Discovery of gene regulatory networks in aspergillus fumigatus

作者: Reinhard Guthke , Olaf Kniemeyer , Daniela Albrecht , Axel A. Brakhage , Ulrich Möller

DOI: 10.1007/978-3-540-71037-0_3

关键词: Data monitoringGene expressionMicroarray analysis techniquesAspergillus fumigatusFight-or-flight responseHeat shock proteinGeneBioinformaticsComputational biologyBiologyGene regulatory network

摘要: Aspergillus fumigatus is the most important airborne fungal pathogen causing life-threatening infections in immuno suppressed patients. During infection process, A. has to cope with a dramatic change of environmental conditions, such as temperature shifts. Recently, gene expression data monitoring stress response shift from 30°C 48°C was published. In present work, these were analyzed by reverse engineering discover regulatory mechanisms resistance fumigatus. Time series data, i.e. profiles 1926 differentially expressed genes, clustered fuzzy c-means. The number clusters optimized using set optimization criteria. From each cluster representative selected text mining descriptions and evaluating ontology terms. genes simulated differential equation system, whose structure parameters minimizing both non-vanishing mean square error model fit microarray data.

参考文章(21)
James C. Bezdek, Richard J. Hathaway, Yingkang Hu, Local convergence of tri-level alternating optimization Neural, Parallel & Scientific Computations archive. ,vol. 9, pp. 19- 28 ,(2001) , 10.5555/543517.543519
James C. Bezdek, Sankar K. Pal, Fuzzy models for pattern recognition : methods that search for structures in data Institute of Electrical and Electronics Engineers. ,(1992)
N. Bolshakova, F. Azuaje, Cluster validation techniques for genome expression data Signal Processing. ,vol. 83, pp. 825- 833 ,(2003) , 10.1016/S0165-1684(02)00475-9
Beney L., Gervais P., Influence of the fluidity of the membrane on the response of microorganisms to environmental stresses. Applied Microbiology and Biotechnology. ,vol. 57, pp. 34- 42 ,(2001) , 10.1007/S002530100754
R. Bhabhra, D. S. Askew, Thermotolerance and virulence of Aspergillus fumigatus: role of the fungal nucleolus. Medical Mycology. ,vol. 43, pp. 87- 93 ,(2005) , 10.1080/13693780400029486
C. Dahl, H. P. Biemann, J. Dahl, A protein kinase antigenically related to pp60v-src possibly involved in yeast cell cycle control: positive in vivo regulation by sterol Proceedings of the National Academy of Sciences of the United States of America. ,vol. 84, pp. 4012- 4016 ,(1987) , 10.1073/PNAS.84.12.4012
E. Mellado, G. Garcia-Effron, M. J. Buitrago, L. Alcazar-Fuoli, M. Cuenca-Estrella, J. L. Rodriguez-Tudela, Targeted Gene Disruption of the 14-α Sterol Demethylase (cyp51A) in Aspergillus fumigatus and Its Role in Azole Drug Susceptibility Antimicrobial Agents and Chemotherapy. ,vol. 49, pp. 2536- 2538 ,(2005) , 10.1128/AAC.49.6.2536-2538.2005
Tracey M Swan, Kenneth Watson, Stress tolerance in a yeast sterol auxotroph: role of ergosterol, heat shock proteins and trehalose. Fems Microbiology Letters. ,vol. 169, pp. 191- 197 ,(1998) , 10.1111/J.1574-6968.1998.TB13317.X