New Strategies in the Molecular Targeting of Glioblastoma: How Do You Hit a Moving Target?

• Published in: Clinical cancer research Vol. 17; no. 1; pp. 6 - 11
• Main Authors: CLOUGHESY, Timothy F, MISCHEL, Paul S
• Format: Journal Article
• Language: English
• Published: Philadelphia, PA American Association for Cancer Research 2011
• Subjects: Antineoplastic agents; Antineoplastic Agents - therapeutic use; Biological and medical sciences; Brain Neoplasms - diagnosis; Brain Neoplasms - drug therapy; Brain Neoplasms - metabolism; Glioblastoma - diagnosis; Glioblastoma - drug therapy; Glioblastoma - metabolism; Humans; Medical sciences; Molecular Targeted Therapy - methods; Neurology; Pharmacology. Drug treatments; Tumors of the nervous system. Phacomatoses; Malignant glioma; Nervous system diseases; Target; Targeting; Central nervous system disease; Glioblastoma; Malignant tumor; Molecular targeting; Research and development; Cancer
• ISSN: 1078-0432; 1557-3265
• DOI: 10.1158/1078-0432.ccr-09-2268

Cancer is a molecularly complex, genomically unstable disease. Selection for drug-resistant mutations, activation of feedback loops, and upregulation of cross-talk pathways provide escape routes by which cancer cells maintain signal flux through critical downstream effectors to promote therapeutic resistance. Attempts to target signal transduction pathways in cancer may therefore require investigators to aim at a moving target. We need to anticipate the routes of resistance to guide the selection of drugs that will lead to durable therapeutic response. In this New Strategies article, we discuss the challenges imposed by the complexity and adaptive capacity of cancer and suggest potential new diagnostic strategies to more effectively guide targeted cancer therapy. We focus on glioblastoma, the most common malignant primary brain tumor of adults. Glioblastoma is a model for a pathway-driven, molecularly heterogeneous cancer for which new genomic insights obtained through The Cancer Genome Atlas are ripe for integration with functional biology and incorporation into new molecular diagnostic assays.