1
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Michelucci A, Catacuzzeno L. Piezo1, the new actor in cell volume regulation. Pflugers Arch 2024; 476:1023-1039. [PMID: 38581527 PMCID: PMC11166825 DOI: 10.1007/s00424-024-02951-y] [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: 01/11/2024] [Revised: 02/29/2024] [Accepted: 03/20/2024] [Indexed: 04/08/2024]
Abstract
All animal cells control their volume through a complex set of mechanisms, both to counteract osmotic perturbations of the environment and to enable numerous vital biological processes, such as proliferation, apoptosis, and migration. The ability of cells to adjust their volume depends on the activity of ion channels and transporters which, by moving K+, Na+, and Cl- ions across the plasma membrane, generate the osmotic gradient that drives water in and out of the cell. In 2010, Patapoutian's group identified a small family of evolutionarily conserved, Ca2+-permeable mechanosensitive channels, Piezo1 and Piezo2, as essential components of the mechanically activated current that mediates mechanotransduction in vertebrates. Piezo1 is expressed in several tissues and its opening is promoted by a wide range of mechanical stimuli, including membrane stretch/deformation and osmotic stress. Piezo1-mediated Ca2+ influx is used by the cell to convert mechanical forces into cytosolic Ca2+ signals that control diverse cellular functions such as migration and cell death, both dependent on changes in cell volume and shape. The crucial role of Piezo1 in the regulation of cell volume was first demonstrated in erythrocytes, which need to reduce their volume to pass through narrow capillaries. In HEK293 cells, increased expression of Piezo1 was found to enhance the regulatory volume decrease (RVD), the process whereby the cell re-establishes its original volume after osmotic shock-induced swelling, and it does so through Ca2+-dependent modulation of the volume-regulated anion channels. More recently we reported that Piezo1 controls the RVD in glioblastoma cells via the modulation of Ca2+-activated K+ channels. To date, however, the mechanisms through which this mechanosensitive channel controls cell volume and maintains its homeostasis have been poorly investigated and are still far from being understood. The present review aims to provide a broad overview of the literature discussing the recent advances on this topic.
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Affiliation(s)
- A Michelucci
- Department of Chemistry, Biology and Biotechnology, University of Perugia, 06123, Perugia, Italy.
| | - L Catacuzzeno
- Department of Chemistry, Biology and Biotechnology, University of Perugia, 06123, Perugia, Italy.
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2
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López-González I, Oseguera-López I, Castillo R, Darszon A. Influence of extracellular ATP on mammalian sperm physiology. Reprod Fertil Dev 2024; 36:RD23227. [PMID: 38870344 DOI: 10.1071/rd23227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 05/23/2024] [Indexed: 06/15/2024] Open
Abstract
In addition to its central role in cellular metabolism, adenosine 5'-triphosphate (ATP) is an important extracellular signalling molecule involved in various physiological processes. In reproduction, extracellular ATP participates in both autocrine and paracrine paths regulating gametogenesis, gamete maturation and fertilisation. This review focusses on how extracellular ATP modulates sperm physiology with emphasis on the mammalian acrosome reaction. The presence of extracellular ATP in the reproductive tract is primarily determined by the ion channels and transporters that influence its movement within the cells comprising the tract. The main targets of extracellular ATP in spermatozoa are its own transporters, particularly species-specific sperm purinergic receptors. We also discuss notable phenotypes from knock-out mouse models and human Mendelian inheritance related to ATP release mechanisms, along with immunological, proteomic, and functional observations regarding sperm purinergic receptors and their involvement in sperm signalling.
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Affiliation(s)
- I López-González
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad # 2001, Col. Chamilpa, Cuernavaca, Morelos CP 62210, México
| | - I Oseguera-López
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad # 2001, Col. Chamilpa, Cuernavaca, Morelos CP 62210, México
| | - R Castillo
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad # 2001, Col. Chamilpa, Cuernavaca, Morelos CP 62210, México
| | - A Darszon
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad # 2001, Col. Chamilpa, Cuernavaca, Morelos CP 62210, México
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3
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Carrisoza-Gaytan R, Mutchler SM, Carattino F, Soong J, Dalghi MG, Wu P, Wang W, Apodaca G, Satlin LM, Kleyman TR. PIEZO1 is a distal nephron mechanosensor and is required for flow-induced K+ secretion. J Clin Invest 2024; 134:e174806. [PMID: 38426496 PMCID: PMC10904061 DOI: 10.1172/jci174806] [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: 08/14/2023] [Accepted: 01/02/2024] [Indexed: 03/02/2024] Open
Abstract
Ca2+-activated BK channels in renal intercalated cells (ICs) mediate luminal flow-induced K+ secretion (FIKS), but how ICs sense increased flow remains uncertain. We examined whether PIEZO1, a mechanosensitive Ca2+-permeable channel expressed in the basolateral membranes of ICs, is required for FIKS. In isolated cortical collecting ducts (CCDs), the mechanosensitive cation-selective channel inhibitor GsMTx4 dampened flow-induced increases in intracellular Ca2+ concentration ([Ca2+]i), whereas the PIEZO1 activator Yoda1 increased [Ca2+]i and BK channel activity. CCDs from mice fed a high-K+ (HK) diet exhibited a greater Yoda1-dependent increase in [Ca2+]i than CCDs from mice fed a control K+ diet. ICs in CCDs isolated from mice with a targeted gene deletion of Piezo1 in ICs (IC-Piezo1-KO) exhibited a blunted [Ca2+]i response to Yoda1 or increased flow, with an associated loss of FIKS in CCDs. Male IC-Piezo1-KO mice selectively exhibited an increased blood [K+] in response to an oral K+ bolus and blunted urinary K+ excretion following a volume challenge. Whole-cell expression of BKα subunit was reduced in ICs of IC-Piezo1-KO mice fed an HK diet. We conclude that PIEZO1 mediates flow-induced basolateral Ca2+ entry into ICs, is upregulated in the CCD in response to an HK diet, and is necessary for FIKS.
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Affiliation(s)
| | | | - Francisco Carattino
- Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Joanne Soong
- Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Marianela G. Dalghi
- Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Peng Wu
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - WenHui Wang
- Department of Pharmacology, New York Medical College, Valhalla, New York, USA
| | - Gerard Apodaca
- Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Department of Cell Biology and
| | - Lisa M. Satlin
- Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Thomas R. Kleyman
- Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Department of Cell Biology and
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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4
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Coste B, Delmas P. PIEZO Ion Channels in Cardiovascular Functions and Diseases. Circ Res 2024; 134:572-591. [PMID: 38422173 DOI: 10.1161/circresaha.123.322798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
The cardiovascular system provides blood supply throughout the body and as such is perpetually applying mechanical forces to cells and tissues. Thus, this system is primed with mechanosensory structures that respond and adapt to changes in mechanical stimuli. Since their discovery in 2010, PIEZO ion channels have dominated the field of mechanobiology. These have been proposed as the long-sought-after mechanosensitive excitatory channels involved in touch and proprioception in mammals. However, more and more pieces of evidence point to the importance of PIEZO channels in cardiovascular activities and disease development. PIEZO channel-related cardiac functions include transducing hemodynamic forces in endothelial and vascular cells, red blood cell homeostasis, platelet aggregation, and arterial blood pressure regulation, among others. PIEZO channels contribute to pathological conditions including cardiac hypertrophy and pulmonary hypertension and congenital syndromes such as generalized lymphatic dysplasia and xerocytosis. In this review, we highlight recent advances in understanding the role of PIEZO channels in cardiovascular functions and diseases. Achievements in this quickly expanding field should open a new road for efficient control of PIEZO-related diseases in cardiovascular functions.
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Affiliation(s)
- Bertrand Coste
- Centre de Recherche en CardioVasculaire et Nutrition, Aix-Marseille Université - INSERM 1263 - INRAE 1260, Marseille, France
| | - Patrick Delmas
- Centre de Recherche en CardioVasculaire et Nutrition, Aix-Marseille Université - INSERM 1263 - INRAE 1260, Marseille, France
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5
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Cilek N, Ugurel E, Goksel E, Yalcin O. Signaling mechanisms in red blood cells: A view through the protein phosphorylation and deformability. J Cell Physiol 2024; 239:e30958. [PMID: 36748950 DOI: 10.1002/jcp.30958] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 01/07/2023] [Accepted: 01/19/2023] [Indexed: 02/08/2023]
Abstract
Intracellular signaling mechanisms in red blood cells (RBCs) involve various protein kinases and phosphatases and enable rapid adaptive responses to hypoxia, metabolic requirements, oxidative stress, or shear stress by regulating the physiological properties of the cell. Protein phosphorylation is a ubiquitous mechanism for intracellular signal transduction, volume regulation, and cytoskeletal organization in RBCs. Spectrin-based cytoskeleton connects integral membrane proteins, band 3 and glycophorin C to junctional proteins, ankyrin and Protein 4.1. Phosphorylation leads to a conformational change in the protein structure, weakening the interactions between proteins in the cytoskeletal network that confers a more flexible nature for the RBC membrane. The structural organization of the membrane and the cytoskeleton determines RBC deformability that allows cells to change their ability to deform under shear stress to pass through narrow capillaries. The shear stress sensing mechanisms and oxygenation-deoxygenation transitions regulate cell volume and mechanical properties of the membrane through the activation of ion transporters and specific phosphorylation events mediated by signal transduction. In this review, we summarize the roles of Protein kinase C, cAMP-Protein kinase A, cGMP-nitric oxide, RhoGTPase, and MAP/ERK pathways in the modulation of RBC deformability in both healthy and disease states. We emphasize that targeting signaling elements may be a therapeutic strategy for the treatment of hemoglobinopathies or channelopathies. We expect the present review will provide additional insights into RBC responses to shear stress and hypoxia via signaling mechanisms and shed light on the current and novel treatment options for pathophysiological conditions.
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Affiliation(s)
- Neslihan Cilek
- Research Center for Translational Medicine (KUTTAM), Koc University, Istanbul, Turkey
- School of Medicine, Koc University, Istanbul, Turkey
- Graduate School of Health Sciences, Koc University, Istanbul, Turkey
| | - Elif Ugurel
- Research Center for Translational Medicine (KUTTAM), Koc University, Istanbul, Turkey
- School of Medicine, Koc University, Istanbul, Turkey
| | - Evrim Goksel
- Research Center for Translational Medicine (KUTTAM), Koc University, Istanbul, Turkey
- School of Medicine, Koc University, Istanbul, Turkey
- Graduate School of Health Sciences, Koc University, Istanbul, Turkey
| | - Ozlem Yalcin
- Research Center for Translational Medicine (KUTTAM), Koc University, Istanbul, Turkey
- School of Medicine, Koc University, Istanbul, Turkey
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6
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Abbonante V, Karkempetzaki AI, Leon C, Krishnan A, Huang N, Di Buduo CA, Cattaneo D, Ward CMT, Matsuura S, Guinard I, Weber J, De Acutis A, Vozzi G, Iurlo A, Ravid K, Balduini A. Newly identified roles for PIEZO1 mechanosensor in controlling normal megakaryocyte development and in primary myelofibrosis. Am J Hematol 2024; 99:336-349. [PMID: 38165047 PMCID: PMC10922533 DOI: 10.1002/ajh.27184] [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: 08/24/2023] [Revised: 11/10/2023] [Accepted: 11/30/2023] [Indexed: 01/03/2024]
Abstract
Mechanisms through which mature megakaryocytes (Mks) and their progenitors sense the bone marrow extracellular matrix to promote lineage differentiation in health and disease are still partially understood. We found PIEZO1, a mechanosensitive cation channel, to be expressed in mouse and human Mks. Human mutations in PIEZO1 have been described to be associated with blood cell disorders. Yet, a role for PIEZO1 in megakaryopoiesis and proplatelet formation has never been investigated. Here, we show that activation of PIEZO1 increases the number of immature Mks in mice, while the number of mature Mks and Mk ploidy level are reduced. Piezo1/2 knockout mice show an increase in Mk size and platelet count, both at basal state and upon marrow regeneration. Similarly, in human samples, PIEZO1 is expressed during megakaryopoiesis. Its activation reduces Mk size, ploidy, maturation, and proplatelet extension. Resulting effects of PIEZO1 activation on Mks resemble the profile in Primary Myelofibrosis (PMF). Intriguingly, Mks derived from Jak2V617F PMF mice show significantly elevated PIEZO1 expression, compared to wild-type controls. Accordingly, Mks isolated from bone marrow aspirates of JAK2V617F PMF patients show increased PIEZO1 expression compared to Essential Thrombocythemia. Most importantly, PIEZO1 expression in bone marrow Mks is inversely correlated with patient platelet count. The ploidy, maturation, and proplatelet formation of Mks from JAK2V617F PMF patients are rescued upon PIEZO1 inhibition. Together, our data suggest that PIEZO1 places a brake on Mk maturation and platelet formation in physiology, and its upregulation in PMF Mks might contribute to aggravating some hallmarks of the disease.
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Affiliation(s)
- Vittorio Abbonante
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
- Department of Health Sciences, Magna Graecia University of Catanzaro, Catanzaro, Italy
| | - Anastasia Iris Karkempetzaki
- Department of Medicine and Whitaker Cardiovascular Institute, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA
- University of Crete, School of Medicine, Heraklion, Greece
| | - Catherine Leon
- Université de Strasbourg, INSERM, EFS Grand Est, BPPS UMR-S 1255, F-67000 Strasbourg, France
| | - Anandi Krishnan
- Institute of Immunology, Stanford University School of Medicine, Palo Alto, California, United States
| | - Nasi Huang
- Department of Medicine and Whitaker Cardiovascular Institute, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA
| | | | - Daniele Cattaneo
- Hematology Division, Foundation IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Christina Marie Torres Ward
- Department of Medicine and Whitaker Cardiovascular Institute, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA
| | - Shinobu Matsuura
- Department of Medicine and Whitaker Cardiovascular Institute, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA
| | - Ines Guinard
- Université de Strasbourg, INSERM, EFS Grand Est, BPPS UMR-S 1255, F-67000 Strasbourg, France
| | - Josiane Weber
- Université de Strasbourg, INSERM, EFS Grand Est, BPPS UMR-S 1255, F-67000 Strasbourg, France
| | - Aurora De Acutis
- Interdepartmental Research Center "E. Piaggio", University of Pisa, Pisa, Italy
| | - Giovanni Vozzi
- Interdepartmental Research Center "E. Piaggio", University of Pisa, Pisa, Italy
| | - Alessandra Iurlo
- Hematology Division, Foundation IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Katya Ravid
- Department of Medicine and Whitaker Cardiovascular Institute, Boston University Chobanian & Avedisian School of Medicine, Boston, MA, USA
| | - Alessandra Balduini
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
- Department of Biomedical Engineering, Tufts University, Medford, MA, USA
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7
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Bai X, Smith HE, Romero LO, Bell B, Vásquez V, Golden A. A mutation in F-actin polymerization factor suppresses the distal arthrogryposis type 5 PIEZO2 pathogenic variant in Caenorhabditis elegans. Development 2024; 151:dev202214. [PMID: 38349741 PMCID: PMC10911111 DOI: 10.1242/dev.202214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 01/15/2024] [Indexed: 02/15/2024]
Abstract
The mechanosensitive PIEZO channel family has been linked to over 26 disorders and diseases. Although progress has been made in understanding these channels at the structural and functional levels, the underlying mechanisms of PIEZO-associated diseases remain elusive. In this study, we engineered four PIEZO-based disease models using CRISPR/Cas9 gene editing. We performed an unbiased chemical mutagen-based genetic suppressor screen to identify putative suppressors of a conserved gain-of-function variant pezo-1[R2405P] that in human PIEZO2 causes distal arthrogryposis type 5 (DA5; p. R2718P). Electrophysiological analyses indicate that pezo-1(R2405P) is a gain-of-function allele. Using genomic mapping and whole-genome sequencing approaches, we identified a candidate suppressor allele in the C. elegans gene gex-3. This gene is an ortholog of human NCKAP1 (NCK-associated protein 1), a subunit of the Wiskott-Aldrich syndrome protein (WASP)-verprolin homologous protein (WAVE/SCAR) complex, which regulates F-actin polymerization. Depletion of gex-3 by RNAi, or with the suppressor allele gex-3(av259[L353F]), significantly increased brood size and ovulation rate, as well as alleviating the crushed oocyte phenotype of the pezo-1(R2405P) mutant. Expression of GEX-3 in the soma is required to rescue the brood size defects in pezo-1(R2405P) animals. Actin organization and orientation were disrupted and distorted in the pezo-1 mutants. Mutation of gex-3(L353F) partially alleviated these defects. The identification of gex-3 as a suppressor of the pathogenic variant pezo-1(R2405P) suggests that the PIEZO coordinates with the cytoskeleton regulator to maintain the F-actin network and provides insight into the molecular mechanisms of DA5 and other PIEZO-associated diseases.
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Affiliation(s)
- Xiaofei Bai
- Department of Biology, University of Florida, Gainesville, FL 32610, USA
- Genetics Institute, University of Florida, Gainesville, FL 32610, USA
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Harold E. Smith
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Luis O. Romero
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN 38103, USA
- Integrated Biomedical Sciences Graduate Program, College of Graduate Health Sciences, Memphis, TN 38163, USA
| | - Briar Bell
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN 38103, USA
- Integrated Biomedical Sciences Graduate Program, College of Graduate Health Sciences, Memphis, TN 38163, USA
| | - Valeria Vásquez
- Department of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN 38103, USA
| | - Andy Golden
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
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Du Y, Xu B, Li Q, Peng C, Yang K. The role of mechanically sensitive ion channel Piezo1 in bone remodeling. Front Bioeng Biotechnol 2024; 12:1342149. [PMID: 38390363 PMCID: PMC10882629 DOI: 10.3389/fbioe.2024.1342149] [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: 11/21/2023] [Accepted: 01/16/2024] [Indexed: 02/24/2024] Open
Abstract
Piezo1 (2010) was identified as a mechanically activated cation channel capable of sensing various physical forces, such as tension, osmotic pressure, and shear force. Piezo1 mediates mechanosensory transduction in different organs and tissues, including its role in maintaining bone homeostasis. This review aimed to summarize the function and possible mechanism of Piezo1 in the mechanical receptor cells in bone tissue. We found that it is a potential therapeutic target for the treatment of bone diseases.
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Affiliation(s)
- Yugui Du
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, China
| | - Bowen Xu
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, China
| | - Quiying Li
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, China
| | - Chuhan Peng
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, China
| | - Kai Yang
- Department of Orthodontics, School of Stomatology, Capital Medical University, Beijing, China
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9
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Claude-Taupin A, Dupont N. To squeeze or not: Regulation of cell size by mechanical forces in development and human diseases. Biol Cell 2024; 116:e2200101. [PMID: 38059665 DOI: 10.1111/boc.202200101] [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: 10/26/2022] [Revised: 11/27/2023] [Accepted: 11/29/2023] [Indexed: 12/08/2023]
Abstract
Physical constraints, such as compression, shear stress, stretching and tension play major roles during development and tissue homeostasis. Mechanics directly impact physiology, and their alteration is also recognized as having an active role in driving human diseases. Recently, growing evidence has accumulated on how mechanical forces are translated into a wide panel of biological responses, including metabolism and changes in cell morphology. The aim of this review is to summarize and discuss our knowledge on the impact of mechanical forces on cell size regulation. Other biological consequences of mechanical forces will not be covered by this review. Moreover, wherever possible, we also discuss mechanosensors and molecular and cellular signaling pathways upstream of cell size regulation. We finally highlight the relevance of mechanical forces acting on cell size in physiology and human diseases.
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Affiliation(s)
- Aurore Claude-Taupin
- Institut Necker Enfants Malades (INEM), INSERM UMR-S1151, CNRS UMR-S8253, Université Paris Cité, Paris, France
| | - Nicolas Dupont
- Institut Necker Enfants Malades (INEM), INSERM UMR-S1151, CNRS UMR-S8253, Université Paris Cité, Paris, France
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10
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Liang P, Zhang Y, Wan YCS, Ma S, Dong P, Lowry AJ, Francis SJ, Khandelwal S, Delahunty M, Telen MJ, Strouse JJ, Arepally GM, Yang H. Deciphering and disrupting PIEZO1-TMEM16F interplay in hereditary xerocytosis. Blood 2024; 143:357-369. [PMID: 38033286 PMCID: PMC10862370 DOI: 10.1182/blood.2023021465] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 11/07/2023] [Accepted: 11/19/2023] [Indexed: 12/02/2023] Open
Abstract
ABSTRACT Cell-surface exposure of phosphatidylserine (PS) is essential for phagocytic clearance and blood clotting. Although a calcium-activated phospholipid scramblase (CaPLSase) has long been proposed to mediate PS exposure in red blood cells (RBCs), its identity, activation mechanism, and role in RBC biology and disease remain elusive. Here, we demonstrate that TMEM16F, the long-sought-after RBC CaPLSase, is activated by calcium influx through the mechanosensitive channel PIEZO1 in RBCs. PIEZO1-TMEM16F functional coupling is enhanced in RBCs from individuals with hereditary xerocytosis (HX), an RBC disorder caused by PIEZO1 gain-of-function channelopathy. Enhanced PIEZO1-TMEM16F coupling leads to an increased propensity to expose PS, which may serve as a key risk factor for HX clinical manifestations including anemia, splenomegaly, and postsplenectomy thrombosis. Spider toxin GsMTx-4 and antigout medication benzbromarone inhibit PIEZO1, preventing force-induced echinocytosis, hemolysis, and PS exposure in HX RBCs. Our study thus reveals an activation mechanism of TMEM16F CaPLSase and its pathophysiological function in HX, providing insights into potential treatment.
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Affiliation(s)
- Pengfei Liang
- Department of Biochemistry, Duke University School of Medicine, Durham, NC
| | - Yang Zhang
- Department of Biochemistry, Duke University School of Medicine, Durham, NC
| | - Yui Chun S. Wan
- Department of Biochemistry, Duke University School of Medicine, Durham, NC
| | - Shang Ma
- Children’s Research Institute, UT Southwestern Medical Center, Dallas, TX
| | - Ping Dong
- Department of Biochemistry, Duke University School of Medicine, Durham, NC
| | - Augustus J. Lowry
- Department of Biochemistry, Duke University School of Medicine, Durham, NC
| | - Samuel J. Francis
- Department of Surgery, Duke University School of Medicine, Durham, NC
| | - Sanjay Khandelwal
- Department of Medicine, Duke University School of Medicine, Durham, NC
| | - Martha Delahunty
- Department of Medicine, Duke University School of Medicine, Durham, NC
| | - Marilyn J. Telen
- Department of Medicine, Duke University School of Medicine, Durham, NC
| | - John J. Strouse
- Department of Medicine, Duke University School of Medicine, Durham, NC
| | | | - Huanghe Yang
- Department of Biochemistry, Duke University School of Medicine, Durham, NC
- Department of Neurobiology, Duke University School of Medicine, Durham, NC
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11
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Bai X, Golden A. Transmembrane protein 120A (TMEM-120A/TACAN) coordinates with PIEZO channel during Caenorhabditis elegans reproductive regulation. G3 (BETHESDA, MD.) 2023; 14:jkad251. [PMID: 38051962 PMCID: PMC10755168 DOI: 10.1093/g3journal/jkad251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 10/22/2023] [Indexed: 12/07/2023]
Abstract
Membrane protein TMEM120A (also known as TACAN) was presumed to be both a mechanically activated molecule and a lipid-modifying enzyme. TMEM120A has been identified as a negative regulator of the essential excitatory mechanosensitive protein PIEZO2. However, the extent to which TMEM120A mediates PIEZO2's activity during physiological processes remains largely unknown. In this study, we used the Caenorhabditis elegans reproductive tract to explore the functional contribution of tmem-120, the sole TMEM120A/B ortholog, and its genetic interaction with pezo-1 in vivo. tmem-120 was expressed throughout the C. elegans development, particularly in the germline, embryos, and spermatheca. A tmem-120 mutant with a full-length deletion (tmem-120Δ) displayed deformed germline, maternal sterility, and a reduced brood size. In vivo live imaging revealed that pinched zygotes were frequently observed in the uterus of tmem-120Δ mutant animals, suggesting damage during spermathecal contraction. We then employed the auxin-inducible degradation system to degrade TMEM-120 protein in all somatic tissues or the germline, both of which resulted in reduced brood sizes. These findings suggested that multiple inputs of tmem-120 from different tissues regulate reproduction. Lastly, the loss of tmem-120 alleviated the brood size reduction and defective sperm navigation behavior in the pezo-1Δ mutant. Overall, our findings reveal a role for tmem-120 in regulating reproductive physiology in C. elegans, and suggest an epistatic interaction between pezo-1 and tmem-120 when governing proper reproduction.
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Affiliation(s)
- Xiaofei Bai
- Department of Biology, University of Florida, Gainesville, FL 32610, USA
- Genetics Institute, University of Florida, Gainesville, FL 32610, USA
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Andy Golden
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
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12
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Allegrini B, NGuyen LD, Mignotet M, Etchebest C, Fenneteau O, Platon J, Lambilliotte A, Guizouarn H, Da Costa L. Next generation sequencing (NGS) interest in deciphering erythrocyte molecular defects' association in red cell disorders: Clinical and erythrocyte phenotypes of patients with mutations inheritance in PIEZO1, Spectrin ß1, RhAG and SLC4A1. Blood Cells Mol Dis 2023; 103:102780. [PMID: 37516005 DOI: 10.1016/j.bcmd.2023.102780] [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: 04/24/2023] [Revised: 07/06/2023] [Accepted: 07/13/2023] [Indexed: 07/31/2023]
Abstract
We report here an instructive case referred at 16 months-old for exploration of hemolysis without anemia (compensated anemia with reticulocytosis). The biology tests confirmed the hemolysis with increased total and indirect bilirubin. The usual hemolysis diagnosis tests were normal (DAT, G6PD, PK, Hb electrophoresis) except cytology and ektacytometry suggesting an association of multiple red blood cell (RBC) membrane disorders. This led us to propose a molecular screening analysis using targeted-Next Generation Sequencing (t-NGS) with a capture technique on 93 genes involved in RBC and erythropoiesis defects. We identified 4 missense heterozygous allelic variations, all of them were described without any significance (VUS) in the SLC4A1, RhAG, PIEZO1 and SPTB genes. The study of the familial cosegregation and research functional tests allowed to decipher the role of at least two by two genes in the phenotype and the hemolytic disease of this young patient. Specialized t-NGS panel (or virtual exome/genome sequencing) in a disease-referent laboratory and the motivated collaboration of clinicians, biologists and scientists should be the gold standard for improving the diagnosis of the patients affected with RBC diseases or rare inherited anemias.
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Affiliation(s)
- Benoit Allegrini
- Université Côte d'Azur, CNRS, Inserm, Institut Biologie Valrose, Nice, France
| | | | - Morgane Mignotet
- Université Côte d'Azur, CNRS, Inserm, Institut Biologie Valrose, Nice, France
| | - Catherine Etchebest
- Inserm U1134, France; Laboratory of Excellence for RBCs, LABEX GR-Ex, 75015 Paris, France
| | - Odile Fenneteau
- AP-HP, Service Hématologie Biologique, Hôpital R. Debré, Paris, France
| | - Jessica Platon
- HEMATIM EA4666, Université Picardie Jules Vernes, Amiens, France
| | | | - Hélène Guizouarn
- Université Côte d'Azur, CNRS, Inserm, Institut Biologie Valrose, Nice, France; Laboratory of Excellence for RBCs, LABEX GR-Ex, 75015 Paris, France.
| | - Lydie Da Costa
- AP-HP, Service Hématologie Biologique, Hôpital R. Debré, Paris, France; HEMATIM EA4666, Université Picardie Jules Vernes, Amiens, France; Université Paris, Paris, France; Inserm U1134, France
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13
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Stewart GW, Gibson JS, Rees DC. The cation-leaky hereditary stomatocytosis syndromes: A tale of six proteins. Br J Haematol 2023; 203:509-522. [PMID: 37679660 DOI: 10.1111/bjh.19093] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/13/2023] [Accepted: 08/22/2023] [Indexed: 09/09/2023]
Abstract
This review concerns a series of dominantly inherited haemolytic anaemias in which the membrane of the erythrocyte 'leaks' the univalent cations, compromising the osmotic stability of the cell. The majority of the conditions are explained by mutations in one of six genes, coding for multispanning membrane proteins of different structure and function. These are: RhAG, coding for an ammonium carrier; SLC4A1, coding for the band 3 anion exchanger; PIEZO1, coding for a mechanosensitive cation channel; GLUT1, coding for a glucose transporter; KCNN4, coding for an internal-calcium-activated potassium channel; and ABCB6, coding for a porphyrin transporter. This review describes the five clinical syndromes associated with genetic defects in these genes and their variable genotype/phenotype relationships.
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Affiliation(s)
- Gordon W Stewart
- Division of Medicine, Faculty of Medical Sciences, University College London, London, UK
| | - John S Gibson
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - David C Rees
- Haematological Medicine, Kings College London, London, UK
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14
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Jamwal M, Singh N, Sharma P, Duseja A, Lad DP, Malhotra P, Das R. Dehydrated hereditary stomatocytosis masquerading as primary haemochromatosis: a diagnostic challenge. Pathology 2023; 55:876-879. [PMID: 37393146 DOI: 10.1016/j.pathol.2023.03.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 03/15/2023] [Accepted: 03/28/2023] [Indexed: 07/03/2023]
Affiliation(s)
- Manu Jamwal
- Department of Hematology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Namrata Singh
- Department of Hematology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Prashant Sharma
- Department of Hematology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Ajay Duseja
- Department of Hepatology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Deepesh P Lad
- Department of Clinical Hematology and Medical Oncology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Pankaj Malhotra
- Department of Clinical Hematology and Medical Oncology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Reena Das
- Department of Hematology, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
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15
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Choi YJ, Kim H, Ahn WK, Lee ST, Han JW, Choi JR, Lyu CJ, Hahn S, Shin S. Diagnostic yield of targeted next-generation sequencing for pediatric hereditary hemolytic anemia. BMC Med Genomics 2023; 16:215. [PMID: 37697358 PMCID: PMC10496260 DOI: 10.1186/s12920-023-01648-y] [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: 06/08/2023] [Accepted: 08/28/2023] [Indexed: 09/13/2023] Open
Abstract
BACKGROUND Hereditary hemolytic anemia (HHA) refers to a heterogeneous group of genetic disorders that share one common feature: destruction of circulating red blood cells (RBCs). The destruction of RBCs may be due to membranopathies, enzymopathies, or hemoglobinopathies. Because these are genetic disorders, incorporation of next-generation sequencing (NGS) has facilitated the diagnostic process of HHA. METHOD Genetic data from 29 patients with suspected hereditary anemia in a tertiary hospital were retrospectively reviewed to evaluate the efficacy of NGS on hereditary anemia diagnosis. Targeted NGS was performed with custom probes for 497 genes associated with hematologic disorders. After genomic DNA was extracted from peripheral blood, prepared libraries were hybridized with capture probes and sequenced using NextSeq 550Dx (Illumina, San Diego, CA, USA). RESULT Among the 29 patients, ANK1 variants were detected in five, four of which were pathogenic or likely pathogenic variants. SPTB variants were detected in six patients, five of which were classified as pathogenic or likely pathogenic variants. We detected g6pd pathogenic and spta1 likely pathogenic variants in two patients and one patient, respectively. Whole-gene deletions in both HBA1 and HBA2 were detected in two patients, while only HBA2 deletion was detected in one patient. One likely pathogenic variant in PLKR was detected in one patient, and one likely pathogenic variant in ALAS2 was detected in another. CONCLUSION Here, NGS played a critical role in definitive diagnosis in 18 out of 29 patients (62.07%) with suspected HHA. Thus, its incorporation into the diagnostic workflow is crucial.
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Affiliation(s)
- Yu Jeong Choi
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hongkyung Kim
- Department of Laboratory Medicine, Chung-Ang University Gwangmyung Hospital, Chung-Ang University College of Medicine, Gwangmyung, Republic of Korea
| | - Won Kee Ahn
- Department of Pediatric Hematology-Oncology, Yonsei Cancer Center, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Seung-Tae Lee
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
- Dxome, Seoul, Republic of Korea
| | - Jung Woo Han
- Department of Pediatric Hematology-Oncology, Yonsei Cancer Center, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Jong Rak Choi
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
- Dxome, Seoul, Republic of Korea
| | - Chuhl Joo Lyu
- Department of Pediatric Hematology-Oncology, Yonsei Cancer Center, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Seungmin Hahn
- Department of Pediatric Hematology-Oncology, Yonsei Cancer Center, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
| | - Saeam Shin
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.
- Department of Laboratory Medicine, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
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16
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Shome DK, Das P, Akbar GA, Taha S, Radhi A, Al-Saad K, Helmy R. Molecular insights into hereditary elliptocytosis and pyropoikilocytosis: NGS uncovers multiple potential candidate genes. Ann Hematol 2023; 102:2343-2351. [PMID: 37400730 DOI: 10.1007/s00277-023-05337-9] [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: 03/16/2023] [Accepted: 06/20/2023] [Indexed: 07/05/2023]
Abstract
Hereditary elliptocytosis (HE) and pyropoikilocytosis (HPP) are considered a group of hemolytic anemias (HE/HPP) due to inherited abnormalities of erythrocyte membrane proteins with a worldwide distribution. Most cases are associated with molecular abnormalities linked to spectrin, band 4.1, and ankyrin. The present study aimed to identify significant molecular signatures on a target panel of 8 genes using whole exome sequencing (WES) in 9 Bahraini patients with elliptocytosis. Case selection was based on presence of anemia not associated with iron deficiency or hemoglobinopathy and demonstrating > 50% elliptocytes in blood smears. The c.779 T > C mutation of SPTA1 (Spectrin alpha), which is a known deleterious missense mutation that inhibits normal association of spectrin molecules to form tetramers, was seen in 4 patients in homozygous (n = 1) and heterozygous (n = 3) states. The αLELY abnormality in association with compound heterozygous mutations in SPTA1 was present in 5 patients (2 associated with the SPTA1 c.779 T > C variant; 3 with c.3487 T > G and various other SPTA1 mutations of uncertain/unknown significance). Seven patients had SPTB (Spectrin beta) mutations, predicted as likely benign by in silico analysis. A novel EPB41 (Erythrocyte Membrane Protein Band 4.1) mutation with potential deleterious impact was also seen. Finally, 2 cases showed an InDel (insertion-deletion mutations) abnormality in the gene that codes for the mechanosensitive ion-channel PIEZO (Piezo Type Mechanosensitive Ion Channel Component 1). PIEZO mutations are reported to cause red cell dehydration but have not been previously described in HE/HPP. Results of this study confirm the involvement of previously reported abnormalities in SPTA1 and suggest possible involvement of other candidate genes in a disorder involving polygenic interactions.
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Affiliation(s)
- Durjoy K Shome
- Department of Pathology, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain.
- Education & Proficiency Center, King Hamad University Hospital, Manama, Kingdom of Bahrain.
| | - Priya Das
- Education & Proficiency Center, King Hamad University Hospital, Manama, Kingdom of Bahrain.
| | - Ghadir A Akbar
- Department of Pathology, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain
| | - Safa Taha
- Princess Al-Jawhara Centre for Molecular Medicine, Genetics and Inherited Diseases, Arabian Gulf University, Manama, Kingdom of Bahrain
| | - Ameera Radhi
- Department of Pathology, Salmaniya Medical Complex, Manama, Kingdom of Bahrain
| | - Khulood Al-Saad
- Department of Pediatrics, Salmaniya Medical Complex, Manama, Kingdom of Bahrain
| | - Rehab Helmy
- Department of Pathology, Blood Bank and Laboratory Medicine, King Hamad University Hospital, Manama, Kingdom of Bahrain
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17
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Ozkan AD, Wijerathne TD, Gettas T, Lacroix JJ. Force-induced motions of the PIEZO1 blade probed with fluorimetry. Cell Rep 2023; 42:112837. [PMID: 37471225 PMCID: PMC10530446 DOI: 10.1016/j.celrep.2023.112837] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 06/15/2023] [Accepted: 07/05/2023] [Indexed: 07/22/2023] Open
Abstract
Mechanical forces are thought to activate mechanosensitive PIEZO channels by changing the conformation of a large transmembrane blade domain. Yet, whether different stimuli induce identical conformational changes in this domain remains unclear. Here, we repurpose a cyclic permuted green fluorescent protein as a conformation-sensitive probe to track local rearrangements along the PIEZO1 blade. Two independent probes, one inserted in an extracellular site distal to the pore and the other in a distant intracellular proximal position, elicit sizable fluorescence signals when the tagged channels activate in response to fluid shear stress of low intensity. Neither cellular indentations nor osmotic swelling of the cell elicit detectable fluorescence signals from either probe, despite the ability of these stimuli to activate the tagged channels. High-intensity flow stimuli are ineffective at eliciting fluorescence signals from either probe. Together, these findings suggest that low-intensity fluid shear stress causes a distinct form of mechanical stress to the cell.
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Affiliation(s)
- Alper D Ozkan
- Department of Pharmaceutical Microbiology, Bahçeşehir University, Yıldız, Çırağan Cd, 34349 Beşiktaş/İstanbul, Turkey
| | - Tharaka D Wijerathne
- Department of Basic Medical Sciences, Western University of Health Sciences, 309 E. Second St, Pomona, CA 91766, USA
| | - Tina Gettas
- Department of Basic Medical Sciences, Western University of Health Sciences, 309 E. Second St, Pomona, CA 91766, USA
| | - Jérôme J Lacroix
- Department of Basic Medical Sciences, Western University of Health Sciences, 309 E. Second St, Pomona, CA 91766, USA.
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18
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Vetro A, Pelorosso C, Balestrini S, Masi A, Hambleton S, Argilli E, Conti V, Giubbolini S, Barrick R, Bergant G, Writzl K, Bijlsma EK, Brunet T, Cacheiro P, Mei D, Devlin A, Hoffer MJV, Machol K, Mannaioni G, Sakamoto M, Menezes MP, Courtin T, Sherr E, Parra R, Richardson R, Roscioli T, Scala M, von Stülpnagel C, Smedley D, Torella A, Tohyama J, Koichihara R, Hamada K, Ogata K, Suzuki T, Sugie A, van der Smagt JJ, van Gassen K, Valence S, Vittery E, Malone S, Kato M, Matsumoto N, Ratto GM, Guerrini R. Stretch-activated ion channel TMEM63B associates with developmental and epileptic encephalopathies and progressive neurodegeneration. Am J Hum Genet 2023; 110:1356-1376. [PMID: 37421948 PMCID: PMC10432263 DOI: 10.1016/j.ajhg.2023.06.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 06/13/2023] [Accepted: 06/13/2023] [Indexed: 07/10/2023] Open
Abstract
By converting physical forces into electrical signals or triggering intracellular cascades, stretch-activated ion channels allow the cell to respond to osmotic and mechanical stress. Knowledge of the pathophysiological mechanisms underlying associations of stretch-activated ion channels with human disease is limited. Here, we describe 17 unrelated individuals with severe early-onset developmental and epileptic encephalopathy (DEE), intellectual disability, and severe motor and cortical visual impairment associated with progressive neurodegenerative brain changes carrying ten distinct heterozygous variants of TMEM63B, encoding for a highly conserved stretch-activated ion channel. The variants occurred de novo in 16/17 individuals for whom parental DNA was available and either missense, including the recurrent p.Val44Met in 7/17 individuals, or in-frame, all affecting conserved residues located in transmembrane regions of the protein. In 12 individuals, hematological abnormalities co-occurred, such as macrocytosis and hemolysis, requiring blood transfusions in some. We modeled six variants (p.Val44Met, p.Arg433His, p.Thr481Asn, p.Gly580Ser, p.Arg660Thr, and p.Phe697Leu), each affecting a distinct transmembrane domain of the channel, in transfected Neuro2a cells and demonstrated inward leak cation currents across the mutated channel even in isotonic conditions, while the response to hypo-osmotic challenge was impaired, as were the Ca2+ transients generated under hypo-osmotic stimulation. Ectopic expression of the p.Val44Met and p.Gly580Cys variants in Drosophila resulted in early death. TMEM63B-associated DEE represents a recognizable clinicopathological entity in which altered cation conductivity results in a severe neurological phenotype with progressive brain damage and early-onset epilepsy associated with hematological abnormalities in most individuals.
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Affiliation(s)
- Annalisa Vetro
- Neuroscience Department, Meyer Children's Hospital IRCCS, Florence, Italy
| | | | - Simona Balestrini
- Neuroscience Department, Meyer Children's Hospital IRCCS, Florence, Italy; University of Florence, Florence, Italy
| | - Alessio Masi
- Department of Neuroscience, Psychology, Drug Research and Child Health (NeuroFarBa), Section of Pharmacology and Toxicology, University of Florence, Florence, Italy
| | - Sophie Hambleton
- Newcastle University Translational and Clinical Research Institute, Newcastle upon Tyne, UK; Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Emanuela Argilli
- Department of Neurology and Institute of Human Genetics and Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, USA
| | - Valerio Conti
- Neuroscience Department, Meyer Children's Hospital IRCCS, Florence, Italy
| | - Simone Giubbolini
- National Enterprise for NanoScience and NanoTechnology (NEST), Istituto Nanoscienze, Consiglio Nazionale delle Ricerche (CNR) and Scuola Normale Superiore Pisa, Pisa, Italy
| | - Rebekah Barrick
- Division of Metabolic Disorders, Children's Hospital of Orange County (CHOC), Orange, CA, USA
| | - Gaber Bergant
- Clinical Institute of Genomic Medicine, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Karin Writzl
- Clinical Institute of Genomic Medicine, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Emilia K Bijlsma
- Department of Clinical Genetics, Leiden University Medical Center, Leiden, the Netherlands
| | - Theresa Brunet
- Institute of Human Genetics, School of Medicine, Technical University Munich, Munich, Germany; Department of Pediatric Neurology and Developmental Medicine, Dr. v. Hauner Children's Hospital, LMU - University of Munich, München, Germany
| | - Pilar Cacheiro
- William Harvey Research Institute, Queen Mary University of London, London, UK
| | - Davide Mei
- Neuroscience Department, Meyer Children's Hospital IRCCS, Florence, Italy
| | - Anita Devlin
- Newcastle University Translational and Clinical Research Institute, Newcastle upon Tyne, UK; Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Mariëtte J V Hoffer
- Department of Clinical Genetics, Leiden University Medical Center, Leiden, the Netherlands
| | - Keren Machol
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Guido Mannaioni
- Department of Neuroscience, Psychology, Drug Research and Child Health (NeuroFarBa), Section of Pharmacology and Toxicology, University of Florence, Florence, Italy
| | - Masamune Sakamoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama 236-0004 Japan
| | - Manoj P Menezes
- Department of Neurology, The Children's Hospital at Westmead and the Children's Hospital at Westmead Clinical School, University of Sydney, Westmead NSW, Australia
| | - Thomas Courtin
- Sorbonne Université, Institut du Cerveau - Paris Brain Institute - ICM, Inserm, CNRS, Paris, France; Assistance Publique Hôpitaux de Paris, Hôpital Pitié-Salpêtrière, Département de Génétique, DMU BioGeM, Paris, France
| | - Elliott Sherr
- Department of Neurology and Institute of Human Genetics and Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, USA
| | - Riccardo Parra
- National Enterprise for NanoScience and NanoTechnology (NEST), Istituto Nanoscienze, Consiglio Nazionale delle Ricerche (CNR) and Scuola Normale Superiore Pisa, Pisa, Italy
| | - Ruth Richardson
- Northern Genetics Service, Newcastle upon Tyne hospitals NHS Foundation Trust, Newcastle, UK
| | - Tony Roscioli
- New South Wales Health Pathology Randwick Genomics, Prince of Wales Hospital, Sydney, NSW 2031, Australia; Neuroscience Research Australia, Sydney, NSW 2031, Australia
| | - Marcello Scala
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa, Genoa, Italy
| | - Celina von Stülpnagel
- Department of Pediatric Neurology and Developmental Medicine, Dr. v. Hauner Children's Hospital, LMU - University of Munich, München, Germany; Institute for Transition, Rehabilitation and Palliation, Paracelsus Medical University, Salzburg, Austria
| | - Damian Smedley
- William Harvey Research Institute, Queen Mary University of London, London, UK
| | - Annalaura Torella
- Department of Precision Medicine, University "Luigi Vanvitelli," Naples, Italy; Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy
| | - Jun Tohyama
- Department of Child Neurology, Nishi-Niigata Chuo National Hospital, Niigata 950-2085, Japan
| | - Reiko Koichihara
- Department for Child Health and Human Development, Saitama Children's Medical Center, Saitama 330-8777, Japan
| | - Keisuke Hamada
- Department of Biochemistry, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan
| | - Kazuhiro Ogata
- Department of Biochemistry, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan
| | - Takashi Suzuki
- School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Kanagawa, Japan
| | - Atsushi Sugie
- Brain Research Institute, Niigata University, Niigata 951-8585, Japan
| | | | - Koen van Gassen
- Department of Genetics, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Stephanie Valence
- Centre de référence Maladies Rares "Déficience intellectuelle de cause rare," Sorbonne Université, Paris, France; Département de Neuropédiatrie, Hôpital Armand Trousseau, APHP, Sorbonne Université, Paris, France
| | - Emma Vittery
- Northern Genetics Service, Newcastle upon Tyne hospitals NHS Foundation Trust, Newcastle, UK
| | - Stephen Malone
- Department of Neurosciences, Queensland Children's Hospital, Brisbane QLD, Australia; Centre for Advanced Imaging, University of Queensland, St Lucia QLD, Australia
| | - Mitsuhiro Kato
- Department of Pediatrics, Showa University School of Medicine, Tokyo 142-8666, Japan
| | - Naomichi Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama 236-0004 Japan
| | - Gian Michele Ratto
- National Enterprise for NanoScience and NanoTechnology (NEST), Istituto Nanoscienze, Consiglio Nazionale delle Ricerche (CNR) and Scuola Normale Superiore Pisa, Pisa, Italy; Istituto Neuroscienze CNR, Padova, Italy
| | - Renzo Guerrini
- Neuroscience Department, Meyer Children's Hospital IRCCS, Florence, Italy; University of Florence, Florence, Italy.
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19
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Bai X, Smith HE, Romero LO, Bell B, Vásquez V, Golden A. Mutation in F-actin Polymerization Factor Suppresses Distal Arthrogryposis Type 5 (DA5) PIEZO2 Pathogenic Variant in Caenorhabditis elegans. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.24.550416. [PMID: 37546771 PMCID: PMC10402071 DOI: 10.1101/2023.07.24.550416] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
The mechanosensitive PIEZO channel family has been linked to over 26 disorders and diseases. Although progress has been made in understanding these channels at the structural and functional levels, the underlying mechanisms of PIEZO-associated diseases remain elusive. In this study, we engineered four PIEZO-based disease models using CRISPR/Cas9 gene editing. We performed an unbiased chemical mutagen-based genetic suppressor screen to identify putative suppressors of a conserved gain-of-function variant pezo-1[R2405P] that in human PIEZO2 causes distal arthrogryposis type 5 (DA5; p. R2718P). Electrophysiological analyses indicate that pezo-1(R2405P) is a gain-of-function allele. Using genomic mapping and whole genome sequencing approaches, we identified a candidate suppressor allele in the C. elegans gene gex-3. This gene is an ortholog of human NCKAP1 (NCK-associated protein 1), a subunit of the Wiskott-Aldrich syndrome protein (WASP)-verprolin homologous protein (WAVE/SCAR) complex, which regulates F-actin polymerization. Depletion of gex-3 by RNAi, or with the suppressor allele gex-3(av259[L353F]) , significantly restored the small brood size and low ovulation rate, as well as alleviated the crushed oocyte phenotype of the pezo-1(R2405P) mutant. Auxin-inducible degradation of GEX-3 revealed that only somatic-specific degradation of GEX-3 restored the reduced brood size in the pezo-1(R2405P) mutants. Additionally, actin organization and orientation were disrupted and distorted in the pezo-1 mutants. Mutation of gex-3(L353F) partially alleviated these defects. The identification of gex-3 as a suppressor of the pathogenic variant pezo-1(R2405P) suggests that the cytoskeleton plays an important role in regulating PIEZO channel activity and provides insight into the molecular mechanisms of DA5 and other PIEZO-associated diseases.
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20
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Yaganoglu S, Kalyviotis K, Vagena-Pantoula C, Jülich D, Gaub BM, Welling M, Lopes T, Lachowski D, Tang SS, Del Rio Hernandez A, Salem V, Müller DJ, Holley SA, Vermot J, Shi J, Helassa N, Török K, Pantazis P. Highly specific and non-invasive imaging of Piezo1-dependent activity across scales using GenEPi. Nat Commun 2023; 14:4352. [PMID: 37468521 PMCID: PMC10356793 DOI: 10.1038/s41467-023-40134-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 07/11/2023] [Indexed: 07/21/2023] Open
Abstract
Mechanosensing is a ubiquitous process to translate external mechanical stimuli into biological responses. Piezo1 ion channels are directly gated by mechanical forces and play an essential role in cellular mechanotransduction. However, readouts of Piezo1 activity are mainly examined by invasive or indirect techniques, such as electrophysiological analyses and cytosolic calcium imaging. Here, we introduce GenEPi, a genetically-encoded fluorescent reporter for non-invasive optical monitoring of Piezo1-dependent activity. We demonstrate that GenEPi has high spatiotemporal resolution for Piezo1-dependent stimuli from the single-cell level to that of the entire organism. GenEPi reveals transient, local mechanical stimuli in the plasma membrane of single cells, resolves repetitive contraction-triggered stimulation of beating cardiomyocytes within microtissues, and allows for robust and reliable monitoring of Piezo1-dependent activity in vivo. GenEPi will enable non-invasive optical monitoring of Piezo1 activity in mechanochemical feedback loops during development, homeostatic regulation, and disease.
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Affiliation(s)
- Sine Yaganoglu
- Department of Biosystems Science and Engineering, Eidgenössische Technische Hochschule (ETH) Zurich, Basel, Switzerland
| | | | | | - Dörthe Jülich
- Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT, USA
| | - Benjamin M Gaub
- Department of Biosystems Science and Engineering, Eidgenössische Technische Hochschule (ETH) Zurich, Basel, Switzerland
| | - Maaike Welling
- Department of Biosystems Science and Engineering, Eidgenössische Technische Hochschule (ETH) Zurich, Basel, Switzerland
- Department of Bioengineering, Imperial College London, London, UK
| | - Tatiana Lopes
- Section of Investigative Medicine, Department of Metabolism, Digestion, and Reproduction, Imperial College London, London, UK
| | | | - See Swee Tang
- Department of Bioengineering, Imperial College London, London, UK
| | | | - Victoria Salem
- Department of Bioengineering, Imperial College London, London, UK
| | - Daniel J Müller
- Department of Biosystems Science and Engineering, Eidgenössische Technische Hochschule (ETH) Zurich, Basel, Switzerland
| | - Scott A Holley
- Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT, USA
| | - Julien Vermot
- Department of Bioengineering, Imperial College London, London, UK
| | - Jian Shi
- Leeds Institute of Cardiovascular and Metabolic Medicine, LIGHT Laboratories, University of Leeds, Leeds, UK
| | - Nordine Helassa
- Molecular and Clinical Sciences Research Institute, St. George's, University of London, London, UK
- Department of Biochemistry, Cell and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
| | - Katalin Török
- Molecular and Clinical Sciences Research Institute, St. George's, University of London, London, UK
| | - Periklis Pantazis
- Department of Biosystems Science and Engineering, Eidgenössische Technische Hochschule (ETH) Zurich, Basel, Switzerland.
- Department of Bioengineering, Imperial College London, London, UK.
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21
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Hatem A, Poussereau G, Gachenot M, Pérès L, Bouyer G, Egée S. Dual action of Dooku1 on PIEZO1 channel in human red blood cells. Front Physiol 2023; 14:1222983. [PMID: 37492641 PMCID: PMC10365639 DOI: 10.3389/fphys.2023.1222983] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 06/27/2023] [Indexed: 07/27/2023] Open
Abstract
PIEZO1 is a mechanosensitive non-selective cation channel, present in many cell types including Red Blood Cells (RBCs). Together with the Gárdos channel, PIEZO1 forms in RBCs a tandem that participates in the rapid adjustment of the cell volume. The pharmacology allowing functional studies of the roles of PIEZO1 has only recently been developed, with Yoda1 as a widely used PIEZO1 agonist. In 2018, Yoda1 analogues were developed, as a step towards an improved understanding of PIEZO1 roles and functions. Among these, Dooku1 was the most promising antagonist of Yoda1-induced effects, without having any ability to activate PIEZO1 channels. Since then, Dooku1 has been used in various cell types to antagonize Yoda1 effects. In the present study using RBCs, Dooku1 shows an apparent IC50 on Yoda1 effects of 90.7 µM, one order of magnitude above the previously reported data on other cell types. Unexpectedly, it was able, by itself, to produce entry of calcium sufficient to trigger Gárdos channel activation. Moreover, Dooku1 evoked a rise in intracellular sodium concentrations, suggesting that it targets a non-selective cation channel. Dooku1 effects were abolished upon using GsMTx4, a known mechanosensitive channel blocker, indicating that Dooku1 likely targets PIEZO1. Our observations lead to the conclusion that Dooku1 behaves as a PIEZO1 agonist in the RBC membrane, similarly to Yoda1 but with a lower potency. Taken together, these results show that the pharmacology of PIEZO1 in RBCs must be interpreted with care especially due to the unique characteristics of RBC membrane and associated cytoskeleton.
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Affiliation(s)
- Aline Hatem
- Sorbonne Université, CNRS, UMR8227 LBI2M, Station Biologique de Roscoff, Roscoff, France
- Laboratory of Excellence GR-Ex, Paris, France
| | - Gwendal Poussereau
- Sorbonne Université, CNRS, UMR8227 LBI2M, Station Biologique de Roscoff, Roscoff, France
| | - Martin Gachenot
- Sorbonne Université, CNRS, FR2424, Station Biologique de Roscoff, Roscoff, France
| | - Laurent Pérès
- Sorbonne Université, CNRS, UMR8227 LBI2M, Station Biologique de Roscoff, Roscoff, France
- Laboratory of Excellence GR-Ex, Paris, France
| | - Guillaume Bouyer
- Sorbonne Université, CNRS, UMR8227 LBI2M, Station Biologique de Roscoff, Roscoff, France
- Laboratory of Excellence GR-Ex, Paris, France
| | - Stéphane Egée
- Sorbonne Université, CNRS, UMR8227 LBI2M, Station Biologique de Roscoff, Roscoff, France
- Laboratory of Excellence GR-Ex, Paris, France
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22
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Andolfo I, Monaco V, Cozzolino F, Rosato BE, Marra R, Cerbone V, Pinto VM, Forni GL, Unal S, Iolascon A, Monti M, Russo R. Proteome alterations in erythrocytes with PIEZO1 gain-of-function mutations. Blood Adv 2023; 7:2681-2693. [PMID: 36595486 PMCID: PMC10333744 DOI: 10.1182/bloodadvances.2022008673] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 12/19/2022] [Accepted: 12/19/2022] [Indexed: 01/04/2023] Open
Abstract
Gain-of-function mutations in PIEZO1 cause dehydrated hereditary stomatocytosis (DHS) or hereditary xerocytosis, an autosomal dominant hemolytic anemia characterized by high reticulocyte count, a tendency to macrocytosis, and mild jaundice, as well as by other variably penetrant clinical features, such as perinatal edema, severe thromboembolic complications after splenectomy, and hepatic iron overload. PIEZO1 mutations in DHS lead to slowed inactivation kinetics of the ion channel and/or facilitation of channel opening in response to physiological stimuli. To characterize the alterations of red blood cell proteome in patients with mutated PIEZO1, we used a differential approach to compare the proteome of patients with DHS (16 patients from 13 unrelated ancestries) vs healthy individuals. We identified new components in the regulation of the complex landscape of erythrocytes ion and volume balance mediated by PIEZO1. Specifically, the main impaired processes in patients with DHS were ion homeostasis, transmembrane transport, regulation of vesicle-mediated transport, and the proteasomal catabolic process. Functional assays demonstrated coexpression of PIEZO1 and band 3 when PIEZO1 was activated. Moreover, the alteration of the vesicle-mediated transport was functionally demonstrated by an increased vesiculation rate in patients with DHS compared with healthy controls. This finding also provides an explanation of the pathogenetic mechanism underlying the increased thrombotic rate observed in these patients. Finally, the newly identified proteins, involved in the intracellular signaling pathways altered by PIEZO1 mutations, could be used in the future as potential druggable targets in DHS.
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Affiliation(s)
- Immacolata Andolfo
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli Federico II, Napoli, Italy
- CEINGE Biotecnologie Avanzate, Franco Salvatore, Napoli, Italy
| | - Vittoria Monaco
- CEINGE Biotecnologie Avanzate, Franco Salvatore, Napoli, Italy
- Dipartimento di Scienze Chimiche, Università degli Studi di Napoli Federico II, Napoli, Italy
| | - Flora Cozzolino
- CEINGE Biotecnologie Avanzate, Franco Salvatore, Napoli, Italy
- Dipartimento di Scienze Chimiche, Università degli Studi di Napoli Federico II, Napoli, Italy
| | - Barbara Eleni Rosato
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli Federico II, Napoli, Italy
- CEINGE Biotecnologie Avanzate, Franco Salvatore, Napoli, Italy
| | - Roberta Marra
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli Federico II, Napoli, Italy
- CEINGE Biotecnologie Avanzate, Franco Salvatore, Napoli, Italy
| | | | - Valeria Maria Pinto
- Centro della Microcitemia, delle Anemie Congenite e dei Disordini del Metabolismo del Ferro, EO Ospedali Galliera, Genoa, Italy
| | - Gian Luca Forni
- Centro della Microcitemia, delle Anemie Congenite e dei Disordini del Metabolismo del Ferro, EO Ospedali Galliera, Genoa, Italy
| | - Sule Unal
- Research Center for Fanconi Anemia and Other Inherited Bone Marrow Failure Syndromes, Department of Pediatric Hematology, Hacettepe University, Ankara, Turkey
| | - Achille Iolascon
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli Federico II, Napoli, Italy
- CEINGE Biotecnologie Avanzate, Franco Salvatore, Napoli, Italy
| | - Maria Monti
- CEINGE Biotecnologie Avanzate, Franco Salvatore, Napoli, Italy
- Dipartimento di Scienze Chimiche, Università degli Studi di Napoli Federico II, Napoli, Italy
| | - Roberta Russo
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli Federico II, Napoli, Italy
- CEINGE Biotecnologie Avanzate, Franco Salvatore, Napoli, Italy
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23
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Hendargo KJ, Patel AO, Chukwudozie OS, Moreno-Hagelsieb G, Christen JA, Medrano-Soto A, Saier MH. Sequence Similarity among Structural Repeats in the Piezo Family of Mechanosensitive Ion Channels. Microb Physiol 2023; 33:49-62. [PMID: 37321192 DOI: 10.1159/000531468] [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: 12/01/2022] [Accepted: 06/05/2023] [Indexed: 06/17/2023]
Abstract
Members of the Piezo family of mechanically activated cation channels are involved in multiple physiological processes in higher eukaryotes, including vascular development, cell differentiation, touch perception, hearing, and more, but they are also common in single-celled eukaryotic microorganisms. Mutations in these proteins in humans are associated with a variety of diseases, such as colorectal adenomatous polyposis, dehydrated hereditary stomatocytosis, and hereditary xerocytosis. Available 3D structures for Piezo proteins show nine regions of four transmembrane segments each that have the same fold. Despite the remarkable similarity among the nine characteristic structural repeats in the family, no significant sequence similarity among them has been reported. Using bioinformatics approaches and the Transporter Classification Database (TCDB) as reference, we reliably identified sequence similarity among repeats based on four lines of evidence: (1) hidden Markov model-profile similarities across repeats at the family level, (2) pairwise sequence similarities between different repeats across Piezo homologs, (3) Piezo-specific conserved sequence signatures that consistently identify the same regions across repeats, and (4) conserved residues that maintain the same orientation and location in 3D space.
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Affiliation(s)
- Kevin J Hendargo
- Department of Molecular Biology, School of Biological Sciences, University of California, San Diego, California, USA
| | - Ashay O Patel
- Department of Molecular Biology, School of Biological Sciences, University of California, San Diego, California, USA
| | - Onyeka S Chukwudozie
- Department of Molecular Biology, School of Biological Sciences, University of California, San Diego, California, USA
| | | | - J Andres Christen
- Departamento de Probabilidad y Estadística, Centro de Investigación en Matemáticas, CIMAT, Guanajuato, Mexico
| | - Arturo Medrano-Soto
- Department of Molecular Biology, School of Biological Sciences, University of California, San Diego, California, USA
| | - Milton H Saier
- Department of Molecular Biology, School of Biological Sciences, University of California, San Diego, California, USA
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24
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Lohia R, Allegrini B, Berry L, Guizouarn H, Cerdan R, Abkarian M, Douguet D, Honoré E, Wengelnik K. Pharmacological activation of PIEZO1 in human red blood cells prevents Plasmodium falciparum invasion. Cell Mol Life Sci 2023; 80:124. [PMID: 37071200 PMCID: PMC10113305 DOI: 10.1007/s00018-023-04773-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 03/30/2023] [Indexed: 04/19/2023]
Abstract
An inherited gain-of-function variant (E756del) in the mechanosensitive cationic channel PIEZO1 was shown to confer a significant protection against severe malaria. Here, we demonstrate in vitro that human red blood cell (RBC) infection by Plasmodium falciparum is prevented by the pharmacological activation of PIEZO1. Yoda1 causes an increase in intracellular calcium associated with rapid echinocytosis that inhibits RBC invasion, without affecting parasite intraerythrocytic growth, division or egress. Notably, Yoda1 treatment significantly decreases merozoite attachment and subsequent RBC deformation. Intracellular Na+/K+ imbalance is unrelated to the mechanism of protection, although delayed RBC dehydration observed in the standard parasite culture medium RPMI/albumax further enhances the resistance to malaria conferred by Yoda1. The chemically unrelated Jedi2 PIEZO1 activator similarly causes echinocytosis and RBC dehydration associated with resistance to malaria invasion. Spiky outward membrane projections are anticipated to reduce the effective surface area required for both merozoite attachment and internalization upon pharmacological activation of PIEZO1. Globally, our findings indicate that the loss of the typical biconcave discoid shape of RBCs, together with an altered optimal surface to volume ratio, induced by PIEZO1 pharmacological activation prevent efficient P. falciparum invasion.
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Affiliation(s)
- Rakhee Lohia
- LPHI, University of Montpellier, CNRS UMR5294, Montpellier, France
| | | | - Laurence Berry
- LPHI, University of Montpellier, CNRS UMR5294, Montpellier, France
| | | | - Rachel Cerdan
- LPHI, University of Montpellier, CNRS UMR5294, Montpellier, France
| | - Manouk Abkarian
- Centre de Biologie Structurale, CNRS UMR5048, INSERM U1054, University of Montpellier, Montpellier, France
| | - Dominique Douguet
- IPMC, University Côte d'Azur, CNRS, INSERM, UMR7275, Labex ICST, Valbonne, France
| | - Eric Honoré
- IPMC, University Côte d'Azur, CNRS, INSERM, UMR7275, Labex ICST, Valbonne, France.
| | - Kai Wengelnik
- LPHI, University of Montpellier, CNRS UMR5294, INSERM, Montpellier, France.
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25
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Nader E, Conran N, Leonardo FC, Hatem A, Boisson C, Carin R, Renoux C, Costa FF, Joly P, Brito PL, Esperti S, Bernard J, Gauthier A, Poutrel S, Bertrand Y, Garcia C, Saad STO, Egée S, Connes P. Piezo1 activation augments sickling propensity and the adhesive properties of sickle red blood cells in a calcium-dependent manner. Br J Haematol 2023. [PMID: 37011913 DOI: 10.1111/bjh.18799] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 03/07/2023] [Accepted: 03/28/2023] [Indexed: 04/05/2023]
Abstract
Haemoglobin S polymerization in the red blood cells (RBCs) of individuals with sickle cell anaemia (SCA) can cause RBC sickling and cellular alterations. Piezo1 is a mechanosensitive protein that modulates intracellular calcium (Ca2+ ) influx, and its activation has been associated with increased RBC surface membrane phosphatidylserine (PS) exposure. Hypothesizing that Piezo1 activation, and ensuing Gárdos channel activity, alter sickle RBC properties, RBCs from patients with SCA were incubated with the Piezo1 agonist, Yoda1 (0.1-10 μM). Oxygen-gradient ektacytometry and membrane potential measurement showed that Piezo1 activation significantly decreased sickle RBC deformability, augmented sickling propensity, and triggered pronounced membrane hyperpolarization, in association with Gárdos channel activation and Ca2+ influx. Yoda1 induced Ca2+ -dependent adhesion of sickle RBCs to laminin, in microfluidic assays, mediated by increased BCAM binding affinity. Furthermore, RBCs from SCA patients that were homo-/heterozygous for the rs59446030 gain-of-function Piezo1 variant demonstrated enhanced sickling under deoxygenation and increased PS exposure. Thus, Piezo1 stimulation decreases sickle RBC deformability, and increases the propensities of these cells to sickle upon deoxygenation and adhere to laminin. Results support a role of Piezo1 in some of the RBC properties that contribute to SCA vaso-occlusion, indicating that Piezo1 may represent a potential therapeutic target molecule for this disease.
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Affiliation(s)
- Elie Nader
- Laboratory LIBM EA7424, Vascular Biology and Red Blood Cell Team, University of Lyon, Lyon, France
| | - Nicola Conran
- Hematology and Transfusion Center, University of Campinas, Campinas, Brazil
| | - Flavia C Leonardo
- Hematology and Transfusion Center, University of Campinas, Campinas, Brazil
| | - Aline Hatem
- Sorbonne Université, CNRS, UMR 8227 LBI2M, Station Biologique de Roscoff SBR, Roscoff, France
| | - Camille Boisson
- Laboratory LIBM EA7424, Vascular Biology and Red Blood Cell Team, University of Lyon, Lyon, France
- Service de Biochimie et Biologie Moléculaire, Laboratoire de Biologie Médicale Multi-site, Hospices Civils de Lyon, Lyon, France
| | - Romain Carin
- Laboratory LIBM EA7424, Vascular Biology and Red Blood Cell Team, University of Lyon, Lyon, France
| | - Céline Renoux
- Laboratory LIBM EA7424, Vascular Biology and Red Blood Cell Team, University of Lyon, Lyon, France
- Service de Biochimie et Biologie Moléculaire, Laboratoire de Biologie Médicale Multi-site, Hospices Civils de Lyon, Lyon, France
| | - Fernando F Costa
- Hematology and Transfusion Center, University of Campinas, Campinas, Brazil
| | - Philippe Joly
- Laboratory LIBM EA7424, Vascular Biology and Red Blood Cell Team, University of Lyon, Lyon, France
- Service de Biochimie et Biologie Moléculaire, Laboratoire de Biologie Médicale Multi-site, Hospices Civils de Lyon, Lyon, France
| | - Pamela L Brito
- Hematology and Transfusion Center, University of Campinas, Campinas, Brazil
| | - Sofia Esperti
- Laboratory LIBM EA7424, Vascular Biology and Red Blood Cell Team, University of Lyon, Lyon, France
- Erytech Pharma, Lyon, France
| | - Joelle Bernard
- Service de Biochimie et Biologie Moléculaire, Laboratoire de Biologie Médicale Multi-site, Hospices Civils de Lyon, Lyon, France
| | - Alexandra Gauthier
- Laboratory LIBM EA7424, Vascular Biology and Red Blood Cell Team, University of Lyon, Lyon, France
- Institut d'Hématologique et d'Oncologique Pédiatrique, Hospices Civils de Lyon, Lyon, France
| | - Solene Poutrel
- Laboratory LIBM EA7424, Vascular Biology and Red Blood Cell Team, University of Lyon, Lyon, France
- Service de Médecine Interne, Hôpital Edouard Herriot, Hospices Civils de Lyon, Lyon, France
| | - Yves Bertrand
- Institut d'Hématologique et d'Oncologique Pédiatrique, Hospices Civils de Lyon, Lyon, France
| | - Caroline Garcia
- Service de Biochimie et Biologie Moléculaire, Laboratoire de Biologie Médicale Multi-site, Hospices Civils de Lyon, Lyon, France
| | - Sara T O Saad
- Hematology and Transfusion Center, University of Campinas, Campinas, Brazil
| | - Stéphane Egée
- Sorbonne Université, CNRS, UMR 8227 LBI2M, Station Biologique de Roscoff SBR, Roscoff, France
| | - Philippe Connes
- Laboratory LIBM EA7424, Vascular Biology and Red Blood Cell Team, University of Lyon, Lyon, France
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26
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Optical control of PIEZO1 channels. Nat Commun 2023; 14:1269. [PMID: 36882406 PMCID: PMC9992513 DOI: 10.1038/s41467-023-36931-0] [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: 06/27/2022] [Accepted: 02/24/2023] [Indexed: 03/09/2023] Open
Abstract
PIEZO proteins are unusually large, mechanically-activated trimeric ion channels. The central pore features structural similarities with the pore of other trimeric ion channels, including purinergic P2X receptors, for which optical control of channel gating has been previously achieved with photoswitchable azobenzenes. Extension of these chemical optogenetics methods to mechanically-activated ion channels would provide tools for specific manipulation of pore activity alternative to non-specific mechanical stimulations. Here we report a light-gated mouse PIEZO1 channel, in which an azobenzene-based photoswitch covalently tethered to an engineered cysteine, Y2464C, localized at the extracellular apex of the transmembrane helix 38, rapidly triggers channel gating upon 365-nm-light irradiation. We provide evidence that this light-gated channel recapitulates mechanically-activated PIEZO1 functional properties, and show that light-induced molecular motions are similar to those evoked mechanically. These results push the limits of azobenzene-based methods to unusually large ion channels and provide a simple stimulation means to specifically interrogate PIEZO1 function.
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27
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Bogusławska DM, Kraszewski S, Skulski M, Potoczek S, Kuliczkowski K, Sikorski AF. Novel Variant of the SLC4A1 Gene Associated with Hereditary Spherocytosis. Biomedicines 2023; 11:biomedicines11030784. [PMID: 36979763 PMCID: PMC10045460 DOI: 10.3390/biomedicines11030784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 02/24/2023] [Accepted: 03/02/2023] [Indexed: 03/08/2023] Open
Abstract
Hereditary spherocytosis (HS) refers to the group of the most frequently occurring non-immune hereditary hemolytic anemia in people of Caucasian central or northern European ancestry. HS is mainly associated with pathogenic variants of genes encoding defects in five membrane proteins, including anion exchanger 1 encoded by the SLC4A1 gene. In this study, in a family affected with HS, we identified a hitherto unreported AE1 defect, variant p.G720W. The result of it is most likely the HS phenotype. Molecular dynamics simulation study of the AE1 transmembrane domain may indicate reasonable changes in AE1 domain structure, i.e., significant displacement of the tryptophan residue towards the membrane surface connected with possible changes in AE1 function. The WES analysis verified by classical sequencing in conjunction with biochemical analysis and molecular simulation studies shed light on the molecular mechanism underlying this case of hereditary spherocytosis, for which the newly discovered AE1 variant p.G720W seems crucial.
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Affiliation(s)
- Dżamila M. Bogusławska
- Department of Biotechnology, Institute of Biological Sciences, University of Zielona Góra, Prof. Szafrana St. 1, 65-516 Zielona Góra, Poland
| | - Sebastian Kraszewski
- Department of Biomedical Engineering, Wroclaw University of Science and Technology, Plac Grunwaldzki 13 (D-1), 50-377 Wroclaw, Poland
| | - Michał Skulski
- Department of Cytobiochemistry, Faculty of Biotechnology, University of Wroclaw, F. Joliot-Curie 14a St., 50-383 Wroclaw, Poland
| | - Stanisław Potoczek
- Department and Clinic of Haematology, Blood Neoplasms and Bone Marrow Transplantation, Wroclaw Medical University, Wybrzeże L. Pasteura 4, 50-367 Wroclaw, Poland
| | - Kazimierz Kuliczkowski
- Silesian Park of Medical Technology Kardio-Med Silesia, ul. M. Curie-Skłodowskiej 10c, 41-800 Zabrze, Poland
| | - Aleksander F. Sikorski
- Research and Development Centre, Regional Specialist Hospital, Kamieńskiego 73a, 51-154 Wroclaw, Poland
- Correspondence: ; Tel.: +48-71-327-05-16; Fax: +48-71-375-62-08
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28
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Nakahara E, Yamamoto KS, Ogura H, Aoki T, Utsugisawa T, Azuma K, Akagawa H, Watanabe K, Muraoka M, Nakamura F, Kamei M, Tatebayashi K, Shinozuka J, Yamane T, Hibino M, Katsura Y, Nakano-Akamatsu S, Kadowaki N, Maru Y, Ito E, Ohga S, Yagasaki H, Morioka I, Yamamoto T, Kanno H. Variant spectrum of PIEZO1 and KCNN4 in Japanese patients with dehydrated hereditary stomatocytosis. Hum Genome Var 2023; 10:8. [PMID: 36864026 PMCID: PMC9981561 DOI: 10.1038/s41439-023-00235-y] [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: 09/12/2022] [Revised: 01/26/2023] [Accepted: 02/01/2023] [Indexed: 03/04/2023] Open
Abstract
Hereditary stomatocytosis (HSt) is a type of congenital hemolytic anemia caused by abnormally increased cation permeability of erythrocyte membranes. Dehydrated HSt (DHSt) is the most common subtype of HSt and is diagnosed based on clinical and laboratory findings related to erythrocytes. PIEZO1 and KCNN4 have been recognized as causative genes, and many related variants have been reported. We analyzed the genomic background of 23 patients from 20 Japanese families suspected of having DHSt using a target capture sequence and identified pathogenic/likely pathogenic variants of PIEZO1 or KCNN4 in 12 families.
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Affiliation(s)
- Erina Nakahara
- Department of Transfusion Medicine and Cell Processing, Tokyo Women's Medical University, Tokyo, Japan
- Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - Keiko Shimojima Yamamoto
- Department of Transfusion Medicine and Cell Processing, Tokyo Women's Medical University, Tokyo, Japan.
- Institute for Comprehensive Medical Sciences, Tokyo Women's Medical University, Tokyo, Japan.
- Institute of Medical Genetics, Tokyo Women's Medical University, Tokyo, Japan.
| | - Hiromi Ogura
- Department of Transfusion Medicine and Cell Processing, Tokyo Women's Medical University, Tokyo, Japan
| | - Takako Aoki
- Department of Transfusion Medicine and Cell Processing, Tokyo Women's Medical University, Tokyo, Japan
| | - Taiju Utsugisawa
- Department of Transfusion Medicine and Cell Processing, Tokyo Women's Medical University, Tokyo, Japan
| | - Kenko Azuma
- Institute for Comprehensive Medical Sciences, Tokyo Women's Medical University, Tokyo, Japan
| | - Hiroyuki Akagawa
- Institute for Comprehensive Medical Sciences, Tokyo Women's Medical University, Tokyo, Japan
| | - Kenichiro Watanabe
- Department of Hematology and Oncology, Shizuoka Children's Hospital, Shizuoka, Japan
| | - Michiko Muraoka
- Department of Pediatrics, Fukuyama Medical Center, Okayama, Japan
| | - Fumihiko Nakamura
- Department of Laboratory Medicine, Nara Prefecture General Medical Center, Nara, Japan
| | - Michi Kamei
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan
| | - Koji Tatebayashi
- Department of Neonatology, Gifu Prefectural General Medical Center, Gifu, Japan
| | - Jun Shinozuka
- Department of Pediatrics, Uji-Tokushukai Medical Center, Kyoto, Japan
| | - Takahisa Yamane
- Department of Hematology, Osaka City General Hospital, Osaka, Japan
| | - Makoto Hibino
- Department of Respiratory Medicine, Shonan Fujisawa Tokushukai Hospital, Fujisawa, Kanagawa, Japan
| | - Yoshiya Katsura
- Department of Metabolism and Endocrinology, Tokyo Medical University Ibaraki Medical Center, Ibaraki, Japan
| | | | - Norimitsu Kadowaki
- Department of Internal Medicine, Division of Hematology, Rheumatology and Respiratory Medicine, Faculty of Medicine, Kagawa University, Kagawa, Japan
| | - Yoshiro Maru
- Department of Pharmacology, Tokyo Women's Medical University, Tokyo, Japan
| | - Etsuro Ito
- Department of Pediatrics, Hirosaki University Graduate School of Medicine, Aomori, Japan
| | - Shouichi Ohga
- Department of Pediatrics, Kyushu University Graduate School of Medical Sciences, Fukuoka, Japan
| | - Hiroshi Yagasaki
- Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - Ichiro Morioka
- Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - Toshiyuki Yamamoto
- Institute for Comprehensive Medical Sciences, Tokyo Women's Medical University, Tokyo, Japan
- Institute of Medical Genetics, Tokyo Women's Medical University, Tokyo, Japan
| | - Hitoshi Kanno
- Department of Transfusion Medicine and Cell Processing, Tokyo Women's Medical University, Tokyo, Japan
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Juvenile Hemochromatosis With Non-transfused Hemolytic Anemia Caused by a De Novo PIEZO1 Gene Mutation. J Pediatr Hematol Oncol 2023; 45:e510-e513. [PMID: 36898020 DOI: 10.1097/mph.0000000000002639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 01/10/2023] [Indexed: 03/12/2023]
Abstract
Differential diagnosis of juvenile hemochromatosis along with hemolytic anemia is often difficult. We report a 23-year-old woman with macrocytic hemolytic anemia with iron overload. The patient showed high serum ferritin and transferrin saturation and low serum transferrin and ceruloplasmin. We also noticed stomatocytes in her blood smear, which was confirmed by scanning electron microscopy. Target gene sequencing identified a mutation in PIEZO1 (heterozygous c.6008C>A: p.A2003D). This mutation was reported previously in a family with dehydrated hereditary stomatocytosis (DHS1, [OMIM 194380]), but in the current case, it was identified to be a de novo mutation. We underscore DHS1 in the differential diagnosis of iron overload associated with non-transfused hemolytic anemia in children and young adults.
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30
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Lew VL. The circulatory dynamics of human red blood cell homeostasis: Oxy-deoxy and PIEZO1-triggered changes. Biophys J 2023; 122:484-495. [PMID: 36588342 PMCID: PMC9941722 DOI: 10.1016/j.bpj.2022.12.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 11/14/2022] [Accepted: 12/30/2022] [Indexed: 01/02/2023] Open
Abstract
The vital function of red blood cells (RBCs) is to mediate the transport of oxygen from lungs to tissues and of CO2 from tissues to lungs. The gas exchanges occur during capillary transits within fractions of a second. Each oxygenation-deoxygenation and deoxygenation-reoxygenation transition on hemoglobin triggers sharp changes in RBC pH, leading to downstream changes in ion fluxes, membrane potential, and cell volume. The dynamics of these changes during the variable periods between capillary transits in vivo remains a mystery inaccessible to study by current methodologies, a knowledge gap on a fundamental physiological process that is the focus of the present study. The use of a computational model of human RBC homeostasis of tested accreditation enabled a detailed investigation of the expected RBC changes during intercapillary transits, with results advancing novel insights and predictions. The predicted rates of relative RBC volume change on oxygenation-deoxygenation (oxy-deoxy) and deoxygenation-reoxygenation transitions were about 1.5%/min and -0.9%/min, respectively, far too slow to allow the cells to reach steady states in the intervals between capillary transits. The amplitude of the oxy-deoxy-reoxygenation volume fluctuations varied in proportion with the duration of the intercapillary transit intervals. Upon capillary entry, oxy-deoxy-induced changes occur concurrently with deformation-induced PIEZO1 channel activation, both processes affecting cell pH, membrane potential, and cell volume during intertransit periods. The model showed that the effects were strictly additive as expected from processes operating independently on the cell's homeostatic fabric. Analysis of the mechanisms behind these predictions revealed, for the first time, the complex interactions between oxy-deoxy and ion transport processes that ensure the long-term homeostatic stability of RBCs for optimal gas transport in physiological conditions and how these may become altered in diseased states. Possible designs of microfluidic devices to test the model predictions are discussed.
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Affiliation(s)
- Virgilio L Lew
- Physiological Laboratory, Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Site, Cambridge, United Kingdom.
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31
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Karamatic Crew V, Tilley LA, Satchwell TJ, AlSubhi SA, Jones B, Spring FA, Walser PJ, Martins Freire C, Murciano N, Rotordam MG, Woestmann SJ, Hamed M, Alradwan R, AlKhrousey M, Skidmore I, Lewis S, Hussain S, Jackson J, Latham T, Kilby MD, Lester W, Becker N, Rapedius M, Toye AM, Thornton NM. Missense mutations in PIEZO1, which encodes the Piezo1 mechanosensor protein, define Er red blood cell antigens. Blood 2023; 141:135-146. [PMID: 36122374 PMCID: PMC10644042 DOI: 10.1182/blood.2022016504] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 07/28/2022] [Accepted: 08/15/2022] [Indexed: 01/17/2023] Open
Abstract
Despite the identification of the high-incidence red cell antigen Era nearly 40 years ago, the molecular background of this antigen, together with the other 2 members of the Er blood group collection, has yet to be elucidated. Whole exome and Sanger sequencing of individuals with serologically defined Er alloantibodies identified several missense mutations within the PIEZO1 gene, encoding amino acid substitutions within the extracellular domain of the Piezo1 mechanosensor ion channel. Confirmation of Piezo1 as the carrier molecule for the Er blood group antigens was demonstrated using immunoprecipitation, CRISPR/Cas9-mediated gene knockout, and expression studies in an erythroblast cell line. We report the molecular bases of 5 Er blood group antigens: the recognized Era, Erb, and Er3 antigens and 2 novel high-incidence Er antigens, described here as Er4 and Er5, establishing a new blood group system. Anti-Er4 and anti-Er5 are implicated in severe hemolytic disease of the fetus and newborn. Demonstration of Piezo1, present at just a few hundred copies on the surface of the red blood cell, as the site of a new blood group system highlights the potential antigenicity of even low-abundance membrane proteins and contributes to our understanding of the in vivo characteristics of this important and widely studied protein in transfusion biology and beyond.
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Affiliation(s)
- Vanja Karamatic Crew
- International Blood Group Reference Laboratory, NHS Blood and Transplant, Bristol, United Kingdom
| | - Louise A. Tilley
- International Blood Group Reference Laboratory, NHS Blood and Transplant, Bristol, United Kingdom
| | - Timothy J. Satchwell
- School of Biochemistry, University of Bristol, Bristol, United Kingdom
- National Institute for Health Research Blood and Transplant Research Unit in Red Blood Cell Products, University of Bristol, Bristol, United Kingdom
- Bristol Institute of Transfusion Sciences, NHS Blood and Transplant, Bristol, United Kingdom
| | - Samah A. AlSubhi
- International Blood Group Reference Laboratory, NHS Blood and Transplant, Bristol, United Kingdom
- School of Biochemistry, University of Bristol, Bristol, United Kingdom
- Laboratory Medicine Department, Faculty of Applied Medical Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Benjamin Jones
- International Blood Group Reference Laboratory, NHS Blood and Transplant, Bristol, United Kingdom
| | - Frances A. Spring
- National Institute for Health Research Blood and Transplant Research Unit in Red Blood Cell Products, University of Bristol, Bristol, United Kingdom
- Bristol Institute of Transfusion Sciences, NHS Blood and Transplant, Bristol, United Kingdom
| | - Piers J. Walser
- Clinical Biotechnology Centre, NHS Blood and Transplant, Bristol, United Kingdom
| | | | - Nicoletta Murciano
- Theoretical Medicine and Biosciences, Saarland University, Homburg, Germany
- Research and Development, Nanion Technologies, Munich, Germany
| | | | | | | | | | | | - Ian Skidmore
- Red Cell Immunohaematology, NHS Blood and Transplant, Birmingham, United Kingdom
| | - Sarah Lewis
- Red Cell Immunohaematology, NHS Blood and Transplant, Birmingham, United Kingdom
| | - Shimon Hussain
- Red Cell Immunohaematology, NHS Blood and Transplant, Birmingham, United Kingdom
| | - Jane Jackson
- Haematology Department at Birmingham Women’s Hospital, Birmingham Women’s and Children’s NHS Foundation Trust, Birmingham, United Kingdom
| | - Tom Latham
- NHS Blood and Transplant, Bristol, United Kingdom
| | - Mark D. Kilby
- College of Medical & Dental Sciences, University of Birmingham, Birmingham, United Kingdom
- Fetal Medicine Centre, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, United Kingdom
| | - William Lester
- Haematology Department at Birmingham Women’s Hospital, Birmingham Women’s and Children’s NHS Foundation Trust, Birmingham, United Kingdom
| | - Nadine Becker
- Research and Development, Nanion Technologies, Munich, Germany
| | - Markus Rapedius
- Research and Development, Nanion Technologies, Munich, Germany
| | - Ashley M. Toye
- School of Biochemistry, University of Bristol, Bristol, United Kingdom
- National Institute for Health Research Blood and Transplant Research Unit in Red Blood Cell Products, University of Bristol, Bristol, United Kingdom
- Bristol Institute of Transfusion Sciences, NHS Blood and Transplant, Bristol, United Kingdom
| | - Nicole M. Thornton
- International Blood Group Reference Laboratory, NHS Blood and Transplant, Bristol, United Kingdom
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32
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Vaisey G, Banerjee P, North AJ, Haselwandter CA, MacKinnon R. Piezo1 as a force-through-membrane sensor in red blood cells. eLife 2022; 11:e82621. [PMID: 36515266 PMCID: PMC9750178 DOI: 10.7554/elife.82621] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 12/01/2022] [Indexed: 12/15/2022] Open
Abstract
Piezo1 is the stretch activated Ca2+ channel in red blood cells that mediates homeostatic volume control. Here, we study the organization of Piezo1 in red blood cells using a combination of super-resolution microscopy techniques and electron microscopy. Piezo1 adopts a non-uniform distribution on the red blood cell surface, with a bias toward the biconcave 'dimple'. Trajectories of diffusing Piezo1 molecules, which exhibit confined Brownian diffusion on short timescales and hopping on long timescales, also reflect a bias toward the dimple. This bias can be explained by 'curvature coupling' between the intrinsic curvature of the Piezo dome and the curvature of the red blood cell membrane. Piezo1 does not form clusters with itself, nor does it colocalize with F-actin, Spectrin, or the Gardos channel. Thus, Piezo1 exhibits the properties of a force-through-membrane sensor of curvature and lateral tension in the red blood cell.
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Affiliation(s)
- George Vaisey
- Laboratory of Molecular Neurobiology and Biophysics, Howard Hughes Medical Institute, The Rockefeller UniversityNew YorkUnited States
| | - Priyam Banerjee
- Bio-Imaging Resource Center, The Rockefeller UniversityNew YorkUnited States
| | - Alison J North
- Bio-Imaging Resource Center, The Rockefeller UniversityNew YorkUnited States
| | - Christoph A Haselwandter
- Department of Physics and Astronomy and Department of Quantitative and Computational Biology, University of Southern CaliforniaLos AngelesUnited States
| | - Roderick MacKinnon
- Laboratory of Molecular Neurobiology and Biophysics, Howard Hughes Medical Institute, The Rockefeller UniversityNew YorkUnited States
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33
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Caulier A, Jankovsky N, Gautier EF, El Nemer W, Guitton C, Ouled-Haddou H, Guillonneau F, Mayeux P, Salnot V, Bruce J, Picard V, Garçon L. Red blood cell proteomics reveal remnant protein biosynthesis and folding pathways in PIEZO1-related hereditary xerocytosis. Front Physiol 2022; 13:960291. [PMID: 36531183 PMCID: PMC9751340 DOI: 10.3389/fphys.2022.960291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 10/21/2022] [Indexed: 11/25/2023] Open
Abstract
Hereditary xerocytosis is a dominant red cell membrane disorder characterized by an increased leak of potassium from the inside to outside the red blood cell membrane, associated with loss of water leading to red cell dehydration and chronic hemolysis. 90% of cases are related to heterozygous gain of function mutations in PIEZO1, encoding a mechanotransductor that translates a mechanical stimulus into a biological signaling. Data are still required to understand better PIEZO1-HX pathophysiology. Recent studies identified proteomics as an accurate and high-input tool to study erythroid progenitors and circulating red cell physiology. Here, we isolated red blood cells from 5 controls and 5 HX patients carrying an identified and pathogenic PIEZO1 mutation and performed a comparative deep proteomic analysis. A total of 603 proteins were identified among which 56 were differentially expressed (40 over expressed and 16 under expressed) between controls and HX with a homogenous expression profile within each group. We observed relevant modifications in the protein expression profile related to PIEZO1 mutations, identifying two main "knots". The first contained both proteins of the chaperonin containing TCP1 complex involved in the assembly of unfolded proteins, and proteins involved in translation. The second contained proteins involved in ubiquitination. Deregulation of proteins involved in protein biosynthesis was also observed in in vitro-produced reticulocytes after Yoda1 exposure. Thus, our work identifies significant changes in the protein content of PIEZO1-HX erythrocytes, revealing a "PIEZO1 signature" and identifying potentially targetable pathways in this disease characterized by a heterogeneous clinical expression and contra-indication of splenectomy.
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Affiliation(s)
- Alexis Caulier
- HEMATIM, CURS, Amiens and Laboratoire d’Hématologie, CHU Amiens, UPJV, Amiens, France
| | - Nicolas Jankovsky
- HEMATIM, CURS, Amiens and Laboratoire d’Hématologie, CHU Amiens, UPJV, Amiens, France
| | - Emilie Fleur Gautier
- 3P5 Proteom’IC, Institut Cochin, INSERM, CNRS, Université Paris Cité, Paris, France
- Institut Imagine-INSERM U1163, Necker Hospital, University of Paris, Paris, France
- Laboratoire d’excellence GR-Ex, Paris, France
| | | | - Corinne Guitton
- Laboratoire d’Hématologie et Filière MCGRE, CHU Bicêtre, Le Kremlin-Bicêtre, France
| | - Hakim Ouled-Haddou
- HEMATIM, CURS, Amiens and Laboratoire d’Hématologie, CHU Amiens, UPJV, Amiens, France
| | - François Guillonneau
- 3P5 Proteom’IC, Institut Cochin, INSERM, CNRS, Université Paris Cité, Paris, France
| | - Patrick Mayeux
- 3P5 Proteom’IC, Institut Cochin, INSERM, CNRS, Université Paris Cité, Paris, France
| | - Virginie Salnot
- 3P5 Proteom’IC, Institut Cochin, INSERM, CNRS, Université Paris Cité, Paris, France
| | - Johanna Bruce
- 3P5 Proteom’IC, Institut Cochin, INSERM, CNRS, Université Paris Cité, Paris, France
| | - Véronique Picard
- Laboratoire d’Hématologie et Filière MCGRE, CHU Bicêtre, Le Kremlin-Bicêtre, France
- Laboratoire d’Hématologie, Faculté de Pharmacie, Université Paris Saclay, Amiens, France
| | - Loïc Garçon
- HEMATIM, CURS, Amiens and Laboratoire d’Hématologie, CHU Amiens, UPJV, Amiens, France
- INSERM U1134, INTS, Paris, France
- Laboratoire d’Hématologie et Filière MCGRE, CHU Bicêtre, Le Kremlin-Bicêtre, France
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34
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Identifying interpretable gene-biomarker associations with functionally informed kernel-based tests in 190,000 exomes. Nat Commun 2022; 13:5332. [PMID: 36088354 PMCID: PMC9464252 DOI: 10.1038/s41467-022-32864-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 08/22/2022] [Indexed: 12/05/2022] Open
Abstract
Here we present an exome-wide rare genetic variant association study for 30 blood biomarkers in 191,971 individuals in the UK Biobank. We compare gene-based association tests for separate functional variant categories to increase interpretability and identify 193 significant gene-biomarker associations. Genes associated with biomarkers were ~ 4.5-fold enriched for conferring Mendelian disorders. In addition to performing weighted gene-based variant collapsing tests, we design and apply variant-category-specific kernel-based tests that integrate quantitative functional variant effect predictions for missense variants, splicing and the binding of RNA-binding proteins. For these tests, we present a computationally efficient combination of the likelihood-ratio and score tests that found 36% more associations than the score test alone while also controlling the type-1 error. Kernel-based tests identified 13% more associations than their gene-based collapsing counterparts and had advantages in the presence of gain of function missense variants. We introduce local collapsing by amino acid position for missense variants and use it to interpret associations and identify potential novel gain of function variants in PIEZO1. Our results show the benefits of investigating different functional mechanisms when performing rare-variant association tests, and demonstrate pervasive rare-variant contribution to biomarker variability.
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35
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Allegrini B, Jedele S, David Nguyen L, Mignotet M, Rapetti-Mauss R, Etchebest C, Fenneteau O, Loubat A, Boutet A, Thomas C, Durin J, Petit A, Badens C, Garçon L, Da Costa L, Guizouarn H. New KCNN4 Variants Associated With Anemia: Stomatocytosis Without Erythrocyte Dehydration. Front Physiol 2022; 13:918620. [PMID: 36003639 PMCID: PMC9393219 DOI: 10.3389/fphys.2022.918620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 05/27/2022] [Indexed: 11/13/2022] Open
Abstract
The K+ channel activated by the Ca2+, KCNN4, has been shown to contribute to red blood cell dehydration in the rare hereditary hemolytic anemia, the dehydrated hereditary stomatocytosis. We report two de novo mutations on KCNN4, We reported two de novo mutations on KCNN4, V222L and H340N, characterized at the molecular, cellular and clinical levels. Whereas both mutations were shown to increase the calcium sensitivity of the K+ channel, leading to channel opening for lower calcium concentrations compared to WT KCNN4 channel, there was no obvious red blood cell dehydration in patients carrying one or the other mutation. The clinical phenotype was greatly different between carriers of the mutated gene ranging from severe anemia for one patient to a single episode of anemia for the other patient or no documented sign of anemia for the parents who also carried the mutation. These data compared to already published KCNN4 mutations question the role of KCNN4 gain-of-function mutations in hydration status and viability of red blood cells in bloodstream.
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Affiliation(s)
- B. Allegrini
- Université Côte d’Azur, CNRS, INSERM, iBV, Nice, France
| | - S. Jedele
- Université Paris Cité and Université des Antilles, Inserm, BIGR, Paris, France
| | - L. David Nguyen
- Université Paris Cité, Paris, France
- AP-HP, Service d’Hématologie Biologique, Hôpital R. Debré, Paris, France
| | - M. Mignotet
- Université Côte d’Azur, CNRS, INSERM, iBV, Nice, France
| | | | - C. Etchebest
- Université Paris Cité and Université des Antilles, Inserm, BIGR, Paris, France
| | - O. Fenneteau
- AP-HP, Service d’Hématologie Biologique, Hôpital R. Debré, Paris, France
| | - A. Loubat
- Université Côte d’Azur, CNRS, INSERM, iBV, Nice, France
| | - A. Boutet
- Hôpital Saint Nazaire, Saint-Nazaire, France
| | - C. Thomas
- CHU Nantes, Service Oncologie-hématologie et Immunologie Pédiatrique, Nantes, France
| | - J. Durin
- Sorbonne Université, AP-HP, Hôpital Armand Trousseau, Service d'Hématologie Oncologie Pédiatrique, Paris, France
| | - A. Petit
- Sorbonne Université, AP-HP, Hôpital Armand Trousseau, Service d'Hématologie Oncologie Pédiatrique, Paris, France
| | - C. Badens
- Aix Marseille Univ, INSERM, MMG, Marseille, France
- AP-HM, Department of Genetic, Marseille, France
| | - L. Garçon
- Université Picardie Jules Verne, Unité EA4666 Hematim, Amiens, France
- CHU Amiens, Service d'Hématologie Biologique, Amiens, France
| | - L. Da Costa
- Université Paris Cité, Paris, France
- AP-HP, Service d’Hématologie Biologique, Hôpital R. Debré, Paris, France
- Université Picardie Jules Verne, Unité EA4666 Hematim, Amiens, France
| | - H. Guizouarn
- Université Côte d’Azur, CNRS, INSERM, iBV, Nice, France
- *Correspondence: H. Guizouarn,
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36
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Song S, Zhang H, Wang X, Chen W, Cao W, Zhang Z, Shi C. The role of mechanosensitive Piezo1 channel in diseases. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2022; 172:39-49. [PMID: 35436566 DOI: 10.1016/j.pbiomolbio.2022.04.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 04/09/2022] [Accepted: 04/12/2022] [Indexed: 06/14/2023]
Abstract
Mechanotransduction is associated with organ development and homoeostasis. Piezo1 and Piezo2 are novel mechanosensitive ion channels (MSCs) in mammals. MSCs are membrane proteins that are critical for the mechanotransduction of living cells. Current studies have demonstrated that the Piezo protein family not only functions in volume regulation, cellular migration, proliferation, and apoptosis but is also important for human diseases of various systems. The complete loss of Piezo1 and Piezo2 function is fatal in the embryonic period. This review summarizes the role of Piezo1 in diseases of different systems and perspectives potential treatments related to Piezo1 for these diseases.
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Affiliation(s)
- Siqi Song
- Department of Human Anatomy, Histology and Embryology, School of Basic Medicine, Qingdao University, Qingdao, 266071, Shandong Province, China
| | - Hong Zhang
- Department of Cardiac Surgery, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, 266071, Shandong Province, China
| | - Xiaoya Wang
- Department of Human Anatomy, Histology and Embryology, School of Basic Medicine, Qingdao University, Qingdao, 266071, Shandong Province, China
| | - Wei Chen
- Department of Urology, The Affiliated Xinqiao Hospital, The Third Military Medical University, Chongqing, 400038, China
| | - Wenxuan Cao
- Department of Human Anatomy, Histology and Embryology, School of Basic Medicine, Qingdao University, Qingdao, 266071, Shandong Province, China
| | - Zhe Zhang
- School of Basic Medicine, College of Medicine, Qingdao University, Qingdao 266071, Shandong Province, China.
| | - Chunying Shi
- Department of Human Anatomy, Histology and Embryology, School of Basic Medicine, Qingdao University, Qingdao, 266071, Shandong Province, China.
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Jung R, Janardhan HP, Trivedi CM. Cation Channelopathies: Novel Insights into Generalized Lymphatic Dysplasia. Circ Res 2022; 131:130-132. [DOI: 10.1161/circresaha.122.321400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Roy Jung
- Division of Cardiovascular Medicine (R.J., H.P.J., C.M.T.), University of Massachusetts Medical School, Worcester, MA
- Department of Medicine (R.J., H.P.J., C.M.T.), University of Massachusetts Medical School, Worcester, MA
- Department of Molecular, Cell, and Cancer Biology (R.J., C.M.T.), University of Massachusetts Medical School, Worcester, MA
| | - Harish P. Janardhan
- Division of Cardiovascular Medicine (R.J., H.P.J., C.M.T.), University of Massachusetts Medical School, Worcester, MA
- Department of Medicine (R.J., H.P.J., C.M.T.), University of Massachusetts Medical School, Worcester, MA
| | - Chinmay M. Trivedi
- Division of Cardiovascular Medicine (R.J., H.P.J., C.M.T.), University of Massachusetts Medical School, Worcester, MA
- Department of Medicine (R.J., H.P.J., C.M.T.), University of Massachusetts Medical School, Worcester, MA
- Department of Molecular, Cell, and Cancer Biology (R.J., C.M.T.), University of Massachusetts Medical School, Worcester, MA
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38
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Chen Y, Su Y, Wang F. The Piezo1 ion channel in glaucoma: a new perspective on mechanical stress. Hum Cell 2022; 35:1307-1322. [PMID: 35767143 DOI: 10.1007/s13577-022-00738-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 06/13/2022] [Indexed: 11/26/2022]
Abstract
Glaucomatous optic nerve damage caused by pathological intraocular pressure elevation is irreversible, and its course is often difficult to control. This group of eye diseases is closely related to biomechanics, and the correlation between glaucoma pathogenesis and mechanical stimulation has been studied in recent decades. The nonselective cation channel Piezo1, the most important known mechanical stress sensor, is a transmembrane protein widely expressed in various cell types. Piezo1 has been detected throughout the eye, and the close relationship between Piezo1 and glaucoma is being confirmed. Pathological changes in glaucoma occur in both the anterior and posterior segments of the eye, and it is of great interest for researchers to determine whether Piezo1 plays a role in these changes and how it functions. The elucidation of the mechanisms of Piezo1 action in nonocular tissues and the reported roles of similar mechanically activated ion channels in glaucoma will provide an appropriate basis for further investigation. From a new perspective, this review provides a detailed description of the current progress in elucidating the role of Piezo1 in glaucoma, including relevant questions and assumptions, the remaining challenging research directions and mechanism-related therapeutic potential.
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Affiliation(s)
- Yidan Chen
- Department of Ophthalmology, Fourth Affiliated Hospital, Harbin Medical University, Yiyuan Road, Harbin, 150001, China
| | - Ying Su
- Eye Hospital, First Affiliated Hospital, Harbin Medical University, Yiman Road, Harbin, 150007, China.
| | - Feng Wang
- Department of Ophthalmology, Fourth Affiliated Hospital, Harbin Medical University, Yiyuan Road, Harbin, 150001, China.
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39
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Qin X, Ni Z, Jiang J, Liu X, Dong X, Li M, Miao K, Rao S, Zhang W, Cai K. High-throughput membrane-anchored proteome screening reveals PIEZO1 as a promising antibody-drug target for human esophageal squamous cell carcinoma. Cancer Med 2022; 11:3700-3713. [PMID: 35608274 PMCID: PMC9554447 DOI: 10.1002/cam4.4744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 03/28/2022] [Accepted: 03/30/2022] [Indexed: 12/24/2022] Open
Abstract
Background Esophageal carcinoma is one of the most fatal cancers worldwide. In China, over 90% of esophageal cancer patients are diagnosed with esophageal squamous cell carcinoma (ESCC). Currently, the survival and prognosis of ESCC patients are not satisfying because of insufficient early screening and lack of efficacious medication. Accumulating studies have suggested that antibody‐drug conjugates (ADC) represent a promising antitumor strategy. Method Here, we carried out a specific membrane proteome screening with ESCC patients' samples using a high‐throughput antibody microarray to uncover potential targets for ADC development. Candidates were validated with expression and cytotoxicity evaluation both in vitro and in vivo. Results Our data have shown that the Piezo‐Type Mechanosensitive Ion Channel Component 1 (PIEZO1) is particularly overexpressed in human ESCC tumors and can be efficiently internalized when bound with its monoclonal antibody. Furthermore, the PIEZO1 antibody combined with monomethyl auristatin E (MMAE) can specifically kill PIEZO1 high‐expressed ESCC tumor cells by inducing cell cycle arrest and apoptosis. More importantly, the Anti‐PIEZO1‐MMAE can significantly suppress tumor progression in ESCC xenograft tumor models without any obvious side effects. Conclusion Taken together, our work demonstrates that PIEZO1 is a promising target to develop ADCs for human ESCC treatment, providing a new strategy for ESCC patients' personalized therapy.
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Affiliation(s)
- Xun Qin
- Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Zhen Ni
- Department of Thoracic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Jianjun Jiang
- Department of Thoracic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Xiguang Liu
- Department of Thoracic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Xiaoying Dong
- Department of Thoracic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Mei Li
- Department of Thoracic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Kai Miao
- Cancer Center, Faculty of Health Science, University of Macau, Macau SAR, China
| | - Shuan Rao
- Department of Thoracic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Wenqing Zhang
- Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.,Division of Cell, Developmental and Integrative Biology, School of Medicine, South China University of Technology, Guangzhou, China
| | - Kaican Cai
- Department of Thoracic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
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40
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Han S, Guo X, Wang X, Lin H, Yu Y, Shu J, Dong M, Yang L. A Novel Homozygous Missense Mutation of PIEZO1 Leading to Lymphatic Malformation-6 Identified in a Family With Three Adverse Pregnancy Outcomes due to Nonimmune Fetal Hydrops. Front Genet 2022; 13:856046. [PMID: 35646098 PMCID: PMC9136293 DOI: 10.3389/fgene.2022.856046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 03/28/2022] [Indexed: 11/13/2022] Open
Abstract
Lymphatic malformation-6 (LMPHM6) is a rarer form of nonimmune hydrops that often manifests as widespread lymphedema involving all segments of the body, namely, subcutaneous edema, intestinal/pulmonary lymphangiectasia, chylothoraces, and pleural/pericardial effusions. Here, we detected one rare and previously unobserved homozygous missense variant in PIEZO1 (c.5162C>G, p.Ser1721Trp) as a novel genetic cause of autosomal recessive LMPHM6, in a family with three adverse pregnancy outcomes due to nonimmune fetal hydrops. Although, the loss-of-function mutations such as those usually including nonsense, frameshift, splice site, and also fewer missense variants in PIEZO1 have been proved to lead to LMPHM6, among these, the biallelic homozygous mutations resulting in the loss of function of PIEZO1 have not been reported before. Here, we first strongly implicated impaired PIEZO1 function–associated LMPHM6 with a homozygous missense mutation in PIEZO1.
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Affiliation(s)
- Shuai Han
- Center for Reproductive Medicine, Department of Obstetrics, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, China
| | - Xin Guo
- Center for Reproductive Medicine, Department of Obstetrics, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, China
| | - Xiaogang Wang
- Cancer Center, Department of Hematology, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, China
| | - Huijun Lin
- Center for Laboratory Medicine, Department of Clinical Laboratory, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, China
| | - Yiqi Yu
- Center for Reproductive Medicine, Department of Reproductive Endocrinology, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, China
| | - Jing Shu
- Center for Reproductive Medicine, Department of Reproductive Endocrinology, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, China
| | - Minyue Dong
- Department of Reproductive Genetics, Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Liwei Yang
- Center for Reproductive Medicine, Department of Obstetrics, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital, Hangzhou Medical College), Hangzhou, China
- *Correspondence: Liwei Yang,
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41
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Kim HS, Suh JS, Jang YK, Ahn SH, Choi GH, Yang JY, Lim GH, Jung Y, Jiang J, Sun J, Suk M, Wang Y, Kim TJ. Förster Resonance Energy Transfer-Based Single-Cell Imaging Reveals Piezo1-Induced Ca 2+ Flux Mediates Membrane Ruffling and Cell Survival. Front Cell Dev Biol 2022; 10:865056. [PMID: 35646889 PMCID: PMC9136143 DOI: 10.3389/fcell.2022.865056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 04/25/2022] [Indexed: 01/18/2023] Open
Abstract
A mechanosensitive ion channel, Piezo1 induces non-selective cation flux in response to various mechanical stresses. However, the biological interpretation and underlying mechanisms of cells resulting from Piezo1 activation remain elusive. This study elucidates Piezo1-mediated Ca2+ influx driven by channel activation and cellular behavior using novel Förster Resonance Energy Transfer (FRET)-based biosensors and single-cell imaging analysis. Results reveal that extracellular Ca2+ influx via Piezo1 requires intact caveolin, cholesterol, and cytoskeletal support. Increased cytoplasmic Ca2+ levels enhance PKA, ERK, Rac1, and ROCK activity, which have the potential to promote cancer cell survival and migration. Furthermore, we demonstrate that Piezo1-mediated Ca2+ influx upregulates membrane ruffling, a characteristic feature of cancer cell metastasis, using spatiotemporal image correlation spectroscopy. Thus, our findings provide new insights into the function of Piezo1, suggesting that Piezo1 plays a significant role in the behavior of cancer cells.
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Affiliation(s)
- Heon-Su Kim
- Department of Integrated Biological Science, Pusan National University, Pusan, South Korea,Institute of Systems Biology, Pusan National University, Pusan, South Korea
| | - Jung-Soo Suh
- Department of Integrated Biological Science, Pusan National University, Pusan, South Korea
| | - Yoon-Kwan Jang
- Department of Integrated Biological Science, Pusan National University, Pusan, South Korea
| | - Sang-Hyun Ahn
- Department of Integrated Biological Science, Pusan National University, Pusan, South Korea
| | - Gyu-Ho Choi
- Department of Integrated Biological Science, Pusan National University, Pusan, South Korea
| | - Jin-Young Yang
- Department of Integrated Biological Science, Pusan National University, Pusan, South Korea
| | - Gah-Hyun Lim
- Department of Integrated Biological Science, Pusan National University, Pusan, South Korea
| | - Youngmi Jung
- Department of Integrated Biological Science, Pusan National University, Pusan, South Korea
| | - Jie Jiang
- Department of Cell Biology, School of Medicine, Zhejiang University, Hangzhou, China
| | - Jie Sun
- Department of Cell Biology, School of Medicine, Zhejiang University, Hangzhou, China
| | - Myungeun Suk
- Department of Mechanical Engineering, Dong-Eui University, Pusan, South Korea
| | - Yingxiao Wang
- Department of Bioengineering, Institute of Engineering in Medicine, University of California, San Diego, La Jolla, CA, United States
| | - Tae-Jin Kim
- Department of Integrated Biological Science, Pusan National University, Pusan, South Korea,Institute of Systems Biology, Pusan National University, Pusan, South Korea,Department of Biological Sciences, Pusan National University, Pusan, South Korea,*Correspondence: Tae-Jin Kim,
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42
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Chuang YC, Chen CC. Force From Filaments: The Role of the Cytoskeleton and Extracellular Matrix in the Gating of Mechanosensitive Channels. Front Cell Dev Biol 2022; 10:886048. [PMID: 35586339 PMCID: PMC9108448 DOI: 10.3389/fcell.2022.886048] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 04/19/2022] [Indexed: 01/16/2023] Open
Abstract
The senses of proprioception, touch, hearing, and blood pressure on mechanosensitive ion channels that transduce mechanical stimuli with high sensitivity and speed. This conversion process is usually called mechanotransduction. From nematode MEC-4/10 to mammalian PIEZO1/2, mechanosensitive ion channels have evolved into several protein families that use variant gating models to convert different forms of mechanical force into electrical signals. In addition to the model of channel gating by stretching from lipid bilayers, another potent model is the opening of channels by force tethering: a membrane-bound channel is elastically tethered directly or indirectly between the cytoskeleton and the extracellular molecules, and the tethering molecules convey force to change the channel structure into an activation form. In general, the mechanical stimulation forces the extracellular structure to move relative to the cytoskeleton, deforming the most compliant component in the system that serves as a gating spring. Here we review recent studies focusing on the ion channel mechanically activated by a tethering force, the mechanotransduction-involved cytoskeletal protein, and the extracellular matrix. The mechanosensitive channel PIEZO2, DEG/ENaC family proteins such as acid-sensing ion channels, and transient receptor potential family members such as NompC are discussed. State-of-the-art techniques, such as polydimethylsiloxane indentation, the pillar array, and micropipette-guided ultrasound stimulation, which are beneficial tools for exploring the tether model, are also discussed.
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Affiliation(s)
- Yu-Chia Chuang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Chih-Cheng Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
- Neuroscience Program of Academia Sinica, Academia Sinica, Taipei, Taiwan
- Taiwan Mouse Clinic, BioTReC, Academia Sinica, Taipei, Taiwan
- *Correspondence: Chih-Cheng Chen,
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43
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Tang H, Zeng R, He E, Zhang I, Ding C, Zhang A. Piezo-Type Mechanosensitive Ion Channel Component 1 (Piezo1): A Promising Therapeutic Target and Its Modulators. J Med Chem 2022; 65:6441-6453. [DOI: 10.1021/acs.jmedchem.2c00085] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Hairong Tang
- Pharm-X Center, Laboratory of Medicinal Chemical Biology & Frontiers on Drug Discovery (RLMCBFDD), School of Pharmaceutical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Ruoqing Zeng
- Pharm-X Center, Laboratory of Medicinal Chemical Biology & Frontiers on Drug Discovery (RLMCBFDD), School of Pharmaceutical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Ende He
- Pharm-X Center, Laboratory of Medicinal Chemical Biology & Frontiers on Drug Discovery (RLMCBFDD), School of Pharmaceutical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | | | - Chunyong Ding
- Pharm-X Center, Laboratory of Medicinal Chemical Biology & Frontiers on Drug Discovery (RLMCBFDD), School of Pharmaceutical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Ao Zhang
- Pharm-X Center, Laboratory of Medicinal Chemical Biology & Frontiers on Drug Discovery (RLMCBFDD), School of Pharmaceutical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
- Shanghai Lingang National Laboratory, Shanghai 200210,China
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44
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Miles L, Powell J, Kozak C, Song Y. Mechanosensitive Ion Channels, Axonal Growth, and Regeneration. Neuroscientist 2022:10738584221088575. [PMID: 35414308 PMCID: PMC9556659 DOI: 10.1177/10738584221088575] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cells sense and respond to mechanical stimuli by converting those stimuli into biological signals, a process known as mechanotransduction. Mechanotransduction is essential in diverse cellular functions, including tissue development, touch sensitivity, pain, and neuronal pathfinding. In the search for key players of mechanotransduction, several families of ion channels were identified as being mechanosensitive and were demonstrated to be activated directly by mechanical forces in both the membrane bilayer and the cytoskeleton. More recently, Piezo ion channels were discovered as a bona fide mechanosensitive ion channel, and its characterization led to a cascade of research that revealed the diverse functions of Piezo proteins and, in particular, their involvement in neuronal repair.
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Affiliation(s)
- Leann Miles
- The Graduate Group in Biochemistry and Molecular Biophysics, University of Pennsylvania, Philadelphia, PA, USA
| | - Jackson Powell
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Casey Kozak
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Yuanquan Song
- The Graduate Group in Biochemistry and Molecular Biophysics, University of Pennsylvania, Philadelphia, PA, USA.,Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA.,Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, USA
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45
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Novel Insights and Future Perspective in Iron Metabolism and Anemia. Metabolites 2022; 12:metabo12020138. [PMID: 35208213 PMCID: PMC8879443 DOI: 10.3390/metabo12020138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 01/29/2022] [Indexed: 11/30/2022] Open
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46
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Andolfo I, Alper SL, Iolascon A. Nobel prize in physiology or medicine 2021, receptors for temperature and touch: Implications for hematology. Am J Hematol 2022; 97:168-170. [PMID: 34779027 PMCID: PMC9299453 DOI: 10.1002/ajh.26407] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 11/04/2021] [Accepted: 11/11/2021] [Indexed: 01/21/2023]
Affiliation(s)
- Immacolata Andolfo
- Department of Molecular Medicine and Medical Biotechnologies University Federico II of Naples Naples
- CEINGE, Biotecnologie Avanzate Naples
| | - Seth L. Alper
- Renal Division and Molecular and Vascular Medicine Division, Beth Israel Deaconess Medical Center and Department of Medicine Harvard Medical School Boston Massachusetts USA
| | - Achille Iolascon
- Department of Molecular Medicine and Medical Biotechnologies University Federico II of Naples Naples
- CEINGE, Biotecnologie Avanzate Naples
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47
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Zhu W, Guo S, Homilius M, Nsubuga C, Wright SH, Quan D, Kc A, Eddy SS, Victorio RA, Beerens M, Flaumenhaft R, Deo RC, MacRae CA. PIEZO1 mediates a mechanothrombotic pathway in diabetes. Sci Transl Med 2022; 14:eabk1707. [PMID: 34985971 DOI: 10.1126/scitranslmed.abk1707] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Wandi Zhu
- Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA.,Harvard Medical School, Boston, MA 02115, USA
| | - Shihui Guo
- Division of Hemostasis and Thrombosis, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA
| | - Max Homilius
- Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA.,Harvard Medical School, Boston, MA 02115, USA
| | - Cissy Nsubuga
- Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Shane H Wright
- Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA.,Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
| | - Dajun Quan
- Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Ashmita Kc
- Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Samuel S Eddy
- Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA
| | | | - Manu Beerens
- Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA.,Harvard Medical School, Boston, MA 02115, USA
| | - Robert Flaumenhaft
- Harvard Medical School, Boston, MA 02115, USA.,Division of Hemostasis and Thrombosis, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA
| | - Rahul C Deo
- Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA.,Harvard Medical School, Boston, MA 02115, USA
| | - Calum A MacRae
- Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA.,Harvard Medical School, Boston, MA 02115, USA
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48
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Kalfa TA. Diagnosis and clinical management of red cell membrane disorders. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2021; 2021:331-340. [PMID: 34889366 PMCID: PMC8791164 DOI: 10.1182/hematology.2021000265] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Heterogeneous red blood cell (RBC) membrane disorders and hydration defects often present with the common clinical findings of hemolytic anemia, but they may require substantially different management, based on their pathophysiology. An accurate and timely diagnosis is essential to avoid inappropriate interventions and prevent complications. Advances in genetic testing availability within the last decade, combined with extensive foundational knowledge on RBC membrane structure and function, now facilitate the correct diagnosis in patients with a variety of hereditary hemolytic anemias (HHAs). Studies in patient cohorts with well-defined genetic diagnoses have revealed complications such as iron overload in hereditary xerocytosis, which is amenable to monitoring, prevention, and treatment, and demonstrated that splenectomy is not always an effective or safe treatment for any patient with HHA. However, a multitude of variants of unknown clinical significance have been discovered by genetic evaluation, requiring interpretation by thorough phenotypic assessment in clinical and/or research laboratories. Here we discuss genotype-phenotype correlations and corresponding clinical management in patients with RBC membranopathies and propose an algorithm for the laboratory workup of patients presenting with symptoms and signs of hemolytic anemia, with a clinical case that exemplifies such a workup.
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MESH Headings
- Anemia, Hemolytic, Congenital/diagnosis
- Anemia, Hemolytic, Congenital/genetics
- Anemia, Hemolytic, Congenital/pathology
- Anemia, Hemolytic, Congenital/therapy
- Disease Management
- Elliptocytosis, Hereditary/diagnosis
- Elliptocytosis, Hereditary/genetics
- Elliptocytosis, Hereditary/pathology
- Elliptocytosis, Hereditary/therapy
- Erythrocyte Membrane/pathology
- Genetic Testing
- Humans
- Hydrops Fetalis/diagnosis
- Hydrops Fetalis/genetics
- Hydrops Fetalis/pathology
- Hydrops Fetalis/therapy
- Infant
- Male
- Mutation
- Spherocytosis, Hereditary/diagnosis
- Spherocytosis, Hereditary/genetics
- Spherocytosis, Hereditary/pathology
- Spherocytosis, Hereditary/therapy
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Affiliation(s)
- Theodosia A. Kalfa
- Correspondence Theodosia A. Kalfa, Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, MLC 7015, Cincinnati, OH 45229-3039; e-mail:
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49
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Vero Li J, D Cox C, Martinac B. The anchor domain is critical for Piezo1 channel mechanosensitivity. Channels (Austin) 2021; 15:438-446. [PMID: 33975519 PMCID: PMC8118467 DOI: 10.1080/19336950.2021.1923199] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 04/23/2021] [Accepted: 04/23/2021] [Indexed: 12/19/2022] Open
Abstract
The mechanosensitive channel Piezo1 is a crucial membrane mechanosensor ubiquitously expressed in mammalian cell types. Critical to its function in mechanosensory transduction is its ability to change conformation in response to applied mechanical force. Here, we interrogate the role of the anchor domain in the mechanically induced gating of human Piezo1 channels. Using the insertion of glycine residues at each corner of the triangular-shaped anchor domain to decouple this domain we provide evidence that the anchor is important in Piezo1 mechano-gating. Insertion of two extra glycine residues between the anchor and the outer helix of human Piezo1 causes abrogated inactivation and reduced mechanosensitivity. Whereas inserting two glycine residues at the apex of the anchor domain at the conserved amino acid P2113 causes the channel to be more sensitive to membrane forces. Correlation of stretch sensitivity with the volume of the neighboring amino acid, natively a phenylalanine (F2114), suggests this is caused by removal of steric hindrance on the inner pore-lining helix. Smaller volume amino acids at this residue increase sensitivity whereas larger volume reduces mechanosensitivity. The combined data show that the anchor domain is a critical region for Piezo1-mediated force transduction.
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Affiliation(s)
- Jinyuan Vero Li
- Molecular Cardiology and Biophysics Division, Victor Chang Cardiac Research Institute, Sydney, Australia
| | - Charles D Cox
- Molecular Cardiology and Biophysics Division, Victor Chang Cardiac Research Institute, Sydney, Australia
- St Vincent’s Clinical School, Faculty of Medicine, University of New South Wales, Sydney, Australia
| | - Boris Martinac
- Molecular Cardiology and Biophysics Division, Victor Chang Cardiac Research Institute, Sydney, Australia
- St Vincent’s Clinical School, Faculty of Medicine, University of New South Wales, Sydney, Australia
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50
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Yamaguchi Y, Allegrini B, Rapetti-Mauss R, Picard V, Garçon L, Kohl P, Soriani O, Peyronnet R, Guizouarn H. Hereditary Xerocytosis: Differential Behavior of PIEZO1 Mutations in the N-Terminal Extracellular Domain Between Red Blood Cells and HEK Cells. Front Physiol 2021; 12:736585. [PMID: 34737711 PMCID: PMC8562563 DOI: 10.3389/fphys.2021.736585] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 09/02/2021] [Indexed: 01/10/2023] Open
Abstract
Hereditary Xerocytosis, a rare hemolytic anemia, is due to gain of function mutations in PIEZO1, a non-selective cation channel activated by mechanical stress. How these PIEZO1 mutations impair channel function and alter red blood cell (RBC) physiology, is not completely understood. Here, we report the characterization of mutations in the N-terminal part of the protein (V598M, F681S and the double mutation G782S/R808Q), a part of the channel that was subject of many investigations to decipher its role in channel gating. Our data show that the electrophysiological features of these PIEZO1 mutants expressed in HEK293T cells are different from previously characterized PIEZO1 mutations that are located in the pore or at the C-terminal extracellular domain of the protein. Although RBC with PIEZO1 mutations showed a dehydrated phenotype, the activity of V598M, F681S or R808Q in response to stretch was not significantly different from the WT channels. In contrast, the G782S mutant showed larger currents compared to the WT PIEZO1. Interestingly, basal activity of all the mutated channels was not significantly altered at the opposite of what was expected according to the decreased water and cation contents of resting RBC. In addition, the features of mutant PIEZO1 expressed in HEK293 cells do not always correlate with the observation in RBC where PIEZO1 mutations induced a cation leak associated with an increased conductance. Our work emphasizes the role of the membrane environment in PIEZO1 activity and the need to characterize RBC permeability to assess pathogenicity to PIEZO1 mutants associated with erythrocyte diseases.
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Affiliation(s)
- Yohei Yamaguchi
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg, Bad Krozingen, Germany.,Medical Center and Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Benoit Allegrini
- Université Côte d'Azur, CNRS, INSERM, Institut de Biologie Valrose, Nice, France
| | | | - Véronique Picard
- Université Paris Sud-Paris Saclay, Faculté de Pharmacie, Service d'Hématologie Biologique, Hôpital Bicêtre, APHP, Le Kremlin-Bicêtre, France
| | - Loïc Garçon
- Université Picardie Jules Verne, EA 4666, Service d'Hématologie Biologique, CHU, Amiens, France
| | - Peter Kohl
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg, Bad Krozingen, Germany.,Medical Center and Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.,CIBSS - Centre for Integrative Biological Signalling Studies, University of Freiburg, Freiburg im Breisgau, Germany
| | - Olivier Soriani
- Université Côte d'Azur, CNRS, INSERM, Institut de Biologie Valrose, Nice, France
| | - Rémi Peyronnet
- Institute for Experimental Cardiovascular Medicine, University Heart Center Freiburg, Bad Krozingen, Germany.,Medical Center and Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany
| | - Hélène Guizouarn
- Université Côte d'Azur, CNRS, INSERM, Institut de Biologie Valrose, Nice, France
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