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Autar K, Guo X, Rumsey JW, Long CJ, Akanda N, Jackson M, Narasimhan NS, Caneus J, Morgan D, Hickman JJ. A functional hiPSC-cortical neuron differentiation and maturation model and its application to neurological disorders. Stem Cell Reports 2021; 17:96-109. [PMID: 34942087 PMCID: PMC8758945 DOI: 10.1016/j.stemcr.2021.11.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 11/19/2021] [Accepted: 11/22/2021] [Indexed: 12/14/2022] Open
Abstract
The maturation and functional characteristics of human induced pluripotent stem cell (hiPSC)-cortical neurons has not been fully documented. This study developed a phenotypic model of hiPSC-derived cortical neurons, characterized their maturation process, and investigated its application for disease modeling with the integration of multi-electrode array (MEA) technology. Immunocytochemistry analysis indicated early-stage neurons (day 21) were simultaneously positive for both excitatory (vesicular glutamate transporter 1 [VGlut1]) and inhibitory (GABA) markers, while late-stage cultures (day 40) expressed solely VGlut1, indicating a purely excitatory phenotype without containing glial cells. This maturation process was further validated utilizing patch clamp and MEA analysis. Particularly, induced long-term potentiation (LTP) successfully persisted for 1 h in day 40 cultures, but only achieved LTP in the presence of the GABAA receptor antagonist picrotoxin in day 21 cultures. This system was also applied to epilepsy modeling utilizing bicuculline and its correction utilizing the anti-epileptic drug valproic acid. Characterization of human cortical neuronal differentiation to a mature phenotype Microelectrode evaluation of development from a mixed to pure excitatory population Utilization of defined culture stage to create an epilepsy model Manipulation of immaturity with inhibitors for maintaining long-term potentiation
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Affiliation(s)
- Kaveena Autar
- NanoScience Technology Center, University of Central Florida, 12424 Research Parkway, Suite 400, Orlando, FL 32826, USA
| | - Xiufang Guo
- NanoScience Technology Center, University of Central Florida, 12424 Research Parkway, Suite 400, Orlando, FL 32826, USA
| | - John W Rumsey
- Hesperos Inc., 12501 Research Parkway, Suite 100, Orlando, FL 32826, USA
| | - Christopher J Long
- Hesperos Inc., 12501 Research Parkway, Suite 100, Orlando, FL 32826, USA
| | - Nesar Akanda
- NanoScience Technology Center, University of Central Florida, 12424 Research Parkway, Suite 400, Orlando, FL 32826, USA
| | - Max Jackson
- Hesperos Inc., 12501 Research Parkway, Suite 100, Orlando, FL 32826, USA
| | | | - Julbert Caneus
- NanoScience Technology Center, University of Central Florida, 12424 Research Parkway, Suite 400, Orlando, FL 32826, USA
| | - Dave Morgan
- Department of Translational Science and Molecular Medicine, Michigan State University, College of Human Medicine, Grand Rapids Research Center, 400 Monroe Avenue NW, Grand Rapids, MI 49503, USA
| | - James J Hickman
- NanoScience Technology Center, University of Central Florida, 12424 Research Parkway, Suite 400, Orlando, FL 32826, USA; Hesperos Inc., 12501 Research Parkway, Suite 100, Orlando, FL 32826, USA.
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Xia Y, Ni W, Wang X, Yu Y, Zheng Q, Huang X. Exploring a molecular switch for dopamine oxidation induced by charge reversal using scanning electrochemical microscopy. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Tanaka Y, Watanabe H, Shimoda K, Sakamoto K, Hondo Y, Sentoku M, Sekine R, Kikuchi T, Yasuda K. Stepwise neuronal network pattern formation in agarose gel during cultivation using non-destructive microneedle photothermal microfabrication. Sci Rep 2021; 11:14656. [PMID: 34282174 PMCID: PMC8289850 DOI: 10.1038/s41598-021-93988-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 07/05/2021] [Indexed: 01/25/2023] Open
Abstract
Conventional neuronal network pattern formation techniques cannot control the arrangement of axons and dendrites because network structures must be fixed before neurite differentiation. To overcome this limitation, we developed a non-destructive stepwise microfabrication technique that can be used to alter microchannels within agarose to guide neurites during elongation. Micropatterns were formed in thin agarose layer coating of a cultivation dish using the tip of a 0.7 [Formula: see text]-diameter platinum-coated glass microneedle heated by a focused 1064-nm wavelength infrared laser, which has no absorbance of water. As the size of the heat source was 0.7 [Formula: see text], which is smaller than the laser wavelength, the temperature fell to 45 [Formula: see text] within a distance of 7.0 [Formula: see text] from the edge of the etched agarose microchannel. We exploited the fast temperature decay property to guide cell-to-cell connection during neuronal network cultivation. The first neurite of a hippocampal cell from a microchamber was guided to a microchannel leading to the target neuron with stepwise etching of the micrometer resolution microchannel in the agarose layer, and the elongated neurites were not damaged by the heat of etching. The results indicate the potential of this new technique for fully direction-controlled on-chip neuronal network studies.
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Affiliation(s)
- Yuhei Tanaka
- Department of Pure and Applied Physics, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, 169-8555, Japan
| | - Haruki Watanabe
- Department of Pure and Applied Physics, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, 169-8555, Japan
| | - Kenji Shimoda
- Department of Pure and Applied Physics, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, 169-8555, Japan
| | - Kazufumi Sakamoto
- Department of Pure and Applied Physics, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, 169-8555, Japan
| | - Yoshitsune Hondo
- Department of Pure and Applied Physics, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, 169-8555, Japan
| | - Mitsuru Sentoku
- Department of Pure and Applied Physics, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, 169-8555, Japan
| | - Rikuto Sekine
- Department of Physics, School of Advanced Science and Engineering, Waseda University, Tokyo, 169-8555, Japan
| | - Takahito Kikuchi
- Department of Pure and Applied Physics, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, 169-8555, Japan
| | - Kenji Yasuda
- Department of Pure and Applied Physics, Graduate School of Advanced Science and Engineering, Waseda University, Tokyo, 169-8555, Japan.
- Department of Physics, School of Advanced Science and Engineering, Waseda University, Tokyo, 169-8555, Japan.
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