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Gong Y, Ge L, Li Q, Gong J, Chen M, Gao H, Kang J, Yu T, Li J, Xu H. Ethanol Causes Cell Death and Neuronal Differentiation Defect During Initial Neurogenesis of the Neural Retina by Disrupting Calcium Signaling in Human Retinal Organoids. Stem Cell Rev Rep 2023; 19:2790-2806. [PMID: 37603136 DOI: 10.1007/s12015-023-10604-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/31/2023] [Indexed: 08/22/2023]
Abstract
Fetal Alcohol Syndrome (FAS) affects a significant proportion, exceeding 90%, of afflicted children, leading to severe ocular aberrations such as microphthalmia and optic nerve hypoplasia. During the early stages of pregnancy, the commencement of neural retina neurogenesis represents a critical period for human eye development, concurrently exposing the developing retinal structures to the highest risk of prenatal ethanol exposure due to a lack of awareness. Despite the paramount importance of this period, the precise influence and underlying mechanisms of short-term ethanol exposure on the developmental process of the human neural retina have remained largely elusive. In this study, we utilize the human embryonic stem cells derived retinal organoids (hROs) to recapitulate the initial retinal neurogenesis and find that 1% (v/v) ethanol slows the growth of hROs by inducing robust cell death and retinal ganglion cell differentiation defect. Bulk RNA-seq analysis and two-photon microscope live calcium imaging reveal altered calcium signaling dynamics derived from ethanol-induced down-regulation of RYR1 and CACNA1S. Moreover, the calcium-binding protein RET, one of the downstream effector genes of the calcium signaling pathway, synergistically integrates ethanol and calcium signals to abort neuron differentiation and cause cell death. To sum up, our study illustrates the effect and molecular mechanism of ethanol on the initial neurogenesis of the human embryonic neural retina, providing a novel interpretation of the ocular phenotype of FAS and potentially informing preventative measures for susceptible populations.
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Affiliation(s)
- Yu Gong
- Southwest Hospital/ Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, People's Republic of China
- Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, People's Republic of China
- Department of Ophthalmology, University-Town Hospital of Chongqing Medical University, Chongqing, China
| | - Lingling Ge
- Southwest Hospital/ Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, People's Republic of China
- Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, People's Republic of China
| | - Qiyou Li
- Southwest Hospital/ Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, People's Republic of China
- Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, People's Republic of China
| | - Jing Gong
- Southwest Hospital/ Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, People's Republic of China
- Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, People's Republic of China
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Min Chen
- Southwest Hospital/ Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, People's Republic of China
- Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, People's Republic of China
| | - Hui Gao
- Southwest Hospital/ Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, People's Republic of China
- Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, People's Republic of China
| | - Jiahui Kang
- Southwest Hospital/ Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, People's Republic of China
- Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, People's Republic of China
| | - Ting Yu
- Department of Clinical Laboratory, The 89th Hospital of The People's Liberation Army, Weifang, People's Republic of China
| | - Jiawen Li
- Department of Ophthalmology, University-Town Hospital of Chongqing Medical University, Chongqing, China.
| | - Haiwei Xu
- Southwest Hospital/ Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, People's Republic of China.
- Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing, People's Republic of China.
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Rahdar M, Hajisoltani R, Davoudi S, Karimi SA, Borjkhani M, Khatibi VA, Hosseinmardi N, Behzadi G, Janahmadi M. Alterations in the intrinsic discharge activity of CA1 pyramidal neurons associated with possible changes in the NADPH diaphorase activity in a rat model of autism induced by prenatal exposure to valproic acid. Brain Res 2022; 1792:148013. [PMID: 35841982 DOI: 10.1016/j.brainres.2022.148013] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/24/2022] [Accepted: 07/10/2022] [Indexed: 11/02/2022]
Abstract
Autism spectrum disorder is a neurodevelopmental disorder characterized by sensory abnormalities, social skills impairment and cognitive deficits. Although recent evidence indicated that induction of autism-like behavior in animal models causes abnormal neuronal excitability, the impact of autism on neuronal properties is still an important issue. Thus, new findings at the cellular level may shed light on the pathophysiology of autism and may help to find effective treatment strategies. Here, we investigated the behavioral, electrophysiological and histochemical impacts of prenatal exposure to valproic acid (VPA) in rats. Findings revealed that VPA exposure caused a significant increase in the hot plate response latency. The novel object recognition ability was also impaired in VPA-exposed rats. Along with these behavioral alterations, neurons from VPA-exposed animals exhibited altered excitability features in response to depolarizing current injections relative to control neurons. In the VPA-exposed group, these changes consisted of a significant increase in the amplitude, evoked firing frequency and the steady-state standard deviation of spike timing of action potentials (APs). Moreover, the half-width, the AHP amplitude and the decay time constant of APs were significantly decreased in this group. These changes in the evoked electrophysiological properties were accompanied by intrinsic hyperexcitability and lower spike-frequency adaptation and also a significant increase in the number of NADPH-diaphorase stained neurons in the hippocampal CA1 area of the VPA-exposed rats. Taken together, findings demonstrate that abnormal nociception and recognition memory is associated with alterations in the neuronal responsiveness and nitrergic system in a rat model of autism-like.
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Affiliation(s)
- Mona Rahdar
- Department of Physiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Razieh Hajisoltani
- Physiology Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Shima Davoudi
- Department of Physiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyed Asaad Karimi
- Department of Physiology, School of Medicine, Hamadan University of Medical Sciences, Tehran, Iran
| | - Mehdi Borjkhani
- Department of Electrical Engineering, Urmia University of Technology, Urmia, Iran
| | - Vahid Ahli Khatibi
- Department of Physiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Narges Hosseinmardi
- Department of Physiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Gila Behzadi
- Department of Physiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahyar Janahmadi
- Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Andhika Rhaditya PA, Oishi K, Nishimura YV, Motoyama J. [Ca 2+] i fluctuation mediated by T-type Ca 2+ channel is required for the differentiation of cortical neural progenitor cells. Dev Biol 2022; 489:84-97. [PMID: 35690104 DOI: 10.1016/j.ydbio.2022.05.021] [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: 11/17/2021] [Revised: 05/27/2022] [Accepted: 05/28/2022] [Indexed: 11/17/2022]
Abstract
The fluctuation of intracellular calcium concentration ([Ca2+]i) is known to be involved in various processes in the development of central nervous system, such as the proliferation of neural progenitor cells (NPCs), migration of intermediate progenitor cells (IPCs) from the ventricular zone (VZ) to the subventricular zone (SVZ), and migration of immature neurons from the SVZ to cortical plate. However, the roles of [Ca2+]i fluctuation in NPC development, especially in the differentiation of the self-renewing NPCs into neuron-generating NPCs and immature neurons have not been elucidated. Using calcium imaging of acute cortical slices and cells isolated from mouse embryonic cortex, we examined temporal changes in the pattern of [Ca2+]i fluctuations in VZ cells from E12 to E16. We observed intracellular Ca2+ levels in Pax6-positive self-renewing NPCs decreased with their neural differentiation. In E11, Pax6-positive NPCs and Tuj1-positive immature neurons exhibited characteristic [Ca2+]i fluctuations; few Pax6-positive NPCs exhibited [Ca2+]i transient, but many Tuj1-positive immature neurons did, suggesting that the change in pattern of [Ca2+]i fluctuation correlate to their differentiation. The [Ca2+]i fluctuation during NPCs development was mostly mediated by the T-type calcium channel and blockage of T-type calcium channel in neurosphere cultures increased the number of spheres and inhibited neuronal differentiation. Consistent with this finding, knockdown of Cav3.1 by RNAi in vivo maintained Pax6-positive cells as self-renewing NPCs, and simultaneously suppressing their neuronal differentiation of NPCs into Tbr1-positive immature neurons. These results reveal that [Ca2+]i fluctuation mediated by Cav3.1 is required for the neural differentiation of Pax6-positive self-renewing NPCs.
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Affiliation(s)
- Putu Adi Andhika Rhaditya
- Laboratory of Developmental Neurobiology, Graduate School of Brain Science, Doshisha University, 1-3, Tatara-miyakodani, Kyotanabe, Kyoto, 610-0394, Japan
| | - Koji Oishi
- Organization of Advanced Research and Education, Doshisha University, 1-3, Tatara-miyakodani, Kyotanabe, Kyoto, 610-0394, Japan
| | - Yoshiaki V Nishimura
- Organization of Advanced Research and Education, Doshisha University, 1-3, Tatara-miyakodani, Kyotanabe, Kyoto, 610-0394, Japan; Division of Neuroscience, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, 1-15-1 Fukumuro, Miyagino-ku, Sendai, Miyagi, 983-8536, Japan
| | - Jun Motoyama
- Laboratory of Developmental Neurobiology, Graduate School of Brain Science, Doshisha University, 1-3, Tatara-miyakodani, Kyotanabe, Kyoto, 610-0394, Japan.
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Satoh A, Fujimoto S, Irie T, Suzuki T, Miyazaki Y, Tanaka K, Usami M, Takizawa T. Valproic acid promotes differentiation of adipose tissue-derived stem cells to neuronal cells selectively expressing functional N-type voltage-gated Ca 2+ channels. Biochem Biophys Res Commun 2022; 589:55-62. [PMID: 34891042 DOI: 10.1016/j.bbrc.2021.12.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/30/2021] [Accepted: 12/02/2021] [Indexed: 12/14/2022]
Abstract
The differentiation of adipose tissue-derived stem cells (ASCs) to neuronal cells is greatly promoted by valproic acid (VPA), and is synergistically enhanced by the following treatment with neuronal induction medium (NIM) containing cAMP-elevating agents. In the present study, we investigated the synergism between VPA and NIM in neuronal differentiation of ASCs, assessed by the expression of neurofilament medium polypeptide (NeFM), with respect to Ca2+ entry. VPA (2 mM) treatment for 3 days followed by NIM for 2 h synergistically increased the incidence of neuronal cells differentiated from ASCs to an extent more than VPA alone treatment for 6 days, shortening the time required for the differentiation. VPA increased intracellular Ca2+ and the mRNAs of voltage-gated Ca2+ channels, Cacna1b (Cav2.2) and Cacna1h (Cav3.2), in ASCs. Inward currents through Ca2+ channels were evoked electrophysiologically at high voltage potential in ASCs treated with VPA. NIM reduced the mRNAs of NeFM and Cacna1b in VPA-promoted neuronal differentiation of ASCs. It was concluded that functional N-type voltage-gated Ca2+ channels (Cav2.2) are selectively expressed in VPA-promoted neuronal differentiation of ASCs. NIM seems to enhance the mRNA translation of molecules required for the differentiation. Neuronal cells obtained from ASCs by this protocol will be used as a cell source for regenerative therapy of neurological disorders associated with altered Cav2.2 activity.
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Affiliation(s)
- Azusa Satoh
- Graduate School of Veterinary Medicine, Azabu University, Fuchinobe, Chuo-ku, Sagamihara, 252-5201, Japan
| | - Shinri Fujimoto
- Graduate School of Veterinary Medicine, Azabu University, Fuchinobe, Chuo-ku, Sagamihara, 252-5201, Japan
| | - Tomohiko Irie
- Division of Pharmacology, National Institute of Health Sciences, 3-25-26, Tonomachi, Kawasaki, Kanagawa, 210-9501, Japan
| | - Takehito Suzuki
- Graduate School of Veterinary Medicine, Azabu University, Fuchinobe, Chuo-ku, Sagamihara, 252-5201, Japan
| | - Yoko Miyazaki
- Graduate School of Veterinary Medicine, Azabu University, Fuchinobe, Chuo-ku, Sagamihara, 252-5201, Japan
| | - Kazuaki Tanaka
- Graduate School of Veterinary Medicine, Azabu University, Fuchinobe, Chuo-ku, Sagamihara, 252-5201, Japan
| | - Makoto Usami
- Graduate School of Veterinary Medicine, Azabu University, Fuchinobe, Chuo-ku, Sagamihara, 252-5201, Japan
| | - Tatsuya Takizawa
- Graduate School of Veterinary Medicine, Azabu University, Fuchinobe, Chuo-ku, Sagamihara, 252-5201, Japan.
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Yabuki Y, Matsuo K, Yu M, Xu J, Sakimura K, Shioda N, Fukunaga K. Cav3.1 t-type calcium channel is critical for cell proliferation and survival in newly generated cells of the adult hippocampus. Acta Physiol (Oxf) 2021; 232:e13613. [PMID: 33393208 DOI: 10.1111/apha.13613] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/29/2020] [Accepted: 12/30/2020] [Indexed: 11/27/2022]
Abstract
AIMS Adult hippocampal neurogenesis plays an important role in neuronal plasticity and maintenance in mammals. Low-threshold voltage-gated T-type calcium channels produce calcium spikes that increase fast action potentials in newborn cells in the hippocampal dentate gyrus (DG); however, their role in adult hippocampal neurogenesis remains unclear. Here, we demonstrate impaired adult hippocampal neurogenesis in Cav3.1T-type calcium channel knockout mice. METHODS AND RESULTS Cav3.1T-type calcium channel was predominantly localized in neuronal progenitor cells of the mouse hippocampal DG. By counting the number of 5-bromo-2'-deoxyuridine-labeled cells, decreased proliferation and survival of newly generated cells were observed in the adult hippocampal DG in Cav3.1 knockout mice as compared to wild-type (WT) mice. Moreover, the degree of maturation of doublecortin-positive cells in Cav3.1 knockout mice was lower than that in WT mice, suggesting that Cav3.1 deletion may impair neuronal differentiation. Consistent with impaired hippocampal neurogenesis, Cav3.1 knockout mice showed decreased social interaction. Reduced phosphorylation levels of calcium/calmodulin-dependent protein kinase II and protein kinase B were closely associated with impaired hippocampal neurogenesis in Cav3.1 knockout mice. Moreover, the mRNA and protein expression levels of brain-derived neurotrophic factor, important for neurogenesis, were significantly decreased in Cav3.1 knockout mice. Finally, gene ontology analysis revealed alterations in genes related to the promotion of cell death/apoptosis and suppression of cell proliferation/neuronal differentiation pathways, including Bdnf. CONCLUSION These results suggest that the Cav3.1T-type calcium channel may be a key molecule required for cell proliferation, survival and neuronal differentiation in newly generated cells of the adult mouse hippocampus.
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Affiliation(s)
- Yasushi Yabuki
- Department of Genomic Neurology Institute of Molecular Embryology and Genetics Kumamoto University Kumamoto Japan
| | - Kazuya Matsuo
- Department of Pharmacology Graduate School of Pharmaceutical Sciences Tohoku University Sendai Japan
| | - Mengze Yu
- Department of Pharmacology Graduate School of Pharmaceutical Sciences Tohoku University Sendai Japan
| | - Jing Xu
- Department of Pharmacology Graduate School of Pharmaceutical Sciences Tohoku University Sendai Japan
| | - Kenji Sakimura
- Department of Cellular Neurobiology Brain Research InstituteNiigata University Niigata Japan
| | - Norifumi Shioda
- Department of Genomic Neurology Institute of Molecular Embryology and Genetics Kumamoto University Kumamoto Japan
| | - Kohji Fukunaga
- Department of Pharmacology Graduate School of Pharmaceutical Sciences Tohoku University Sendai Japan
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