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Liang Y, Ormazabal-Toledo R, Yao S, Shi YS, Herrera-Molina R, Montag D, Lin X. Deafness causing neuroplastin missense variants fail to promote plasma membrane Ca 2+-ATPase levels and Ca 2+ transient regulation in brain neurons. J Biol Chem 2024; 300:107474. [PMID: 38879011 PMCID: PMC11264175 DOI: 10.1016/j.jbc.2024.107474] [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] [Received: 02/12/2024] [Revised: 06/06/2024] [Accepted: 06/09/2024] [Indexed: 07/08/2024] Open
Abstract
Hearing, the ability to sense sounds, and the processing of auditory information are important for perception of the world. Mice lacking expression of neuroplastin (Np), a type-1 transmembrane glycoprotein, display deafness, multiple cognitive deficiencies, and reduced expression of plasma membrane calcium (Ca2+) ATPases (PMCAs) in cochlear hair cells and brain neurons. In this study, we transferred the deafness causing missense mutations pitch (C315S) and audio-1 (I122N) into human Np (hNp) constructs and investigated their effects at the molecular and cellular levels. Computational molecular dynamics show that loss of the disulfide bridge in hNppitch causes structural destabilization of immunoglobulin-like domain (Ig) III and that the novel asparagine in hNpaudio-1 results in steric constraints and an additional N-glycosylation site in IgII. Additional N-glycosylation of hNpaudio-1 was confirmed by PNGaseF treatment. In comparison to hNpWT, transfection of hNppitch and hNpaudio-1 into HEK293T cells resulted in normal mRNA levels but reduced the Np protein levels and their cell surface expression due to proteasomal/lysosomal degradation. Furthermore, hNppitch and hNpaudio-1 failed to promote exogenous PMCA levels in HEK293T cells. In hippocampal neurons, expression of additional hNppitch or hNpaudio-1 was less efficient than hNpWT to elevate endogenous PMCA levels and to accelerate the restoration of basal Ca2+ levels after electrically evoked Ca2+ transients. We propose that mutations leading to pathological Np variants, as exemplified here by the deafness causing Np mutants, can affect Np-dependent Ca2+ regulatory mechanisms and may potentially cause intellectual and cognitive deficits in humans.
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Affiliation(s)
- Yi Liang
- Neurogenetics Laboratory, Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Rodrigo Ormazabal-Toledo
- Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - Songhui Yao
- Guangdong Institute of Intelligence Science and Technology, Zhuhai, Guangdong, China
| | - Yun Stone Shi
- Guangdong Institute of Intelligence Science and Technology, Zhuhai, Guangdong, China
| | - Rodrigo Herrera-Molina
- Neurogenetics Laboratory, Leibniz Institute for Neurobiology, Magdeburg, Germany; Centro Integrativo de Biología y Química Aplicada, Universidad Bernardo O'Higgins, Santiago, Chile
| | - Dirk Montag
- Neurogenetics Laboratory, Leibniz Institute for Neurobiology, Magdeburg, Germany.
| | - Xiao Lin
- Neurogenetics Laboratory, Leibniz Institute for Neurobiology, Magdeburg, Germany; Guangdong Institute of Intelligence Science and Technology, Zhuhai, Guangdong, China.
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Xu L, Wang Y, Jiao Y, Huang Y, Xu R, Gu X, Zhang W, Ma Z. Involvement of Spinal Neuroplastin 65 in Neuropathic Pain by GABAA Receptor α2 Subunit Regulation. Anesth Analg 2024:00000539-990000000-00797. [PMID: 38507554 DOI: 10.1213/ane.0000000000006964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
BACKGROUND Neuropathic pain (NP) is a highly challenging condition with complex pathological mechanisms, and the spinal gamma aminobutyric acid A receptor receptor plays a crucial role in its progression. Recent studies have revealed a potential interaction between neuroplastin 65 (NP65) and gamma aminobutyric acid A receptor α2 subunit (GABAAR-α2) on the cell surface. We hypothesize that NP65 is involved in the pathogenesis of NP by regulating the level of GABAAR-α2. METHODS A chronic constrictive injury (CCI) pain model was established in male Sprague-Dawley rats to verify the change in spinal NP65 expression. Alterations in pain behavior and GABAAR-α2 protein expression were observed after intrathecal injection of NP65 overexpressing adeno-associated virus (AAV) in CCI rats. In vitro investigations on Neuroblastoma 2a cells, the effect of NP65 on GABAAR-α2 expression via the calcineurin-nuclear factor of activated T-cell 4 (CaN-NFATc4) signaling pathway was evaluated by manipulating NP65 expression. RESULTS The expression level of NP65 protein and mRNA in the CCI group were significantly decreased (P < .05; analysis of variance [ANOVA]). After intrathecal injection of NP65, overexpression of AAV and pain behavior in CCI rats were significantly alleviated, and levels of GABAAR-α2 were upregulated. In vitro experiments verified alterations in the expression of GABAAR-α2, CaN, and phosphorylated NFATc4 on the application of NP65 with plasmid or small interfering RNA, respectively. After the application of the specific CaN inhibitor cyclosporine A (CsA), the changes in NP65 expression did not produce subsequent alterations in the expression of GABAAR-α2, CaN, or phosphorylated NFATc4 proteins. CONCLUSIONS NP65 modulates the level of GABAAR-α2 through the CaN-NFATc4 signaling pathway, which may serve as the underlying mechanism of NP.
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Affiliation(s)
- Li Xu
- From the Department of Anesthesiology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, China
| | - Yu Wang
- Department of Anesthesiology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Yang Jiao
- Department of Anesthesiology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Yulin Huang
- Department of Anesthesiology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Rui Xu
- Department of Anesthesiology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Xiaoping Gu
- Department of Anesthesiology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Wei Zhang
- Department of Anesthesiology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Zhengliang Ma
- From the Department of Anesthesiology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, China
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Doğanyiğit Z, Okan A, Yılmaz S, Uğuz AC, Akyüz E. Gender-related variation expressions of neuroplastin TRAF6, GluA1, GABA(A) receptor, and PMCA in cortex, hippocampus, and brainstem in an experimental epilepsy model. Synapse 2024; 78:e22289. [PMID: 38436644 DOI: 10.1002/syn.22289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 01/19/2024] [Accepted: 02/13/2024] [Indexed: 03/05/2024]
Abstract
Epileptic seizures are seen as a result of changing excitability balance depending on the deterioration in synaptic plasticity in the brain. Neuroplastin, and its related molecules which are known to play a role in synaptic plasticity, neurotransmitter activities that provide balance of excitability and, different neurological diseases, have not been studied before in epilepsy. In this study, a total of 34 Sprague-Dawley male and female rats, 2 months old, weighing 250-300 g were used. The epilepsy model in rats was made via pentylenetetrazole (PTZ). After the completion of the experimental procedure, the brain tissue of the rats were taken and the histopathological changes in the hippocampus and cortex parts and the brain stem were investigated, as well as the immunoreactivity of the proteins related to the immunohistochemical methods. As a result of the histopathological evaluation, it was determined that neuron degeneration and the number of dilated blood vessels in the hippocampus, frontal cortex, and brain stem were higher in the PTZ status epilepticus (SE) groups than in the control groups. It was observed that neuroplastin and related proteins TNF receptor-associated factor 6 (TRAF6), Gamma amino butyric acid type A receptors [(GABA(A)], and plasma membrane Ca2+ ATPase (PMCA) protein immunoreactivity levels increased especially in the male hippocampus, and only AMPA receptor subunit type 1 (GluA1) immunoreactivity decreased, unlike other proteins. We believe this may be caused by a problem in the mechanisms regulating the interaction of neuroplastin and GluA1 and may cause problems in synaptic plasticity in the experimental epilepsy model. It may be useful to elucidate this mechanism and target GluA1 when determining treatment strategies.
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Affiliation(s)
- Züleyha Doğanyiğit
- Faculty of Medicine, Department of Histology and Embryology, Yozgat Bozok University, Yozgat, Turkey
| | - Aslı Okan
- Faculty of Medicine, Department of Histology and Embryology, Yozgat Bozok University, Yozgat, Turkey
| | - Seher Yılmaz
- Faculty of Medicine, Department of Anatomy, Yozgat Bozok University, Yozgat, Turkey
| | - A Cihangir Uğuz
- Faculty of Medicine, Department of Biophysics, Karamanoglu Mehmetbey University, Karaman, Turkey
| | - Enes Akyüz
- Faculty of International Medicine, Department of Biophysics, University of Health Sciences, Istanbul, Turkey
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Chen J, Lin X, Bhattacharya S, Wiesehöfer C, Wennemuth G, Müller K, Montag D. Neuroplastin Expression in Male Mice Is Essential for Fertility, Mating, and Adult Testosterone Levels. Int J Mol Sci 2023; 25:177. [PMID: 38203350 PMCID: PMC10779036 DOI: 10.3390/ijms25010177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/14/2023] [Accepted: 12/19/2023] [Indexed: 01/12/2024] Open
Abstract
Male reproduction depends on hormonally driven behaviors and numerous genes for testis development and spermatogenesis. Neuroplastin-deficient (Nptn-/-) male mice cannot sire offspring. By immunohistochemistry, we characterized neuroplastin expression in the testis. Breeding, mating behavior, hormonal regulation, testicular development, and spermatogenesis were analyzed in cell-type specific neuroplastin mutant mice. Leydig, Sertoli, peritubular myoid, and germ cells express Np, but spermatogenesis and sperm number are not affected in Nptn-/- males. Neuroplastin lack from CNS neurons or restricted to spermatogonia or Sertoli cells permitted reproduction. Normal luteinizing hormone (LH) and follicle-stimulating hormone (FSH) blood levels in Nptn-/- males support undisturbed hormonal regulation in the brain. However, Nptn-/- males lack mounting behavior accompanied by low testosterone blood levels. Testosterone rise from juvenile to adult blood levels is absent in Nptn-/- males. LH-receptor stimulation raising intracellular Ca2+ in Leydig cells triggers testosterone production. Reduced Plasma Membrane Ca2+ ATPase 1 (PMCA1) in Nptn-/- Leydig cells suggests that Nptn-/- Leydig cells produce sufficient testosterone for testis and sperm development, but a lack of PMCA-Np complexes prevents the increase from reaching adult blood levels. Behavioral immaturity with low testosterone blood levels underlies infertility of Nptn-/- males, revealing that Np is essential for reproduction.
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Affiliation(s)
- Juanjuan Chen
- Neurogenetics, Leibniz Institute for Neurobiology, Brenneckestr. 6, D-39118 Magdeburg, Germany; (J.C.); (X.L.); (S.B.)
| | - Xiao Lin
- Neurogenetics, Leibniz Institute for Neurobiology, Brenneckestr. 6, D-39118 Magdeburg, Germany; (J.C.); (X.L.); (S.B.)
| | - Soumee Bhattacharya
- Neurogenetics, Leibniz Institute for Neurobiology, Brenneckestr. 6, D-39118 Magdeburg, Germany; (J.C.); (X.L.); (S.B.)
| | - Caroline Wiesehöfer
- Department of Anatomy, University Hospital, University Duisburg-Essen, Hufelandstr. 55, D-45147 Essen, Germany; (C.W.); (G.W.)
| | - Gunther Wennemuth
- Department of Anatomy, University Hospital, University Duisburg-Essen, Hufelandstr. 55, D-45147 Essen, Germany; (C.W.); (G.W.)
| | - Karin Müller
- Leibniz Institute for Zoo and Wildlife Research IZW, Alfred-Kowalke-Str. 17, D-10315 Berlin, Germany;
| | - Dirk Montag
- Neurogenetics, Leibniz Institute for Neurobiology, Brenneckestr. 6, D-39118 Magdeburg, Germany; (J.C.); (X.L.); (S.B.)
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Newton S, Aguilar C, Bunton-Stasyshyn RK, Flook M, Stewart M, Marcotti W, Brown S, Bowl MR. Absence of Embigin accelerates hearing loss and causes sub-viability, brain and heart defects in C57BL/6N mice due to interaction with Cdh23ahl. iScience 2023; 26:108056. [PMID: 37854703 PMCID: PMC10579432 DOI: 10.1016/j.isci.2023.108056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 08/08/2023] [Accepted: 09/22/2023] [Indexed: 10/20/2023] Open
Abstract
Mouse studies continue to help elaborate upon the genetic landscape of mammalian disease and the underlying molecular mechanisms. Here, we have investigated an Embigintm1b allele maintained on a standard C57BL/6N background and on a co-isogenic C57BL/6N background in which the Cdh23ahl allele has been "repaired." The hypomorphic Cdh23ahl allele is present in several commonly used inbred mouse strains, predisposing them to progressive hearing loss, starting in high-frequency regions. Absence of the neural cell adhesion molecule Embigin on the standard C57BL/6N background leads to accelerated hearing loss and causes sub-viability, brain and cardiac defects. Contrastingly, Embigintm1b/tm1b mice maintained on the co-isogenic "repaired" C57BL/6N background exhibit normal hearing and viability. Thus Embigin genetically interacts with Cdh23. Importantly, our study is the first to demonstrate an effect of the common Cdh23ahl allele outside of the auditory system, which has important ramifications for genetic studies involving inbred strains carrying this allele.
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Affiliation(s)
- Sherylanne Newton
- Mammalian Genetics Unit, Medical Research Council Harwell Institute, Harwell Oxford, Oxfordshire OX11 0RD, UK
- UCL Ear Institute, University College London, 332 Gray’s Inn Road, London WC1X 8EE, UK
| | - Carlos Aguilar
- Mammalian Genetics Unit, Medical Research Council Harwell Institute, Harwell Oxford, Oxfordshire OX11 0RD, UK
- UCL Ear Institute, University College London, 332 Gray’s Inn Road, London WC1X 8EE, UK
| | | | - Marisa Flook
- UCL Ear Institute, University College London, 332 Gray’s Inn Road, London WC1X 8EE, UK
| | - Michelle Stewart
- The Mary Lyon Centre, Medical Research Council Harwell Institute, Oxford, Oxfordshire OX11 0RD, UK
| | - Walter Marcotti
- School of Biomedical Science, University of Sheffield, Sheffield S10 2TN, UK
- Sheffield Neuroscience Institute, University of Sheffield, Sheffield S10 2TN, UK
| | - Steve Brown
- Mammalian Genetics Unit, Medical Research Council Harwell Institute, Harwell Oxford, Oxfordshire OX11 0RD, UK
| | - Michael R. Bowl
- Mammalian Genetics Unit, Medical Research Council Harwell Institute, Harwell Oxford, Oxfordshire OX11 0RD, UK
- UCL Ear Institute, University College London, 332 Gray’s Inn Road, London WC1X 8EE, UK
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Li S, Wei X, Huang H, Ye L, Ma M, Sun L, Lu Y, Wu Y. Neuroplastin exerts antiepileptic effects through binding to the α1 subunit of GABA type A receptors to inhibit the internalization of the receptors. J Transl Med 2023; 21:707. [PMID: 37814294 PMCID: PMC10563248 DOI: 10.1186/s12967-023-04596-4] [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] [Received: 12/26/2022] [Accepted: 10/04/2023] [Indexed: 10/11/2023] Open
Abstract
BACKGROUND Seizures are associated with a decrease in γ-aminobutyric type A acid receptors (GABAaRs) on the neuronal surface, which may be regulated by enhanced internalization of GABAaRs. When interactions between GABAaR subunit α-1 (GABRA1) and postsynaptic scaffold proteins are weakened, the α1-containing GABAaRs leave the postsynaptic membrane and are internalized. Previous evidence suggested that neuroplastin (NPTN) promotes the localization of GABRA1 on the postsynaptic membrane. However, the association between NPTN and GABRA1 in seizures and its effect on the internalization of α1-containing GABAaRs on the neuronal surface has not been studied before. METHODS An in vitro seizure model was constructed using magnesium-free extracellular fluid, and an in vivo model of status epilepticus (SE) was constructed using pentylenetetrazole (PTZ). Additionally, in vitro and in vivo NPTN-overexpression models were constructed. Electrophysiological recordings and internalization assays were performed to evaluate the action potentials and miniature inhibitory postsynaptic currents of neurons, as well as the intracellular accumulation ratio of α1-containing GABAaRs in neurons. Western blot analysis was performed to detect the expression of GABRA1 and NPTN both in vitro and in vivo. Immunofluorescence co-localization analysis and co-immunoprecipitation were performed to evaluate the interaction between GABRA1 and NPTN. RESULTS The expression of GABRA1 was found to be decreased on the neuronal surface both in vivo and in vitro seizure models. In the in vitro seizure model, α1-containing GABAaRs showed increased internalization. NPTN expression was found to be positively correlated with GABRA1 expression on the neuronal surface both in vivo and in vitro seizure models. In addition, NPTN overexpression alleviated seizures and NPTN was shown to bind to GABRA1 to form protein complexes that can be disrupted during seizures in both in vivo and in vitro models. Furthermore, NPTN was found to inhibit the internalization of α1-containing GABAaRs in the in vitro seizure model. CONCLUSION Our findings provide evidence that NPTN may exert antiepileptic effects by binding to GABRA1 to inhibit the internalization of α1-containing GABAaRs.
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Affiliation(s)
- Sijun Li
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Shuangyong Road No.6, Nanning, Guangxi, China
| | - Xing Wei
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Shuangyong Road No.6, Nanning, Guangxi, China
| | - Hongmi Huang
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Shuangyong Road No.6, Nanning, Guangxi, China
| | - Lin Ye
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Shuangyong Road No.6, Nanning, Guangxi, China
| | - Meigang Ma
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Shuangyong Road No.6, Nanning, Guangxi, China
| | - Lanfeng Sun
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Shuangyong Road No.6, Nanning, Guangxi, China
| | - Yuling Lu
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Shuangyong Road No.6, Nanning, Guangxi, China
| | - Yuan Wu
- Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Guangxi Medical University, Shuangyong Road No.6, Nanning, Guangxi, China.
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7
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Wu DD, Cheng J, Zheng YN, Liu YT, Hou SX, Liu LF, Huang L, Yuan QL. Neuroplastin 65 deficiency reduces amyloid plaque formation and cognitive deficits in an Alzheimer's disease mouse model. Front Cell Neurosci 2023; 17:1129773. [PMID: 37213217 PMCID: PMC10196121 DOI: 10.3389/fncel.2023.1129773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 04/17/2023] [Indexed: 05/23/2023] Open
Abstract
Introduction Alzheimer's disease (AD) is characterized by increasing cognitive dysfunction, progressive cerebral amyloid beta (Aβ) deposition, and neurofibrillary tangle aggregation. However, the molecular mechanisms of AD pathologies have not been completely understood. As synaptic glycoprotein neuroplastin 65 (NP65) is related with synaptic plasticity and complex molecular events underlying learning and memory, we hypothesized that NP65 would be involved in cognitive dysfunction and Aβ plaque formation of AD. For this purpose, we examined the role of NP65 in the transgenic amyloid precursor protein (APP)/presenilin 1 (PS1) mouse model of AD. Methods Neuroplastin 65-knockout (NP65-/-) mice crossed with APP/PS1 mice to get the NP65-deficient APP/PS1 mice. In the present study, a separate cohort of NP65-deficient APP/PS1 mice were used. First, the cognitive behaviors of NP65-deficient APP/PS1 mice were assessed. Then, Aβ plaque burden and Aβ levels in NP65-deficient APP/PS1 mice were measured by immunostaining and western blot as well as ELISA. Thirdly, immunostaining and western blot were used to evaluate the glial response and neuroinflammation. Finally, protein levels of 5-hydroxytryptamin (serotonin) receptor 3A and synaptic proteins and neurons were measured. Results We found that loss of NP65 alleviated the cognitive deficits of APP/PS1 mice. In addition, Aβ plaque burden and Aβ levels were significantly reduced in NP65-deficient APP/PS1 mice compared with control animals. NP65-loss in APP/PS1 mice resulted in a decrease in glial activation and the levels of pro- and anti-inflammatory cytokines (IL-1β, TNF-α, and IL-4) as well as protective matrix YM-1 and Arg-1, but had no effect on microglial phenotype. Moreover, NP65 deficiency significantly reversed the increase in 5-hydroxytryptamine (serotonin) receptor 3A (Htr3A) expression levels in the hippocampus of APP/PS1 mice. Discussion These findings identify a previously unrecognized role of NP65 in cognitive deficits and Aβ formation of APP/PS1 mice, and suggest that NP65 may serve as a potential therapeutic target for AD.
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Affiliation(s)
- Dan-Dan Wu
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jie Cheng
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Ya-Ni Zheng
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yu-Tong Liu
- Department of Radiology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Shuang-Xin Hou
- Department of Neurobiology, Shanghai Pudong Hospital, Fudan University, Shanghai, China
| | - Li-Fen Liu
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Liang Huang
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
- Department of Human Anatomy, Histology and Embryology, Tongji University School of Medicine, Shanghai, China
| | - Qiong-Lan Yuan
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
- Department of Human Anatomy, Histology and Embryology, Tongji University School of Medicine, Shanghai, China
- *Correspondence: Qiong-Lan Yuan,
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Adasme T, Hidalgo C, Herrera-Molina R. Editorial: Emerging views and players in neuronal calcium signaling: synaptic plasticity, learning/memory, aging and neuroinflammation. Front Cell Neurosci 2023; 17:1197417. [PMID: 37138767 PMCID: PMC10150380 DOI: 10.3389/fncel.2023.1197417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 04/03/2023] [Indexed: 05/05/2023] Open
Affiliation(s)
- Tatiana Adasme
- Faculty of Medicine, Biomedical Research Institute (BNI), Universidad de Chile, Santiago, Chile
- Clinical Hospital and Laboratory of Translational Psychiatry, Department of Neuroscience and Department de Psychiatry North, Center for Advanced Clinical Investigation (CICA), Universidad de Chile, Santiago, Chile
- Department of Neuroscience, Physiology and Biophysics Program, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, Center for Exercise, Metabolism and Cancer (CEMC), Universidad de Chile, Santiago, Chile
| | - Cecilia Hidalgo
- Faculty of Medicine, Biomedical Research Institute (BNI), Universidad de Chile, Santiago, Chile
- Department of Neuroscience, Physiology and Biophysics Program, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, Center for Exercise, Metabolism and Cancer (CEMC), Universidad de Chile, Santiago, Chile
| | - Rodrigo Herrera-Molina
- Laboratory of Synaptic Signaling, Leibniz Institute for Neurobiology, Magdeburg, Germany
- Centro Integrativo de Biología y Química Aplicada, Universidad Bernardo O‘Higgins, Santiago, Chile
- *Correspondence: Rodrigo Herrera-Molina
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Garry DJ, Yannopoulos D, Alexy T. Revolutionizing cardiovascular medicine: targeted therapies for the cardiac conduction system. J Clin Invest 2022; 132:164192. [PMID: 36250459 PMCID: PMC9566887 DOI: 10.1172/jci164192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Arrhythmogenic cardiovascular disorders are associated with considerable morbidity and mortality. Whether cardiac conduction disease is caused by genetic defects, procedural perturbations, valvular disease, ischemia, aging, or heart failure, new therapies are warranted. In this issue of the JCI, Goodyer et al. used state-of-the-art technologies to image the cardiac conduction system (CCS) in real time and to deliver targeted therapies to the CCS and its subcomponents. These findings advance the ability to image and treat specific lineages within the adult heart with the potential for broader applications in the treatment of cardiovascular diseases.
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Affiliation(s)
- Daniel J. Garry
- Cardiovascular Division, Medicine Department
- Regenerative Medicine and Sciences Program
- Stem Cell Institute, and
| | - Demetris Yannopoulos
- Cardiovascular Division, Medicine Department
- Regenerative Medicine and Sciences Program
- Stem Cell Institute, and
- Center for Resuscitation Medicine, University of Minnesota, Minneapolis, Minnesota, USA
| | - Tamas Alexy
- Cardiovascular Division, Medicine Department
- Regenerative Medicine and Sciences Program
- Stem Cell Institute, and
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Hamoudi W, Tripathi MK, Ojha SK, Amal H. A cross-talk between nitric oxide and the glutamatergic system in a Shank3 mouse model of autism. Free Radic Biol Med 2022; 188:83-91. [PMID: 35716826 DOI: 10.1016/j.freeradbiomed.2022.06.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 06/06/2022] [Accepted: 06/07/2022] [Indexed: 11/21/2022]
Abstract
Nitric oxide (NO) is a multifunctional signaling molecule that plays a crucial role in synaptic transmission and neuronal function. Pioneering studies show that nitric oxide (NO) and S-nitrosylation (SNO, the NO-mediated posttranslational modification) can engender nitrosative stress in the brain, contributing to neurodegenerative diseases. Little is known, however, about the aberrant NO signaling in neurodevelopmental disorders including autism spectrum disorder (ASD). We have recently shown that the Shank3 mutation in mice representing a model of ASD causes excessive NO levels and aberrant protein SNO. The glutamatergic system is involved in ASD, specifically in SHANK3 pathology. We used SNOTRAP technology to identify the SNO-proteome in the brain of the Shank3 mutant mice to understand the role of SNO in the glutamatergic system during the development of these mice. We conducted a systems biology analysis of the SNO-proteome to investigate the biological processes and signaling pathways in the brain of juvenile and adult Shank3 mutant and wild-type mice. The Shank3 mutation caused significant SNO-enrichment of a glutamate signaling pathway in the juvenile and adult mutant mice, although different protein subsets were S-nitrosylated in both ages. Cellular compartments analysis showed that "glutamatergic Synapse" is SNO-enriched significantly in the mutant mice of both ages. We also found eight S-nitrosylated proteins involved in glutamate transmission in both ages. 38 SNO-proteins found in the mutant mice are among the high-risk SFARI gene list. Biochemical examination shows a reduction in the levels of NMDA Receptor (NR1) in the cortex and striatum of the mutant mice of both ages. Neuronal NOS knockdown in SHSY-5Y rescued NR1 levels. In conclusion, this study reveals novel SNO of key glutamatergic proteins in Shank3 mutant mice and a cross-talk between nitric oxide and the glutamatergic system.
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Affiliation(s)
- Wajeha Hamoudi
- Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, 91120, Israel
| | - Manish Kumar Tripathi
- Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, 91120, Israel
| | - Shashank Kumar Ojha
- Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, 91120, Israel
| | - Haitham Amal
- Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, 91120, Israel.
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11
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Malci A, Lin X, Sandoval R, Gundelfinger ED, Naumann M, Seidenbecher CI, Herrera-Molina R. Ca 2+ signaling in postsynaptic neurons: Neuroplastin-65 regulates the interplay between plasma membrane Ca 2+ ATPases and ionotropic glutamate receptors. Cell Calcium 2022; 106:102623. [PMID: 35853264 DOI: 10.1016/j.ceca.2022.102623] [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: 01/30/2022] [Revised: 06/28/2022] [Accepted: 07/05/2022] [Indexed: 11/17/2022]
Abstract
Upon postsynaptic glutamate receptor activation, the cytosolic Ca2+ concentration rises and initiates signaling and plasticity in spines. The plasma membrane Ca2+ ATPase (PMCA) is a major player to limit the duration of cytosolic Ca2+ signals. It forms complexes with the glycoprotein neuroplastin (Np) isoforms Np55 and Np65 and functionally interplays with N-methyl-D-aspartate (NMDA)-type ionotropic glutamate receptors (iGluNRs). Moreover, binding of the Np65-specific extracellular domain to Ca2+-permeable GluA1-containing α-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid (AMPA)-type ionotropic glutamate receptors (iGluA1Rs) was found to be required for long-term potentiation (LTP). However, the link between PMCA and iGluRs function to regulate cytosolic Ca2+ signals remained unclear. Here, we report that Np65 coordinates PMCA and iGluRs' functions to modulate the duration and amplitude of cytosolic Ca2+ transients in dendrites and spines of hippocampal neurons. Using live-cell Ca2+ imaging, acute pharmacological treatments, and GCaMP5G-expressing hippocampal neurons, we discovered that endogenous or Np65-promoted PMCA activity contributes to the restoration of basal Ca2+ levels and that this effect is dependent on iGluR activation. Super-resolution STED and confocal microscopy revealed that electrical stimulation increases the abundance of synaptic neuroplastin-PMCA complexes depending on iGluR activation and that low-rate overexpression of Np65 doubled PMCA levels and decreased cell surface levels of GluN2A and GluA1 in dendrites and Shank2-positive glutamatergic synapses. In neuroplastin-deficient hippocampi, we observed reduced PMCA and unchanged GluN2B levels, while GluN2A and GluA1 levels were imbalanced. Our electrophysiological data from hippocampal slices argues for an essential interplay of PMCA with GluN2A- but not with GluN2B-containing receptors upon induction of synaptic plasticity. Accordingly, we conclude that Np65 may interconnect PMCA with core players of glutamatergic neurotransmission to fine-tune the Ca2+ signal regulation in basal synaptic function and plasticity.
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Affiliation(s)
- Ayse Malci
- Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Xiao Lin
- Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Rodrigo Sandoval
- Departamento de Ciencias Biomédicas, Facultad de Medicina, Universidad Católica del Norte, Coquimbo, Chile
| | - Eckart D Gundelfinger
- Leibniz Institute for Neurobiology, Magdeburg, Germany; Center for Behavioral Brain Sciences, Magdeburg, Germany; Institute of Pharmacology and Toxicology, Medical Faculty, Otto von Guericke University, Magdeburg, Germany
| | - Michael Naumann
- Institute of Experimental Internal Medicine, Medical Faculty, Otto von Guericke University, Magdeburg, Germany
| | - Constanze I Seidenbecher
- Leibniz Institute for Neurobiology, Magdeburg, Germany; Center for Behavioral Brain Sciences, Magdeburg, Germany
| | - Rodrigo Herrera-Molina
- Center for Behavioral Brain Sciences, Magdeburg, Germany; Centro Integrativo de Biología y Química Aplicada, Universidad Bernardo O'Higgins, Santiago, Chile; Combinatorial Combinatorial NeuroImaging (CNI), Leibniz Institute for Neurobiology, Magdeburg, Germany.
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12
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Trnski S, Nikolić B, Ilic K, Drlje M, Bobic-Rasonja M, Darmopil S, Petanjek Z, Hranilovic D, Jovanov-Milosevic N. The Signature of Moderate Perinatal Hypoxia on Cortical Organization and Behavior: Altered PNN-Parvalbumin Interneuron Connectivity of the Cingulate Circuitries. Front Cell Dev Biol 2022; 10:810980. [PMID: 35295859 PMCID: PMC8919082 DOI: 10.3389/fcell.2022.810980] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 01/11/2022] [Indexed: 11/29/2022] Open
Abstract
This study was designed in a rat model to determine the hallmarks of possible permanent behavioral and structural brain alterations after a single moderate hypoxic insult. Eighty-two Wistar Han (RccHan: WIST) rats were randomly subjected to hypoxia (pO2 73 mmHg/2 h) or normoxia at the first postnatal day. The substantially increased blood lactate, a significantly decreased cytochrome-C-oxygenase expression in the brain, and depleted subventricular zone suggested a high vulnerability of subset of cell populations to oxidative stress and consequent tissue response even after a single, moderate, hypoxic event. The results of behavioral tests (open-field, hole-board, social-choice, and T-maze) applied at the 30–45th and 70–85th postnatal days revealed significant hyperactivity and a slower pace of learning in rats subjected to perinatal hypoxia. At 3.5 months after hypoxic insult, the histochemical examination demonstrated a significantly increased number of specific extracellular matrix—perineuronal nets and increased parvalbumin expression in a subpopulation of interneurons in the medial and retrosplenial cingulate cortex of these animals. Conclusively, moderate perinatal hypoxia in rats causes a long-lasting reorganization of the connectivity in the cingulate cortex and consequent alterations of related behavioral and cognitive abilities. This non-invasive hypoxia model in the rat successfully and complementarily models the moderate perinatal hypoxic injury in fetuses and prematurely born human babies and may enhance future research into new diagnostic and therapeutic strategies for perinatal medicine.
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Affiliation(s)
- Sara Trnski
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Barbara Nikolić
- Department of Biology, Faculty of Science, University of Zagreb, Zagreb, Croatia
| | - Katarina Ilic
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Zagreb, Croatia
- Department of Neuroimaging, BRAIN Centre, Institute of Psychiatry, Psychology, and Neuroscience, King’s College London, London, United Kingdom
| | - Matea Drlje
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Mihaela Bobic-Rasonja
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Zagreb, Croatia
- Department of Biology, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Sanja Darmopil
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Zagreb, Croatia
- Department of Anatomy and Clinical Anatomy, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Zdravko Petanjek
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Zagreb, Croatia
- Department of Anatomy and Clinical Anatomy, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Dubravka Hranilovic
- Department of Biology, Faculty of Science, University of Zagreb, Zagreb, Croatia
| | - Natasa Jovanov-Milosevic
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Zagreb, Croatia
- Department of Biology, School of Medicine, University of Zagreb, Zagreb, Croatia
- *Correspondence: Natasa Jovanov-Milosevic,
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13
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Montag D. Retrograde Amnesia - A Question of Disturbed Calcium Levels? Front Cell Neurosci 2022; 15:746198. [PMID: 34975406 PMCID: PMC8718400 DOI: 10.3389/fncel.2021.746198] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 12/02/2021] [Indexed: 11/13/2022] Open
Abstract
Retrograde amnesia is the inability to remember events or information. The successful acquisition and memory of information is required before retrograde amnesia may occur. Often, the trigger for retrograde amnesia is a traumatic event. Loss of memories may be caused in two ways: either by loss/erasure of the memory itself or by the inability to access the memory, which is still present. In general, memories and learning are associated with a positive connotation although the extinction of unpleasant experiences and memories of traumatic events may be highly welcome. In contrast to the many experimental models addressing learning deficits caused by anterograde amnesia, the incapability to acquire new information, retrograde amnesia could so far only be investigated sporadically in human patients and in a limited number of model systems. Apart from models and diseases in which neurodegeneration or dementia like Alzheimer’s disease result in loss of memory, retrograde amnesia can be elicited by various drugs of which alcohol is the most prominent one and exemplifies the non-specific effects and the variable duration. External or internal impacts like traumatic brain injury, stroke, or electroconvulsive treatments may similarly result in variable degrees of retrograde amnesia. In this review, I will discuss a new genetic approach to induce retrograde amnesia in a mouse model and raise the hypothesis that retrograde amnesia is caused by altered intracellular calcium homeostasis. Recently, we observed that neuronal loss of neuroplastin resulted in retrograde amnesia specifically for associative memories. Neuroplastin is tightly linked to the expression of the main Ca2+ extruding pumps, the plasma membrane calcium ATPases (PMCAs). Therefore, neuronal loss of neuroplastin may block the retrieval and storage of associative memories by interference with Ca2+ signaling cascades. The possibility to elicit retrograde amnesia in a controlled manner allows to investigate the underlying mechanisms and may provide a deeper understanding of the molecular and circuit processes of memory.
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Affiliation(s)
- Dirk Montag
- Neurogenetics Laboratory, Leibniz Institute for Neurobiology, Magdeburg, Germany
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14
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Newton S, Kong F, Carlton AJ, Aguilar C, Parker A, Codner GF, Teboul L, Wells S, Brown SDM, Marcotti W, Bowl MR. Neuroplastin genetically interacts with Cadherin 23 and the encoded isoform Np55 is sufficient for cochlear hair cell function and hearing. PLoS Genet 2022; 18:e1009937. [PMID: 35100259 PMCID: PMC8830789 DOI: 10.1371/journal.pgen.1009937] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 02/10/2022] [Accepted: 01/13/2022] [Indexed: 11/25/2022] Open
Abstract
Mammalian hearing involves the mechanoelectrical transduction (MET) of sound-induced fluid waves in the cochlea. Essential to this process are the specialised sensory cochlear cells, the inner (IHCs) and outer hair cells (OHCs). While genetic hearing loss is highly heterogeneous, understanding the requirement of each gene will lead to a better understanding of the molecular basis of hearing and also to therapeutic opportunities for deafness. The Neuroplastin (Nptn) gene, which encodes two protein isoforms Np55 and Np65, is required for hearing, and homozygous loss-of-function mutations that affect both isoforms lead to profound deafness in mice. Here we have utilised several distinct mouse models to elaborate upon the spatial, temporal, and functional requirement of Nptn for hearing. While we demonstrate that both Np55 and Np65 are present in cochlear cells, characterisation of a Np65-specific mouse knockout shows normal hearing thresholds indicating that Np65 is functionally redundant for hearing. In contrast, we find that Nptn-knockout mice have significantly reduced maximal MET currents and MET channel open probabilities in mature OHCs, with both OHCs and IHCs also failing to develop fully mature basolateral currents. Furthermore, comparing the hearing thresholds and IHC synapse structure of Nptn-knockout mice with those of mice that lack Nptn only in IHCs and OHCs shows that the majority of the auditory deficit is explained by hair cell dysfunction, with abnormal afferent synapses contributing only a small proportion of the hearing loss. Finally, we show that continued expression of Neuroplastin in OHCs of adult mice is required for membrane localisation of Plasma Membrane Ca2+ ATPase 2 (PMCA2), which is essential for hearing function. Moreover, Nptn haploinsufficiency phenocopies Atp2b2 (encodes PMCA2) mutations, with heterozygous Nptn-knockout mice exhibiting hearing loss through genetic interaction with the Cdh23ahl allele. Together, our findings provide further insight to the functional requirement of Neuroplastin for mammalian hearing.
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Affiliation(s)
- Sherylanne Newton
- Mammalian Genetics Unit, MRC Harwell Institute, Harwell Oxford, United Kingdom
| | - Fanbo Kong
- School of Sciences, University of Sheffield, Sheffield, United Kingdom
| | - Adam J. Carlton
- School of Sciences, University of Sheffield, Sheffield, United Kingdom
| | - Carlos Aguilar
- Mammalian Genetics Unit, MRC Harwell Institute, Harwell Oxford, United Kingdom
| | - Andrew Parker
- Mammalian Genetics Unit, MRC Harwell Institute, Harwell Oxford, United Kingdom
| | - Gemma F. Codner
- Mary Lyon Centre, MRC Harwell Institute, Harwell Oxford, United Kingdom
| | - Lydia Teboul
- Mary Lyon Centre, MRC Harwell Institute, Harwell Oxford, United Kingdom
| | - Sara Wells
- Mary Lyon Centre, MRC Harwell Institute, Harwell Oxford, United Kingdom
| | - Steve D. M. Brown
- Mammalian Genetics Unit, MRC Harwell Institute, Harwell Oxford, United Kingdom
| | - Walter Marcotti
- School of Sciences, University of Sheffield, Sheffield, United Kingdom
- Sheffield Neuroscience Institute, University of Sheffield, Sheffield, United Kingdom
| | - Michael R. Bowl
- Mammalian Genetics Unit, MRC Harwell Institute, Harwell Oxford, United Kingdom
- UCL Ear Institute, University College London, London, United Kingdom
- * E-mail:
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15
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Ilic K, Lin X, Malci A, Stojanović M, Puljko B, Rožman M, Vukelić Ž, Heffer M, Montag D, Schnaar RL, Kalanj-Bognar S, Herrera-Molina R, Mlinac-Jerkovic K. Plasma Membrane Calcium ATPase-Neuroplastin Complexes Are Selectively Stabilized in GM1-Containing Lipid Rafts. Int J Mol Sci 2021; 22:ijms222413590. [PMID: 34948386 PMCID: PMC8708829 DOI: 10.3390/ijms222413590] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/03/2021] [Accepted: 12/14/2021] [Indexed: 12/20/2022] Open
Abstract
The recent identification of plasma membrane (Ca2+)-ATPase (PMCA)-Neuroplastin (Np) complexes has renewed attention on cell regulation of cytosolic calcium extrusion, which is of particular relevance in neurons. Here, we tested the hypothesis that PMCA-Neuroplastin complexes exist in specific ganglioside-containing rafts, which could affect calcium homeostasis. We analyzed the abundance of all four PMCA paralogs (PMCA1-4) and Neuroplastin isoforms (Np65 and Np55) in lipid rafts and bulk membrane fractions from GM2/GD2 synthase-deficient mouse brains. In these fractions, we found altered distribution of Np65/Np55 and selected PMCA isoforms, namely PMCA1 and 2. Cell surface staining and confocal microscopy identified GM1 as the main complex ganglioside co-localizing with Neuroplastin in cultured hippocampal neurons. Furthermore, blocking GM1 with a specific antibody resulted in delayed calcium restoration of electrically evoked calcium transients in the soma of hippocampal neurons. The content and composition of all ganglioside species were unchanged in Neuroplastin-deficient mouse brains. Therefore, we conclude that altered composition or disorganization of ganglioside-containing rafts results in changed regulation of calcium signals in neurons. We propose that GM1 could be a key sphingolipid for ensuring proper location of the PMCA-Neuroplastin complexes into rafts in order to participate in the regulation of neuronal calcium homeostasis.
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Affiliation(s)
- Katarina Ilic
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia; (K.I.); (M.S.); (B.P.); (S.K.-B.)
- BRAIN Centre, Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience (IOPPN), King’s College London, London SE5 9NU, UK
| | - Xiao Lin
- Neurogenetics Laboratory, Leibniz Institute for Neurobiology, 39118 Magdeburg, Germany; (X.L.); (D.M.)
- Synaptic Signalling Laboratory, Combinatorial NeuroImaging, Leibniz Institute for Neurobiology, 39118 Magdeburg, Germany; (A.M.); (R.H.-M.)
| | - Ayse Malci
- Synaptic Signalling Laboratory, Combinatorial NeuroImaging, Leibniz Institute for Neurobiology, 39118 Magdeburg, Germany; (A.M.); (R.H.-M.)
| | - Mario Stojanović
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia; (K.I.); (M.S.); (B.P.); (S.K.-B.)
- Department of Chemistry and Biochemistry, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia;
| | - Borna Puljko
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia; (K.I.); (M.S.); (B.P.); (S.K.-B.)
- Department of Chemistry and Biochemistry, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia;
| | - Marko Rožman
- Department of Physical Chemistry, Ruđer Bošković Institute, 10000 Zagreb, Croatia;
| | - Željka Vukelić
- Department of Chemistry and Biochemistry, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia;
| | - Marija Heffer
- Department of Medical Biology and Genetics, Faculty of Medicine, University of Osijek, 31000 Osijek, Croatia;
| | - Dirk Montag
- Neurogenetics Laboratory, Leibniz Institute for Neurobiology, 39118 Magdeburg, Germany; (X.L.); (D.M.)
| | - Ronald L. Schnaar
- Departments of Pharmacology and Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA;
| | - Svjetlana Kalanj-Bognar
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia; (K.I.); (M.S.); (B.P.); (S.K.-B.)
- Department of Chemistry and Biochemistry, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia;
| | - Rodrigo Herrera-Molina
- Synaptic Signalling Laboratory, Combinatorial NeuroImaging, Leibniz Institute for Neurobiology, 39118 Magdeburg, Germany; (A.M.); (R.H.-M.)
- Centro Integrativo de Biología y Química Aplicada, Universidad Bernardo O’Higgins, Santiago 8307993, Chile
- Center for Behavioral Brain Sciences, 39120 Magdeburg, Germany
| | - Kristina Mlinac-Jerkovic
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia; (K.I.); (M.S.); (B.P.); (S.K.-B.)
- Department of Chemistry and Biochemistry, School of Medicine, University of Zagreb, 10000 Zagreb, Croatia;
- Correspondence:
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16
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Lin X, Liang Y, Herrera-Molina R, Montag D. Neuroplastin in Neuropsychiatric Diseases. Genes (Basel) 2021; 12:1507. [PMID: 34680901 PMCID: PMC8535836 DOI: 10.3390/genes12101507] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/20/2021] [Accepted: 09/21/2021] [Indexed: 02/07/2023] Open
Abstract
Molecular mechanisms underlying neuropsychiatric and neurodegenerative diseases are insufficiently elucidated. A detailed understanding of these mechanisms may help to further improve medical intervention. Recently, intellectual abilities, creativity, and amnesia have been associated with neuroplastin, a cell recognition glycoprotein of the immunoglobulin superfamily that participates in synapse formation and function and calcium signaling. Data from animal models suggest a role for neuroplastin in pathways affected in neuropsychiatric and neurodegenerative diseases. Neuroplastin loss or disruption of molecular pathways related to neuronal processes has been linked to various neurological diseases, including dementia, schizophrenia, and Alzheimer's disease. Here, we review the molecular features of the cell recognition molecule neuroplastin, and its binding partners, which are related to neurological processes and involved in learning and memory. The emerging functions of neuroplastin may have implications for the treatment of diseases, particularly those of the nervous system.
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Affiliation(s)
- Xiao Lin
- Neurogenetics Laboratory, Leibniz Institute for Neurobiology, Brenneckestr. 6, D-39118 Magdeburg, Germany; (X.L.); (Y.L.)
| | - Yi Liang
- Neurogenetics Laboratory, Leibniz Institute for Neurobiology, Brenneckestr. 6, D-39118 Magdeburg, Germany; (X.L.); (Y.L.)
| | - Rodrigo Herrera-Molina
- Combinatorial NeuroImaging (CNI), Leibniz Institute for Neurobiology, Brenneckestr. 6, D-39118 Magdeburg, Germany;
- Centro Integrativo de Biología y Química Aplicada, Universidad Bernardo O’Higgins, Santiago 8307993, Chile
- Center for Behavioral Brain Sciences (CBBS), D-39106 Magdeburg, Germany
| | - Dirk Montag
- Neurogenetics Laboratory, Leibniz Institute for Neurobiology, Brenneckestr. 6, D-39118 Magdeburg, Germany; (X.L.); (Y.L.)
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17
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Complexity and graded regulation of neuronal cell-type-specific alternative splicing revealed by single-cell RNA sequencing. Proc Natl Acad Sci U S A 2021; 118:2013056118. [PMID: 33674385 DOI: 10.1073/pnas.2013056118] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The enormous cellular diversity in the mammalian brain, which is highly prototypical and organized in a hierarchical manner, is dictated by cell-type-specific gene-regulatory programs at the molecular level. Although prevalent in the brain, the contribution of alternative splicing (AS) to the molecular diversity across neuronal cell types is just starting to emerge. Here, we systematically investigated AS regulation across over 100 transcriptomically defined neuronal types of the adult mouse cortex using deep single-cell RNA-sequencing data. We found distinct splicing programs between glutamatergic and GABAergic neurons and between subclasses within each neuronal class. These programs consist of overlapping sets of alternative exons showing differential splicing at multiple hierarchical levels. Using an integrative approach, our analysis suggests that RNA-binding proteins (RBPs) Celf1/2, Mbnl2, and Khdrbs3 are preferentially expressed and more active in glutamatergic neurons, while Elavl2 and Qk are preferentially expressed and more active in GABAergic neurons. Importantly, these and additional RBPs also contribute to differential splicing between neuronal subclasses at multiple hierarchical levels, and some RBPs contribute to splicing dynamics that do not conform to the hierarchical structure defined by the transcriptional profiles. Thus, our results suggest graded regulation of AS across neuronal cell types, which may provide a molecular mechanism to specify neuronal identity and function that are orthogonal to established classifications based on transcriptional regulation.
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18
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Ilic K, Mlinac-Jerkovic K, Sedmak G, Rosenzweig I, Kalanj-Bognar S. Neuroplastin in human cognition: review of literature and future perspectives. Transl Psychiatry 2021; 11:394. [PMID: 34282131 PMCID: PMC8289873 DOI: 10.1038/s41398-021-01509-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 06/16/2021] [Accepted: 06/23/2021] [Indexed: 02/07/2023] Open
Abstract
Synaptic glycoprotein neuroplastin is involved in synaptic plasticity and complex molecular events underlying learning and memory. Studies in mice and rats suggest that neuroplastin is essential for cognition, as it is needed for long-term potentiation and associative memory formation. Recently, it was found that some of the effects of neuroplastin are related to regulation of calcium homeostasis through interactions with plasma membrane calcium ATPases. Neuroplastin is increasingly seen as a key factor in complex brain functions, but studies in humans remain scarce. Here we summarize present knowledge about neuroplastin in human tissues and argue its genetic association with cortical thickness, intelligence, schizophrenia, and autism; specific immunolocalization depicting hippocampal trisynaptic pathway; potential role in tissue compensatory response in neurodegeneration; and high, almost housekeeping, level of spatio-temporal gene expression in the human brain. We also propose that neuroplastin acts as a housekeeper of neuroplasticity, and that it may be considered as an important novel cognition-related molecule in humans. Several promising directions for future investigations are suggested, which may complete our understanding of neuroplastin actions in molecular basis of human cognition.
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Affiliation(s)
- Katarina Ilic
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Šalata12, 10000, Zagreb, Croatia
| | - Kristina Mlinac-Jerkovic
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Šalata12, 10000, Zagreb, Croatia
| | - Goran Sedmak
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Šalata12, 10000, Zagreb, Croatia
| | - Ivana Rosenzweig
- Sleep and Brain Plasticity Centre, Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience (IoPPN), King's College London (KCL), Strand, London, WC2R 2LS, UK
- Sleep Disorders Centre, Guy's and St Thomas' Hospital, Great Maze Pond, London, SE1 9RT, UK
| | - Svjetlana Kalanj-Bognar
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Šalata12, 10000, Zagreb, Croatia.
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19
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Mlinac-Jerkovic K, Ilic K, Zjalić M, Mandić D, Debeljak Ž, Balog M, Damjanović V, Maček Hrvat N, Habek N, Kalanj-Bognar S, Schnaar RL, Heffer M. Who's in, who's out? Re-evaluation of lipid raft residents. J Neurochem 2021; 158:657-672. [PMID: 34081780 PMCID: PMC8363533 DOI: 10.1111/jnc.15446] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 05/19/2021] [Accepted: 05/19/2021] [Indexed: 01/01/2023]
Abstract
Lipid rafts, membrane microdomains enriched with (glyco)sphingolipids, cholesterol, and select proteins, act as cellular signalosomes. Various methods have been used to separate lipid rafts from bulk (non‐raft) membranes, but most often, non‐ionic detergent Triton X‐100 has been used in their isolation. However, Triton X‐100 is a reported disruptor of lipid rafts. Histological evidence confirmed raft disruption by Triton X‐100, but remarkably revealed raft stability to treatment with a related polyethylene oxide detergent, Brij O20. We report isolation of detergent‐resistant membranes from mouse brain using Brij O20 and its use to determine the distribution of major mammalian brain gangliosides, GM1, GD1a, GD1b and GT1b. A different distribution of gangliosides—classically used as a raft marker—was discovered using Brij O20 versus Triton X‐100. Immunohistochemistry and imaging mass spectrometry confirm the results. Use of Brij O20 results in a distinctive membrane distribution of gangliosides that is not all lipid raft associated, but depends on the ganglioside structure. This is the first report of a significant proportion of gangliosides outside raft domains. We also determined the distribution of proteins functionally related to neuroplasticity and known to be affected by ganglioside environment, glutamate receptor subunit 2, amyloid precursor protein and neuroplastin and report the lipid raft populations of these proteins in mouse brain tissue. This work will enable more accurate lipid raft analysis with respect to glycosphingolipid and membrane protein composition and lead to improved resolution of lipid–protein interactions within biological membranes.
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Affiliation(s)
- Kristina Mlinac-Jerkovic
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Zagreb, Croatia.,Department of Chemistry and Biochemistry, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Katarina Ilic
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Milorad Zjalić
- Department of Medical Biology and Genetics, Faculty of Medicine, University of Osijek, Osijek, Croatia
| | - Dario Mandić
- Clinical Institute of Laboratory Diagnostics, Osijek University Hospital, Osijek, Croatia.,Department of Medical Chemistry, Biochemistry and Clinical Chemistry, Faculty of Medicine, University of Osijek, Osijek, Croatia
| | - Željko Debeljak
- Clinical Institute of Laboratory Diagnostics, Osijek University Hospital, Osijek, Croatia.,Department of Pharmacology, Faculty of Medicine, University of Osijek, Osijek, Croatia
| | - Marta Balog
- Department of Medical Biology and Genetics, Faculty of Medicine, University of Osijek, Osijek, Croatia
| | - Vladimir Damjanović
- Department of Chemistry and Biochemistry, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Nikolina Maček Hrvat
- Biochemistry and Organic Analytical Chemistry Unit, Institute for Medical Research and Occupational Health, Zagreb, Croatia
| | - Nikola Habek
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Svjetlana Kalanj-Bognar
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Zagreb, Croatia.,Department of Chemistry and Biochemistry, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Ronald L Schnaar
- Departments of Pharmacology and Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Marija Heffer
- Department of Medical Biology and Genetics, Faculty of Medicine, University of Osijek, Osijek, Croatia
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20
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Lin X, Brunk MGK, Yuanxiang P, Curran AW, Zhang E, Stöber F, Goldschmidt J, Gundelfinger ED, Vollmer M, Happel MFK, Herrera-Molina R, Montag D. Neuroplastin expression is essential for hearing and hair cell PMCA expression. Brain Struct Funct 2021; 226:1533-1551. [PMID: 33844052 PMCID: PMC8096745 DOI: 10.1007/s00429-021-02269-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 03/27/2021] [Indexed: 12/25/2022]
Abstract
Hearing deficits impact on the communication with the external world and severely compromise perception of the surrounding. Deafness can be caused by particular mutations in the neuroplastin (Nptn) gene, which encodes a transmembrane recognition molecule of the immunoglobulin (Ig) superfamily and plasma membrane Calcium ATPase (PMCA) accessory subunit. This study investigates whether the complete absence of neuroplastin or the loss of neuroplastin in the adult after normal development lead to hearing impairment in mice analyzed by behavioral, electrophysiological, and in vivo imaging measurements. Auditory brainstem recordings from adult neuroplastin-deficient mice (Nptn-/-) show that these mice are deaf. With age, hair cells and spiral ganglion cells degenerate in Nptn-/- mice. Adult Nptn-/- mice fail to behaviorally respond to white noise and show reduced baseline blood flow in the auditory cortex (AC) as revealed by single-photon emission computed tomography (SPECT). In adult Nptn-/- mice, tone-evoked cortical activity was not detectable within the primary auditory field (A1) of the AC, although we observed non-persistent tone-like evoked activities in electrophysiological recordings of some young Nptn-/- mice. Conditional ablation of neuroplastin in Nptnlox/loxEmx1Cre mice reveals that behavioral responses to simple tones or white noise do not require neuroplastin expression by central glutamatergic neurons. Loss of neuroplastin from hair cells in adult NptnΔlox/loxPrCreERT mice after normal development is correlated with increased hearing thresholds and only high prepulse intensities result in effective prepulse inhibition (PPI) of the startle response. Furthermore, we show that neuroplastin is required for the expression of PMCA 2 in outer hair cells. This suggests that altered Ca2+ homeostasis underlies the observed hearing impairments and leads to hair cell degeneration. Our results underline the importance of neuroplastin for the development and the maintenance of the auditory system.
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Affiliation(s)
- Xiao Lin
- Neurogenetics Laboratory, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
- Department Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
| | - Michael G K Brunk
- Department System Physiology and Learning, AG CortXplorer, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
| | - Pingan Yuanxiang
- Research Group Neuroplasticity, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
| | - Andrew W Curran
- Department System Physiology and Learning, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
| | - Enqi Zhang
- Institute of Medical Psychology, Otto-Von-Guericke University Magdeburg, University Hospital, Leipziger Str. 44, 39120, Magdeburg, Germany
| | - Franziska Stöber
- Department System Physiology and Learning, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
| | - Jürgen Goldschmidt
- Department System Physiology and Learning, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
- Center for Behavioral Brain Sciences (CBBS), 39106, Magdeburg, Germany
| | - Eckart D Gundelfinger
- Department Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
- Medical Faculty, Molecular Neuroscience, Otto-Von-Guericke University Magdeburg, University Hospital, Leipziger Str. 44, 39120, Magdeburg, Germany
- Center for Behavioral Brain Sciences (CBBS), 39106, Magdeburg, Germany
| | - Maike Vollmer
- Department System Physiology and Learning, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
- Department of Otolaryngology-Head and Neck Surgery, Otto-Von-Guericke University Magdeburg, University Hospital, Leipziger Str. 44, 39120, Magdeburg, Germany
| | - Max F K Happel
- Department System Physiology and Learning, AG CortXplorer, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
- Center for Behavioral Brain Sciences (CBBS), 39106, Magdeburg, Germany
| | - Rodrigo Herrera-Molina
- Department Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany
- Centro Integrativo de Biología Y Química Aplicada, Universidad Bernardo O'Higgins, 8307993, Santiago, Chile
- Center for Behavioral Brain Sciences (CBBS), 39106, Magdeburg, Germany
| | - Dirk Montag
- Neurogenetics Laboratory, Leibniz Institute for Neurobiology, Brenneckestr. 6, 39118, Magdeburg, Germany.
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21
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Jiang CH, Wei M, Zhang C, Shi YS. The amino-terminal domain of GluA1 mediates LTP maintenance via interaction with neuroplastin-65. Proc Natl Acad Sci U S A 2021; 118:e2019194118. [PMID: 33627404 PMCID: PMC7936340 DOI: 10.1073/pnas.2019194118] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Long-term potentiation (LTP) has long been considered as an important cellular mechanism for learning and memory. LTP expression involves NMDA receptor-dependent synaptic insertion of AMPA receptors (AMPARs). However, how AMPARs are recruited and anchored at the postsynaptic membrane during LTP remains largely unknown. In this study, using CRISPR/Cas9 to delete the endogenous AMPARs and replace them with the mutant forms in single neurons, we have found that the amino-terminal domain (ATD) of GluA1 is required for LTP maintenance. Moreover, we show that GluA1 ATD directly interacts with the cell adhesion molecule neuroplastin-65 (Np65). Neurons lacking Np65 exhibit severely impaired LTP maintenance, and Np65 deletion prevents GluA1 from rescuing LTP in AMPARs-deleted neurons. Thus, our study reveals an essential role for GluA1/Np65 binding in anchoring AMPARs at the postsynaptic membrane during LTP.
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Affiliation(s)
- Chao-Hua Jiang
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Neurology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing University, 210032 Nanjing, China
- Ministry of Education Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing University, 210032 Nanjing, China
| | - Mengping Wei
- School of Basic Medical Sciences, Beijing Key Laboratory of Neural Regeneration and Repair, Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing 100069, China
| | - Chen Zhang
- School of Basic Medical Sciences, Beijing Key Laboratory of Neural Regeneration and Repair, Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing 100069, China;
| | - Yun Stone Shi
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Neurology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing University, 210032 Nanjing, China;
- Ministry of Education Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing University, 210032 Nanjing, China
- Institute for Brain Sciences, Nanjing University, 210032 Nanjing, China
- Chemistry and Biomedicine Innovation Center, Nanjing University, 210032 Nanjing, China
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22
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Vemula SK, Malci A, Junge L, Lehmann AC, Rama R, Hradsky J, Matute RA, Weber A, Prigge M, Naumann M, Kreutz MR, Seidenbecher CI, Gundelfinger ED, Herrera-Molina R. The Interaction of TRAF6 With Neuroplastin Promotes Spinogenesis During Early Neuronal Development. Front Cell Dev Biol 2020; 8:579513. [PMID: 33363141 PMCID: PMC7755605 DOI: 10.3389/fcell.2020.579513] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 11/11/2020] [Indexed: 11/22/2022] Open
Abstract
Correct brain wiring depends on reliable synapse formation. Nevertheless, signaling codes promoting synaptogenesis are not fully understood. Here, we report a spinogenic mechanism that operates during neuronal development and is based on the interaction of tumor necrosis factor receptor-associated factor 6 (TRAF6) with the synaptic cell adhesion molecule neuroplastin. The interaction between these proteins was predicted in silico and verified by co-immunoprecipitation in extracts from rat brain and co-transfected HEK cells. Binding assays show physical interaction between neuroplastin’s C-terminus and the TRAF-C domain of TRAF6 with a Kd value of 88 μM. As the two proteins co-localize in primordial dendritic protrusions, we used young cultures of rat and mouse as well as neuroplastin-deficient mouse neurons and showed with mutagenesis, knock-down, and pharmacological blockade that TRAF6 is required by neuroplastin to promote early spinogenesis during in vitro days 6-9, but not later. Time-framed TRAF6 blockade during days 6–9 reduced mEPSC amplitude, number of postsynaptic sites, synapse density and neuronal activity as neurons mature. Our data unravel a new molecular liaison that may emerge during a specific window of the neuronal development to determine excitatory synapse density in the rodent brain.
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Affiliation(s)
- Sampath Kumar Vemula
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Ayse Malci
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Lennart Junge
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Anne-Christin Lehmann
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Ramya Rama
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Johannes Hradsky
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Ricardo A Matute
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, United States.,Centro Integrativo de Biología y Química Aplicada, Universidad Bernardo O'Higgins, Santiago, Chile
| | - André Weber
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Matthias Prigge
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Michael Naumann
- Institute of Experimental Internal Medicine, Medical Faculty, Otto von Guericke University, Magdeburg, Germany
| | - Michael R Kreutz
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany.,Leibniz Group 'Dendritic Organelles and Synaptic Function', Center for Molecular Neurobiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Constanze I Seidenbecher
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany.,Center for Behavioral Brain Sciences, Magdeburg, Germany
| | - Eckart D Gundelfinger
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany.,Center for Behavioral Brain Sciences, Magdeburg, Germany.,Medical Faculty, Otto von Guericke University, Magdeburg, Germany
| | - Rodrigo Herrera-Molina
- Laboratory of Synaptic Signaling, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany.,Centro Integrativo de Biología y Química Aplicada, Universidad Bernardo O'Higgins, Santiago, Chile.,Center for Behavioral Brain Sciences, Magdeburg, Germany
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23
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Polsek D, Cash D, Veronese M, Ilic K, Wood TC, Milosevic M, Kalanj-Bognar S, Morrell MJ, Williams SCR, Gajovic S, Leschziner GD, Mitrecic D, Rosenzweig I. The innate immune toll-like-receptor-2 modulates the depressogenic and anorexiolytic neuroinflammatory response in obstructive sleep apnoea. Sci Rep 2020; 10:11475. [PMID: 32651433 PMCID: PMC7351955 DOI: 10.1038/s41598-020-68299-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 06/16/2020] [Indexed: 12/19/2022] Open
Abstract
The increased awareness of obstructive sleep apnoea’s (OSA) links to Alzheimer’s disease and major psychiatric disorders has recently directed an intensified search for their potential shared mechanisms. We hypothesised that neuroinflammation and the microglial TLR2-system may act as a core process at the intersection of their pathophysiology. Moreover, we postulated that inflammatory-response might underlie development of key behavioural and neurostructural changes in OSA. Henceforth, we set out to investigate effects of 3 weeks’ exposure to chronic intermittent hypoxia in mice with or without functional TRL2 (TLR2+/+, C57BL/6-Tyrc-Brd-Tg(Tlr2-luc/gfp)Kri/Gaj;TLR2−/−,C57BL/6-Tlr2tm1Kir). By utilising multimodal imaging in this established model of OSA, a discernible neuroinflammatory response was demonstrated for the first time. The septal nuclei and forebrain were shown as the initial key seed-sites of the inflammatory cascade that led to wider structural changes in the associated neurocircuitry. Finally, the modulatory role for the functional TLR2-system was suggested in aetiology of depressive, anxious and anorexiolytic symptoms in OSA.
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Affiliation(s)
- Dora Polsek
- Sleep and Brain Plasticity Centre, Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience (IoPPN), King's College London (KCL), De Crespigny Park, Box 089, London, SE5 8AF, UK.,University of Zagreb School of Medicine, Croatian Institute for Brain Research, Zagreb, Croatia
| | - Diana Cash
- Sleep and Brain Plasticity Centre, Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience (IoPPN), King's College London (KCL), De Crespigny Park, Box 089, London, SE5 8AF, UK.,BRAIN, Department of Neuroimaging, KCL, London, UK
| | | | - Katarina Ilic
- University of Zagreb School of Medicine, Croatian Institute for Brain Research, Zagreb, Croatia
| | | | - Milan Milosevic
- School of Public Health, University of Zagreb School of Medicine, Zagreb, Croatia
| | - Svjetlana Kalanj-Bognar
- University of Zagreb School of Medicine, Croatian Institute for Brain Research, Zagreb, Croatia
| | - Mary J Morrell
- The National Heart and Lung Institute, Imperial College London, London, UK
| | | | - Srecko Gajovic
- University of Zagreb School of Medicine, Croatian Institute for Brain Research, Zagreb, Croatia
| | - Guy D Leschziner
- Sleep and Brain Plasticity Centre, Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience (IoPPN), King's College London (KCL), De Crespigny Park, Box 089, London, SE5 8AF, UK.,Department of Neurology, Guy's and St Thomas' Hospital (GSTT) and Clinical Neurosciences, KCL, London, UK.,Sleep Disorders Centre, GSTT, London, UK
| | - Dinko Mitrecic
- University of Zagreb School of Medicine, Croatian Institute for Brain Research, Zagreb, Croatia
| | - Ivana Rosenzweig
- Sleep and Brain Plasticity Centre, Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience (IoPPN), King's College London (KCL), De Crespigny Park, Box 089, London, SE5 8AF, UK. .,Sleep Disorders Centre, GSTT, London, UK.
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24
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Tomonobu N, Kinoshita R, Sakaguchi M. S100 Soil Sensor Receptors and Molecular Targeting Therapy Against Them in Cancer Metastasis. Transl Oncol 2020; 13:100753. [PMID: 32193075 PMCID: PMC7078545 DOI: 10.1016/j.tranon.2020.100753] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 02/25/2020] [Accepted: 02/27/2020] [Indexed: 12/12/2022] Open
Abstract
The molecular mechanisms underlying the ‘seed and soil’ theory are unknown. S100A8/A9 (a heterodimer complex of S100A8 and S100A9 proteins that exhibits a ‘soil signal’) is a ligand for Toll-like receptor 4, causing distant melanoma cells to approach the lung as a ‘seeding’ site. Unknown soil sensors for S100A8/A9 may exist, e.g., extracellular matrix metalloproteinase inducer, neuroplastin, activated leukocyte cell adhesion molecule, and melanoma cell adhesion molecule. We call these receptor proteins ‘novel S100 soil sensor receptors (novel SSSRs).’ Here we review and summarize a crucial role of the S100A8/A9-novel SSSRs' axis in cancer metastasis. The binding of S100A8/A9 to individual SSSRs is important in cancer metastasis via upregulations of the epithelial-mesenchymal transition, cellular motility, and cancer cell invasiveness, plus the formation of an inflammatory immune suppressive environment in metastatic organ(s). These metastatic cellular events are caused by the SSSR-featured signal transductions we identified that provide cancer cells a driving force for metastasis. To deprive cancer cells of these metastatic forces, we developed novel biologics that prevent the interaction of S100A8/A9 with SSSRs, followed by the efficient suppression of S100A8/A9-mediated lung-tropic metastasis in vivo.
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Affiliation(s)
- Nahoko Tomonobu
- Department of Cell Biology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama-shi, Okayama 700-8558, Japan.
| | - Rie Kinoshita
- Department of Cell Biology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama-shi, Okayama 700-8558, Japan.
| | - Masakiyo Sakaguchi
- Department of Cell Biology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama-shi, Okayama 700-8558, Japan.
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25
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Li H, Liu Y, Gao X, Liu L, Amuti S, Wu D, Jiang F, Huang L, Wang G, Zeng J, Ma B, Yuan Q. Neuroplastin 65 modulates anxiety- and depression-like behavior likely through adult hippocampal neurogenesis and central 5-HT activity. FEBS J 2019; 286:3401-3415. [PMID: 31034748 DOI: 10.1111/febs.14865] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 03/07/2019] [Accepted: 04/25/2019] [Indexed: 01/02/2023]
Abstract
Neuroplastin 65 (Np65) is a brain-specific cell adhesion molecule that is highly expressed in the hippocampus, amygdala, and cortex, regions of the brain that are associated with memory and emotions. However, the role of Np65 in regulation of emotional behavior is still unclear. In the present study, we show that Np65 knock-out (Np65 KO) mice display enhanced anxiety-like behavior, a reduction in some aspects of depressive-like behaviors, and increased sociability and memory. Biochemical investigations revealed that Np65 KO mice show increased adult-born neurons and proliferation in the hippocampus. In addition, the level of 5-hydroxytryptamine (5-HT) in the hippocampus was reduced. The expression of tryptophan hydroxylase 2 in the brainstem and the expression of the 5-HT3A receptor were also decreased. Electrophysiological recordings confirmed an impaired maintenance of long-term potentiation in the hippocampus of Np65 KO mice. Together, our findings uncover a role for Np65 in regulating anxiety- and depressive-like behaviors and suggest that Np65 may be essential for the maintenance of emotional stability, indicating that it might be an attractive potential target for treatment of psychiatric disorders.
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Affiliation(s)
- Huanhuan Li
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yutong Liu
- Department of Radiology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Xiaoqing Gao
- Department of Anatomy and Neurobiology, Southwest Medical University, Luzhou, China
| | - Lifen Liu
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Siyiti Amuti
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Dandan Wu
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Fen Jiang
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Liang Huang
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Geying Wang
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jiujiang Zeng
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Bin Ma
- Department of Molecular and Biomedical Sciences, School of Veterinary and Life Sciences, Murdoch University, Perth, WA, Australia
| | - Qionglan Yuan
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
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26
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Ilic K, Auer B, Mlinac-Jerkovic K, Herrera-Molina R. Neuronal Signaling by Thy-1 in Nanodomains With Specific Ganglioside Composition: Shall We Open the Door to a New Complexity? Front Cell Dev Biol 2019; 7:27. [PMID: 30899760 PMCID: PMC6416198 DOI: 10.3389/fcell.2019.00027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 02/15/2019] [Indexed: 01/06/2023] Open
Abstract
Thy-1 is a small membrane glycoprotein and member of the immunoglobulin superfamily of cell adhesion molecules. It is abundantly expressed in many cell types including neurons and is anchored to the outer membrane leaflet via a glycosyl phosphatidylinositol tail. Thy-1 displays a number of interesting properties such as fast lateral diffusion, which allows it to get in and out of membrane nanodomains with different lipid composition. Thy-1 displays a broad expression in different cell types and plays confirmed roles in cell development, adhesion and differentiation. Here, we explored the functions of Thy-1 in neuronal signaling, initiated by extracellular binding of αVβ3 integrin, may strongly dependent on the lipid content of the cell membrane. Also, we assort literature suggesting the association of Thy-1 with specific components of lipid rafts such as sialic acid containing glycosphingolipids, called gangliosides. Furthermore, we argue that Thy-1 positioning in nanodomains may be influenced by gangliosides. We propose that the traditional conception of Thy-1 localization in rafts should be reconsidered and evaluated in detail based on the potential diversity of neuronal nanodomains.
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Affiliation(s)
- Katarina Ilic
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Benedikt Auer
- Laboratory of Neuronal and Synaptic Signals, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany
| | - Kristina Mlinac-Jerkovic
- Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Rodrigo Herrera-Molina
- Laboratory of Neuronal and Synaptic Signals, Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg, Germany.,Centro Integrativo de Biología y Química Aplicada, Universidad Bernardo O'Higgins, Santiago, Chile
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27
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Heine M, Heck J, Ciuraszkiewicz A, Bikbaev A. Dynamic compartmentalization of calcium channel signalling in neurons. Neuropharmacology 2019; 169:107556. [PMID: 30851307 DOI: 10.1016/j.neuropharm.2019.02.038] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 02/16/2019] [Accepted: 02/27/2019] [Indexed: 12/13/2022]
Abstract
Calcium fluxes through the neuronal membrane are strictly limited in time due to biophysical properties of voltage-gated and ligand-activated ion channels and receptors. Being embedded into the crowded dynamic environment of biological membranes, Ca2+-permeable receptors and channels undergo perpetual spatial rearrangement, which enables their temporary association and formation of transient signalling complexes. Thus, efficient calcium-mediated signal transduction requires mechanisms to support very precise spatiotemporal alignment of the calcium source and Ca2+-binding lipids and proteins in a highly dynamic environment. The mobility of calcium channels and calcium-sensing proteins themselves can be considered as a physiologically meaningful variable that affects calcium-mediated signalling in neurons. In this review, we will focus on voltage-gated calcium channels (VGCCs) and activity-induced relocation of stromal interaction molecules (STIMs) in the endoplasmic reticulum (ER) to show that particularly in time ranges between milliseconds to minutes, dynamic rearrangement of calcium conducting channels and sensor molecules is of physiological relevance. This article is part of the special issue entitled 'Mobility and trafficking of neuronal membrane proteins'.
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Affiliation(s)
- Martin Heine
- RG Molecular Physiology, Leibniz Institute for Neurobiology, Magdeburg, 39118, Germany; Center for Behavioral Brain Sciences, Otto-von-Guericke University, Magdeburg, 39106, Germany; RG Functional Neurobiology, Institute for Development Biology and Neurobiology, Johannes Gutenberg University Mainz, Germany.
| | - Jennifer Heck
- RG Molecular Physiology, Leibniz Institute for Neurobiology, Magdeburg, 39118, Germany
| | - Anna Ciuraszkiewicz
- RG Molecular Physiology, Leibniz Institute for Neurobiology, Magdeburg, 39118, Germany; Center for Behavioral Brain Sciences, Otto-von-Guericke University, Magdeburg, 39106, Germany
| | - Arthur Bikbaev
- RG Molecular Physiology, Leibniz Institute for Neurobiology, Magdeburg, 39118, Germany
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28
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Krey JF, Barr-Gillespie PG. Molecular Composition of Vestibular Hair Bundles. Cold Spring Harb Perspect Med 2019; 9:cshperspect.a033209. [PMID: 29844221 DOI: 10.1101/cshperspect.a033209] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The vertebrate hair bundle, responsible for transduction of mechanical signals into receptor potentials in sensory hair cells, is an evolutionary masterpiece. Composed of actin-filled stereocilia of precisely regulated length, width, and number, the structure of the hair bundle is optimized for sensing auditory and vestibular stimuli. Recent developments in identifying the lipids and proteins constituting the hair bundle, obtained through genetics, biochemistry, and imaging, now permit a description of the consensus composition of vestibular bundles of mouse, rat, and chick.
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Affiliation(s)
- Jocelyn F Krey
- Oregon Hearing Research Center and Vollum Institute, Oregon Health & Science University, Portland, Oregon 97239
| | - Peter G Barr-Gillespie
- Oregon Hearing Research Center and Vollum Institute, Oregon Health & Science University, Portland, Oregon 97239
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29
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Ilic K, Mlinac-Jerkovic K, Jovanov-Milosevic N, Simic G, Habek N, Bogdanovic N, Kalanj-Bognar S. Hippocampal expression of cell-adhesion glycoprotein neuroplastin is altered in Alzheimer's disease. J Cell Mol Med 2018; 23:1602-1607. [PMID: 30488668 PMCID: PMC6349345 DOI: 10.1111/jcmm.13998] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 10/13/2018] [Indexed: 11/26/2022] Open
Abstract
Cell‐adhesion glycoprotein neuroplastin (Np) is involved in the regulation of synaptic plasticity and balancing hippocampal excitatory/inhibitory inputs which aids in the process of associative memory formation and learning. Our recent findings show that neuroplastin expression in the adult human hippocampus is specifically associated with major hippocampal excitatory pathways and is related to neuronal calcium regulation. Here, we investigated the hippocampal expression of brain‐specific neuroplastin isoform (Np65), its relationship with amyloid and tau pathology in Alzheimer's disease (AD), and potential involvement of neuroplastin in tissue response during the disease progression. Np65 expression and localization was analysed in six human hippocampi with confirmed AD neuropathology, and six age‐/gender‐matched control hippocampi by imunohistochemistry. In AD cases with shorter disease duration, the Np65 immunoreactivity was significantly increased in the dentate gyrus (DG), Cornu Ammonis 2/3 (CA2/3), and subiculum, with the highest level of Np expression being located on the dendrites of granule cells and subicular pyramidal neurons. Changes in the expression of neuroplastin in AD hippocampal areas seem to be related to the progression of disease. Our study suggests that cell‐adhesion protein neuroplastin is involved in tissue reorganization and is a potential molecular marker of plasticity response in the early neurodegeneration process of AD.
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Affiliation(s)
- Katarina Ilic
- School of Medicine, Croatian Institute for Brain Research, University of Zagreb, Zagreb, Croatia
| | - Kristina Mlinac-Jerkovic
- School of Medicine, Croatian Institute for Brain Research, University of Zagreb, Zagreb, Croatia
| | - Natasa Jovanov-Milosevic
- School of Medicine, Croatian Institute for Brain Research, University of Zagreb, Zagreb, Croatia
| | - Goran Simic
- School of Medicine, Croatian Institute for Brain Research, University of Zagreb, Zagreb, Croatia
| | - Nikola Habek
- School of Medicine, Croatian Institute for Brain Research, University of Zagreb, Zagreb, Croatia
| | - Nenad Bogdanovic
- Division of Clinical Geriatrics, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
| | - Svjetlana Kalanj-Bognar
- School of Medicine, Croatian Institute for Brain Research, University of Zagreb, Zagreb, Croatia
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30
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Gong D, Chi X, Ren K, Huang G, Zhou G, Yan N, Lei J, Zhou Q. Structure of the human plasma membrane Ca 2+-ATPase 1 in complex with its obligatory subunit neuroplastin. Nat Commun 2018; 9:3623. [PMID: 30190470 PMCID: PMC6127144 DOI: 10.1038/s41467-018-06075-7] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 08/08/2018] [Indexed: 11/25/2022] Open
Abstract
Plasma membrane Ca2+-ATPases (PMCAs) are key regulators of global Ca2+ homeostasis and local intracellular Ca2+ dynamics. Recently, Neuroplastin (NPTN) and basigin were identified as previously unrecognized obligatory subunits of PMCAs that dramatically increase the efficiency of PMCA-mediated Ca2+ clearance. Here, we report the cryo-EM structure of human PMCA1 (hPMCA1) in complex with NPTN at a resolution of 4.1 Å for the overall structure and 3.9 Å for the transmembrane domain. The single transmembrane helix of NPTN interacts with the TM8-9-linker and TM10 of hPMCA1. The subunits are required for the hPMCA1 functional activity. The NPTN-bound hPMCA1 closely resembles the E1-Mg2+ structure of endo(sarco)plasmic reticulum Ca2+ ATPase and the Ca2+ site is exposed through a large open cytoplasmic pathway. This structure provides insight into how the subunits bind to the PMCAs and serves as an important basis for understanding the functional mechanisms of this essential calcium pump family. The plasma membrane Ca2+ ATPase (PMCA) is essential for maintaining Ca2+ homeostasis in eukaryotic cells, and neuroplastin (NPTN) was recently identified as an obligatory subunit of PMCA. Here the authors present the cryo-EM structure of NPTN bound to human PMCA1, which reveals that the NPTN transmembrane (TM) helix interacts with TM10 and the TM8-9-linker of PMCA1.
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Affiliation(s)
- Deshun Gong
- Beijing Advanced Innovation Center for Structural Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China.
| | - Ximin Chi
- Beijing Advanced Innovation Center for Structural Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Kang Ren
- Beijing Advanced Innovation Center for Structural Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Gaoxingyu Huang
- Beijing Advanced Innovation Center for Structural Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Gewei Zhou
- Beijing Advanced Innovation Center for Structural Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Nieng Yan
- Beijing Advanced Innovation Center for Structural Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China.,Department of Molecular Biology, Princeton University, Princeton, NJ, 08544, USA
| | - Jianlin Lei
- Technology Center for Protein Sciences, Ministry of Education Key Laboratory of Protein Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Qiang Zhou
- Beijing Advanced Innovation Center for Structural Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Medicine, Tsinghua University, Beijing, 100084, China.
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31
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Choy MK, Javierre BM, Williams SG, Baross SL, Liu Y, Wingett SW, Akbarov A, Wallace C, Freire-Pritchett P, Rugg-Gunn PJ, Spivakov M, Fraser P, Keavney BD. Promoter interactome of human embryonic stem cell-derived cardiomyocytes connects GWAS regions to cardiac gene networks. Nat Commun 2018; 9:2526. [PMID: 29955040 PMCID: PMC6023870 DOI: 10.1038/s41467-018-04931-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 05/29/2018] [Indexed: 12/21/2022] Open
Abstract
Long-range chromosomal interactions bring distal regulatory elements and promoters together to regulate gene expression in biological processes. By performing promoter capture Hi-C (PCHi-C) on human embryonic stem cell-derived cardiomyocytes (hESC-CMs), we show that such promoter interactions are a key mechanism by which enhancers contact their target genes after hESC-CM differentiation from hESCs. We also show that the promoter interactome of hESC-CMs is associated with expression quantitative trait loci (eQTLs) in cardiac left ventricular tissue; captures the dynamic process of genome reorganisation after hESC-CM differentiation; overlaps genome-wide association study (GWAS) regions associated with heart rate; and identifies new candidate genes in such regions. These findings indicate that regulatory elements in hESC-CMs identified by our approach control gene expression involved in ventricular conduction and rhythm of the heart. The study of promoter interactions in other hESC-derived cell types may be of utility in functional investigation of GWAS-associated regions.
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Affiliation(s)
- Mun-Kit Choy
- Division of Cardiovascular Sciences, The University of Manchester, Manchester, M13 9PT, UK.
| | - Biola M Javierre
- Nuclear Dynamics Programme, The Babraham Institute, Cambridge, CB22 3AT, UK
- Josep Carreras Leukaemia Research Institute, Campus ICO-Germans Trias I Pujol, Badalona, 08916, Barcelona, Spain
| | - Simon G Williams
- Division of Cardiovascular Sciences, The University of Manchester, Manchester, M13 9PT, UK
| | - Stephanie L Baross
- Division of Cardiovascular Sciences, The University of Manchester, Manchester, M13 9PT, UK
| | - Yingjuan Liu
- Division of Cardiovascular Sciences, The University of Manchester, Manchester, M13 9PT, UK
| | - Steven W Wingett
- Nuclear Dynamics Programme, The Babraham Institute, Cambridge, CB22 3AT, UK
| | - Artur Akbarov
- Division of Cardiovascular Sciences, The University of Manchester, Manchester, M13 9PT, UK
| | - Chris Wallace
- MRC Biostatistics Unit, University of Cambridge, Cambridge, CB2 0SR, UK
- Department of Medicine, University of Cambridge, Cambridge, CB2 0QQ, UK
| | - Paula Freire-Pritchett
- Nuclear Dynamics Programme, The Babraham Institute, Cambridge, CB22 3AT, UK
- Division of Cell Biology, Medical Research Council Laboratory of Molecular Biology, Cambridge, CB2 0QH, UK
| | - Peter J Rugg-Gunn
- Epigenetics Programme, The Babraham Institute, Cambridge, CB22 3AT, UK
| | - Mikhail Spivakov
- Nuclear Dynamics Programme, The Babraham Institute, Cambridge, CB22 3AT, UK
| | - Peter Fraser
- Nuclear Dynamics Programme, The Babraham Institute, Cambridge, CB22 3AT, UK.
- Department of Biological Science, Florida State University, Tallahassee, 32306, FL, USA.
| | - Bernard D Keavney
- Division of Cardiovascular Sciences, The University of Manchester, Manchester, M13 9PT, UK.
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32
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Schmidt N, Kollewe A, Constantin CE, Henrich S, Ritzau-Jost A, Bildl W, Saalbach A, Hallermann S, Kulik A, Fakler B, Schulte U. Neuroplastin and Basigin Are Essential Auxiliary Subunits of Plasma Membrane Ca2+-ATPases and Key Regulators of Ca2+ Clearance. Neuron 2017; 96:827-838.e9. [DOI: 10.1016/j.neuron.2017.09.038] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Revised: 07/31/2017] [Accepted: 09/22/2017] [Indexed: 12/21/2022]
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