1
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Yonezawa Y, Takahashi I, Ohseto H, Ueno F, Onuma T, Noda A, Murakami K, Ishikuro M, Obara T, Kuriyama S. Genome-wide association study of nausea and vomiting during pregnancy in Japan: the TMM BirThree Cohort Study. BMC Pregnancy Childbirth 2024; 24:209. [PMID: 38509478 PMCID: PMC10953086 DOI: 10.1186/s12884-024-06376-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 02/27/2024] [Indexed: 03/22/2024] Open
Abstract
BACKGROUND Nausea and vomiting during pregnancy (NVP) and hyperemesis gravidarum (HG), common conditions affecting most pregnant women, are highly heritable and associated with maternal and fetal morbidity. However, the pathologies underlying NVP and HG and their associated loci are scarce. METHODS We performed genome-wide association studies (GWAS) of NVP in pregnant women (n = 23,040) who participated in the Tohoku Medical Megabank Project Birth and Three-Generation Cohort Study in Japan from July 2013 to March 2017. Participants were divided into discovery (n = 9,464) and replication (n = 10,051) stages based on the platform used for their genotyping. Loci that achieved the genome-wide significance level (p < 5.0 × 10- 8) in the discovery stage were selected for genotyping in the replication stage. A meta-analysis integrating the discovery and replication stage results (n = 19,515) was conducted. NVP-related variables were identified as categorical or continuous. RESULTS GWAS analysis in the discovery phase revealed loci linked to NVP in two gene regions, 11q22.1 (rs77775955) and 19p13.11 (rs749451 and rs28568614). Loci in these two gene regions have also been shown to be associated with HG in a White European population, indicating the generalizability of the GWAS analyses conducted in this study. Of these, only rs749451 and rs28568614 at 19p13.11 reached the genome-wide suggestive level (p < 1.0 × 10- 5) in the replication stage; however, both loci were significant in the meta-analysis. CONCLUSIONS NVP-related loci were identified in the Japanese population at 11q22.1 and 19p13.11, as reported in previous GWAS. This study contributes new evidence on the generalizability of previous GWAS on the association between genetic background and NVP.
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Affiliation(s)
- Yudai Yonezawa
- Division of Molecular Epidemiology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
- Innovation Division, KAGOME CO., LTD, 17 Nishitomiyama, Nasushiobara, Tochigi, 329- 2762, Japan
| | - Ippei Takahashi
- Division of Molecular Epidemiology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Hisashi Ohseto
- Division of Molecular Epidemiology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Fumihiko Ueno
- Division of Molecular Epidemiology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
- Tohoku Medical Megabank Organization, Tohoku University, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan
| | - Tomomi Onuma
- Division of Molecular Epidemiology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
- Tohoku Medical Megabank Organization, Tohoku University, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan
| | - Aoi Noda
- Division of Molecular Epidemiology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
- Tohoku Medical Megabank Organization, Tohoku University, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan
- Department of Pharmaceutical Sciences, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba- ku, Sendai, Miyagi, 980-0872, Japan
| | - Keiko Murakami
- Division of Molecular Epidemiology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
- Tohoku Medical Megabank Organization, Tohoku University, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan
| | - Mami Ishikuro
- Division of Molecular Epidemiology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
- Tohoku Medical Megabank Organization, Tohoku University, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan
| | - Taku Obara
- Division of Molecular Epidemiology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
- Tohoku Medical Megabank Organization, Tohoku University, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan
- Department of Pharmaceutical Sciences, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba- ku, Sendai, Miyagi, 980-0872, Japan
| | - Shinichi Kuriyama
- Division of Molecular Epidemiology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan.
- Tohoku Medical Megabank Organization, Tohoku University, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan.
- International Research Institute of Disaster Science, Tohoku University, 468-1 Aramakiaoba, Aoba-ku, Sendai, Miyagi, 980-8572, Japan.
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2
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Nishiyama K, Kato Y, Nishimura A, Mi X, Nagata R, Mori Y, Azuma YT, Nishida M. Pharmacological Activation of TRPC6 Channel Prevents Colitis Progression. Int J Mol Sci 2024; 25:2401. [PMID: 38397074 PMCID: PMC10889536 DOI: 10.3390/ijms25042401] [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: 01/31/2024] [Revised: 02/15/2024] [Accepted: 02/16/2024] [Indexed: 02/25/2024] Open
Abstract
We recently reported that transient receptor potential canonical (TRPC) 6 channel activity contributes to intracellular Zn2+ homeostasis in the heart. Zn2+ has also been implicated in the regulation of intestinal redox and microbial homeostasis. This study aims to investigate the role of TRPC6-mediated Zn2+ influx in the stress resistance of the intestine. The expression profile of TRPC1-C7 mRNAs in the actively inflamed mucosa from inflammatory bowel disease (IBD) patients was analyzed using the GEO database. Systemic TRPC3 knockout (KO) and TRPC6 KO mice were treated with dextran sulfate sodium (DSS) to induce colitis. The Zn2+ concentration and the mRNA expression levels of oxidative/inflammatory markers in colon tissues were quantitatively analyzed, and gut microbiota profiles were compared. TRPC6 mRNA expression level was increased in IBD patients and DSS-treated mouse colon tissues. DSS-treated TRPC6 KO mice, but not TRPC3 KO mice, showed severe weight loss and increased disease activity index compared with DSS-treated WT mice. The mRNA abundances of antioxidant proteins were basically increased in the TRPC6 KO colon, with changes in gut microbiota profiles. Treatment with TRPC6 activator prevented the DSS-induced colitis progression accompanied by increasing Zn2+ concentration. We suggest that TRPC6-mediated Zn2+ influx activity plays a key role in stress resistance against IBD, providing a new strategy for treating colitis.
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Affiliation(s)
- Kazuhiro Nishiyama
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan; (K.N.); (Y.K.); (X.M.)
- Laboratory of Prophylactic Pharmacology, Osaka Metropolitan University Graduate School of Veterinary Science, Osaka 598-8531, Japan;
| | - Yuri Kato
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan; (K.N.); (Y.K.); (X.M.)
| | - Akiyuki Nishimura
- National Institute for Physiological Sciences (NIPS), National Institutes of Natural Sciences, Okazaki 444-8787, Japan;
- Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki 444-8787, Japan
- SOKENDAI (Department of Physiological Sciences, School of Life Science, The Graduate University for Advanced Studies), Okazaki 444-8787, Japan
| | - Xinya Mi
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan; (K.N.); (Y.K.); (X.M.)
| | - Ryu Nagata
- Graduate School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan;
| | - Yasuo Mori
- Graduate School of Engineering, Kyoto University, Kyoto 615-8530, Japan;
| | - Yasu-Taka Azuma
- Laboratory of Prophylactic Pharmacology, Osaka Metropolitan University Graduate School of Veterinary Science, Osaka 598-8531, Japan;
| | - Motohiro Nishida
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan; (K.N.); (Y.K.); (X.M.)
- National Institute for Physiological Sciences (NIPS), National Institutes of Natural Sciences, Okazaki 444-8787, Japan;
- Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki 444-8787, Japan
- SOKENDAI (Department of Physiological Sciences, School of Life Science, The Graduate University for Advanced Studies), Okazaki 444-8787, Japan
- Department of Physiology, Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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3
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Baron J, Groschner K, Tiapko O. Calcium transport and sensing in TRPC channels - New insights into a complex feedback regulation. Cell Calcium 2023; 116:102816. [PMID: 37897981 DOI: 10.1016/j.ceca.2023.102816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/16/2023] [Accepted: 10/17/2023] [Indexed: 10/30/2023]
Abstract
Canonical TRP (TRPC) channels are a still enigmatic family of signaling molecules with multimodal sensing features. These channels enable Ca2+ influx through the plasma membrane to control a diverse range of cellular functions. Based on both regulatory- and recently uncovered structural features, TRPC channels are considered to coordinate Ca2+ and other divalent cations not only within the permeation path but also at additional sensory sites. Analysis of TRPC structures by cryo-EM identified multiple regulatory ion binding pockets. With this review, we aim at an overview and a critical discussion of the current concepts of divalent sensing by TRPC channels.
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Affiliation(s)
- Jasmin Baron
- Gottfried-Schatz-Research-Center Medical Physics and Biophysics, Medical University of Graz, Neue Stiftingtalstrasse 6/H03, 8010 Graz, Austria
| | - Klaus Groschner
- Gottfried-Schatz-Research-Center Medical Physics and Biophysics, Medical University of Graz, Neue Stiftingtalstrasse 6/H03, 8010 Graz, Austria
| | - Oleksandra Tiapko
- Gottfried-Schatz-Research-Center Medical Physics and Biophysics, Medical University of Graz, Neue Stiftingtalstrasse 6/H03, 8010 Graz, Austria.
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4
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Hara T, Yoshigai E, Ohashi T, Fukada T. Zinc in Cardiovascular Functions and Diseases: Epidemiology and Molecular Mechanisms for Therapeutic Development. Int J Mol Sci 2023; 24:ijms24087152. [PMID: 37108314 PMCID: PMC10139119 DOI: 10.3390/ijms24087152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 04/04/2023] [Accepted: 04/09/2023] [Indexed: 04/29/2023] Open
Abstract
Zinc is an essential trace element that plays an important physiological role in numerous cellular processes. Zinc deficiency can result in diverse symptoms, such as impairment of the immune response, skin disorders, and impairments in cardiovascular functions. Recent reports have demonstrated that zinc acts as a signaling molecule, and its signaling pathways, referred to as zinc signals, are related to the molecular mechanisms of cardiovascular functions. Therefore, comprehensive understanding of the significance of zinc-mediated signaling pathways is vital as a function of zinc as a nutritional component and of its molecular mechanisms and targets. Several basic and clinical studies have reported the relationship between zinc level and the onset and pathology of cardiovascular diseases, which has attracted much attention in recent years. In this review, we summarize the recent findings regarding the effects of zinc on cardiovascular function. We also discuss the importance of maintaining zinc homeostasis in the cardiovascular system and its therapeutic potential as a novel drug target.
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Affiliation(s)
- Takafumi Hara
- Molecular and Cellular Physiology, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770-8514, Japan
| | - Emi Yoshigai
- Molecular and Cellular Physiology, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770-8514, Japan
| | - Takuto Ohashi
- Molecular and Cellular Physiology, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770-8514, Japan
| | - Toshiyuki Fukada
- Molecular and Cellular Physiology, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770-8514, Japan
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5
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Dietrich A. Is Zn 2+ the new Ca 2+ for TRPC6 channels in the myocardium? Cell Calcium 2023; 109:102674. [PMID: 36450202 DOI: 10.1016/j.ceca.2022.102674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 11/19/2022] [Indexed: 11/23/2022]
Abstract
Transient Receptor Potential (TRP) channels are nonselective cation channels, which are mainly permeable to Ca2+ and Na+ but many of them are also permeable to Zn2+. In a new elegant study, a Zn2+-dependent pathway involving the TRP member TRPC6 and α1- as well as β-adrenoceptors (AR) was dissected in rodent myocytes. Norepinephrine-mediated activation of α1-AR induces Zn2+ influx through TRPC6 channels, which reinforces β-AR-mediated positive inotropy and may help patients with heart failure. This work encourages a closer look at the consequences of Zn2+ permeation through TRP channels in human health and disease.
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Affiliation(s)
- Alexander Dietrich
- Walther-Straub-Institute of Pharmacology and Toxicology, Member of the German Centre for Lung Research (DZL), LMU Munich, Germany.
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6
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Englisch CN, Paulsen F, Tschernig T. TRPC Channels in the Physiology and Pathophysiology of the Renal Tubular System: What Do We Know? Int J Mol Sci 2022; 24:ijms24010181. [PMID: 36613622 PMCID: PMC9820145 DOI: 10.3390/ijms24010181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 12/12/2022] [Accepted: 12/17/2022] [Indexed: 12/24/2022] Open
Abstract
The study of transient receptor potential (TRP) channels has dramatically increased during the past few years. TRP channels function as sensors and effectors in the cellular adaptation to environmental changes. Here, we review literature investigating the physiological and pathophysiological roles of TRPC channels in the renal tubular system with a focus on TRPC3 and TRPC6. TRPC3 plays a key role in Ca2+ homeostasis and is involved in transcellular Ca2+ reabsorption in the proximal tubule and the collecting duct. TRPC3 also conveys the osmosensitivity of principal cells of the collecting duct and is implicated in vasopressin-induced membrane translocation of AQP-2. Autosomal dominant polycystic kidney disease (ADPKD) can often be attributed to mutations of the PKD2 gene. TRPC3 is supposed to have a detrimental role in ADPKD-like conditions. The tubule-specific physiological functions of TRPC6 have not yet been entirely elucidated. Its pathophysiological role in ischemia-reperfusion injuries is a subject of debate. However, TRPC6 seems to be involved in tumorigenesis of renal cell carcinoma. In summary, TRPC channels are relevant in multiples conditions of the renal tubular system. There is a need to further elucidate their pathophysiology to better understand certain renal disorders and ultimately create new therapeutic targets to improve patient care.
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Affiliation(s)
- Colya N. Englisch
- Institute of Anatomy and Cell Biology, Saarland University, 66421 Homburg/Saar, Germany
| | - Friedrich Paulsen
- Institute of Functional and Clinical Anatomy, Friedrich Alexander University Erlangen-Nürnberg, 91054 Erlangen, Germany
| | - Thomas Tschernig
- Institute of Anatomy and Cell Biology, Saarland University, 66421 Homburg/Saar, Germany
- Correspondence: ; Tel.: +49-6841-1626-100
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7
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Oda S, Nishiyama K, Furumoto Y, Yamaguchi Y, Nishimura A, Tang X, Kato Y, Numaga-Tomita T, Kaneko T, Mangmool S, Kuroda T, Okubo R, Sanbo M, Hirabayashi M, Sato Y, Nakagawa Y, Kuwahara K, Nagata R, Iribe G, Mori Y, Nishida M. Myocardial TRPC6-mediated Zn 2+ influx induces beneficial positive inotropy through β-adrenoceptors. Nat Commun 2022; 13:6374. [PMID: 36289215 PMCID: PMC9606288 DOI: 10.1038/s41467-022-34194-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 10/12/2022] [Indexed: 12/25/2022] Open
Abstract
Baroreflex control of cardiac contraction (positive inotropy) through sympathetic nerve activation is important for cardiocirculatory homeostasis. Transient receptor potential canonical subfamily (TRPC) channels are responsible for α1-adrenoceptor (α1AR)-stimulated cation entry and their upregulation is associated with pathological cardiac remodeling. Whether TRPC channels participate in physiological pump functions remains unclear. We demonstrate that TRPC6-specific Zn2+ influx potentiates β-adrenoceptor (βAR)-stimulated positive inotropy in rodent cardiomyocytes. Deletion of trpc6 impairs sympathetic nerve-activated positive inotropy but not chronotropy in mice. TRPC6-mediated Zn2+ influx boosts α1AR-stimulated βAR/Gs-dependent signaling in rat cardiomyocytes by inhibiting β-arrestin-mediated βAR internalization. Replacing two TRPC6-specific amino acids in the pore region with TRPC3 residues diminishes the α1AR-stimulated Zn2+ influx and positive inotropic response. Pharmacological enhancement of TRPC6-mediated Zn2+ influx prevents chronic heart failure progression in mice. Our data demonstrate that TRPC6-mediated Zn2+ influx with α1AR stimulation enhances baroreflex-induced positive inotropy, which may be a new therapeutic strategy for chronic heart failure.
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Affiliation(s)
- Sayaka Oda
- grid.250358.90000 0000 9137 6732National Institute for Physiological Sciences (NIPS), National Institutes of Natural Sciences, Okazaki, 444-8787 Japan ,grid.250358.90000 0000 9137 6732Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, 444-8787 Japan ,grid.275033.00000 0004 1763 208XDepartment of Physiological Sciences, SOKENDAI (School of Life Science, The Graduate University for Advanced Studies), Aichi, 444-8787 Japan
| | - Kazuhiro Nishiyama
- grid.177174.30000 0001 2242 4849Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582 Japan
| | - Yuka Furumoto
- grid.177174.30000 0001 2242 4849Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582 Japan
| | - Yohei Yamaguchi
- grid.252427.40000 0000 8638 2724Asahikawa Medical University, Hokkaido, 078-8510 Japan
| | - Akiyuki Nishimura
- grid.250358.90000 0000 9137 6732National Institute for Physiological Sciences (NIPS), National Institutes of Natural Sciences, Okazaki, 444-8787 Japan ,grid.250358.90000 0000 9137 6732Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, 444-8787 Japan ,grid.275033.00000 0004 1763 208XDepartment of Physiological Sciences, SOKENDAI (School of Life Science, The Graduate University for Advanced Studies), Aichi, 444-8787 Japan
| | - Xiaokang Tang
- grid.250358.90000 0000 9137 6732National Institute for Physiological Sciences (NIPS), National Institutes of Natural Sciences, Okazaki, 444-8787 Japan ,grid.250358.90000 0000 9137 6732Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, 444-8787 Japan ,grid.275033.00000 0004 1763 208XDepartment of Physiological Sciences, SOKENDAI (School of Life Science, The Graduate University for Advanced Studies), Aichi, 444-8787 Japan
| | - Yuri Kato
- grid.177174.30000 0001 2242 4849Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582 Japan
| | - Takuro Numaga-Tomita
- grid.250358.90000 0000 9137 6732National Institute for Physiological Sciences (NIPS), National Institutes of Natural Sciences, Okazaki, 444-8787 Japan ,grid.250358.90000 0000 9137 6732Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, 444-8787 Japan ,grid.263518.b0000 0001 1507 4692Shinshu University School of Medicine, Matsumoto, 390-8621 Japan
| | - Toshiyuki Kaneko
- grid.252427.40000 0000 8638 2724Asahikawa Medical University, Hokkaido, 078-8510 Japan
| | - Supachoke Mangmool
- grid.10223.320000 0004 1937 0490Faculty of Science, Mahidol University, Bangkok, 10400 Thailand
| | - Takuya Kuroda
- grid.410797.c0000 0001 2227 8773National Institute of Health Sciences, Kanagawa, 210-9501 Japan
| | - Reishin Okubo
- grid.177174.30000 0001 2242 4849Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582 Japan
| | - Makoto Sanbo
- grid.250358.90000 0000 9137 6732National Institute for Physiological Sciences (NIPS), National Institutes of Natural Sciences, Okazaki, 444-8787 Japan
| | - Masumi Hirabayashi
- grid.250358.90000 0000 9137 6732National Institute for Physiological Sciences (NIPS), National Institutes of Natural Sciences, Okazaki, 444-8787 Japan
| | - Yoji Sato
- grid.410797.c0000 0001 2227 8773National Institute of Health Sciences, Kanagawa, 210-9501 Japan
| | - Yasuaki Nakagawa
- grid.258799.80000 0004 0372 2033Kyoto University Graduate School of Medicine, Kyoto, 606-8507 Japan
| | - Koichiro Kuwahara
- grid.263518.b0000 0001 1507 4692Shinshu University School of Medicine, Matsumoto, 390-8621 Japan
| | - Ryu Nagata
- grid.136593.b0000 0004 0373 3971Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, 565-0871 Japan
| | - Gentaro Iribe
- grid.252427.40000 0000 8638 2724Asahikawa Medical University, Hokkaido, 078-8510 Japan
| | - Yasuo Mori
- grid.258799.80000 0004 0372 2033Graduate School of Engineering, Kyoto University, Kyoto, 615-8510 Japan
| | - Motohiro Nishida
- grid.250358.90000 0000 9137 6732National Institute for Physiological Sciences (NIPS), National Institutes of Natural Sciences, Okazaki, 444-8787 Japan ,grid.250358.90000 0000 9137 6732Exploratory Research Center on Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, Okazaki, 444-8787 Japan ,grid.275033.00000 0004 1763 208XDepartment of Physiological Sciences, SOKENDAI (School of Life Science, The Graduate University for Advanced Studies), Aichi, 444-8787 Japan ,grid.177174.30000 0001 2242 4849Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, 812-8582 Japan
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8
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Shen B, Mei M, Ai S, Liao X, Li N, Xiang S, Wen C, Tao Y, Dai H. TRPC6 inhibits renal tubular epithelial cell pyroptosis through regulating zinc influx and alleviates renal ischemia-reperfusion injury. FASEB J 2022; 36:e22527. [PMID: 36036542 DOI: 10.1096/fj.202200109rr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 08/11/2022] [Accepted: 08/17/2022] [Indexed: 11/11/2022]
Abstract
Canonical transient receptor potential-6 (TRPC6) has been reported to be involved in cell damage after ischemia/reperfusion (I/R) injury in target organs. While the effect and of TRPC6 on pyroptosis in renal I/R injury remain unclear. In our study, we first established the renal I/R mouse model and oxygen-glucose deprivation and re-oxygenation (OGD/R) cell model, and investigated the impacts of TRPC6 on the pyroptosis-related proteins using CCK-8, western blot, ELISA, and immunofluorescence probes. Besides, we also explored the mechanism of TRPC6 in pyroptosis of renal tubular epithelial cells through A20 knockdown or overexpression and zinc chloride (ZnCl2 ) or a zinc ion chelator (TPEN) treatment. Our results indicated that I/R injury could cause downregulation of TRPC6 both in vivo and in vitro. In the I/R injury murine model, TRPC6 inhibition exacerbated tissue damage and upregulated NLRP3, ASC, caspase-1, IL-18, and IL-1β, which could be alleviated by the administration of ZnCl2 . In the OGD/R cell model, inhibitor of TRPC6 (SAR7334) reduced zinc ion influx, aggravated cell death and upregulated pyroptosis-related protein. The pyroptosis phenotype also could be alleviated by ZnCl2 and intensified by TPEN. Overexpression of A20 reduced the expression of pyroptosis-related protein, increased cell viability in the sh-TRPC6 and TPEN-treated OGD/R cell models, while A20 deficiency impaired the protective effect of zinc ion. Therefore, our results indicate that TRPC6 could promote zinc ion influx in renal tubular epithelial cells, thereby upregulating intracellular A20, inhibiting the activation of inflammasome NLRP3, and ultimately attenuating renal I/R injury.
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Affiliation(s)
- Bingbing Shen
- Department of Nephrology, Chongqing University Central Hospital, Chongqing Key Laboratory of Emergency Medicine, Chongqing Emergency Medical Center, Chongqing, China.,Department of Nephrology, The First Hospital Affiliated to Army Medical University, Chongqing, China
| | - Mei Mei
- Department of Nephrology, The People's Hospital of Shapingba District, Chongqing, China
| | - Shanmu Ai
- Department of Emergency, Chongqing University Central Hospital, Chongqing Key Laboratory of Emergency Medicine, Chongqing Emergency Medical Center, Chongqing, China
| | - Xiaohui Liao
- Department of Nephrology, Affiliated Central Hospital of Chongqing University, Chongqing, China
| | - Ning Li
- Department of Nephrology, Chongqing University Central Hospital, Chongqing Key Laboratory of Emergency Medicine, Chongqing Emergency Medical Center, Chongqing, China
| | - Sha Xiang
- Department of Nephrology, Chongqing University Central Hospital, Chongqing Key Laboratory of Emergency Medicine, Chongqing Emergency Medical Center, Chongqing, China
| | - Chaolin Wen
- Department of Nephrology, Chongqing University Central Hospital, Chongqing Key Laboratory of Emergency Medicine, Chongqing Emergency Medical Center, Chongqing, China
| | - Yang Tao
- Department of Critical Care Medicine, Chongqing University Central Hospital, Chongqing Key Laboratory of Emergency Medicine, Chongqing Emergency Medical Center, Chongqing, China
| | - Huanzi Dai
- Department of Nephrology, Daping Hospital, Army Medical University, Chongqing, China
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9
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Zhang C, Dischler A, Glover K, Qin Y. Neuronal signalling of zinc: from detection and modulation to function. Open Biol 2022; 12:220188. [PMID: 36067793 PMCID: PMC9448499 DOI: 10.1098/rsob.220188] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Zinc is an essential trace element that stabilizes protein structures and allosterically modulates a plethora of enzymes, ion channels and neurotransmitter receptors. Labile zinc (Zn2+) acts as an intracellular and intercellular signalling molecule in response to various stimuli, which is especially important in the central nervous system. Zincergic neurons, characterized by Zn2+ deposits in synaptic vesicles and presynaptic Zn2+ release, are found in the cortex, hippocampus, amygdala, olfactory bulb and spinal cord. To provide an overview of synaptic Zn2+ and intracellular Zn2+ signalling in neurons, the present paper summarizes the fluorescent sensors used to detect Zn2+ signals, the cellular mechanisms regulating the generation and buffering of Zn2+ signals, as well as the current perspectives on their pleiotropic effects on phosphorylation signalling, synapse formation, synaptic plasticity, as well as sensory and cognitive function.
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Affiliation(s)
- Chen Zhang
- Department of Biological Sciences, University of Denver, Denver, CO 80210, USA
| | - Anna Dischler
- Department of Biological Sciences, University of Denver, Denver, CO 80210, USA
| | - Kaitlyn Glover
- Department of Biological Sciences, University of Denver, Denver, CO 80210, USA
| | - Yan Qin
- Department of Biological Sciences, University of Denver, Denver, CO 80210, USA
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10
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Abdinghoff J, Servello D, Jacobs T, Beckmann A, Tschernig T. Evaluation of the presence of TRPC6 channels in human vessels: A pilot study using immunohistochemistry. Biomed Rep 2022; 16:42. [PMID: 35371476 PMCID: PMC8972230 DOI: 10.3892/br.2022.1525] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 02/22/2022] [Indexed: 11/10/2022] Open
Abstract
The TRPC6 channel is permeable to calcium ions as well as other ions and plays an important role in the physiology and pathophysiology of vessels. Findings from animal and cell culture experiments have shown its involvement in important vascular processes such as the Bayliss effect or endothelial-mediated vasodilatation. Furthermore, the relevance of TRPC6 channels in humans has become apparent based on diseases such as idiopathic pulmonary arterial hypertension, focal segmental glomerulosclerosis and atherosclerosis, amongst others. However, histological evidence that systematically detects TRPC6 channels in human vessels has not been provided to date. In this study, 40 vessel sections from nine body donors were obtained, processed and stained with a knockout-validated antibody against the TRPC6 protein using immunohistochemistry and western blotting. More than half of the samples yielded evidence of TRPC6 channel expression in the intima and adventitia. TRPC6 channels were detected in the tunica media in only one of 40 cases. TRPC6 detection in the human intima confirmed several demonstrated physiological aspects of the TRPC6 channels in the vasculature and may also be involved in associated human diseases. The near absence of TRPC6 channels in the tunica media was in contrast to a view that is primarily based on animal studies, from which its presence was assumed.
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Affiliation(s)
- Jan Abdinghoff
- Institute of Anatomy and Cell Biology, Saarland University, Medical Campus, D‑66424 Homburg/Saar, Germany
| | - Davide Servello
- Institute of Anatomy and Cell Biology, Saarland University, Medical Campus, D‑66424 Homburg/Saar, Germany
| | - Tobias Jacobs
- Institute of Anatomy and Cell Biology, Saarland University, Medical Campus, D‑66424 Homburg/Saar, Germany
| | - Anja Beckmann
- Institute of Anatomy and Cell Biology, Saarland University, Medical Campus, D‑66424 Homburg/Saar, Germany
| | - Thomas Tschernig
- Institute of Anatomy and Cell Biology, Saarland University, Medical Campus, D‑66424 Homburg/Saar, Germany
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11
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ZnT1 is a neuronal Zn 2+/Ca 2+ exchanger. Cell Calcium 2021; 101:102505. [PMID: 34871934 DOI: 10.1016/j.ceca.2021.102505] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 10/31/2021] [Accepted: 11/22/2021] [Indexed: 01/22/2023]
Abstract
Zinc transporter 1 (ZnT1; SLC30A1) is present in the neuronal plasma membrane, critically modulating NMDA receptor function and Zn2+ neurotoxicity. The mechanism mediating Zn2+ transport by ZnT1, however, has remained elusive. Here, we investigated ZnT1-dependent Zn2+ transport by measuring intracellular changes of this ion using the fluorescent indicator FluoZin-3. In primary mouse cortical neurons, which express ZnT1, transient addition of extracellular Zn2+ triggered a rise in cytosolic Zn2+, followed by its removal. Knockdown of ZnT1 by adeno associated viral (AAV)-short hairpin RNA (shZnT1) markedly increased rates of Zn2+ rise, and decreased rates of its removal, suggesting that ZnT1 is a primary route for Zn2+ efflux in neurons. Although Zn2+ transport by other members of the SLC30A family is dependent on pH gradients across cellular membranes, altered H+ gradients were not coupled to ZnT1-dependent transport. Removal of cytoplasmic Zn2+, against a large inward gradient during the initial loading phase, suggests that Zn2+ efflux requires a large driving force. We therefore asked if Ca2+ gradients across the membrane can facilitate Zn2+ efflux. Elimination of extracellular Ca2+ abolished Zn2+ efflux, while increased extracellular Ca2+ levels enhanced Zn2+ efflux. Intracellular Ca2+ rises, measured in GCaMP6 expressing neurons, closely paralleled cytoplasmic Zn2+ removal. Taken together, these results strongly suggest that ZnT1 functions as a Zn2+/Ca2+ exchanger, thereby regulating the transport of two ions of fundamental importance in neuronal signaling.
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12
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Pharmacological and genetic inhibition of TRPC6-induced gene transcription. Eur J Pharmacol 2020; 886:173357. [PMID: 32758574 DOI: 10.1016/j.ejphar.2020.173357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 07/04/2020] [Accepted: 07/08/2020] [Indexed: 11/20/2022]
Abstract
Transient receptor potential canonical-6 (TRPC6) channels are non-selective cation channels that can be activated by hyperforin, a constituent of Hypericum perforatum. TRPC6 activation has been linked to a variety of biological functions and pathologies, including focal segmental glomerulosclerosis and the development of various tumor entities. Thus, TRPC6 is an interesting drug target, and a specific pharmacological inhibitor would be very valuable for both basic research and therapy of TRPC6-mediated human pathologies. Here, we assessed the biological activity of various TRP channel inhibitors on hyperforin-stimulated TRPC6 channel signaling. Hyperforin stimulates the activity of the transcription factor AP-1 via TRPC6. Expression experiments involving a TRPC6-specific small hairpin RNA confirmed that hyperforin-induced gene transcription requires TRPC6. Cellular AP-1 activity was measured to assess which compound interrupted the TRPC6-induced intracellular signaling cascade. The results show that the compounds 2-APB, clotrimazole, BCTC, TC-I 2014, SAR 7334, and larixyl acetate blocked TRPC6-mediated activation of AP-1. In contrast, the TRPM8-specific inhibitor RQ-00203078 did not inhibit TRPC6-mediated signaling. 2-APB, clotrimazole, BCTC, and TC-I 2014 are broad-spectrum Ca2+ channel inhibitors, while SAR 7334 and larixyl acetate have been proposed to function as rather TRPC6-specific inhibitors. In this study it is shown that both compounds, in addition to inhibiting TRPC6-induced signaling, completely abolished pregnenolone sulfate-mediated signaling via TRPM3 channels. Thus, SAR 7334 and larixyl acetate are not TRPC6-specific inhibitors.
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13
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Loviscach L, Backes TM, Langfermann DS, Ulrich M, Thiel G. Zn 2+ ions inhibit gene transcription following stimulation of the Ca 2+ channels Ca v1.2 and TRPM3. Metallomics 2020; 12:1735-1747. [PMID: 33030499 DOI: 10.1039/d0mt00180e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Zinc, a trace element, is necessary for the correct structure and function of many proteins. Therefore, Zn2+ has to be taken up by the cells, using specific Zn2+ transporters or Ca2+ channels. In this study, we have focused on two Ca2+ channels, the L-type voltage-gated Cav1.2 channel and the transient receptor potential channel TRPM3. Stimulation of either channel induces an intracellular signaling cascade leading to the activation of the transcription factor AP-1. The influx of Ca2+ ions into the cytoplasm is essential for this activity. We asked whether extracellular Zn2+ ions affect Cav1.2 or TRPM3-induced gene transcription following stimulation of the channels. The results show that extracellular Zn2+ ions reduced the activation of AP-1 by more than 80% following stimulation of either voltage-gated Cav1.2 channels or TRPM3 channels. Experiments performed with cells maintained in Ca2+-free medium revealed that Zn2+ ions cannot replace Ca2+ ions in inducing gene transcription via stimulation of Cav1.2 and TRPM3 channels. Re-addition of Ca2+ ions to the cell culture medium, however, restored the ability of these Ca2+ channels to induce a signaling cascade leading to the activation of AP-1. Secretory cells, including neurons and pancreatic β-cells, release Zn2+ ions during exocytosis. We propose that the released Zn2+ ions function as a negative feedback loop for stimulus-induced exocytosis by inhibiting Ca2+ channel signaling.
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Affiliation(s)
- Louisa Loviscach
- Department of Medical Biochemistry and Molecular Biology, Saarland University Medical Faculty, D-66421 Homburg, Germany.
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14
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Wiegman CH, Li F, Ryffel B, Togbe D, Chung KF. Oxidative Stress in Ozone-Induced Chronic Lung Inflammation and Emphysema: A Facet of Chronic Obstructive Pulmonary Disease. Front Immunol 2020; 11:1957. [PMID: 32983127 PMCID: PMC7492639 DOI: 10.3389/fimmu.2020.01957] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 07/20/2020] [Indexed: 12/19/2022] Open
Abstract
Oxidative stress plays an important role in the pathogenesis of chronic obstructive pulmonary disease (COPD) caused by cigarette smoke and characterized by chronic inflammation, alveolar destruction (emphysema) and bronchiolar obstruction. Ozone is a gaseous constituent of urban air pollution resulting from photochemical interaction of air pollutants such as nitrogen oxide and organic compounds. While acute exposure to ozone induces airway hyperreactivity and neutrophilic inflammation, chronic ozone exposure in mice causes activation of oxidative pathways resulting in cell death and a chronic bronchial inflammation with emphysema, mimicking cigarette smoke-induced COPD. Therefore, the chronic exposure to ozone has become a model for studying COPD. We review recent data on mechanisms of ozone induced lung disease focusing on pathways causing chronic respiratory epithelial cell injury, cell death, alveolar destruction, and tissue remodeling associated with the development of chronic inflammation and AHR. The initial oxidant insult may result from direct effects on the integrity of membranes and organelles of exposed epithelial cells in the airways causing a stress response with the release of mitochondrial reactive oxygen species (ROS), DNA, and proteases. Mitochondrial ROS and mitochondrial DNA activate NLRP3 inflammasome and the DNA sensors cGAS and STING accelerating cell death pathways including caspases with inflammation enhancing alveolar septa destruction, remodeling, and fibrosis. Inhibitors of mitochondrial ROS, NLRP3 inflammasome, DNA sensor, cell death pathways, and IL-1 represent novel therapeutic targets for chronic airways diseases underlined by oxidative stress.
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Affiliation(s)
- Coen H Wiegman
- Section of Airways Disease, National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Feng Li
- Department of Pulmonary Medicine, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Bernhard Ryffel
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), UMR 7355 CNRS-University of Orleans, Orléans, France
| | - Dieudonnée Togbe
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), UMR 7355 CNRS-University of Orleans, Orléans, France.,ArtImmune SAS, Orléans, France
| | - Kian Fan Chung
- Section of Airways Disease, National Heart and Lung Institute, Imperial College London, London, United Kingdom
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15
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Nishida M, Tanaka T, Mangmool S, Nishiyama K, Nishimura A. Canonical Transient Receptor Potential Channels and Vascular Smooth Muscle Cell Plasticity. J Lipid Atheroscler 2020; 9:124-139. [PMID: 32821726 PMCID: PMC7379077 DOI: 10.12997/jla.2020.9.1.124] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/02/2020] [Accepted: 01/03/2020] [Indexed: 12/14/2022] Open
Abstract
Vascular smooth muscle cells (VSMCs) play a pivotal role in the stability and tonic regulation of vascular homeostasis. VSMCs can switch back and forth between highly proliferative (synthetic) and fully differentiated (contractile) phenotypes in response to changes in the vessel environment. Abnormal phenotypic switching of VSMCs is a distinctive characteristic of vascular disorders, including atherosclerosis, pulmonary hypertension, stroke, and peripheral artery disease; however, how the control of VSMC phenotypic switching is dysregulated under pathological conditions remains obscure. Canonical transient receptor potential (TRPC) channels have attracted attention as a key regulator of pathological phenotype switching in VSMCs. Several TRPC subfamily member proteins—especially TRPC1 and TRPC6—are upregulated in pathological VSMCs, and pharmacological inhibition of TRPC channel activity has been reported to improve hypertensive vascular remodeling in rodents. This review summarizes the current understanding of the role of TRPC channels in cardiovascular plasticity, including our recent finding that TRPC6 participates in aberrant VSMC phenotype switching under ischemic conditions, and discusses the therapeutic potential of TRPC channels.
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Affiliation(s)
- Motohiro Nishida
- National Institute for Physiological Sciences and Exploratory Research Center on Life and Living Systems, National Institutes of Natural Sciences, Aichi 444-8787, Japan.,Department of Physiological Sciences, SOKENDAI (School of Life Science, The Graduate University for Advanced Studies), Aichi 444-8787, Japan.,Center for Novel Science Initiatives (CNSI), NINS, Tokyo 105-0001, Japan.,Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Tomohiro Tanaka
- National Institute for Physiological Sciences and Exploratory Research Center on Life and Living Systems, National Institutes of Natural Sciences, Aichi 444-8787, Japan.,Department of Physiological Sciences, SOKENDAI (School of Life Science, The Graduate University for Advanced Studies), Aichi 444-8787, Japan.,Center for Novel Science Initiatives (CNSI), NINS, Tokyo 105-0001, Japan
| | | | - Kazuhiro Nishiyama
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Akiyuki Nishimura
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
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16
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Hasna J, Bohic S, Lemoine S, Blugeon C, Bouron A. Zinc Uptake and Storage During the Formation of the Cerebral Cortex in Mice. Mol Neurobiol 2019; 56:6928-6940. [DOI: 10.1007/s12035-019-1581-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 03/20/2019] [Indexed: 12/17/2022]
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17
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Yang XW, Grossman RB, Xu G. Research Progress of Polycyclic Polyprenylated Acylphloroglucinols. Chem Rev 2018; 118:3508-3558. [PMID: 29461053 DOI: 10.1021/acs.chemrev.7b00551] [Citation(s) in RCA: 242] [Impact Index Per Article: 40.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Polycyclic polyprenylated acylphloroglucinols (PPAPs) are a class of hybrid natural products sharing the mevalonate/methylerythritol phosphate and polyketide biosynthetic pathways and showing considerable structure and bioactivity diversity. This review discusses the progress of research into the chemistry and biological activity of 421 natural PPAPs in the past 11 years as well as in-depth studies of biological activities and total synthesis of some PPAPs isolated before 2006. We created an online database of all PPAPs known to date at http://www.chem.uky.edu/research/grossman/PPAPs . Two subclasses of biosynthetically related metabolites, spirocyclic PPAPs with octahydrospiro[cyclohexan-1,5'-indene]-2,4,6-trione core and complicated PPAPs produced by intramolecular [4 + 2] cycloadditions of MPAPs, are brought into the PPAP family. Some PPAPs' relative or absolute configurations are reassigned or critically discussed, and the confusing trivial names in PPAPs investigations are clarified. Pharmacologic studies have revealed a new molecular mechanism whereby hyperforin and its derivatives regulate neurotransmitter levels by activating TRPC6 as well as the antitumor mechanism of garcinol and its analogues. The antineoplastic potential of some type B PPAPs such as oblongifolin C and guttiferone K has increased significantly. As a result of the recent appearances of innovative synthetic methods and strategies, the total syntheses of 22 natural PPAPs including hyperforin, garcinol, and plukenetione A have been accomplished.
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Affiliation(s)
- Xing-Wei Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China , Kunming Institute of Botany, Chinese Academy of Sciences, and Yunnan Key Laboratory of Natural Medicinal Chemistry , Kunming 650201 , People's Republic of China
| | - Robert B Grossman
- Department of Chemistry , University of Kentucky , Lexington , Kentucky 40506-0055 , United States
| | - Gang Xu
- State Key Laboratory of Phytochemistry and Plant Resources in West China , Kunming Institute of Botany, Chinese Academy of Sciences, and Yunnan Key Laboratory of Natural Medicinal Chemistry , Kunming 650201 , People's Republic of China
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18
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Thiel G, Lesch A, Rubil S, Backes TM, Rössler OG. Regulation of Gene Transcription Following Stimulation of Transient Receptor Potential (TRP) Channels. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2017; 335:167-189. [PMID: 29305012 DOI: 10.1016/bs.ircmb.2017.07.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Transient receptor potential (TRP) channels belong to a heterogeneous superfamily of cation channels that are involved in the regulation of numerous biological functions, including regulation of Ca2+ and glucose homeostasis, tumorigenesis, temperature, and pain sensation. To understand the functions of TRP channels, their associated intracellular signaling pathways and molecular targets have to be identified on the cellular level. Stimulation of TRP channels frequently induces an influx of Ca2+ ions into the cells and the subsequent activation of protein kinases. These intracellular signal transduction pathways ultimately induce changes in the gene expression pattern of the cells. Here, we review the effects of TRPC6, TRPM3, and TRPV1 channel stimulation on the activation of the stimulus-responsive transcription factors AP-1, CREB, Egr-1, Elk-1, and NFAT. Following activation, these transcription factors induce the transcription of delayed response genes. We propose that many biological functions of TRP channels can be explained by the activation of stimulus-responsive transcription factors and their delayed response genes. The proteins encoded by those delayed response genes may be responsible for the biochemical and physiological changes following TRP channel activation.
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Affiliation(s)
- Gerald Thiel
- Saarland University Medical Faculty, Homburg, Germany.
| | - Andrea Lesch
- Saarland University Medical Faculty, Homburg, Germany
| | - Sandra Rubil
- Saarland University Medical Faculty, Homburg, Germany
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19
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Hyperforin activates gene transcription involving transient receptor potential C6 channels. Biochem Pharmacol 2017; 129:96-107. [DOI: 10.1016/j.bcp.2017.01.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 01/17/2017] [Indexed: 12/26/2022]
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20
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Taylor KA, Pugh N. The contribution of zinc to platelet behaviour during haemostasis and thrombosis. Metallomics 2016; 8:144-55. [PMID: 26727074 DOI: 10.1039/c5mt00251f] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Platelets are the primary cellular determinants of haemostasis and pathological thrombus formation leading to myocardial infarction and stroke. Following vascular injury or atherosclerotic plaque rupture, platelets are recruited to sites of damage and undergo activation induced by a variety of soluble and/or insoluble agonists. Platelet activation is a multi-step process culminating in the formation of thrombi, which contribute to the haemostatic process. Zinc (Zn(2+)) is acknowledged as an important signalling molecule in a diverse range of cellular systems, however there is limited understanding of the influence of Zn(2+) on platelet behaviour during thrombus formation. This review evaluates the contributions of exogenous and intracellular Zn(2+) to platelet function and assesses the potential pathophysiological implications of Zn(2+) signalling. We also provide a speculative assessment of the mechanisms by which platelets could respond to changes in extracellular and intracellular Zn(2+) concentration.
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Affiliation(s)
- K A Taylor
- Department of Biomedical and Forensic Sciences, Faculty of Science and Technology, Anglia Ruskin University, Cambridge, CB1 1PT, UK.
| | - N Pugh
- Department of Biomedical and Forensic Sciences, Faculty of Science and Technology, Anglia Ruskin University, Cambridge, CB1 1PT, UK.
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21
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Malucelli E, Fratini M, Notargiacomo A, Gianoncelli A, Merolle L, Sargenti A, Cappadone C, Farruggia G, Lagomarsino S, Iotti S. Where is it and how much? Mapping and quantifying elements in single cells. Analyst 2016; 141:5221-35. [PMID: 27441316 DOI: 10.1039/c6an01091a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The biological function of a chemical element in cells not only requires the determination of its intracellular quantity, but also the spatial distribution of its concentration. Different strategies can be employed to quantify and map the intracellular concentration of elements in single cells. The assessment of the intracellular elemental concentration, which is the relevant information, requires the measurement of cell volume. This challenging and demanding task requires combining different techniques allowing gathering of both morphological and compositional information on the same cell. Moreover, the need to analyse samples more similar to their natural state requires complex hardware equipment, and supplementary efforts in preparation protocols. Nevertheless, the response to the question: "where is it and how much?" is worth all these efforts. This review aims at providing an insight into the recent and most advanced techniques and strategies for quantifying and mapping chemical elements in single cells. We describe and discuss indirect detection techniques (label based) which make use of fluorescent dyes, and direct ones (label free), such as particle induced X-ray emission, proton backscattering spectrometry, scanning transmission ion spectrometry, nano-secondary ion mass spectrometry, X-ray fluorescence microscopy, complemented by X-ray imaging.
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Affiliation(s)
- Emil Malucelli
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna 40127, Italy.
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22
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Bouron A, Chauvet S, Dryer S, Rosado JA. Second Messenger-Operated Calcium Entry Through TRPC6. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 898:201-49. [PMID: 27161231 DOI: 10.1007/978-3-319-26974-0_10] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Canonical transient receptor potential 6 (TRPC6) proteins assemble into heteromultimeric structures forming non-selective cation channels. In addition, many TRPC6-interacting proteins have been identified like some enzymes, channels, pumps, cytoskeleton-associated proteins, immunophilins, or cholesterol-binding proteins, indicating that TRPC6 are engaged into macromolecular complexes. Depending on the cell type and the experimental conditions used, TRPC6 activity has been reported to be controlled by diverse modalities. For instance, the second messenger diacylglycerol, store-depletion, the plant extract hyperforin or H2O2 have all been shown to trigger the opening of TRPC6 channels. A well-characterized consequence of TRPC6 activation is the elevation of the cytosolic concentration of Ca(2+). This latter response can reflect the entry of Ca(2+) through open TRPC6 channels but it can also be due to the Na(+)/Ca(2+) exchanger (operating in its reverse mode) or voltage-gated Ca(2+) channels (recruited in response to a TRPC6-mediated depolarization). Although TRPC6 controls a diverse array of biological functions in many tissues and cell types, its pathophysiological functions are far from being fully understood. This chapter covers some key features of TRPC6, with a special emphasis on their biological significance in kidney and blood cells.
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Affiliation(s)
- Alexandre Bouron
- Université Grenoble Alpes, 38000, Grenoble, France. .,CNRS, iRTSV-LCBM, 38000, Grenoble, France.
| | - Sylvain Chauvet
- Université Grenoble Alpes, 38000, Grenoble, France.,CNRS, iRTSV-LCBM, 38000, Grenoble, France
| | - Stuart Dryer
- University of Houston, Houston, TX, USA.,Baylor College of Medicine, Houston, TX, USA
| | - Juan A Rosado
- Departamento de Fisiología, University of Extremadura, Cáceres, Spain
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23
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Chauvet S, Boonen M, Chevallet M, Jarvis L, Abebe A, Benharouga M, Faller P, Jadot M, Bouron A. The Na+/K+-ATPase and the amyloid-beta peptide aβ1-40 control the cellular distribution, abundance and activity of TRPC6 channels. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2015; 1853:2957-65. [PMID: 26348127 DOI: 10.1016/j.bbamcr.2015.09.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 08/31/2015] [Accepted: 09/03/2015] [Indexed: 11/19/2022]
Abstract
The Na(+)/K(+)-ATPase interacts with the non-selective cation channels TRPC6 but the functional consequences of this association are unknown. Experiments performed with HEK cells over-expressing TRPC6 channels showed that inhibiting the activity of the Na(+)/K(+)-ATPase with ouabain reduced the amount of TRPC6 proteins and depressed Ca(2+) entry through TRPC6. This effect, not mimicked by membrane depolarization with KCl, was abolished by sucrose and bafilomycin-A, and was partially sensitive to the intracellular Ca(2+) chelator BAPTA/AM. Biotinylation and subcellular fractionation experiments showed that ouabain caused a multifaceted redistribution of TRPC6 to the plasma membrane and to an endo/lysosomal compartment where they were degraded. The amyloid beta peptide Aβ(1-40), another inhibitor of the Na(+)/K(+)-ATPase, but not the shorter peptide Aβ1-16, reduced TRPC6 protein levels and depressed TRPC6-mediated responses. In cortical neurons from embryonic mice, ouabain, veratridine (an opener of voltage-gated Na(+) channel), and Aβ(1-40) reduced TRPC6-mediated Ca(2+) responses whereas Aβ(1-16) was ineffective. Furthermore, when Aβ(1-40) was co-added together with zinc acetate it could no longer control TRPC6 activity. Altogether, this work shows the existence of a functional coupling between the Na(+)/K(+)-ATPase and TRPC6. It also suggests that the abundance, distribution and activity of TRPC6 can be regulated by cardiotonic steroids like ouabain and the naturally occurring peptide Aβ(1-40) which underlines the pathophysiological significance of these processes.
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Affiliation(s)
- Sylvain Chauvet
- Université Grenoble Alpes, F-38000 Grenoble, France; CNRS, F-38000 Grenoble, France; CEA, iRTSV-LCBM, F-38000 Grenoble, France
| | - Marielle Boonen
- URPhyM-Laboratoire de Chimie Physiologique, University of Namur, Belgium
| | - Mireille Chevallet
- Université Grenoble Alpes, F-38000 Grenoble, France; CNRS, F-38000 Grenoble, France; CEA, iRTSV-LCBM, F-38000 Grenoble, France
| | - Louis Jarvis
- Université Grenoble Alpes, F-38000 Grenoble, France; CNRS, F-38000 Grenoble, France; CEA, iRTSV-LCBM, F-38000 Grenoble, France
| | - Addis Abebe
- Université Grenoble Alpes, F-38000 Grenoble, France; CNRS, F-38000 Grenoble, France; CEA, iRTSV-LCBM, F-38000 Grenoble, France
| | - Mohamed Benharouga
- Université Grenoble Alpes, F-38000 Grenoble, France; CNRS, F-38000 Grenoble, France; CEA, iRTSV-LCBM, F-38000 Grenoble, France
| | - Peter Faller
- CNRS, Laboratoire de Chimie de Coordination, Toulouse, France
| | - Michel Jadot
- URPhyM-Laboratoire de Chimie Physiologique, University of Namur, Belgium
| | - Alexandre Bouron
- Université Grenoble Alpes, F-38000 Grenoble, France; CNRS, F-38000 Grenoble, France; CEA, iRTSV-LCBM, F-38000 Grenoble, France.
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Chauvet S, Barras A, Boukherroub R, Bouron A. Lipid nanocapsules containing the non-ionic surfactant Solutol HS15 inhibit the transport of calcium through hyperforin-activated channels in neuronal cells. Neuropharmacology 2015; 99:726-34. [PMID: 26341818 DOI: 10.1016/j.neuropharm.2015.08.043] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Revised: 07/28/2015] [Accepted: 08/26/2015] [Indexed: 01/23/2023]
Abstract
Hyperforin is described as a natural antidepressant inhibiting the reuptake of neurotransmitters and also activating cation channels. However the blood-brain barrier limits the access to the brain of this biomolecule. To circumvent this problem it was envisaged to encapsulate hyperforin into biomimetic lipid nano-carriers like lipid nanocapsules (LNCs). When testing the safety of 25 nm LNCs it appeared that they strongly blocked hyperforin-activated Ca2+ channels of cultured cortical neurons. This inhibition was due to one of their main component: solutol HS15 (polyoxyethylene-660-12-hydroxy stearate), a non-ionic soluble surfactant. Solutol HS15 rapidly depresses in a concentration-dependent manner the entry of Ca2+ through hyperforin-activated channels without influencing store-operated channels. This effect is mimicked by Brij58 but not by PEG600, indicating that the lipid chain of Solutol HS15 is important in determining its effects on the channels. The inhibition of the Ca2+ fluxes depends on the cellular cholesterol content; it is stronger after depleting cholesterol with methyl-β-cyclodextrin and is nearly absent on cells cultured in a cholesterol-rich medium. When chronically applied for 24 h, Solutol HS15 slightly up-regulates the entry of Ca2+ through hyperforin-activated channels. Similar observations were made when testing 25 nm lipid nanocapsules containing the surfactant Solutol HS15. Altogether, this study shows that Solutol HS15 perturbs in a cholesterol-dependent manner the activity of some neuronal channels. This is the first demonstration that LNCs containing this surfactant can influence cellular calcium signaling in the brain, a finding that can have important clinical implications.
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Affiliation(s)
- Sylvain Chauvet
- Univ Grenoble Alpes, iRTSV-LCBM, F-38000 Grenoble, France; CNRS, iRTSV-LCBM, F-38000 Grenoble, France; CEA, iRTSV-LCBM, F-38000 Grenoble, France
| | - Alexandre Barras
- Institut d'Electronique, de Microélectronique et de Nanotechnologie (IEMN), UMR CNRS 8520, Université Lille 1, Avenue Poincaré - BP 60069, 59652 Villeneuve d'Ascq, France
| | - Rabah Boukherroub
- Institut d'Electronique, de Microélectronique et de Nanotechnologie (IEMN), UMR CNRS 8520, Université Lille 1, Avenue Poincaré - BP 60069, 59652 Villeneuve d'Ascq, France
| | - Alexandre Bouron
- Univ Grenoble Alpes, iRTSV-LCBM, F-38000 Grenoble, France; CNRS, iRTSV-LCBM, F-38000 Grenoble, France; CEA, iRTSV-LCBM, F-38000 Grenoble, France.
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25
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Blanden AR, Yu X, Wolfe AJ, Gilleran JA, Augeri DJ, O'Dell RS, Olson EC, Kimball SD, Emge TJ, Movileanu L, Carpizo DR, Loh SN. Synthetic metallochaperone ZMC1 rescues mutant p53 conformation by transporting zinc into cells as an ionophore. Mol Pharmacol 2015; 87:825-31. [PMID: 25710967 DOI: 10.1124/mol.114.097550] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
p53 is a Zn(2+)-dependent tumor suppressor inactivated in >50% of human cancers. The most common mutation, R175H, inactivates p53 by reducing its affinity for the essential zinc ion, leaving the mutant protein unable to bind the metal in the low [Zn(2+)]free environment of the cell. The exploratory cancer drug zinc metallochaperone-1 (ZMC1) was previously demonstrated to reactivate this and other Zn(2+)-binding mutants by binding Zn(2+) and buffering it to a level such that Zn(2+) can repopulate the defective binding site, but how it accomplishes this in the context of living cells and organisms is unclear. In this study, we demonstrated that ZMC1 increases intracellular [Zn(2+)]free by functioning as a Zn(2+) ionophore, binding Zn(2+) in the extracellular environment, diffusing across the plasma membrane, and releasing it intracellularly. It raises intracellular [Zn(2+)]free in cancer (TOV112D) and noncancer human embryonic kidney cell line 293 to 15.8 and 18.1 nM, respectively, with half-times of 2-3 minutes. These [Zn(2+)]free levels are predicted to result in ∼90% saturation of p53-R175H, thus accounting for its observed reactivation. This mechanism is supported by the X-ray crystal structure of the [Zn(ZMC1)2] complex, which demonstrates structural and chemical features consistent with those of known metal ionophores. These findings provide a physical mechanism linking zinc metallochaperone-1 in both in vitro and in vivo activities and define the remaining critical parameter necessary for developing synthetic metallochaperones for clinical use.
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Affiliation(s)
- Adam R Blanden
- Department of Biochemistry and Molecular Biology (A.R.B.,S.N.L.) and Department of Neuroscience and Physiology (R.S.O., E.C.O.), State University of New York Upstate Medical University, Syracuse, New York; Rutgers Cancer Institute of New Jersey (X.Y., D.R.C.), Department of Surgery, Rutgers Robert Wood Johnson Medical School (X.Y., D.R.C.), Office of Translational Sciences (J.A.G., D.J.A., S.D.K.), and Department of Chemistry and Chemical Biology (T.J.E.), Rutgers University, New Brunswick, New Jersey; and Department of Physics, Syracuse University, Syracuse, New York (A.J.W., L.M.)
| | - Xin Yu
- Department of Biochemistry and Molecular Biology (A.R.B.,S.N.L.) and Department of Neuroscience and Physiology (R.S.O., E.C.O.), State University of New York Upstate Medical University, Syracuse, New York; Rutgers Cancer Institute of New Jersey (X.Y., D.R.C.), Department of Surgery, Rutgers Robert Wood Johnson Medical School (X.Y., D.R.C.), Office of Translational Sciences (J.A.G., D.J.A., S.D.K.), and Department of Chemistry and Chemical Biology (T.J.E.), Rutgers University, New Brunswick, New Jersey; and Department of Physics, Syracuse University, Syracuse, New York (A.J.W., L.M.)
| | - Aaron J Wolfe
- Department of Biochemistry and Molecular Biology (A.R.B.,S.N.L.) and Department of Neuroscience and Physiology (R.S.O., E.C.O.), State University of New York Upstate Medical University, Syracuse, New York; Rutgers Cancer Institute of New Jersey (X.Y., D.R.C.), Department of Surgery, Rutgers Robert Wood Johnson Medical School (X.Y., D.R.C.), Office of Translational Sciences (J.A.G., D.J.A., S.D.K.), and Department of Chemistry and Chemical Biology (T.J.E.), Rutgers University, New Brunswick, New Jersey; and Department of Physics, Syracuse University, Syracuse, New York (A.J.W., L.M.)
| | - John A Gilleran
- Department of Biochemistry and Molecular Biology (A.R.B.,S.N.L.) and Department of Neuroscience and Physiology (R.S.O., E.C.O.), State University of New York Upstate Medical University, Syracuse, New York; Rutgers Cancer Institute of New Jersey (X.Y., D.R.C.), Department of Surgery, Rutgers Robert Wood Johnson Medical School (X.Y., D.R.C.), Office of Translational Sciences (J.A.G., D.J.A., S.D.K.), and Department of Chemistry and Chemical Biology (T.J.E.), Rutgers University, New Brunswick, New Jersey; and Department of Physics, Syracuse University, Syracuse, New York (A.J.W., L.M.)
| | - David J Augeri
- Department of Biochemistry and Molecular Biology (A.R.B.,S.N.L.) and Department of Neuroscience and Physiology (R.S.O., E.C.O.), State University of New York Upstate Medical University, Syracuse, New York; Rutgers Cancer Institute of New Jersey (X.Y., D.R.C.), Department of Surgery, Rutgers Robert Wood Johnson Medical School (X.Y., D.R.C.), Office of Translational Sciences (J.A.G., D.J.A., S.D.K.), and Department of Chemistry and Chemical Biology (T.J.E.), Rutgers University, New Brunswick, New Jersey; and Department of Physics, Syracuse University, Syracuse, New York (A.J.W., L.M.)
| | - Ryan S O'Dell
- Department of Biochemistry and Molecular Biology (A.R.B.,S.N.L.) and Department of Neuroscience and Physiology (R.S.O., E.C.O.), State University of New York Upstate Medical University, Syracuse, New York; Rutgers Cancer Institute of New Jersey (X.Y., D.R.C.), Department of Surgery, Rutgers Robert Wood Johnson Medical School (X.Y., D.R.C.), Office of Translational Sciences (J.A.G., D.J.A., S.D.K.), and Department of Chemistry and Chemical Biology (T.J.E.), Rutgers University, New Brunswick, New Jersey; and Department of Physics, Syracuse University, Syracuse, New York (A.J.W., L.M.)
| | - Eric C Olson
- Department of Biochemistry and Molecular Biology (A.R.B.,S.N.L.) and Department of Neuroscience and Physiology (R.S.O., E.C.O.), State University of New York Upstate Medical University, Syracuse, New York; Rutgers Cancer Institute of New Jersey (X.Y., D.R.C.), Department of Surgery, Rutgers Robert Wood Johnson Medical School (X.Y., D.R.C.), Office of Translational Sciences (J.A.G., D.J.A., S.D.K.), and Department of Chemistry and Chemical Biology (T.J.E.), Rutgers University, New Brunswick, New Jersey; and Department of Physics, Syracuse University, Syracuse, New York (A.J.W., L.M.)
| | - S David Kimball
- Department of Biochemistry and Molecular Biology (A.R.B.,S.N.L.) and Department of Neuroscience and Physiology (R.S.O., E.C.O.), State University of New York Upstate Medical University, Syracuse, New York; Rutgers Cancer Institute of New Jersey (X.Y., D.R.C.), Department of Surgery, Rutgers Robert Wood Johnson Medical School (X.Y., D.R.C.), Office of Translational Sciences (J.A.G., D.J.A., S.D.K.), and Department of Chemistry and Chemical Biology (T.J.E.), Rutgers University, New Brunswick, New Jersey; and Department of Physics, Syracuse University, Syracuse, New York (A.J.W., L.M.)
| | - Thomas J Emge
- Department of Biochemistry and Molecular Biology (A.R.B.,S.N.L.) and Department of Neuroscience and Physiology (R.S.O., E.C.O.), State University of New York Upstate Medical University, Syracuse, New York; Rutgers Cancer Institute of New Jersey (X.Y., D.R.C.), Department of Surgery, Rutgers Robert Wood Johnson Medical School (X.Y., D.R.C.), Office of Translational Sciences (J.A.G., D.J.A., S.D.K.), and Department of Chemistry and Chemical Biology (T.J.E.), Rutgers University, New Brunswick, New Jersey; and Department of Physics, Syracuse University, Syracuse, New York (A.J.W., L.M.)
| | - Liviu Movileanu
- Department of Biochemistry and Molecular Biology (A.R.B.,S.N.L.) and Department of Neuroscience and Physiology (R.S.O., E.C.O.), State University of New York Upstate Medical University, Syracuse, New York; Rutgers Cancer Institute of New Jersey (X.Y., D.R.C.), Department of Surgery, Rutgers Robert Wood Johnson Medical School (X.Y., D.R.C.), Office of Translational Sciences (J.A.G., D.J.A., S.D.K.), and Department of Chemistry and Chemical Biology (T.J.E.), Rutgers University, New Brunswick, New Jersey; and Department of Physics, Syracuse University, Syracuse, New York (A.J.W., L.M.)
| | - Darren R Carpizo
- Department of Biochemistry and Molecular Biology (A.R.B.,S.N.L.) and Department of Neuroscience and Physiology (R.S.O., E.C.O.), State University of New York Upstate Medical University, Syracuse, New York; Rutgers Cancer Institute of New Jersey (X.Y., D.R.C.), Department of Surgery, Rutgers Robert Wood Johnson Medical School (X.Y., D.R.C.), Office of Translational Sciences (J.A.G., D.J.A., S.D.K.), and Department of Chemistry and Chemical Biology (T.J.E.), Rutgers University, New Brunswick, New Jersey; and Department of Physics, Syracuse University, Syracuse, New York (A.J.W., L.M.)
| | - Stewart N Loh
- Department of Biochemistry and Molecular Biology (A.R.B.,S.N.L.) and Department of Neuroscience and Physiology (R.S.O., E.C.O.), State University of New York Upstate Medical University, Syracuse, New York; Rutgers Cancer Institute of New Jersey (X.Y., D.R.C.), Department of Surgery, Rutgers Robert Wood Johnson Medical School (X.Y., D.R.C.), Office of Translational Sciences (J.A.G., D.J.A., S.D.K.), and Department of Chemistry and Chemical Biology (T.J.E.), Rutgers University, New Brunswick, New Jersey; and Department of Physics, Syracuse University, Syracuse, New York (A.J.W., L.M.)
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Chevallet M, Jarvis L, Harel A, Luche S, Degot S, Chapuis V, Boulay G, Rabilloud T, Bouron A. Functional consequences of the over-expression of TRPC6 channels in HEK cells: impact on the homeostasis of zinc. Metallomics 2015; 6:1269-76. [PMID: 24733507 DOI: 10.1039/c4mt00028e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The canonical transient receptor potential 6 (TRPC6) protein is a non-selective cation channel able to transport essential trace elements like iron (Fe) and zinc (Zn) through the plasma membrane. Its over-expression in HEK-293 cells causes an intracellular accumulation of Zn, indicating that it could be involved in Zn transport. This finding prompted us to better understand the role played by TRPC6 in Zn homeostasis. Experiments done using the fluorescent probe FluoZin-3 showed that HEK cells possess an intracellular pool of mobilisable Zn present in compartments sensitive to the vesicular proton pump inhibitor Baf-A, which affects endo/lysosomes. TRPC6 over-expression facilitates the basal uptake of Zn and enhances the size of the pool of Zn sensitive to Baf-A. Quantitative RT-PCR experiments showed that TRPC6 over-expression does not affect the mRNA expression of Zn transporters (ZnT-1, ZnT-5, ZnT-6, ZnT-7, ZnT-9, Zip1, Zip6, Zip7, and Zip14); however it up-regulates the mRNA expression of metallothionein-I and -II. This alters the Zn buffering capacities of the cells as illustrated by the experiments done using the Zn ionophore Na pyrithione. In addition, HEK cells over-expressing TRPC6 grow slower than their parental HEK cells. This feature can be mimicked by growing HEK cells in a culture medium supplemented with 5 μM of Zn acetate. Finally, a proteomic analysis revealed that TRPC6 up-regulates the expression of the actin-associated proteins ezrin and cofilin-1, and changes the organisation of the actin cytoskeleton without changing the cellular actin content. Altogether, these data indicate that TRPC6 is participating in the transport of Zn and influences the Zn storage and buffering capacities of the cells.
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Friedland K, Harteneck C. Hyperforin: To Be or Not to Be an Activator of TRPC(6). Rev Physiol Biochem Pharmacol 2015; 169:1-24. [DOI: 10.1007/112_2015_25] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Inoue K, O'Bryant Z, Xiong ZG. Zinc-permeable ion channels: effects on intracellular zinc dynamics and potential physiological/pathophysiological significance. Curr Med Chem 2015; 22:1248-57. [PMID: 25666796 PMCID: PMC4363167 DOI: 10.2174/0929867322666150209153750] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 10/14/2014] [Accepted: 02/02/2015] [Indexed: 02/08/2023]
Abstract
Zinc (Zn(2+)) is one of the most important trace metals in the body. It is necessary for the normal function of a large number of protein s including enzymes and transcription factors. While extracellular fluid may contain up to micromolar Zn(2+), intracellular Zn(2+) concentration is generally maintained at a subnanomolar level; this steep gradient across the cell membrane is primarily attributable to Zn(2+) extrusion by Zn(2+) transporting systems. Interestingly, systematic investigation has revealed that activities, previously believed to be dependent on calcium (Ca(2+)), may be partially mediated by Zn(2+). This is also supported by new findings that some Ca(2+)-permeable channels such as voltage-dependent calcium channels (VDCCs), N-methyl-D-aspartate receptors (NMDA), and amino-3- hydroxy-5-methyl-4-isoxazolepropionate receptors (AMPA-Rs) are also permeable to Zn(2+). Thus, the importance of Zn(2+) in physiological and pathophysiological processes is now more widely appreciated. In this review, we describe Zn(2+)- permeable membrane molecules, especially Zn(2+)-permeable ion channels, in intracellular Zn(2+)dynamics and Zn(2+) mediated physiology/pathophysiology.
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Affiliation(s)
- Koichi Inoue
- Neuroscience Institute, Morehouse School of Medicine, Atlanta, USA.
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29
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Permeation, regulation and control of expression of TRP channels by trace metal ions. Pflugers Arch 2014; 467:1143-64. [PMID: 25106481 PMCID: PMC4435931 DOI: 10.1007/s00424-014-1590-3] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 07/10/2014] [Accepted: 07/13/2014] [Indexed: 01/26/2023]
Abstract
Transient receptor potential (TRP) channels form a diverse family of cation channels comprising 28 members in mammals. Although some TRP proteins can only be found on intracellular membranes, most of the TRP protein isoforms reach the plasma membrane where they form ion channels and control a wide number of biological processes. There, their involvement in the transport of cations such as calcium and sodium has been well documented. However, a growing number of studies have started to expand our understanding of these proteins by showing that they also transport other biologically relevant metal ions like zinc, magnesium, manganese and cobalt. In addition to this newly recognized property, the activity and expression of TRP channels can be regulated by metal ions like magnesium, gadolinium, lanthanum or cisplatin. The aim of this review is to highlight the complex relationship between metal ions and TRP channels.
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30
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Nilius B, Szallasi A. Transient Receptor Potential Channels as Drug Targets: From the Science of Basic Research to the Art of Medicine. Pharmacol Rev 2014; 66:676-814. [DOI: 10.1124/pr.113.008268] [Citation(s) in RCA: 348] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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31
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Daoust A, Saoudi Y, Brocard J, Collomb N, Batandier C, Bisbal M, Salomé M, Andrieux A, Bohic S, Barbier EL. Impact of manganese on primary hippocampal neurons from rodents. Hippocampus 2014; 24:598-610. [DOI: 10.1002/hipo.22252] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Revised: 01/17/2014] [Accepted: 01/24/2014] [Indexed: 12/19/2022]
Affiliation(s)
- Alexia Daoust
- Inserm; U836 Grenoble France
- Université Grenoble Alpes, Grenoble Institut des Neurosciences; Grenoble France
| | - Yasmina Saoudi
- Inserm; U836 Grenoble France
- Université Grenoble Alpes, Grenoble Institut des Neurosciences; Grenoble France
| | - Jacques Brocard
- Inserm; U836 Grenoble France
- Université Grenoble Alpes, Grenoble Institut des Neurosciences; Grenoble France
| | - Nora Collomb
- Inserm; U836 Grenoble France
- Université Grenoble Alpes, Grenoble Institut des Neurosciences; Grenoble France
| | - Cécile Batandier
- Laboratoire de Bioénergétique Fondamentale et Appliquée; Grenoble France
| | - Mariano Bisbal
- Inserm; U836 Grenoble France
- Université Grenoble Alpes, Grenoble Institut des Neurosciences; Grenoble France
| | - Murielle Salomé
- European Synchrotron Radiation Facility (ESRF); Grenoble France
| | - Annie Andrieux
- Inserm; U836 Grenoble France
- Université Grenoble Alpes, Grenoble Institut des Neurosciences; Grenoble France
| | - Sylvain Bohic
- Inserm; U836 Grenoble France
- Université Grenoble Alpes, Grenoble Institut des Neurosciences; Grenoble France
- European Synchrotron Radiation Facility (ESRF); Grenoble France
| | - Emmanuel L. Barbier
- Inserm; U836 Grenoble France
- Université Grenoble Alpes, Grenoble Institut des Neurosciences; Grenoble France
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32
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Nilius B, Flockerzi V. What do we really know and what do we need to know: some controversies, perspectives, and surprises. Handb Exp Pharmacol 2014; 223:1239-80. [PMID: 24961986 DOI: 10.1007/978-3-319-05161-1_20] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
TRP channels comprise one of the most rapid growing research topics in ion channel research, in fields related to ion channels including channelopathies and translational medicine. We provide here a critical survey on our current knowledge of TRP channels and highlight some of the still open or controversial questions. This comprises questions related to evolution of TRP channels; biophysics, i.e., permeation; pore properties and gating; modulation; the still-elusive 3D structure; and channel subunits but also their role as general sensory channels and in human diseases. We will conclude that our knowledge on TRP channels is still at the very beginning of an exciting research journey.
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Affiliation(s)
- Bernd Nilius
- Department Cell Mol Medicine, Laboratory Ion Channel Research, KU Leuven, Campus Gasthuisberg, O&N 1, Herestraat 49-Bus 802, 3000, Leuven, Belgium,
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Abstract
TRPC6 is a non-selective cation channel 6 times more permeable to Ca(2+) than to Na(+). Channel homotetramers heterologously expressed have a characteristic doubly rectifying current-voltage relationship and are directly activated by the second messenger diacylglycerol (DAG). TRPC6 proteins are also regulated by specific tyrosine or serine phosphorylation and phosphoinositides. Given its specific expression pattern, TRPC6 is likely to play a number of physiological roles which are confirmed by the analysis of a Trpc6 (-/-) mouse model. In smooth muscle Na(+) influx through TRPC6 channels and activation of voltage-gated Ca(2+) channels by membrane depolarisation is the driving force for contraction. Permeability of pulmonary endothelial cells depends on TRPC6 and induces ischaemia-reperfusion oedema formation in the lungs. TRPC6 was also identified as an essential component of the slit diaphragm architecture of kidney podocytes and plays an important role in the protection of neurons after cerebral ischaemia. Other functions especially in immune and blood cells remain elusive. Recently identified TRPC6 blockers may be helpful for therapeutic approaches in diseases with highly activated TRPC6 channel activity.
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Affiliation(s)
- Alexander Dietrich
- Walther-Straub-Institute for Pharmacology and Toxicology, School of Medicine, LM-University of Munich, 80336, Munich, Germany,
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34
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Lockwood TD. Lysosomal metal, redox and proton cycles influencing the CysHis cathepsin reaction. Metallomics 2013; 5:110-24. [PMID: 23302864 DOI: 10.1039/c2mt20156a] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
In the 1930's pioneers discovered that maximal autolysis in tissue homogenates requires metal chelator, sulfhydryl reducing agent and acid pH. However, metals, reducing equivalents and protons (MR&P) have been overlooked as combined catalytic controls. Three categories of lysosomal machinery drive three distinguishable cycles importing and exporting MR&P. Zn(2+) preemptively inhibits CysHis catalysis under otherwise optimal protonation and reduction. Protein-bound cell Zn(2+) concentration is 200-2000 times the non-sequestered inhibitory concentration. Following autophagy, lysosomal proteolysis liberates much inhibitory Zn(2+). The vacuolar proton pump is the driving force for Zn(2+) export, as well as protonation of the peptidolytic mechanism. Other machinery of lysosomal cycles includes proton-driven Zn(2+) exporters (e.g. SLC11A1), Zn(2+) channels (e.g. TRPML-1), lysosomal thiol reductase, etc. The CysHis dyad is a sensor of the vacuolar environment of MR&P, an integrator of these simultaneous variables, and a catalytic responder. Rate-determination can shift between autophagic substrate acquisition (swallowing) and substrate degradation (digesting). Zn(2+) recycling from degraded proteins to new proteins is a fourth cycle that might pace lysosomal function under some conditions. Heritable insufficient or excess functions of CysHis cathepsins are associated with dysfunctional inflammation and immunity/auto-immunity, including diabetic pathogenesis.
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Affiliation(s)
- Thomas D Lockwood
- Dept. of Pharmacology, School of Medicine, Wright State University, Dayton, Ohio 45435, USA.
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35
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Nilius B, Bíró T. TRPV3: a ‘more than skinny’ channel. Exp Dermatol 2013; 22:447-52. [DOI: 10.1111/exd.12163] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/03/2013] [Indexed: 02/02/2023]
Affiliation(s)
- Bernd Nilius
- Department of Cellular and Molecular Medicine; Laboratory Ion Channel Research; KU Leuven; Leuven Belgium
| | - Tamás Bíró
- DE-MTA “Lendület” Cellular Physiology Research Group; Department of Physiology; University of Debrecen; Medical and Health Science Center; Research Center for Molecular Medicine; Debrecen Hungary
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Bouron A, Oberwinkler J. Contribution of calcium-conducting channels to the transport of zinc ions. Pflugers Arch 2013; 466:381-7. [PMID: 23719866 DOI: 10.1007/s00424-013-1295-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 05/10/2013] [Accepted: 05/10/2013] [Indexed: 10/26/2022]
Abstract
Zinc (Zn) is a vital nutrient participating in a myriad of biological processes. The mechanisms controlling its transport through the plasma membrane are far from being completely understood. Two families of eukaryotic zinc transporters are known to date: the Zip (SLC39) and ZnT (SLC30) proteins. In addition, some types of plasmalemmal calcium (Ca)-conducting channels are implied in the cellular uptake of zinc. These ion channels are currently described as systems dedicated to the transport of Ca (and, to some extent, sodium (Na) ions). However, a growing body of evidence supports the view that some of them can also function as pathways for Zn transport. For instance, voltage-gated Ca channels and some types of glutamate-gated receptors have long been known to allow the entry of Zn. More recently, members of the TRP superfamily, another type of Ca-conducting channels, have been shown to permit the uptake of Zn into eukaryotic cells. The aim of this review article is to present the current knowledge supporting the notion that Ca-conducting channels take part in the plasmalemmal transport of Zn.
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37
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Multiple clinical forms of dehydrated hereditary stomatocytosis arise from mutations in PIEZO1. Blood 2013; 121:3925-35, S1-12. [PMID: 23479567 DOI: 10.1182/blood-2013-02-482489] [Citation(s) in RCA: 227] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Autosomal dominant dehydrated hereditary stomatocytosis (DHSt) usually presents as a compensated hemolytic anemia with macrocytosis and abnormally shaped red blood cells (RBCs). DHSt is part of a pleiotropic syndrome that may also exhibit pseudohyperkalemia and perinatal edema. We identified PIEZO1 as the disease gene for pleiotropic DHSt in a large kindred by exome sequencing analysis within the previously mapped 16q23-q24 interval. In 26 affected individuals among 7 multigenerational DHSt families with the pleiotropic syndrome, 11 heterozygous PIEZO1 missense mutations cosegregated with disease. PIEZO1 is expressed in the plasma membranes of RBCs and its messenger RNA, and protein levels increase during in vitro erythroid differentiation of CD34(+) cells. PIEZO1 is also expressed in liver and bone marrow during human and mouse development. We suggest for the first time a correlation between a PIEZO1 mutation and perinatal edema. DHSt patient red cells with the R2456H mutation exhibit increased ion-channel activity. Functional studies of PIEZO1 mutant R2488Q expressed in Xenopus oocytes demonstrated changes in ion-channel activity consistent with the altered cation content of DHSt patient red cells. Our findings provide direct evidence that R2456H and R2488Q mutations in PIEZO1 alter mechanosensitive channel regulation, leading to increased cation transport in erythroid cells.
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