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Liu Z, Luo X, Yan-Do R, Wang Y, Xie X, Li Z, Cheng SH, Shi P. Vertebrates on a Chip: Noninvasive Electrical and Optical Mapping of Whole Brain Activity Associated with Pharmacological Treatments. ACS Chem Neurosci 2024; 15:2121-2131. [PMID: 38775291 DOI: 10.1021/acschemneuro.4c00158] [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] [Indexed: 06/06/2024] Open
Abstract
Mapping brain activities is necessary for understanding brain physiology and discovering new treatments for neurological disorders. Such efforts have greatly benefited from the advancement in technologies for analyzing neural activity with improving temporal or spatial resolution. Here, we constructed a multielectrode array based brain activity mapping (BAM) system capable of stabilizing and orienting zebrafish larvae for recording electroencephalogram (EEG) like local field potential (LFP) signals and brain-wide calcium dynamics in awake zebrafish. Particularly, we designed a zebrafish trap chip that integrates with an eight-by-eight surface electrode array, so that brain electrophysiology can be noninvasively recorded in an agarose-free and anesthetic-free format with a high temporal resolution of 40 μs, matching the capability typically achieved by invasive LFP recording. Benefiting from the specially designed hybrid system, we can also conduct calcium imaging directly on immobilized awake larval zebrafish, which further supplies us with high spatial resolution brain-wide activity data. All of these innovations reconcile the limitations of sole LFP recording or calcium imaging, emphasizing a synergy of combining electrical and optical modalities within one unified device for activity mapping across a whole vertebrate brain with both improved spatial and temporal resolutions. The compatibility with in vivo drug treatment further makes it suitable for pharmacology studies based on multimodal measurement of brain-wide physiology.
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Affiliation(s)
- Zhen Liu
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
| | - Xuan Luo
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
| | - Richard Yan-Do
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
- Hong Kong Centre for Cerebro-Cardiovascular Health Engineering Hong Kong Science Park, Hong Kong SAR
| | - Yuan Wang
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
| | - Xi Xie
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou 510006, China
| | - Zhongping Li
- Institute of Environmental Science, Shanxi University, Taiyuan 030006, China
| | - Shuk Han Cheng
- Department of Biomedical Science, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
| | - Peng Shi
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
- Hong Kong Centre for Cerebro-Cardiovascular Health Engineering Hong Kong Science Park, Hong Kong SAR
- Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong Kowloon, Hong Kong SAR
- Shenzhen Research Institute, City University of Hong Kong Shenzhen, Guangdong 518057, China
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Salmina AB, Alexandrova OP, Averchuk AS, Korsakova SA, Saridis MR, Illarioshkin SN, Yurchenko SO. Current progress and challenges in the development of brain tissue models: How to grow up the changeable brain in vitro? J Tissue Eng 2024; 15:20417314241235527. [PMID: 38516227 PMCID: PMC10956167 DOI: 10.1177/20417314241235527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 02/12/2024] [Indexed: 03/23/2024] Open
Abstract
In vitro modeling of brain tissue is a promising but not yet resolved problem in modern neurobiology and neuropharmacology. Complexity of the brain structure and diversity of cell-to-cell communication in (patho)physiological conditions make this task almost unachievable. However, establishment of novel in vitro brain models would ultimately lead to better understanding of development-associated or experience-driven brain plasticity, designing efficient approaches to restore aberrant brain functioning. The main goal of this review is to summarize the available data on methodological approaches that are currently in use, and to identify the most prospective trends in development of neurovascular unit, blood-brain barrier, blood-cerebrospinal fluid barrier, and neurogenic niche in vitro models. The manuscript focuses on the regulation of adult neurogenesis, cerebral microcirculation and fluids dynamics that should be reproduced in the in vitro 4D models to mimic brain development and its alterations in brain pathology. We discuss approaches that are critical for studying brain plasticity, deciphering the individual person-specific trajectory of brain development and aging, and testing new drug candidates in the in vitro models.
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Affiliation(s)
- Alla B Salmina
- Brain Science Institute, Research Center of Neurology, Moscow, Russia
- Bauman Moscow State Technical University, Moscow, Russia
| | - Olga P Alexandrova
- Brain Science Institute, Research Center of Neurology, Moscow, Russia
- Bauman Moscow State Technical University, Moscow, Russia
| | - Anton S Averchuk
- Brain Science Institute, Research Center of Neurology, Moscow, Russia
- Bauman Moscow State Technical University, Moscow, Russia
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Luttge R. Editorial for the Special Issue on Microfluidic Brain-on-a-Chip. MICROMACHINES 2021; 12:mi12091100. [PMID: 34577743 PMCID: PMC8470451 DOI: 10.3390/mi12091100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 09/07/2021] [Indexed: 11/16/2022]
Abstract
A little longer than a decade of Organ-on-Chip (OoC) developments has passed [...].
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Affiliation(s)
- Regina Luttge
- Neuro-Nanoscale Engineering, Department of Mechanical Engineering/Microsystems and Institute of Complex Molecular Systems, Eindhoven Artificial Intelligence Systems Institute, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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