Frontiers in Drug Design and Discovery is a book series devoted to publishing the latest and the most important advances in drug design and discovery. Eminent scientists have contributed chapters focused on all areas of rational drug design and drug discovery including medicinal chemistry, in-silico drug design, combinatorial chemistry, high-throughput screening, drug targets, and structure-activity relationships. This book series should prove to be of interest to all pharmaceutical scientists who are involved in research in drug design and discovery and who wish to keep abreast of rapid and important developments in the field. The ninth volume of this series brings together reviews covering topics related to the treatment of neoplasms, systems biology, respiratory diseases among others. Topics included in this volume are: -Prognostic biomarkers in prostate cancer-Chemoresistance in cancer cells-GPCRS in systems and synthetic biology-Mechanisms of action of ribavirin in different diseases-Carbon nanotubes and drug targets-The role of phosphatase I inhibitors in Minkowski spaces-Phosphodiesterase targeting for treating respiratory diseases