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Ben Dhaou C, Terrié E, Déliot N, Harnois T, Cousin L, Arnault P, Constantin B, Moyse E, Coronas V. Neural stem cell self-renewal stimulation by store-operated calcium entries in adult mouse area postrema: influence of leptin. Front Cell Neurosci 2023; 17:1200360. [PMID: 37361995 PMCID: PMC10287973 DOI: 10.3389/fncel.2023.1200360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 05/17/2023] [Indexed: 06/28/2023] Open
Abstract
Neural stem cells (NSCs) persist in specific brain germinative niches and sustain neurogenesis throughout life in adult mammals. In addition to the two major stem cell niches in the subventricular zone and the hippocampal dentate gyrus, the area postrema located in the brainstem has been identified as a neurogenic zone as well. NSCs are regulated by signals from the microenvironment that adjust stem cell response to the needs of the organism. Evidence accumulated over the past decade indicates that Ca2+ channels play pivotal functions in NSC maintenance. In this study, we explored in area postrema NSCs the presence and roles of a subset of Ca2+ channels, the store-operated Ca2+ channels (SOCs) that have the capacity to transduce extracellular signals into Ca2+ signals. Our data show that NSCs derived from the area postrema express TRPC1 and Orai1, known to form SOCs, as well as their activator STIM1. Ca2+ imaging indicated that NSCs exhibit store-operated Ca2+ entries (SOCEs). Pharmacological blockade of SOCEs with SKF-96365, YM-58483 (also known as BTP2) or GSK-7975A resulted in decreased NSC proliferation and self-renewal, indicating a major role for SOCs in maintaining NSC activity within the area postrema. Furthermore, our results show that leptin, an adipose tissue-derived hormone whose ability to control energy homeostasis is dependent on the area postrema, decreased SOCEs and reduced self-renewal of NSCs in the area postrema. As aberrant SOC function has been linked to an increasing number of diseases, including brain disorders, our study opens new perspectives for NSCs in brain pathophysiology.
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Affiliation(s)
- Cyrine Ben Dhaou
- University of Tours, INRAe Centre Val-de-Loire UMR-85, CNRS UMR-1247, Physiologie de la Reproduction et Comportements, Nouzilly, France
| | - Elodie Terrié
- 4CS, Laboratory Channels and Connexins in Cancers and Cell Stemness, CNRS UMR 6041, University of Poitiers, Poitiers, France
| | - Nadine Déliot
- 4CS, Laboratory Channels and Connexins in Cancers and Cell Stemness, CNRS UMR 6041, University of Poitiers, Poitiers, France
| | - Thomas Harnois
- 4CS, Laboratory Channels and Connexins in Cancers and Cell Stemness, CNRS UMR 6041, University of Poitiers, Poitiers, France
| | - Laetitia Cousin
- 4CS, Laboratory Channels and Connexins in Cancers and Cell Stemness, CNRS UMR 6041, University of Poitiers, Poitiers, France
| | - Patricia Arnault
- 4CS, Laboratory Channels and Connexins in Cancers and Cell Stemness, CNRS UMR 6041, University of Poitiers, Poitiers, France
| | - Bruno Constantin
- 4CS, Laboratory Channels and Connexins in Cancers and Cell Stemness, CNRS UMR 6041, University of Poitiers, Poitiers, France
| | - Emmanuel Moyse
- University of Tours, INRAe Centre Val-de-Loire UMR-85, CNRS UMR-1247, Physiologie de la Reproduction et Comportements, Nouzilly, France
| | - Valérie Coronas
- 4CS, Laboratory Channels and Connexins in Cancers and Cell Stemness, CNRS UMR 6041, University of Poitiers, Poitiers, France
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Terrié E, Déliot N, Benzidane Y, Harnois T, Cousin L, Bois P, Oliver L, Arnault P, Vallette F, Constantin B, Coronas V. Store-Operated Calcium Channels Control Proliferation and Self-Renewal of Cancer Stem Cells from Glioblastoma. Cancers (Basel) 2021; 13:cancers13143428. [PMID: 34298643 PMCID: PMC8307764 DOI: 10.3390/cancers13143428] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/05/2021] [Accepted: 07/05/2021] [Indexed: 12/20/2022] Open
Abstract
Simple Summary Glioblastoma is a high-grade primary brain tumor that contains a subpopulation of cells called glioblastoma stem cells, which are responsible for tumor initiation, growth and recurrence after treatment. Recent transcriptomic studies have highlighted that calcium pathways predominate in glioblastoma stem cells. Calcium channels have the ability to transduce signals from the microenvironment and are therefore ideally placed to control cellular behavior. Using multiple approaches, we demonstrate in five different primary cultures, previously derived from surgical specimens, that glioblastoma stem cells express store-operated channels (SOC) that support calcium entry into these cells. Pharmacological inhibition of SOC dramatically reduces cell proliferation and stem cell self-renewal in these cultures. By identifying SOC as a critical mechanism involved in the maintenance of the stem cell population in glioblastoma, our study will contribute to the framework for the identification of new therapies against this deadly tumor. Abstract Glioblastoma is the most frequent and deadly form of primary brain tumors. Despite multimodal treatment, more than 90% of patients experience tumor recurrence. Glioblastoma contains a small population of cells, called glioblastoma stem cells (GSC) that are highly resistant to treatment and endowed with the ability to regenerate the tumor, which accounts for tumor recurrence. Transcriptomic studies disclosed an enrichment of calcium (Ca2+) signaling transcripts in GSC. In non-excitable cells, store-operated channels (SOC) represent a major route of Ca2+ influx. As SOC regulate the self-renewal of adult neural stem cells that are possible cells of origin of GSC, we analyzed the roles of SOC in cultures of GSC previously derived from five different glioblastoma surgical specimens. Immunoblotting and immunocytochemistry experiments showed that GSC express Orai1 and TRPC1, two core SOC proteins, along with their activator STIM1. Ca2+ imaging demonstrated that SOC support Ca2+ entries in GSC. Pharmacological inhibition of SOC-dependent Ca2+ entries decreased proliferation, impaired self-renewal, and reduced expression of the stem cell marker SOX2 in GSC. Our data showing the ability of SOC inhibitors to impede GSC self-renewal paves the way for a strategy to target the cells considered responsible for conveying resistance to treatment and tumor relapse.
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Affiliation(s)
- Elodie Terrié
- CNRS ERL 7003, Signalisation et Transports Ioniques Membranaires, University of Poitiers, CEDEX 09, 86073 Poitiers, France; (E.T.); (N.D.); (Y.B.); (T.H.); (L.C.); (P.A.); (B.C.)
| | - Nadine Déliot
- CNRS ERL 7003, Signalisation et Transports Ioniques Membranaires, University of Poitiers, CEDEX 09, 86073 Poitiers, France; (E.T.); (N.D.); (Y.B.); (T.H.); (L.C.); (P.A.); (B.C.)
| | - Yassine Benzidane
- CNRS ERL 7003, Signalisation et Transports Ioniques Membranaires, University of Poitiers, CEDEX 09, 86073 Poitiers, France; (E.T.); (N.D.); (Y.B.); (T.H.); (L.C.); (P.A.); (B.C.)
| | - Thomas Harnois
- CNRS ERL 7003, Signalisation et Transports Ioniques Membranaires, University of Poitiers, CEDEX 09, 86073 Poitiers, France; (E.T.); (N.D.); (Y.B.); (T.H.); (L.C.); (P.A.); (B.C.)
| | - Laëtitia Cousin
- CNRS ERL 7003, Signalisation et Transports Ioniques Membranaires, University of Poitiers, CEDEX 09, 86073 Poitiers, France; (E.T.); (N.D.); (Y.B.); (T.H.); (L.C.); (P.A.); (B.C.)
| | - Patrick Bois
- EA 4379, Signalisation et Transports Ioniques Membranaires, University of Poitiers, CEDEX 09, 86073 Poitiers, France;
| | - Lisa Oliver
- CRCINA-UMR 1232 INSERM, Université de Nantes, CEDEX 01, 44007 Nantes, France; (L.O.); (F.V.)
| | - Patricia Arnault
- CNRS ERL 7003, Signalisation et Transports Ioniques Membranaires, University of Poitiers, CEDEX 09, 86073 Poitiers, France; (E.T.); (N.D.); (Y.B.); (T.H.); (L.C.); (P.A.); (B.C.)
| | - François Vallette
- CRCINA-UMR 1232 INSERM, Université de Nantes, CEDEX 01, 44007 Nantes, France; (L.O.); (F.V.)
- CNRS GDR3697, Micronit “Microenvironment of Tumor Niches”, 37000 Tours, France
| | - Bruno Constantin
- CNRS ERL 7003, Signalisation et Transports Ioniques Membranaires, University of Poitiers, CEDEX 09, 86073 Poitiers, France; (E.T.); (N.D.); (Y.B.); (T.H.); (L.C.); (P.A.); (B.C.)
- CNRS GDR3697, Micronit “Microenvironment of Tumor Niches”, 37000 Tours, France
| | - Valérie Coronas
- CNRS ERL 7003, Signalisation et Transports Ioniques Membranaires, University of Poitiers, CEDEX 09, 86073 Poitiers, France; (E.T.); (N.D.); (Y.B.); (T.H.); (L.C.); (P.A.); (B.C.)
- CNRS GDR3697, Micronit “Microenvironment of Tumor Niches”, 37000 Tours, France
- Correspondence: ; Tel.: +33-(0)5-49-45-36-55
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Coronas V, Terrié E, Déliot N, Arnault P, Constantin B. Calcium Channels in Adult Brain Neural Stem Cells and in Glioblastoma Stem Cells. Front Cell Neurosci 2020; 14:600018. [PMID: 33281564 PMCID: PMC7691577 DOI: 10.3389/fncel.2020.600018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 10/06/2020] [Indexed: 12/12/2022] Open
Abstract
The brain of adult mammals, including humans, contains neural stem cells (NSCs) located within specific niches of which the ventricular-subventricular zone (V-SVZ) is the largest one. Under physiological conditions, NSCs proliferate, self-renew and produce new neurons and glial cells. Several recent studies established that oncogenic mutations in adult NSCs of the V-SVZ are responsible for the emergence of malignant primary brain tumors called glioblastoma. These aggressive tumors contain a small subpopulation of cells, the glioblastoma stem cells (GSCs), that are endowed with proliferative and self-renewal abilities like NSCs from which they may arise. GSCs are thus considered as the cells that initiate and sustain tumor growth and, because of their resistance to current treatments, provoke tumor relapse. A growing body of studies supports that Ca2+ signaling controls a variety of processes in NSCs and GSCs. Ca2+ is a ubiquitous second messenger whose fluctuations of its intracellular concentrations are handled by channels, pumps, exchangers, and Ca2+ binding proteins. The concerted action of the Ca2+ toolkit components encodes specific Ca2+ signals with defined spatio-temporal characteristics that determine the cellular responses. In this review, after a general overview of the adult brain NSCs and GSCs, we focus on the multiple roles of the Ca2+ toolkit in NSCs and discuss how GSCs hijack these mechanisms to promote tumor growth. Extensive knowledge of the role of the Ca2+ toolkit in the management of essential functions in healthy and pathological stem cells of the adult brain should help to identify promising targets for clinical applications.
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Affiliation(s)
- Valérie Coronas
- Laboratoire STIM, Université de Poitiers-CNRS ERL 7003, Poitiers, France
| | - Elodie Terrié
- Laboratoire STIM, Université de Poitiers-CNRS ERL 7003, Poitiers, France
| | - Nadine Déliot
- Laboratoire STIM, Université de Poitiers-CNRS ERL 7003, Poitiers, France
| | - Patricia Arnault
- Laboratoire STIM, Université de Poitiers-CNRS ERL 7003, Poitiers, France
| | - Bruno Constantin
- Laboratoire STIM, Université de Poitiers-CNRS ERL 7003, Poitiers, France
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Domenichini F, Terrié E, Arnault P, Harnois T, Magaud C, Bois P, Constantin B, Coronas V. Store-Operated Calcium Entries Control Neural Stem Cell Self-Renewal in the Adult Brain Subventricular Zone. Stem Cells 2018; 36:761-774. [PMID: 29359518 DOI: 10.1002/stem.2786] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 12/19/2017] [Accepted: 01/10/2018] [Indexed: 12/13/2022]
Abstract
The subventricular zone (SVZ) is the major stem cell niche in the brain of adult mammals. Within this region, neural stem cells (NSC) proliferate, self-renew and give birth to neurons and glial cells. Previous studies underlined enrichment in calcium signaling-related transcripts in adult NSC. Because of their ability to mobilize sustained calcium influxes in response to a wide range of extracellular factors, store-operated channels (SOC) appear to be, among calcium channels, relevant candidates to induce calcium signaling in NSC whose cellular activities are continuously adapted to physiological signals from the microenvironment. By Reverse Transcription Polymerase Chain Reaction (RT-PCR), Western blotting and immunocytochemistry experiments, we demonstrate that SVZ cells express molecular actors known to build up SOC, namely transient receptor potential canonical 1 (TRPC1) and Orai1, as well as their activator stromal interaction molecule 1 (STIM1). Calcium imaging reveals that SVZ cells display store-operated calcium entries. Pharmacological blockade of SOC with SKF-96365 or YM-58483 (also called BTP2) decreases proliferation, impairs self-renewal by shifting the type of SVZ stem cell division from symmetric proliferative to asymmetric, thereby reducing the stem cell population. Brain section immunostainings show that TRPC1, Orai1, and STIM1 are expressed in vivo, in SOX2-positive SVZ NSC. Injection of SKF-96365 in brain lateral ventricle diminishes SVZ cell proliferation and reduces the ability of SVZ cells to form neurospheres in vitro. The present study combining in vitro and in vivo approaches uncovers a major role for SOC in the control of SVZ NSC population and opens new fields of investigation for stem cell biology in health and disease. Stem Cells 2018;36:761-774.
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Affiliation(s)
- Florence Domenichini
- Signalisation et Transports Ioniques Membranaires, University of Poitiers, CNRS ERL 7003, Poitiers Cedex 09, France
| | - Elodie Terrié
- Signalisation et Transports Ioniques Membranaires, University of Poitiers, CNRS ERL 7003, Poitiers Cedex 09, France
| | - Patricia Arnault
- Signalisation et Transports Ioniques Membranaires, University of Poitiers, CNRS ERL 7003, Poitiers Cedex 09, France
| | - Thomas Harnois
- Signalisation et Transports Ioniques Membranaires, University of Poitiers, CNRS ERL 7003, Poitiers Cedex 09, France
| | - Christophe Magaud
- Signalisation et Transports Ioniques Membranaires, University of Poitiers, CNRS ERL 7003, Poitiers Cedex 09, France
| | - Patrick Bois
- Signalisation et Transports Ioniques Membranaires, University of Poitiers, CNRS ERL 7003, Poitiers Cedex 09, France
| | - Bruno Constantin
- Signalisation et Transports Ioniques Membranaires, University of Poitiers, CNRS ERL 7003, Poitiers Cedex 09, France
| | - Valérie Coronas
- Signalisation et Transports Ioniques Membranaires, University of Poitiers, CNRS ERL 7003, Poitiers Cedex 09, France
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