Actin Polymerisation at the Nuclear Envelope
Author Information
Author(s): Münter Sylvia, Enninga Jost, Vazquez-Martinez Rafael, Delbarre Erwan, David-Watine Brigitte, Nehrbass Ulf, Shorte Spencer L
Primary Institution: Institut Pasteur
Hypothesis
Can cytoplasmic actin polymerise at the nuclear envelope in living cells?
Conclusion
Actin polymerisation occurs around interphase nuclei of living cells at the cytoplasmic phase of nuclear envelope membranes.
Supporting Evidence
- Actin was observed to accumulate at the nuclear envelope in living cells.
- Microinjection of fluorescent actin showed a ring pattern around cell nuclei.
- Fluorescent probes indicated that actin polymerisation occurs at the cytoplasmic face of the nuclear envelope.
Takeaway
This study shows that actin, a protein that helps cells maintain their shape, gathers around the outside of the nucleus in living cells.
Methodology
Fluorescent probes and confocal microscopy were used to visualize actin polymerisation near the nuclear envelope in living cells.
Limitations
The study primarily focused on HeLa cells, which may not represent all cell types.
Participant Demographics
HeLa cells and isolated rat liver nuclei were used in the experiments.
Statistical Information
P-Value
p<0.01
Statistical Significance
p<0.01
Digital Object Identifier (DOI)
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