PT - JOURNAL ARTICLE AU - Shahin Mohammadi AU - Ananth Grama TI - A convex optimization approach for identification of human tissue-specific interactomes AID - 10.1101/036830 DP - 2016 Jan 01 TA - bioRxiv PG - 036830 4099 - http://biorxiv.org/content/early/2016/05/05/036830.short 4100 - http://biorxiv.org/content/early/2016/05/05/036830.full AB - Motivation: Analysis of organism-specific interactomes has yielded novel insights into cellular function and coordination, understanding of pathology, and identification of markers and drug targets. Genes, however, can exhibit varying levels of cell-type specificity in their expression, and their coordinated expression manifests in tissue-specific function and pathology. Tissue-specific/ selective interaction mechanisms have significant applications in drug discovery, as they are more likely to reveal drug targets. Furthermore, tissue-specific transcription factors (tsTFs) are significantly implicated in human disease, including cancers. Finally, disease genes and protein complexes have the tendency to be differentially expressed in tissues in which defects cause pathology. These observations motivate the construction of refined tissue-specific interactomes from organism-specific interactomes.Results: We present a novel technique for constructing human tissue-specific interactomes. Using a variety of validation tests (ESEA, GO Enrichment, Disease-Gene Subnetwork Compactness), we show that our proposed approach significantly outperforms state of the art techniques. Finally, using case studies of Alzheimer’s and Parkinson’s diseases, we show that tissue-specific interactomes derived from our study can be used to construct pathways implicated in pathology and demonstrate the use of these pathways in identifying novel targets.Availability: http://www.cs.purdue.edu/homes/mohammas/projects/ActPro.html