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Yu X, Yu W, Han X, Chen Z, Wang S, Zhai H. Sensitive analysis of doxorubicin and curcumin by micellar electromagnetic chromatography with a double wavelength excitation source. Anal Bioanal Chem 2020; 413:469-478. [PMID: 33118040 DOI: 10.1007/s00216-020-03017-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 10/06/2020] [Accepted: 10/16/2020] [Indexed: 12/01/2022]
Abstract
Doxorubicin has been extensively used to treat cancers, and there are recent findings that the anticancer activities can be enhanced by curcumin. Although the two compounds have native fluorescence, they can hardly be quantified directly simultaneously using the laser-induced fluorescence (LIF) detection method. To avoid complex fluorescence derivatization and introduction of interfering components, a highly sensitive double wavelength excitation source LIF (D-W-Ex-LIF) detector composed of a 445-nm and 488-nm commercial laser diode was constructed to detect them simultaneously. Rhodamine 6G was selected as an internal standard, because its fluorescence can be excited at 445 nm and 488 nm. The native fluorescence of doxorubicin and curcumin and their resolution were enhanced by introducing mixed micelles. The optimal electrophoretic separation buffer was 10 mM borate buffer containing 20 mM Triton X-100, 5 mM sodium dodecyl sulfate, and 30% (v/v) methanol at pH 9.00. Therefore, the developed method was specific, accurate, and easily operable. Its limits of detection for doxorubicin and curcumin in human urine samples were 4.00 × 10-3 and 1.00 × 10-2 μg/mL, respectively, and the limits of quantification were 1.00 × 10-2 and 3.00 × 10-2 μg/mL, respectively. The recoveries were 94.9-109.1%. Graphical abstract.
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Affiliation(s)
- Xiao Yu
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
| | - Wanxiang Yu
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Xiufen Han
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Zuanguang Chen
- School of Pharmaceutical Science, Sun Yat-sen University, Guangzhou, 510006, China
| | - Shumei Wang
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China.,Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica of State Administration of TCM, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Haiyun Zhai
- College of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
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Choi WG, Kim DK, Shin Y, Park R, Cho YY, Lee JY, Kang HC, Lee HS. Liquid Chromatography-Tandem Mass Spectrometry for the Simultaneous Determination of Doxorubicin and its Metabolites Doxorubicinol, Doxorubicinone, Doxorubicinolone, and 7-Deoxydoxorubicinone in Mouse Plasma. Molecules 2020; 25:molecules25051254. [PMID: 32164308 PMCID: PMC7179444 DOI: 10.3390/molecules25051254] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 03/07/2020] [Accepted: 03/08/2020] [Indexed: 12/18/2022] Open
Abstract
Doxorubicin, an anthracycline antitumor antibiotic, acts as a cancer treatment by interfering with the function of DNA. Herein, liquid chromatography-tandem mass spectrometry was for the first time developed and validated for the simultaneous determination of doxorubicin and its major metabolites doxorubicinol, doxorubicinone, doxorubicinolone, and 7-deoxydoxorubicinone in mouse plasma. The liquid–liquid extraction of a 10 μL mouse plasma sample with chloroform:methanol (4:1, v/v) and use of the selected reaction monitoring mode led to less matrix effect and better sensitivity. The lower limits of quantification levels were 0.5 ng/mL for doxorubicin, 0.1 ng/mL for doxorubicinol, and 0.01 ng/mL for doxorubicinone, doxorubicinolone, and 7-deoxydoxorubicinone. The standard curves were linear over the range of 0.5–200 ng/mL for doxorubicin; 0.1–200 ng/mL for doxorubicinol; and 0.01–50 ng/mL for doxorubicinone, doxorubicinolone, and 7-deoxydoxorubicinone in mouse plasma. The intra and inter-day relative standard deviation and relative errors for doxorubicin and its four metabolites at four quality control concentrations were 0.9–13.6% and –13.0% to 14.9%, respectively. This method was successfully applied to the pharmacokinetic study of doxorubicin and its metabolites after intravenous administration of doxorubicin at a dose of 1.3 mg/kg to female BALB/c nude mice.
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Wang M, Guo J, Wang Z, Zhang G, Yu H, Chang R, Chen A. Simultaneous separation and determination of hirsutine and hirsuteine by cyclodextrin-modified micellar electrokinetic capillary chromatography. PHYTOCHEMICAL ANALYSIS : PCA 2020; 31:112-118. [PMID: 31328320 DOI: 10.1002/pca.2871] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 05/26/2019] [Accepted: 06/03/2019] [Indexed: 06/10/2023]
Abstract
INTRODUCTION Hirsutine and hirsuteine are the main pharmacological activity ingredients of Uncaria rhynchophylla (UR), playing an important role in treating mental and cardiovascular diseases, such as Alzheimer's disease, hypertension, Parkinson's disease, potential anti-cancer activities and so on. OBJECTIVE To develop a cyclodextrin-modified micellar electrokinetic capillary chromatography (CD-MEKC) method for the simultaneous separation and determination of hirsutine and hirsuteine from UR and its formulations. METHODOLOGY The optimal method was developed by investigating influences of significant factors on the separation, and this method was successfully applied for the determination of hirsutine and hirsuteine in UR and its formulations. RESULTS The optimal background electrolyte (BGE) consisted of 40 mM sodium dihydrogen phosphate (pH 7.0), 150 mM 2,6-dimethyl-β-cyclodextrin (DM-β-CD), 3 mM mono-(6-ethylenediamine-6-deoxy)-β-cyclodextrin (ED-β-CD), and 30 mM sodium cholate (SC). Under these conditions, hirsutine and hirsuteine were successfully separated within 13 min at the separation voltage of 15 kV, temperature of 25°C and the detection wavelength of 224 nm. For the analytes, linear calibration curves were performed within the range 5.0-160.0 μg/mL. The limit of detection (LOD, S/N = 3) and the limit of quantitation (LOQ, S/N = 10) were 0.41, 1.42 μg/mL for hirsutine and 0.60, 2.17 μg/mL for hirsuteine, respectively. The recoveries of three samples were from 97.9% to 102.3%. CONCLUSION The method was successfully applied to the determination of hirsutine and hirsuteine in UR and its formulations. Meanwhile, it provides an effective reference of the quality control of UR and its formulations.
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Affiliation(s)
- Mengli Wang
- School of Pharmacy, Shanxi Medical University, Taiyuan, P. R. China
| | - Jing Guo
- School of Pharmacy, Shanxi Medical University, Taiyuan, P. R. China
| | - Zhiying Wang
- School of Pharmacy, Shanxi Medical University, Taiyuan, P. R. China
| | - Guangbin Zhang
- School of Pharmacy, Shanxi Medical University, Taiyuan, P. R. China
| | - Haixia Yu
- Translational Medicine Research Centre, Shanxi Medical University, Taiyuan, P. R. China
| | - Ruimiao Chang
- School of Pharmacy, Shanxi Medical University, Taiyuan, P. R. China
| | - Anjia Chen
- School of Pharmacy, Shanxi Medical University, Taiyuan, P. R. China
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Guichard N, Guillarme D, Bonnabry P, Fleury-Souverain S. Antineoplastic drugs and their analysis: a state of the art review. Analyst 2017; 142:2273-2321. [DOI: 10.1039/c7an00367f] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We provide an overview of the analytical methods available for the quantification of antineoplastic drugs in pharmaceutical formulations, biological and environmental samples.
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Affiliation(s)
- Nicolas Guichard
- Pharmacy
- Geneva University Hospitals (HUG)
- Geneva
- Switzerland
- School of Pharmaceutical Sciences
| | - Davy Guillarme
- School of Pharmaceutical Sciences
- University of Geneva
- University of Lausanne
- Geneva
- Switzerland
| | - Pascal Bonnabry
- Pharmacy
- Geneva University Hospitals (HUG)
- Geneva
- Switzerland
- School of Pharmaceutical Sciences
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Arsad SR, Maarof H, Wan Ibrahim WA, Aboul-Enein HY. Theoretical and Molecular Docking Study of Ketoconazole on Heptakis(2,3,6-tri-O
-methyl)-β-cyclodextrin as Chiral Selector. Chirality 2015; 28:209-14. [DOI: 10.1002/chir.22554] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 10/27/2015] [Accepted: 10/28/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Siti Rosilah Arsad
- Separation Science & Technology Group (SepSTec), Department of Chemistry, Faculty of Science; Universiti Teknologi Malaysia; 81310 UTM Johor Bahru, Johor Malaysia
| | - Hasmerya Maarof
- Separation Science & Technology Group (SepSTec), Department of Chemistry, Faculty of Science; Universiti Teknologi Malaysia; 81310 UTM Johor Bahru, Johor Malaysia
- Frontier Materials Research Alliance; Universiti Teknologi Malaysia; 81310 UTM Johor Bahru, Johor Malaysia
| | - Wan Aini Wan Ibrahim
- Separation Science & Technology Group (SepSTec), Department of Chemistry, Faculty of Science; Universiti Teknologi Malaysia; 81310 UTM Johor Bahru, Johor Malaysia
- Frontier Materials Research Alliance; Universiti Teknologi Malaysia; 81310 UTM Johor Bahru, Johor Malaysia
| | - Hassan Y. Aboul-Enein
- Department of Pharmaceutical and Medicinal Chemistry, Pharmaceutical and Drug Industries Research Division; National Research Centre; Dokki Giza Egypt
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MBUNA J, KANETA T. Capillary Electrophoresis with Laser-induced Fluorescence Detection for Application in Intracellular Investigation of Anthracyclines and Multidrug Resistance Proteins. ANAL SCI 2015; 31:1121-8. [DOI: 10.2116/analsci.31.1121] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Julius MBUNA
- Dar es Salaam University College of Education, Department of Chemistry
| | - Takashi KANETA
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University
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Wan Ibrahim WA, Arsad SR, Maarof H, Sanagi MM, Aboul-Enein HY. Chiral Separation of Four Stereoisomers of Ketoconazole Drugs Using Capillary Electrophoresis. Chirality 2014; 27:223-7. [DOI: 10.1002/chir.22416] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2014] [Revised: 10/21/2014] [Accepted: 10/27/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Wan Aini Wan Ibrahim
- Separation Science & Technology Group (SepSTec); Department of Chemistry, Faculty of Science; Sukdai, Johor Bahru Johor Malaysia
- Nanotechnology Research Alliance; Universiti Teknologi Malaysia; Sukdai, Johor Bahru Johor Malaysia
- Ibnu Sina Institute for Fundamental Science Studies; Universiti Teknologi Malaysia; Sukdai, Johor Bahru Johor Malaysia
| | - Siti Rosilah Arsad
- Separation Science & Technology Group (SepSTec); Department of Chemistry, Faculty of Science; Sukdai, Johor Bahru Johor Malaysia
- Nanotechnology Research Alliance; Universiti Teknologi Malaysia; Sukdai, Johor Bahru Johor Malaysia
- Ibnu Sina Institute for Fundamental Science Studies; Universiti Teknologi Malaysia; Sukdai, Johor Bahru Johor Malaysia
| | - Hasmerya Maarof
- Separation Science & Technology Group (SepSTec); Department of Chemistry, Faculty of Science; Sukdai, Johor Bahru Johor Malaysia
- Nanotechnology Research Alliance; Universiti Teknologi Malaysia; Sukdai, Johor Bahru Johor Malaysia
- Ibnu Sina Institute for Fundamental Science Studies; Universiti Teknologi Malaysia; Sukdai, Johor Bahru Johor Malaysia
| | - Mohd. Marsin Sanagi
- Separation Science & Technology Group (SepSTec); Department of Chemistry, Faculty of Science; Sukdai, Johor Bahru Johor Malaysia
- Nanotechnology Research Alliance; Universiti Teknologi Malaysia; Sukdai, Johor Bahru Johor Malaysia
- Ibnu Sina Institute for Fundamental Science Studies; Universiti Teknologi Malaysia; Sukdai, Johor Bahru Johor Malaysia
| | - Hassan Y. Aboul-Enein
- Department of Pharmaceutical and Medicinal Chemistry, Pharmaceutical and Drug Industries Research Division; National Research Centre; Dokki Cairo Egypt
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8
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Monitoring subcellular biotransformation of N-L-leucyldoxorubicin by micellar electrokinetic capillary chromatography coupled to laser-induced fluorescence detection. Anal Bioanal Chem 2014; 406:2389-97. [PMID: 24573576 DOI: 10.1007/s00216-014-7615-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2013] [Revised: 12/09/2013] [Accepted: 01/07/2014] [Indexed: 10/25/2022]
Abstract
Development of prodrugs is a promising alternative to address cytotoxicity and nonspecificity of common anticancer agents. N-L-leucyldoxorubicin (LeuDox) is a prodrug that is biotransformed to the anticancer drug doxorubicin (Dox) in the extracellular space; however, its biotransformation may also occur intracellularly in endocytic organelles. Such organelle-specific biotransformation is yet to be determined. In this study, magnetically enriched endocytic organelle fractions from human uterine sarcoma cells were treated with LeuDox. Micellar electrokinetic chromatography with laser-induced fluorescence detection (MEKC-LIF) was used to determine that 10% of LeuDox was biotransformed to Dox, accounting for ~43% of the biotransformation occurring in the post-nuclear fraction. This finding suggests that endocytic organelles also participate in the intracellular biotransformation of LeuDox to Dox.
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Yang X, Qian F, Xie L, Yang X, Cheng X, Choi MMF. Determination of doxorubicin in plasma by using CE coupled with in-column tapered optic-fiber light-emitting diode induced fluorescence detection. Electrophoresis 2013; 35:762-9. [PMID: 24114803 DOI: 10.1002/elps.201300237] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2013] [Revised: 09/04/2013] [Accepted: 09/15/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Xiupei Yang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province; College of Chemistry and Chemical Engineering, China West Normal University; Nanchong P. R. China
| | - Fan Qian
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province; College of Chemistry and Chemical Engineering, China West Normal University; Nanchong P. R. China
| | - Linxiang Xie
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province; College of Chemistry and Chemical Engineering, China West Normal University; Nanchong P. R. China
| | - Xiaocui Yang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province; College of Chemistry and Chemical Engineering, China West Normal University; Nanchong P. R. China
| | - Xiumei Cheng
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province; College of Chemistry and Chemical Engineering, China West Normal University; Nanchong P. R. China
| | - Martin M. F. Choi
- Department of Chemistry; Hong Kong Baptist University, Kowloon Tong; Hong Kong SAR P. R. China
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10
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Wan Ibrahim WA, Abd Wahib SM, Hermawan D, Sanagi MM, Aboul-Enein HY. Separation of Selected Imidazole Enantiomers Using Dual Cyclodextrin System in Micellar Electrokinetic Chromatography. Chirality 2013; 25:328-35. [DOI: 10.1002/chir.22156] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Revised: 12/28/2012] [Accepted: 01/04/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Wan Aini Wan Ibrahim
- Separation Science and Technology Group (SepSTec), Department of Chemistry, Faculty of Science; Universiti Teknologi Malaysia; 81310 UTM Johor Bahru Johor Malaysia
- Nanotechnology Research Alliance; Universiti Teknologi Malaysia; 81310 UTM Johor Bahru Johor Malaysia
| | - Siti Munirah Abd Wahib
- Separation Science and Technology Group (SepSTec), Department of Chemistry, Faculty of Science; Universiti Teknologi Malaysia; 81310 UTM Johor Bahru Johor Malaysia
| | - Dadan Hermawan
- Nanotechnology Research Alliance; Universiti Teknologi Malaysia; 81310 UTM Johor Bahru Johor Malaysia
- Ibnu Sina Institute for Fundamental Science Studies; Universiti Teknologi Malaysia; 81310 UTM Johor Bahru Johor Malaysia
| | - Mohd Marsin Sanagi
- Nanotechnology Research Alliance; Universiti Teknologi Malaysia; 81310 UTM Johor Bahru Johor Malaysia
- Ibnu Sina Institute for Fundamental Science Studies; Universiti Teknologi Malaysia; 81310 UTM Johor Bahru Johor Malaysia
| | - Hassan Y. Aboul-Enein
- Department of Pharmaceutical and Medicinal Chemistry, Pharmaceutical and Drug Industries Research Division, National Research Centre; Dokki Cairo 12311 Egypt
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Ibrahim WAW, Hermawan D, Sanagi MM. Cyclodextrin-modified micellar electrokinetic chromatography for enantioseparations. Methods Mol Biol 2013; 970:349-361. [PMID: 23283789 DOI: 10.1007/978-1-62703-263-6_22] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The separation of enantiomers is one of the important fields of modern analytical chemistry, especially for agrochemical and pharmaceutical products because the stereochemistry has a significant influence on the biological activities of compounds. Cyclodextrin-modified micellar electrokinetic chromatography (CD-MEKC) has become an important capillary electrophoresis mode for enantioseparations. Here, we describe an example of a CD-MEKC method using hydroxypropyl-γ-cyclodextrin as chiral selector and sodium dodecyl sulfate as micellar solution for enantioseparation of triazole fungicides and the drug econazole.
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Affiliation(s)
- Wan Aini Wan Ibrahim
- Separation Science and Technology Group (SepSTec), Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Johor, Malaysia.
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Xu J, Liu Y, Yu Y, Ni Q, Chen Y. Subcellular Quantification of Doxorubicin and Its Metabolite in Cultured Human Leukemia Cells Using Liquid Chromatography-Tandem Mass Spectrometry. ANAL LETT 2012. [DOI: 10.1080/00032719.2012.680056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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Analysis of anticancer drugs: a review. Talanta 2011; 85:2265-89. [PMID: 21962644 DOI: 10.1016/j.talanta.2011.08.034] [Citation(s) in RCA: 316] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Revised: 08/15/2011] [Accepted: 08/16/2011] [Indexed: 01/05/2023]
Abstract
In the last decades, the number of patients receiving chemotherapy has considerably increased. Given the toxicity of cytotoxic agents to humans (not only for patients but also for healthcare professionals), the development of reliable analytical methods to analyse these compounds became necessary. From the discovery of new substances to patient administration, all pharmaceutical fields are concerned with the analysis of cytotoxic drugs. In this review, the use of methods to analyse cytotoxic agents in various matrices, such as pharmaceutical formulations and biological and environmental samples, is discussed. Thus, an overview of reported analytical methods for the determination of the most commonly used anticancer drugs is given.
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14
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Analysis of doxorubicin uptake in single human leukemia K562 cells using capillary electrophoresis coupled with laser-induced fluorescence detection. Anal Bioanal Chem 2011; 401:2143-52. [DOI: 10.1007/s00216-011-5315-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2011] [Revised: 07/30/2011] [Accepted: 08/03/2011] [Indexed: 10/17/2022]
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15
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Wang Y, Katzenmeyer JB, Arriaga EA. Combination of micellar electrokinetic and high-performance liquid chromatographies to assess age-related changes in the in vitro metabolism of Fischer 344 rat liver. J Gerontol A Biol Sci Med Sci 2011; 66:935-43. [PMID: 21746738 DOI: 10.1093/gerona/glr074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The metabolism of doxorubicin, a widely used anticancer drug, is different in young adult and old cancer patients. In this study, we demonstrate that micellar electrokinetic chromatography with laser-induced fluorescence detection is highly suited to monitor the metabolism of doxorubicin in subcellular fractions isolated from young adult (11 months, 100% survival rate) and old (26 months, ~25% survival rate) Fischer 344 rat livers. The relative amounts of doxorubicin metabolized in both mitochondria-enriched and postmitochondria fractions of young adult were larger than the respective fractions of old rat liver. 7-Deoxydoxorubicinolone and 7-deoxydoxorubicinone were identified using internal standard addition and structural elucidation by high-performance liquid chromatography with combined laser-induced fluorescence and mass spectrometry detection. Although high-performance liquid chromatography with combined laser-induced fluorescence and mass spectrometry detection is more useful in the identification of compounds, micellar electrokinetic chromatography with laser-induced fluorescence detection has low-sample requirements, simplified sample processing procedures, short analysis times and low limit of detection. Therefore, the combination of these two techniques provides a powerful approach to investigate metabolism of fluorescent drugs in aging studies.
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Affiliation(s)
- Yaohua Wang
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455, USA
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Mbuna J, Kaneta T, Imasaka T. Measurement of intracellular accumulation of anthracyclines in cancerous cells by direct injection of cell lysate in MEKC/LIF detection. Electrophoresis 2010; 31:1396-404. [DOI: 10.1002/elps.200900659] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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17
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Rodat A, Couderc B, Feurer B, Couderc F. A new evaluation technique for the detection of impurities in purified proteins via CE with native UV-LIF. Electrophoresis 2010; 31:396-402. [DOI: 10.1002/elps.200900369] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Wang Y, Hong J, Cressman ENK, Arriaga EA. Direct sampling from human liver tissue cross sections for electrophoretic analysis of doxorubicin. Anal Chem 2009; 81:3321-8. [PMID: 19323500 DOI: 10.1021/ac802542e] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
After chemoembolization of the liver with doxorubicin (Dox), this drug and its metabolites are not homogeneously distributed in this organ. The distribution cannot be easily measured making it difficult to assess how the drug performs in different tissue regions. Here we report a technique for sampling tissue cross sections that can analyze the contents of micrometer size regions. The tissue cross sections were from the explanted liver of a hepatocellular carcinoma patient. Samples were directly aspirated from a 5 microm thick tissue cross section into a 50 microm i.d. capillary where the tissue was solubilized with a separation buffer containing sodium dodecyl sulfate. Upon sample dissolution, Dox and natively fluorescent compounds were separated and detected by micellar electrokinetic chromatography with laser-induced fluorescence detection. Sampling reproducibility and recovery were assessed using 10% (w/v) gelatin as tissue mimic. Sampling from gelatin slices containing Dox revealed a relative standard deviation of 13%, which was comparable to that of sampling from solution. Dox recovery was 82% +/- 16% (n = 5). When sampling tumor and nontumor tissue regions, samples could be taken from the same region 100 microm apart. Atomic force microscopy was used to determine that each sample was 8.4 +/- 1.0 pL in volume which made it possible to determine Dox concentrations in the ranges of 0.4-1.3 and 0.3-0.5 microM for the samples taken from tumor and nontumor regions, respectively. The results demonstrated the feasibility of sampling, detection, and quantification of Dox in micrometer size regions, which could be a useful resource for analyzing the Dox concentration and distribution in highly heterogeneous tissues.
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Affiliation(s)
- Yaohua Wang
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, USA
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19
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Silva M. Micellar electrokinetic chromatography: Methodological and instrumental advances focused on practical aspects. Electrophoresis 2009; 30:50-64. [DOI: 10.1002/elps.200800414] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Kostal V, Katzenmeyer J, Arriaga EA. Capillary electrophoresis in bioanalysis. Anal Chem 2008; 80:4533-50. [PMID: 18484738 DOI: 10.1021/ac8007384] [Citation(s) in RCA: 108] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Vratislav Kostal
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, USA
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Wang Y, Arriaga EA. Monitoring incorporation, transformation and subcellular distribution of N-l-leucyl-doxorubicin in uterine sarcoma cells using capillary electrophoretic techniques. Cancer Lett 2008; 262:123-32. [PMID: 18194838 DOI: 10.1016/j.canlet.2007.11.034] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2007] [Revised: 11/27/2007] [Accepted: 11/27/2007] [Indexed: 11/16/2022]
Abstract
Previous reports have demonstrated that N-l-leucyl-doxorubicin (LeuDox) is less toxic than its parent drug, Dox, but the underlying causes of this reduced toxicity have yet to be fully elucidated. In this study, the incorporation of LeuDox into (i) the MES-SA human uterine sarcoma cell line and (ii) its Dox resistant counterpart, MES-SA/Dx5 cell line and the subsequent transformation of LeuDox into Dox and its subcellular distribution, were investigated by micellar electrokinetic chromatography with laser-induced fluorescence detection (MEKC-LIF). In both cell lines the cellular uptakes of Dox and LeuDox were similar at equimolar doses, while the percent transformation of LeuDox into Dox in MES-SA/Dx5 cells was about twice as great as its transformation in MES-SA cells, which is beneficial for reaching Dox cytotoxic levels in this resistant cell line. When both cells lines were treated with IC(35) concentrations of either Dox and LeuDox, the intracellular Dox amounts were 6-fold higher in the resistant cell line than in the sensitive cell line, suggesting that other cellular processes play a role in the cytotoxicity of Dox in the resistant cell line. The amounts and ratios of Dox and LeuDox in four subcellular fractions of LeuDox-treated MES-SA/Dx5 cells were also investigated. The highest Dox/LeuDox ratio (i.e. 2.92) was found in the nuclear fraction, followed by the ratio in the low density organelle fraction (i.e. 1.92) that contains lysosomes, organelles in which lysosomal hydrolytic enzymes, capthesins, transform LeuDox into Dox.
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Affiliation(s)
- Yaohua Wang
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455, USA
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