1
|
Sánchez JC, Alemán A, Henao JF, Olaya JC, Ehrlich BE. NCS-1 protein regulates TRPA1 channel through the PI3K pathway in breast cancer and neuronal cells. J Physiol Biochem 2024; 80:451-463. [PMID: 38564162 PMCID: PMC11074019 DOI: 10.1007/s13105-024-01016-z] [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: 11/29/2023] [Accepted: 03/05/2024] [Indexed: 04/04/2024]
Abstract
The physical and functional interaction between transient receptor potential channel ankyrin 1 (TRPA1) and neuronal calcium sensor 1 (NCS-1) was assessed. NCS-1 is a calcium (Ca2+) sensor found in many tissues, primarily neurons, and TRPA1 is a Ca2+ channel involved not only in thermal and pain sensation but also in conditions such as cancer and chemotherapy-induced peripheral neuropathy, in which NCS-1 is also a regulatory component.We explored the interactions between these two proteins by employing western blot, qRT-PCR, co-immunoprecipitation, Ca2+ transient monitoring with Fura-2 spectrophotometry, and electrophysiology assays in breast cancer cells (MDA-MB-231) with different levels of NCS-1 expression and neuroblastoma cells (SH-SY5Y).Our findings showed that the expression of TRPA1 was directly correlated with NCS-1 levels at both the protein and mRNA levels. Additionally, we found a physical and functional association between these two proteins. Physically, the NCS-1 and TRPA1 co-immunoprecipitate. Functionally, NCS-1 enhanced TRPA1-dependent Ca2+ influx, current density, open probability, and conductance, where the functional effects depended on PI3K. Conclusion: NCS-1 appears to act not only as a Ca2+ sensor but also modulates TRPA1 protein expression and channel function in a direct fashion through the PI3K pathway. These results contribute to understanding how Ca2+ homeostasis is regulated and provides a mechanism underlying conditions where Ca2+ dynamics are compromised, including breast cancer. With a cellular pathway identified, targeted treatments can be developed for breast cancer and neuropathy, among other related diseases.
Collapse
Affiliation(s)
- Julio C Sánchez
- Department of Basic Sciences, Laboratory of Cell Physiology, Faculty of Health Sciences, Universidad Tecnológica de Pereira, AA 97, La Julita, 660003, Pereira, Risaralda, Colombia.
| | - Alexander Alemán
- Department of Basic Sciences, Laboratory of Cell Physiology, Faculty of Health Sciences, Universidad Tecnológica de Pereira, AA 97, La Julita, 660003, Pereira, Risaralda, Colombia
| | - Juan F Henao
- Department of Basic Sciences, Laboratory of Cell Physiology, Faculty of Health Sciences, Universidad Tecnológica de Pereira, AA 97, La Julita, 660003, Pereira, Risaralda, Colombia
| | - Juan C Olaya
- Department of Basic Sciences, Laboratory of Cell Physiology, Faculty of Health Sciences, Universidad Tecnológica de Pereira, AA 97, La Julita, 660003, Pereira, Risaralda, Colombia
| | - Barbara E Ehrlich
- Departments of Pharmacology and Cellular and Molecular Physiology, Yale University, New Haven, CT, 06520, USA
| |
Collapse
|
2
|
Lisek M, Tomczak J, Boczek T, Zylinska L. Calcium-Associated Proteins in Neuroregeneration. Biomolecules 2024; 14:183. [PMID: 38397420 PMCID: PMC10887043 DOI: 10.3390/biom14020183] [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: 12/30/2023] [Revised: 01/27/2024] [Accepted: 02/01/2024] [Indexed: 02/25/2024] Open
Abstract
The dysregulation of intracellular calcium levels is a critical factor in neurodegeneration, leading to the aberrant activation of calcium-dependent processes and, ultimately, cell death. Ca2+ signals vary in magnitude, duration, and the type of neuron affected. A moderate Ca2+ concentration can initiate certain cellular repair pathways and promote neuroregeneration. While the peripheral nervous system exhibits an intrinsic regenerative capability, the central nervous system has limited self-repair potential. There is evidence that significant variations exist in evoked calcium responses and axonal regeneration among neurons, and individual differences in regenerative capacity are apparent even within the same type of neurons. Furthermore, some studies have shown that neuronal activity could serve as a potent regulator of this process. The spatio-temporal patterns of calcium dynamics are intricately controlled by a variety of proteins, including channels, ion pumps, enzymes, and various calcium-binding proteins, each of which can exert either positive or negative effects on neural repair, depending on the cellular context. In this concise review, we focus on several calcium-associated proteins such as CaM kinase II, GAP-43, oncomodulin, caldendrin, calneuron, and NCS-1 in order to elaborate on their roles in the intrinsic mechanisms governing neuronal regeneration following traumatic damage processes.
Collapse
Affiliation(s)
| | | | | | - Ludmila Zylinska
- Department of Molecular Neurochemistry, Medical University of Lodz, 92-215 Lodz, Poland; (M.L.); (J.T.); (T.B.)
| |
Collapse
|
3
|
Alam MS, Leyva D, Michelin W, Fernandez-Lima F, Miksovska J. Distinct mechanism of Tb 3+ and Eu 3+ binding to NCS1. Phys Chem Chem Phys 2023; 25:9500-9512. [PMID: 36938969 PMCID: PMC10840756 DOI: 10.1039/d2cp05765d] [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] [Indexed: 03/02/2023]
Abstract
Lanthanides have been frequently used as biomimetic compounds for NMR and fluorescence studies of Ca2+ binding proteins due to having similar physical properties and coordination geometry to Ca2+ ions. Here we report that a member of the neuronal calcium sensor family, neuronal calcium sensor 1, complexes with two lanthanide ions Tb3+ and Eu3+. The affinity for Tb3+ is nearly 50 times higher than that for Ca2+ (Kd,Tb3+ = 0.002 ± 0.0001 μM and Kd, Ca2+ = 91 nM) whereas Eu3+ binding is notably weaker, Kd,Eu3+ = 26 ± 1 μM. Interestingly, despite having identical charge and similar ionic radii, Tb3+ and Eu3+ ions exhibit a distinct binding stoichiometry for NCS1 with one Eu3+ and two Tb3+ ions bound per NCS1 monomer, as demonstrated in fluorescence titration and mass spectrometry studies. These results suggest that the lanthanides' affinity for the individual EF hands is fine-tuned by a small variation in the ion charge density as well as EF hand binding loop amino acid sequence. As observed previously for other lanthanide:protein complexes, the emission intensity of Ln3+ is enhanced upon complexation with the protein, likely due to the displacement of water molecules by oxygen atoms from the coordinating amino acid residues. The overall shape of the Tb3+NCS1 and Eu3+NCS1 monomer shows high levels of similarity compared to the Ca2+ bound protein based on their collision cross section. However, the distinct occupation of EF hands impacts NCS1 oligomerization and affinity for the D2R peptide that mimics the NCS1 binding site on the D2R receptor. Specifically, the Tb3+NCS1 complex populates the dimer and has comparable affinity for the D2R peptide, whereas Eu3+ bound NCS1 remains in the monomeric form with a negligible affinity for the D2R peptide.
Collapse
Affiliation(s)
- Md Shofiul Alam
- Department of Chemistry and Biochemistry, Florida International University, Miami, FL 33199, USA.
| | - Dennys Leyva
- Department of Chemistry and Biochemistry, Florida International University, Miami, FL 33199, USA.
| | - Woodline Michelin
- Department of Chemistry and Biochemistry, Florida International University, Miami, FL 33199, USA.
| | - Francisco Fernandez-Lima
- Department of Chemistry and Biochemistry, Florida International University, Miami, FL 33199, USA.
- Biomolecular Sciences Institute, Florida International University, Miami, FL, USA
| | - Jaroslava Miksovska
- Department of Chemistry and Biochemistry, Florida International University, Miami, FL 33199, USA.
- Biomolecular Sciences Institute, Florida International University, Miami, FL, USA
| |
Collapse
|
4
|
Zhang W, Wang J, Li W, Liu X, Zhao Y, Yang P, Zhu M, Hu K, Li S, Dong G, Yan C, He X, Zhang X, Jing H. The expression level of Neuronal Calcium Sensor 1 can predict the prognosis of cytogenetically normal AML. THE PHARMACOGENOMICS JOURNAL 2023:10.1038/s41397-023-00301-2. [PMID: 36918700 DOI: 10.1038/s41397-023-00301-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 02/01/2023] [Accepted: 03/01/2023] [Indexed: 03/15/2023]
Abstract
Acute myeloid leukemia (AML) is malignant clonal expansion of myeloid blasts with high heterogeneity and numerous molecular biomarkers have been found to judge the prognosis in some specific classifications of AML. Furthermore, as for patients with cytogenetically normal acute myeloid leukemia (CN-AML), we need to find more new biomarkers to predict the patients' outcomes. Recently, the expression level of Neuronal Calcium Sensor 1 (NCS1) has been associated with the prognosis of breast cancer and hepatocellular carcinoma, but nothing related has been reported about hematological malignancies. Therefore, we make this study to explore the relationship between the NCS1 expression level and CN-AML. We analyzed the relation between survival and NCS1 RNA expression through 75 CN-AML patients from Cancer Genome Atlas (TCGA) database and 433 CN-AML patients (3 independent datasets) from Gene Expression Omnibus (GEO) database. Additionally, we compared the NCS1 RNA expression between 138 leukemia stem cells positive (LSCs+) samples and 89 leukemia stem cells negative (LSCs-) samples from 78 AML patients from GSE76004 dataset. In our study, CN-AML patients with high expression level of NCS1 have longer EFS or OS. In addition, the NCS1 expression level in leukemia stem cells was low (p = 0.00039). According to these findings, we concluded that the high expression of NCS1 can predict favorable prognosis in CN-AML patients. Furthermore, our work put forward that NCS1 expresses lower in LSCs+, which might be an important mechanism to explain the aggressiveness of AML.
Collapse
Affiliation(s)
- Weilong Zhang
- Department of Hematology, Lymphoma Research Center, Peking University Third Hospital, 100191, Beijing, China
| | - Jing Wang
- Department of Hematology, Lymphoma Research Center, Peking University Third Hospital, 100191, Beijing, China
| | - Wei Li
- Department of Hematology, Lymphoma Research Center, Peking University Third Hospital, 100191, Beijing, China
| | - Xiaoni Liu
- Department of Respiratory Medicine, The First Affiliated Hospital of Gannan Medical University, Ganzhou, 341000, China
| | - Yali Zhao
- General Practice Medicine, The First People's Hospital of Huzhou, Huzhou, 313000, China
| | - Ping Yang
- Department of Hematology, Lymphoma Research Center, Peking University Third Hospital, 100191, Beijing, China
| | - Mingxia Zhu
- Department of Hematology, Lymphoma Research Center, Peking University Third Hospital, 100191, Beijing, China
| | - Kai Hu
- Department of Hematology, Lymphoma Research Center, Peking University Third Hospital, 100191, Beijing, China
| | - Shaoxiang Li
- Department of Pathology, Beijing Tiantan Hospital Affiliated with Capital Medical University, 100050, Beijing, China
| | - Gehong Dong
- Department of Pathology, Beijing Tiantan Hospital Affiliated with Capital Medical University, 100050, Beijing, China
| | - Changjian Yan
- Department of Hematology, Lymphoma Research Center, Peking University Third Hospital, 100191, Beijing, China. .,Gannan Medical University, Ganzhou, 341000, China.
| | - Xue He
- Department of Pathology, Beijing Tiantan Hospital Affiliated with Capital Medical University, 100050, Beijing, China.
| | - Xiuru Zhang
- Department of Pathology, Beijing Tiantan Hospital Affiliated with Capital Medical University, 100050, Beijing, China.
| | - Hongmei Jing
- Department of Hematology, Lymphoma Research Center, Peking University Third Hospital, 100191, Beijing, China.
| |
Collapse
|
5
|
Varlamova EG, Plotnikov EY, Turovsky EA. Neuronal Calcium Sensor-1 Protects Cortical Neurons from Hyperexcitation and Ca 2+ Overload during Ischemia by Protecting the Population of GABAergic Neurons. Int J Mol Sci 2022; 23:ijms232415675. [PMID: 36555318 PMCID: PMC9778989 DOI: 10.3390/ijms232415675] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 12/07/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022] Open
Abstract
A defection of blood circulation in the brain leads to ischemia, damage, and the death of nerve cells. It is known that individual populations of GABAergic neurons are the least resistant to the damaging factors of ischemia and therefore they die first of all, which leads to impaired inhibition in neuronal networks. To date, the neuroprotective properties of a number of calcium-binding proteins (calbindin, calretinin, and parvalbumin), which are markers of GABAergic neurons, are known. Neuronal calcium sensor-1 (NCS-1) is a signaling protein that is expressed in all types of neurons and is involved in the regulation of neurotransmission. The role of NCS-1 in the protection of neurons and especially their individual populations from ischemia and hyperexcitation has not been practically studied. In this work, using the methods of fluorescence microscopy, vitality tests, immunocytochemistry, and PCR analysis, the molecular mechanisms of the protective action of NCS-1 in ischemia/reoxygenation and hyperammonemia were established. Since NCS-1 is most expressed in GABAergic neurons, the knockdown of this protein with siRNA led to the most pronounced consequences in GABAergic neurons. The knockdown of NCS-1 (NCS-1-KD) suppressed the basic expression of protective proteins without significantly reducing cell viability. However, ischemia-like conditions (oxygen-glucose deprivation, OGD) and subsequent 24-h reoxygenation led to a more massive activation of apoptosis and necrosis in neurons with NCS-1-KD, compared to control cells. The mass death of NCS-1-KD cells during OGD and hyperammonemia has been associated with the induction of a more pronounced network hyperexcitation symptom, especially in the population of GABAergic neurons, leading to a global increase in cytosolic calcium ([Ca2+]i). The symptom of hyperexcitation of neurons with NCS-1-KD correlated with a decrease in the level of expression of the calcium-binding protein-parvalbumin. This was accompanied by an increase in the expression of excitatory ionotropic glutamate receptors, N-methyl-D-aspartate and α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptors (NMDAR and AMPAR) against the background of suppression of the expression of glutamate decarboxylase (synthesis of γ-aminobutyric acid).
Collapse
Affiliation(s)
- Elena G. Varlamova
- Institute of Cell Biophysics of the Russian Academy of Sciences, Federal Research Center “Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences”, 142290 Pushchino, Russia
- Correspondence: (E.G.V.); (E.A.T.)
| | - Egor Y. Plotnikov
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Russia
- V.I. Kulakov National Medical Research Center of Obstetrics, Gynecology and Perinatology, 117997 Moscow, Russia
| | - Egor A. Turovsky
- Institute of Cell Biophysics of the Russian Academy of Sciences, Federal Research Center “Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences”, 142290 Pushchino, Russia
- Correspondence: (E.G.V.); (E.A.T.)
| |
Collapse
|
6
|
NCS1 overexpression restored mitochondrial activity and behavioral alterations in a zebrafish model of Wolfram syndrome. Mol Ther Methods Clin Dev 2022; 27:295-308. [PMID: 36320410 PMCID: PMC9594121 DOI: 10.1016/j.omtm.2022.10.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 10/04/2022] [Indexed: 11/28/2022]
Abstract
Wolfram syndrome (WS) is a rare neurodegenerative disease resulting in deafness, optic atrophy, diabetes, and neurological disorders. Currently, no treatment is available for patients. The mutated gene, WFS1, encodes an endoplasmic reticulum (ER) protein, Wolframin. We previously reported that Wolframin regulated the ER-mitochondria Ca2+ transfer and mitochondrial activity by protecting NCS1 from degradation in patients' fibroblasts. We relied on a zebrafish model of WS, the wfs1ab KO line, to analyze the functional and behavioral impact of NCS1 overexpression as a novel therapeutic strategy. The wfs1ab KO line showed an increased locomotion in the visual motor and touch-escape responses. The absence of wfs1 did not impair the cellular unfolded protein response, in basal or tunicamycin-induced ER stress conditions. In contrast, metabolic analysis showed an increase in mitochondrial respiration in wfs1ab KO larvae. Interestingly, overexpression of NCS1 using mRNA injection restored the alteration of mitochondrial respiration and hyperlocomotion. Taken together, these data validated the wfs1ab KO zebrafish line as a pertinent experimental model of WS and confirmed the therapeutic potential of NCS1. The wfs1ab KO line therefore appeared as an efficient model to identify novel therapeutic strategies, such as gene or pharmacological therapies targeting NCS1 that will correct or block WS symptoms.
Collapse
|
7
|
Alam MS, Azam S, Pham K, Leyva D, Fouque KJD, Fernandez-Lima F, Miksovska J. Nanomolar affinity of EF-hands in neuronal calcium sensor 1 for bivalent cations Pb2+, Mn2+ and Hg2. Metallomics 2022; 14:6601456. [PMID: 35657675 DOI: 10.1093/mtomcs/mfac039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 05/31/2022] [Indexed: 11/12/2022]
Abstract
Abiogenic metals Pb and Hg are highly toxic since chronic and/or acute exposure often leads to severe neuropathologies. Mn2+ is an essential metal ion but in excess can impair neuronal function. In this study, we address in vitro the interactions between neuronal calcium sensor 1 (NCS1) and divalent cations. Results showed that non-physiological ions (Pb2+, Mn2+ and Hg2+) bind to EF-hands in NCS1 with nanomolar affinity and lower equilibrium dissociation constant than the physiological Ca2+ ion. (Kd,Pb2+ = 7.0±1.0 nM; Kd,Mn2+ = 34.0±6.0 nM; Kd, Hg2+ = 0.5±0.1 nM and 27.0±13.0 nM and Kd,Ca2+ = 96.0±48.0 nM). Native ultra-high resolution mass spectrometry (FT-ICR MS) and trapped ion mobility spectrometry - mass spectrometry (nESI-TIMS-MS) studies provided the NCS1-metal complex compositions - up to four Ca2+ or Mn2+ ions and three Pb2+ ions (M⋅Pb1-3Ca1-3, M⋅Mn1-4Ca1-2, and M⋅Ca1-4) were observed in complex - and similarity across the mobility profiles suggests that the overall native structure is preserved regardless of the number and type of cations. However, the non-physiological metal ions (Pb2+, Mn2+, and Hg2+) binding to NCS1 leads to more efficient quenching of Trp emission and a decrease in W30 and W103 solvent exposure compared to the apo and Ca2+ bound form, although the secondary structural rearrangement and exposure of hydrophobic sites are analogous to those for Ca2+ bound protein. Only Pb2+ and Hg2+ binding to EF-hands leads to the NCS1 dimerization whereas Mn2+ bound NCS1 remains in the monomeric form, suggesting that other factors in addition to metal ion coordination, are required for protein dimerization.
Collapse
Affiliation(s)
- Md Shofiul Alam
- Department of Chemistry and Biochemistry, Florida International University, Miami FL 33199USA
| | - Samiol Azam
- Department of Chemistry and Biochemistry, Florida International University, Miami FL 33199USA
| | - Khoa Pham
- Department of Chemistry and Biochemistry, Florida International University, Miami FL 33199USA
| | - Dennys Leyva
- Department of Chemistry and Biochemistry, Florida International University, Miami FL 33199USA
| | - Kevin Jeanne Dit Fouque
- Department of Chemistry and Biochemistry, Florida International University, Miami FL 33199USA.,Biomolecular Sciences Institute, Florida International University, Miami, 33199USA
| | - Francisco Fernandez-Lima
- Department of Chemistry and Biochemistry, Florida International University, Miami FL 33199USA.,Biomolecular Sciences Institute, Florida International University, Miami, 33199USA
| | - Jaroslava Miksovska
- Department of Chemistry and Biochemistry, Florida International University, Miami FL 33199USA.,Biomolecular Sciences Institute, Florida International University, Miami, 33199USA
| |
Collapse
|
8
|
Khaitin A. Calcium in Neuronal and Glial Response to Axotomy. Int J Mol Sci 2021; 22:ijms222413344. [PMID: 34948141 PMCID: PMC8706492 DOI: 10.3390/ijms222413344] [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: 11/12/2021] [Revised: 12/09/2021] [Accepted: 12/10/2021] [Indexed: 11/16/2022] Open
Abstract
Neurotrauma assumes an instant or delayed disconnection of axons (axotomy), which affects not only neurons, but surrounding glia as well. Not only mechanically injured glia near the site of disconnection, especially transection, is subjected to the damage, but also glia that is remote from the lesion site. Glial cells, which surround the neuronal body, in turn, support neuron survival, so there is a mutual protection between neuron and glia. Calcium signaling is a central mediator of all post-axotomy events, both in neuron and glia, playing a critical role in their survival/regeneration or death/degeneration. The involvement of calcium in post-axotomy survival of the remote, mechanically intact glia is poorly studied. The purpose of this review is to sum up the calcium-involving mechanisms in responses of neurons and glial cells to axotomy to show their importance and to give some suggestions for future research of remote glia in this context.
Collapse
Affiliation(s)
- Andrey Khaitin
- Academy of Biology and Biotechnology, Southern Federal University, 344090 Rostov-on-Don, Russia
| |
Collapse
|
9
|
Crouzier L, Richard EM, Sourbron J, Lagae L, Maurice T, Delprat B. Use of Zebrafish Models to Boost Research in Rare Genetic Diseases. Int J Mol Sci 2021; 22:13356. [PMID: 34948153 PMCID: PMC8706563 DOI: 10.3390/ijms222413356] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 12/09/2021] [Accepted: 12/10/2021] [Indexed: 02/06/2023] Open
Abstract
Rare genetic diseases are a group of pathologies with often unmet clinical needs. Even if rare by a single genetic disease (from 1/2000 to 1/more than 1,000,000), the total number of patients concerned account for approximatively 400 million peoples worldwide. Finding treatments remains challenging due to the complexity of these diseases, the small number of patients and the challenge in conducting clinical trials. Therefore, innovative preclinical research strategies are required. The zebrafish has emerged as a powerful animal model for investigating rare diseases. Zebrafish combines conserved vertebrate characteristics with high rate of breeding, limited housing requirements and low costs. More than 84% of human genes responsible for diseases present an orthologue, suggesting that the majority of genetic diseases could be modelized in zebrafish. In this review, we emphasize the unique advantages of zebrafish models over other in vivo models, particularly underlining the high throughput phenotypic capacity for therapeutic screening. We briefly introduce how the generation of zebrafish transgenic lines by gene-modulating technologies can be used to model rare genetic diseases. Then, we describe how zebrafish could be phenotyped using state-of-the-art technologies. Two prototypic examples of rare diseases illustrate how zebrafish models could play a critical role in deciphering the underlying mechanisms of rare genetic diseases and their use to identify innovative therapeutic solutions.
Collapse
Affiliation(s)
- Lucie Crouzier
- MMDN, University of Montpellier, EPHE, INSERM, 34095 Montpellier, France; (L.C.); (E.M.R.); (T.M.)
| | - Elodie M. Richard
- MMDN, University of Montpellier, EPHE, INSERM, 34095 Montpellier, France; (L.C.); (E.M.R.); (T.M.)
| | - Jo Sourbron
- Department of Development and Regeneration, Section Pediatric Neurology, University Hospital KU Leuven, 3000 Leuven, Belgium; (J.S.); (L.L.)
| | - Lieven Lagae
- Department of Development and Regeneration, Section Pediatric Neurology, University Hospital KU Leuven, 3000 Leuven, Belgium; (J.S.); (L.L.)
| | - Tangui Maurice
- MMDN, University of Montpellier, EPHE, INSERM, 34095 Montpellier, France; (L.C.); (E.M.R.); (T.M.)
| | - Benjamin Delprat
- MMDN, University of Montpellier, EPHE, INSERM, 34095 Montpellier, France; (L.C.); (E.M.R.); (T.M.)
| |
Collapse
|
10
|
Disulfide Dimerization of Neuronal Calcium Sensor-1: Implications for Zinc and Redox Signaling. Int J Mol Sci 2021; 22:ijms222212602. [PMID: 34830487 PMCID: PMC8623652 DOI: 10.3390/ijms222212602] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 11/16/2021] [Accepted: 11/18/2021] [Indexed: 01/12/2023] Open
Abstract
Neuronal calcium sensor-1 (NCS-1) is a four-EF-hand ubiquitous signaling protein modulating neuronal function and survival, which participates in neurodegeneration and carcinogenesis. NCS-1 recognizes specific sites on cellular membranes and regulates numerous targets, including G-protein coupled receptors and their kinases (GRKs). Here, with the use of cellular models and various biophysical and computational techniques, we demonstrate that NCS-1 is a redox-sensitive protein, which responds to oxidizing conditions by the formation of disulfide dimer (dNCS-1), involving its single, highly conservative cysteine C38. The dimer content is unaffected by the elevation of intracellular calcium levels but increases to 10–30% at high free zinc concentrations (characteristic of oxidative stress), which is accompanied by accumulation of the protein in punctual clusters in the perinuclear area. The formation of dNCS-1 represents a specific Zn2+-promoted process, requiring proper folding of the protein and occurring at redox potential values approaching apoptotic levels. The dimer binds Ca2+ only in one EF-hand per monomer, thereby representing a unique state, with decreased α-helicity and thermal stability, increased surface hydrophobicity, and markedly improved inhibitory activity against GRK1 due to 20-fold higher affinity towards the enzyme. Furthermore, dNCS-1 can coordinate zinc and, according to molecular modeling, has an asymmetrical structure and increased conformational flexibility of the subunits, which may underlie their enhanced target-binding properties. In HEK293 cells, dNCS-1 can be reduced by the thioredoxin system, otherwise accumulating as protein aggregates, which are degraded by the proteasome. Interestingly, NCS-1 silencing diminishes the susceptibility of Y79 cancer cells to oxidative stress-induced apoptosis, suggesting that NCS-1 may mediate redox-regulated pathways governing cell death/survival in response to oxidative conditions.
Collapse
|
11
|
Nakamura-Nishitani TY. [A novel Ca 2+ regulatory mechanism specific for immature hearts and its potential as a therapeutic target]. Nihon Yakurigaku Zasshi 2021; 156:346-350. [PMID: 34719567 DOI: 10.1254/fpj.21056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Intracellular Ca2+ plays pivotal roles in cardiac contraction by mediating excitation-contraction (EC) coupling and progression of hypertrophy in the heart. Ample evidence suggests that mechanism of EC coupling in immature hearts are different from those in the adults because of the structural immaturity of the sarcoplasmic reticulum (SR) intracellular Ca2+ store and the different expression of Ca2+-regulatory proteins. However, the detailed molecular mechanism is not completely understood. In the present study, we identified neuronal Ca2+ sensor-1 (NCS-1), an EF-hand Ca2+ binding protein that is important for neuronal functions, also functions as a novel regulator of EC coupling in young hearts. We found that NCS-1 is highly expressed in immature hearts, and its deletion decreased their contractile functions as well as intracellular Ca2+ signals. NCS-1 enhances Ca2+ signals mainly by promoting the Inositol 1,4,5-Trisphosphate receptor (IP3R) function, followed by Ca2+/Calmodulin-dependent Protein Kinase II (CaMKII) signaling, which results in a large increase in the SR Ca2+ content that enhances SR-dependent EC coupling. In addition, NCS-1 expression increases in the early stages of hypertrophy and promotes progression of hypertrophy at least in part through IP3R-dependent elevation of nuclear Ca2+ signaling. Our results reveal a previously unrecognized mechanism of EC coupling in young heart and the progression of cardiac hypertrophy. Furthermore, we found that NCS-1 contributes to stress tolerance in cardiomyocytes via activation of mitochondrial detoxification pathways. We propose that the proteins involved in NCS-1-mediated Ca2+ signaling can be novel therapeutic targets for cardiac diseases, especially in immature hearts.
Collapse
|
12
|
Fischer TT, Nguyen LD, Ehrlich BE. Neuronal calcium sensor 1 (NCS1) dependent modulation of neuronal morphology and development. FASEB J 2021; 35:e21873. [PMID: 34499766 DOI: 10.1096/fj.202100731r] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 07/24/2021] [Accepted: 08/09/2021] [Indexed: 12/14/2022]
Abstract
Calcium (Ca2+ ) signaling is critical for neuronal functioning and requires the concerted interplay of numerous Ca2+ -binding proteins, including neuronal calcium sensor 1 (NCS1). Although an important role of NCS1 in neuronal processes and in neurodevelopmental and neurodegenerative diseases has been established, the underlying mechanisms remain enigmatic. Here, we systematically investigated the functions of NCS1 in the brain. Using Golgi-Cox staining, we observed a reduction in dendritic complexity and spine density in the prefrontal cortex and the dorsal hippocampus of Ncs1-/- mice, which may underlie concomitantly observed deficits in memory acquisition. Subsequent RNA sequencing of Ncs1-/- and Ncs1+/+ mouse brain tissues revealed that NCS1 modulates gene expression related to neuronal morphology and development. Investigation of developmental databases further supported a molecular role of NCS1 during brain development by identifying temporal gene expression patterns. Collectively, this study provides insights into NCS1-dependent signaling and lays the foundation for a better understanding of NCS1-associated diseases.
Collapse
Affiliation(s)
- Tom T Fischer
- Department of Pharmacology, Yale University, New Haven, Connecticut, USA.,Institute of Pharmacology, Heidelberg University, Heidelberg, Germany
| | - Lien D Nguyen
- Department of Pharmacology, Yale University, New Haven, Connecticut, USA.,Interdepartmental Neuroscience Program, Yale University, New Haven, Connecticut, USA
| | - Barbara E Ehrlich
- Department of Pharmacology, Yale University, New Haven, Connecticut, USA.,Interdepartmental Neuroscience Program, Yale University, New Haven, Connecticut, USA.,Department of Celluar and Molecular Physiology, Yale University, New Haven, Connecticut, USA
| |
Collapse
|
13
|
Comprehensive somatosensory and neurological phenotyping of NCS1 knockout mice. Sci Rep 2021; 11:2372. [PMID: 33504822 PMCID: PMC7840744 DOI: 10.1038/s41598-021-81650-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 12/18/2020] [Indexed: 02/07/2023] Open
Abstract
Neuronal calcium sensor 1 (NCS1) regulates a wide range of cellular functions throughout the mammalian nervous systems. Altered NCS1 expression is associated with neurodevelopmental and neurodegenerative diseases. Previous studies focused on affective and cognitive behaviors in NCS1 knockout (KO) mice, but little is known about the physiological and pathological states associated with the loss of NCS1 in the peripheral nervous system. We previously reported that NCS1 expression was reduced following paclitaxel-induced peripheral neuropathy. Here, we comprehensively investigated the phenotypes of NCS1-KO mice through a battery of behavioral tests examining both central and peripheral nervous systems. Generally, only mild differences were observed in thermal sensation and memory acquisition between NCS1-WT and -KO male mice, but not in female mice. No differences were observed in motor performance, affective behaviors, and hearing in both sexes. These results suggest that NCS1 plays a modulatory role in sensory perceptions and cognition, particularly in male mice. NCS1 has been proposed as a pharmacological target for various diseases. Therefore, the sex-specific effects of NCS1 loss may be of clinical interest. As we examined a constitutive KO model, future studies focusing on various conditional KO models will further elucidate the precise physiological significance of NCS1.
Collapse
|
14
|
Nguyen LD, Fischer TT, Abreu D, Arroyo A, Urano F, Ehrlich BE. Calpain inhibitor and ibudilast rescue β cell functions in a cellular model of Wolfram syndrome. Proc Natl Acad Sci U S A 2020; 117:17389-17398. [PMID: 32632005 PMCID: PMC7382278 DOI: 10.1073/pnas.2007136117] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Wolfram syndrome is a rare multisystem disease characterized by childhood-onset diabetes mellitus and progressive neurodegeneration. Most cases are attributed to pathogenic variants in a single gene, Wolfram syndrome 1 (WFS1). There currently is no disease-modifying treatment for Wolfram syndrome, as the molecular consequences of the loss of WFS1 remain elusive. Because diabetes mellitus is the first diagnosed symptom of Wolfram syndrome, we aimed to further examine the functions of WFS1 in pancreatic β cells in the context of hyperglycemia. Knockout (KO) of WFS1 in rat insulinoma (INS1) cells impaired calcium homeostasis and protein kinase B/Akt signaling and, subsequently, decreased cell viability and glucose-stimulated insulin secretion. Targeting calcium homeostasis with reexpression of WFS1, overexpression of WFS1's interacting partner neuronal calcium sensor-1 (NCS1), or treatment with calpain inhibitor and ibudilast reversed deficits observed in WFS1-KO cells. Collectively, our findings provide insight into the disease mechanism of Wolfram syndrome and highlight new targets and drug candidates to facilitate the development of a treatment for this disorder and similar diseases.
Collapse
Affiliation(s)
- Lien D Nguyen
- Department of Pharmacology, Yale University, New Haven, CT 06520
- Interdepartmental Neuroscience Program, Yale University, New Haven, CT 06520
| | - Tom T Fischer
- Department of Pharmacology, Yale University, New Haven, CT 06520
- Institute of Pharmacology, University of Heidelberg, 69117 Heidelberg, Germany
| | - Damien Abreu
- Department of Medicine, Division of Endocrinology, Metabolism, and Lipid Research, Washington University School of Medicine, St. Louis, MO 63110
- Medical Scientist Training Program, Washington University School of Medicine, St. Louis, MO 63110
| | - Alfredo Arroyo
- Department of Pharmacology, Yale University, New Haven, CT 06520
| | - Fumihiko Urano
- Department of Medicine, Division of Endocrinology, Metabolism, and Lipid Research, Washington University School of Medicine, St. Louis, MO 63110
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110
| | - Barbara E Ehrlich
- Department of Pharmacology, Yale University, New Haven, CT 06520;
- Interdepartmental Neuroscience Program, Yale University, New Haven, CT 06520
| |
Collapse
|
15
|
Grosshans HK, Fischer TT, Steinle JA, Brill AL, Ehrlich BE. Neuronal Calcium Sensor 1 is up-regulated in response to stress to promote cell survival and motility in cancer cells. Mol Oncol 2020; 14:1134-1151. [PMID: 32239615 PMCID: PMC7266285 DOI: 10.1002/1878-0261.12678] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 02/08/2020] [Accepted: 03/25/2020] [Indexed: 12/13/2022] Open
Abstract
Changes in intracellular calcium (Ca2+) signaling can modulate cellular machinery required for cancer progression. Neuronal calcium sensor 1 (NCS1) is a ubiquitously expressed Ca2+‐binding protein that promotes tumor aggressiveness by enhancing cell survival and metastasis. However, the underlying mechanism by which NCS1 contributes to increased tumor aggressiveness has yet to be identified. In this study, we aimed to determine (a) whether NCS1 expression changes in response to external stimuli, (b) the importance of NCS1 for cell survival and migration, and (c) the cellular mechanism(s) through which NSC1 modulates these outcomes. We found that NCS1 abundance increases under conditions of stress, most prominently after stimulation with the pro‐inflammatory cytokine tumor necrosis factor α, in a manner dependent on nuclear factor kappa‐light‐chain‐enhancer of activated B cells (NFκB). We found that NFκB signaling is activated in human breast cancer tissue, which was accompanied by an increase in NCS1 mRNA expression. Further exploration into the relevance of NCS1 in breast cancer progression showed that knockout of NCS1 (NCS1 KO) caused decreased cell survival and motility, increased baseline intracellular Ca2+ levels, and decreased inositol 1,4,5‐trisphosphate‐mediated Ca2+ responses. Protein kinase B (Akt) activity was decreased in NCS1 KO cells, which could be rescued by buffering intracellular Ca2+. Conversely, Akt activity was increased in cells overexpressing NCS1 (NCS1 OE). We therefore conclude that NCS1 acts as cellular stress response protein up‐regulated by stress‐induced NFκB signaling and that NCS1 influences cell survival and motility through effects on Ca2+ signaling and Akt pathway activation.
Collapse
Affiliation(s)
- Henrike K Grosshans
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT, USA
| | - Tom T Fischer
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT, USA.,Institute of Pharmacology, Heidelberg University, Germany
| | - Julia A Steinle
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT, USA
| | - Allison L Brill
- Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT, USA
| | - Barbara E Ehrlich
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT, USA.,Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, CT, USA
| |
Collapse
|
16
|
Magno LAV, Tenza-Ferrer H, Collodetti M, Nicolau EDS, Khlghatyan J, Del'Guidice T, Romano-Silva MA, Beaulieu JM. Contribution of neuronal calcium sensor 1 (Ncs-1) to anxiolytic-like and social behavior mediated by valproate and Gsk3 inhibition. Sci Rep 2020; 10:4566. [PMID: 32165725 PMCID: PMC7067888 DOI: 10.1038/s41598-020-61248-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 02/24/2020] [Indexed: 12/20/2022] Open
Abstract
Peripheral biomarker and post-mortem brains studies have shown alterations of neuronal calcium sensor 1 (Ncs-1) expression in people with bipolar disorder or schizophrenia. However, its engagement by psychiatric medications and potential contribution to behavioral regulation remains elusive. We investigated the effect on Ncs-1 expression of valproic acid (VPA), a mood stabilizer used for the management of bipolar disorder. Treatment with VPA induced Ncs-1 gene expression in cell line while chronic administration of this drug to mice increased both Ncs-1 protein and mRNA levels in the mouse frontal cortex. Inhibition of histone deacetylases (HDACs), a known biochemical effect of VPA, did not alter the expression of Ncs-1. In contrast, pharmacological inhibition or genetic downregulation of glycogen synthase kinase 3β (Gsk3β) increased Ncs-1 expression, whereas overexpression of a constitutively active Gsk3β had the opposite effect. Moreover, adeno-associated virus-mediated Ncs-1 overexpression in mouse frontal cortex caused responses similar to those elicited by VPA or lithium in tests evaluating social and mood-related behaviors. These findings indicate that VPA increases frontal cortex Ncs-1 gene expression as a result of Gsk3 inhibition. Furthermore, behavioral changes induced by Ncs-1 overexpression support a contribution of this mechanism in the regulation of behavior by VPA and potentially other psychoactive medications inhibiting Gsk3 activity.
Collapse
Affiliation(s)
- Luiz Alexandre Viana Magno
- Centro de Tecnologia em Medicina Molecular, Belo Horizonte, Brazil.,Departamento de Saúde Mental, Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, CEP, 30130-100, Brazil.,Department of Psychiatry and Neuroscience, Laval University, Québec, Canada
| | - Helia Tenza-Ferrer
- Centro de Tecnologia em Medicina Molecular, Belo Horizonte, Brazil.,Departamento de Saúde Mental, Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, CEP, 30130-100, Brazil
| | - Mélcar Collodetti
- Centro de Tecnologia em Medicina Molecular, Belo Horizonte, Brazil.,Departamento de Saúde Mental, Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, CEP, 30130-100, Brazil
| | - Eduardo de Souza Nicolau
- Centro de Tecnologia em Medicina Molecular, Belo Horizonte, Brazil.,Departamento de Saúde Mental, Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, CEP, 30130-100, Brazil
| | - Jivan Khlghatyan
- Department of Psychiatry and Neuroscience, Laval University, Québec, Canada.,Department of Pharmacology & Toxicology, University of Toronto, Toronto, Canada
| | - Thomas Del'Guidice
- Department of Psychiatry and Neuroscience, Laval University, Québec, Canada.,Feldan Therapeutics, Québec City, Canada
| | - Marco Aurélio Romano-Silva
- Centro de Tecnologia em Medicina Molecular, Belo Horizonte, Brazil. .,Departamento de Saúde Mental, Faculdade de Medicina, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, CEP, 30130-100, Brazil.
| | - Jean Martin Beaulieu
- Department of Psychiatry and Neuroscience, Laval University, Québec, Canada. .,Department of Pharmacology & Toxicology, University of Toronto, Toronto, Canada.
| |
Collapse
|
17
|
Simons C, Benkert J, Deuter N, Poetschke C, Pongs O, Schneider T, Duda J, Liss B. NCS-1 Deficiency Affects mRNA Levels of Genes Involved in Regulation of ATP Synthesis and Mitochondrial Stress in Highly Vulnerable Substantia nigra Dopaminergic Neurons. Front Mol Neurosci 2019; 12:252. [PMID: 31827421 PMCID: PMC6890851 DOI: 10.3389/fnmol.2019.00252] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 09/27/2019] [Indexed: 12/20/2022] Open
Abstract
Neuronal Ca2+ sensor proteins (NCS) transduce changes in Ca2+ homeostasis into altered signaling and neuronal function. NCS-1 activity has emerged as important for neuronal viability and pathophysiology. The progressive degeneration of dopaminergic (DA) neurons, particularly within the Substantia nigra (SN), is the hallmark of Parkinson's disease (PD), causing its motor symptoms. The activity-related Ca2+ homeostasis of SN DA neurons, mitochondrial dysfunction, and metabolic stress promote neurodegeneration and PD. In contrast, NCS-1 in general has neuroprotective effects. The underlying mechanisms are unclear. We analyzed transcriptional changes in SN DA neurons upon NCS-1 loss by combining UV-laser microdissection and RT-qPCR-approaches to compare expression levels of a panel of PD and/or Ca2+-stress related genes from wildtype and NCS-1 KO mice. In NCS-1 KO, we detected significantly lower mRNA levels of mitochondrially coded ND1, a subunit of the respiratory chain, and of the neuron-specific enolase ENO2, a glycolytic enzyme. We also detected lower levels of the mitochondrial uncoupling proteins UCP4 and UCP5, the PARK7 gene product DJ-1, and the voltage-gated Ca2+ channel Cav2.3 in SN DA neurons from NCS-1 KO. Transcripts of other analyzed uncoupling proteins (UCPs), mitochondrial Ca2+ transporters, PARK genes, and ion channels were not altered. As Cav channels are linked to regulation of gene expression, metabolic stress and degeneration of SN DA neurons in PD, we analyzed Cav2.3 KO mice, to address if the transcriptional changes in NCS-1 KO were also present in Cav.2.3 KO, and thus probably correlated with lower Cav2.3 transcripts. However, in SN DA neurons from Cav2.3 KO mice, ND1 mRNA as well as genomic DNA levels were elevated, while ENO2, UCP4, UCP5, and DJ-1 transcript levels were not altered. In conclusion, our data indicate a possible novel function of NCS-1 in regulating gene transcription or stabilization of mRNAs in SN DA neurons. Although we do not provide functional data, our findings at the transcript level could point to impaired ATP production (lower ND1 and ENO2) and elevated metabolic stress (lower UCP4, UCP5, and DJ-1 levels) in SN DA neurons from NCS-1 KO mice. We speculate that NCS-1 is involved in stimulating ATP synthesis, while at the same time controlling mitochondrial metabolic stress, and in this way could protect SN DA neurons from degeneration.
Collapse
Affiliation(s)
- Carsten Simons
- Institute of Applied Physiology, University of Ulm, Ulm, Germany
| | - Julia Benkert
- Institute of Applied Physiology, University of Ulm, Ulm, Germany
| | - Nora Deuter
- Institute of Applied Physiology, University of Ulm, Ulm, Germany
| | | | - Olaf Pongs
- Institute of Physiology, Center for Integrative Physiology and Molecular Medicine, University of the Saarland, Homburg, Germany
| | - Toni Schneider
- Institute of Neurophysiology, University of Cologne, Cologne, Germany
| | - Johanna Duda
- Institute of Applied Physiology, University of Ulm, Ulm, Germany
| | - Birgit Liss
- Institute of Applied Physiology, University of Ulm, Ulm, Germany.,New College, University of Oxford, Oxford, United Kingdom
| |
Collapse
|
18
|
Bong AHL, Robitaille M, Milevskiy MJG, Roberts-Thomson SJ, Monteith GR. NCS-1 expression is higher in basal breast cancers and regulates calcium influx and cytotoxic responses to doxorubicin. Mol Oncol 2019; 14:87-104. [PMID: 31647602 PMCID: PMC6944103 DOI: 10.1002/1878-0261.12589] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 09/13/2019] [Accepted: 10/23/2019] [Indexed: 12/18/2022] Open
Abstract
Neuronal calcium sensor‐1 (NCS‐1) is a positive modulator of IP3 receptors and was recently associated with poorer survival in breast cancers. However, the association between NCS‐1 and breast cancer molecular subtypes and the effects of NCS‐1 silencing on calcium (Ca2+) signaling in breast cancer cells remain unexplored. Herein, we report for the first time an increased expression of NCS‐1 in breast cancers of the basal molecular subtype, a subtype associated with poor prognosis. Using MDA‐MB‐231 basal breast cancer cells expressing the GCaMP6m Ca2+ indicator, we showed that NCS‐1 silencing did not result in major changes in cytosolic free Ca2+ increases as a result of endoplasmic reticulum Ca2+ store mobilization. However, NCS‐1 silencing suppressed unstimulated basal Ca2+ influx. NCS‐1 silencing in MDA‐MB‐231 cells also promoted necrotic cell death induced by the chemotherapeutic drug doxorubicin (1 µm). The effect of NCS‐1 silencing on cell death was phenocopied by silencing of ORAI1, a Ca2+ store‐operated Ca2+ channel that maintains Ca2+ levels in the endoplasmic reticulum Ca2+ store and whose expression was significantly positively correlated with NCS‐1 in clinical breast cancer samples. This newly identified association between NCS‐1 and basal breast cancers, together with the identification of the role of NCS‐1 in the regulation of the effects of doxorubicin in MDA‐MB‐231 breast cancer cells, suggests that NCS‐1 and/or pathways regulated by NCS‐1 may be important in the treatment of basal breast cancers in women.
Collapse
Affiliation(s)
- Alice H L Bong
- School of Pharmacy, The University of Queensland, Brisbane, Qld, Australia
| | - Mélanie Robitaille
- School of Pharmacy, The University of Queensland, Brisbane, Qld, Australia
| | - Michael J G Milevskiy
- ACRF Stem Cells and Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Vic., Australia
| | | | - Gregory R Monteith
- School of Pharmacy, The University of Queensland, Brisbane, Qld, Australia.,Mater Research Institute, Translational Research Institute, The University of Queensland, Brisbane, Qld, Australia
| |
Collapse
|
19
|
Nguyen LD, Petri ET, Huynh LK, Ehrlich BE. Characterization of NCS1-InsP3R1 interaction and its functional significance. J Biol Chem 2019; 294:18923-18933. [PMID: 31659121 DOI: 10.1074/jbc.ra119.009736] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 10/11/2019] [Indexed: 11/06/2022] Open
Abstract
Inositol 1,4,5-trisphosphate receptors (InsP3Rs) are endoplasmic reticulum-localized channels that mediate Ca2+ release from the endoplasmic reticulum into the cytoplasm. We previously reported that an EF-hand Ca2+-binding protein, neuronal calcium sensor 1 (NCS1), binds to the InsP3R and thereby increases channel open probability, an event associated with chemotherapy-induced peripheral neuropathy. However, the exact NCS1-binding site on InsP3R remains unknown. Using protein docking, co-immunoprecipitation, and blocking peptides, we mapped the NCS1-binding site to residues 66-110 on the suppressor domain of InsP3R type 1 (InsP3R1). We also identified Leu-89, a residue in the hydrophobic pocket of NCS1, as being critical for facilitating the NCS1-InsP3R1 interaction. Overexpression of WT NCS1 in MDA-MB231 breast cancer cells increased Ca2+ signaling and survival, whereas overexpression of Leu-89 NCS1 variants decreased Ca2+ signaling and survival, further suggesting the importance of this residue in the NCS1-InsP3R1 interaction. In conclusion, we show that NCS1-InsP3R1 interaction enhances intracellular Ca2+ signaling in cells and can be modulated by altering or occluding the hydrophobic pocket of NCS1. This improved understanding of the NCS1-InsP3R1 interaction may facilitate the development of management strategies for diseases resulting from aberrant NCS1 expression.
Collapse
Affiliation(s)
- Lien D Nguyen
- Department of Pharmacology, Yale University, New Haven, Connecticut 06520; Interdepartmental Neuroscience Program, Yale University, New Haven, Connecticut 06520
| | - Edward T Petri
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Novi Sad 21000, Serbia, and the
| | - Larry K Huynh
- Department of Pharmacology, Yale University, New Haven, Connecticut 06520
| | - Barbara E Ehrlich
- Department of Pharmacology, Yale University, New Haven, Connecticut 06520; Department of Cellular and Molecular Physiology, Yale University, New Haven, Connecticut 06520.
| |
Collapse
|
20
|
Nakamura TY, Nakao S, Wakabayashi S. Emerging Roles of Neuronal Ca 2+ Sensor-1 in Cardiac and Neuronal Tissues: A Mini Review. Front Mol Neurosci 2019; 12:56. [PMID: 30886571 PMCID: PMC6409499 DOI: 10.3389/fnmol.2019.00056] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 02/15/2019] [Indexed: 11/13/2022] Open
Abstract
The EF-hand calcium (Ca2+)-binding protein, neuronal Ca2+ sensor-1 (NCS-1/frequenin), is predominantly expressed in neuronal tissues and plays a crucial role in neuronal functions, including synaptic transmission and plasticity. NCS-1 has diverse functional roles, as elucidated in the past 15 years, which include the regulation of phosphatidylinositol 4-kinase IIIβ (PI-4K-β) and several ion channels such as voltage-gated K+ and Ca2+ channels, the D2 dopamine receptors, and inositol 1,4,5-trisphosphate receptors (InsP3Rs). Functional analyses demonstrated that NCS-1 enhances exocytosis and neuronal survival after injury, as well as promotes learning and memory in mice. NCS-1 is also expressed in the heart including the Purkinje fibers (PFs) of the conduction system. NCS-1 interacts with KV4 K+ channels together with dipeptidyl peptidase-like protein-6 (DPP-6), and this macromolecule then composes the transient outward current in PFs and contributes to the repolarization of PF action potential, thus being responsible for idiopathic arrhythmia. Moreover, NCS-1 expression was reported to be significantly high at the immature stage and at hypertrophy in adults. That report demonstrated that NCS-1 positively regulates cardiac contraction in immature hearts by increasing intracellular Ca2+ signals through interaction with InsP3Rs. With the related signals, NCS-1 activates nuclear Ca2+ signals, which would be a mechanism underlying hormone-induced cardiac hypertrophy. Furthermore, NCS-1 contributes to stress tolerance in cardiomyocytes by activating mitochondrial detoxification pathways, with a key role in Ca2+-dependent pathways. In this review, we will discuss recent findings supporting the functional significance of NCS-1 in the brain and heart and will address possible underlying molecular mechanisms.
Collapse
Affiliation(s)
- Tomoe Y Nakamura
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Japan
| | - Shu Nakao
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Japan.,Department of Biomedical Sciences, College of Life Sciences, Ritsumeikan University, Kusatsu, Japan
| | - Shigeo Wakabayashi
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Japan.,Department of Pharmacology, Osaka Medical College, Takatsuki, Japan
| |
Collapse
|
21
|
Bandura J, Feng ZP. Current Understanding of the Role of Neuronal Calcium Sensor 1 in Neurological Disorders. Mol Neurobiol 2019; 56:6080-6094. [PMID: 30719643 DOI: 10.1007/s12035-019-1497-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Accepted: 01/15/2019] [Indexed: 12/12/2022]
Abstract
Neuronal calcium sensor 1 (NCS-1) is a high-affinity calcium-binding protein and its ubiquitous expression in the nervous system implies a wide range of functions. To date, it has been implicated in regulation of calcium channels in both axonal growth cones and presynaptic terminals, pre- and postsynaptic plasticity mechanisms, learning and memory behaviors, dopaminergic signaling, and axonal regeneration. This review summarizes these functions and relates them to several diseases in which NCS-1 plays a role, such as schizophrenia and bipolar disorder, X-linked mental retardation and fragile X syndrome, and spinal cord injury. Many questions remain unanswered about the role of NCS-1 in these diseases, particularly as the genetic factors that control NCS-1 expression in both normal and diseased states are still poorly understood. The review further identifies the therapeutic potential of manipulating the interaction of NCS-1 with its many targets and suggests directions for future research on the role of NCS-1 in these disorders.
Collapse
Affiliation(s)
- Julia Bandura
- Department of Physiology, Faculty of Medicine, University of Toronto, 3306 MSB, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada
| | - Zhong-Ping Feng
- Department of Physiology, Faculty of Medicine, University of Toronto, 3306 MSB, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada.
| |
Collapse
|
22
|
Tsvetkov PO, Roman AY, Baksheeva VE, Nazipova AA, Shevelyova MP, Vladimirov VI, Buyanova MF, Zinchenko DV, Zamyatnin AA, Devred F, Golovin AV, Permyakov SE, Zernii EY. Functional Status of Neuronal Calcium Sensor-1 Is Modulated by Zinc Binding. Front Mol Neurosci 2018; 11:459. [PMID: 30618610 PMCID: PMC6302015 DOI: 10.3389/fnmol.2018.00459] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Accepted: 11/28/2018] [Indexed: 11/29/2022] Open
Abstract
Neuronal calcium sensor-1 (NCS-1) protein is abundantly expressed in the central nervous system and retinal neurons, where it regulates many vital processes such as synaptic transmission. It coordinates three calcium ions by EF-hands 2-4, thereby transducing Ca2+ signals to a wide range of protein targets, including G protein-coupled receptors and their kinases. Here, we demonstrate that NCS-1 also has Zn2+-binding sites, which affect its structural and functional properties upon filling. Fluorescence and circular dichroism experiments reveal the impact of Zn2+ binding on NCS-1 secondary and tertiary structure. According to atomic absorption spectroscopy and isothermal titration calorimetry studies, apo-NCS-1 has two high-affinity (4 × 106 M-1) and one low-affinity (2 × 105 M-1) Zn2+-binding sites, whereas Mg2+-loaded and Ca2+-loaded forms (which dominate under physiological conditions) bind two zinc ions with submicromolar affinity. Metal competition analysis and circular dichroism studies suggest that Zn2+-binding sites of apo- and Mg2+-loaded NCS-1 overlap with functional EF-hands of the protein. Consistently, high Zn2+ concentrations displace Mg2+ from the EF-hands and decrease the stoichiometry of Ca2+ binding. Meanwhile, one of the EF-hands of Zn2+-saturated NCS-1 exhibits a 14-fold higher calcium affinity, which increases the overall calcium sensitivity of the protein. Based on QM/MM molecular dynamics simulations, Zn2+ binding to Ca2+-loaded NCS-1 could occur at EF-hands 2 and 4. The high-affinity zinc binding increases the thermal stability of Ca2+-free NCS-1 and favours the interaction of its Ca2+-loaded form with target proteins, such as dopamine receptor D2R and GRK1. In contrast, low-affinity zinc binding promotes NCS-1 aggregation accompanied by the formation of twisted rope-like structures. Altogether, our findings suggest a complex interplay between magnesium, calcium and zinc binding to NCS-1, leading to the appearance of multiple conformations of the protein, in turn modulating its functional status.
Collapse
Affiliation(s)
- Philipp O Tsvetkov
- Aix-Marseille University, CNRS, INP, Institute of Neurophysiopathology, Faculty of Pharmacy, Marseille, France
| | - Andrei Yu Roman
- Institute of Physiologically Active Compounds (RAS), Chernogolovka, Russia
| | - Viktoriia E Baksheeva
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Aliya A Nazipova
- Institute for Biological Instrumentation of the Russian Academy of Sciences, Pushchino, Russia
| | - Marina P Shevelyova
- Institute for Biological Instrumentation of the Russian Academy of Sciences, Pushchino, Russia
| | - Vasiliy I Vladimirov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Pushchino, Russia
| | - Michelle F Buyanova
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, Moscow, Russia
| | - Dmitry V Zinchenko
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Pushchino, Russia
| | - Andrey A Zamyatnin
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, Moscow, Russia
| | - François Devred
- Aix-Marseille University, CNRS, INP, Institute of Neurophysiopathology, Faculty of Pharmacy, Marseille, France
| | - Andrey V Golovin
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
- Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, Moscow, Russia
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, Moscow, Russia
- Faculty of Computer Science, Higher School of Economics, Moscow, Russia
| | - Sergei E Permyakov
- Institute for Biological Instrumentation of the Russian Academy of Sciences, Pushchino, Russia
| | - Evgeni Yu Zernii
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russia
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, Moscow, Russia
| |
Collapse
|
23
|
Schuette D, Moore LM, Robert ME, Taddei TH, Ehrlich BE. Hepatocellular Carcinoma Outcome Is Predicted by Expression of Neuronal Calcium Sensor 1. Cancer Epidemiol Biomarkers Prev 2018; 27:1091-1100. [PMID: 29789326 PMCID: PMC8465775 DOI: 10.1158/1055-9965.epi-18-0167] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 04/06/2018] [Accepted: 05/17/2018] [Indexed: 11/16/2022] Open
Abstract
Background: Hepatocellular carcinoma (HCC) is the second leading cause of cancer-related death worldwide. There is an urgent demand for prognostic biomarkers that facilitate early tumor detection, as the incidence of HCC has tripled in the United States in the last three decades. Biomarkers to identify populations at risk would have significant impact on survival. We recently found that expression of Neuronal Calcium Sensor 1 (NCS1), a Ca2+-dependent signaling molecule, predicted disease outcome in breast cancer, but its predictive value in other cancer types is unknown. This protein is potentially useful because increased NCS1 regulates Ca2+ signaling and increased Ca2+ signaling is a hallmark of metastatic cancers, conferring cellular motility and an increasingly aggressive phenotype to tumors.Methods: We explored the relationship between NCS1 expression levels and patient survival in two publicly available liver cancer cohorts and a tumor microarray using data mining strategies.Results: High NCS1 expression levels are significantly associated with worse disease outcome in Asian patients within these cohorts. In addition, a variety of Ca2+-dependent and tumor growth-promoting genes are transcriptionally coregulated with NCS1 and many of them are involved in cytoskeleton organization, suggesting that NCS1 induced dysregulated Ca2+ signaling facilitates cellular motility and metastasis.Conclusions: We found NCS1 to be a novel biomarker in HCC. Furthermore, our study identified a pharmacologically targetable signaling complex that can influence tumor progression in HCC.Impact: These results lay the foundation for using NCS1 as a prognostic biomarker in prospective cohorts of HCC patients and for further functional assessment of the characterized signaling axis. Cancer Epidemiol Biomarkers Prev; 27(9); 1091-100. ©2018 AACR.
Collapse
Affiliation(s)
- Daniel Schuette
- Department of Pharmacology, Yale University, New Haven, Connecticut
| | - Lauren M Moore
- Department of Pharmacology, Yale University, New Haven, Connecticut
| | - Marie E Robert
- Department of Pathology, Yale University, New Haven, Connecticut
| | - Tamar H Taddei
- Department of Medicine (Digestive Diseases), Yale University, New Haven, Connecticut
| | - Barbara E Ehrlich
- Department of Pharmacology, Yale University, New Haven, Connecticut.
| |
Collapse
|
24
|
Boeckel GR, Ehrlich BE. NCS-1 is a regulator of calcium signaling in health and disease. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2018; 1865:1660-1667. [PMID: 29746899 DOI: 10.1016/j.bbamcr.2018.05.005] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 05/02/2018] [Accepted: 05/04/2018] [Indexed: 02/07/2023]
Abstract
Neuronal Calcium Sensor-1 (NCS-1) is a highly conserved calcium binding protein which contributes to the maintenance of intracellular calcium homeostasis and regulation of calcium-dependent signaling pathways. It is involved in a variety of physiological cell functions, including exocytosis, regulation of calcium permeable channels, neuroplasticity and response to neuronal damage. Over the past 30 years, continuing investigation of cellular functions of NCS-1 and associated disease states have highlighted its function in the pathophysiology of several disorders and as a therapeutic target. Among the diseases that were found to be associated with NCS-1 are neurological disorders such as bipolar disease and non-neurological conditions such as breast cancer. Furthermore, alteration of NCS-1 expression is associated with substance abuse disorders and severe side effects of chemotherapeutic agents. The objective of this article is to summarize the current body of evidence describing NCS-1 and its interactions on a molecular and cellular scale, as well as describing macroscopic implications in physiology and medicine. Particular attention is paid to the role of NCS-1 in development and prevention of chemotherapy induced peripheral neuropathy (CIPN).
Collapse
Affiliation(s)
- Göran R Boeckel
- Department of Pharmacology, Yale University, New Haven, CT, United States; Institut für Physiologie, Universität zu Lübeck, Ratzeburger Allee 160, D-23562 Lübeck, Germany
| | - Barbara E Ehrlich
- Department of Pharmacology, Yale University, New Haven, CT, United States; Institut für Physiologie, Universität zu Lübeck, Ratzeburger Allee 160, D-23562 Lübeck, Germany.
| |
Collapse
|
25
|
Gorkhali R, Huang K, Kirberger M, Yang JJ. Defining potential roles of Pb(2+) in neurotoxicity from a calciomics approach. Metallomics 2017; 8:563-78. [PMID: 27108875 DOI: 10.1039/c6mt00038j] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal ions play crucial roles in numerous biological processes, facilitating biochemical reactions by binding to various proteins. An increasing body of evidence suggests that neurotoxicity associated with exposure to nonessential metals (e.g., Pb(2+)) involves disruption of synaptic activity, and these observed effects are associated with the ability of Pb(2+) to interfere with Zn(2+) and Ca(2+)-dependent functions. However, the molecular mechanism behind Pb(2+) toxicity remains a topic of debate. In this review, we first discuss potential neuronal Ca(2+) binding protein (CaBP) targets for Pb(2+) such as calmodulin (CaM), synaptotagmin, neuronal calcium sensor-1 (NCS-1), N-methyl-d-aspartate receptor (NMDAR) and family C of G-protein coupled receptors (cGPCRs), and their involvement in Ca(2+)-signalling pathways. We then compare metal binding properties between Ca(2+) and Pb(2+) to understand the structural implications of Pb(2+) binding to CaBPs. Statistical and biophysical studies (e.g., NMR and fluorescence spectroscopy) of Pb(2+) binding are discussed to investigate the molecular mechanism behind Pb(2+) toxicity. These studies identify an opportunistic, allosteric binding of Pb(2+) to CaM, which is distinct from ionic displacement. Together, these data suggest three potential modes of Pb(2+) activity related to molecular and/or neural toxicity: (i) Pb(2+) can occupy Ca(2+)-binding sites, inhibiting the activity of the protein by structural modulation, (ii) Pb(2+) can mimic Ca(2+) in the binding sites, falsely activating the protein and perturbing downstream activities, or (iii) Pb(2+) can bind outside of the Ca(2+)-binding sites, resulting in the allosteric modulation of the protein activity. Moreover, the data further suggest that even low concentrations of Pb(2+) can interfere at multiple points within the neuronal Ca(2+) signalling pathways to cause neurotoxicity.
Collapse
Affiliation(s)
- Rakshya Gorkhali
- Department of Chemistry, Center for Diagnostics and Therapeutics, and Drug Design and Biotechnology, Georgia State University, Atlanta, GA 3030, USA.
| | - Kenneth Huang
- Department of Chemistry, Center for Diagnostics and Therapeutics, and Drug Design and Biotechnology, Georgia State University, Atlanta, GA 3030, USA.
| | - Michael Kirberger
- Department of Chemistry and Physics, Clayton State University, Morrow, GA 30260, USA.
| | - Jenny J Yang
- Department of Chemistry, Center for Diagnostics and Therapeutics, and Drug Design and Biotechnology, Georgia State University, Atlanta, GA 3030, USA.
| |
Collapse
|
26
|
Moore LM, England A, Ehrlich BE, Rimm DL. Calcium Sensor, NCS-1, Promotes Tumor Aggressiveness and Predicts Patient Survival. Mol Cancer Res 2017; 15:942-952. [PMID: 28275088 DOI: 10.1158/1541-7786.mcr-16-0408] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 11/03/2016] [Accepted: 03/01/2017] [Indexed: 02/06/2023]
Abstract
Neuronal Calcium Sensor 1 (NCS-1) is a multi-functional Ca2+-binding protein that affects a range of cellular processes beyond those related to neurons. Functional characterization of NCS-1 in neuronal model systems suggests that NCS-1 may influence oncogenic processes. To this end, the biological role of NCS-1 was investigated by altering its endogenous expression in MCF-7 and MB-231 breast cancer cells. Overexpression of NCS-1 resulted in a more aggressive tumor phenotype demonstrated by a marked increase in invasion and motility, and a decrease in cell-matrix adhesion to collagen IV. Overexpression of NCS-1 was also shown to increase the efficacy of paclitaxel-induced cell death in a manner that was independent of cellular proliferation. To determine the association between NCS-1 and clinical outcome, NCS-1 expression was measured in two independent breast cancer cohorts by the Automated Quantitative Analysis method of quantitative immunofluorescence. Elevated levels of NCS-1 were significantly correlated with shorter survival rates. Furthermore, multivariate analysis demonstrated that NCS-1 status was prognostic, independent of estrogen receptor, progesterone receptor, HER2, and lymph node status. These findings indicate that NCS-1 plays a role in the aggressive behavior of a subset of breast cancers and has therapeutic or biomarker potential.Implications: NCS-1, a calcium-binding protein, is associated with clinicopathologic features of aggressiveness in breast cancer cells and worse outcome in two breast cancer patient cohorts. Mol Cancer Res; 15(7); 942-52. ©2017 AACR.
Collapse
Affiliation(s)
- Lauren M Moore
- Department of Experimental Pathology, Yale School of Medicine, New Haven, Connecticut
| | - Allison England
- Department of Experimental Pathology, Yale School of Medicine, New Haven, Connecticut
| | - Barbara E Ehrlich
- Department of Pharmacology, Yale School of Medicine, New Haven, Connecticut
| | - David L Rimm
- Department of Experimental Pathology, Yale School of Medicine, New Haven, Connecticut.
| |
Collapse
|
27
|
Nakamura TY, Nakao S, Nakajo Y, Takahashi JC, Wakabayashi S, Yanamoto H. Possible Signaling Pathways Mediating Neuronal Calcium Sensor-1-Dependent Spatial Learning and Memory in Mice. PLoS One 2017; 12:e0170829. [PMID: 28122057 PMCID: PMC5266288 DOI: 10.1371/journal.pone.0170829] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 01/11/2017] [Indexed: 01/10/2023] Open
Abstract
Intracellular Ca2+ signaling regulates diverse functions of the nervous system. Many of these neuronal functions, including learning and memory, are regulated by neuronal calcium sensor-1 (NCS-1). However, the pathways by which NCS-1 regulates these functions remain poorly understood. Consistent with the findings of previous reports, we revealed that NCS-1 deficient (Ncs1-/-) mice exhibit impaired spatial learning and memory function in the Morris water maze test, although there was little change in their exercise activity, as determined via treadmill-analysis. Expression of brain-derived neurotrophic factor (BDNF; a key regulator of memory function) and dopamine was significantly reduced in the Ncs1-/- mouse brain, without changes in the levels of glial cell-line derived neurotrophic factor or nerve growth factor. Although there were no gross structural abnormalities in the hippocampi of Ncs1-/- mice, electron microscopy analysis revealed that the density of large dense core vesicles in CA1 presynaptic neurons, which release BDNF and dopamine, was decreased. Phosphorylation of Ca2+/calmodulin-dependent protein kinase II-α (CaMKII-α, which is known to trigger long-term potentiation and increase BDNF levels, was significantly reduced in the Ncs1-/- mouse brain. Furthermore, high voltage electric potential stimulation, which increases the levels of BDNF and promotes spatial learning, significantly increased the levels of NCS-1 concomitant with phosphorylated CaMKII-α in the hippocampus; suggesting a close relationship between NCS-1 and CaMKII-α. Our findings indicate that NCS-1 may regulate spatial learning and memory function at least in part through activation of CaMKII-α signaling, which may directly or indirectly increase BDNF production.
Collapse
Affiliation(s)
- Tomoe Y. Nakamura
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
- * E-mail:
| | - Shu Nakao
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
| | - Yukako Nakajo
- Laboratory of Neurology and Neurosurgery, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
| | - Jun C. Takahashi
- Department of Neurosurgery, National Cerebral and Cardiovascular Center Hospital, Suita, Osaka, Japan
| | - Shigeo Wakabayashi
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
| | - Hiroji Yanamoto
- Laboratory of Neurology and Neurosurgery, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
| |
Collapse
|
28
|
Identification of critical amino acid residues and functional conservation of the Neurospora crassa and Rattus norvegicus orthologues of neuronal calcium sensor-1. Genetica 2016; 144:665-674. [PMID: 27796528 DOI: 10.1007/s10709-016-9933-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 10/11/2016] [Indexed: 10/20/2022]
Abstract
Neuronal calcium sensor-1 (NCS-1) is a member of neuronal calcium sensor family of proteins consisting of an amino terminal myristoylation domain and four conserved calcium (Ca2+) binding EF-hand domains. We performed site-directed mutational analysis of three key amino acid residues that are glycine in the conserved site for the N-terminal myristoylation, a conserved glutamic acid residue responsible for Ca2+ binding in the third EF-hand (EF3), and an unusual non-conserved amino acid arginine at position 175 in the Neurospora crassa NCS-1. The N. crassa strains possessing the ncs-1 mutant allele of these three amino acid residues showed impairment in functions ranging from growth, Ca2+ stress tolerance, and ultraviolet survival. In addition, heterologous expression of the NCS-1 from Rattus norvegicus in N. crassa confirmed its interspecies functional conservation. Moreover, functions of glutamic acid at position 120, the first Ca2+ binding residue among all the EF-hands of the R. norvegicus NCS-1 was found conserved. Thus, we identified three critical amino acid residues of N. crassa NCS-1, and demonstrated its functional conservation across species using the orthologue from R. norvegicus.
Collapse
|
29
|
Nakamura TY, Nakao S, Wakabayashi S. Neuronal Ca 2+ sensor-1 contributes to stress tolerance in cardiomyocytes via activation of mitochondrial detoxification pathways. J Mol Cell Cardiol 2016; 99:23-34. [PMID: 27555477 DOI: 10.1016/j.yjmcc.2016.08.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 08/13/2016] [Accepted: 08/18/2016] [Indexed: 01/28/2023]
Abstract
Identification of the molecules involved in cell death/survival pathways is important for understanding the mechanisms of cell loss in cardiac disease, and thus is clinically relevant. Ca2+-dependent signals are often involved in these pathways. Here, we found that neuronal Ca2+-sensor-1 (NCS-1), a Ca2+-binding protein, has an important role in cardiac survival during stress. Cardiomyocytes derived from NCS-1-deficient (Ncs1-/-) mice were more susceptible to oxidative and metabolic stress than wild-type (WT) myocytes. Cellular ATP levels and mitochondrial respiration rates, as well as the levels of mitochondrial marker proteins, were lower in Ncs1-/- myocytes. Although oxidative stress elevated mitochondrial proton leak, which exerts a protective effect by inhibiting the production of reactive oxygen species in WT myocytes, this response was considerably diminished in Ncs1-/- cardiomyocytes, and this would be a major reason for cell death. Consistently, H2O2-induced loss of mitochondrial membrane potential, a critical early event in cell death, was accelerated in Ncs1-/- myocytes. Furthermore, NCS-1 was upregulated in hearts subjected to ischemia-reperfusion, and ischemia-reperfusion injury was more severe in Ncs1-/- hearts. Activation of stress-induced Ca2+-dependent survival pathways, such as Akt and PGC-1α (which promotes mitochondrial biogenesis and function), was diminished in Ncs1-/- hearts. Overall, these data demonstrate that NCS-1 contributes to stress tolerance in cardiomyocytes at least in part by activating certain Ca2+-dependent survival pathways that promote mitochondrial biosynthesis/function and detoxification pathways.
Collapse
Affiliation(s)
- Tomoe Y Nakamura
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Fujishirodai 5-7-1, Suita, Osaka 565-8565, Japan.
| | - Shu Nakao
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Fujishirodai 5-7-1, Suita, Osaka 565-8565, Japan
| | - Shigeo Wakabayashi
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Fujishirodai 5-7-1, Suita, Osaka 565-8565, Japan; Department of Cardiac Physiology, National Cerebral and Cardiovascular Center Research Institute, Fujishirodai 5-7-1, Suita, Osaka 565-8565, Japan
| |
Collapse
|
30
|
Pandalaneni S, Karuppiah V, Saleem M, Haynes LP, Burgoyne RD, Mayans O, Derrick JP, Lian LY. Neuronal Calcium Sensor-1 Binds the D2 Dopamine Receptor and G-protein-coupled Receptor Kinase 1 (GRK1) Peptides Using Different Modes of Interactions. J Biol Chem 2015; 290:18744-56. [PMID: 25979333 PMCID: PMC4513130 DOI: 10.1074/jbc.m114.627059] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Indexed: 11/25/2022] Open
Abstract
Neuronal calcium sensor-1 (NCS-1) is the primordial member of the neuronal calcium sensor family of EF-hand Ca2+-binding proteins. It interacts with both the G-protein-coupled receptor (GPCR) dopamine D2 receptor (D2R), regulating its internalization and surface expression, and the cognate kinases GRK1 and GRK2. Determination of the crystal structures of Ca2+/NCS-1 alone and in complex with peptides derived from D2R and GRK1 reveals that the differential recognition is facilitated by the conformational flexibility of the C-lobe-binding site. We find that two copies of the D2R peptide bind within the hydrophobic crevice on Ca2+/NCS-1, but only one copy of the GRK1 peptide binds. The different binding modes are made possible by the C-lobe-binding site of NCS-1, which adopts alternative conformations in each complex. C-terminal residues Ser-178–Val-190 act in concert with the flexible EF3/EF4 loop region to effectively form different peptide-binding sites. In the Ca2+/NCS-1·D2R peptide complex, the C-terminal region adopts a 310 helix-turn-310 helix, whereas in the GRK1 peptide complex it forms an α-helix. Removal of Ser-178–Val-190 generated a C-terminal truncation mutant that formed a dimer, indicating that the NCS-1 C-terminal region prevents NCS-1 oligomerization. We propose that the flexible nature of the C-terminal region is essential to allow it to modulate its protein-binding sites and adapt its conformation to accommodate both ligands. This appears to be driven by the variability of the conformation of the C-lobe-binding site, which has ramifications for the target specificity and diversity of NCS-1.
Collapse
Affiliation(s)
- Sravan Pandalaneni
- From the NMR Centre for Structural Biology, Institute of Integrative Biology, and
| | - Vijaykumar Karuppiah
- From the NMR Centre for Structural Biology, Institute of Integrative Biology, and the Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, and
| | - Muhammad Saleem
- the Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, and
| | - Lee P Haynes
- the Physiological Laboratory, Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool L37 4BY, United Kingdom
| | - Robert D Burgoyne
- the Physiological Laboratory, Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool L37 4BY, United Kingdom
| | - Olga Mayans
- Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB
| | - Jeremy P Derrick
- the Faculty of Life Sciences, University of Manchester, Manchester M13 9PT, and
| | - Lu-Yun Lian
- From the NMR Centre for Structural Biology, Institute of Integrative Biology, and
| |
Collapse
|
31
|
Nakao S, Wakabayashi S, Nakamura TY. Stimulus-dependent regulation of nuclear Ca2+ signaling in cardiomyocytes: a role of neuronal calcium sensor-1. PLoS One 2015; 10:e0125050. [PMID: 25897502 PMCID: PMC4405540 DOI: 10.1371/journal.pone.0125050] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 03/14/2015] [Indexed: 11/18/2022] Open
Abstract
In cardiomyocytes, intracellular calcium (Ca2+) transients are elicited by electrical and receptor stimulations, leading to muscle contraction and gene expression, respectively. Although such elevations of Ca2+levels ([Ca2+]) also occur in the nucleus, the precise mechanism of nuclear [Ca2+] regulation during different kinds of stimuli, and its relationship with cytoplasmic [Ca2+] regulation are not fully understood. To address these issues, we used a new region-specific fluorescent protein-based Ca2+ indicator, GECO, together with the conventional probe Fluo-4 AM. We confirmed that nuclear Ca2+ transients were elicited by both electrical and receptor stimulations in neonatal mouse ventricular myocytes. Kinetic analysis revealed that electrical stimulation-elicited nuclear Ca2+ transients are slower than cytoplasmic Ca2+ transients, and chelating cytoplasmic Ca2+ abolished nuclear Ca2+ transients, suggesting that nuclear Ca2+ are mainly derived from the cytoplasm during electrical stimulation. On the other hand, receptor stimulation such as with insulin-like growth factor-1 (IGF-1) preferentially increased nuclear [Ca2+] compared to cytoplasmic [Ca2+]. Experiments using inhibitors revealed that electrical and receptor stimulation-elicited Ca2+ transients were mainly mediated by ryanodine receptors and inositol 1,4,5-trisphosphate receptors (IP3Rs), respectively, suggesting different mechanisms for the two signals. Furthermore, IGF-1-elicited nuclear Ca2+ transient amplitude was significantly lower in myocytes lacking neuronal Ca2+ sensor-1 (NCS-1), a Ca2+ binding protein implicated in IP3R-mediated pathway in the heart. Moreover, IGF-1 strengthened the interaction between NCS-1 and IP3R. These results suggest a novel mechanism for receptor stimulation-induced nuclear [Ca2+] regulation mediated by IP3R and NCS-1 that may further fine-tune cardiac Ca2+ signal regulation.
Collapse
MESH Headings
- Aniline Compounds
- Animals
- Animals, Newborn
- Calcium/metabolism
- Calcium Signaling
- Cell Nucleus/drug effects
- Cell Nucleus/metabolism
- Cytoplasm/drug effects
- Cytoplasm/metabolism
- Electric Stimulation
- Fluorescent Dyes
- Gene Expression Regulation
- Heart Ventricles/cytology
- Heart Ventricles/drug effects
- Heart Ventricles/metabolism
- Inositol 1,4,5-Trisphosphate Receptors/genetics
- Inositol 1,4,5-Trisphosphate Receptors/metabolism
- Insulin-Like Growth Factor I/pharmacology
- Ion Transport
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Myocytes, Cardiac/cytology
- Myocytes, Cardiac/drug effects
- Myocytes, Cardiac/metabolism
- Neuronal Calcium-Sensor Proteins/deficiency
- Neuronal Calcium-Sensor Proteins/genetics
- Neuropeptides/deficiency
- Neuropeptides/genetics
- Primary Cell Culture
- Ryanodine Receptor Calcium Release Channel/genetics
- Ryanodine Receptor Calcium Release Channel/metabolism
- Xanthenes
Collapse
Affiliation(s)
- Shu Nakao
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
| | - Shigeo Wakabayashi
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
- Department of Cardiac Physiology, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
| | - Tomoe Y. Nakamura
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center, Suita, Osaka, Japan
- * E-mail:
| |
Collapse
|
32
|
Barbosa DJ, Capela JP, de Lourdes Bastos M, Carvalho F. In vitro models for neurotoxicology research. Toxicol Res (Camb) 2015; 4:801-842. [DOI: 10.1039/c4tx00043a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023] Open
Abstract
The nervous system has a highly complex organization, including many cell types with multiple functions, with an intricate anatomy and unique structural and functional characteristics; the study of its (dys)functionality following exposure to xenobiotics, neurotoxicology, constitutes an important issue in neurosciences.
Collapse
Affiliation(s)
- Daniel José Barbosa
- REQUIMTE (Rede de Química e Tecnologia)
- Laboratório de Toxicologia
- Departamento de Ciências Biológicas
- Faculdade de Farmácia
- Universidade do Porto
| | - João Paulo Capela
- REQUIMTE (Rede de Química e Tecnologia)
- Laboratório de Toxicologia
- Departamento de Ciências Biológicas
- Faculdade de Farmácia
- Universidade do Porto
| | - Maria de Lourdes Bastos
- REQUIMTE (Rede de Química e Tecnologia)
- Laboratório de Toxicologia
- Departamento de Ciências Biológicas
- Faculdade de Farmácia
- Universidade do Porto
| | - Félix Carvalho
- REQUIMTE (Rede de Química e Tecnologia)
- Laboratório de Toxicologia
- Departamento de Ciências Biológicas
- Faculdade de Farmácia
- Universidade do Porto
| |
Collapse
|
33
|
Yukinaga H, Shionyu C, Hirata E, Ui-Tei K, Nagashima T, Kondo S, Okada-Hatakeyama M, Naoki H, Matsuda M. Fluctuation of Rac1 activity is associated with the phenotypic and transcriptional heterogeneity of glioma cells. J Cell Sci 2014; 127:1805-15. [PMID: 24522191 DOI: 10.1242/jcs.139733] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Phenotypic heterogeneity of cancer cells is caused not only by genetic and epigenetic alterations but also by stochastic variation of intracellular signaling molecules. Using cells that stably express Förster resonance energy transfer (FRET) biosensors, we show here a correlation between a temporal fluctuation in the activity of Rac1 and the invasive properties of C6 glioma cells. By using long-term time-lapse imaging, we found that Rac1 activity in C6 glioma cells fluctuated over a timescale that was substantially longer than that of the replication cycle. Because the relative level of Rac1 activity in each cell was unaffected by a suspension-adhesion procedure, we were able to sort C6 glioma cells according to the levels of Rac1 activity, yielding Rac1(high) and Rac1(low) cells. The Rac1(high) cells invaded more efficiently than did Rac1(low) cells in a Matrigel invasion assay. We assessed the transcriptional profiles of Rac1(high) and Rac1(low) cells and performed gene ontology analysis. Among the 14 genes that were most associated with the term 'membrane' (membrane-related genes) in Rac1(high) cells, we identified four genes that were associated with glioma invasion and Rac1 activity by using siRNA knockdown experiments. Among the transcription factors upregulated in Rac1(high) cells, Egr2 was found to positively regulate expression of the four membrane-related invasion-associated genes. The identified signaling network might cause the fluctuations in Rac1 activity and the heterogeneity in the invasive capacity of glioma cells.
Collapse
Affiliation(s)
- Hiroko Yukinaga
- Department of Pathology and Biology of Diseases, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
34
|
Martin VM, Johnson JR, Haynes LP, Barclay JW, Burgoyne RD. Identification of key structural elements for neuronal calcium sensor-1 function in the regulation of the temperature-dependency of locomotion in C. elegans. Mol Brain 2013; 6:39. [PMID: 23981466 PMCID: PMC3765893 DOI: 10.1186/1756-6606-6-39] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 08/24/2013] [Indexed: 11/10/2022] Open
Abstract
Background Intracellular Ca2+ regulates many aspects of neuronal function through Ca2+ binding to EF hand-containing Ca2+ sensors that in turn bind target proteins to regulate their function. Amongst the sensors are the neuronal calcium sensor (NCS) family of proteins that are involved in multiple neuronal signalling pathways. Each NCS protein has specific and overlapping targets and physiological functions and specificity is likely to be determined by structural features within the proteins. Common to the NCS proteins is the exposure of a hydrophobic groove, allowing target binding in the Ca2+-loaded form. Structural analysis of NCS protein complexes with target peptides has indicated common and distinct aspects of target protein interaction. Two key differences between NCS proteins are the size of the hydrophobic groove that is exposed for interaction and the role of their non-conserved C-terminal tails. Results We characterised the role of NCS-1 in a temperature-dependent locomotion assay in C. elegans and identified a distinct phenotype in the ncs-1 null in which the worms do not show reduced locomotion at actually elevated temperature. Using rescue of this phenotype we showed that NCS-1 functions in AIY neurons. Structure/function analysis introducing single or double mutations within the hydrophobic groove based on information from characterised target complexes established that both N- and C-terminal pockets of the groove are functionally important and that deletion of the C-terminal tail of NCS-1 did not impair its ability to rescue. Conclusions The current work has allowed physiological assessment of suggestions from structural studies on the key structural features that underlie the interaction of NCS-1 with its target proteins. The results are consistent with the notion that full length of the hydrophobic groove is required for the regulatory interactions underlying NCS-1 function whereas the C-terminal tail of NCS-1 is not essential. This has allowed discrimination between two potential modes of interaction of NCS-1 with its targets.
Collapse
Affiliation(s)
- Victoria M Martin
- Department of Cellular and Molecular Physiology, The Physiological Laboratory, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3BX, UK.
| | | | | | | | | |
Collapse
|
35
|
Abstract
Calcium (Ca(2+)) is an important intracellular messenger, regulating myocyte contraction via excitation-contraction (EC) coupling and gene transcription underlying hypertrophy in the heart. Although the mechanisms of EC coupling in the immature heart are believed to be different from those in the adult heart because of the structural immaturity of the sarcoplasmic reticulum in the young heart, the details of these mechanisms are not completely understood. Neuronal Ca(2+) sensor-1 (NCS-1) is an EF-hand Ca(2+)-binding protein that is highly expressed in young hearts; however, little is known about its cardiac functions. In this review, we summarize our recent findings indicating that NCS-1 acts as a novel regulator enhancing Ca(2+) signals in the heart and hence promoting contraction in the immature heart and hypertrophy in the adult heart. Possible signal transduction pathways are also discussed.
Collapse
Affiliation(s)
- Tomoe Y Nakamura
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center, Osaka 565-8565, Japan.
| | | |
Collapse
|
36
|
Protection Effect of GDNF and Neurturin on Photosensitized Crayfish Neurons and Glial Cells. J Mol Neurosci 2012; 49:480-90. [DOI: 10.1007/s12031-012-9858-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2012] [Accepted: 07/12/2012] [Indexed: 10/28/2022]
|
37
|
Williams TA, Monticone S, Crudo V, Warth R, Veglio F, Mulatero P. Visinin-Like 1 Is Upregulated in Aldosterone-Producing Adenomas With
KCNJ5
Mutations and Protects From Calcium-Induced Apoptosis. Hypertension 2012; 59:833-9. [DOI: 10.1161/hypertensionaha.111.188532] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Visinin-like 1 (
VSNL1
) is upregulated in aldosterone-producing adenomas (APAs) compared with normal adrenals. We demonstrate that
VSNL1
overexpression in adrenocortical carcinoma cells (NCI H295R) upregulates basal and angiotensin II–stimulated
CYP11B2
gene expression 3.2- and 1.5-fold, respectively. Conversely, silencing
VSNL1
by RNA interference decreases angiotensin II–stimulated
CYP11B2
expression and aldosterone secretion by 41.0% and 34.5%, respectively. Mutations in the potassium channel
KCNJ5
have been identified in APAs that result in sodium influx and membrane depolarization and are postulated to result in calcium influx in adrenal glomerulosa cells.
VSNL1
and
CYP11B2
are 8.1- and 6.0-fold more highly expressed, respectively, in APAs harboring
KCNJ5
mutations compared with those without, and the upregulation of
VSNL1
in these APAs accounts for the overexpression of
VSNL1
in the total APA sample set compared with normal adrenals. Silencing
VSNL1
in H295R cells renders them sensitive to ionomycin-induced apoptosis, indicating that
VSNL1
protects these cells against calcium-induced cell death. Concomitant expression of mutated KCNJ5 (G151R) and silencing
VSNL1
results in apoptosis of H295R cells, an effect that is blocked by nifedipine and is absent using a control small-interfering RNA or when wild-type KCNJ5 is expressed and
VSNL1
is silenced. These data demonstrate that
VSNL1
plays a dual function in vitro in the regulation of
CYP11B2
gene expression and in the inhibition of calcium-induced apoptosis. In addition,
VSNL1
may play a role in the pathophysiology of APAs harboring mutations in the potassium channel
KCNJ5
via its antiapoptotic function in response to calcium cytotoxicity and its effect on aldosterone production.
Collapse
Affiliation(s)
- Tracy Ann Williams
- From the Division of Internal Medicine and Hypertension (T.A.W., S.M., V.C., F.V., P.M.), Department of Medicine and Experimental Oncology, University of Torino, Torino, Italy; Medical Cell Biology (R.W.), University of Regensburg, Regensburg, Germany
| | - Silvia Monticone
- From the Division of Internal Medicine and Hypertension (T.A.W., S.M., V.C., F.V., P.M.), Department of Medicine and Experimental Oncology, University of Torino, Torino, Italy; Medical Cell Biology (R.W.), University of Regensburg, Regensburg, Germany
| | - Valentina Crudo
- From the Division of Internal Medicine and Hypertension (T.A.W., S.M., V.C., F.V., P.M.), Department of Medicine and Experimental Oncology, University of Torino, Torino, Italy; Medical Cell Biology (R.W.), University of Regensburg, Regensburg, Germany
| | - Richard Warth
- From the Division of Internal Medicine and Hypertension (T.A.W., S.M., V.C., F.V., P.M.), Department of Medicine and Experimental Oncology, University of Torino, Torino, Italy; Medical Cell Biology (R.W.), University of Regensburg, Regensburg, Germany
| | - Franco Veglio
- From the Division of Internal Medicine and Hypertension (T.A.W., S.M., V.C., F.V., P.M.), Department of Medicine and Experimental Oncology, University of Torino, Torino, Italy; Medical Cell Biology (R.W.), University of Regensburg, Regensburg, Germany
| | - Paolo Mulatero
- From the Division of Internal Medicine and Hypertension (T.A.W., S.M., V.C., F.V., P.M.), Department of Medicine and Experimental Oncology, University of Torino, Torino, Italy; Medical Cell Biology (R.W.), University of Regensburg, Regensburg, Germany
| |
Collapse
|
38
|
Dason JS, Romero-Pozuelo J, Atwood HL, Ferrús A. Multiple roles for frequenin/NCS-1 in synaptic function and development. Mol Neurobiol 2012; 45:388-402. [PMID: 22396213 DOI: 10.1007/s12035-012-8250-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Accepted: 02/20/2012] [Indexed: 11/26/2022]
Abstract
The calcium-binding protein frequenin (Frq), discovered in the fruit fly Drosophila, and its mammalian homologue neuronal calcium sensor 1 (NCS-1) have been reported to affect several aspects of synaptic transmission, including basal levels of neurotransmission and short- and long-term synaptic plasticities. However, discrepant reports leave doubts about the functional roles of these conserved proteins. In this review, we attempt to resolve some of these seemingly contradictory reports. We discuss how stimulation protocols, sources of calcium (voltage-gated channels versus internal stores), and expression patterns (presynaptic versus postsynaptic) of Frq may result in the activation of various protein targets, leading to different synaptic effects. In addition, the potential interactions of Frq's C-terminal and N-terminal domains with other proteins are discussed. Frq also has a role in regulating neurite outgrowth, axonal regeneration, and synaptic development. We examine whether the effects of Frq on neurotransmitter release and neurite outgrowth are distinct or interrelated through homeostatic mechanisms. Learning and memory are affected by manipulations of Frq probably through changes in synaptic transmission and neurite outgrowth, raising the possibility that Frq may be implicated in human pathological conditions, including schizophrenia, bipolar disorder, and X-linked mental retardation.
Collapse
Affiliation(s)
- Jeffrey S Dason
- Department of Physiology, University of Toronto, Toronto, ON, Canada, M5S 1A8.
| | | | | | | |
Collapse
|
39
|
Lian LY, Pandalaneni SR, Patel P, McCue HV, Haynes LP, Burgoyne RD. Characterisation of the interaction of the C-terminus of the dopamine D2 receptor with neuronal calcium sensor-1. PLoS One 2011; 6:e27779. [PMID: 22114693 PMCID: PMC3218054 DOI: 10.1371/journal.pone.0027779] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Accepted: 10/25/2011] [Indexed: 11/19/2022] Open
Abstract
NCS-1 is a member of the neuronal calcium sensor (NCS) family of EF-hand Ca(2+) binding proteins which has been implicated in several physiological functions including regulation of neurotransmitter release, membrane traffic, voltage gated Ca(2+) channels, neuronal development, synaptic plasticity, and learning. NCS-1 binds to the dopamine D2 receptor, potentially affecting its internalisation and controlling dopamine D2 receptor surface expression. The D2 receptor binds NCS-1 via a short 16-residue cytoplasmic C-terminal tail. We have used NMR and fluorescence spectroscopy to characterise the interactions between the NCS-1/Ca(2+) and D2 peptide. The data show that NCS-1 binds D2 peptide with a K(d) of ∼14.3 µM and stoichiometry of peptide binding to NCS-1 of 2:1. NMR chemical shift mapping confirms that D2 peptide binds to the large, solvent-exposed hydrophobic groove, on one face of the NCS-1 molecule, with residues affected by the presence of the peptide spanning both the N and C-terminal portions of the protein. The NMR and mutagenesis data further show that movement of the C-terminal helix 11 of NCS-1 to fully expose the hydrophobic groove is important for D2 peptide binding. Molecular docking using restraints derived from the NMR chemical shift data, together with the experimentally-derived stoichiometry, produced a model of the complex between NCS-1 and the dopamine receptor, in which two molecules of the receptor are able to simultaneously bind to the NCS-1 monomer.
Collapse
Affiliation(s)
- Lu-Yun Lian
- NMR Centre for Structural Biology, Institute of Integrative Biology, University of Liverpool, Liverpool, United Kingdom
- * E-mail: (LYL); (RDB)
| | - Sravan R. Pandalaneni
- NMR Centre for Structural Biology, Institute of Integrative Biology, University of Liverpool, Liverpool, United Kingdom
| | - Pryank Patel
- NMR Centre for Structural Biology, Institute of Integrative Biology, University of Liverpool, Liverpool, United Kingdom
| | - Hannah V. McCue
- The Physiological Laboratory, Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Lee P. Haynes
- The Physiological Laboratory, Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom
| | - Robert D. Burgoyne
- The Physiological Laboratory, Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom
- * E-mail: (LYL); (RDB)
| |
Collapse
|
40
|
Woll MP, De Cotiis DA, Bewley MC, Tacelosky DM, Levenson R, Flanagan JM. Interaction between the D2 dopamine receptor and neuronal calcium sensor-1 analyzed by fluorescence anisotropy. Biochemistry 2011; 50:8780-91. [PMID: 21875085 DOI: 10.1021/bi200637e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Neuronal calcium sensor-1 (NCS-1) is a small calcium binding protein that plays a key role in the internalization and desensitization of activated D2 dopamine receptors (D2Rs). Here, we have used fluorescence anisotropy (FA) and a panel of NCS-1 EF-hand variants to interrogate the interaction between the D2R and NCS-1. Our data are consistent with the following conclusions. (1) FA titration experiments indicate that at low D2R peptide concentrations calcium-loaded NCS-1 binds to the D2R peptide in a monomeric form. At high D2R peptide concentrations, the FA titration data are best fit by a model in which the D2R peptide binds two NCS-1 monomers sequentially in a cooperative fashion. (2) Competition FA experiments in which unlabeled D2R peptide was used to compete with labeled peptide for binding to NCS-1 shifted titration curves to higher NCS-1 concentrations, suggesting that the binding of NCS-1 to the D2R is highly specific and that binding occurs in a cooperative fashion. (3) N-Terminally myristoylated NCS-1 dimerizes in a calcium-dependent manner. (4) Co-immunoprecipitation experiments in HEK-293 confirm that NCS-1 can oligomerize in cell lysates and that oligomerization is dependent on calcium binding and requires functionally intact EF-hand domains. (5) Ca(2+)/Mg(2+) FA titration experiments revealed that NCS-1 EF-hands 2-4 (EF2-4) contributed to binding with the D2R peptide. EF2 appears to have the highest affinity for Ca(2+), and occupancy of this site is sufficient to promote high-affinity binding of the NCS-1 monomer to the D2R peptide. Magnesium ions may serve as a physiological cofactor with calcium for NCS-1-D2R binding. Finally, we propose a structural model that predicts that the D2R peptide binds to the first 60 residues of NCS-1. Together, our results support the possibility of using FA to screen for small molecule drugs that can specifically block the interaction between the D2R and NCS-1.
Collapse
Affiliation(s)
- Matthew P Woll
- Department of Pharmacology, Pennsylvania State University College of Medicine, Hershey, Pennsylvania 17033, USA
| | | | | | | | | | | |
Collapse
|
41
|
Nakamura TY, Jeromin A, Mikoshiba K, Wakabayashi S. Neuronal Calcium Sensor-1 Promotes Immature Heart Function and Hypertrophy by Enhancing Ca
2+
Signals. Circ Res 2011; 109:512-23. [DOI: 10.1161/circresaha.111.248864] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Rationale:
Neuronal calcium sensor-1 (NCS-1) regulates various neuronal functions. Although it is expressed in the heart, very little is known about its cardiac functions.
Objective:
This study aimed to identify the physiological and pathological roles of NCS-1 in the heart.
Methods and Results:
We characterized the cardiac functions of knockout mice (
Ncs1
−/−
) and identified NCS-1 as a novel regulator of cardiac Ca
2+
signaling, specifically in immature and hypertrophic hearts. NCS-1 was highly expressed in young hearts, and its deletion decreased survival and contractile function in young mice. Intracellular Ca
2+
levels and sarcoplasmic reticulum Ca
2+
content were significantly lower in
Ncs1
−/−
myocytes than in wild-type cells. This was due to reduced Ca
2+
/calmodulin-dependent protein kinase II (CaMKII) activity in
Ncs1
−/−
myocytes, which led to reduced sarcoplasmic reticulum Ca
2+
uptake and release. NCS-1 physically and functionally interacted with inositol 1,4,5-trisphosphate receptors (IP
3
Rs) in the heart. In addition, IP
3
R stimulation resulted in phosphorylation of CaMKII-δ, which was enhanced by NCS-1 overexpression. These results suggest that a functional link exists between NCS-1, IP
3
R function, and CaMKII activation that may affect global Ca
2+
signals in the immature heart. Furthermore, NCS-1 was upregulated in hypertrophic hearts, and hormone-induced hypertrophy was largely prevented in
Ncs1
−/−
hearts. Inhibitors of IP
3
Rs, CaMKII, and calcineurin all prevented NCS-1–induced hypertrophy, which suggests the involvement of these pathways.
Conclusions:
NCS-1 is an important regulator of immature heart function and hypertrophy, and it functions in part by promoting IP
3
R function, followed by CaMKII-dependent signal activation.
Collapse
Affiliation(s)
- Tomoe Y. Nakamura
- From the Department of Molecular Physiology (T.Y.N., S.W.), National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan; Banyan Biomarkers, Inc (A.J.), Alachua, FL; and Laboratory for Developmental Neurobiology (K.M.), RIKEN Brain Science Institute, Saitama, Japan
| | - Andreas Jeromin
- From the Department of Molecular Physiology (T.Y.N., S.W.), National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan; Banyan Biomarkers, Inc (A.J.), Alachua, FL; and Laboratory for Developmental Neurobiology (K.M.), RIKEN Brain Science Institute, Saitama, Japan
| | - Katsuhiko Mikoshiba
- From the Department of Molecular Physiology (T.Y.N., S.W.), National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan; Banyan Biomarkers, Inc (A.J.), Alachua, FL; and Laboratory for Developmental Neurobiology (K.M.), RIKEN Brain Science Institute, Saitama, Japan
| | - Shigeo Wakabayashi
- From the Department of Molecular Physiology (T.Y.N., S.W.), National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan; Banyan Biomarkers, Inc (A.J.), Alachua, FL; and Laboratory for Developmental Neurobiology (K.M.), RIKEN Brain Science Institute, Saitama, Japan
| |
Collapse
|
42
|
Weiss JL, Hui H, Burgoyne RD. Neuronal calcium sensor-1 regulation of calcium channels, secretion, and neuronal outgrowth. Cell Mol Neurobiol 2010; 30:1283-92. [PMID: 21104311 DOI: 10.1007/s10571-010-9588-7] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2010] [Accepted: 09/02/2010] [Indexed: 12/01/2022]
Abstract
Calcium (Ca(2+)) is an important intracellular messenger underlying cell physiology. Ca(2+) channels are the main entry route for Ca(2+) into excitable cells, and regulate processes such as neurotransmitter release and neuronal outgrowth. Neuronal Calcium Sensor-1 (NCS-1) is a member of the Calmodulin superfamily of EF-hand Ca(2+) sensing proteins residing in the subfamily of NCS proteins. NCS-1 was originally discovered in Drosophila as an overexpression mutant (Frequenin), having an increased frequency of Ca(2+)-evoked neurotransmission. NCS-1 is N-terminally myristoylated, can bind intracellular membranes, and has a Ca(2+) affinity of 0.3 μM. Over 10 years ago it was discovered that NCS-1 overexpression enhances Ca(2+)-evoked secretion in bovine adrenal chromaffin cells. The mechanism was unclear, but there was no apparent direct effect on the exocytotic machinery. It was revealed, again in chromaffin cells, that NCS-1 regulates voltage-gated Ca(2+) channels (Cavs) in G-Protein Coupled Receptor (GPCR) signaling pathways. This work in chromaffin cells highlighted NCS-1 as an important modulator of neurotransmission. NCS-1 has since been shown to regulate and/or directly interact with many proteins including Cavs (P/Q, N, and L), TRPC1/5 channels, GPCRs, IP3R, and PI4 kinase type IIIβ. NCS-1 also affects neuronal outgrowth having roles in learning and memory affecting both short- and long-term synaptic plasticity. It is not known if NCS-1 affects neurotransmission and synaptic plasticity via its effect on PIP2 levels, and/or via a direct interaction with Ca(2+) channels or their signaling complexes. This review gives a historical account of NCS-1 function, examining contributions from chromaffin cells, PC12 cells and other models, to describe how NCS-1's regulation of Ca(2+) channels allows it to exert its physiological effects.
Collapse
Affiliation(s)
- Jamie L Weiss
- Department of Biology, William Paterson University, 300 Pompton Road, Wayne, NJ 07470, USA.
| | | | | |
Collapse
|
43
|
Souza BR, Torres KCL, Miranda DM, Motta BS, Caetano FS, Rosa DVF, Souza RP, Giovani A, Carneiro DS, Guimarães MM, Martins-Silva C, Reis HJ, Gomez MV, Jeromin A, Romano-Silva MA. Downregulation of the cAMP/PKA pathway in PC12 cells overexpressing NCS-1. Cell Mol Neurobiol 2010; 31:135-43. [PMID: 20838877 DOI: 10.1007/s10571-010-9562-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2010] [Accepted: 08/28/2010] [Indexed: 10/19/2022]
Abstract
It is well known that dopamine imbalances are associated with many psychiatric disorders and that the dopaminergic receptor D₂ is the main target of antipsychotics. Recently it was shown that levels of two proteins implicated in dopaminergic signaling, Neuronal calcium sensor-1 (NCS-1) and DARPP-32, are altered in the prefrontal cortex (PFC) of both schizophrenic and bipolar disorder patients. NCS-1, which inhibits D₂ internalization, is upregulated in the PFC of both patients. DARPP-32, which is a downstream effector of dopamine signaling, integrates the pathways of several neurotransmitters and is downregulated in the PFC of both patients. Here, we used PC12 cells stably overexpressing NCS-1 (PC12-NCS-1 cells) to address the function of this protein in DARPP-32 signaling pathway in vitro. PC12-NCS-1 cells displayed downregulation of the cAMP/PKA pathway, with decreased levels of cAMP and phosphorylation of CREB at Ser133. We also observed decreased levels of total and phosphorylated DARPP-32 at Thr34. However, these cells did not show alterations in the levels of D₂ and phosphorylation of DARPP-32 at Thr75. These results indicate that NCS-1 modulates PKA/cAMP signaling pathway. Identification of the cellular mechanisms linking NCS-1 and DARPP-32 may help in the understanding the signaling machinery with potential to be turned into targets for the treatment of schizophrenia and other debilitating psychiatric disorders.
Collapse
Affiliation(s)
- Bruno R Souza
- Departamento de Saúde Mental, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Yip PK, Wong LF, Sears TA, Yáñez-Muñoz RJ, McMahon SB. Cortical overexpression of neuronal calcium sensor-1 induces functional plasticity in spinal cord following unilateral pyramidal tract injury in rat. PLoS Biol 2010; 8:e1000399. [PMID: 20585375 PMCID: PMC2889931 DOI: 10.1371/journal.pbio.1000399] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2009] [Accepted: 05/12/2010] [Indexed: 11/18/2022] Open
Abstract
Overexpression of neuronal calcium sensor 1 in cortical neurons can help restore axonal plasticity and regeneration following axonal injury in adult rats, and can also improve behavioral function. Following trauma of the adult brain or spinal cord the injured axons of central neurons fail to regenerate or if intact display only limited anatomical plasticity through sprouting. Adult cortical neurons forming the corticospinal tract (CST) normally have low levels of the neuronal calcium sensor-1 (NCS1) protein. In primary cultured adult cortical neurons, the lentivector-induced overexpression of NCS1 induces neurite sprouting associated with increased phospho-Akt levels. When the PI3K/Akt signalling pathway was pharmacologically inhibited the NCS1-induced neurite sprouting was abolished. The overexpression of NCS1 in uninjured corticospinal neurons exhibited axonal sprouting across the midline into the CST-denervated side of the spinal cord following unilateral pyramidotomy. Improved forelimb function was demonstrated behaviourally and electrophysiologically. In injured corticospinal neurons, overexpression of NCS1 induced axonal sprouting and regeneration and also neuroprotection. These findings demonstrate that increasing the levels of intracellular NCS1 in injured and uninjured central neurons enhances their intrinsic anatomical plasticity within the injured adult central nervous system. Following trauma to the central nervous system (brain or spinal cord), neurons show very little capacity to re-grow their axons, which can lead to a permanent loss of function in those regions. In this study, we show that this failure of axon re-growth is associated with low intracellular levels of a small molecule called neuronal calcium sensor-1 (NCS1). We modified a non-replicating virus in two ways so as to increase the level of NCS1 in neurons while simultaneously labelling them with a green fluorescent protein, which allowed us to track neuronal growth. Using this virus to increase the level of NCS1 in a particular group of neurons that communicate between the brain and spinal cord, we showed that new axonal growth occurred in the spinal cord with or without injury to the neurons. Electrophysiological assessments demonstrated that these new processes formed functional connections in the spinal cord, and behavioural experiments revealed that this recovery also helped the animals move their limbs more effectively. Furthermore, an increase in NCS1 protected these neurons, such that fewer of them died after the injury. These findings demonstrate that increasing the intracellular levels of NCS1 in neurons can aid in the recovery from central nervous system injury, and can help improve behavioural function.
Collapse
Affiliation(s)
- Ping K Yip
- Neurorestoration Group, Wolfson CARD, King's College London, Guy's Campus, London, United Kingdom.
| | | | | | | | | |
Collapse
|
45
|
Handley MTW, Lian LY, Haynes LP, Burgoyne RD. Structural and functional deficits in a neuronal calcium sensor-1 mutant identified in a case of autistic spectrum disorder. PLoS One 2010; 5:e10534. [PMID: 20479890 PMCID: PMC2866544 DOI: 10.1371/journal.pone.0010534] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2010] [Accepted: 04/15/2010] [Indexed: 11/18/2022] Open
Abstract
Neuronal calcium sensor-1 (NCS-1) is a Ca(2+) sensor protein that has been implicated in the regulation of various aspects of neuronal development and neurotransmission. It exerts its effects through interactions with a range of target proteins one of which is interleukin receptor accessory protein like-1 (IL1RAPL1) protein. Mutations in IL1RAPL1 have recently been associated with autism spectrum disorders and a missense mutation (R102Q) on NCS-1 has been found in one individual with autism. We have examined the effect of this mutation on the structure and function of NCS-1. From use of NMR spectroscopy, it appeared that the R102Q affected the structure of the protein particularly with an increase in the extent of conformational exchange in the C-terminus of the protein. Despite this change NCS-1(R102Q) did not show changes in its affinity for Ca(2+) or binding to IL1RAPL1 and its intracellular localisation was unaffected. Assessment of NCS-1 dynamics indicated that it could rapidly cycle between cytosolic and membrane pools and that the cycling onto the plasma membrane was specifically changed in NCS-1(R102Q) with the loss of a Ca(2+) -dependent component. From these data we speculate that impairment of the normal cycling of NCS-1 by the R102Q mutation could have subtle effects on neuronal signalling and physiology in the developing and adult brain.
Collapse
Affiliation(s)
- Mark T. W. Handley
- The Physiological Laboratory, School of Biomedical Sciences, University of Liverpool, Liverpool, United Kingdom
| | - Lu-Yun Lian
- School of Biological Sciences, University of Liverpool, Liverpool, United Kingdom
| | - Lee P. Haynes
- The Physiological Laboratory, School of Biomedical Sciences, University of Liverpool, Liverpool, United Kingdom
| | - Robert D. Burgoyne
- The Physiological Laboratory, School of Biomedical Sciences, University of Liverpool, Liverpool, United Kingdom
- * E-mail:
| |
Collapse
|
46
|
Burgoyne RD, Haynes LP. Neuronal calcium sensor proteins: emerging roles in membrane traffic and synaptic plasticity. F1000 BIOLOGY REPORTS 2010; 2. [PMID: 20948784 PMCID: PMC2948346 DOI: 10.3410/b2-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Ca2+ plays a crucial role in the regulation of neuronal function. Recent work has revealed important functions for two families of neuronally expressed Ca2+ sensor proteins. These include roles in membrane traffic and in alterations in synaptic plasticity underlying changes in behaviour.
Collapse
Affiliation(s)
- Robert D Burgoyne
- The Physiological Laboratory, School of Biomedical Sciences, University of Liverpool Crown Street, Liverpool, L69 3BX UK
| | | |
Collapse
|
47
|
Liu W, Zhou XW, Liu S, Hu K, Wang C, He Q, Li M. Calpain-truncated CRMP-3 and -4 contribute to potassium deprivation-induced apoptosis of cerebellar granule neurons. Proteomics 2009; 9:3712-28. [PMID: 19639589 DOI: 10.1002/pmic.200800979] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Increasing evidence shows that calpain-mediated proteolytic processing of a selective number of proteins plays an important role in neuronal apoptosis. Study of calpain-mediated cleavage events and related functions may contribute to a better understanding of neuronal apoptosis and neurodegenerative diseases. We, therefore, investigated the role of calpain substrates in potassium deprivation-induced apoptosis of cerebellar granule neurons (CGNs). Twelve previously known and seven novel candidates of calpain substrates were identified by 2-D DIGE and MALDI-TOF/TOF MS analysis. Further, the identified novel calpain substrates were validated by Western blot analysis. Moreover, we focused on the collapsin response mediator proteins (CRMP-1, -2, -3 and -4 isoforms) and found that CRMPs were proteolytically processed by calpain but not by caspase, both in vivo and in vitro. To clarify the properties of the calpain-mediated proteolysis of CRMPs, we constructed the deletion mutants of CRMPs for additional biochemical studies. In vitro cleavage assays revealed that CRMP-1, -2 and -4 were truncated by calpain at the C-terminus, whereas CRMP-3 was cleaved at the N-terminus. Finally, we assessed the role of CRMPs in the process of potassium deprivation-triggered neuronal apoptosis by overexpressing the truncated CRMPs in CGNs. Our data clearly showed that the truncated CRMP-3 and -4, but not CRMP-1 and -2, significantly induced neuronal apoptosis. These findings demonstrated that calpain-truncated CRMP-3 and -4 act as pro-apoptotic players when CGNs undergo apoptosis.
Collapse
Affiliation(s)
- Wei Liu
- Proteomics Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, PR China
| | | | | | | | | | | | | |
Collapse
|
48
|
Deas E, Plun-Favreau H, Wood NW. PINK1 function in health and disease. EMBO Mol Med 2009; 1:152-65. [PMID: 20049715 PMCID: PMC3378127 DOI: 10.1002/emmm.200900024] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2009] [Accepted: 05/04/2009] [Indexed: 01/05/2023] Open
Abstract
The role of mitochondria in sporadic Parkinson's disease (PD) has been debated for a little over 20 years since the description of complex I deficiency in the substantia nigra pars compacta (SNpc) of PD patients. However, the identification of recessive pathogenic mutations in the pink1 gene in familial PD cases firmly re-ignited interest in the pathophysiology of mitochondria in PD. PINK1 is a putative mitochondrial serine/threonine kinase, which protects cells against oxidative stress induced apoptosis. The mechanism by which this is achieved and the effect of the pathogenic mutations has been an area of intensive research over the past five years. Significant progress has been made and, in this review, we summarize the physiological roles that have been assigned to PINK1 and the potential mechanisms behind pathogenesis.
Collapse
Affiliation(s)
- Emma Deas
- Department of Molecular Neuroscience, UCL Institute of NeurologyQueen Square, London, WC1N 3BG, UK
| | | | - Nicholas W Wood
- †Corresponding authors: Tel: (+44) 207 837 3611 ex 4255; Fax: (+44) 207 278 5616 E-mail:
| |
Collapse
|
49
|
Expression of neuronal calcium sensor-1 (NCS-1) is decreased in leukocytes of schizophrenia and bipolar disorder patients. Prog Neuropsychopharmacol Biol Psychiatry 2009; 33:229-34. [PMID: 19091302 DOI: 10.1016/j.pnpbp.2008.11.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2008] [Revised: 11/10/2008] [Accepted: 11/11/2008] [Indexed: 02/07/2023]
Abstract
Schizophrenia (SCZ) and bipolar disorder (BPD) are severe illnesses representing an enormous social, familiar and individual burden that affect 1% of the population world-wide. Several evidences indicate abnormalities of the dopamine system in both SCZ and BPD. Neuronal calcium sensor-1 (NCS-1) is a protein that has many functions in neurotransmission such as inhibition of dopamine D(2) receptor desensitization, regulation of ionic channels and enhancement of exocytosis of neurotransmitters. In addition, NCS-1 protein expression and mRNA levels were found increased in pre-frontal cortex (PFC) of SCZ and BPD patients. NCS-1 expression in neural and neuroendocrine cells is well documented and, recently, it was shown that NCS-1 is also expressed in mast cells and neutrophils. NCS-1 has important functions in mast cells since it stimulates Fc epsilon RI-triggered exocytosis and the release of arachidonic acid metabolites. Then, due to the known close relation between the nervous and immune systems, we sought to investigate the NCS-1 expression in lymphocytes and monocytes (CD4+ T lymphocytes, CD56+ NK cells, CD19+ B lymphocytes and CD14+ monocytes) of SCZ and BPD patients. Using flow cytometry, our results have shown that NCS-1 expression was diminished in CD4+T lymphocytes, CD19+ B lymphocytes and CD14+ monocytes of BPD patients and also decreased in CD4+ T lymphocytes and CD56+ NK cells of SCZ patients. Results suggest that immune cells might be a cellular model for studies with SCZ and BPD patients considering NCS-1 functions. Efforts need to be done to investigate the motive of the decreased percentage of immune cells expressing NCS-1 in patients with SCZ and BPD.
Collapse
|
50
|
Lindgren N, Leak RK, Carlson KM, Smith AD, Zigmond MJ. Activation of the extracellular signal‐regulated kinases 1 and 2 by glial cell line‐derived neurotrophic factor and its relation to neuroprotection in a mouse model of Parkinson's disease. J Neurosci Res 2008; 86:2039-49. [DOI: 10.1002/jnr.21641] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|