Implying analytic measures for unraveling rheumatoid arthritis significant proteins through drug target interaction

Rheumatoid arthritis (RA) is a systemic auto-immune and inflammatory disease that mainly alters the synovial joints and ultimately leads to their destruction. The involvement of the immune system and its related cells is a basic trademark of auto-immune associated diseases. The present work focuses on network analysis and its functional characterization to predict novel targets for RA. The interactive model called as Rheumatoid Arthritis Drug-Target-Protein (RA-DTP) is built of 1727 nodes and 7954 edges followed the power law distribution. RADTP comprised of 20 islands, 55 modules and 123 sub modules. Good interactome coverage of target-protein was detected in Island 2 (Q-Score 0.875) which includes 673 molecules with 20 modules and 68 sub modules. The biological landscape of these modules was examined based on the participation molecules in specific cellular localization, molecular function and biological pathway with favourable p value. Functional characterization and pathway analysis through KEGG, Biocarta and Reactome also showed their involvement in relation to the immune system and inflammatory processes and biological processes such as cell signalling and communication, glucosamine metabolic process, Renin Angiotensin system, BCR signals, Galactose metabolism, MAPK signalling, Complement and Coagulation system and NGF signalling pathways. Traffic values and centrality parameters were applied as the selection criteria for identifying potential targets from the important hubs which resulted into FOS, KNG1, PTGDS, HSP90AA1, REN, POMC, FCER1G, IL6, ICAM1, SGK1, NOS3 and PLA2G4A. This approach provides an insight to experimental validation of these associations of potential targets for clinical value to find their effect on animal studies.