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Chinese Physics, 2004, Vol. 13(7): 1171-1176    DOI: 10.1088/1009-1963/13/7/037
CROSS DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY Prev   Next  

A nonequilibrium phase transition in immune response

 Zhang Wei (张伟)a, Qi An-Shen (漆安慎)b
a Department of System Science, Beijing Normal University, Beijing 100875, China; b Department of Physics, Beijing Normal University, Beijing 100875, China
Abstract  The dynamics of immune response correlated to signal transduction in immune thymic cells (T cells) is studied. In particular, the problem of the phosphorylation of the immune-receptor tyrosine-based activation motifs (ITAM) is explored. A nonlinear model is established on the basis of experimental observations. The behaviours of the model can be well analysed using the concepts of nonequilibrium phase transitions. In addition, the Riemann-Hugoniot cusp catastrophe is demonstrated by the model. Due to the application of the theory of nonequilibrium phase transitions, the biological phenomena can be clarified more precisely. The results can also be used to further explain the signal transduction and signal discrimination of an important type of immune T cell.
Keywords:  nonequilibrium phase transitions      ITAM      cusp catastrophe  
Received:  11 December 2003      Revised:  04 March 2004      Accepted manuscript online: 
PACS:  64.60.-i (General studies of phase transitions)  
  87.17.Aa (Modeling, computer simulation of cell processes)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No 30070216).

Cite this article: 

Zhang Wei (张伟), Qi An-Shen (漆安慎) A nonequilibrium phase transition in immune response 2004 Chinese Physics 13 1171

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