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Macedo LDO, Morales IA, Barbosa EJ, Stephano MA, de Araujo GL, Bou-Chacra NA. Thermal study, process optimization, and water solubility improvement of a freeze-dried artemether nanosuspension for malaria treatment. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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He WS, Li L, Wang H, Rui J, Cui D. Synthesis and cholesterol-reducing potential of water-soluble phytosterol derivative. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.103428] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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Ruiz-Moreno C, Jimenez-Del-Rio M, Sierra-Garcia L, Lopez-Osorio B, Velez-Pardo C. Vitamin E synthetic derivate-TPGS-selectively induces apoptosis in jurkat t cells via oxidative stress signaling pathways: implications for acute lymphoblastic leukemia. Apoptosis 2018; 21:1019-32. [PMID: 27364951 DOI: 10.1007/s10495-016-1266-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
D-α-tocopheryl polyethylene glycol 1000 succinate (TPGS) is a water-soluble derivative of natural vitamin E commonly used as a drug delivery agent. Recently, TPGS alone has been reported to induce cell death in lung, breast and prostate cancer. However, the effect of TPGS on cancer cell viability remains unclear. Thus, this study was aimed to evaluate the cytotoxic effect of TPGS on human periphral blood lymphocytes (PBL) and on T cell acute lymphocytic leukemia (ALL) Jurkat clone E6-1 cells and its possible mechanism of action. PBL and Jurkat cells were treated with TPGS (10, 20, 40, 60, and 80 μM), and morphological changes in the cell nucleus, mitochondrial membrane potential (ΔΨm), and intracellular reactive oxygen species levels were determined by immune-fluorescence microscopy and flow cytometry. Cellular apoptosis markers were also evaluated by immunocytochemistry. In this study, TPGS induced apoptotic cell death in Jurkat cells, but not in PBL, in a dose-response manner with increasing nuclear DNA fragmentation, increasing cell cycle arrest, and decreasing ΔΨm. Additionally, TPGS increased dichlorofluorescein fluorescence intensity, indicative of H2O2 production, in a dose-independent fashion. TPGS increased DJ-1 Cys(106)-sulfonate, as a marker of intracellular stress and induced the activation of NF-κB, p53 and c-Jun transcription factors. Additionally, it increased the expression of apoptotic markers Bcl-2 related pro-apoptotic proteins Bax and PUMAand activated caspase-3. The antioxidant N-acetyl-L-cysteine and known pharmacological inhibitors protected the cells from the TPGS induced effects. In conclusion, TPGS selectively induces apoptosis in Jurkat cells through two independent but complementary H2O2-mediated signaling pathways. Our findings support the use of TPGS as a potential treatment for ALL.
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Affiliation(s)
- Cristian Ruiz-Moreno
- Neuroscience Research Group, Faculty of Medicine, Medical Research Institute, University of Antioquia, Calle 70 N° 52-21, and Calle 62 #52-59, Building 1, Room 412, SIU, P. O. Box 1226, Medellín, Colombia
| | - Marlene Jimenez-Del-Rio
- Neuroscience Research Group, Faculty of Medicine, Medical Research Institute, University of Antioquia, Calle 70 N° 52-21, and Calle 62 #52-59, Building 1, Room 412, SIU, P. O. Box 1226, Medellín, Colombia
| | - Ligia Sierra-Garcia
- Material Science Group, Faculty of Chemistry, University of Antioquia, Calle 70 N° 52-21, and Calle 62 #52-59, Building 1, Room 310, SIU, P. O. Box 1226, Medellin, Colombia
| | - Betty Lopez-Osorio
- Material Science Group, Faculty of Chemistry, University of Antioquia, Calle 70 N° 52-21, and Calle 62 #52-59, Building 1, Room 310, SIU, P. O. Box 1226, Medellin, Colombia
| | - Carlos Velez-Pardo
- Neuroscience Research Group, Faculty of Medicine, Medical Research Institute, University of Antioquia, Calle 70 N° 52-21, and Calle 62 #52-59, Building 1, Room 412, SIU, P. O. Box 1226, Medellín, Colombia.
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Plohl O, Kralj S, Majaron B, Fröhlich E, Ponikvar-Svet M, Makovec D, Lisjak D. Amphiphilic coatings for the protection of upconverting nanoparticles against dissolution in aqueous media. Dalton Trans 2017; 46:6975-6984. [DOI: 10.1039/c7dt00529f] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Dissolution of upconverting nanoparticles (β-NaYF4:Yb3+,Tm3+) in PBS was efficiently suppressed by a polymer coating, PMAO cross-linked with BHMT.
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Affiliation(s)
- Olivija Plohl
- Jožef Stefan Institute
- Department for Materials Synthesis
- 1000 Ljubljana
- Slovenia
- Jožef Stefan International Postgraduate School
| | - Slavko Kralj
- Jožef Stefan Institute
- Department for Materials Synthesis
- 1000 Ljubljana
- Slovenia
| | - Boris Majaron
- Jožef Stefan Institute
- Department for Complex Matter
- 1000 Ljubljana
- Slovenia
- Medical University of Graz
| | - Eleonore Fröhlich
- University of Ljubljana
- Faculty of Mathematics and Phyisics
- 1000 Ljubljana
- Slovenia
| | - Maja Ponikvar-Svet
- Jožef Stefan Institute
- Department of Inorganic Chemistry and Technology
- 1000 Ljubljana
- Slovenia
| | - Darko Makovec
- Jožef Stefan Institute
- Department for Materials Synthesis
- 1000 Ljubljana
- Slovenia
| | - Darja Lisjak
- Jožef Stefan Institute
- Department for Materials Synthesis
- 1000 Ljubljana
- Slovenia
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Qi Y, Volmer DA. Structural analysis of small to medium-sized molecules by mass spectrometry after electron-ion fragmentation (ExD) reactions. Analyst 2016; 141:794-806. [PMID: 26725919 DOI: 10.1039/c5an02171e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electron capture dissociation (ECD) is a tandem mass spectrometry (MS/MS) method that utilizes the interaction of ions and electrons. Its unique ability to preserve labile bonds distinguishes it from conventional threshold-based MS/MS methods, the most important of which is collision-induced dissociation (CID). During the last decade, ECD has opened up several new venues in protein analyses, for example top-down sequencing, identification of post-translational modifications, and characterization of protein-protein interactions. In recent years, a number of related dissociation techniques, so-called ExD techniques, particularly electron transfer dissociation (ETD), electron detachment dissociation (EDD), electron induced dissociation (EID), and negative electron transfer dissociation (NETD), have emerged and have extended the application range of ion-electron dissociations further. Importantly, ExD techniques have been applied beyond protein analyses, which is the focus of the current paper. This short introduction describes the application of ExD to small and medium-sized molecules and reviews important applications to natural products, biomedical compounds, synthetic molecules, crude oils, and environmental toxins.
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Affiliation(s)
- Yulin Qi
- Institute of Bioanalytical Chemistry, Saarland University, 66123 Saarbrücken, Germany.
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Kong L, Zhang Z, Xing H, Yang Q, Su B, Bao Z, Yang Y, Ren Q. Adsorption behavior of α-tocopheryl succinate and α-tocopheryl polyethylene glycol succinate onto weakly basic anion exchange resins. KOREAN J CHEM ENG 2014. [DOI: 10.1007/s11814-014-0259-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Wei J, Bristow A, McBride E, Kilgour D, O’Connor PB. d-α-tocopheryl Polyethylene Glycol 1000 Succinate: A View from FTICR MS and Tandem MS. Anal Chem 2014; 86:1567-74. [DOI: 10.1021/ac403195f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Juan Wei
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| | | | | | - David Kilgour
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Peter B. O’Connor
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
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Mosquera-Giraldo LI, Trasi NS, Taylor LS. Impact of surfactants on the crystal growth of amorphous celecoxib. Int J Pharm 2014; 461:251-7. [DOI: 10.1016/j.ijpharm.2013.11.057] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Revised: 11/06/2013] [Accepted: 11/30/2013] [Indexed: 11/26/2022]
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Kong LY, Su BG, Bao ZB, Xing HB, Yang YW, Ren QL. Direct quantification of mono- and di-D-α-tocopherol polyethylene glycol 1000 succinate by high performance liquid chromatography. J Chromatogr A 2011; 1218:8664-71. [PMID: 22035696 DOI: 10.1016/j.chroma.2011.10.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Revised: 09/25/2011] [Accepted: 10/07/2011] [Indexed: 11/24/2022]
Abstract
A simple and direct reversed-phase high performance liquid chromatography (RP-HPLC) method with UV detection was developed and validated for the determination of mono- and di-D-α-tocopherol polyethylene glycol 1000 succinate (TPGS 1000) in TPGS mixture. Before the HPLC analysis, mono- and di-TPGS 1000 were separated by simulated moving bed (SMB) chromatography system and characterized by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). The mass spectrometric results confirmed that the molar mass distribution of TPGS prepared in our laboratory was very close to that of the product of Eastman Chemical Company with similar n¯ (average polymerization degree), M(n)¯ (number-average molecular weight) and M(w)¯ (weight-average molecular weight). The HPLC analysis was carried out on a C30 analytical column with mobile phases comprised of acetonitrile (A) and isopropanol (B) in gradient conditions. Validation of the analytical method was done on the following parameters: system suitability, linearity, limits of detection and quantification, accuracy and precision, method robustness and solution stability. The linearity of the calibration curves for mono- and di-TPGS 1000 from both sources was found to be good (r(2)>0.9996). The recovery values were from 94.6% to 103.3% for mono-TPGS, and 93.5% to 103.3% for di-TPGS. This method could be successfully used in the direct quantification of mono- and di-TPGS in TPGS 1000 mixture using TPGS standards with similar molecular mass distributions although derived from different sources.
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Affiliation(s)
- L Y Kong
- Department of Chemical and Biological Engineering, Institute of Pharmaceutical Engineering, Zhejiang University, Hangzhou, China
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