title: In silico analysis of p53 using the p53 knowledgebase: mutations, polymorphisms, microRNAs and pathways.
abstract: P53 is probably the most important tumor suppressor known. Over the years, information about this gene has increased dramatically. We have built a comprehensive knowledgebase of p53, which aims to facilitate wet-lab biologists to formulate their experiments and new-comers to learn whatever they need about the gene and bioinformaticians to make new discoveries through data analysis. Using the information curated, including mutation information, transcription factors, transcriptional targets, and single nucleotide polymorphisms, we have performed extensive bioinformatics analysis, and made several new discoveries about p53. We have identified point missense mutations that are over-represented in cancers, but lack of functional studies. By assessing the capability of six p53 transcriptional targets' tag SNPs selected from HapMap to capture SNPs obtained from National Institute of Environmental Health Sciences (NIEHS) Environmental Genome project and vice versa, we conclude that NIEHS data is a better source for tagSNP selections of these genes in future association studies. Analysis of microRNA regulation in the transcriptional network of the p53 gene reveals potentially important regulatory relationships between oncogenic microRNAs and transcription factors of p53. By mapping transcription factors of p53 to pathways involved in cell cycle and apoptosis, we have identified distinctive transcriptional controls of p53 in these two physiological states.
authors: Institute of Molecular and Cell Biology, Proteos, Singapore.
authors: Yuchen
authors: Y
authors: Yang
authors: Erwin
authors: E
authors: Tantoso
authors: Gek Huey
authors: GH
authors: Chua
authors: Zhen Xuan
authors: ZX
authors: Yeo
authors: Felicia Soo Lee
authors: FS
authors: Ng
authors: Sum Thai
authors: ST
authors: Wong
authors: Cheuk Wang
authors: CW
authors: Chung
authors: Kuo-Bin
authors: KB
authors: Li
mesh_terms: D017209:Apoptosis; D003062:Codon; D019295:Computational Biology / Q000379:methods; D020869:Gene Expression Profiling; D015972:Gene Expression Regulation, Neoplastic; D016158:Genes, p53; D006801:Humans; D035683:MicroRNAs / Q000235:genetics* / Q000378:metabolism; D020125:Mutation, Missense; D020411:Oligonucleotide Array Sequence Analysis; D017354:Point Mutation; D011110:Polymorphism, Genetic; D020641:Polymorphism, Single Nucleotide; D014158:Transcription, Genetic; D016159:Tumor Suppressor Protein p53 / Q000378:metabolism*
chemical_list: D003062:Codon; D035683:MicroRNAs; D016159:Tumor Suppressor Protein p53