title: CytoSVM: an advanced server for identification of cytokine-receptor interactions.
abstract: The interactions between cytokines and their complementary receptors are the gateways to properly understand a large variety of cytokine-specific cellular activities such as immunological responses and cell differentiation. To discover novel cytokine-receptor interactions, an advanced support vector machines (SVMs) model, CytoSVM, was constructed in this study. This model was iteratively trained using 449 mammal (except rat) cytokine-receptor interactions and about 1 million virtually generated positive and negative vectors in an enriched way. Final independent evaluation by rat's data received sensitivity of 97.4%, specificity of 99.2% and the Matthews correlation coefficient (MCC) of 0.89. This performance is better than normal SVM-based models. Upon this well-optimized model, a web-based server was created to accept primary protein sequence and present its probabilities to interact with one or several cytokines. Moreover, this model was applied to identify putative cytokine-receptor pairs in the whole genomes of human and mouse. Excluding currently known cytokine-receptor interactions, total 1609 novel cytokine-receptor pairs were discovered from human genome with probability approximately 80% after further transmembrane analysis. These cover 220 novel receptors (excluding their isoforms) for 126 human cytokines. The screening results have been deposited in a database. Both the server and the database can be freely accessed at http://bioinf.xmu.edu.cn/software/cytosvm/cytosvm.php.
authors.affiliation: Key Laboratory for Cell Biology & Tumor Cell Engineering, the Ministry of Education of China, School of Life Sciences, Xiamen University, Xiamen 361005, FuJian Province, PR China.
authors.forename: Jin-Rui
authors.initials: JR
authors.lastname: Xu
authors.forename: Jing-Xian
authors.initials: JX
authors.lastname: Zhang
authors.forename: Bu-Cong
authors.initials: BC
authors.lastname: Han
authors.forename: Liang
authors.initials: L
authors.lastname: Liang
authors.forename: Zhi-Liang
authors.initials: ZL
authors.lastname: Ji
mesh_terms: D000465:Algorithms; D000818:Animals; D001185:Artificial Intelligence; D019295:Computational Biology / Q000379:methods*; D016207:Cytokines / Q000737:chemistry* / Q000145:classification; D030562:Databases, Protein; D004151:Dipeptides / Q000737:chemistry*; D016678:Genome; D006801:Humans; D020407:Internet; D011506:Proteins / Q000737:chemistry*; D015203:Reproducibility of Results; D020539:Sequence Analysis, Protein; D012984:Software; D014584:User-Computer Interface
chemical_list: D016207:Cytokines; D004151:Dipeptides; D011506:Proteins