Lu, Baoyun and Yue, Hong (2010) Analyzing robustness of NF-kappaB signaling transduction networks via bifurcation analysis. Systemics and Informatics World Network, 10. pp. 37-47. ISSN 2044-7272Full text not available in this repository. (Request a copy from the Strathclyde author)
Robustness is a widely observed and important property of biological systems. The nuclear factor-kB (NF-kB) signaling pathway is an important cellular signaling pathway that is involved in a variety of cellular processes including immune response, inflammation, and apoptosis. Oscillation is a common phenomenon in complex biological systems and it plays key roles in many cellular processes. Upon stimulation of TNFa, damped oscillations of NF-kB activity have been observed both experimentally and computationally in previous works. Bifurcation analysis has proven to be a powerful tool to identify the presence of complex behavior of dynamic systems. Based on a mathematical model of the TNFa mediated IkB-NF-kB signaling transduction pathway and also a simplified IkBα-NF-kB computational model with IkBβ and IkBε knock out, bifurcation analysis is performed to investigate the mechanism of biological robustness of the NF-kB signaling transduction pathway. In particular, we focused on the periodic solutions emerged via Hopf bifurcations and identified the parameter regions in which a stable periodic solution exists. Numerical study results confirm that IkBa is the key inhibitor of the NF-kB network and the cellular system has retained robustness even when some components are knocked out.
|Keywords:||robustness, bifurcation analysis, limit cycle oscillation, NF-kB signaling transduction pathway, Electrical engineering. Electronics Nuclear engineering|
|Subjects:||Technology > Electrical engineering. Electronics Nuclear engineering|
|Department:||Faculty of Engineering > Electronic and Electrical Engineering|
|Depositing user:||Pure Administrator|
|Date Deposited:||26 Oct 2011 15:53|
|Last modified:||23 Nov 2016 09:18|