title: Molecules in medicine mini-review: isoforms of PI3K in biology and disease.
abstract: The PI3K lipid kinases are involved in signal transduction and intracellular vesicular traffic, endowing these enzymes with multiple cellular functions and important roles in normal physiology and disease. In this mini-review, we aim to distill from the vast PI3K literature the key relevant concepts for successful targeting of this pathway in disease. Of the eight isoforms of PI3K, the class I PI3Ks have been implicated in the aetiology and maintenance of various diseases, most prominently cancer, overgrowth syndromes, inflammation and autoimmunity, with emerging potential roles in metabolic and cardiovascular disorders. The development of class I PI3K inhibitors, mainly for use in cancer and inflammation, is a very active area of drug development. In 2014, an inhibitor of the p110δ isoform of PI3K was approved for the treatment of specific human B cell malignancies. The key therapeutic indications of targeting each class I PI3K isoform are summarized and discussed.
authors.affiliation: UCL Cancer Institute, University College London, 72 Huntley Street, London, WC1E 6BT, UK. bart.vanh@ucl.ac.uk.
authors.forename: Bart
authors.initials: B
authors.lastname: Vanhaesebroeck
authors.affiliation: UCL Cancer Institute, University College London, 72 Huntley Street, London, WC1E 6BT, UK.
authors.forename: Maria A
authors.initials: MA
authors.lastname: Whitehead
authors.affiliation: UCL Cancer Institute, University College London, 72 Huntley Street, London, WC1E 6BT, UK.
authors.forename: Roberto
authors.initials: R
authors.lastname: Piñeiro
mesh_terms: D058543:Class Ia Phosphatidylinositol 3-Kinase / Q000235:genetics / Q000378:metabolism*; D006801:Humans; D007249:Inflammation / Q000188:drug therapy*; D009369:Neoplasms / Q000188:drug therapy*; D000081082:Phosphoinositide-3 Kinase Inhibitors; D010766:Phosphorylation; D020033:Protein Isoforms / Q000235:genetics; D015398:Signal Transduction
chemical_list: D000081082:Phosphoinositide-3 Kinase Inhibitors; D020033:Protein Isoforms; D058543:Class Ia Phosphatidylinositol 3-Kinase
keywords: Autoimmunity; Cancer; Diabetes; Immunity; Inflammation; Metabolic syndrome; Obesity; Overgrowth syndrome; PI3K; Pharmacological inhibitor; Signalling; Vesicular traffic