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Systems biology of the cell cycle of Saccharomyces cerevisiae: From network mining to system-level properties
- Source :
-
Biotechnology Advances . Nov2009, Vol. 27 Issue 6, p960-978. 19p. - Publication Year :
- 2009
-
Abstract
- Abstract: Following a brief description of the operational procedures of systems biology (SB), the cell cycle of budding yeast is discussed as a successful example of a top-down SB analysis. After the reconstruction of the steps that have led to the identification of a sizer plus timer network in the G1 to S transition, it is shown that basic functions of the cell cycle (the setting of the critical cell size and the accuracy of DNA replication) are system-level properties, detected only by integrating molecular analysis with modelling and simulation of their underlying networks. A detailed network structure of a second relevant regulatory step of the cell cycle, the exit from mitosis, derived from extensive data mining, is constructed and discussed. To reach a quantitative understanding of how nutrients control, through signalling, metabolism and transcription, cell growth and cycle is a very relevant aim of SB. Since we know that about 900 gene products are required for cell cycle execution and control in budding yeast, it is quite clear that a purely systematic approach would require too much time. Therefore lines for a modular SB approach, which prioritises molecular and computational investigations for faster cell cycle understanding, are proposed. The relevance of the insight coming from the cell cycle SB studies in developing a new framework for tackling very complex biological processes, such as cancer and aging, is discussed. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 07349750
- Volume :
- 27
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Biotechnology Advances
- Publication Type :
- Academic Journal
- Accession number :
- 44582563
- Full Text :
- https://doi.org/10.1016/j.biotechadv.2009.05.021