1
|
Timoshen K, Khrebina A, Lebedev V, Loglio G, Miller R, Sedov V, Noskov B. Dynamic surface properties of carboxyfullerene solutions. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.121174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
2
|
Sharoyko VV, Iurev GO, Postnov VN, Meshcheriakov AA, Ageev SV, Ivanova DA, Petrov AV, Luttsev MD, Nashchekin AV, Iamalova NR, Vasina LV, Solovtsova IL, Murin IV, Semenov KN. Biocompatibility of a nanocomposite based on Aerosil 380 and carboxylated fullerene C 60[C(COOH) 2] 3. J Biotechnol 2021; 331:83-98. [PMID: 33727085 DOI: 10.1016/j.jbiotec.2021.03.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 03/09/2021] [Indexed: 11/29/2022]
Abstract
Silica is silicon dioxide, which, depending on the production method, can exist in various amorphous forms with varying specific surface area, particle size, pore volume and size, and, as a result, with different physicochemical and sorption characteristics. The presence of silanol groups on the surface of silicas provides the possibility of its further functionalisation. In addition, the developed specific surface of Aerosil allows to obtain composites with a high content of biologically active substances. In this work, we studied the biocompatibility of a composite based on Aerosil 380 and carboxylated fullerene C60[C(COOH)2]3, namely: haemolysis (spontaneous and photoinduced), platelet aggregation, binding to HSA, cyto- and genotoxicity, antiradical activity. Interest in the creation of this nanomaterial is due to the fact that carboxylated fullerenes have potential applications in various fields of biomedicine, including the ability to bind reactive oxygen species, inhibition of tumour development, inactivation of viruses and bacteria. The obtained composite can be used for the immobilisation of various drugs and the further development of drugs for theranostics.
Collapse
Affiliation(s)
- Vladimir V Sharoyko
- Pavlov First Saint Petersburg State Medical University, 6-8 L'va Tolstogo ulitsa, Saint Petersburg, 197022, Russia; Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii prospekt, Saint Petersburg, 198504, Russia; A. M. Granov Russian Research Centre for Radiology and Surgical Technologies, 70 Leningradskaya Ulitsa, Saint Petersburg, 197758, Russia.
| | - Gleb O Iurev
- Pavlov First Saint Petersburg State Medical University, 6-8 L'va Tolstogo ulitsa, Saint Petersburg, 197022, Russia; Almazov National Medical Research Centre, 2 Akkuratova ulitsa, Saint Petersburg, 197341, Russia
| | - Viktor N Postnov
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii prospekt, Saint Petersburg, 198504, Russia
| | - Anatolii A Meshcheriakov
- Pavlov First Saint Petersburg State Medical University, 6-8 L'va Tolstogo ulitsa, Saint Petersburg, 197022, Russia; Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii prospekt, Saint Petersburg, 198504, Russia
| | - Sergei V Ageev
- Pavlov First Saint Petersburg State Medical University, 6-8 L'va Tolstogo ulitsa, Saint Petersburg, 197022, Russia; Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii prospekt, Saint Petersburg, 198504, Russia
| | - Daria A Ivanova
- Pavlov First Saint Petersburg State Medical University, 6-8 L'va Tolstogo ulitsa, Saint Petersburg, 197022, Russia
| | - Andrey V Petrov
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii prospekt, Saint Petersburg, 198504, Russia
| | - Michail D Luttsev
- Pavlov First Saint Petersburg State Medical University, 6-8 L'va Tolstogo ulitsa, Saint Petersburg, 197022, Russia
| | - Alexei V Nashchekin
- Ioffe Institute, 26 Politekhnicheskaya ulitsa, Saint Petersburg, 194021, Russia
| | - Nailia R Iamalova
- Agrophysical Research Institute, 14 Grazhdanskii prospect, Saint Petersburg, 195220, Russia
| | - Lubov V Vasina
- Pavlov First Saint Petersburg State Medical University, 6-8 L'va Tolstogo ulitsa, Saint Petersburg, 197022, Russia
| | - Irina L Solovtsova
- Pavlov First Saint Petersburg State Medical University, 6-8 L'va Tolstogo ulitsa, Saint Petersburg, 197022, Russia
| | - Igor V Murin
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii prospekt, Saint Petersburg, 198504, Russia
| | - Konstantin N Semenov
- Pavlov First Saint Petersburg State Medical University, 6-8 L'va Tolstogo ulitsa, Saint Petersburg, 197022, Russia; Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii prospekt, Saint Petersburg, 198504, Russia; A. M. Granov Russian Research Centre for Radiology and Surgical Technologies, 70 Leningradskaya Ulitsa, Saint Petersburg, 197758, Russia.
| |
Collapse
|
3
|
|
4
|
Huang HJ, Wang YT, Lin HC, Lee YH, Lin AMY. Soluble Epoxide Hydrolase Inhibition Attenuates MPTP-Induced Neurotoxicity in the Nigrostriatal Dopaminergic System: Involvement of α-Synuclein Aggregation and ER Stress. Mol Neurobiol 2017; 55:138-144. [DOI: 10.1007/s12035-017-0726-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
5
|
Chen G, Song X, Wang B, You G, Zhao J, Xia S, Zhang Y, Zhao L, Zhou H. Carboxyfullerene nanoparticles alleviate acute hepatic injury in severe hemorrhagic shock. Biomaterials 2017; 112:72-81. [PMID: 27750099 DOI: 10.1016/j.biomaterials.2016.10.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 09/22/2016] [Accepted: 10/11/2016] [Indexed: 01/02/2023]
|
6
|
Hung KC, Huang HJ, Lin MW, Lei YP, Lin AMY. Roles of autophagy in MPP+-induced neurotoxicity in vivo: the involvement of mitochondria and α-synuclein aggregation. PLoS One 2014; 9:e91074. [PMID: 24646838 PMCID: PMC3960112 DOI: 10.1371/journal.pone.0091074] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Accepted: 02/07/2014] [Indexed: 12/18/2022] Open
Abstract
Macroautophagy (also known as autophagy) is an intracellular self-eating mechanism and has been proposed as both neuroprotective and neurodestructive in the central nervous system (CNS) neurodegenerative diseases. In the present study, the role of autophagy involving mitochondria and α-synuclein was investigated in MPP+ (1-methyl-4-phenylpyridinium)-induced oxidative injury in chloral hydrate-anesthetized rats in vivo. The oxidative mechanism underlying MPP+-induced neurotoxicity was identified by elevated lipid peroxidation and heme oxygenase-1 levels, a redox-regulated protein in MPP+-infused substantia nigra (SN). At the same time, MPP+ significantly increased LC3-II levels, a hallmark protein of autophagy. To block MPP+-induced autophagy in rat brain, Atg7siRNA was intranigrally infused 4 d prior to MPP+ infusion. Western blot assay showed that in vivo Atg7siRNA transfection not only reduced Atg7 levels in the MPP+-infused SN but attenuated MPP+-induced elevation in LC3-II levels, activation of caspase 9 and reduction in tyrosine hydroxylase levels, indicating that autophagy is pro-death. The immunostaining study demonstrated co-localization of LC3 and succinate dehydrogenase (a mitochondrial complex II) as well as LC3 and α-synuclein, suggesting that autophagy may engulf mitochondria and α-synuclein. Indeed, in vivo Atg7siRNA transfection mitigated MPP+-induced reduction in cytochrome c oxidase. In addition, MPP+-induced autophagy differentially altered the α-synuclein aggregates in the infused SN. In conclusion, autophagy plays a prodeath role in the MPP+-induced oxidative injury by sequestering mitochondria in the rat brain. Moreover, our data suggest that the benefits of autophagy depend on the levels of α-synuclein aggregates in the nigrostriatal dopaminergic system of the rat brain.
Collapse
Affiliation(s)
- Kai-Chih Hung
- Department of Physiology, National Yang-Ming University, Taipei, Taiwan
| | - Hui-Ju Huang
- Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Ming-Wei Lin
- Institute of Public Health, National Yang-Ming University, Taipei, Taiwan
| | - Yen-Ping Lei
- Department of Nursing, National Yang-Ming University, Taipei, Taiwan
| | - Anya Maan-yuh Lin
- Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan
- Department of Pharmacology, National Yang-Ming University, Taipei, Taiwan
- * E-mail:
| |
Collapse
|
7
|
Abstract
During the last decade, various functional nanostructured materials with interesting optical, magnetic, mechanical and chemical properties have been extensively applied to biomedical areas including imaging, diagnosis and therapy. In therapeutics, most research has focused on the application of nanoparticles as potential delivery vehicles for drugs and genes, because nanoparticles in the size range of 2-100 nm can interact with biological systems at the molecular level, and allow targeted delivery and passage through biological barriers. Recent investigations have even revealed that several kinds of nanomaterials are intrinsically therapeutic. Not only can they passively interact with cells, but they can also actively mediate molecular processes to regulate cell functions. This can be seen in the treatment of cancer via anti-angiogenic mechanisms as well as the treatment of neurodegenerative diseases by effectively controlling oxidative stress. This review will present recent applications of inorganic nanoparticles as therapeutic agents in the treatment of disease.
Collapse
Affiliation(s)
- Taeho Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 151-742, Korea. School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Korea
| | | |
Collapse
|
8
|
Geraniol ameliorates the motor behavior and neurotrophic factors inadequacy in MPTP-induced mice model of Parkinson's disease. J Mol Neurosci 2013; 51:851-62. [PMID: 23943375 PMCID: PMC3824202 DOI: 10.1007/s12031-013-0074-9] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2013] [Accepted: 07/11/2013] [Indexed: 11/01/2022]
Abstract
Many experiments affirm the notion that augmentation of neurotrophic factors (NTFs) activity, especially brain-derived neurotrophic factors and glial cell-derived neurotrophic factors, could prevent or halt the progress of neurodegeneration in Parkinson's disease (PD). In this study, we investigated the therapeutic accomplishment of geraniol (GE 100 mg/kg) on 1-methyl-4-phenyl-1, 2, 3, 6-tetrahydropyridine (MPTP)-induced mice model of PD. Current investigation proved that pretreatment with GE ameliorates the MPTP-induced alterations in behavioral, biochemical, immunohistochemical, and immunoblotting manifestations in mice. Systematically, the loss of dopaminergic neurons and reduced NTFs mRNA expressions induced by MPTP was ameliorated to a significant extent by pretreatment with GE. We found that GE confers a potent neuroprotective agent against MPTP-induced dopaminergic denervation and may become a potential therapeutic agent for PD and/or its progression.
Collapse
|
9
|
Cui J, Yang Y, Cheng Y, Gao F, Liu C, Zhou C, Cheng Y, Li B, Cai J. Protective effects of carboxyfullerene in irradiated cells and BALB/c mice. Free Radic Res 2013; 47:301-8. [DOI: 10.3109/10715762.2013.771397] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
10
|
Lin AMY, Wu LY, Hung KC, Huang HJ, Lei YP, Lu WC, Hwang LS. Neuroprotective effects of longan ( Dimocarpus longan Lour.) flower water extract on MPP+-induced neurotoxicity in rat brain. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:9188-9194. [PMID: 22920583 DOI: 10.1021/jf302792t] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
In this study, the neuroprotective effect of Dimocarpus longan Lour. flower water extract (LFWE) was investigated. First, an in vitro study showed that LFWE concentration-dependently inhibited lipid peroxidation of brain homogenates incubated at 37 °C. The antioxidative activity of LFWE was more potent than that of glutathione or Trolox. Furthermore, an ex vivo study found that the basal lipid peroxidation (0 °C) and lipid peroxidation incubated at 37 °C were lower in the brain homogenates of LFWE-treated (500 mg/day) rats, indicating that the brain of LFWE-treated rats was more resistant to oxidative stress. Moreover, a Parkinsonian animal model was employed to demonstrate that oral administration of LFWE (125-500 mg/kg/day) dose-dependently attenuated 1-methyl-4-phenylpyridinium (MPP(+))-induced neurotoxicity in the nigrostriatal dopaminergic system of rat brain. In conclusion, this study suggests that LFWE is antioxidative, anti-inflammatory, and anti-apoptotic. Furthermore, oral administration of LFWE appears to be useful in preventing and/or treating central nervous system neurodegenerative diseases, including Parkinsonism.
Collapse
Affiliation(s)
- Anya Maan-Yuh Lin
- Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan.
| | | | | | | | | | | | | |
Collapse
|
11
|
Anandhan A, Janakiraman U, Manivasagam T. Theaflavin ameliorates behavioral deficits, biochemical indices and monoamine transporters expression against subacute 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced mouse model of Parkinson's disease. Neuroscience 2012; 218:257-67. [PMID: 22634505 DOI: 10.1016/j.neuroscience.2012.05.039] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2011] [Revised: 04/28/2012] [Accepted: 05/15/2012] [Indexed: 12/27/2022]
Abstract
Evidence from clinical and experimental studies indicates that degeneration of nigrostriatal dopaminergic neurons is a pathological hallmark of Parkinson's disease (PD). The present study was designed to investigate the neuroprotective potential of theaflavin (TF) on oxidative stress, monoamine transporters and behavioral abnormalities in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced neurodegeneration. TF, a black tea polyphenol, has been known to possess neuroprotective effects against ischemia, Alzheimer's disease and other neurodegenerative disorders, but the mechanisms underlying its beneficial effects on MPTP-induced dopaminergic neurodegeneration are poorly defined. Administration of MPTP (30 mg/kg bw for four consecutive days) led to increased oxidative stress and reduced behavior patterns (open field, rotarod and hang test), nigrostriatal dopamine transporter (DAT) (immunohistochemistry and Western blot) and vesicular monoamine transporter 2 (VMAT2) (Western blot) expressions. Pre-treatment with TF reduces oxidative stress, improves motor behavior and expression of DAT and VMAT2 in striatum and substantia nigra. These results indicate that TF might be beneficial in mitigating MPTP-induced damage of dopaminergic neurons, possibly via its neuroprotective and its antioxidant potential.
Collapse
Affiliation(s)
- A Anandhan
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India
| | | | | |
Collapse
|
12
|
Beuerle F, Witte P, Hartnagel U, Lebovitz R, Parng C, Hirsch A. Cytoprotective Activities of Water-Soluble Fullerenes in Zebrafish Models. Zebrafish 2011. [DOI: 10.1002/9781118102138.ch19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
|
13
|
|
14
|
Chan KC, Veenstra TD, Issaq HJ. Quantitation of nanoparticles in serum matrix by capillary electrophoresis. Methods Mol Biol 2011; 697:145-153. [PMID: 21116963 DOI: 10.1007/978-1-60327-198-1_15] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Sensitive and fast analytical techniques are needed to determine the concentration of nanoparticles in biological samples (e.g., blood and tissues) for biodistribution and toxicity studies. This chapter describes a method for the use of capillary zone electrophoresis (CZE) and micellar electrokinetic chromatography (MEKC) for the quantitation of fullerene nanoparticles in human serum matrix. Data on the fullerene-based nanoparticle carboxyfullerene (C3 fullerene) in human serum is presented as an example.
Collapse
Affiliation(s)
- King C Chan
- Laboratory of Proteomics and Analytical Technologies, Advanced Technology Program, SAIC-Frederick, Inc., National Cancer Institute at Frederick, Frederick, MD, USA
| | | | | |
Collapse
|
15
|
Giust D, Albasanz JL, Martín M, Marega R, Delforge A, Bonifazi D. [60]Fullerene-based monolayers as neuroprotective biocompatible hybrid materials. Chem Commun (Camb) 2011; 47:10617-9. [DOI: 10.1039/c1cc13971a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
16
|
Karakoti A, Singh S, Dowding JM, Seal S, Self WT. Redox-active radical scavenging nanomaterials. Chem Soc Rev 2010; 39:4422-32. [DOI: 10.1039/b919677n] [Citation(s) in RCA: 397] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
17
|
Basso AS, Frenkel D, Quintana FJ, Costa-Pinto FA, Petrovic-Stojkovic S, Puckett L, Monsonego A, Bar-Shir A, Engel Y, Gozin M, Weiner HL. Reversal of axonal loss and disability in a mouse model of progressive multiple sclerosis. J Clin Invest 2008; 118:1532-43. [PMID: 18340379 DOI: 10.1172/jci33464] [Citation(s) in RCA: 157] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2007] [Accepted: 01/30/2008] [Indexed: 11/17/2022] Open
Abstract
Axonal degeneration is an important determinant of progressive neurological disability in multiple sclerosis (MS). Thus, therapeutic approaches promoting neuroprotection could aid the treatment of progressive MS. Here, we used what we believe is a novel water-soluble fullerene derivative (ABS-75) attached to an NMDA receptor antagonist, which combines antioxidant and anti-excitotoxic properties, to block axonal damage and reduce disease progression in a chronic progressive EAE model. Fullerene ABS-75 treatment initiated after disease onset reduced the clinical progression of chronic EAE in NOD mice immunized with myelin-oligodendrocyte glycoprotein (MOG). Reduced disease progression in ABS-75-treated mice was associated with reduced axonal loss and demyelination in the spinal cord. Fullerene ABS-75 halted oxidative injury, CD11b+ infiltration, and CCL2 expression in the spinal cord of mice without interfering with antigen-specific T cell responses. In vitro, fullerene ABS-75 protected neurons from oxidative and glutamate-induced injury and restored glutamine synthetase and glutamate transporter expression in astrocytes under inflammatory insult. Glutamine synthetase expression was also increased in the white matter of fullerene ABS-75-treated animals. Our data demonstrate the neuroprotective effect of treatment with a fullerene compound combined with a NMDA receptor antagonist, which may be useful in the treatment of progressive MS and other neurodegenerative diseases.
Collapse
Affiliation(s)
- Alexandre S Basso
- Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Witte P, Beuerle F, Hartnagel U, Lebovitz R, Savouchkina A, Sali S, Guldi D, Chronakis N, Hirsch A. Water solubility, antioxidant activity and cytochrome C binding of four families of exohedral adducts of C60 and C70. Org Biomol Chem 2007; 5:3599-613. [PMID: 17971989 DOI: 10.1039/b711912g] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Over the past decade, surface-modified, water soluble fullerenes have been shown by many different investigators to exhibit strong antioxidant activity against reactive oxygen species (ROS) in vitro and to protect cells and tissues from oxidative injury and cell death in vivo. Nevertheless, progress in developing fullerenes as bona fide drug candidates has been hampered by three development issues: 1) lack of methods for scalable synthesis; 2) inability to produce highly purified, single-species regioisomers compatible with pharmaceutical applications; and 3) inadequate understanding of structure-function relationships with respect to various surface modifications (e.g., anionic versus cationic versus charge-neutral polarity). To address these challenges, we have designed and synthesized more than a dozen novel water soluble fullerenes that can be purified as single isomers and which we believe can be manufactured to scale at reasonable cost. These compounds differ in addition pattern, lipophilicity and number and type of charge and were examined for their water solubility, antioxidant activity against superoxide anions and binding of cytochrome C. Our results indicate that dendritic water soluble fullerene[60] monoadducts exhibit the highest degree of antioxidant activity against superoxide anions in vitro as compared with trismalonate-derived anionic fullerenes as well as cationic fullerenes of similar overall structure. Among the higher adducts, anionic derivatives have a higher antioxidant activity than comparable cationic compounds. To achieve sufficient water solubility without the aid of a surfactant or co-solvent at least three charges on the addends are required. Significantly, anionic in contrast to cationic fullerene adducts bind with high affinity to cytochrome C.
Collapse
Affiliation(s)
- Patrick Witte
- The Institut für Organische Chemie, Universität Erlangen-Nürnberg, Henkestrasse 42, Erlangen, Germany
| | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Chan KC, Patri AK, Veenstra TD, McNeil SE, Issaq HJ. Analysis of fullerene-based nanomaterial in serum matrix by CE. Electrophoresis 2007; 28:1518-24. [PMID: 17447247 DOI: 10.1002/elps.200600724] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
With the increasing interest in using nanoparticles as vehicles for drug delivery and image contrast agents, there is a need to develop assays for their detection and quantitation in complex matrices to facilitate monitoring their biodistribution. In this study, we developed a CE approach for the analysis of two nanoparticles: carboxyfullerene (C3) and dendrofullerene (DF1) in both standard solutions and a serum matrix. These highly soluble, charged C(60) derivatives were characterized by CZE using either a bare or dynamically coated fused-silica capillaries. The resolution of both nanoparticles was slightly lower with the coated capillary; however, their migration times were faster. While separation of the DF1 nanoparticles using MEKC resulted in a greater number of observable peaks, the peak profile of C3 was basically unchanged regardless of whether SDS micelles were added to the running buffers or not. The MEKC and/or CZE assays were then used to quantitate the C3 and DF1 nanoparticles in spiked human serum samples. The quantitation of the nanoparticles was linear from 0-500 microg/mL with detection limits ranging from 0.5 to 6 microg/mL.
Collapse
Affiliation(s)
- King C Chan
- Laboratory of Proteomics and Analytical Technologies, SAIC-Frederick Inc, NCI-Frederick, Frederick, MD 21702, USA.
| | | | | | | | | |
Collapse
|
20
|
Banerjee R, Sreetama S, Saravanan KS, Dey SN, Mohanakumar KP. Apoptotic Mode of Cell Death in Substantia Nigra Following Intranigral Infusion of the Parkinsonian Neurotoxin, MPP+ in Sprague-Dawley Rats: Cellular, Molecular and Ultrastructural Evidences. Neurochem Res 2007; 32:1238-47. [PMID: 17401660 DOI: 10.1007/s11064-007-9299-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2006] [Accepted: 01/30/2007] [Indexed: 02/03/2023]
Abstract
The potent parkinsonian neurotoxin 1-methyl-4-phenyl-1, 2, 3, 6-tetrahydropyridine (MPTP) is known to cause dopaminergic neurodegeneration in nigrostriatal system. In the present study we investigated the nuclear morphology of cells in the substantia nigra pars compacta (SNpc) region of rats following unilateral intranigral infusion of the active metabolite, 1-methyl-4-phenyl pyridinium ion (MPP(+)), which resulted in a dose-dependent and prolonged dopamine depletion in the ipsilateral striatum. There appeared a substantial loss of tyrosine hydroxylase immunoreactive neurons in the SNpc that received the neurotoxin. Specific nuclear staining with Hoechst 33342 or acridine orange revealed bright pyknotic, shrunken, distorted nuclei and condensed chromatin with perinuclear nucleolus respectively following visualization with the former and latter dyes in the ipsilateral SNpc, as compared to the round, intact nuclei and centrally positioned nucleolus in the contralateral side. Ultrastructural details of the nucleus under transmission electron microscope confirmed distorted nuclear organization with shrunken or condensed nuclei and disrupted nuclear membrane. These features are typical of nucleus undergoing apoptosis, and suggest that MPP(+) causes dopaminergic neuronal death through an apoptotic mode. Typical laddering pattern of genomic DNA isolated from the ipsilateral SN in agarose gel electrophoresis conclusively established apoptosis following intranigral administration of MPP(+) in rats.
Collapse
Affiliation(s)
- Rebecca Banerjee
- Division of Cell Biology and Physiology, Laboratory of Clinical and Experimental Neuroscience, Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata, 700 032, India
| | | | | | | | | |
Collapse
|
21
|
Lehmensiek V, Tan EM, Liebau S, Lenk T, Zettlmeisl H, Schwarz J, Storch A. Dopamine transporter-mediated cytotoxicity of 6-hydroxydopamine in vitro depends on expression of mutant alpha-synucleins related to Parkinson's disease. Neurochem Int 2006; 48:329-40. [PMID: 16406146 DOI: 10.1016/j.neuint.2005.11.008] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2005] [Revised: 10/27/2005] [Accepted: 11/08/2005] [Indexed: 11/18/2022]
Abstract
6-Hydroxydopamine (6-OHDA) is widely used to produce animal models of Parkinson's disease (PD) by selectively destroying the nigro-striatal dopaminergic systems, but selective toxicity of 6-OHDA towards dopaminergic cells in vitro remains controversial. Mutant (A30P and A53T) alpha-synuclein isoforms cause increased vulnerability of cells towards various toxic insults and enhance dopamine transporter (DAT)-mediated toxicity of the selective dopaminergic neurotoxin and mitochondrial complex I inhibitor MPP(+) in vitro. Here we extend our recent studies on DAT-mediated toxicity to elucidate the mechanisms involved in selective dopaminergic toxicity of 6-OHDA. We studied the cytotoxicity as well as the toxic mechanisms of 6-OHDA in human embryonic kidney HEK-293 cells ectopically co-expressing mutant alpha-synucleins and the human DAT protein. 6-OHDA showed half-maximal toxic concentration (TC(50)) of 88 microM in HEK-hDAT cells without alpha-synuclein expression after 24 h, whereas the TC(50) values significantly decreased to 58 and 39 microM by expression of A30P and A53T alpha-synuclein, respectively. alpha-Synuclein expression did not affect 6-OHDA toxicity in HEK-293 cells not expressing the DAT. Analysis of intracellular parameters of cellular energy metabolism revealed that the co-expression of mutant alpha-synucleins in HEK-hDAT cells accelerates the reduction of intracellular net ATP levels and ATP/ADP ratios induced by 6-OHDA. Uptake function of the DAT was not altered by expression of alpha-synuclein isoforms. Our data suggest a mechanism of 6-OHDA-induced dopaminergic toxicity involving an interaction of mutant alpha-synucleins with the DAT molecule and subsequent acceleration of cellular energy depletion that might be relevant for the pathogenesis of PD.
Collapse
|