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  • 1
    Keywords: Sea squirts. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (909 pages)
    Edition: 1st ed.
    ISBN: 9780080496597
    Series Statement: Issn Series
    Language: English
    Note: Front Cover -- Methods in Cell Biology -- Copyright Page -- Contents -- Contributors -- Preface -- Dedication -- Chapter 1. The Invertebrate Deuterostomes: An Introduction to Their Phylogeny, Reproduction, Development, and Genomics -- I. Introduction -- II. Phylogeny -- III. Reproduction -- IV. Development -- V. Genomics -- References -- Part I: Procurement, Maintenance & -- Culture of Oocytes, Embryos, Larvae and Adults -- Chapter 2. Care and Maintenance of Adult Echinoderms -- I. Overview -- II. Introduction -- III. Adult Echinoderm Models: Their Reproductive Cycles and Gametogenesis -- IV. Obtaining Adult Echinoderms -- V. Maintenance of Adult Echinoderms in Land-Based Systems -- VI. Care and Handling of Adult Echinoderms -- References -- Chapter 3. Echinoderm Eggs and Embryos: Procurement and Culture -- I. Introduction -- II. Method for Sea Urchins (Class Echinoidea) -- III. Method for Sea Stars (Class Asteroidea) -- IV. Method for Brittle Stars (Class Ophiuroidea, Order Ophiurida) -- V. Method for Sea Cucumbers (Class Holothuroidea) -- VI. Method for Interspecific Crosses -- VII. Summary -- References -- Chapter 4. Culture of Echinoderm Larvae through Metamorphosis -- I. Introduction -- II. Materials for Culturing Algae and Larvae -- III. Establishing Algal Cultures -- IV. Culturing Echinoderm Larvae -- V. Metamorphosis and Beyond -- References -- Chapter 5. Obtaining and Handling Echinoderm Oocytes -- I. Introduction -- II. Experimental Preparation -- III. Methods of Oocyte Collection -- IV. Sea Urchin Oocytes Cultured In Vitro -- V. Labeling of Oocyte Components -- VI. Introduction of Experimental Substances into the Oocytes -- VII. Concluding Remarks/Outlook -- References -- Chapter 6. Procurement and Culture of Ascidian Embryos -- I. Overview -- II. Ascidian Development and Metamorphosis -- III. Larval Tissue Specification. , IV. Experimental Techniques -- V. Protocols -- References -- Chapter 7. Culture of Adult Ascidians and Ascidian Genetics -- I. Overview -- II. Introduction -- III. Culturing Ascidians -- IV. Induced Developmental Mutants and Natural Variants/Mutants -- V. Linkage Analysis and Mapping Genes in Ascidians -- References -- Chapter 8. Hemichordate Embryos: Procurement, Culture, and Basic Methods -- I. Introduction -- II. Procurement, Spawning, and Culture of S. kowalevskii -- III. Procurement, Spawning, and Culture of Ptychodera flava -- IV. Removal of Vitelline Envelope in S. kowalevskii -- V. Whole-Mount In Situ Hybridization -- VI. Preparation of Blocking Reagent for P. flava -- VII. Materials and Reagents -- References -- Chapter 9. Cephalochordate (Amphioxus) Embryos: Procurement, Culture, and Basic Methods -- I. Overview -- II. Introduction -- III. Obtaining Gametes of Branchiostoma floridae -- IV. Raising Embryos -- V. Manipulating Embryos -- VI. Amphioxus Resources Available -- VII. Concluding Remarks -- References -- Part II: Embryological Approaches -- Chapter 10. Quantitative Microinjection of Oocytes, Eggs, and Embryos -- I. Introduction -- II. Methods -- III. Equipment and Supplies (Prices are as of December, 2002) -- References -- Chapter 11. Blastomere Isolation and Transplantation -- I. Introduction -- II. Preparation of Mouth Pipettes and Needles -- III. Removal of Fertilization Envelope of Sea Urchin Eggs -- IV. Isolation and Recombination of Blastomeres in Sea Urchin Embryos -- V. Blastomere Isolation and Transplantation in Starfish Embryos -- VI. Blastomere Isolation and Transplantation in Amphioxus -- VII. Blastomere Isolation and Transplantation in Ascidians -- VIII. Lineage Tracing, Blastomere Isolation, and Transplantation in Hemichordates -- References -- Chapter 12. Isolation and Culture of Micromeres and Primary Mesenchyme Cells. , I. Introduction -- II. Isolation and Culture of Micromeres -- III. Isolation and Culture of Primary Mesenchyme Cells -- References -- Chapter 13. Rapid Microinjection of Fertilized Eggs -- I. Introduction -- II. Equipment -- III. Experimental Protocols -- References -- Chapter 14. Methods for Embryo Dissociation and Analysis of Cell Adhesion -- I. Introduction -- II. Gaining Access to the Egg and Embryo -- III. Cell Adhesion Assays: Nonquantitative and Semiquantitative -- IV. Quantitative Centrifugation Assay -- References -- Part III: Cell Biological Approaches -- Chapter 15. Analysis of Sea Urchin Embryo Gene Expression by Immunocytochemistry -- I. Introduction -- II. Immunocytochemistry on Whole Embryos -- III. Immunostaining Small Numbers of Embryos -- IV. Co-localization -- V. Troubleshooting -- References -- Chapter 16. Light Microscopy of Echinoderm Embryos -- I. Introduction (D. Burgess and L. Strickland) -- II. Formaldehyde Fixation of Cleavage Stage Sea Urchin Embryos -- III. Staining and Imaging Fixed Embryos -- IV. Simultaneous Fixation and Visualization of the Actin and Microtubule Cytoskeletons (G. von Dassow and V. Foe) -- V. Observation of Live Embryos (D. Burgess and L. Strickland) -- VI. 4-D Imaging of Fluorescent Markers in Live Starfish Oocytes ( J. Ellenberg and P. Lenart) -- References -- Chapter 17. TEM and SEM Methods -- I. Introduction -- II. Basic Fixation and Preparation -- III. Embedding Media -- IV. Preservation of Extracellular Matrix -- V. Fixation for SEM -- VI. Quick Freezing and Freeze-Substitution -- VII. Fixation for Immunohistochemistry and Immunocytochemistry -- VIII. Immunogold Methods -- IX. Ultrastructural Immunoperoxidase -- X. Preparation of Colloidal Gold Reagents (Horisberger, 1981 -- Slot and Geuze, 1985) as modified by Campbell (1990) and Reimer (1994) -- References -- Chapter 18. Calcium Imaging. , I. Introduction -- II. Calcium Signals in Embryos -- III. Getting Calcium Sensors into Embryos -- IV. Measuring Emitted Light -- V. Fluorescence Lifetime Imaging -- VI. Calibration -- VII. Manipulating Intracellular Calcium -- VIII. Conclusions and Perspectives -- References -- Chapter 19. Labeling of Cell Membranes and Compartments for Live Cell Fluorescence Microscopy -- I. Introduction -- II. Labeling of Extracellular Space/Endocytosis/Exocytosis -- III. Labeling of Plasma Membrane/Exocytosis/Endosomes -- IV. Labeling of the Cytosol -- V. Yolk Platelets/Reserve Granules -- VI. Mitochondria -- VII. Other Organelles -- VIII. Endoplasmic Reticulum -- IX. Golgi Apparatus -- X. Nucleus -- XI. Microscopy Considerations -- XII. Future Directions -- References -- Chapter 20. Isolation of Organelles and Components from Sea Urchin Eggs and Embryos -- I. Overview -- II. Egg Jelly Molecules Affecting Sperm -- III. Isolation of the Vitelline Layer from Sea Urchin Eggs -- IV. Isolation of the Cell Surface Complex and the Plasma Membrane-Vitelline Layer (PMVL) Complex from Sea Urchin Eggs -- V. The Cytolytic Isolation of the Egg Cortex -- VI. Isolation of Cortical Granules -- VII. Isolation of Yolk Platelets -- VIII. Isolation of Mitochondria from Eggs and Embryos -- IX. Isolation of Plasma Membranes and Lipid Rafts from Eggs and Zygotes -- X. Isolation of Microsomes Containing the Endoplasmic Reticulum -- XI. Nuclear Isolation Procedures -- XII. Removal and Isolation of the Fertilization Envelope -- XIII. Isolation of Cilia from Embryos -- XIV. Isolation of Extracellular Matrices from Embryos and Larvae -- XV. Isolation of Sea Urchin Larval Skeletons -- XVI. Resources for the Isolation of Additional Organelles -- References -- Chapter 21. Sea Urchin Spermatozoa -- I. Introduction -- II. Obtaining Sperm and Removing Coelomocytes. , III. Isolating Sperm Heads, Flagella, and Chromatin -- IV. The Isolated Sperm Flagellum as a Sealed Compartment -- V. Extracting Intact Sperm or Isolated Flagella and Heads with Detergents -- VI. Wheat Germ Agglutinin (WGA) Affinity Chromatography of Sperm Membrane Proteins -- VII. Isolating Sperm Plasma Membranes -- VIII. Isolation of Acrosome Reaction Vesicle Membranes (ARV) -- IX. Isolating Lipid Rafts from Sperm -- X. Scoring the Acrosome Reaction by Phase Contrast Microscopy -- XI. Sea Urchin Sperm Bindin -- References -- Chapter 22. Measuring Ion Fluxes in Sperm -- I. Overview -- II. Introduction -- III. Sperm Physiology is Deeply Influenced by Ion Channels and Transporters -- IV. Strategies to Study Sperm Ion Channels and Transporters -- References -- Part IV: Molecular Biological Approaches -- Chapter 23. Isolating DNA, RNA, Polysomes, and Protein -- I. Overview -- II. Introduction -- III. Purification of Total RNA -- IV. Purification of Cytoplasmic and Polysomal RNA -- V. Purification of Genomic DNA -- VI. Preparation of Protein Samples for One- and Two-Dimensional Gel Electrophoresis -- References -- Chapter 24. Detection of mRNA by In Situ Hybridization and RT-PCR -- I. Introduction -- II. In Situ Hybridization -- III. Quantitative PCR -- References -- Chapter 25. Using Reporter Genes to Study cis-Regulatory Elements -- Overview -- I. Introduction -- II. Using Chloramphenicol Acetyltransferase (CAT) Reporter Gene -- III. Using Green Fluorescent Protein (GFP) Reporter Gene -- IV. Quantitative Imaging of GFP in Living Embryos -- V. Using Luciferase (luc) Reporter Gene -- VI. Using lacZ Reporter Gene -- VII. Summary, Prospects, Concluding Remarks -- References -- Chapter 26. Identification of Sequence-Specific DNA Binding Proteins -- Overview -- I. Introduction -- II. Preparation of Nuclear Extracts. , III. Identification of Transcription Factor Target Sites by Footprint and Electrophoretic Mobility Shift Analysis (EMSA).
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  • 2
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Molecular Reproduction and Development 28 (1991), S. 111-118 
    ISSN: 1040-452X
    Keywords: Ubiquitin ; Heat shock ; mRNA stability ; Unequal cross over ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: A cloned Lytechinus pictus cDNA has been identified, which includes seven direct repeats of a 228 bp sequence encoding ubiquitin and about 450 bp of 3′ noncoding sequence. The deduced amino acid sequence is identical to that of ubiquitins of other animals (though repeats 3 and 5 each have single amino acid substitutions at different positions). Southern blot analysis revealed that the sea urchin genome contains a single copy of the polyubiquitin gene, and the number of 228 bp repeat units appears to vary from seven to ten among different alleles; no other ubiquitin coding sequences were detected. The size distribution of polyubiquitin mRNA is polymorphic among different individuals, probably corresponding to the differences in copy number of the repetitive coding sequence. The abundance of cytoplasmic polyubiquitin RNA is constant throughout embryogenesis and is similar in ectoderm, endoderm, and mesoderm cells. The constant prevalence of polyubiquitin mRNA apparently results from a balance between ontogenetic changes in its rate of synthesis and its stability in the presence of actinomycin D. Accumulation of polyubiquitin RNA was not heat shock-inducible during embryogenesis.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Gamete Research 18 (1987), S. 339-348 
    ISSN: 0148-7280
    Keywords: B-1,3-glucanase ; cortical granules ; hyaline layer ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The ultrastructural localization of B-1,3-glucanase in three species of sea urchin eggs was determined using a monospecific antibody in an electronmicroscopic immunogold procedure. In all three species, Lytechinus variegatus, Strongylocentrotus purpuratus, and Arbacia punctulata, B-1,3-glucanase was localized specifically to the cortical granules. No other organelle within the egg contained significant label. During the fertilization reaction, B-1,3-glucanase was released from cortical granules into the perivitelline space and became associated with the hyaline layer. No significant label was found in association with the fertilization envelope.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Publication Date: 2024-02-07
    Description: Organisms living on the seafloor are subject to encrustations by a wide variety of animals, plants and microbes. Sea urchins, however, thwart this covering. Despite having a sophisticated immune system, there is no clear molecular mechanism that allows sea urchins to remain free of epibiotic microorganisms. Here, we test the hypothesis that pigmentation biosynthesis in sea urchin spines influences their interactions with microbes in vivo using CRISPR/Cas9. We report three primary findings. First, the microbiome of sea urchin spines is species-specific and much of this community is lost in captivity. Second, different colour morphs associate with bacterial communities that are similar in taxonomic composition, diversity and evenness. Lastly, loss of the pigmentation biosynthesis genes polyketide synthase and flavin-dependent monooxygenase induces a shift in which bacterial taxa colonize sea urchin spines. Therefore, our results are consistent with the hypothesis that host pigmentation biosynthesis can, but may not always, influence the microbiome in sea urchin spines.
    Type: Article , PeerReviewed , info:eu-repo/semantics/article
    Format: text
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