Asymmetrical Distribution of Transcriptionally Competent NORs in Mitosis
Author Information
Author(s): Markéta Kalmárová, Lubomír Kováčik, Alexey Popov, Pilar Testillano Sánchez, Evgeny Smirnov
Primary Institution: Institute of Cellular Biology and Pathology, First Faculty of Medicine, Charles University in Prague
Hypothesis
Is the stable state of competent NORs achieved by equal distribution during cell division?
Conclusion
The study found a small but significant asymmetry in the distribution of transcriptionally competent NORs between daughter cells during mitosis.
Supporting Evidence
- Competent NORs were found to be asymmetrically distributed between daughter cells.
- The average number of competent NORs per cell remained stable in cycling cell populations.
- Asymmetry in NOR distribution was observed at the beginning of anaphase.
Takeaway
When cells divide, they sometimes end up with different amounts of important parts called NORs, which help make proteins.
Methodology
The study used immunocytochemistry and 4D imaging to observe NORs in HeLa and LEP cells during mitosis.
Limitations
The study primarily focused on two cell lines, which may limit the generalizability of the findings.
Participant Demographics
The study involved HeLa cells (aneuploid) and LEP cells (human diploid fibroblasts).
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website