequent neurite outgrowth in our in vitro assay. Therefore, this anti-PSA antibody may serve as a future therapeutic to stimulate functional improvement in multiple sclerosis patients and other neurodegenerative diseases.
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Affiliation(s)
- Jens O. Watzlawik
- Department of Neurology, Clinic College of Medicine, Rochester, Minnesota, USA
| | - Meghan M. Painter
- Mayo Graduate School, Clinic College of Medicine, Rochester, Minnesota, USA
| | - Bharath Wootla
- Department of Neurology, Clinic College of Medicine, Rochester, Minnesota, USA
| | - Moses Rodriguez
- Department of Neurology, Clinic College of Medicine, Rochester, Minnesota, USA
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Dixon KJ, Theus MH, Nelersa CM, Mier J, Travieso LG, Yu TS, Kernie SG, Liebl DJ. Endogenous neural stem/progenitor cells stabilize the cortical microenvironment after traumatic brain injury. J Neurotrauma 2015; 32:753-64. [PMID: 25290253 DOI: 10.1089/neu.2014.3390] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Although a myriad of pathological responses contribute to traumatic brain injury (TBI), cerebral dysfunction has been closely linked to cell death mechanisms. A number of therapeutic strategies have been studied in an attempt to minimize or ameliorate tissue damage; however, few studies have evaluated the inherent protective capacity of the brain. Endogenous neural stem/progenitor cells (NSPCs) reside in distinct brain regions and have been shown to respond to tissue damage by migrating to regions of injury. Until now, it remained unknown whether these cells have the capacity to promote endogenous repair. We ablated NSPCs in the subventricular zone to examine their contribution to the injury microenvironment after controlled cortical impact (CCI) injury. Studies were performed in transgenic mice expressing the herpes simplex virus thymidine kinase gene under the control of the nestin(δ) promoter exposed to CCI injury. Two weeks after CCI injury, mice deficient in NSPCs had reduced neuronal survival in the perilesional cortex and fewer Iba-1-positive and glial fibrillary acidic protein-positive glial cells but increased glial hypertrophy at the injury site. These findings suggest that the presence of NSPCs play a supportive role in the cortex to promote neuronal survival and glial cell expansion after TBI injury, which corresponds with improvements in motor function. We conclude that enhancing this endogenous response may have acute protective roles after TBI.
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Affiliation(s)
- Kirsty J Dixon
- 1The Miami Project to Cure Paralysis and Department of Neurological Surgery, University of Miami, Miami, Florida
| | - Michelle H Theus
- 2The Department of Biomedical Sciences and Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Blacksburg, Virginia
| | - Claudiu M Nelersa
- 1The Miami Project to Cure Paralysis and Department of Neurological Surgery, University of Miami, Miami, Florida
| | - Jose Mier
- 1The Miami Project to Cure Paralysis and Department of Neurological Surgery, University of Miami, Miami, Florida
| | - Lissette G Travieso
- 1The Miami Project to Cure Paralysis and Department of Neurological Surgery, University of Miami, Miami, Florida
| | - Tzong-Shiue Yu
- 3Department of Pathology and Cell Biology, Columbia University, New York, New York
| | - Steven G Kernie
- 3Department of Pathology and Cell Biology, Columbia University, New York, New York
| | - Daniel J Liebl
- 1The Miami Project to Cure Paralysis and Department of Neurological Surgery, University of Miami, Miami, Florida
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16
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Roll L, Faissner A. Influence of the extracellular matrix on endogenous and transplanted stem cells after brain damage. Front Cell Neurosci 2014; 8:219. [PMID: 25191223 PMCID: PMC4137450 DOI: 10.3389/fncel.2014.00219] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 07/18/2014] [Indexed: 01/07/2023] Open
Abstract
The limited regeneration capacity of the adult central nervous system (CNS) requires strategies to improve recovery of patients. In this context, the interaction of endogenous as well as transplanted stem cells with their environment is crucial. An understanding of the molecular mechanisms could help to improve regeneration by targeted manipulation. In the course of reactive gliosis, astrocytes upregulate Glial fibrillary acidic protein (GFAP) and start, in many cases, to proliferate. Beside GFAP, subpopulations of these astroglial cells coexpress neural progenitor markers like Nestin. Although cells express these markers, the proportion of cells that eventually give rise to neurons is limited in many cases in vivo compared to the situation in vitro. In the first section, we present the characteristics of endogenous progenitor-like cells and discuss the differences in their neurogenic potential in vitro and in vivo. As the environment plays an important role for survival, proliferation, migration, and other processes, the second section of the review describes changes in the extracellular matrix (ECM), a complex network that contains numerous signaling molecules. It appears that signals in the damaged CNS lead to an activation and de-differentiation of astrocytes, but do not effectively promote neuronal differentiation of these cells. Factors that influence stem cells during development are upregulated in the damaged brain as part of an environment resembling a stem cell niche. We give a general description of the ECM composition, with focus on stem cell-associated factors like the glycoprotein Tenascin-C (TN-C). Stem cell transplantation is considered as potential treatment strategy. Interaction of transplanted stem cells with the host environment is critical for the outcome of stem cell-based therapies. Possible mechanisms involving the ECM by which transplanted stem cells might improve recovery are discussed in the last section.
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Affiliation(s)
- Lars Roll
- Department of Cell Morphology and Molecular Neurobiology, Ruhr-University Bochum Bochum, Germany ; International Graduate School of Neuroscience, Ruhr-University Bochum Bochum, Germany
| | - Andreas Faissner
- Department of Cell Morphology and Molecular Neurobiology, Ruhr-University Bochum Bochum, Germany ; International Graduate School of Neuroscience, Ruhr-University Bochum Bochum, Germany
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17
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Park K, Biederer T. Neuronal adhesion and synapse organization in recovery after brain injury. FUTURE NEUROLOGY 2013; 8:555-567. [PMID: 24489481 DOI: 10.2217/fnl.13.35] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Few specific therapeutic targets exist to manage brain injury, despite the prevalence of stroke or traumatic brain injury. With traumatic brain injury, characteristic neuronal changes include axonal swelling and degeneration, and the loss of synapses, the sites of communication between neurons. This is followed by axonal sprouting and alterations in synaptic markers in recovery. The resulting changes in neuronal connectivity are likely to contribute to the effects of traumatic brain injury on cognitive functions and the underlying mechanisms may represent points of therapeutic intervention. In agreement, animal studies implicate adhesion and signaling molecules that organize synapses as molecular players in neuronal recovery. In this article, the authors focus on the role of cell surface interactions in the recovery after brain injury in humans and animals. The authors review cellular and synaptic alterations that occur with injury and how changes in cell adhesion, protein expression and modification may be involved in recovery. The changes in neuronal surface interactions as potential targets and their possible value for the development of therapeutics are also discussed.
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Affiliation(s)
- Kellie Park
- Department of Anesthesiology, Yale University School of Medicine, New Haven, CT, USA
| | - Thomas Biederer
- Department of Molecular Biophysics & Biochemistry, Yale University School of Medicine, New Haven, CT, USA ; Program in Cellular Neuroscience, Neurodegeneration & Repair, Yale University School of Medicine, New Haven, CT, USA
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18
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Budinich CS, Tucker LB, Lowe D, Rosenberger JG, McCabe JT. Short and long-term motor and behavioral effects of diazoxide and dimethyl sulfoxide administration in the mouse after traumatic brain injury. Pharmacol Biochem Behav 2013; 108:66-73. [DOI: 10.1016/j.pbb.2013.04.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Revised: 04/02/2013] [Accepted: 04/06/2013] [Indexed: 01/11/2023]
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19
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Zhang J, Twelvetrees AE, Lazarus JE, Blasier KR, Yao X, Inamdar NA, Holzbaur ELF, Pfister KK, Xiang X. Establishing a novel knock-in mouse line for studying neuronal cytoplasmic dynein under normal and pathologic conditions. Cytoskeleton (Hoboken) 2013; 70:215-27. [PMID: 23475693 PMCID: PMC3670090 DOI: 10.1002/cm.21102] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2013] [Revised: 02/23/2013] [Accepted: 02/26/2013] [Indexed: 12/19/2022]
Abstract
Cytoplasmic dynein plays important roles in mitosis and the intracellular transport of organelles, proteins, and mRNAs. Dynein function is particularly critical for survival of neurons, as mutations in dynein are linked to neurodegenerative diseases. Dynein function is also implicated in neuronal regeneration, driving the active transport of signaling molecules following injury of peripheral neurons. To enhance our understanding of dynein function and regulation in neurons, we established a novel knock-in mouse line in which the neuron-specific cytoplasmic dynein 1 intermediate chain 1 (IC-1) is tagged with both GFP and a 3xFLAG tag at its C-terminus. The fusion gene is under the control of IC-1's endogenous promoter and is integrated at the endogenous locus of the IC-1-encoding gene Dync1i1. The IC-1-GFP-3xFLAG fusion protein is incorporated into the endogenous dynein complex, and movements of GFP-labeled dynein expressed at endogenous levels can be observed in cultured neurons for the first time. The knock-in mouse line also allows isolation and analysis of dynein-bound proteins specifically from neurons. Using this mouse line we have found proteins, including 14-3-3 zeta, which physically interact with dynein upon injury of the brain cortex. Thus, we have created a useful tool for studying dynein function in the central nervous system under normal and pathologic conditions.
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Affiliation(s)
- Jun Zhang
- Department of Biochemistry and Molecular Biology, the Uniformed Services University of the Health Sciences, Bethesda, MD 20814
- Center for Neuroscience and Regenerative Medicine, the Uniformed Services University of the Health Sciences, Bethesda, MD 20814
| | - Alison E. Twelvetrees
- Pennsylvania Muscle Institute and Department of Physiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Jacob E. Lazarus
- Pennsylvania Muscle Institute and Department of Physiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Kiev R. Blasier
- Department of Cell Biology, School of Medicine, University of Virginia, Charlottesville, VA 22908, USA
| | - Xuanli Yao
- Department of Biochemistry and Molecular Biology, the Uniformed Services University of the Health Sciences, Bethesda, MD 20814
- Center for Neuroscience and Regenerative Medicine, the Uniformed Services University of the Health Sciences, Bethesda, MD 20814
| | - Nirja A. Inamdar
- Department of Cell Biology, School of Medicine, University of Virginia, Charlottesville, VA 22908, USA
| | - Erika L. F. Holzbaur
- Pennsylvania Muscle Institute and Department of Physiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - K. Kevin Pfister
- Department of Cell Biology, School of Medicine, University of Virginia, Charlottesville, VA 22908, USA
| | - Xin Xiang
- Department of Biochemistry and Molecular Biology, the Uniformed Services University of the Health Sciences, Bethesda, MD 20814
- Center for Neuroscience and Regenerative Medicine, the Uniformed Services University of the Health Sciences, Bethesda, MD 20814
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