Abstract
Abstract
Omics based biomarker technologies including metabolic profiling ( metabolomics /metabonomics) and lipidomics are making a significant impact on disease understanding, drug development, and translational research. A wide range of patho-physiological processes involve lipids, monitoring changes in lipid concentration can give valuable insights into drug toxicity and off target pharmacology. Here we report changes in plasma lipid profiles of male C57Bl/6JRj mice following the PO and IV administration of the TKI inhibitor gefitinib were studied using untargeted LC/MS. Statistical analysis the data obtained for both the IV and PO samples showed time-related changes in the amounts of lipids from a number of classes affected. The largest changes were associated with a rapid onset of these changes following gefitinib administration followed by a gradual returning to the type of profiles seen for predose samples by 24 h post dose. Investigation of the lipids responsible for the variance observed in the data showed that GPE, GPI, GPA, PC and LPC were subject to the largest disruption with both transient increases and decreases in relative amounts seen in response to administration of the drug. The pattern of the changes in the relative amounts of the lipids subject to change appeared to correlate with the pharmacokinetics of gefitinib (and its major metabolites) and supports the concept of a distinct pharmacometabodynamic relationship
Publisher
Research Square Platform LLC
Reference36 articles.
1. ZD1839 (Iressa) in non-small cell lung cancer;Herbst RS;Oncologist. 7, Suppl,2002
2. Vansteenkiste, J., Gefitinib (Iressa): a novel treatment for non-small cell lung cancer. Expert Rev Anticancer Ther. 4(1), 5–17, (2004). doi: 10.1586/14737140.4.1.5
3. Blagosklonny. M.V., Darzynkiewicz, Z. Why Iressa failed: toward novel use of kinase inhibitors (outlook). Cancer Biol Ther. 2(2), 137 – 40, (2003) doi: 10.4161
4. Blackledge, G. & Averbuch, S. Gefitinib ('Iressa', ZD1839) and new epidermal growth factor receptor inhibitors. Br J Cancer. 9;90(3), 566 – 72, 2004. doi: 10.1038
5. Pharmacokinetics of gefitinib, an epidermal growth factor receptor tyrosine kinase inhibitor, in rat and dog;McKillop D;Xenobiotica,2004