Cited by 750Marine Sponges and Natural ProductsToxin Mechanisms and ImmunotoxinsSynthesis and Biological Activity

Latrunculins: Novel Marine Toxins That Disrupt Microfilament Organization in Cultured Cells

Spector, Ilan, Shochet, Nava R., Kashman, Yoel, Groweiss, Amiram·1983·Science

Abstract

Two toxins, latrunculins A and B, which contain a new class of 16- and 14-membered marine macrolides attached to the rare 2-thiazolidinone moiety, were purified recently from the Red Sea sponge Latrunculia magnifica. The effects of these toxins on cultured mouse neuroblastoma and fibroblast cells have been evaluated. In both types of cells, submicromolar toxin concentrations rapidly induce striking changes in cell morphology that are reversible upon removal of the toxin. Immunofluorescence studies with antibodies specific for cytoskeletal proteins reveal that the toxins cause major alterations in the organization of microfilaments without obvious effects on the organization of the microtubular system.

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Registry

Crossref · 10.1126/science.6681676

Cites

21 of 21 references verified0 citation errors · 0 not checkable

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  • Latrunculin A treatment completely blocks ultrafast endocytosis, with no induction of membrane pit formation.

    “When neurons are treated with Latrunculin A, which sequesters monomeric actin (G-actin) and perturbs F-actin formation12,13, ultrafast endocytosis fails completely, with no induction of membrane pit formation5.”

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Authors
Spector, I., Shochet, N. R., Kashman, Y., & Groweiss, A.
Affiliations
  • National Institutes of Health (US)
  • Tel Aviv University (IL)
Venue
Science
Published
1983-02-04
Volume
219
Issue
4584
Pages
493-495
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W1984653721
Cited by
750
References
21
Citations by year
2026: 18 · 2025: 22 · 2024: 16 · 2023: 21 · 2022: 16 · 2021: 19 · 2020: 31 · 2019: 21 · 2018: 19 · 2017: 16 · 2016: 19 · 2015: 28 · 2014: 33 · 2013: 31 · 2012: 29
FWCI
5.40
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biotechnology › Marine Sponges and Natural Products
  • Life Sciences › Immunology and Microbiology › Immunology › Toxin Mechanisms and Immunotoxins
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Synthesis and Biological Activity
Keywords
latrunculin, latrunculin A, latrunculin B, marine toxins, marine sponges, microfilament organization, actin cytoskeleton, macrolides, neuroblastoma cells, fibroblasts, cell morphology, microtubules
MeSH terms
Actins, Animals, Cells, Cultured, Cytoskeleton, Fibroblasts, Marine Toxins, Microscopy, Fluorescence, Microtubules, Neuroblastoma, Thiazoles, Bridged Bicyclo Compounds, Heterocyclic, Thiazolidines

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