PMID- 36993275 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240212 DP - 2023 Mar 14 TI - 2-Deoxyglucose and hydroxychloroquine HPLC-MS-MS analytical methods and pharmacokinetic interactions after oral co-administration in male rats. LID - rs.3.rs-2675386 [pii] LID - 10.21203/rs.3.rs-2675386/v1 [doi] AB - Our previous work has shown a synergistic tumoricidal action of the hexokinase (HK) inhibitor 2-deoxyglucose (2-DG) and the autophagy inhibitor chloroquine (CQ) on HK2-addicted prostate cancers in animal models through intraperitoneal injections. Here we developed high performance liquid chromatography-tandem mass spectrometry (HPLC-MS-MS) methods for 2-DG and clinically favored drug hydroxychloroquine (HCQ) and explored PK interaction of the orally administered drugs in a jugular vein cannulated male rat model, which allowed serial blood collection before and 0.5, 1, 2, 4 and 8 h after a single gavage dose of each drug alone or simultaneously after appropriate washout periods between the drugs. The results demonstrated a rapid and satisfactory separation of 2-DG standard from common monosaccharides by HPLC-MS-MS multi-reaction monitoring (MRM) and the presence of endogenous "2-DG". Application of the HPLC-MS-MS 2-DG and HCQ methods to sera samples of 9 evaluable rats showed a peak time (T(max)) of 2-DG of 0.5 h after 2-DG dosing alone or with HCQ and glucose-like PK behavior. With a seemingly bi-modal time course for HCQ, the T(max) for HCQ dosing alone (1.2 h) was faster than that for the combination (2 h; p = 0.013, 2-tailed t-test). After combination dosing, the peak concentration (C(max)) and area under the curve (AUC) of 2-DG were decreased by 54% (p < 0.0001) and 52%, whereas those for HCQ were decreased by 40% (p = 0.026) and 35%, respectively, compared to single dosing. The data suggest significant negative PK interactions between the two oral drugs taken simultaneously and warrant optimization efforts for the combination regimen. FAU - Sun, Dongxiao AU - Sun D AD - Penn State College of Medicine. FAU - Kim, Sangyub AU - Kim S AD - Penn State College of Medicine. FAU - Karelia, Deepkamal AU - Karelia D AD - Penn State College of Medicine. FAU - Deng, Yibin AU - Deng Y AD - University of Minnesota. FAU - Jiang, Cheng AU - Jiang C AD - Penn State College of Medicine. FAU - Lu, Junxuan AU - Lu J AD - Penn State College of Medicine. LA - eng GR - R21 CA218774/CA/NCI NIH HHS/United States PT - Preprint DEP - 20230314 PL - United States TA - Res Sq JT - Research square JID - 101768035 UIN - Pharmacol Res Perspect. 2024 Feb;12(1):e1173. PMID: 38294142 PMC - PMC10055671 OTO - NOTNLM OT - 2-deoxyglucose OT - HPLC-MS-MS OT - drug-drug interaction OT - hydroxychloroquine OT - oral drug-drug PK interference EDAT- 2023/03/31 06:00 MHDA- 2023/03/31 06:01 PMCR- 2023/03/29 CRDT- 2023/03/30 02:51 PHST- 2023/03/31 06:00 [pubmed] PHST- 2023/03/31 06:01 [medline] PHST- 2023/03/30 02:51 [entrez] PHST- 2023/03/29 00:00 [pmc-release] AID - rs.3.rs-2675386 [pii] AID - 10.21203/rs.3.rs-2675386/v1 [doi] PST - epublish SO - Res Sq [Preprint]. 2023 Mar 14:rs.3.rs-2675386. doi: 10.21203/rs.3.rs-2675386/v1.