Fibroblast Fusion
Fibroblast Fusion - Related Videos
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...
15:43
Experimental Generation of Carcinoma-Associated Fibroblasts (CAFs) from Human Mammary Fibroblasts
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Cited by 25 •
2011
Carcinoma-associated fibroblasts (CAFs) rich in myofibroblasts present within the tumour stroma, play a major role in driving tumour progression. We developed a coimplantation tumour xengraft model for experimentally generating CAFs from human mammary fibroblasts. The protocol describes how to establish CAF myofibroblasts that acquire an ability to promote tumourigenesis.
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.
05:54
Rapid Culturing of Primary Murine Melanocytes and Fibroblasts: Isolating Melanocytes and Fibroblasts from Whole Murine Skin Sample
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2023
This video describes the rapid method to isolate and culture the melanocytes and fibroblast simultaneously from the postnatal mouse pup’s skin. These cells can be maintained and manipulated in vitro to study skin cell biology, wound healing, and melanoma.
06:04
Murine Dermal Fibroblast Isolation by FACS
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Cited by 28 •
2016
Fibroblast behavior underlies a spectrum of clinical entities, but they remain poorly characterized, largely due to their inherent heterogeneity. Traditional fibroblast research relies upon in vitro manipulation, masking in vivo fibroblast behavior. We describe a FACS-based protocol for the isolation of mouse skin fibroblasts that does not require cell culture.
FAQs
Fusion proceeds through several linked membrane events rather than an immediate nuclear merger. The opposing plasma membranes are brought into close contact, their lipid bilayers merge, and cytoplasmic contents become continuous. The resulting cell can temporarily contain separate nuclei, allowing investigators to examine cytoplasmic exchange and nuclear interactions before any later combining of nuclear material.
Fibroblast heterokaryons preserve multiple nuclei within a shared cytoplasm, creating a system for testing how nuclear genomes influence one another. Researchers can compare the behavior of genetically different nuclei in the same cellular environment and examine complementation between mutant genomes. This helps distinguish effects associated with gene function, nuclear interactions, and shared cytoplasmic factors.
Experimentally induced fusion may use an agent such as polyethylene glycol to promote joining of fibroblasts. Physiological fusogenic mechanisms instead rely on biological processes that bring plasma membranes together and support bilayer merging. Both routes produce a shared cytoplasm, but comparing them helps researchers consider how the trigger for membrane fusion may influence subsequent nuclear behavior and cellular responses.
The interval between cytoplasmic mixing and nuclear combination provides an informative experimental window. Separate nuclei in a common cytoplasm allow researchers to study nuclear interactions before the cell becomes genetically more unified. Observing these stages can clarify chromosome behavior, changes in gene regulation, and the cellular factors associated with transitions in nuclear state.
Researchers can place genetically distinct fibroblast nuclei in one fused cell and assess whether a defect associated with one mutant genome is compensated by information from the other. Recovery or alteration of cellular behavior can indicate complementation, while continued dysfunction may suggest that the relevant genetic functions are not supplied effectively. This approach links cell fusion with functional genome analysis.
Beyond complementation, fused fibroblast systems support investigations of chromosome behavior, gene regulation, and factors that control cellular reprogramming. These questions make the models relevant to genetics and cell biology while also connecting them with disease mechanisms and regenerative research. Their value comes from relating changes in nuclear identity and genome function to behavior in a shared cellular environment.