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Latchoumane CFV, Chopra P, Sun L, Ahmed A, Palmieri F, Wu HF, Guerreso R, Thorne K, Zeltner N, Boons GJ, Karumbaiah L. Synthetic Heparan Sulfate Hydrogels Regulate Neurotrophic Factor Signaling and Neuronal Network Activity. ACS Appl Mater Interfaces 2022; 14:28476-28488. [PMID: 35708492 PMCID: PMC10108098 DOI: 10.1021/acsami.2c01575] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Three-dimensional (3D) synthetic heparan sulfate (HS) constructs possess promising attributes for neural tissue engineering applications. However, their sulfation-dependent ability to facilitate molecular recognition and cell signaling has not yet been investigated. We hypothesized that fully sulfated synthetic HS constructs (bearing compound 1) that are functionalized with neural adhesion peptides will enhance fibroblast growth factor-2 (FGF2) binding and complexation with FGF receptor-1 (FGFR1) to promote the proliferation and neuronal differentiation of human neural stem cells (hNSCs) when compared to constructs with unsulfated controls (bearing compound 2). We tested this hypothesis in vitro using 2D and 3D substrates consisting of different combinations of HS tetrasaccharides (compounds 3 and 4) and an engineered integrin-binding chimeric peptide (CP), which were assembled using strain-promoted alkyne-azide cycloaddition (SPAAC) chemistry. Results indicated that the adhesion of hNSCs increased significantly when cultured on 2D glass substrates functionalized with chimeric peptide. hNSCs encapsulated in 1-CP hydrogels and cultured in media containing the mitogen FGF2 exhibited significantly higher neuronal differentiation when compared to hNSCs in 2-CP hydrogels. These observations were corroborated by Western blot analysis, which indicated the enhanced binding and retention of both FGF2 and FGFR1 by 1 as well as downstream phosphorylation of extracellular signal-regulated kinases (ERK1/2) and enhanced proliferation of hNSCs. Lastly, calcium activity imaging revealed that both 1 and 2 hydrogels supported the neuronal growth and activity of pre-differentiated human prefrontal cortex neurons. Collectively, these results demonstrate that synthetic HS hydrogels can be tailored to regulate growth factor signaling and neuronal fate and activity.
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Affiliation(s)
- Charles-Francois V Latchoumane
- Regenerative Bioscience Center, University of Georgia, Athens, Georgia 30602, United States
- Edgar L. Rhodes Center for ADS, College of Agriculture and Environmental Sciences, University of Georgia, Athens, Georgia 30602, United States
| | - Pradeep Chopra
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602, United States
| | - Lifeng Sun
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, and Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht 3583, The Netherlands
| | - Aws Ahmed
- Regenerative Bioscience Center, University of Georgia, Athens, Georgia 30602, United States
| | - Francesco Palmieri
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, and Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht 3583, The Netherlands
| | - Hsueh-Fu Wu
- Department of Biochemistry and Molecular Biology, Franklin College of Arts and Sciences, University of Georgia, Athens, Georgia 30602, United States
- Department of Cellular Biology, Franklin College of Arts and Sciences, University of Georgia, Athens, Georgia 30602, United States
| | - Rebecca Guerreso
- Regenerative Bioscience Center, University of Georgia, Athens, Georgia 30602, United States
- Edgar L. Rhodes Center for ADS, College of Agriculture and Environmental Sciences, University of Georgia, Athens, Georgia 30602, United States
| | - Kristen Thorne
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602, United States
| | - Nadja Zeltner
- Department of Biochemistry and Molecular Biology, Franklin College of Arts and Sciences, University of Georgia, Athens, Georgia 30602, United States
- Department of Cellular Biology, Franklin College of Arts and Sciences, University of Georgia, Athens, Georgia 30602, United States
- Center for Molecular Medicine, University of Georgia, Athens, Georgia 30602, United States
- Division of Neuroscience, Biomedical and Translational Sciences Institute, University of Georgia, Athens, Georgia 30602, United States
| | - Geert-Jan Boons
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia 30602, United States
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, and Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht 3583, The Netherlands
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Lohitash Karumbaiah
- Regenerative Bioscience Center, University of Georgia, Athens, Georgia 30602, United States
- Edgar L. Rhodes Center for ADS, College of Agriculture and Environmental Sciences, University of Georgia, Athens, Georgia 30602, United States
- Division of Neuroscience, Biomedical and Translational Sciences Institute, University of Georgia, Athens, Georgia 30602, United States
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Latchoumane CFV, Forghani R, Karumbaiah L. Cortical Laminar Recording of Multi-unit Response to Distal Forelimb Electrical Stimulation in Rats. Bio Protoc 2021; 11:e4153. [PMID: 34909440 DOI: 10.21769/bioprotoc.4153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/28/2021] [Accepted: 08/22/2021] [Indexed: 11/02/2022] Open
Abstract
Severe traumatic brain injury (sTBI) survivors experience permanent functional disabilities due to significant volume loss and the brain's poor capacity to regenerate. Chondroitin sulfate glycosaminoglycans (CS-GAGs) are key regulators of growth factor signaling and neural stem cell homeostasis in the brain. In this protocol, we describe how to perform recordings to quantify the neuroprotective and regenerative effect of implanted engineered CS-GAG hydrogel (eCS) on brain tissue. This experiment was performed in rats under three conditions: healthy without injury (Sham), controlled cortical impact (CCI) injury on the rostral forelimb area (RFA), and CCI-RFA with eCS implants. This protocol describes the procedure used to perform the craniotomy, the positioning of the cortical recording electrode, the positioning of the stimulation electrode (contralateral paw), and the recording procedure. In addition, a description of the exact electrical setup is provided. This protocol details the recordings in the brain of injured animals while preserving most of the uninjured tissue intact, with additional considerations for intralesional and laminar recordings of multi-unit response. Graphic abstract: Sensorimotor response to paw stimulation using cortical laminar recordings.
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Affiliation(s)
| | - Rameen Forghani
- Animal and Dairy Science, University of Georgia, Athens, GA, USA
| | - Lohitash Karumbaiah
- Animal and Dairy Science, University of Georgia, Athens, GA, USA.,Regenerative Bioscience Center, University of Georgia, Athens, GA, USA
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Latchoumane CFV, Betancur MI, Simchick GA, Sun MK, Forghani R, Lenear CE, Ahmed A, Mohankumar R, Balaji N, Mason HD, Archer-Hartmann SA, Azadi P, Holmes PV, Zhao Q, Bellamkonda RV, Karumbaiah L. Engineered glycomaterial implants orchestrate large-scale functional repair of brain tissue chronically after severe traumatic brain injury. Sci Adv 2021; 7:7/10/eabe0207. [PMID: 33674306 PMCID: PMC7935369 DOI: 10.1126/sciadv.abe0207] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 01/21/2021] [Indexed: 05/14/2023]
Abstract
Severe traumatic brain injury (sTBI) survivors experience permanent functional disabilities due to significant volume loss and the brain's poor capacity to regenerate. Chondroitin sulfate glycosaminoglycans (CS-GAGs) are key regulators of growth factor signaling and neural stem cell homeostasis in the brain. However, the efficacy of engineered CS (eCS) matrices in mediating structural and functional recovery chronically after sTBI has not been investigated. We report that neurotrophic factor functionalized acellular eCS matrices implanted into the rat M1 region acutely after sTBI significantly enhanced cellular repair and gross motor function recovery when compared to controls 20 weeks after sTBI. Animals subjected to M2 region injuries followed by eCS matrix implantations demonstrated the significant recovery of "reach-to-grasp" function. This was attributed to enhanced volumetric vascularization, activity-regulated cytoskeleton (Arc) protein expression, and perilesional sensorimotor connectivity. These findings indicate that eCS matrices implanted acutely after sTBI can support complex cellular, vascular, and neuronal circuit repair chronically after sTBI.
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Affiliation(s)
- Charles-Francois V Latchoumane
- Regenerative Bioscience Center, University of Georgia, Athens, GA 30602, USA
- Edgar L. Rhodes Center for ADS, College of Agriculture and Environmental Sciences, University of Georgia, Athens, GA 30602, USA
| | - Martha I Betancur
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, 101 Science Drive, Durham, NC 27705, USA
| | - Gregory A Simchick
- Department of Physics and Astronomy, University of Georgia, Athens, GA 30602, USA
- Bio-Imaging Research Center, University of Georgia, Athens, GA 30602, USA
| | - Min Kyoung Sun
- Regenerative Bioscience Center, University of Georgia, Athens, GA 30602, USA
- Division of Neuroscience, Biomedical & Health Sciences Institute, University of Georgia, Athens, GA 30602, USA
| | - Rameen Forghani
- Regenerative Bioscience Center, University of Georgia, Athens, GA 30602, USA
| | - Christopher E Lenear
- Regenerative Bioscience Center, University of Georgia, Athens, GA 30602, USA
- Edgar L. Rhodes Center for ADS, College of Agriculture and Environmental Sciences, University of Georgia, Athens, GA 30602, USA
| | - Aws Ahmed
- Regenerative Bioscience Center, University of Georgia, Athens, GA 30602, USA
- Edgar L. Rhodes Center for ADS, College of Agriculture and Environmental Sciences, University of Georgia, Athens, GA 30602, USA
| | - Ramya Mohankumar
- Regenerative Bioscience Center, University of Georgia, Athens, GA 30602, USA
| | - Nivedha Balaji
- Regenerative Bioscience Center, University of Georgia, Athens, GA 30602, USA
| | - Hannah D Mason
- Regenerative Bioscience Center, University of Georgia, Athens, GA 30602, USA
| | | | - Parastoo Azadi
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, USA
| | - Philip V Holmes
- Division of Neuroscience, Biomedical & Health Sciences Institute, University of Georgia, Athens, GA 30602, USA
- Psychology Department, University of Georgia, Athens, GA 30602, USA
| | - Qun Zhao
- Regenerative Bioscience Center, University of Georgia, Athens, GA 30602, USA
- Department of Physics and Astronomy, University of Georgia, Athens, GA 30602, USA
- Bio-Imaging Research Center, University of Georgia, Athens, GA 30602, USA
| | - Ravi V Bellamkonda
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, 101 Science Drive, Durham, NC 27705, USA
| | - Lohitash Karumbaiah
- Regenerative Bioscience Center, University of Georgia, Athens, GA 30602, USA.
- Edgar L. Rhodes Center for ADS, College of Agriculture and Environmental Sciences, University of Georgia, Athens, GA 30602, USA
- Division of Neuroscience, Biomedical & Health Sciences Institute, University of Georgia, Athens, GA 30602, USA
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Latchoumane CFV, Barany DA, Karumbaiah L, Singh T. Neurostimulation and Reach-to-Grasp Function Recovery Following Acquired Brain Injury: Insight From Pre-clinical Rodent Models and Human Applications. Front Neurol 2020; 11:835. [PMID: 32849253 PMCID: PMC7396659 DOI: 10.3389/fneur.2020.00835] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 07/06/2020] [Indexed: 12/26/2022] Open
Abstract
Reach-to-grasp is an evolutionarily conserved motor function that is adversely impacted following stroke and traumatic brain injury (TBI). Non-invasive brain stimulation (NIBS) methods, such as transcranial magnetic stimulation and transcranial direct current stimulation, are promising tools that could enhance functional recovery of reach-to-grasp post-brain injury. Though the rodent literature provides a causal understanding of post-injury recovery mechanisms, it has had a limited impact on NIBS protocols in human research. The high degree of homology in reach-to-grasp circuitry between humans and rodents further implies that the application of NIBS to brain injury could be better informed by findings from pre-clinical rodent models and neurorehabilitation research. Here, we provide an overview of the advantages and limitations of using rodent models to advance our current understanding of human reach-to-grasp function, cortical circuitry, and reorganization. We propose that a cross-species comparison of reach-to-grasp recovery could provide a mechanistic framework for clinically efficacious NIBS treatments that could elicit better functional outcomes for patients.
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Affiliation(s)
- Charles-Francois V. Latchoumane
- Department of Animal and Dairy Science, University of Georgia, Athens, GA, United States
- Regenerative Bioscience Center, University of Georgia, Athens, GA, United States
| | - Deborah A. Barany
- Department of Kinesiology, University of Georgia, Athens, GA, United States
| | - Lohitash Karumbaiah
- Department of Animal and Dairy Science, University of Georgia, Athens, GA, United States
- Regenerative Bioscience Center, University of Georgia, Athens, GA, United States
| | - Tarkeshwar Singh
- Regenerative Bioscience Center, University of Georgia, Athens, GA, United States
- Department of Kinesiology, University of Georgia, Athens, GA, United States
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Lee IE, Latchoumane CFV, Jeong J. Arousal Rules: An Empirical Investigation into the Aesthetic Experience of Cross-Modal Perception with Emotional Visual Music. Front Psychol 2017; 8:440. [PMID: 28421007 PMCID: PMC5379063 DOI: 10.3389/fpsyg.2017.00440] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 03/09/2017] [Indexed: 01/04/2023] Open
Abstract
Emotional visual music is a promising tool for the study of aesthetic perception in human psychology; however, the production of such stimuli and the mechanisms of auditory-visual emotion perception remain poorly understood. In Experiment 1, we suggested a literature-based, directive approach to emotional visual music design, and inspected the emotional meanings thereof using the self-rated psychometric and electroencephalographic (EEG) responses of the viewers. A two-dimensional (2D) approach to the assessment of emotion (the valence-arousal plane) with frontal alpha power asymmetry EEG (as a proposed index of valence) validated our visual music as an emotional stimulus. In Experiment 2, we used our synthetic stimuli to investigate possible underlying mechanisms of affective evaluation mechanisms in relation to audio and visual integration conditions between modalities (namely congruent, complementation, or incongruent combinations). In this experiment, we found that, when arousal information between auditory and visual modalities was contradictory [for example, active (+) on the audio channel but passive (−) on the video channel], the perceived emotion of cross-modal perception (visual music) followed the channel conveying the stronger arousal. Moreover, we found that an enhancement effect (heightened and compacted in subjects' emotional responses) in the aesthetic perception of visual music might occur when the two channels contained contradictory arousal information and positive congruency in valence and texture/control. To the best of our knowledge, this work is the first to propose a literature-based directive production of emotional visual music prototypes and the validations thereof for the study of cross-modally evoked aesthetic experiences in human subjects.
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Affiliation(s)
- Irene Eunyoung Lee
- Communicative Interaction Lab, Graduate School of Culture Technology, Korea Advanced Institute of Science and TechnologyDaejeon, South Korea.,Beat Connectome Lab, Sonic Arts & CultureYongin, South Korea
| | | | - Jaeseung Jeong
- Communicative Interaction Lab, Graduate School of Culture Technology, Korea Advanced Institute of Science and TechnologyDaejeon, South Korea.,Department of Bio and Brain Engineering, Korea Advanced Institute of Science and TechnologyDaejeon, South Korea
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Latchoumane CFV, Kim IH, Sohn H, Jeong J. Dynamical nonstationarity of resting EEGs in patients with attention-deficit/hyperactivity disorder (AD/HD). IEEE Trans Biomed Eng 2012; 60:159-63. [PMID: 22955863 DOI: 10.1109/tbme.2012.2213598] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This study applied dynamical nonstationarity analysis (DNA) to the resting EEGs of patients with attention-deficit/hyperactivity disorder (AD/HD). We aimed to assess and characterize AD/HD using features based on the local and global duration of dynamical microstate. We hypothesized that AD/HD patients would have difficulties in maintaining stable cognitive states (e.g., attention deficit and impulsivity) and that they would thus exhibit EEGs with temporal dynamics distinct from normal controls, i.e., rapidly and frequently changing dynamics. To test this hypothesis, we recorded EEGs from 12 adolescent subjects with AD/HD and 11 age-matched healthy subjects in the resting state with eyes closed and eyes open. We found that AD/HD patients exhibited significantly faster changes in dynamics than controls in the right temporal region during the eyes closed condition, but slower changes in dynamics in the frontal region during the eyes open condition. AD/HD patients exhibited a disruption in the rate of change of dynamics in the frontotemporal region at rest, probably due to executive and attention processes. We suggest that the DNA using complementary local and global features based on the duration of dynamical microstates could be a useful tool for the clinical diagnosis of subjects with AD/HD.
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