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Buglak DB, Holmes KHM, Galletta BJ, Rusan NM. The Proximal Centriole-Like Structure Anchors the Centriole to the Sperm Nucleus. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.15.589606. [PMID: 38712096 PMCID: PMC11071290 DOI: 10.1101/2024.04.15.589606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Proper connection between the sperm head and tail is critical for sperm motility and fertilization. The link between the head and tail is mediated by the Head-Tail Coupling Apparatus (HTCA), which secures the axoneme (tail) to the nucleus (head). However, the molecular architecture of the HTCA is not well understood. Here, we use Drosophila to create a high-resolution map of proteins and structures at the HTCA throughout spermiogenesis. Using structured illumination microscopy, we demonstrate that key HTCA proteins Spag4 and Yuri form a 'Centriole Cap' that surrounds the centriole (or Basal Body) as it is inserted, or embedded into the surface of the nucleus. As development progresses, the centriole is laterally displaces to the side of the nucleus, during which time the HTCA expands under the nucleus, forming what we term the 'Nuclear Shelf.' We next show that the proximal centriole-like (PCL) structure is positioned under the Nuclear Shelf and functions as a critical stabilizer of the centriole-nuclear attachment. Together, our data indicate that the HTCA is complex, multi-point attachment site that simultaneously engages the PCL, the centriole, and the nucleus to ensure proper head-tail connection during late-stage spermiogenesis.
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2
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Kalbfuss N, Gönczy P. Towards understanding centriole elimination. Open Biol 2023; 13:230222. [PMID: 37963546 PMCID: PMC10645514 DOI: 10.1098/rsob.230222] [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: 07/11/2023] [Accepted: 09/14/2023] [Indexed: 11/16/2023] Open
Abstract
Centrioles are microtubule-based structures crucial for forming flagella, cilia and centrosomes. Through these roles, centrioles are critical notably for proper cell motility, signalling and division. Recent years have advanced significantly our understanding of the mechanisms governing centriole assembly and architecture. Although centrioles are typically very stable organelles, persisting over many cell cycles, they can also be eliminated in some cases. Here, we review instances of centriole elimination in a range of species and cell types. Moreover, we discuss potential mechanisms that enable the switch from a stable organelle to a vanishing one. Further work is expected to provide novel insights into centriole elimination mechanisms in health and disease, thereby also enabling scientists to readily manipulate organelle fate.
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Affiliation(s)
- Nils Kalbfuss
- Swiss Institute for Experimental Cancer Research (ISREC), School of Life Sciences, Swiss Federal Institute of Technology Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Pierre Gönczy
- Swiss Institute for Experimental Cancer Research (ISREC), School of Life Sciences, Swiss Federal Institute of Technology Lausanne (EPFL), 1015 Lausanne, Switzerland
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3
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Turner KA, Achinger L, Kong D, Kluczynski DF, Fishman EL, Phillips A, Saltzman B, Loncarek J, Harstine BR, Avidor-Reiss T. Abnormal centriolar biomarker ratios correlate with unexplained bull artificial insemination subfertility: a pilot study. Sci Rep 2023; 13:18338. [PMID: 37884598 PMCID: PMC10603076 DOI: 10.1038/s41598-023-45162-8] [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: 07/25/2023] [Accepted: 10/17/2023] [Indexed: 10/28/2023] Open
Abstract
The mechanisms underlying male infertility are poorly understood. Most mammalian spermatozoa have two centrioles: the typical barrel-shaped proximal centriole (PC) and the atypical fan-like distal centriole (DC) connected to the axoneme (Ax). These structures are essential for fertility. However, the relationship between centriole quality and subfertility (reduced fertility) is not well established. Here, we tested the hypothesis that assessing sperm centriole quality can identify cattle subfertility. By comparing sperm from 25 fertile and 6 subfertile bulls, all with normal semen analyses, we found that unexplained subfertility and lower sire conception rates (pregnancy rate from artificial insemination in cattle) correlate with abnormal centriolar biomarker distribution. Fluorescence-based Ratiometric Analysis of Sperm Centrioles (FRAC) found only four fertile bulls (4/25, 16%) had positive FRAC tests (having one or more mean FRAC ratios outside of the distribution range in a group's high-quality sperm population), whereas all of the subfertile bulls (6/6, 100%) had positive FRAC tests (P = 0.00008). The most sensitive biomarker was acetylated tubulin, which had a novel labeling pattern between the DC and Ax. These data suggest that FRAC and acetylated tubulin labeling can identify bull subfertility that remains undetected by current methods and may provide insight into a novel mechanism of subfertility.
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Affiliation(s)
- Katerina A Turner
- Department of Biological Sciences, College of Natural Sciences and Mathematics, University of Toledo, 3050 W. Towerview Blvd, Toledo, OH, 43606, USA
| | - Luke Achinger
- Department of Biological Sciences, College of Natural Sciences and Mathematics, University of Toledo, 3050 W. Towerview Blvd, Toledo, OH, 43606, USA
| | - Dong Kong
- Laboratory of Protein Dynamics and Signaling, Center for Cancer Research, National Institutes of Health, National Cancer Institute, Frederick, MD, USA
| | - Derek F Kluczynski
- Department of Biological Sciences, College of Natural Sciences and Mathematics, University of Toledo, 3050 W. Towerview Blvd, Toledo, OH, 43606, USA
| | - Emily Lillian Fishman
- Department of Biological Sciences, College of Natural Sciences and Mathematics, University of Toledo, 3050 W. Towerview Blvd, Toledo, OH, 43606, USA
| | - Audrey Phillips
- Department of Biological Sciences, College of Natural Sciences and Mathematics, University of Toledo, 3050 W. Towerview Blvd, Toledo, OH, 43606, USA
| | - Barbara Saltzman
- Department of Population Health, College of Health and Human Services, University of Toledo, Toledo, OH, USA
| | - Jadranka Loncarek
- Laboratory of Protein Dynamics and Signaling, Center for Cancer Research, National Institutes of Health, National Cancer Institute, Frederick, MD, USA
| | | | - Tomer Avidor-Reiss
- Department of Biological Sciences, College of Natural Sciences and Mathematics, University of Toledo, 3050 W. Towerview Blvd, Toledo, OH, 43606, USA.
- Department of Urology, College of Medicine and Life Sciences, University of Toledo, Toledo, OH, USA.
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4
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Thomalla JM, Wolfner MF. Reproductive biology: A genetic recipe for parthenogenesis. Curr Biol 2023; 33:R904-R906. [PMID: 37699347 PMCID: PMC10753294 DOI: 10.1016/j.cub.2023.07.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
New work reveals differences in oogenic gene expression between parthenogenetic and sexually reproducing Drosophila mercatorum strains. Recapitulating those changes in D. melanogaster oocytes induced parthenogenesis in this normally sexually reproducing species, providing molecular insight into how these reproductive modes arise.
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Affiliation(s)
- Jonathon M Thomalla
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY, USA
| | - Mariana F Wolfner
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY, USA.
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5
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Liu J, Zhang C. Xenopus cell-free extracts and their applications in cell biology study. BIOPHYSICS REPORTS 2023; 9:195-205. [PMID: 38516620 PMCID: PMC10951473 DOI: 10.52601/bpr.2023.230016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 12/05/2023] [Indexed: 03/23/2024] Open
Abstract
Xenopus has proven to be a remarkably versatile model organism in the realm of biological research for numerous years, owing to its straightforward maintenance in laboratory settings and its abundant provision of ample-sized oocytes, eggs, and embryos. The cell cycle of these oocytes, eggs, and early embryos exhibits synchrony, and extracts derived from these cells serve various research purposes. Many fundamental concepts in biochemistry, cell biology, and development have been elucidated through the use of cell-free extracts derived from Xenopus cells. Over the past few decades, a wide array of cell-free extracts has been prepared from oocytes, eggs, and early embryos of different Xenopus species at varying cell cycle stages. Each of these extracts possesses distinct characteristics. This review provides a concise overview of the Xenopus species employed in laboratory research, the diverse types of cell-free extracts available, and their respective properties. Furthermore, this review delves into the extensive investigation of spindle assembly in Xenopus egg extracts, underscoring the versatility and potency of these cell-free systems in the realm of cell biology.
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Affiliation(s)
- Junjun Liu
- Department of Biological Sciences, California State Polytechnic University, Pomona, CA 91768, USA
| | - Chuanmao Zhang
- The Academy for Cell and Life Health, Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
- The Key Laboratory of Cell Proliferation and Differentiation of the Ministry of Education, College of Life Sciences, Peking University, Beijing 100871, China
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6
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Moretti E, Noto D, Corsaro R, Collodel G. Focus on centrin in normal and altered human spermatozoa. Syst Biol Reprod Med 2023; 69:175-187. [PMID: 36892570 DOI: 10.1080/19396368.2023.2181115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
Abstract
This review provides details on the role of centrin in human spermatozoa and in various forms of male infertility. Centrin is a calcium (Ca2+)-binding phosphoprotein that is located in the centrioles - which are typical structures of the sperm connecting piece and play a key role in centrosome dynamics during sperm morphogenesis - as well as in zygotes and early embryos during spindle assembly. In humans, three different centrin genes encoding three isoforms have been discovered. Centrin 1, the only one expressed in spermatozoa, seems to be lost inside the oocyte after fertilization. The sperm connecting piece is characterized by the presence of numerous proteins including centrin, that deserves particular attention because, in humans, it is enriched during maturation of the centrioles. In normal sperm, centrin 1 is visible as two distinct spots in the head-tail junction; however, in some defective spermatozoa, centrin 1 distribution is altered. Centrin has been studied in humans and animal models. Its mutations may lead to several structural alterations, such as serious defects in the connective piece and, subsequently, fertilization failure or incomplete embryonic development. However, the effects of these abnormalities on male fertility have not been fully studied. Because the presence and the function of centrin in the sperm connecting piece appears important for reproductive success, additional studies are needed to bring medical benefits in resolving some cases of idiopathic infertility.
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Affiliation(s)
- Elena Moretti
- Department Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | - Daria Noto
- Department Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | - Roberta Corsaro
- Department Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | - Giulia Collodel
- Department Molecular and Developmental Medicine, University of Siena, Siena, Italy
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7
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Uzbekov RE, Avidor-Reiss T. The Centrosome: Conclusions and Perspectives. Cells 2022; 11:cells11233931. [PMID: 36497189 PMCID: PMC9739391 DOI: 10.3390/cells11233931] [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: 11/22/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022] Open
Abstract
The centrosome consists of two centrioles surrounded by pericentriolar material [...].
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Affiliation(s)
- Rustem E. Uzbekov
- Faculté de Médecine, Université de Tours, 10, Boulevard Tonnellé, 37032 Tours, France
- Faculty of Bioengineering and Bioinformatics, Moscow State University, Leninskye Gory 73, 119992 Moscow, Russia
- Correspondence: ; Tel.: +33-2-3437-9692
| | - Tomer Avidor-Reiss
- Department of Biological Sciences, University of Toledo, 3050 W. Towerview Blvd, Toledo, OH 43606, USA
- Department of Urology, College of Medicine and Life Sciences, University of Toledo, Toledo, OH 43607, USA
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8
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Avidor-Reiss T, Achinger L, Uzbekov R. The Centriole's Role in Miscarriages. Front Cell Dev Biol 2022; 10:864692. [PMID: 35300410 PMCID: PMC8922021 DOI: 10.3389/fcell.2022.864692] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 02/14/2022] [Indexed: 12/17/2022] Open
Abstract
Centrioles are subcellular organelles essential for normal cell function and development; they form the cell’s centrosome (a major cytoplasmic microtubule organization center) and cilium (a sensory and motile hair-like cellular extension). Centrioles with evolutionarily conserved characteristics are found in most animal cell types but are absent in egg cells and exhibit unexpectedly high structural, compositional, and functional diversity in sperm cells. As a result, the centriole’s precise role in fertility and early embryo development is unclear. The centrioles are found in the spermatozoan neck, a strategic location connecting two central functional units: the tail, which propels the sperm to the egg and the head, which holds the paternal genetic material. The spermatozoan neck is an ideal site for evolutionary innovation as it can control tail movement pre-fertilization and the male pronucleus’ behavior post-fertilization. We propose that human, bovine, and most other mammals–which exhibit ancestral centriole-dependent reproduction and two spermatozoan centrioles, where one canonical centriole is maintained, and one atypical centriole is formed–adapted extensive species-specific centriolar features. As a result, these centrioles have a high post-fertilization malfunction rate, resulting in aneuploidy, and miscarriages. In contrast, house mice evolved centriole-independent reproduction, losing the spermatozoan centrioles and overcoming a mechanism that causes miscarriages.
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Affiliation(s)
- Tomer Avidor-Reiss
- Department of Biological Sciences, University of Toledo, Toledo, OH, United States.,Department of Urology, College of Medicine and Life Sciences, University of Toledo, Toledo, OH, United States
| | - Luke Achinger
- Department of Biological Sciences, University of Toledo, Toledo, OH, United States
| | - Rustem Uzbekov
- Faculté de Médecine, Université de Tours, Tours, France.,Faculty of Bioengineering and Bioinformatics, Moscow State University, Moscow, Russia
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9
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Atypical Centriolar Composition Correlates with Internal Fertilization in Fish. Cells 2022; 11:cells11050758. [PMID: 35269380 PMCID: PMC8909020 DOI: 10.3390/cells11050758] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 02/11/2022] [Accepted: 02/17/2022] [Indexed: 01/27/2023] Open
Abstract
The sperm competition theory, as proposed by Geoff Parker, predicts that sperm evolve through a cascade of changes. As an example, internal fertilization is followed by sperm morphology diversification. However, little is known about the evolution of internal sperm structures. The centriole has an ancient and evolutionarily conserved canonical structure with signature 9-fold, radially symmetric microtubules that form the cell’s centrosomes, cilia, and flagella. Most animal spermatozoa have two centrioles, one of which forms the spermatozoan flagellum. Both are delivered to the egg and constitute the embryo’s first two centrosomes. The spermatozoa of mammals and insects only have one recognizable centriole with a canonical structure. A second sperm centriole with an atypical structure was recently reported in both animal groups and which, prior to this, eluded discovery by standard techniques and criteria. Because the ancestors of both mammals and insects reproduced by internal fertilization, we hypothesized that the transition from two centrioles with canonical composition in ancestral sperm to an atypical centriolar composition characterized by only one canonical centriole evolved preferentially after internal fertilization. We examined fish because of the diversity of species available to test this hypothesis−as some species reproduce via internal and others via external fertilization−and because their spermatozoan ultrastructure has been extensively studied. Our literature search reports on 277 fish species. Species reported with atypical centriolar composition are specifically enriched among internal fertilizers compared to external fertilizers (7/34, 20.6% versus 2/243, 0.80%; p < 0.00001, odds ratio = 32.4) and represent phylogenetically unrelated fish. Atypical centrioles are present in the internal fertilizers of the subfamily Poeciliinae. Therefore, internally fertilizing fish preferentially and independently evolved spermatozoa with atypical centriolar composition multiple times, agreeing with Parker’s cascade theory.
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10
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Alzyoud E, Vedelek V, Réthi-Nagy Z, Lipinszki Z, Sinka R. Microtubule Organizing Centers Contain Testis-Specific γ-TuRC Proteins in Spermatids of Drosophila. Front Cell Dev Biol 2021; 9:727264. [PMID: 34660584 PMCID: PMC8511327 DOI: 10.3389/fcell.2021.727264] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 09/10/2021] [Indexed: 11/17/2022] Open
Abstract
Microtubule nucleation in eukaryotes is primarily promoted by γ-tubulin and the evolutionary conserved protein complex, γ-Tubulin Ring Complex (γ-TuRC). γ-TuRC is part of the centrosome and basal body, which are the best-known microtubule-organizing centers. Centrosomes undergo intensive and dynamic changes during spermatogenesis, as they turn into basal bodies, a prerequisite for axoneme formation during spermatogenesis. Here we describe the existence of a novel, tissue-specific γ-TuRC in Drosophila. We characterize three genes encoding testis-specific components of γ-TuRC (t-γ-TuRC) and find that presence of t-γ-TuRC is essential to male fertility. We show the diverse subcellular distribution of the t-γ-TuRC proteins during post-meiotic development, at first at the centriole adjunct and then also on the anterior tip of the nucleus, and finally, they appear in the tail region, close to the mitochondria. We also prove the physical interactions between the t-γ-TuRC members, γ-tubulin and Mozart1. Our results further indicate heterogeneity in γ-TuRC composition during spermatogenesis and suggest that the different post-meiotic microtubule organizing centers are orchestrated by testis-specific gene products, including t-γ-TuRC.
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Affiliation(s)
- Elham Alzyoud
- Department of Genetics, University of Szeged, Szeged, Hungary
- Faculty of Science and Informatics, Doctoral School of Biology, University of Szeged, Szeged, Hungary
| | - Viktor Vedelek
- Department of Genetics, University of Szeged, Szeged, Hungary
| | - Zsuzsánna Réthi-Nagy
- Faculty of Science and Informatics, Doctoral School of Biology, University of Szeged, Szeged, Hungary
- Biological Research Centre, Institute of Biochemistry, MTA SZBK Lendület Laboratory of Cell Cycle Regulation, Eötvös Loránd Research Network (ELKH), Szeged, Hungary
| | - Zoltán Lipinszki
- Biological Research Centre, Institute of Biochemistry, MTA SZBK Lendület Laboratory of Cell Cycle Regulation, Eötvös Loránd Research Network (ELKH), Szeged, Hungary
| | - Rita Sinka
- Department of Genetics, University of Szeged, Szeged, Hungary
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11
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Khanal S, Leung MR, Royfman A, Fishman EL, Saltzman B, Bloomfield-Gadêlha H, Zeev-Ben-Mordehai T, Avidor-Reiss T. A dynamic basal complex modulates mammalian sperm movement. Nat Commun 2021; 12:3808. [PMID: 34155206 PMCID: PMC8217517 DOI: 10.1038/s41467-021-24011-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 05/28/2021] [Indexed: 01/04/2023] Open
Abstract
Reproductive success depends on efficient sperm movement driven by axonemal dynein-mediated microtubule sliding. Models predict sliding at the base of the tail - the centriole - but such sliding has never been observed. Centrioles are ancient organelles with a conserved architecture; their rigidity is thought to restrict microtubule sliding. Here, we show that, in mammalian sperm, the atypical distal centriole (DC) and its surrounding atypical pericentriolar matrix form a dynamic basal complex (DBC) that facilitates a cascade of internal sliding deformations, coupling tail beating with asymmetric head kinking. During asymmetric tail beating, the DC's right side and its surroundings slide ~300 nm rostrally relative to the left side. The deformation throughout the DBC is transmitted to the head-tail junction; thus, the head tilts to the left, generating a kinking motion. These findings suggest that the DBC evolved as a dynamic linker coupling sperm head and tail into a single self-coordinated system.
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Affiliation(s)
- Sushil Khanal
- Department of Biological Sciences, University of Toledo, Toledo, OH, USA
| | - Miguel Ricardo Leung
- The Division of Structural Biology, Wellcome Centre for Human Genetics, The University of Oxford, Oxford, UK
- Cryo-Electron Microscopy, Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, The Netherlands
| | - Abigail Royfman
- Department of Biological Sciences, University of Toledo, Toledo, OH, USA
| | - Emily L Fishman
- Department of Biological Sciences, University of Toledo, Toledo, OH, USA
| | - Barbara Saltzman
- School of Population Health, College of Health and Human Services, University of Toledo, Toledo, OH, USA
| | - Hermes Bloomfield-Gadêlha
- Department of Engineering Mathematics and Bristol Robotics Laboratory, University of Bristol, Bristol, UK
| | - Tzviya Zeev-Ben-Mordehai
- The Division of Structural Biology, Wellcome Centre for Human Genetics, The University of Oxford, Oxford, UK.
- Cryo-Electron Microscopy, Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, The Netherlands.
| | - Tomer Avidor-Reiss
- Department of Biological Sciences, University of Toledo, Toledo, OH, USA.
- Department of Urology, College of Medicine and Life Sciences, University of Toledo, Toledo, OH, USA.
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12
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Turner KA, Fishman EL, Asadullah M, Ott B, Dusza P, Shah TA, Sindhwani P, Nadiminty N, Molinari E, Patrizio P, Saltzman BS, Avidor-Reiss T. Fluorescence-Based Ratiometric Analysis of Sperm Centrioles (FRAC) Finds Patient Age and Sperm Morphology Are Associated With Centriole Quality. Front Cell Dev Biol 2021; 9:658891. [PMID: 33968935 PMCID: PMC8100587 DOI: 10.3389/fcell.2021.658891] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 03/19/2021] [Indexed: 12/22/2022] Open
Abstract
A large proportion of infertility and miscarriage causes are unknown. One potential cause is a defective sperm centriole, a subcellular structure essential for sperm motility and embryonic development. Yet, the extent to which centriolar maladies contribute to male infertility is unknown due to the lack of a convenient way to assess centriole quality. We developed a robust, location-based, ratiometric assay to overcome this roadblock, the Fluorescence-based Ratiometric Assessment of Centrioles (FRAC). We performed a case series study with semen samples from 33 patients, separated using differential gradient centrifugation into higher-grade (pellet) and lower-grade (interface) sperm fractions. Using a reference population of higher-grade sperm from infertile men with morphologically standard sperm, we found that 79% of higher-grade sperm of infertile men with substandard sperm morphology have suboptimal centrioles (P = 0.0005). Moreover, tubulin labeling of the sperm distal centriole correlates negatively with age (P = 0.004, R = -0.66). These findings suggest that FRAC is a sensitive method and that patient age and sperm morphology are associated with centriole quality.
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Affiliation(s)
- Katerina A. Turner
- Department of Biological Sciences, College of Natural Sciences and Mathematics, University of Toledo, Toledo, OH, United States
| | - Emily L. Fishman
- Department of Biological Sciences, College of Natural Sciences and Mathematics, University of Toledo, Toledo, OH, United States
| | - Mariam Asadullah
- Department of Biological Sciences, College of Natural Sciences and Mathematics, University of Toledo, Toledo, OH, United States
| | - Brooke Ott
- Department of Biological Sciences, College of Natural Sciences and Mathematics, University of Toledo, Toledo, OH, United States
| | - Patrick Dusza
- Department of Biological Sciences, College of Natural Sciences and Mathematics, University of Toledo, Toledo, OH, United States
| | - Tariq A. Shah
- Department of Urology, College of Medicine and Life Sciences, University of Toledo, Toledo, OH, United States
| | - Puneet Sindhwani
- Department of Urology, College of Medicine and Life Sciences, University of Toledo, Toledo, OH, United States
| | - Nagalakshmi Nadiminty
- Department of Urology, College of Medicine and Life Sciences, University of Toledo, Toledo, OH, United States
| | - Emanuela Molinari
- Yale Fertility Center, Yale School of Medicine, New Haven, CT, United States
| | - Pasquale Patrizio
- Yale Fertility Center, Yale School of Medicine, New Haven, CT, United States
| | - Barbara S. Saltzman
- School of Population Health, College of Health and Human Services, University of Toledo, Toledo, OH, United States
| | - Tomer Avidor-Reiss
- Department of Biological Sciences, College of Natural Sciences and Mathematics, University of Toledo, Toledo, OH, United States
- Department of Urology, College of Medicine and Life Sciences, University of Toledo, Toledo, OH, United States
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13
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Avidor-Reiss T, Carr A, Fishman EL. The sperm centrioles. Mol Cell Endocrinol 2020; 518:110987. [PMID: 32810575 PMCID: PMC7606549 DOI: 10.1016/j.mce.2020.110987] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 08/07/2020] [Accepted: 08/10/2020] [Indexed: 12/13/2022]
Abstract
Centrioles are eukaryotic subcellular structures that produce and regulate massive cytoskeleton superstructures. They form centrosomes and cilia, regulate new centriole formation, anchor cilia to the cell, and regulate cilia function. These basic centriolar functions are executed in sperm cells during their amplification from spermatogonial stem cells during their differentiation to spermatozoa, and finally, after fertilization, when the sperm fuses with the egg. However, sperm centrioles exhibit many unique characteristics not commonly observed in other cell types, including structural remodeling, centriole-flagellum transition zone migration, and cell membrane association during meiosis. Here, we discuss five roles of sperm centrioles: orchestrating early spermatogenic cell divisions, forming the spermatozoon flagella, linking the spermatozoon head and tail, controlling sperm tail beating, and organizing the cytoskeleton of the zygote post-fertilization. We present the historic discovery of the centriole as a sperm factor that initiates embryogenesis, and recent genetic studies in humans and other mammals evaluating the current evidence for the five functions of sperm centrioles. We also examine information connecting the various sperm centriole functions to distinct clinical phenotypes. The emerging picture is that centrioles are essential sperm components with remarkable functional diversity and specialization that will require extensive and in-depth future studies.
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Affiliation(s)
- Tomer Avidor-Reiss
- Department of Biological Sciences, College of Natural Sciences and Mathematics, University of Toledo, Toledo, OH, USA; Department of Urology, College of Medicine and Life Sciences, University of Toledo, Toledo, OH, USA.
| | - Alexa Carr
- Department of Biological Sciences, College of Natural Sciences and Mathematics, University of Toledo, Toledo, OH, USA
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14
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Riparbelli MG, Persico V, Dallai R, Callaini G. Centrioles and Ciliary Structures during Male Gametogenesis in Hexapoda: Discovery of New Models. Cells 2020; 9:cells9030744. [PMID: 32197383 PMCID: PMC7140630 DOI: 10.3390/cells9030744] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/08/2020] [Accepted: 03/10/2020] [Indexed: 12/12/2022] Open
Abstract
Centrioles are-widely conserved barrel-shaped organelles present in most organisms. They are indirectly involved in the organization of the cytoplasmic microtubules both in interphase and during the cell division by recruiting the molecules needed for microtubule nucleation. Moreover, the centrioles are required to assemble cilia and flagella by the direct elongation of their microtubule wall. Due to the importance of the cytoplasmic microtubules in several aspects of the cell life, any defect in centriole structure can lead to cell abnormalities that in humans may result in significant diseases. Many aspects of the centriole dynamics and function have been clarified in the last years, but little attention has been paid to the exceptions in centriole structure that occasionally appeared within the animal kingdom. Here, we focused our attention on non-canonical aspects of centriole architecture within the Hexapoda. The Hexapoda is one of the major animal groups and represents a good laboratory in which to examine the evolution and the organization of the centrioles. Although these findings represent obvious exceptions to the established rules of centriole organization, they may contribute to advance our understanding of the formation and the function of these organelles.
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Affiliation(s)
- Maria Giovanna Riparbelli
- Department of Life Sciences, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy; (M.G.R.); (V.P.); (R.D.)
| | - Veronica Persico
- Department of Life Sciences, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy; (M.G.R.); (V.P.); (R.D.)
| | - Romano Dallai
- Department of Life Sciences, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy; (M.G.R.); (V.P.); (R.D.)
| | - Giuliano Callaini
- Department of Life Sciences, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy; (M.G.R.); (V.P.); (R.D.)
- Department of Medical Biotechnologies, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy
- Correspondence: ; Tel.: +39-57-723-4475
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15
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Avidor-Reiss T, Mazur M, Fishman EL, Sindhwani P. The Role of Sperm Centrioles in Human Reproduction - The Known and the Unknown. Front Cell Dev Biol 2019; 7:188. [PMID: 31632960 PMCID: PMC6781795 DOI: 10.3389/fcell.2019.00188] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 08/23/2019] [Indexed: 01/02/2023] Open
Abstract
Each human spermatozoon contains two remodeled centrioles that it contributes to the zygote. There, the centrioles reconstitute a centrosome that assembles the sperm aster and participate in pronuclei migration and cleavage. Thus, centriole abnormalities may be a cause of male factor infertility and failure to carry pregnancy to term. However, the precise mechanisms by which sperm centrioles contribute to embryonic development in humans are still unclear, making the search for a link between centriole abnormalities and impaired male fecundity particularly difficult. Most previous investigations into the role of mammalian centrioles during fertilization have been completed in murine models; however, because mouse sperm and zygotes appear to lack centrioles, these studies provide information that is limited in its applicability to humans. Here, we review studies that examine the role of the sperm centrioles in the early embryo, with particular emphasis on humans. Available literature includes case studies and case-control studies, with a few retrospective studies and no prospective studies reported. This literature has provided some insight into the morphological characteristics of sperm centrioles in the zygote and has allowed identification of some centriole abnormalities in rare cases. Many of these studies suggest centriole involvement in early embryogenesis based on phenotypes of the embryo with only indirect evidence for centriole abnormality. Overall, these studies suggest that centriole abnormalities are present in some cases of sperm with asthenoteratozoospermia and unexplained infertility. Yet, most previously published studies have been restricted by the laborious techniques (like electron microscopy) and the limited availability of centriolar markers, resulting in small-scale studies and the lack of solid causational evidence. With recent progress in sperm centriole biology, such as the identification of the unique composition of sperm centrioles and the discovery of the atypical centriole, it is now possible to begin to fill the gaps in sperm centriole epidemiology and to identify the etiology of sperm centriole dysfunction in humans.
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Affiliation(s)
- Tomer Avidor-Reiss
- Department of Biological Sciences, College of Natural Sciences and Mathematics, The University of Toledo, Toledo, OH, United States.,Department of Urology, College of Medicine and Life Sciences, The University of Toledo, Toledo, OH, United States
| | - Matthew Mazur
- Department of Biological Sciences, College of Natural Sciences and Mathematics, The University of Toledo, Toledo, OH, United States.,Department of Urology, College of Medicine and Life Sciences, The University of Toledo, Toledo, OH, United States
| | - Emily L Fishman
- Department of Biological Sciences, College of Natural Sciences and Mathematics, The University of Toledo, Toledo, OH, United States
| | - Puneet Sindhwani
- Department of Biological Sciences, College of Natural Sciences and Mathematics, The University of Toledo, Toledo, OH, United States.,Department of Urology, College of Medicine and Life Sciences, The University of Toledo, Toledo, OH, United States
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16
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Jo KH, Jaiswal A, Khanal S, Fishman EL, Curry AN, Avidor-Reiss T. Poc1B and Sas-6 Function Together during the Atypical Centriole Formation in Drosophila melanogaster. Cells 2019; 8:cells8080841. [PMID: 31387336 PMCID: PMC6721650 DOI: 10.3390/cells8080841] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 07/25/2019] [Accepted: 07/29/2019] [Indexed: 12/16/2022] Open
Abstract
Insects and mammals have atypical centrioles in their sperm. However, it is unclear how these atypical centrioles form. Drosophila melanogaster sperm has one typical centriole called the giant centriole (GC) and one atypical centriole called the proximal centriole-like structure (PCL). During early sperm development, centriole duplication factors such as Ana2 and Sas-6 are recruited to the GC base to initiate PCL formation. The centriolar protein, Poc1B, is also recruited at this initiation stage, but its precise role during PCL formation is unclear. Here, we show that Poc1B recruitment was dependent on Sas-6, that Poc1B had effects on cellular and PCL Sas-6, and that Poc1B and Sas-6 were colocalized in the PCL/centriole core. These findings suggest that Sas-6 and Poc1B interact during PCL formation. Co-overexpression of Ana2 and Sas-6 induced the formation of ectopic particles that contained endogenous Poc1 proteins and were composed of PCL-like structures. These structures were disrupted in Poc1 mutant flies, suggesting that Poc1 proteins stabilize the PCL-like structures. Lastly, Poc1B and Sas-6 co-overexpression also induced the formation of PCL-like structures, suggesting that they can function together during the formation of the PCL. Overall, our findings suggest that Poc1B and Sas-6 function together during PCL formation.
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Affiliation(s)
- Kyoung H Jo
- Department of Biological Sciences, University of Toledo, Toledo, OH 43607, USA
| | - Ankit Jaiswal
- Department of Biological Sciences, University of Toledo, Toledo, OH 43607, USA
| | - Sushil Khanal
- Department of Biological Sciences, University of Toledo, Toledo, OH 43607, USA
| | - Emily L Fishman
- Department of Biological Sciences, University of Toledo, Toledo, OH 43607, USA
| | - Alaina N Curry
- Department of Biological Sciences, University of Toledo, Toledo, OH 43607, USA
| | - Tomer Avidor-Reiss
- Department of Biological Sciences, University of Toledo, Toledo, OH 43607, USA.
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17
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Dallai R, Mercati D, Lino-Neto J, Dias G, Folly C, Lupetti P. The peculiar structure of the flagellar axoneme in Coccinellidae (Insecta-Coleoptera). ARTHROPOD STRUCTURE & DEVELOPMENT 2019; 49:50-61. [PMID: 30445115 DOI: 10.1016/j.asd.2018.11.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 11/06/2018] [Accepted: 11/09/2018] [Indexed: 06/09/2023]
Abstract
The ultrastructure of the complex organisation of the spermatozoa in Harmonia axyridis and Adalia decempunctata (Coccinellidae) was studied, with particular emphasis on the origin of the anterior shifting of the axonemal structure, which becomes parallel to the nucleus in the sperm flagellum. In studying the spermiogenesis, a centriolar remodelling was observed with the long centriole, present in the early spermatids, transformed in the spermatozoa into an exceptionally long and narrowed basal body (about 0.16 × 3.5-4.0 μm long) displaying a 9 + 0 microtubular pattern in the proximal part and a 9 + 2 pattern in the following part; this is a characteristic not observed in any other pterygotan insect. The sperm also have a very long acrosome surrounded by a dense layer of material extending along the whole basal body. These two uncommon features were discussed in the light of sperm movement.
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Affiliation(s)
- Romano Dallai
- Dipartimento Scienze della Vita, Università degli Studi di Siena, Via Aldo Moro 2, 53100 Siena, Italy.
| | - David Mercati
- Dipartimento Scienze della Vita, Università degli Studi di Siena, Via Aldo Moro 2, 53100 Siena, Italy.
| | - José Lino-Neto
- Departamento de Biologia Geral, Universidade Federal de Viçosa, 36570-900 Viçosa, Minas Gerais, Brazil.
| | - Glenda Dias
- Departamento de Biologia Geral, Universidade Federal de Viçosa, 36570-900 Viçosa, Minas Gerais, Brazil.
| | - Camilla Folly
- Departamento de Biologia Geral, Universidade Federal de Viçosa, 36570-900 Viçosa, Minas Gerais, Brazil.
| | - Pietro Lupetti
- Dipartimento Scienze della Vita, Università degli Studi di Siena, Via Aldo Moro 2, 53100 Siena, Italy.
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18
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Avidor-Reiss T, Fishman EL. It takes two (centrioles) to tango. Reproduction 2019; 157:R33-R51. [PMID: 30496124 PMCID: PMC6494718 DOI: 10.1530/rep-18-0350] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 11/29/2018] [Indexed: 12/11/2022]
Abstract
Cells that divide during embryo development require precisely two centrioles during interphase and four centrioles during mitosis. This precise number is maintained by allowing each centriole to nucleate only one centriole per cell cycle (i.e. centriole duplication). Yet, how the first cell of the embryo, the zygote, obtains two centrioles has remained a mystery in most mammals and insects. The mystery arose because the female gamete (oocyte) is thought to have no functional centrioles and the male gamete (spermatozoon) is thought to have only one functional centriole, resulting in a zygote with a single centriole. However, recent studies in fruit flies, beetles and mammals, including humans, suggest an alternative explanation: spermatozoa have a typical centriole and an atypical centriole. The sperm typical centriole has a normal structure but distinct protein composition, whereas the sperm atypical centriole is distinct in both. During fertilization, the atypical centriole is released into the zygote, nucleates a new centriole and participates in spindle pole formation. Thus, the spermatozoa's atypical centriole acts as a second centriole in the zygote. Here, we review centriole biology in general and especially in reproduction, we describe the discovery of the spermatozoon atypical centriole, and we provide an updated model for centriole inherence during sexual reproduction. While we focus on humans and other non-rodent mammals, we also provide a broader evolutionary perspective.
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Affiliation(s)
- Tomer Avidor-Reiss
- Department of Biological Sciences, University of Toledo, 2801 W. Bancroft Rd., Wolfe Hall 4259, Toledo, OH 43606
| | - Emily L. Fishman
- Department of Biological Sciences, University of Toledo, 2801 W. Bancroft Rd., Wolfe Hall 4259, Toledo, OH 43606
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19
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Blake-Hedges C, Megraw TL. Coordination of Embryogenesis by the Centrosome in Drosophila melanogaster. Results Probl Cell Differ 2019; 67:277-321. [PMID: 31435800 DOI: 10.1007/978-3-030-23173-6_12] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The first 3 h of Drosophila melanogaster embryo development are exemplified by rapid nuclear divisions within a large syncytium, transforming the zygote to the cellular blastoderm after 13 successive cleavage divisions. As the syncytial embryo develops, it relies on centrosomes and cytoskeletal dynamics to transport nuclei, maintain uniform nuclear distribution throughout cleavage cycles, ensure generation of germ cells, and coordinate cellularization. For the sake of this review, we classify six early embryo stages that rely on processes coordinated by the centrosome and its regulation of the cytoskeleton. The first stage features migration of one of the female pronuclei toward the male pronucleus following maturation of the first embryonic centrosomes. Two subsequent stages distribute the nuclei first axially and then radially in the embryo. The remaining three stages involve centrosome-actin dynamics that control cortical plasma membrane morphogenesis. In this review, we highlight the dynamics of the centrosome and its role in controlling the six stages that culminate in the cellularization of the blastoderm embryo.
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Affiliation(s)
- Caitlyn Blake-Hedges
- Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, FL, USA.
| | - Timothy L Megraw
- Department of Biomedical Sciences, College of Medicine, Florida State University, Tallahassee, FL, USA
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20
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Avidor-Reiss T, Turner K. The Evolution of Centriole Structure: Heterochrony, Neoteny, and Hypermorphosis. Results Probl Cell Differ 2019; 67:3-15. [PMID: 31435789 DOI: 10.1007/978-3-030-23173-6_1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Centrioles are subcellular organelles that were present in the last eukaryotic common ancestor, where the centriole's ancestral role was to form cilia. Centrioles have maintained a remarkably conserved structure in eukaryotes that have cilia, while groups that lack cilia have lost their centrioles, highlighting the structure-function relationship that exists between the centriole and the cilium. In contrast, animal sperm cells, a ciliated cell, exhibit remarkable structural diversity in the centriole. Understanding how this structural diversity evolved may provide insight into centriole assembly and function, as well as their unique role in sperm. Here, we apply concepts used in the study of the evolution of animal morphology to gain insight into the evolution of centriole structure. We propose that centrioles with an atypical structure form because of changes in the timing of centriole assembly events, which can be described as centriolar "heterochrony." Atypical centrioles of insects and mammals appear to have evolved through different types of heterochrony. Here, we discuss two particular types of heterochrony: neoteny and hypermorphosis. The centriole assembly of insect sperm cells exhibits the retention of "juvenile" centriole structure, which can be described as centriolar "neoteny." Mammalian sperm cells have an extended centriole assembly program through the addition of novel steps such as centrosome reduction and centriole remodeling to form atypical centrioles, a form of centriole "hypermorphosis." Overall, centriole heterochrony appears to be a common mechanism for the development of the atypical centriole during the evolution of centriole assembly of various animals' sperm.
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Affiliation(s)
- Tomer Avidor-Reiss
- Department of Biological Sciences, University of Toledo, Toledo, OH, USA.
| | - Katerina Turner
- Department of Biological Sciences, University of Toledo, Toledo, OH, USA
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21
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Subcellular Specialization and Organelle Behavior in Germ Cells. Genetics 2018; 208:19-51. [PMID: 29301947 DOI: 10.1534/genetics.117.300184] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2016] [Accepted: 08/17/2017] [Indexed: 11/18/2022] Open
Abstract
Gametes, eggs and sperm, are the highly specialized cell types on which the development of new life solely depends. Although all cells share essential organelles, such as the ER (endoplasmic reticulum), Golgi, mitochondria, and centrosomes, germ cells display unique regulation and behavior of organelles during gametogenesis. These germ cell-specific functions of organelles serve critical roles in successful gamete production. In this chapter, I will review the behaviors and roles of organelles during germ cell differentiation.
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22
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Tillery MML, Blake-Hedges C, Zheng Y, Buchwalter RA, Megraw TL. Centrosomal and Non-Centrosomal Microtubule-Organizing Centers (MTOCs) in Drosophila melanogaster. Cells 2018; 7:E121. [PMID: 30154378 PMCID: PMC6162459 DOI: 10.3390/cells7090121] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 08/19/2018] [Accepted: 08/20/2018] [Indexed: 12/14/2022] Open
Abstract
The centrosome is the best-understood microtubule-organizing center (MTOC) and is essential in particular cell types and at specific stages during Drosophila development. The centrosome is not required zygotically for mitosis or to achieve full animal development. Nevertheless, centrosomes are essential maternally during cleavage cycles in the early embryo, for male meiotic divisions, for efficient division of epithelial cells in the imaginal wing disc, and for cilium/flagellum assembly in sensory neurons and spermatozoa. Importantly, asymmetric and polarized division of stem cells is regulated by centrosomes and by the asymmetric regulation of their microtubule (MT) assembly activity. More recently, the components and functions of a variety of non-centrosomal microtubule-organizing centers (ncMTOCs) have begun to be elucidated. Throughout Drosophila development, a wide variety of unique ncMTOCs form in epithelial and non-epithelial cell types at an assortment of subcellular locations. Some of these cell types also utilize the centrosomal MTOC, while others rely exclusively on ncMTOCs. The impressive variety of ncMTOCs being discovered provides novel insight into the diverse functions of MTOCs in cells and tissues. This review highlights our current knowledge of the composition, assembly, and functional roles of centrosomal and non-centrosomal MTOCs in Drosophila.
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Affiliation(s)
- Marisa M L Tillery
- Department of Biomedical Sciences, Florida State University, 1115 West Call St., Tallahassee, FL 32306, USA.
| | - Caitlyn Blake-Hedges
- Department of Biomedical Sciences, Florida State University, 1115 West Call St., Tallahassee, FL 32306, USA.
| | - Yiming Zheng
- Department of Biomedical Sciences, Florida State University, 1115 West Call St., Tallahassee, FL 32306, USA.
| | - Rebecca A Buchwalter
- Department of Biomedical Sciences, Florida State University, 1115 West Call St., Tallahassee, FL 32306, USA.
| | - Timothy L Megraw
- Department of Biomedical Sciences, Florida State University, 1115 West Call St., Tallahassee, FL 32306, USA.
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23
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Rapid Evolution of Sperm Produces Diverse Centriole Structures that Reveal the Most Rudimentary Structure Needed for Function. Cells 2018; 7:cells7070067. [PMID: 29949922 PMCID: PMC6071034 DOI: 10.3390/cells7070067] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 06/22/2018] [Accepted: 06/22/2018] [Indexed: 11/17/2022] Open
Abstract
Centrioles are ancient subcellular protein-based organelles that maintain a conserved number and structure across many groups of eukaryotes. Centriole number (two per cells) is tightly regulated; each pre-existing centriole nucleates only one centriole as the cell prepares for division. The structure of centrioles is barrel-shaped, with a nine-fold symmetry of microtubules. This organization of microtubules is essential for the ancestral function of centriole–cilium nucleation. In animal cells, centrioles have gained an additional role: recruiting pericentriolar material (PCM) to form a centrosome. Therefore, it is striking that in animal spermatozoa, the centrioles have a remarkable diversity of structures, where some are so anomalous that they are referred to as atypical centrioles and are barely recognizable. The atypical centriole maintains the ability to form a centrosome and nucleate a new centriole, and therefore reveals the most rudimentary structure that is needed for centriole function. However, the atypical centriole appears to be incapable of forming a cilium. Here, we propose that the diversity in sperm centriole structure is due to rapid evolution in the shape of the spermatozoa head and neck. The enhanced diversity may be driven by a combination of direct selection for novel centriole functions and pleiotropy, which eliminates centriole properties that are dispensable in the spermatozoa function.
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24
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Fishman EL, Jo K, Nguyen QPH, Kong D, Royfman R, Cekic AR, Khanal S, Miller AL, Simerly C, Schatten G, Loncarek J, Mennella V, Avidor-Reiss T. A novel atypical sperm centriole is functional during human fertilization. Nat Commun 2018; 9:2210. [PMID: 29880810 PMCID: PMC5992222 DOI: 10.1038/s41467-018-04678-8] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 05/15/2018] [Indexed: 11/18/2022] Open
Abstract
The inheritance of the centrosome during human fertilization remains mysterious. Here we show that the sperm centrosome contains, in addition to the known typical barrel-shaped centriole (the proximal centriole, PC), a surrounding matrix (pericentriolar material, PCM), and an atypical centriole (distal centriole, DC) composed of splayed microtubules surrounding previously undescribed rods of centriole luminal proteins. The sperm centrosome is remodeled by both reduction and enrichment of specific proteins and the formation of these rods during spermatogenesis. In vivo and in vitro investigations show that the flagellum-attached, atypical DC is capable of recruiting PCM, forming a daughter centriole, and localizing to the spindle pole during mitosis. Altogether, we show that the DC is compositionally and structurally remodeled into an atypical centriole, which functions as the zygote's second centriole. These findings now provide novel avenues for diagnostics and therapeutic strategies for male infertility, and insights into early embryo developmental defects.
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Affiliation(s)
- Emily L Fishman
- Department of Biological Sciences, University of Toledo, 2801W. Bancroft, Toledo, OH, 43607, USA
| | - Kyoung Jo
- Department of Biological Sciences, University of Toledo, 2801W. Bancroft, Toledo, OH, 43607, USA
| | - Quynh P H Nguyen
- Cell Biology Program, The Hospital for Sick Children, Department of Biochemistry, University of Toronto, 555 University Avenue, Toronto, ON, M5G 1X8, Canada
| | - Dong Kong
- Laboratory of Protein Dynamics and Signaling, Center for Cancer Research, National Cancer Institute, 1050 Boyles Street, Frederick, MD, 21702, USA
| | - Rachel Royfman
- Department of Biological Sciences, University of Toledo, 2801W. Bancroft, Toledo, OH, 43607, USA
| | - Anthony R Cekic
- Department of Biological Sciences, University of Toledo, 2801W. Bancroft, Toledo, OH, 43607, USA
| | - Sushil Khanal
- Department of Biological Sciences, University of Toledo, 2801W. Bancroft, Toledo, OH, 43607, USA
| | - Ann L Miller
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, 830 North University Ave, Ann Arbor, MI, 48109, USA
| | - Calvin Simerly
- Departments of Cell Biology; Obstetrics, Gynecology and Reproductive Sciences; and Bioengineering, Magee-Womens Research Institute, University of Pittsburgh School of Medicine, 204 Craft Avenue, Pittsburgh, PA, 15213, USA
| | - Gerald Schatten
- Departments of Cell Biology; Obstetrics, Gynecology and Reproductive Sciences; and Bioengineering, Magee-Womens Research Institute, University of Pittsburgh School of Medicine, 204 Craft Avenue, Pittsburgh, PA, 15213, USA
| | - Jadranka Loncarek
- Laboratory of Protein Dynamics and Signaling, Center for Cancer Research, National Cancer Institute, 1050 Boyles Street, Frederick, MD, 21702, USA
| | - Vito Mennella
- Cell Biology Program, The Hospital for Sick Children, Department of Biochemistry, University of Toronto, 555 University Avenue, Toronto, ON, M5G 1X8, Canada
| | - Tomer Avidor-Reiss
- Department of Biological Sciences, University of Toledo, 2801W. Bancroft, Toledo, OH, 43607, USA.
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25
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Inoue D, Wittbrodt J, Gruss OJ. Loss and Rebirth of the Animal Microtubule Organizing Center: How Maternal Expression of Centrosomal Proteins Cooperates with the Sperm Centriole in Zygotic Centrosome Reformation. Bioessays 2018. [PMID: 29522658 DOI: 10.1002/bies.201700135] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Centrosomes are the main microtubule organizing centers in animal cells. In particular during embryogenesis, they ensure faithful spindle formation and proper cell divisions. As metazoan centrosomes are eliminated during oogenesis, they have to be reassembled upon fertilization. Most metazoans use the sperm centrioles as templates for new centrosome biogenesis while the egg's cytoplasm re-prepares all components for on-going centrosome duplication in rapidly dividing embryonic cells. We discuss our knowledge and the experimental challenges to analyze zygotic centrosome reformation, which requires genetic experiments to enable scrutinizing respective male and female contributions. Male and female knockout animals and mRNA injection to mimic maternal expression of centrosomal proteins could point a way to the systematic molecular dissection of the process. The most recent data suggest that timely expression of centrosome components in oocytes is the key to zygotic centrosome reformation that uses male sperm as coordinators for de novo centrosome production.
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Affiliation(s)
- Daigo Inoue
- Dr. D. Inoue, Prof. Dr. J. Wittbrodt, Centre of Organismal Studies, University of Heidelberg, Im Neuenheimer Feld 230, 69120 Heidelberg, Germany
| | - Joachim Wittbrodt
- Dr. D. Inoue, Prof. Dr. J. Wittbrodt, Centre of Organismal Studies, University of Heidelberg, Im Neuenheimer Feld 230, 69120 Heidelberg, Germany
| | - Oliver J Gruss
- Prof. Dr. O. J. Gruss, Institute of Genetics, University of Bonn, Karlrobert-Kreiten-Str.13, 53115 Bonn, Germany
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26
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Dallai R, Mercati D, Lino-Neto J, Dias G, Lupetti P. Evidence of a procentriole during spermiogenesis in the coccinellid insect Adalia decempunctata (L): An ultrastructural study. ARTHROPOD STRUCTURE & DEVELOPMENT 2017; 46:815-823. [PMID: 29092794 DOI: 10.1016/j.asd.2017.10.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 10/26/2017] [Accepted: 10/27/2017] [Indexed: 06/07/2023]
Abstract
We studied spermatogenesis and spermiogenesis in Adalia decempunctata (L), a beetle of the Coccinellidae family. The spermatocyte exhibits two centrioles which elongate to form a pair of primary cilia. A novel structure, appearing in cross sections as a dense droplet, is observed near the long centriole during spermiogenesis, and is soon accompanied by a procentriole (PCL). PCL structure consists of singlet microtubules, a central tubule and an incomplete cartwheel. The PCL persists until the end of spermiogenesis, when it vanishes together with the dense droplet. The sperm has an exceptionally long basal body and the nucleus is disposed parallel to the flagellar components, a peculiar trait shared by other species of the coccinellid group. The presence of a procentriole suggested by the use of antibodies is discussed.
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Affiliation(s)
- Romano Dallai
- Dipartimento Scienze della Vita, Università degli Studi di Siena, Via Aldo Moro 2, 53100, Siena, Italy.
| | - David Mercati
- Dipartimento Scienze della Vita, Università degli Studi di Siena, Via Aldo Moro 2, 53100, Siena, Italy.
| | - José Lino-Neto
- Departamento de Biologia Geral, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.
| | - Glenda Dias
- Departamento de Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Universitário Morro do Cruzeiro, CEP, 35400-000, Ouro Preto, MG, Brazil.
| | - Pietro Lupetti
- Dipartimento Scienze della Vita, Università degli Studi di Siena, Via Aldo Moro 2, 53100, Siena, Italy.
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27
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Lattao R, Kovács L, Glover DM. The Centrioles, Centrosomes, Basal Bodies, and Cilia of Drosophila melanogaster. Genetics 2017; 206:33-53. [PMID: 28476861 PMCID: PMC5419478 DOI: 10.1534/genetics.116.198168] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 03/24/2017] [Indexed: 12/19/2022] Open
Abstract
Centrioles play a key role in the development of the fly. They are needed for the correct formation of centrosomes, the organelles at the poles of the spindle that can persist as microtubule organizing centers (MTOCs) into interphase. The ability to nucleate cytoplasmic microtubules (MTs) is a property of the surrounding pericentriolar material (PCM). The centriole has a dual life, existing not only as the core of the centrosome but also as the basal body, the structure that templates the formation of cilia and flagellae. Thus the structure and functions of the centriole, the centrosome, and the basal body have an impact upon many aspects of development and physiology that can readily be modeled in Drosophila Centrosomes are essential to give organization to the rapidly increasing numbers of nuclei in the syncytial embryo and for the spatially precise execution of cell division in numerous tissues, particularly during male meiosis. Although mitotic cell cycles can take place in the absence of centrosomes, this is an error-prone process that opens up the fly to developmental defects and the potential of tumor formation. Here, we review the structure and functions of the centriole, the centrosome, and the basal body in different tissues and cultured cells of Drosophila melanogaster, highlighting their contributions to different aspects of development and cell division.
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Affiliation(s)
- Ramona Lattao
- Department of Genetics, University of Cambridge, CB2 3EH, United Kingdom
| | - Levente Kovács
- Department of Genetics, University of Cambridge, CB2 3EH, United Kingdom
| | - David M Glover
- Department of Genetics, University of Cambridge, CB2 3EH, United Kingdom
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28
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Fishman EL, Jo K, Ha A, Royfman R, Zinn A, Krishnamurthy M, Avidor-Reiss T. Atypical centrioles are present in Tribolium sperm. Open Biol 2017; 7:160334. [PMID: 28298310 PMCID: PMC5376708 DOI: 10.1098/rsob.160334] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 02/15/2017] [Indexed: 12/19/2022] Open
Abstract
Typical centrioles are made of microtubules organized in ninefold symmetry. Most animal somatic cells have two centrioles for normal cell division and function. These centrioles originate from the zygote, but because the oocyte does not provide any centrioles, it is surprising that the zygotes of many animals are thought to inherit only one centriole from the sperm. Recently, in the sperm of Drosophila melanogaster, we discovered a second centriolar structure, the proximal centriole-like structure (PCL), which functions in the zygote. Whether the sperm of other insects has a second centriolar structure is unknown. Here, we characterized spermiogenesis in the red flour beetle, Tribolium castaneum Electron microscopy suggests that Tribolium has one microtubule-based centriole at the tip of the axoneme and a structure similar to the PCL, which lacks microtubules and lies in a cytoplasmic invagination of the nucleus. Immunostaining against the orthologue of the centriole/PCL protein, Ana1, also recognizes two centrioles near the nucleus during spermiogenesis: one that is microtubule-based at the tip of the axoneme, suggesting it is the centriole; and another that is more proximal and appears during early spermiogenesis, suggesting it is the PCL. Together, these findings suggest that Tribolium sperm has one microtubule-based centriole and one microtubule-lacking centriole.
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Affiliation(s)
- E L Fishman
- Department of Biological Sciences, The University of Toledo, Toledo, OH 43607, USA
| | - Kyoung Jo
- Department of Biological Sciences, The University of Toledo, Toledo, OH 43607, USA
| | - Andrew Ha
- Department of Biological Sciences, The University of Toledo, Toledo, OH 43607, USA
| | - Rachel Royfman
- Department of Biological Sciences, The University of Toledo, Toledo, OH 43607, USA
| | - Ashtyn Zinn
- Department of Biological Sciences, The University of Toledo, Toledo, OH 43607, USA
| | | | - Tomer Avidor-Reiss
- Department of Biological Sciences, The University of Toledo, Toledo, OH 43607, USA
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29
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Riparbelli MG, Gottardo M, Callaini G. Parthenogenesis in Insects: The Centriole Renaissance. Results Probl Cell Differ 2017; 63:435-479. [PMID: 28779329 DOI: 10.1007/978-3-319-60855-6_19] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Building a new organism usually requires the contribution of two differently shaped haploid cells, the male and female gametes, each providing its genetic material to restore diploidy of the new born zygote. The successful execution of this process requires defined sequential steps that must be completed in space and time. Otherwise, development fails. Relevant among the earlier steps are pronuclear migration and formation of the first mitotic spindle that promote the mixing of parental chromosomes and the formation of the zygotic nucleus. A complex microtubule network ensures the proper execution of these processes. Instrumental to microtubule organization and bipolar spindle assembly is a distinct non-membranous organelle, the centrosome. Centrosome inheritance during fertilization is biparental, since both gametes provide essential components to build a functional centrosome. This model does not explain, however, centrosome formation during parthenogenetic development, a special mode of sexual reproduction in which the unfertilized egg develops without the contribution of the male gamete. Moreover, whereas fertilization is a relevant example in which the cells actively check the presence of only one centrosome, to avoid multipolar spindle formation, the development of parthenogenetic eggs is ensured, at least in insects, by the de novo assembly of multiple centrosomes.Here, we will focus our attention on the assembly of functional centrosomes following fertilization and during parthenogenetic development in insects. Parthenogenetic development in which unfertilized eggs are naturally depleted of centrosomes would provide a useful experimental system to investigate centriole assembly and duplication together with centrosome formation and maturation.
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Affiliation(s)
| | - Marco Gottardo
- Department of Life Sciences, University of Siena, Via A. Moro 2, 53100, Siena, Italy
| | - Giuliano Callaini
- Department of Life Sciences, University of Siena, Via A. Moro 2, 53100, Siena, Italy.
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30
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Khire A, Jo KH, Kong D, Akhshi T, Blachon S, Cekic AR, Hynek S, Ha A, Loncarek J, Mennella V, Avidor-Reiss T. Centriole Remodeling during Spermiogenesis in Drosophila. Curr Biol 2016; 26:3183-3189. [PMID: 28094036 DOI: 10.1016/j.cub.2016.07.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 06/17/2016] [Accepted: 07/06/2016] [Indexed: 10/20/2022]
Abstract
The first cell of an animal (zygote) requires centrosomes that are assembled from paternally inherited centrioles and maternally inherited pericentriolar material (PCM) [1]. In some animals, sperm centrioles with typical ultrastructure are the origin of the first centrosomes in the zygote [2-4]. In other animals, however, sperm centrioles lose their proteins and are thought to be degenerated and non-functional during spermiogenesis [5, 6]. Here, we show that the two sperm centrioles (the giant centriole [GC] and the proximal centriole-like structure [PCL]) in Drosophila melanogaster are remodeled during spermiogenesis through protein enrichment and ultrastructure modification in parallel to previously described centrosomal reduction [7]. We found that the ultrastructure of the matured sperm (spermatozoa) centrioles is modified dramatically and that the PCL does not resemble a typical centriole. We also describe a new phenomenon of Poc1 enrichment of the atypical centrioles in the spermatozoa. Using various mutants, protein expression during spermiogenesis, and RNAi knockdown of paternal Poc1, we found that paternal Poc1 enrichment is essential for the formation of centrioles during spermiogenesis and for the formation of centrosomes after fertilization in the zygote. Altogether, these findings demonstrate that the sperm centrioles are remodeled both in their protein composition and in ultrastructure, yet they are functional and are essential for normal embryogenesis in Drosophila.
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Affiliation(s)
- Atul Khire
- Department of Biological Sciences, University of Toledo, 3050 W. Towerview Boulevard, Toledo, OH 43606, USA
| | - Kyoung H Jo
- Department of Biological Sciences, University of Toledo, 3050 W. Towerview Boulevard, Toledo, OH 43606, USA
| | - Dong Kong
- Laboratory of Protein Dynamics and Signaling, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702-1201, USA
| | - Tara Akhshi
- Department of Biochemistry, Cell Biology Program, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON M5G 1X8, Canada
| | | | - Anthony R Cekic
- Department of Biological Sciences, University of Toledo, 3050 W. Towerview Boulevard, Toledo, OH 43606, USA
| | - Sarah Hynek
- Department of Biological Sciences, University of Toledo, 3050 W. Towerview Boulevard, Toledo, OH 43606, USA
| | - Andrew Ha
- Department of Biological Sciences, University of Toledo, 3050 W. Towerview Boulevard, Toledo, OH 43606, USA
| | - Jadranka Loncarek
- Laboratory of Protein Dynamics and Signaling, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702-1201, USA
| | - Vito Mennella
- Department of Biochemistry, Cell Biology Program, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON M5G 1X8, Canada
| | - Tomer Avidor-Reiss
- Department of Biological Sciences, University of Toledo, 3050 W. Towerview Boulevard, Toledo, OH 43606, USA.
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31
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Jana SC, Bettencourt-Dias M, Durand B, Megraw TL. Drosophila melanogaster as a model for basal body research. Cilia 2016; 5:22. [PMID: 27382461 PMCID: PMC4932733 DOI: 10.1186/s13630-016-0041-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 04/01/2016] [Indexed: 01/09/2023] Open
Abstract
The fruit fly, Drosophila melanogaster, is one of the most extensively studied organisms in biological research and has centrioles/basal bodies and cilia that can be modelled to investigate their functions in animals generally. Centrioles are nine-fold symmetrical microtubule-based cylindrical structures required to form centrosomes and also to nucleate the formation of cilia and flagella. When they function to template cilia, centrioles transition into basal bodies. The fruit fly has various types of basal bodies and cilia, which are needed for sensory neuron and sperm function. Genetics, cell biology and behaviour studies in the fruit fly have unveiled new basal body components and revealed different modes of assembly and functions of basal bodies that are conserved in many other organisms, including human, green algae and plasmodium. Here we describe the various basal bodies of Drosophila, what is known about their composition, structure and function.
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Affiliation(s)
- Swadhin Chandra Jana
- Instituto Gulbenkian de Ciência, Rua da Quinta Grande, número 6, 2780-156 Oeiras, Portugal
| | | | - Bénédicte Durand
- Institut NeuroMyogène, CNRS UMR-5310 INSERM-U1217, Université Claude Bernard Lyon-1, Lyon, Villeurbanne, France
| | - Timothy L Megraw
- Department of Biomedical Sciences, Florida State University, Tallahassee, FL 32306 USA
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Abstract
The union of haploid gametes at fertilization initiates the formation of the diploid zygote in sexually reproducing animals. This founding event of embryogenesis includes several fascinating cellular and nuclear processes, such as sperm-egg cellular interactions, sperm chromatin remodelling, centrosome formation or pronuclear migration. In comparison with other aspects of development, the exploration of animal fertilization at the functional level has remained so far relatively limited, even in classical model organisms. Here, we have reviewed our current knowledge of fertilization in Drosophila melanogaster, with a special emphasis on the genes involved in the complex transformation of the fertilizing sperm nucleus into a replicated set of paternal chromosomes.
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Affiliation(s)
- Benjamin Loppin
- Laboratoire de Biométrie et Biologie Evolutive, CNRS UMR5558, Université Claude Bernard Lyon 1, Villeurbanne, France
| | - Raphaëlle Dubruille
- Laboratoire de Biométrie et Biologie Evolutive, CNRS UMR5558, Université Claude Bernard Lyon 1, Villeurbanne, France
| | - Béatrice Horard
- Laboratoire de Biométrie et Biologie Evolutive, CNRS UMR5558, Université Claude Bernard Lyon 1, Villeurbanne, France
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33
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Gottardo M, Callaini G, Riparbelli MG. Structural characterization of procentrioles in Drosophila spermatids. Cytoskeleton (Hoboken) 2015; 72:576-84. [PMID: 26492851 DOI: 10.1002/cm.21260] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Revised: 10/15/2015] [Accepted: 10/16/2015] [Indexed: 12/15/2022]
Abstract
Male gametogenesis in insects is unusual in that the centrioles do not duplicate during the second meiosis and the differentiating spermatids inherit only one centriole. Here it is showed that a distinct procentriole is assembled close to the proximal region of the centriole in early S13 spermatids at the onion stage, confirming previous reports of a proximal centriole-like structure at the proximal end of the spermatid centriole. However, the procentrioles of Drosophila spermatids do not behave like true procentrioles, but their development is blocked at an early stage before the assembly of a complete A-tubule set. Therefore, they may represent early frozen stages of procentriole assembly that do not develop further and eventually disappear in late spermatids.
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Affiliation(s)
- Marco Gottardo
- Department of Life Sciences, University of Siena, via a. Moro 4, Siena, 53100, Italy
| | - Giuliano Callaini
- Department of Life Sciences, University of Siena, via a. Moro 4, Siena, 53100, Italy
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34
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Khire A, Vizuet AA, Davila E, Avidor-Reiss T. Asterless Reduction during Spermiogenesis Is Regulated by Plk4 and Is Essential for Zygote Development in Drosophila. Curr Biol 2015; 25:2956-63. [PMID: 26480844 DOI: 10.1016/j.cub.2015.09.045] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 08/24/2015] [Accepted: 09/18/2015] [Indexed: 11/17/2022]
Abstract
Centrosome reduction is the decrease in centrosomal components during spermatid differentiation (spermiogenesis). It is one of several dramatic subcellular reorganizations that lead to spermatozoa formation common to a wide range of animals. However, the mechanism underlying centrosome reduction is unknown and its functions are unclear. Here, we show that in Drosophila melanogaster spermiogenesis, the quantity of centrosomal proteins is dramatically reduced; for example, Asterless (Asl) is reduced ∼500-fold and is barely detected in spermatozoa. Asl reduction is regulated through a subset of its domains by the master regulator of centriole duplication Plk4 and by the ubiquitin ligase that targets Plk4 for degradation: Slimb. When Asl reduction is attenuated by Asl overexpression, plk4 mutations, Plk4 RNAi, or Slimb overexpression, Asl levels are higher in spermatozoa, resulting in embryos with reduced viability. Significantly, overexpressing Plk4 and Asl simultaneously, or combining plk4 and slimb mutations, balances their opposing effects on Asl reduction, restoring seemingly normal fertility. This suggests that increased Asl levels cause the observed reduced fertility and not other pleotropic effects. Attenuation of Asl reduction also causes delayed development and a failure to form astral microtubules in the zygote. Together, we provide the first insight into a molecular mechanism that regulates centrosome reduction and the first direct evidence that centrosome reduction is essential for post-fertilization development.
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Affiliation(s)
- Atul Khire
- Department of Biological Sciences, University of Toledo, 2801 W. Bancroft Street, Toledo, OH 43606, USA
| | - Alberto A Vizuet
- Department of Biological Sciences, University of Toledo, 2801 W. Bancroft Street, Toledo, OH 43606, USA
| | - Enrique Davila
- Department of Biological Sciences, University of Toledo, 2801 W. Bancroft Street, Toledo, OH 43606, USA
| | - Tomer Avidor-Reiss
- Department of Biological Sciences, University of Toledo, 2801 W. Bancroft Street, Toledo, OH 43606, USA.
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Avidor-Reiss T, Khire A, Fishman EL, Jo KH. Atypical centrioles during sexual reproduction. Front Cell Dev Biol 2015; 3:21. [PMID: 25883936 PMCID: PMC4381714 DOI: 10.3389/fcell.2015.00021] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Accepted: 03/13/2015] [Indexed: 01/30/2023] Open
Abstract
Centrioles are conserved, self-replicating, microtubule-based, 9-fold symmetric subcellular organelles that are essential for proper cell division and function. Most cells have two centrioles and maintaining this number of centrioles is important for animal development and physiology. However, how animals gain their first two centrioles during reproduction is only partially understood. It is well established that in most animals, the centrioles are contributed to the zygote by the sperm. However, in humans and many animals, the sperm centrioles are modified in their structure and protein composition, or they appear to be missing altogether. In these animals, the origin of the first centrioles is not clear. Here, we review various hypotheses on how centrioles are gained during reproduction and describe specialized functions of the zygotic centrioles. In particular, we discuss a new and atypical centriole found in sperm and zygote, called the proximal centriole-like structure (PCL). We also discuss another type of atypical centriole, the "zombie" centriole, which is degenerated but functional. Together, the presence of centrioles, PCL, and zombie centrioles suggests a universal mechanism of centriole inheritance among animals and new causes of infertility. Since the atypical centrioles of sperm and zygote share similar functions with typical centrioles in somatic cells, they can provide unmatched insight into centriole biology.
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36
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Gottardo M, Callaini G, Riparbelli MG. Procentriole assembly without centriole disengagement - a paradox of male gametogenesis. J Cell Sci 2014; 127:3434-9. [PMID: 24938597 DOI: 10.1242/jcs.152843] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Disengagement of parent centrioles represents the licensing process to restrict centriole duplication exactly once during the cell cycle. However, we provide compelling evidence that this general rule is overridden in insect gametogenesis, when distinct procentrioles are generated during prophase of the first meiosis while parent centrioles are still engaged. Moreover, the number of procentrioles increases during the following meiotic divisions, and up to four procentrioles were found at the base of each mother centriole. However, procentrioles fail to organize a complete set of A-tubules and are thus unable to function as a template for centriole formation. Such a system, in which procentrioles form but halt growth, represents a unique model to analyze the process of cartwheel assembly and procentriole formation.
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Affiliation(s)
- Marco Gottardo
- Department of Life Sciences, University of Siena, Via A. Moro 4, 53100 Siena, Italy
| | - Giuliano Callaini
- Department of Life Sciences, University of Siena, Via A. Moro 4, 53100 Siena, Italy
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