期刊
PLOS ONE
卷 4, 期 3, 页码 -出版社
PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0004872
关键词
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资金
- Federal Ministry of Education and Research [0313924]
- VW-foundation
- CESCA-CEPBA through European ACCESS programm
- Ministerio de Educacion y Ciencia Spain [FIS2006-11452]
- European Commission (GABA project)
- Ministerio de Ciencia e Innovacion (Spain)
- EU through the Network of Excellence BioSim [LSHB-CT-2004-005137]
Many cellular processes require decision making mechanisms, which must act reliably even in the unavoidable presence of substantial amounts of noise. However, the multistable genetic switches that underlie most decision-making processes are dominated by fluctuations that can induce random jumps between alternative cellular states. Here we show, via theoretical modeling of a population of noise-driven bistable genetic switches, that reliable timing of decision-making processes can be accomplished for large enough population sizes, as long as cells are globally coupled by chemical means. In the light of these results, we conjecture that cell proliferation, in the presence of cell-cell communication, could provide a mechanism for reliable decision making in the presence of noise, by triggering cellular transitions only when the whole cell population reaches a certain size. In other words, the summation performed by the cell population would average out the noise and reduce its detrimental impact.
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