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The LC-MS/MS-Based Measurement of Isopimaric Acid in Rat Plasma and Application of Pharmacokinetics. BIOMED RESEARCH INTERNATIONAL 2021; 2021:2310422. [PMID: 34692827 PMCID: PMC8536414 DOI: 10.1155/2021/2310422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 08/06/2021] [Accepted: 09/20/2021] [Indexed: 11/28/2022]
Abstract
Isopimaric acid (IPA) exhibits a diverse array of pharmacological activities, having been shown to function as an antihypertensive, antitumor, antibacterial, and hypocholesterolemic agent. However, few studies of the pharmacokinetics of IPA have been performed to date, and such analyses are essential to explore the in vivo mechanisms governing the biological activity of this compound. As such, we herein designed a selective LC-MS approach capable of quantifying serum IPA levels in model rats using an Agilent HC-C18 column (250 mm × 4.6 mm, 5 μm) via isocratic elution with a mobile phase composed of methanol 0.5% formic acid (91 : 9, v/v) at a 1 mL/min flow rate. Ion monitoring at m/z 301.2 [M-H]− was used to quantify IPA levels in plasma samples from these rats, while internal standard (IS) levels were assessed at m/z 455.3 [M-H]−. After validation, this approach was employed to conduct a pharmacokinetic analysis of rats administered IPA via the oral (p.o. 50, 100, or 200 mg/kg) and intravenous (i.v. 5 mg/kg) routes. Analyses of noncompartmental pharmacokinetic parameters revealed that IPA underwent secondary absorption following oral administration to these animals, with the two tested oral doses (50 and 100 mg/kg) being associated with respective absolute bioavailability values of 11.9% and 17.5%. In summary, this study may provide a foundation for future efforts to explore the mechanistic basis for the pharmacological activity of IPA, offering insights to guide its subsequent clinical utilization.
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Zhang RR, Grudzinksi JJ, Mehta TI, Burnette RR, Hernandez R, Clark PA, Lubin JA, Pinchuk AN, Jeffrey J, Longino M, Kuo JS, Weichert JP. In Silico Docking of Alkylphosphocholine Analogs to Human Serum Albumin Predicts Partitioning and Pharmacokinetics. Mol Pharm 2019; 16:3350-3360. [PMID: 31082240 DOI: 10.1021/acs.molpharmaceut.8b01301] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Alkylphosphocholine (APC) analogs are a novel class of broad-spectrum tumor-targeting agents that can be used for both diagnosis and treatment of cancer. The potential for clinical translation for APC analogs will strongly depend on their pharmacokinetic (PK) profiles. The aim of this work was to understand how the chemical structures of various APC analogs impact binding and PK. To achieve this aim, we performed in silico docking analysis, in vitro and in vivo partitioning experiments, and in vivo PK studies. Our results have identified 7 potential high-affinity binding sites of these compounds on human serum albumin (HSA) and suggest that the size of the functional group directly influences the albumin binding, partitioning, and PK. Namely, the bulkier the functional groups, the weaker the agent binds to albumin, the more the agent partitions onto lipoproteins, and the less time the agent spends in circulation. The results of these experiments provide novel molecular insights into the binding, partitioning, and PK of this class of compounds and similar molecules as well as suggest pharmacological strategies to alter their PK profiles. Importantly, our methodology may provide a way to design better drugs by better characterizing the PK profile for lead compound optimization.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Marc Longino
- Cellectar Biosciences Inc. , Madison , Wisconsin , United States
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Wong ALA, Xiang X, Ong PS, Mitchell EQY, Syn N, Wee I, Kumar AP, Yong WP, Sethi G, Goh BC, Ho PCL, Wang L. A Review on Liquid Chromatography-Tandem Mass Spectrometry Methods for Rapid Quantification of Oncology Drugs. Pharmaceutics 2018; 10:pharmaceutics10040221. [PMID: 30413076 PMCID: PMC6321130 DOI: 10.3390/pharmaceutics10040221] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 11/05/2018] [Indexed: 12/31/2022] Open
Abstract
In the last decade, the tremendous improvement in the sensitivity and also affordability of liquid chromatography-tandem mass spectrometry (LC-MS/MS) has revolutionized its application in pharmaceutical analysis, resulting in widespread employment of LC-MS/MS in determining pharmaceutical compounds, including anticancer drugs in pharmaceutical research and also industries. Currently, LC-MS/MS has been widely used to quantify small molecule oncology drugs in various biological matrices to support preclinical and clinical pharmacokinetic studies in R&D of oncology drugs. This mini-review article will describe the state-of-the-art LC-MS/MS and its application in rapid quantification of small molecule anticancer drugs. In addition, efforts have also been made in this review to address several key aspects in the development of rapid LC-MS/MS methods, including sample preparation, chromatographic separation, and matrix effect evaluation.
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Affiliation(s)
- Andrea Li-Ann Wong
- Cancer Science Institute of Singapore, National University of Singapore, Singapore 117599, Singapore.
- Department of Haematology-Oncology, National University Health System, Singapore 119228, Singapore.
| | - Xiaoqiang Xiang
- School of Pharmacy, Fudan University, Shanghai 201203, China.
| | - Pei Shi Ong
- Department of Pharmacy, National University of Singapore, Singapore 117543, Singapore.
| | - Ee Qin Ying Mitchell
- Department of Pharmacy, National University of Singapore, Singapore 117543, Singapore.
| | - Nicholas Syn
- Cancer Science Institute of Singapore, National University of Singapore, Singapore 117599, Singapore.
- Department of Haematology-Oncology, National University Health System, Singapore 119228, Singapore.
| | - Ian Wee
- Cancer Science Institute of Singapore, National University of Singapore, Singapore 117599, Singapore.
- Department of Haematology-Oncology, National University Health System, Singapore 119228, Singapore.
| | - Alan Prem Kumar
- Cancer Science Institute of Singapore, National University of Singapore, Singapore 117599, Singapore.
- Department of Pharmacology, Yong Loo Lin School of Medicine, Singapore 117597, Singapore.
| | - Wei Peng Yong
- Cancer Science Institute of Singapore, National University of Singapore, Singapore 117599, Singapore.
- Department of Haematology-Oncology, National University Health System, Singapore 119228, Singapore.
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, Singapore 117597, Singapore.
| | - Boon Cher Goh
- Cancer Science Institute of Singapore, National University of Singapore, Singapore 117599, Singapore.
- Department of Haematology-Oncology, National University Health System, Singapore 119228, Singapore.
- Department of Pharmacology, Yong Loo Lin School of Medicine, Singapore 117597, Singapore.
| | - Paul Chi-Lui Ho
- Department of Pharmacy, National University of Singapore, Singapore 117543, Singapore.
| | - Lingzhi Wang
- Cancer Science Institute of Singapore, National University of Singapore, Singapore 117599, Singapore.
- Department of Pharmacology, Yong Loo Lin School of Medicine, Singapore 117597, Singapore.
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Baiu DC, Marsh IR, Boruch AE, Shahi A, Bhattacharya S, Jeffery JJ, Zhao Q, Hall LT, Weichert JP, Bednarz BP, Otto M. Targeted Molecular Radiotherapy of Pediatric Solid Tumors Using a Radioiodinated Alkyl-Phospholipid Ether Analog. J Nucl Med 2017; 59:244-250. [PMID: 28747518 DOI: 10.2967/jnumed.117.193748] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 06/06/2017] [Indexed: 01/10/2023] Open
Abstract
External-beam radiotherapy plays a critical role in the treatment of most pediatric solid tumors. Particularly in children, achieving an optimal therapeutic index to avoid damage to normal tissue is extremely important. Consequently, in metastatic disease, the utility of external-beam radiotherapy is limited. Molecular radiotherapy with tumor-targeted radionuclides may overcome some of these challenges, but to date there exists no single cancer-selective agent capable of treating various pediatric malignancies independently of their histopathologic origin. We tested the therapeutic potential of the clinical-grade alkyl-phospholipid ether analog CLR1404, 18-(p-iodophenyl)octadecyl phosphocholine, as a scaffold for tumor-targeted radiotherapy of pediatric malignancies. Methods: Uptake of CLR1404 by pediatric solid tumor cells was tested in vitro by flow cytometry and in vivo by PET/CT imaging and dosimetry. The therapeutic potential of 131I-CLR1404 was evaluated in xenograft models. Results: In vitro, fluorescent CLR1404-BODIPY showed significant selective uptake in a variety of pediatric cancer lines compared with normal controls. In vivo tumor-targeted uptake in mouse xenograft models using 124I-CLR1404 was confirmed by imaging. Single-dose intravenous injection of 131I-CLR1404 significantly delayed tumor growth in all rodent pediatric xenograft models and extended animal survival while demonstrating a favorable side effect profile. Conclusion:131I-CLR1404 has the potential to become a tumor-targeted radiotherapeutic drug with broad applicability in pediatric oncology. Because 131I-CLR1404 has entered clinical trials in adults, our data warrant the development of pediatric clinical trials for this particularly vulnerable patient population.
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Affiliation(s)
- Dana C Baiu
- Department of Pediatrics, Carbone Cancer Center, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin
| | - Ian R Marsh
- Department of Medical Physics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin
| | - Alexander E Boruch
- Department of Pediatrics, Carbone Cancer Center, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin
| | - Ankita Shahi
- Department of Pediatrics, Carbone Cancer Center, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin
| | - Saswati Bhattacharya
- Department of Pediatrics, Carbone Cancer Center, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin
| | - Justin J Jeffery
- Department of Radiology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin; and
| | - Qianqian Zhao
- Department of Biostatistics and Medical Informatics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin
| | - Lance T Hall
- Department of Radiology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin; and
| | - Jamey P Weichert
- Department of Medical Physics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin.,Department of Radiology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin; and
| | - Bryan P Bednarz
- Department of Medical Physics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin
| | - Mario Otto
- Department of Pediatrics, Carbone Cancer Center, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin
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Guo L, Duan L, Dong X, Dou LL, Zhou P, Liu EH, Li P. A simple and sensitive LC–MS/MS method for determination of miltirone in rat plasma and its application to pharmacokinetic studies. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 973C:33-38. [DOI: 10.1016/j.jchromb.2014.10.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 09/24/2014] [Accepted: 10/03/2014] [Indexed: 01/31/2023]
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Grudzinski JJ, Titz B, Kozak K, Clarke W, Allen E, Trembath L, Stabin M, Marshall J, Cho SY, Wong TZ, Mortimer J, Weichert JP. A phase 1 study of 131I-CLR1404 in patients with relapsed or refractory advanced solid tumors: dosimetry, biodistribution, pharmacokinetics, and safety. PLoS One 2014; 9:e111652. [PMID: 25402488 PMCID: PMC4234270 DOI: 10.1371/journal.pone.0111652] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Accepted: 08/20/2014] [Indexed: 11/25/2022] Open
Abstract
Introduction 131I-CLR1404 is a small molecule that combines a tumor-targeting moiety with a therapeutic radioisotope. The primary aim of this phase 1 study was to determine the administered radioactivity expected to deliver 400 mSv to the bone marrow. The secondary aims were to determine the pharmacokinetic (PK) and safety profiles of 131I-CLR1404. Methods Eight subjects with refractory or relapsed advanced solid tumors were treated with a single injection of 370 MBq of 131I-CLR1404. Whole body planar nuclear medicine scans were performed at 15–35 minutes, 4–6, 18–24, 48, 72, 144 hours, and 14 days post injection. Optional single photon emission computed tomography imaging was performed on two patients 6 days post injection. Clinical laboratory parameters were evaluated in blood and urine. Plasma PK was evaluated on 127I-CLR1404 mass measurements. To evaluate renal clearance of 131I-CLR1404, urine was collected for 14 days post injection. Absorbed dose estimates for target organs were determined using the RADAR method with OLINDA/EXM software. Results Single administrations of 370 MBq of 131I-CLR1404 were well tolerated by all subjects. No severe adverse events were reported and no adverse event was dose-limiting. Plasma 127I-CLR1404 concentrations declined in a bi-exponential manner with a mean t½ value of 822 hours. Mean Cmax and AUC(0-t) values were 72.2 ng/mL and 15753 ng•hr/mL, respectively. An administered activity of approximately 740 MBq is predicted to deliver 400 mSv to marrow. Conclusions Preliminary data suggest that 131I-CLR1404 is well tolerated and may have unique potential as an anti-cancer agent. Trial Registration ClinicalTrials.gov NCT00925275
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Affiliation(s)
- Joseph J. Grudzinski
- Cellectar Biosciences, Inc., Madison, WI, United States of America
- Department of Medical Physics, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States of America
- * E-mail:
| | - Benjamin Titz
- Cellectar Biosciences, Inc., Madison, WI, United States of America
- Department of Medical Physics, University of Wisconsin School of Medicine and Public Health, Madison, WI, United States of America
| | - Kevin Kozak
- Cellectar Biosciences, Inc., Madison, WI, United States of America
| | - William Clarke
- Cellectar Biosciences, Inc., Madison, WI, United States of America
| | - Ernest Allen
- Cellectar Biosciences, Inc., Madison, WI, United States of America
| | - LisaAnn Trembath
- Cellectar Biosciences, Inc., Madison, WI, United States of America
| | - Michael Stabin
- Department of Radiology and Radiological Sciences, Vanderbilt University, Nashville, TN, United States of America
| | - John Marshall
- Department of Medicine and Lombardi Comprehensive Cancer Center, Medstar Georgetown University Hospital, Washington, DC, United States of America
| | - Steve Y. Cho
- Department of Radiology, Johns Hopkins Hospital, Baltimore, MD, United States of America
| | - Terence Z. Wong
- Department of Radiology, Duke University Medical Center, Durham, NC, United States of America
| | - Joanne Mortimer
- Department of Medical Oncology and Therapeutics Research, City of Hope, Duarte, CA, United States of America
| | - Jamey P. Weichert
- Cellectar Biosciences, Inc., Madison, WI, United States of America
- Department of Radiology, University of Wisconsin, Madison, WI, United States of America
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Dorlo TPC, Balasegaram M, Beijnen JH, de Vries PJ. Miltefosine: a review of its pharmacology and therapeutic efficacy in the treatment of leishmaniasis. J Antimicrob Chemother 2012; 67:2576-97. [PMID: 22833634 DOI: 10.1093/jac/dks275] [Citation(s) in RCA: 501] [Impact Index Per Article: 41.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Miltefosine is an alkylphosphocholine drug with demonstrated activity against various parasite species and cancer cells as well as some pathogenic bacteria and fungi. For 10 years it has been licensed in India for the treatment of visceral leishmaniasis (VL), a fatal neglected parasitic disease. It is the first and still the only oral drug that can be used to treat VL and cutaneous leishmaniasis (CL). The standard 28 day miltefosine monotherapy regimen is well tolerated, except for mild gastrointestinal side effects, although its teratogenic potential severely hampers its general use in the clinic and roll-out in national elimination programmes. The pharmacokinetics of miltefosine are mainly characterized by its long residence time in the body, resulting in extensive drug accumulation during treatment and long elimination half-lives. At the moment, different combination therapy strategies encompassing miltefosine are being tested in multiple controlled clinical trials in various geographical areas of endemicity, both in South Asia and East Africa. We here review the most salient pre-clinical and clinical pharmacological aspects of miltefosine, its mechanism of action against Leishmania parasites and other pathogens, and provide a systematic overview of the efficacy and safety data from all clinical trials of miltefosine, either alone or in combination, in the treatment of VL and CL.
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Affiliation(s)
- Thomas P C Dorlo
- Center for Tropical Medicine and Travel Medicine, Division of Infectious Diseases, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
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