Cell Fusion
Cell Fusion - Related Videos
09:19
Analysis of SNARE-mediated Membrane Fusion Using an Enzymatic Cell Fusion Assay
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2012
We have developed a cell fusion assay that quantifies SNARE-mediated membrane fusion events by activated expression of β-galactosidase.
02:45
Nuclear Fusion
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2020
The process of converting very light nuclei into heavier nuclei is also accompanied by the conversion of mass into large amounts of energy, a process called fusion. The principal source of energy in the sun is a net fusion reaction in which four hydrogen nuclei fuse and ultimately produce one helium nucleus and two positrons. A helium nucleus has a mass that is 0.7% less than that of four hydrogen nuclei; this lost mass is converted into energy during the fusion. This reaction produces about...
02:38
An Assay to Evaluate the Effect of Test Compounds on Viral Entry and Fusion in Host Cells
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2025
This video demonstrates an assay to evaluate antiviral agents that target specific steps of the viral entry into host cells and fusion with the endosome. The cells are incubated at a low temperature and then infected with HCV. The low temperature permits viral binding to host cells but inhibits internalization via endocytosis. The test antiviral compound is added, and the cells are incubated at physiological temperature. This shift to a higher temperature facilitates viral entry and allows...
08:13
A Cre-Lox P Recombination Approach for the Detection of Cell Fusion In Vivo
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Cited by 11 •
2012
A method to track cell fusion in living organisms over time is described. The approach utilizes Cre-LoxP recombination to induce luciferase expression upon cell fusion. The luminescent signal generated can be detected in living organisms using biophotonic imaging systems with a sensitivity of detection of ˜1,000 cells in peripheral tissues.
06:14
Assessment of Mitochondrial Fission/Fusion Dynamics in Kidney Proximal Tubular Cells
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2025
This article describes the use of confocal microscopy and ImageJ to assess mitochondrial fission/fusion dynamics via Dendra2 photo-switching fluorescence.
FAQs
Cell fusion proceeds through a sequence rather than an instantaneous content mixture. Compatible cell surfaces first recognize and adhere to one another. Membrane remodeling then brings the lipid bilayers into a configuration that permits merging, after which the cells share cytoplasm. This sequence explains why surface compatibility and membrane behavior are central determinants of whether fusion can proceed.
No. The plasma membranes can merge and establish shared cytoplasm without the nuclei joining, so the resulting structure may remain multinucleated. In other cases, nuclear fusion occurs after membrane fusion and produces a single cellular entity with combined nuclear material. This distinction helps biologists separate membrane-level fusion from later nuclear events when interpreting developmental or experimental outcomes.
Surface recognition and adhesion act as a compatibility checkpoint. Cells must identify and attach to an appropriate partner before membrane remodeling and lipid-bilayer merging can occur. If this early interaction does not establish a suitable contact, shared cytoplasm cannot form through the described sequence. Studying this stage therefore links cell-surface behavior to larger developmental and tissue-level outcomes.
Cell fusion can produce either a single cell or a multinucleated syncytium, depending partly on what happens after the plasma membranes merge. A syncytium retains multiple nuclei within shared cytoplasm, whereas nuclear fusion can follow and alter the final organization. This distinction is useful when comparing biological settings such as muscle formation with experimental systems designed to create hybrid cells.
Cell fusion contributes to several major biological events, including fertilization, muscle formation, placental development, and tissue repair. These examples show that fusion is not limited to one developmental stage or tissue type. In each context, membrane merger and shared cytoplasm can support the formation, organization, or restoration of multicellular structures, making fusion relevant to both development and regeneration.
Researchers exploit the process to generate hybridomas for antibody production and to study cell reprogramming. They also investigate membrane dynamics to understand development and disease, while regenerative-medicine studies examine its relevance to tissue repair. These applications connect a membrane-level event with practical laboratory tools and broader questions about how cells change identity, interact, and contribute to tissue outcomes.