1
|
Díaz de Cerio M, Oliván S, Ochoa I, García-Sanmartín J, Martínez A. Cold-shock proteins accumulate in centrosomes and their expression and primary cilium morphology are regulated by hypothermia and shear stress. Histol Histopathol 2024; 39:447-462. [PMID: 37694837 DOI: 10.14670/hh-18-656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Primary cilia act as cellular sensors for multiple extracellular stimuli and regulate many intracellular signaling pathways in response. Here we investigate whether the cold-shock proteins (CSPs), CIRP and RBM3, are present in the primary cilia and the physiological consequences of such a relationship. R28, an immortalized retinal precursor cell line, was stained with antibodies against CIRP, RBM3, and ciliary markers. Both CSPs were found in intimate contact with the basal body of the cilium during all stages of the cell cycle, including migrating with the centrosome during mitosis. In addition, the morphological and physiological manifestations of exposing the cells to hypothermia and shear stress were investigated. Exposure to moderately cold (32°C) temperatures, the hypothermia mimetic small molecule zr17-2, or to shear stress resulted in a significant reduction in the number and length of primary cilia. In addition, shear stress induced expression of CIRP and RBM3 in a complex pattern depending on the specific protein, flow intensity, and type of flow (laminar versus oscillatory). Flow-mediated CSP overexpression was detected by qRT-PCR and confirmed by Western blot, at least for CIRP. Furthermore, analysis of public RNA Seq databases on flow experiments confirmed an increase of CIRP and RBM3 expression following exposure to shear stress in renal cell lines. In conclusion, we found that CSPs are integral components of the centrosome and that they participate in cold and shear stress sensing.
Collapse
Affiliation(s)
- María Díaz de Cerio
- Angiogenesis Unit, Oncology Area, Center for Biomedical Research of La Rioja (CIBIR), Logroño, Spain
| | - Sara Oliván
- Tissue Microenvironment Lab (TMELab), University of Zaragoza, Aragón Institute of Engineering Research (I3A), Institute for Health Research Aragon (IIS Aragón), Zaragoza, Spain
| | - Ignacio Ochoa
- Tissue Microenvironment Lab (TMELab), University of Zaragoza, Aragón Institute of Engineering Research (I3A), Institute for Health Research Aragon (IIS Aragón), Zaragoza, Spain
- Centro de Investigación Biomédica en Red. Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Institute for Health Research Aragon (IIS Aragón), Zaragoza, Spain
| | - Josune García-Sanmartín
- Angiogenesis Unit, Oncology Area, Center for Biomedical Research of La Rioja (CIBIR), Logroño, Spain
| | - Alfredo Martínez
- Angiogenesis Unit, Oncology Area, Center for Biomedical Research of La Rioja (CIBIR), Logroño, Spain.
| |
Collapse
|
2
|
Seo S, Sonn SK, Kweon HY, Jin J, Kume T, Ko JY, Park JH, Oh GT. Primary Cilium in Neural Crest Cells Crucial for Anterior Segment Development and Corneal Avascularity. Invest Ophthalmol Vis Sci 2024; 65:30. [PMID: 38517430 PMCID: PMC10981158 DOI: 10.1167/iovs.65.3.30] [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: 12/15/2023] [Accepted: 02/26/2024] [Indexed: 03/23/2024] Open
Abstract
Purpose Intraflagellar transport 46 (IFT46) is an integral subunit of the IFT-B complex, playing a key role in the assembly and maintenance of primary cilia responsible for transducing signaling pathways. Despite its predominant expression in the basal body of cilia, the precise role of Ift46 in ocular development remains undetermined. This study aimed to elucidate the impact of neural crest (NC)-specific deletion of Ift46 on ocular development. Methods NC-specific conditional knockout mice for Ift46 (NC-Ift46F/F) were generated by crossing Ift46F mice with Wnt1-Cre2 mice, enabling the specific deletion of Ift46 in NC-derived cells (NCCs). Sonic Hedgehog (Shh) and Notch signaling activities in NC-Ift46F/F mice were evaluated using Gli1lacZ and CBF:H2B-Venus reporter mice, respectively. Cell fate mapping was conducted using ROSAmTmG reporter mice. Results The deletion of Ift46 in NCCs resulted in a spectrum of ocular abnormalities, including thickened corneal stroma, hypoplasia of the anterior chamber, irregular iris morphology, and corneal neovascularization. Notably, this deletion led to reduced Shh signal activity in the periocular mesenchyme, sustained expression of key transcription factors Foxc1, Foxc2 and Pitx2, along with persistent cell proliferation. Additionally, it induced increased Notch signaling activity and the development of ectopic neovascularization within the corneal stroma. Conclusions The absence of primary cilia due to Ift46 deficiency in NCCs is associated with anterior segment dysgenesis (ASD) and corneal neovascularization, suggesting a potential link to Axenfeld-Rieger syndrome, a disorder characterized by ASD. This underscores the pivotal role of primary cilia in ensuring proper anterior segment development and maintaining an avascular cornea.
Collapse
Affiliation(s)
- Seungwoon Seo
- Heart-Immune-Brain Network Research Center, Department of Life Science, Ewha Womans University, Seoul, Republic of Korea
- Imvastech Inc., Seoul, Republic of Korea
| | - Seong Keun Sonn
- Heart-Immune-Brain Network Research Center, Department of Life Science, Ewha Womans University, Seoul, Republic of Korea
| | - Hyae Yon Kweon
- Heart-Immune-Brain Network Research Center, Department of Life Science, Ewha Womans University, Seoul, Republic of Korea
| | - Jing Jin
- Heart-Immune-Brain Network Research Center, Department of Life Science, Ewha Womans University, Seoul, Republic of Korea
| | - Tsutomu Kume
- Feinberg Cardiovascular and Renal Research Institute, Northwestern University School of Medicine, Chicago, Illinois, United States
| | - Je Yeong Ko
- Department of Biological Science, Sookmyung Women's University, Seoul, Republic of Korea
| | - Jong Hoon Park
- Department of Biological Science, Sookmyung Women's University, Seoul, Republic of Korea
| | - Goo Taeg Oh
- Heart-Immune-Brain Network Research Center, Department of Life Science, Ewha Womans University, Seoul, Republic of Korea
- Imvastech Inc., Seoul, Republic of Korea
| |
Collapse
|
3
|
Xu J, Wu X, Zhu H, Zhu Y, Du K, Deng X, Wang C. CRP inhibits the osteoblastic differentiation of OPCs via the up-regulation of primary cilia and repression of the Hedgehog signaling pathway. Med Oncol 2024; 41:72. [PMID: 38345752 DOI: 10.1007/s12032-024-02301-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 01/05/2024] [Indexed: 02/15/2024]
Abstract
Inflammation disrupts bone metabolism and leads to bone damage. C-reactive protein (CRP) is a typical inflammation marker. Although CRP measurement has been conducted for many decades, how osteoblastic differentiation influences molecular mechanisms remains largely unknown. The present study attempted to investigate the effects of CRP on primary cultured osteoblast precursor cells (OPCs) while elucidating the underlying molecular mechanisms. OPCs were isolated from suckling Sprague-Dawleyrats. Fewer OPCs were observed after recombinant C-reactive protein treatment. In a series of experiments, CRP inhibited OPC proliferation, osteoblastic differentiation, and the OPC gene expression of the hedgehog (Hh) signaling pathway. The inhibitory effect of CRP on OPC proliferation occurred via blockade of the G1-S transition of the cell cycle. In addition, the regulation effect of proto cilium on osteoblastic differentiation was analyzed using the bioinformatics p. This revealed the primary cilia activation of recombinant CRP effect on OPCs through in vitro experiments. A specific Sonic Hedgehog signaling agonist (SAG) rescued osteoblastic differentiation inhibited by recombinant CRP. Moreover, chloral hydrate, which removes primary cilia, inhibited the Suppressor of Fused (SUFU) formation and blocked Gli2 degradation. This counteracted osteogenesis inhibition caused by CRP. Therefore, these data depict that CRP can inhibit the proliferation and osteoblastic differentiation of OPCs. The underlying mechanism could be associated with primary cilia activation and Hh pathway repression.
Collapse
Affiliation(s)
- Jie Xu
- Department of Biochemistry and Molecular Biology, Molecular Medicine and Cancer Research Center, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Xiangmei Wu
- Department of Physiology, Molecular Medicine and Cancer Research Center, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Huifang Zhu
- Department of Biochemistry and Molecular Biology, Molecular Medicine and Cancer Research Center, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Yinghua Zhu
- Department of Pre-Hospital Emergency, Chongqing Emergency Medical Center, Central Hospital of Chongqing University, Chongqing, 400014, China
| | - Kailong Du
- Department of Biochemistry and Molecular Biology, Molecular Medicine and Cancer Research Center, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Xiaoyan Deng
- Department of Biochemistry and Molecular Biology, Molecular Medicine and Cancer Research Center, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Changdong Wang
- Department of Biochemistry and Molecular Biology, Molecular Medicine and Cancer Research Center, College of Basic Medicine, Chongqing Medical University, Chongqing, 400016, China.
| |
Collapse
|
4
|
Kalot R, Sentell Z, Kitzler TM, Torban E. Primary cilia and actin regulatory pathways in renal ciliopathies. FRONTIERS IN NEPHROLOGY 2024; 3:1331847. [PMID: 38292052 PMCID: PMC10824913 DOI: 10.3389/fneph.2023.1331847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 12/20/2023] [Indexed: 02/01/2024]
Abstract
Ciliopathies are a group of rare genetic disorders caused by defects to the structure or function of the primary cilium. They often affect multiple organs, leading to brain malformations, congenital heart defects, and anomalies of the retina or skeletal system. Kidney abnormalities are among the most frequent ciliopathic phenotypes manifesting as smaller, dysplastic, and cystic kidneys that are often accompanied by renal fibrosis. Many renal ciliopathies cause chronic kidney disease and often progress to end-stage renal disease, necessitating replacing therapies. There are more than 35 known ciliopathies; each is a rare hereditary condition, yet collectively they account for a significant proportion of chronic kidney disease worldwide. The primary cilium is a tiny microtubule-based organelle at the apex of almost all vertebrate cells. It serves as a "cellular antenna" surveying environment outside the cell and transducing this information inside the cell to trigger multiple signaling responses crucial for tissue morphogenesis and homeostasis. Hundreds of proteins and unique cellular mechanisms are involved in cilia formation. Recent evidence suggests that actin remodeling and regulation at the base of the primary cilium strongly impacts ciliogenesis. In this review, we provide an overview of the structure and function of the primary cilium, focusing on the role of actin cytoskeleton and its regulators in ciliogenesis. We then describe the key clinical, genetic, and molecular aspects of renal ciliopathies. We highlight what is known about actin regulation in the pathogenesis of these diseases with the aim to consider these recent molecular findings as potential therapeutic targets for renal ciliopathies.
Collapse
Affiliation(s)
- Rita Kalot
- Department of Medicine and Department of Physiology, McGill University, Montreal, QC, Canada
- The Research Institute of the McGill University Health Center, Montreal, QC, Canada
| | - Zachary Sentell
- Department of Human Genetics, McGill University, Montreal, QC, Canada
| | - Thomas M. Kitzler
- Department of Human Genetics, McGill University, Montreal, QC, Canada
- McGill University Health Center, Montreal, QC, Canada
| | - Elena Torban
- Department of Medicine and Department of Physiology, McGill University, Montreal, QC, Canada
- The Research Institute of the McGill University Health Center, Montreal, QC, Canada
| |
Collapse
|
5
|
Lee EY, Hughes JW. Rediscovering Primary Cilia in Pancreatic Islets. Diabetes Metab J 2023; 47:454-469. [PMID: 37105527 PMCID: PMC10404530 DOI: 10.4093/dmj.2022.0442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 03/15/2023] [Indexed: 04/29/2023] Open
Abstract
Primary cilia are microtubule-based sensory and signaling organelles on the surfaces of most eukaryotic cells. Despite their early description by microscopy studies, islet cilia had not been examined in the functional context until recent decades. In pancreatic islets as in other tissues, primary cilia facilitate crucial developmental and signaling pathways in response to extracellular stimuli. Many human developmental and genetic disorders are associated with ciliary dysfunction, some manifesting as obesity and diabetes. Understanding the basis for metabolic diseases in human ciliopathies has been aided by close examination of cilia action in pancreatic islets at cellular and molecular levels. In this article, we review the evidence for ciliary expression on islet cells, known roles of cilia in pancreas development and islet hormone secretion, and summarize metabolic manifestations of human ciliopathy syndromes. We discuss emerging data on primary cilia regulation of islet cell signaling and the structural basis of cilia-mediated cell crosstalk, and offer our interpretation on the role of cilia in glucose homeostasis and human diseases.
Collapse
Affiliation(s)
- Eun Young Lee
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jing W. Hughes
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| |
Collapse
|
6
|
Structure of the N-terminal coiled-coil domains of the ciliary protein Rpgrip1l. iScience 2023; 26:106249. [PMID: 36915689 PMCID: PMC10006689 DOI: 10.1016/j.isci.2023.106249] [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: 07/27/2022] [Revised: 12/30/2022] [Accepted: 02/16/2023] [Indexed: 02/25/2023] Open
Abstract
Rpgrip1l is one of the key ciliary proteins located at the transition zone of the primary cilium, an important organelle for cells to sense the outer environment. Mutations in the RPGRIP1L gene are associated with various ciliopathies. Here, we focused on the N-terminal coiled-coil of Rpgrip1l. By comprehensive biochemical and structural characterizations, we demonstrated that the two predicted coiled-coil regions (CC12) located at Rpgrip1l N-terminus each can form a stable parallel dimer. We further showed that overexpression of Rpgrip1l CC12 in NIH/3T3 cells significantly shortened the length of primary cilia, and this effect depended on the dimer formation. In addition, we found that CC12 of the homolog protein Rpgrip1 in mouse and human were significantly different from Rpgrip1l. Finally, we confirmed that some disease-related mutations can alter the dimeric states of CC12 of Rpgrip1l or Rpgrip1, which might explain the pathogenic mechanisms.
Collapse
|
7
|
Pablos M, Casanueva-Álvarez E, González-Casimiro CM, Merino B, Perdomo G, Cózar-Castellano I. Primary Cilia in Pancreatic β- and α-Cells: Time to Revisit the Role of Insulin-Degrading Enzyme. Front Endocrinol (Lausanne) 2022; 13:922825. [PMID: 35832432 PMCID: PMC9271624 DOI: 10.3389/fendo.2022.922825] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 05/24/2022] [Indexed: 12/25/2022] Open
Abstract
The primary cilium is a narrow organelle located at the surface of the cell in contact with the extracellular environment. Once underappreciated, now is thought to efficiently sense external environmental cues and mediate cell-to-cell communication, because many receptors, ion channels, and signaling molecules are highly or differentially expressed in primary cilium. Rare genetic disorders that affect cilia integrity and function, such as Bardet-Biedl syndrome and Alström syndrome, have awoken interest in studying the biology of cilium. In this review, we discuss recent evidence suggesting emerging roles of primary cilium and cilia-mediated signaling pathways in the regulation of pancreatic β- and α-cell functions, and its implications in regulating glucose homeostasis.
Collapse
Affiliation(s)
- Marta Pablos
- Department of Biochemistry, Molecular Biology and Physiology, School of Medicine, University of Valladolid, Valladolid, Spain
- *Correspondence: Marta Pablos,
| | - Elena Casanueva-Álvarez
- Unidad de Excelencia Instituto de Biología y Genética Molecular, University of Valladolid Consejo Superior de Investigaciones Científicas (CSIC), Valladolid, Spain
| | - Carlos M. González-Casimiro
- Unidad de Excelencia Instituto de Biología y Genética Molecular, University of Valladolid Consejo Superior de Investigaciones Científicas (CSIC), Valladolid, Spain
| | - Beatriz Merino
- Unidad de Excelencia Instituto de Biología y Genética Molecular, University of Valladolid Consejo Superior de Investigaciones Científicas (CSIC), Valladolid, Spain
| | - Germán Perdomo
- Unidad de Excelencia Instituto de Biología y Genética Molecular, University of Valladolid Consejo Superior de Investigaciones Científicas (CSIC), Valladolid, Spain
| | - Irene Cózar-Castellano
- Department of Biochemistry, Molecular Biology and Physiology, School of Medicine, University of Valladolid, Valladolid, Spain
- Unidad de Excelencia Instituto de Biología y Genética Molecular, University of Valladolid Consejo Superior de Investigaciones Científicas (CSIC), Valladolid, Spain
- Instituto de Salud Carlos III, Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain
| |
Collapse
|
8
|
Harel T, Griffin JN, Arbogast T, Monroe TO, Palombo F, Martinelli M, Seri M, Pippucci T, Elpeleg O, Katsanis N. Loss of function mutations in CCDC32 cause a congenital syndrome characterized by craniofacial, cardiac and neurodevelopmental anomalies. Hum Mol Genet 2021; 29:1489-1497. [PMID: 32307552 DOI: 10.1093/hmg/ddaa073] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/22/2020] [Accepted: 04/09/2020] [Indexed: 02/07/2023] Open
Abstract
Despite the wide use of genomics to investigate the molecular basis of rare congenital malformations, a significant fraction of patients remains bereft of diagnosis. As part of our continuous effort to recruit and perform genomic and functional studies on such cohorts, we investigated the genetic and mechanistic cause of disease in two independent consanguineous families affected by overlapping craniofacial, cardiac, laterality and neurodevelopmental anomalies. Using whole exome sequencing, we identified homozygous frameshift CCDC32 variants in three affected individuals. Functional analysis in a zebrafish model revealed that ccdc32 depletion recapitulates the human phenotypes. Because some of the patient phenotypes overlap defects common to ciliopathies, we asked if loss of CCDC32 might contribute to the dysfunction of this organelle. Consistent with this hypothesis, we show that ccdc32 is required for normal cilia formation in zebrafish embryos and mammalian cell culture, arguing that ciliary defects are at least partially involved in the pathomechanism of this disorder.
Collapse
Affiliation(s)
- Tamar Harel
- Department of Genetic and Metabolic Diseases, Hadassah-Hebrew University Medical Center, Jerusalem 91120, Israel
| | - John N Griffin
- Center for Human Disease Modeling, Duke University, Durham, NC 27701, USA.,School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
| | - Thomas Arbogast
- Center for Human Disease Modeling, Duke University, Durham, NC 27701, USA
| | - Tanner O Monroe
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.,Advanced Center for Translational and Genetic Medicine (ACT-GeM), Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL 60611, USA
| | - Flavia Palombo
- IRCCS Istituto delle Scienze Neurologiche di Bologna, UOC Clinica Neurologica, Bologna, Italy
| | - Marcella Martinelli
- Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale, Alma Mater Studiorum - Università di Bologna, Bologna 40138, Italy
| | - Marco Seri
- Dipartimento di Scienze Mediche e Chirurgiche, Alma Mater Studiorum - Università di Bologna, Bologna 40138, Italy.,U.O. Genetica Medica, Policlinico S. Orsola-Malpighi, Azienda Ospedaliero-Universitaria di Bologna, Bologna 40138, Italy
| | - Tommaso Pippucci
- U.O. Genetica Medica, Policlinico S. Orsola-Malpighi, Azienda Ospedaliero-Universitaria di Bologna, Bologna 40138, Italy
| | - Orly Elpeleg
- Monique and Jacques Roboh Department of Genetic Research, Hadassah-Hebrew University Medical Center, Jerusalem 91120, Israel
| | - Nicholas Katsanis
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.,Advanced Center for Translational and Genetic Medicine (ACT-GeM), Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL 60611, USA
| |
Collapse
|
9
|
Gurkaslar HK, Culfa E, Arslanhan MD, Lince-Faria M, Firat-Karalar EN. CCDC57 Cooperates with Microtubules and Microcephaly Protein CEP63 and Regulates Centriole Duplication and Mitotic Progression. Cell Rep 2021; 31:107630. [PMID: 32402286 DOI: 10.1016/j.celrep.2020.107630] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 03/08/2020] [Accepted: 04/20/2020] [Indexed: 12/21/2022] Open
Abstract
Centrosomes function in key cellular processes ranging from cell division to cellular signaling. Their dysfunction is linked to cancer and developmental disorders. Here, we identify CCDC57 as a pleiotropic regulator of centriole duplication, mitosis, and ciliogenesis. Combining proximity mapping with superresolution imaging, we show that CCDC57 localizes to the proximal end of centrioles and interacts with the microcephaly protein CEP63, centriolar satellite proteins, and microtubules. Loss of CCDC57 causes defects in centriole duplication and results in a failure to localize CEP63 and CEP152 to the centrosome. Additionally, CCDC57 depletion perturbs mitotic progression both in wild-type and centriole-less cells. Importantly, its centrosome-targeting region is required for its interaction with CEP63 and functions during centriole duplication and cilium assembly, whereas the microtubule-targeting region is required for its mitotic functions. Together, our results identify CCDC57 as a critical interface between centrosome and microtubule-mediated cellular processes that are deregulated in microcephaly.
Collapse
Affiliation(s)
- H Kubra Gurkaslar
- Department of Molecular Biology and Genetics, Koç University, Sarıyer, İstanbul 34450, Turkey
| | - Efraim Culfa
- Department of Molecular Biology and Genetics, Koç University, Sarıyer, İstanbul 34450, Turkey
| | - Melis D Arslanhan
- Department of Molecular Biology and Genetics, Koç University, Sarıyer, İstanbul 34450, Turkey
| | - Mariana Lince-Faria
- Instituto Gulbenkian de Ciência, Rua da Quinta Grande 6, Oeiras 2780-156, Portugal
| | - Elif Nur Firat-Karalar
- Department of Molecular Biology and Genetics, Koç University, Sarıyer, İstanbul 34450, Turkey.
| |
Collapse
|
10
|
Heme-binding protein CYB5D1 is a radial spoke component required for coordinated ciliary beating. Proc Natl Acad Sci U S A 2021; 118:2015689118. [PMID: 33875586 DOI: 10.1073/pnas.2015689118] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Coordinated beating is crucial for the function of multiple cilia. However, the molecular mechanism is poorly understood. Here, we characterize a conserved ciliary protein CYB5D1 with a heme-binding domain and a cordon-bleu ubiquitin-like domain. Mutation or knockdown of Cyb5d1 in zebrafish impaired coordinated ciliary beating in the otic vesicle and olfactory epithelium. Similarly, the two flagella of an insertional mutant of the CYB5D1 ortholog in Chlamydomonas (Crcyb5d1) showed an uncoordinated pattern due to a defect in the cis-flagellum. Biochemical analyses revealed that CrCYB5D1 is a radial spoke stalk protein that binds heme only under oxidizing conditions. Lack of CrCYB5D1 resulted in a reductive shift in flagellar redox state and slowing down of the phototactic response. Treatment of Crcyb5d1 with oxidants restored coordinated flagellar beating. Taken together, these data suggest that CrCYB5D1 may integrate environmental and intraciliary signals and regulate the redox state of cilia, which is crucial for the coordinated beating of multiple cilia.
Collapse
|
11
|
Tian JL, Gomeshtapeh FI. Potential Roles of O-GlcNAcylation in Primary Cilia- Mediated Energy Metabolism. Biomolecules 2020; 10:biom10111504. [PMID: 33139642 PMCID: PMC7693894 DOI: 10.3390/biom10111504] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 10/30/2020] [Accepted: 10/30/2020] [Indexed: 12/26/2022] Open
Abstract
The primary cilium, an antenna-like structure on most eukaryotic cells, functions in transducing extracellular signals into intracellular responses via the receptors and ion channels distributed along it membrane. Dysfunction of this organelle causes an array of human diseases, known as ciliopathies, that often feature obesity and diabetes; this indicates the primary cilia's active role in energy metabolism, which it controls mainly through hypothalamic neurons, preadipocytes, and pancreatic β-cells. The nutrient sensor, O-GlcNAc, is widely involved in the regulation of energy homeostasis. Not only does O-GlcNAc regulate ciliary length, but it also modifies many components of cilia-mediated metabolic signaling pathways. Therefore, it is likely that O-GlcNAcylation (OGN) plays an important role in regulating energy homeostasis in primary cilia. Abnormal OGN, as seen in cases of obesity and diabetes, may play an important role in primary cilia dysfunction mediated by these pathologies.
Collapse
Affiliation(s)
- Jie L. Tian
- Complex Carbohydrate Research Center, Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA 30602, USA
- Correspondence: ; Tel.: +1-706-583-5551
| | | |
Collapse
|
12
|
Patir A, Fraser AM, Barnett MW, McTeir L, Rainger J, Davey MG, Freeman TC. The transcriptional signature associated with human motile cilia. Sci Rep 2020; 10:10814. [PMID: 32616903 PMCID: PMC7331728 DOI: 10.1038/s41598-020-66453-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 04/15/2020] [Indexed: 02/06/2023] Open
Abstract
Cilia are complex microtubule-based organelles essential to a range of processes associated with embryogenesis and tissue homeostasis. Mutations in components of these organelles or those involved in their assembly may result in a diverse set of diseases collectively known as ciliopathies. Accordingly, many cilia-associated proteins have been described, while those distinguishing cilia subtypes are poorly defined. Here we set out to define genes associated with motile cilia in humans based on their transcriptional signature. To define the signature, we performed network deconvolution of transcriptomics data derived from tissues possessing motile ciliated cell populations. For each tissue, genes coexpressed with the motile cilia-associated transcriptional factor, FOXJ1, were identified. The consensus across tissues provided a transcriptional signature of 248 genes. To validate these, we examined the literature, databases (CilDB, CentrosomeDB, CiliaCarta and SysCilia), single cell RNA-Seq data, and the localisation of mRNA and proteins in motile ciliated cells. In the case of six poorly characterised signature genes, we performed new localisation experiments on ARMC3, EFCAB6, FAM183A, MYCBPAP, RIBC2 and VWA3A. In summary, we report a set of motile cilia-associated genes that helps shape our understanding of these complex cellular organelles.
Collapse
Affiliation(s)
- Anirudh Patir
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, Scotland, EH25 9RG, UK
| | - Amy M Fraser
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, Scotland, EH25 9RG, UK
| | - Mark W Barnett
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, Scotland, EH25 9RG, UK
| | - Lynn McTeir
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, Scotland, EH25 9RG, UK
| | - Joe Rainger
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, Scotland, EH25 9RG, UK
| | - Megan G Davey
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, Scotland, EH25 9RG, UK
| | - Tom C Freeman
- The Roslin Institute, University of Edinburgh, Easter Bush, Midlothian, Scotland, EH25 9RG, UK.
| |
Collapse
|
13
|
Soares H, Sunter JD, Wloga D, Joachimiak E, Miceli C. Trypanosoma, Paramecium and Tetrahymena: From genomics to flagellar and ciliary structures and cytoskeleton dynamics. Eur J Protistol 2020; 76:125722. [PMID: 32679518 DOI: 10.1016/j.ejop.2020.125722] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 05/06/2020] [Accepted: 05/11/2020] [Indexed: 02/06/2023]
Abstract
Cilia and flagella play an important role in motility, sensory perception, and the life cycles of eukaryotes, from protists to humans. However, much critical information concerning cilia structure and function remains elusive. The vast majority of ciliary and flagellar proteins analyzed so far are evolutionarily conserved and play a similar role in protozoa and vertebrates. This makes protozoa attractive biological models for studying cilia biology. Research conducted on ciliated or flagellated protists may improve our general understanding of cilia protein composition, of cilia beating, and can shed light on the molecular basis of the human disorders caused by motile cilia dysfunction. The Symposium "From genomics to flagellar and ciliary structures and cytoskeleton dynamics" at ECOP2019 in Rome presented the latest discoveries about cilia biogenesis and the molecular mechanisms of ciliary and flagellum motility based on studies in Paramecium, Tetrahymena, and Trypanosoma. Here, we review the most relevant aspects presented and discussed during the symposium and add our perspectives for future research.
Collapse
Affiliation(s)
- Helena Soares
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal; Escola Superior de Tecnologia da Saúde de Lisboa, Instituto Politécnico de Lisboa, Lisboa, Portugal
| | - Jack D Sunter
- Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, UK
| | - Dorota Wloga
- Laboratory of Cytoskeleton and Cilia Biology, Nencki Institute, Polish Academy of Sciences, 3 Pasteur Street, 02-093 Warsaw, Poland
| | - Ewa Joachimiak
- Laboratory of Cytoskeleton and Cilia Biology, Nencki Institute, Polish Academy of Sciences, 3 Pasteur Street, 02-093 Warsaw, Poland
| | - Cristina Miceli
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy.
| |
Collapse
|
14
|
Qu W, Yuan S, Quan C, Huang Q, Zhou Q, Yap Y, Shi L, Zhang D, Guest T, Li W, Yee SP, Zhang L, Cazin C, Hess RA, Ray PF, Kherraf ZE, Zhang Z. The essential role of intraflagellar transport protein IFT81 in male mice spermiogenesis and fertility. Am J Physiol Cell Physiol 2020; 318:C1092-C1106. [PMID: 32233951 DOI: 10.1152/ajpcell.00450.2019] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Intraflagellar transport (IFT) is an evolutionarily conserved mechanism that is indispensable for the formation and maintenance of cilia and flagella; however, the implications and functions of IFT81 remain unknown. In this study, we disrupted IFT81 expression in male germ cells starting from the spermatocyte stage. As a result, homozygous mutant males were completely infertile and displayed abnormal sperm parameters. In addition to oligozoospermia, spermatozoa presented dysmorphic and nonfunctional flagella. Histological examination of testes from homozygous mutant mice revealed abnormal spermiogenesis associated with sloughing of germ cells and the presence of numerous multinucleated giant germ cells (symblasts) in the lumen of seminiferous tubules and epididymis. Moreover, only few elongated spermatids and spermatozoa were seen in analyzed cross sections. Transmission electron microscopy showed a complete disorganization of the axoneme and para-axonemal structures such as the mitochondrial sheath, fibrous sheath, and outer dense fibers. In addition, numerous vesicles that contain unassembled microtubules were observed within developing spermatids. Acrosome structure analysis showed normal appearance, thus excluding a crucial role of IFT81 in acrosome biogenesis. These observations showed that IFT81 is an important member of the IFT process during spermatogenesis and that its absence is associated with abnormal flagellum formation leading to male infertility. The expression levels of several IFT components in testes, including IFT20, IFT25, IFT27, IFT57, IFT74, and IFT88, but not IFT140, were significantly reduced in homozygous mutant mice. Overall, our study demonstrates that IFT81 plays an essential role during spermatogenesis by modulating the assembly and elongation of the sperm flagella.
Collapse
Affiliation(s)
- Wei Qu
- School of Public Health, Wuhan University of Science and Technology, Wuhan, Hubei, China.,Department of Physiology, Wayne State University, Detroit, Michigan
| | - Shuo Yuan
- School of Public Health, Wuhan University of Science and Technology, Wuhan, Hubei, China.,Department of Physiology, Wayne State University, Detroit, Michigan
| | - Chao Quan
- School of Public Health, Wuhan University of Science and Technology, Wuhan, Hubei, China
| | - Qian Huang
- School of Public Health, Wuhan University of Science and Technology, Wuhan, Hubei, China.,Department of Physiology, Wayne State University, Detroit, Michigan
| | - Qi Zhou
- School of Public Health, Wuhan University of Science and Technology, Wuhan, Hubei, China.,Department of Physiology, Wayne State University, Detroit, Michigan
| | - Yitian Yap
- Department of Physiology, Wayne State University, Detroit, Michigan
| | - Lin Shi
- School of Public Health, Wuhan University of Science and Technology, Wuhan, Hubei, China.,Department of Physiology, Wayne State University, Detroit, Michigan
| | - David Zhang
- College of William & Mary, Williamsburg, Virginia
| | - Tamia Guest
- Department of Physiology, Wayne State University, Detroit, Michigan
| | - Wei Li
- Department of Physiology, Wayne State University, Detroit, Michigan
| | - Siu-Pok Yee
- Department of Cell Biology, University of Connecticut Health Center, Farmington, Connecticut
| | - Ling Zhang
- School of Public Health, Wuhan University of Science and Technology, Wuhan, Hubei, China
| | - Caroline Cazin
- Team Genetic, Epigenetic and Therapies of Infertility, Institute for Advanced Biosciences, Université Grenoble Alpes, Institut National de la Santé et de la Recherche Médicale U1209, Centre National de la Recherche Scientifique Unité Mixte de Recherche 5309, Grenoble, France.,Centre Hospitalier Universitaire de Grenoble Alpes, Grenoble, France
| | - Rex A Hess
- Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois, Urbana, Illinois
| | - Pierre F Ray
- Team Genetic, Epigenetic and Therapies of Infertility, Institute for Advanced Biosciences, Université Grenoble Alpes, Institut National de la Santé et de la Recherche Médicale U1209, Centre National de la Recherche Scientifique Unité Mixte de Recherche 5309, Grenoble, France.,Centre Hospitalier Universitaire de Grenoble Alpes, Grenoble, France
| | - Zine-Eddine Kherraf
- Team Genetic, Epigenetic and Therapies of Infertility, Institute for Advanced Biosciences, Université Grenoble Alpes, Institut National de la Santé et de la Recherche Médicale U1209, Centre National de la Recherche Scientifique Unité Mixte de Recherche 5309, Grenoble, France.,Centre Hospitalier Universitaire de Grenoble Alpes, Grenoble, France
| | - Zhibing Zhang
- Department of Physiology, Wayne State University, Detroit, Michigan.,Department of Obstetrics & Gynecology, Wayne State University, Detroit, Michigan
| |
Collapse
|
15
|
Wang Y, Tu C, Nie H, Meng L, Li D, Wang W, Zhang H, Lu G, Lin G, Tan YQ, Du J. Novel DNAAF6 variants identified by whole-exome sequencing cause male infertility and primary ciliary dyskinesia. J Assist Reprod Genet 2020; 37:811-820. [PMID: 32170493 DOI: 10.1007/s10815-020-01735-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 03/02/2020] [Indexed: 02/06/2023] Open
Abstract
PURPOSE To identify the genetic cause of patients with primary ciliary dyskinesia (PCD) and male infertility from two unrelated Han Chinese families. METHODS We conducted whole-exome sequencing of three individuals with PCD and male infertility from two unrelated Chinese families, and performed a targeted look-up for DNAAF6 variants in our previously reported cohort of 442 individuals (219 with isolated oligoasthenospermia and 223 fertile controls). Ultrastructural and immunostaining analyses of patients' spermatozoa were performed. The pathogenicity of the variants was validated using patient's spermatozoa and HEK293T cells. Intracytoplasmic sperm injection (ICSI) treatment was conducted in two patients. RESULTS We identified one novel hemizygous frameshift variant (NM_173494, c.319_329del: p.R107fs) of DNAAF6 gene (previously named PIH1D3) in family 1 and one novel hemizygous missense variant (c.290G>T: p.G97V) in family 2. No hemizygous deleterious variants in DNAAF6 were detected in the control cohort of 442 individuals. Ultrastructural and immunostaining analyses of patients' spermatozoa showed the absence of outer and inner dynein arms in sperm flagella. Both variants were proven to lead to DNAAF6 protein degradation in HEK293T cells. Both patients carrying DNAAF6 variants underwent one ICSI cycle and delivered one healthy child each. CONCLUSION We identified novel DNAAF6 variants causing male infertility and PCD in Han Chinese patients. This finding extended the spectrum of variants in DNAAF6 and revealed new light on the impact of DNAAF6 variants in sperm flagella.
Collapse
Affiliation(s)
- Ying Wang
- Institute of Reproductive and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, 410078, Hunan, China
| | - Chaofeng Tu
- Institute of Reproductive and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, 410078, Hunan, China
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China
| | - Hongchuan Nie
- Institute of Reproductive and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, 410078, Hunan, China
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China
| | - Lanlan Meng
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China
| | - Dongyan Li
- Institute of Reproductive and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, 410078, Hunan, China
| | - Weili Wang
- Institute of Reproductive and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, 410078, Hunan, China
| | - Huan Zhang
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China
| | - Guangxiu Lu
- Institute of Reproductive and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, 410078, Hunan, China
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China
- National Engineering and Research Center of Human Stem Cell, Changsha, China
| | - Ge Lin
- Institute of Reproductive and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, 410078, Hunan, China
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China
- National Engineering and Research Center of Human Stem Cell, Changsha, China
| | - Yue-Qiu Tan
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China.
- Institute of Reproduction and Stem Cell Engineering, Central South University, Changsha, 410078, Hunan, China.
| | - Juan Du
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China.
- Institute of Reproduction and Stem Cell Engineering, Central South University, Changsha, 410078, Hunan, China.
| |
Collapse
|
16
|
Abstract
Primary cilia project in a single copy from the surface of most vertebrate cell types; they detect and transmit extracellular cues to regulate diverse cellular processes during development and to maintain tissue homeostasis. The sensory capacity of primary cilia relies on the coordinated trafficking and temporal localization of specific receptors and associated signal transduction modules in the cilium. The canonical Hedgehog (HH) pathway, for example, is a bona fide ciliary signalling system that regulates cell fate and self-renewal in development and tissue homeostasis. Specific receptors and associated signal transduction proteins can also localize to primary cilia in a cell type-dependent manner; available evidence suggests that the ciliary constellation of these proteins can temporally change to allow the cell to adapt to specific developmental and homeostatic cues. Consistent with important roles for primary cilia in signalling, mutations that lead to their dysfunction underlie a pleiotropic group of diseases and syndromic disorders termed ciliopathies, which affect many different tissues and organs of the body. In this Review, we highlight central mechanisms by which primary cilia coordinate HH, G protein-coupled receptor, WNT, receptor tyrosine kinase and transforming growth factor-β (TGFβ)/bone morphogenetic protein (BMP) signalling and illustrate how defects in the balanced output of ciliary signalling events are coupled to developmental disorders and disease progression.
Collapse
|
17
|
Centrosomal and ciliary targeting of CCDC66 requires cooperative action of centriolar satellites, microtubules and molecular motors. Sci Rep 2019; 9:14250. [PMID: 31582766 PMCID: PMC6776500 DOI: 10.1038/s41598-019-50530-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 09/11/2019] [Indexed: 02/06/2023] Open
Abstract
Mammalian centrosomes and cilia play key roles in many cellular processes and their deregulation is linked to cancer and ciliopathies. Spatiotemporal regulation of their biogenesis and function in response to physiological stimuli requires timely protein targeting. This can occur by different pathways, including microtubule-dependent active transport and via centriolar satellites, which are key regulators of cilia assembly and signaling. How satellites mediate their functions and their relationship with other targeting pathways is currently unclear. To address this, we studied retinal degeneration gene product CCDC66, which localizes to centrosomes, cilia, satellites and microtubules and functions in ciliogenesis. FRAP experiments showed that its centrosomal pool was dynamic and the ciliary pool associated with the ciliary axoneme and was stable. Centrosomal CCDC66 abundance and dynamics required microtubule-dependent active transport and tethering, and was inhibited by sequestration at satellites. Systematic quantitation of satellite dynamics identified only a small fraction to display microtubule-based bimodal motility, consistent with trafficking function. Majority displayed diffusive motility with unimodal persistence, supporting sequestration function. Together, our findings reveal new mechanisms of communication between membrane-less compartments.
Collapse
|
18
|
Binding properties of the quaternary assembly protein SPAG1. Biochem J 2019; 476:1679-1694. [PMID: 31118266 DOI: 10.1042/bcj20190198] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/09/2019] [Accepted: 05/22/2019] [Indexed: 12/12/2022]
Abstract
In cells, many constituents are able to assemble resulting in large macromolecular machineries possessing very specific biological and physiological functions, e.g. ribosome, spliceosome and proteasome. Assembly of such entities is commonly mediated by transient protein factors. SPAG1 is a multidomain protein, known to participate in the assembly of both the inner and outer dynein arms. These arms are required for the function of sensitive and motile cells. Together with RUVBL1, RUVBL2 and PIH1D2, SPAG1 is a key element of R2SP, a protein complex assisting the quaternary assembly of specific protein clients in a tissue-specific manner and associating with heat shock proteins (HSPs) and regulators. In this study, we have investigated the role of TPR domains of SPAG1 in the recruitment of HSP chaperones by combining biochemical assays, ITC, NMR spectroscopy and molecular dynamics (MD) simulations. First, we propose that only two, out of the three TPR domains, are able to recruit the protein chaperones HSP70 and HSP90. We then focused on one of these TPR domains and elucidated its 3D structure using NMR spectroscopy. Relying on an NMR-driven docking approach and MD simulations, we deciphered its binding interface with the C-terminal tails of both HSP70 and HSP90. Finally, we addressed the biological function of SPAG1 and specifically demonstrated that a SPAG1 sub-fragment, containing a putative P-loop motif, cannot efficiently bind and hydrolyze GTP in vitro Our data challenge the interpretation of SPAG1 possessing GTPase activity. We propose instead that SPAG1 regulates nucleotide hydrolysis activity of the HSP and RUVBL1/2 partners.
Collapse
|