PMID- 20443891 OWN - NLM STAT- MEDLINE DCOM- 20100730 LR - 20211020 IS - 1752-8062 (Electronic) IS - 1752-8054 (Print) IS - 1752-8054 (Linking) VI - 2 IP - 3 DP - 2009 Jun TI - Identification of biomarkers in human head and neck tumor cell lines that predict for in vitro sensitivity to gefitinib. PG - 183-92 LID - 10.1111/j.1752-8062.2009.00099.x [doi] AB - Potential biomarkers were identified for in vitro sensitivity to the epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor gefitinib in head and neck cancer. Gefitinib sensitivity was determined in cell lines, followed by transcript profiling coupled with a novel pathway analysis approach. Eleven cell lines were highly sensitive to gefitinib (inhibitor concentration required to give 50% growth inhibition [GI(50)] < 1 microM), three had intermediate sensitivity (GI(50) 1-7 microM), and six were resistant (GI(50) > 7 microM); an exploratory principal component analysis revealed a separation between the genomic profiles of sensitive and resistant cell lines. Subsequently, a hypothesis-driven analysis of Affymetrix data (Affymetrix, Inc., Santa Clara, CA, USA) revealed higher mRNA levels for E-cadherin (CDH1); transforming growth factor, alpha (TGF-alpha); amphiregulin (AREG); FLJ22662; EGFR; p21-activated kinase 6 (PAK6); glutathione S-transferase Pi (GSTP1); and ATP-binding cassette, subfamily C, member 5 (ABCC5) in sensitive versus resistant cell lines. A hypothesis-free analysis identified 46 gene transcripts that were strongly differentiated, seven of which had a known association with EGFR and head and neck cancer (human EGF receptor 3 [HER3], TGF-alpha, CDH1, EGFR, keratin 16 [KRT16], fibroblast growth factor 2 [FGF2], and cortactin [CTTN]). Polymerase chain reaction (PCR) and enzyme-linked immunoabsorbant assay analysis confirmed Affymetrix data, and EGFR gene mutation, amplification, and genomic gain correlated strongly with gefitinib sensitivity. We identified biomarkers that predict for in vitro responsiveness to gefitinib, seven of which have known association with EGFR and head and neck cancer. These in vitro predictive biomarkers may have potential utility in the clinic and warrant further investigation. FAU - Hickinson, D Mark AU - Hickinson DM AD - Fomerly of AstraZeneca, Alderly Park, Macclesfield, UK. FAU - Marshall, Gayle B AU - Marshall GB FAU - Beran, Garry J AU - Beran GJ FAU - Varella-Garcia, Marileila AU - Varella-Garcia M FAU - Mills, Elizabeth A AU - Mills EA FAU - South, Marie C AU - South MC FAU - Cassidy, Andrew M AU - Cassidy AM FAU - Acheson, Kerry L AU - Acheson KL FAU - McWalter, Gael AU - McWalter G FAU - McCormack, Rose M AU - McCormack RM FAU - Bunn, Paul A AU - Bunn PA FAU - French, Tim AU - French T FAU - Graham, Alex AU - Graham A FAU - Holloway, Brian R AU - Holloway BR FAU - Hirsch, Fred R AU - Hirsch FR FAU - Speake, Georgina AU - Speake G LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Clin Transl Sci JT - Clinical and translational science JID - 101474067 RN - 0 (Antineoplastic Agents) RN - 0 (Biomarkers, Tumor) RN - 0 (Neoplasm Proteins) RN - 0 (Quinazolines) RN - 0 (RNA, Messenger) RN - S65743JHBS (Gefitinib) SB - IM MH - Antineoplastic Agents/*pharmacology/therapeutic use MH - Biomarkers, Tumor/*analysis/genetics MH - Cell Line, Tumor MH - DNA Mutational Analysis MH - Drug Resistance, Neoplasm/*drug effects/genetics MH - Drug Screening Assays, Antitumor MH - Enzyme-Linked Immunosorbent Assay MH - Gefitinib MH - Gene Dosage/genetics MH - Gene Expression Profiling MH - Gene Expression Regulation, Neoplastic/drug effects MH - Genome, Human/genetics MH - Head and Neck Neoplasms/*genetics MH - Humans MH - Neoplasm Proteins/genetics/metabolism MH - Quinazolines/*pharmacology/therapeutic use MH - RNA, Messenger/genetics/metabolism PMC - PMC5350732 EDAT- 2010/05/07 06:00 MHDA- 2010/07/31 06:00 PMCR- 2009/06/01 CRDT- 2010/05/07 06:00 PHST- 2010/05/07 06:00 [entrez] PHST- 2010/05/07 06:00 [pubmed] PHST- 2010/07/31 06:00 [medline] PHST- 2009/06/01 00:00 [pmc-release] AID - CTS099 [pii] AID - 10.1111/j.1752-8062.2009.00099.x [doi] PST - ppublish SO - Clin Transl Sci. 2009 Jun;2(3):183-92. doi: 10.1111/j.1752-8062.2009.00099.x.