Stochastic mRNA Synthesis in Mammalian Cells
2006
Chance Fluctuations in mRNA Output in Mammalian Cells
publication
Evidence: moderate
Author Information
Author(s): Arjun Raj, Françoise Chanut
Hypothesis
Can intrinsic fluctuations in gene expression significantly affect mRNA output in mammalian cells?
Conclusion
The study shows that mRNA production in mammalian cells occurs in random bursts, influenced by the genes' ability to switch between active and inactive states.
Supporting Evidence
- The study found that mRNA production occurs in infrequent bursts in CHO cells.
- Cells with the same genetic makeup showed extreme variations in mRNA expression levels.
- Reducing transcription factor availability did not significantly increase burst frequency.
Takeaway
Sometimes, cells make more or less of a protein randomly, and this study found that in mammal cells, this randomness happens in bursts.
Methodology
The researchers used a sensitive technology to detect mRNAs in single CHO cells and examined the output of a genetically engineered reporter gene.
Participant Demographics
Chinese hamster ovary (CHO) cells were used in the study.
Digital Object Identifier (DOI)
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