– Niels Bohr Institutet - Københavns Universitet

Modeling oscillatory control in NF-¿B, p53 and Wnt signaling

Research output: Contribution to journalJournal article

Benedicte Mengel, Alexander Hunziker, Lykke Pedersen, Ala Trusina, Mogens H Jensen, Sandeep Krishna

Oscillations are commonly observed in cellular behavior and span a wide range of timescales, from seconds in calcium signaling to 24 hours in circadian rhythms. In between lie oscillations with time periods of 1-5 hours seen in NF-¿B, p53 and Wnt signaling, which play key roles in the immune system, cell growth/death and embryo development, respectively. In the first part of this article, we provide a brief overview of simple deterministic models of oscillations. In particular, we explain the mechanism of saturated degradation that has been used to model oscillations in the NF-¿B, p53 and Wnt systems. The second part deals with the potential physiological role of oscillations. We use the simple models described earlier to explore whether oscillatory signals can encode more information than steady-state signals. We then discuss a few simple genetic circuits that could decode information stored in the average, amplitude or frequency of oscillations. The presence of frequency-detector circuit downstream of NF-¿B or p53 would be a strong clue that oscillations are important for the physiological response of these signaling systems.
Original languageEnglish
JournalCurrent Opinion in Genetics & Development
Issue number6
Pages (from-to)656-64
Number of pages9
StatePublished - 1 Dec 2010

    Research areas

  • Animals, Circadian Rhythm, Humans, Models, Biological, NF-kappa B, Signal Transduction, Tumor Suppressor Protein p53, Wnt Proteins

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