title: Targeted cancer therapy: promise and reality.
abstract: Signal transduction therapy for cancer targets specific molecular elements that are essential for survival of the tumor. Gleevec has a profound effect on early phase chronic myeloid leukemia because it inhibits the major driving factor of the tumor, BCR-ABL. Almost all other cancers depend on several factors, and blocking a single signal transduction factor is largely ineffective. Effective signal transduction therapy will entail finding the appropriate combination of signal transduction inhibitors for each cancer. We discuss the use of preclinical animal models to predict successful signal transduction therapy in the clinic, and conclude that their utility is limited.
authors.affiliation: Department of Biological Chemistry, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel.
authors.forename: Shoshana
authors.initials: S
authors.lastname: Klein
authors.forename: Alexander
authors.initials: A
authors.lastname: Levitzki
mesh_terms: D020533:Angiogenesis Inhibitors / Q000494:pharmacology / Q000627:therapeutic use; D000818:Animals; D000970:Antineoplastic Agents / Q000494:pharmacology / Q000627:therapeutic use*; D001549:Benzamides; D002986:Clinical Trials as Topic; D016503:Drug Delivery Systems; D004354:Drug Screening Assays, Antitumor; D066246:ErbB Receptors / Q000037:antagonists & inhibitors; D005544:Forecasting; D006801:Humans; D000068877:Imatinib Mesylate; D015464:Leukemia, Myelogenous, Chronic, BCR-ABL Positive / Q000188:drug therapy / Q000201:enzymology; D051379:Mice; D008822:Mice, Transgenic; D009363:Neoplasm Proteins / Q000037:antagonists & inhibitors* / Q000737:chemistry / Q000502:physiology; D009369:Neoplasms / Q000188:drug therapy* / Q000503:physiopathology; D014411:Neoplastic Stem Cells / Q000187:drug effects; D010879:Piperazines / Q000627:therapeutic use; D047428:Protein Kinase Inhibitors / Q000494:pharmacology / Q000627:therapeutic use; D011743:Pyrimidines / Q000627:therapeutic use; D015398:Signal Transduction / Q000187:drug effects*
chemical_list: D020533:Angiogenesis Inhibitors; D000970:Antineoplastic Agents; D001549:Benzamides; D009363:Neoplasm Proteins; D010879:Piperazines; D047428:Protein Kinase Inhibitors; D011743:Pyrimidines; D000068877:Imatinib Mesylate; D066246:ErbB Receptors