title: Development and validation of a highly sensitive LC-MS/MS method for quantification of IC87114 in mice plasma, bronchoalveolar lavage and lung samples: Application to pharmacokinetic study.
abstract: IC87114 is a selective PI3Kδ inhibitor. A simple, sensitive and reliable LC-MS/MS method with rapid sample preparation was developed and validated for the determination of IC87114 in mouse plasma, bronchoalveolar lavage, and lung. Chromatographic separation was achieved using an Agilent Zorbax Eclipse XDB-C18 column (150mm×2.1mm internal diameter, 3.5μm particle size). Mass spectrometric detection was conducted by electrospray ionization in positive ion multiple reaction monitoring modes. The calibration curve was linear over a concentration range of 0.01-1000ng/mL for plasma/BAL and 0.1-250ng/mL for lung tissue. Recoveries were as high as 97.29%, 102.81% and 89.70% for plasma, BAL fluid and lung sample, respectively. The lower limit of quantification was 0.01ng/mL. Intra-day and inter-day accuracy and precision were within the acceptable limits of ±15% at all concentrations. Finally, the method was successfully used in a pharmacokinetic study that measured IC87114 in mouse plasma, BAL fluid and lung tissue after administration of a single 1mg/kg intratracheal dose of IC87114. The percentage change for incurred sample reanalysis (ISR) was within ±15.0% and met the acceptance criteria for ISR.
authors.affiliation: Department of Pharmacology, School of Medicine, Chonbuk National University, Jeonju 560-182, Republic of Korea.
authors.forename: Anu
authors.initials: A
authors.lastname: Marahatta
authors.affiliation: Department of Pharmacology, School of Medicine, Chonbuk National University, Jeonju 560-182, Republic of Korea.
authors.forename: Bidur
authors.initials: B
authors.lastname: Bhandary
authors.affiliation: Department of Internal Medicine, School of Medicine, Chonbuk National University, Jeonju 560-182, Republic of Korea.
authors.forename: Yong-Chul
authors.initials: YC
authors.lastname: Lee
authors.affiliation: Department of Internal Medicine, School of Medicine, Chonbuk National University, Jeonju 560-182, Republic of Korea.
authors.forename: So-Ri
authors.initials: SR
authors.lastname: Kim
authors.affiliation: Department of Pharmacology, School of Medicine, Chonbuk National University, Jeonju 560-182, Republic of Korea. Electronic address: hjchae@chonbuk.ac.kr.
authors.forename: Han-Jung
authors.initials: HJ
authors.lastname: Chae
mesh_terms: D000225:Adenine / Q000031:analogs & derivatives* / Q000096:biosynthesis / Q000378:metabolism / Q000493:pharmacokinetics; D000818:Animals; D018893:Bronchoalveolar Lavage / Q000379:methods; D002853:Chromatography, Liquid / Q000379:methods*; D008168:Lung / Q000378:metabolism*; D051379:Mice; D008810:Mice, Inbred C57BL; D011799:Quinazolines / Q000378:metabolism / Q000493:pharmacokinetics*; D053719:Tandem Mass Spectrometry / Q000379:methods*
chemical_list: C477872:IC 87114; D011799:Quinazolines; D000225:Adenine
keywords: IC87114; Intratracheal; LC–MS/MS; PI3K; Pharmacokinetic