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Coupling between Clathrin-Coated-Pit Invagination, Cortactin Recruitment, and Membrane Scission Observed in Live Cells
Open accessAbstract
During clathrin-mediated endocytosis, membrane scission marks the isolation of a cargo-laden clathrin-coated pit (CCP) from the cell exterior. Here we used live-cell imaging of a pH-sensitive cargo to visualize the formation of clathrin-coated vesicles (CCVs) at single CCPs with a time resolution of seconds. We show that CCPs are highly dynamic and can produce multiple vesicles in succession. Using alternating evanescent field and epifluorescence illumination, we show that CCP invagination and scission are tightly coupled, with scission coinciding with maximal displacement of CCPs from the plasma membrane and with peak recruitment of cortactin-DsRed, a dynamin and F-actin binding protein. Finally, perturbing actin polymerization with latrunculin-B drastically reduces the efficiency of membrane scission and affects many aspects of CCP dynamics. We propose that CCP invagination, actin polymerization, and CCV formation are highly coordinated for efficient endocytosis.
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“Endocytosis typically requires force generation by active actin polymerization at the maturing endocytic pit52–57.”
From Membrane compression by synaptic vesicle exocytosis triggers ultrafast endocytosis (2023) · cites this paper as [56]
In the citing paper
“Together, these data strongly suggest that the observed heterogeneity in the dynamic behavior of CCPs (Merrifield et al., 2005; Rappoport et al., 2005; Yarar et al., 2005) could reflect differences in their content of cargo and adaptor molecules.”
From Cargo- and adaptor-specific mechanisms regulate clathrin-mediated endocytosis (2010) · cites this paper as Merrifield et al., 2005
In the citing paper
“This idea is further supported by the observation that nonterminal events are more frequent in HeLa cells (Ehrlich et al., 2004; Merrifield et al., 2005; Loerke et al., 2009), which express relatively high levels of Dab2 and cargo (Maurer and Cooper, 2006; unpublished data).”
From Cargo- and adaptor-specific mechanisms regulate clathrin-mediated endocytosis (2010) · cites this paper as Merrifield et al., 2005
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Membrane curvature and mechanisms of dynamic cell membrane remodelling
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BackgroundMechanisms of clathrin-mediated endocytosis
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Background
Metadata
- Authors
- Merrifield, C. J., Perrais, D., & Zenisek, D.
- Affiliations
- MRC Laboratory of Molecular Biology (GB)
- Centre National de la Recherche Scientifique (FR)
- Yale University (US)
- Corresponding author
- Merrifield, Christien J.
- Venue
- Cell
- Publisher
- Elsevier BV
- Published
- 2005-05
- Volume
- 121
- Issue
- 4
- Pages
- 593-606
- ISSN
- 0092-8674 (ISSN-L)
- OpenAlex
- W2001532503
- Cited by
- 476
- References
- 0
- Citations by year
- 2026: 3 · 2025: 6 · 2024: 6 · 2023: 14 · 2022: 15 · 2021: 10 · 2020: 9 · 2019: 11 · 2018: 18 · 2017: 17 · 2016: 13 · 2015: 21 · 2014: 36 · 2013: 12 · 2012: 34
- FWCI
- 16.53
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Cell (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Caveolin-1 and cellular processes
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
- Keywords
- clathrin-mediated endocytosis, membrane fission, clathrin-coated vesicles, cortactin, actin polymerization, latrunculin B, vesicle formation, dynamin, F-actin
- MeSH terms
- Actins, Animals, Cell Membrane, Coated Pits, Cell-Membrane, Endocytosis, Microfilament Proteins, Microscopy, Fluorescence, Polymers, Thiazoles, Microscopy, Video, Bridged Bicyclo Compounds, Heterocyclic, Clathrin-Coated Vesicles, Swiss 3T3 Cells, Cortactin, Mice, Thiazolidines
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