dorsal/arxiv
View SchemaSpiky oscillations in NF-kB signalling
| Authors | Sandeep Krishna, Mogens H. Jensen, Kim Sneppen |
|---|---|
| Categories | |
| ArXiv ID | q-bio/0509017 |
| URL | https://arxiv.org/abs/q-bio/0509017 |
| DOI | 10.1073/pnas.0604085103 |
| Journal | PNAS 2006 103: 10840-10845 |
Abstract
The NF-kB signalling system is involved in a variety of cellular processes including immune response, inflammation, and apoptosis. Recent experiments have found oscillations in the nuclear-cytoplasmic translocation of the NF-kB transcription factor. How the cell uses the oscillations to differentiate input conditions and send specific signals to downstream genes is an open problem. We shed light on this issue by examining the small core network driving the oscillations, which, we show, is designed to produce periodic spikes in nuclear NF-kB concentration. The oscillations can be used to regulate downstream genes in a variety of ways. In particular, we show that genes to whose operator sites NF-kB binds and dissociates fast can respond very sensitively to changes in the input signal, with effective Hill coefficients in excess of 20.
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"abstract": "The NF-kB signalling system is involved in a variety of cellular processes\nincluding immune response, inflammation, and apoptosis. Recent experiments have\nfound oscillations in the nuclear-cytoplasmic translocation of the NF-kB\ntranscription factor. How the cell uses the oscillations to differentiate input\nconditions and send specific signals to downstream genes is an open problem. We\nshed light on this issue by examining the small core network driving the\noscillations, which, we show, is designed to produce periodic spikes in nuclear\nNF-kB concentration. The oscillations can be used to regulate downstream genes\nin a variety of ways. In particular, we show that genes to whose operator sites\nNF-kB binds and dissociates fast can respond very sensitively to changes in the\ninput signal, with effective Hill coefficients in excess of 20.",
"arxiv_id": "q-bio/0509017",
"authors": [
"Sandeep Krishna",
"Mogens H. Jensen",
"Kim Sneppen"
],
"categories": [
"q-bio.MN",
"cond-mat.other",
"q-bio.OT"
],
"doi": "10.1073/pnas.0604085103",
"journal_ref": "PNAS 2006 103: 10840-10845",
"title": "Spiky oscillations in NF-kB signalling",
"url": "https://arxiv.org/abs/q-bio/0509017"
},
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