76
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Skorkina MY, Sladkova EA, Shamray EA, Cherkashina OV, Evstigneev MP, Buchelnikov AS, Prylutskyy YI, Ritter U. C60 fullerene affects elastic properties and osmoregulation reactions of human lymphocytes. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2015; 44:493-8. [PMID: 26071689 DOI: 10.1007/s00249-015-1050-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 05/16/2015] [Accepted: 05/25/2015] [Indexed: 11/25/2022]
Abstract
The influence of aqueous solution of pristine C60 fullerene (C60FAS) on functional activity of lymphocytes from a healthy person was studied for the first time. By means of atomic force microscopy, it was found that C60FAS in a concentration of 0.1 mg/ml increases the stiffness of the lymphocyte membrane by 41% (p < 0.05) and lowers the functional activity of the plasmalemma surface, thereby constraining the use of its membrane material in physiological reactions using a hypotonic model in vitro. However, a cell retains the ability to regulate its volume and demonstrates relative resistance to hypo-osmotic stress. The resistance of lymphocytes in hypo-osmotic medium is facilitated by activation of the nucleus by C60 fullerene particles, which regulates the implementation of two consistent phases of an increase and decrease of cell volume, thereby retaining cell viability. All these indicate the impact of C60 fullerene on the cellular nucleus.
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77
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Afanasieva KS, Prylutska SV, Lozovik AV, Bogutska KI, Sivolob AV, Prylutskyy YI, Ritter U, Scharff P. C60 fullerene prevents genotoxic effects of doxorubicin in human lymphocytes in vitro. UKRAINIAN BIOCHEMICAL JOURNAL 2015; 87:91-98. [PMID: 26036135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
The self-ordering of C60 fullerene, doxorubicin and their mixture precipitated from aqueous solutions was investigated using atomic-force microscopy. The results suggest the complexation between the two compounds. The genotoxicity of doxorubicin in complex with C60 fullerene (C 60+Dox) was evaluated in vitro with comet assay using human lymphocytes. The obtained results show that the C60 fullerene prevents the toxic effect of Dox in normal cells and, thus, C60+Dox complex might be proposed for biomedical application.
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78
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Tsierkezos NG, Ritter U, Thaha YN, Downing C, Szroeder P. Synthesis, characterization, and electrochemical application of phosphorus-doped multi-walled carbon nanotubes. J Solid State Electrochem 2014. [DOI: 10.1007/s10008-014-2696-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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79
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Voronin DP, Buchelnikov AS, Kostjukov VV, Khrapatiy SV, Wyrzykowski D, Piosik J, Prylutskyy YI, Ritter U, Evstigneev MP. Evidence of entropically driven C60 fullerene aggregation in aqueous solution. J Chem Phys 2014; 140:104909. [PMID: 24628207 DOI: 10.1063/1.4867902] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In the present work, we report the first experimental evidence of entropically driven C60 fullerene aggregation in aqueous solution, occurring with nearly zero enthalpy change.
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80
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Turkovic V, Engmann S, Tsierkezos N, Hoppe H, Ritter U, Gobsch G. Long-term stabilization of organic solar cells using hindered phenols as additives. ACS APPLIED MATERIALS & INTERFACES 2014; 6:18525-18537. [PMID: 25279719 DOI: 10.1021/am5024989] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We report on the improvement of long-term stability of organic solar cells (OPV) using hindered phenol based antioxidants as stabilizing additives. A set of seven commercially available hindered phenols are investigated for use in bulk-heterojunction OPV. Polymer:fullerene films based on poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) are characterized with respect to the initial power conversion efficiency and the long-term stability improvement under illumination in ambient conditions. FTIR spectroscopy is used to trace chemical degradation over time. OPV performance is recorded under ISOS-3 conditions, and an improved long-term performance of OPV devices, manifested in increased accumulated power generation (APG), is found for octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate. Using this additive, APG is increased by a factor of 3 compared to the reference. Observed differences in the stabilization of tested additives are discussed in terms of energetic trap states formation within the HOMO/LUMO gap of the photoactive material, morphological changes, and chemical structure.
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81
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Zimara N, Florian C, Schmid M, Malissen B, Kissenpfennig A, Männel DN, Edinger M, Hutchinson JA, Hoffmann P, Ritter U. Langerhans cells promote early germinal center formation in response toLeishmania-derived cutaneous antigens. Eur J Immunol 2014; 44:2955-67. [DOI: 10.1002/eji.201344263] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 05/30/2014] [Accepted: 07/25/2014] [Indexed: 12/27/2022]
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82
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Prylutska SV, Didenko GV, Potebnya GP, Bogutska KI, Prylutskyy YI, Ritter U, Scharff P. Toxic effect of C60 fullerene-doxorubicin complex towards tumor and normal cells in vitro. ACTA ACUST UNITED AC 2014. [DOI: 10.7124/bc.0008b4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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83
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Schmid M, Zimara N, Wege AK, Ritter U. Myeloid-derived suppressor cell functionality and interaction withLeishmania majorparasites differ in C57BL/6 and BALB/c mice. Eur J Immunol 2014; 44:3295-306. [DOI: 10.1002/eji.201344335] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 06/27/2014] [Accepted: 08/13/2014] [Indexed: 01/20/2023]
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84
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Tsierkezos NG, Ritter U, Wetzold N, Hübler AC. Disposable Multiwalled Carbon Nanotube Printed Film Electrochemical Determination of Acetaminophen, Dopamine, and Uric Acid. ANAL LETT 2014. [DOI: 10.1080/00032719.2014.926553] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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85
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Managh AJ, Hutchinson RW, Riquelme P, Broichhausen C, Wege AK, Ritter U, Ahrens N, Koehl GE, Walter L, Florian C, Schlitt HJ, Reid HJ, Geissler EK, Sharp BL, Hutchinson JA. Laser Ablation–Inductively Coupled Plasma Mass Spectrometry: An Emerging Technology for Detecting Rare Cells in Tissue Sections. THE JOURNAL OF IMMUNOLOGY 2014; 193:2600-8. [DOI: 10.4049/jimmunol.1400869] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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86
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Polz J, Remke A, Weber S, Schmidt D, Weber-Steffens D, Pietryga-Krieger A, Müller N, Ritter U, Mostböck S, Männel DN. Myeloid suppressor cells require membrane TNFR2 expression for suppressive activity. IMMUNITY INFLAMMATION AND DISEASE 2014; 2:121-30. [PMID: 25400932 PMCID: PMC4217546 DOI: 10.1002/iid3.19] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 02/18/2014] [Accepted: 03/20/2014] [Indexed: 12/12/2022]
Abstract
TNF and TNF receptor type 2 (TNFR2) have been shown to be important for generation of myeloid-derived suppressor cells (MDSC). In order to analyze whether and how TNFR2 passes the effect of TNF on, myeloid cells from TNFR2-deficient mice were compared to respective cells from wild-type mice. Primary TNFR2-deficient myeloid cells showed reduced production of NO and IL-6 which was attributable to CD11b+ CD11c− Ly6C+ Ly6G− immature monocytic MDSC. TNFR2-deficient MDSC isolated from bone marrow were less suppressive for T cell proliferation compared to WT-derived MDSC. These differences on myeloid cells between the two mouse lines were still observed after co-culture of bone marrow cells from the two mouse lines together during myeloid cell differentiation, which demonstrated that the impaired functional capacity of TNFR2-deficient cells was independent of soluble factors but required membrane expression of TNFR2. Similarly, adoptive transfer of TNFR2-deficient bone marrow cells into wild-type hosts did not rescue the TNFR2-specific phenotype of bone marrow-derived myeloid cells. Therefore, membrane TNFR2 expression determines generation and function of monocytic MDSC.
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87
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Szroeder P, Tsierkezos NG, Walczyk M, Strupiński W, Górska-Pukownik A, Strzelecki J, Wiwatowski K, Scharff P, Ritter U. Insights into electrocatalytic activity of epitaxial graphene on SiC from cyclic voltammetry and ac impedance spectroscopy. J Solid State Electrochem 2014. [DOI: 10.1007/s10008-014-2512-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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88
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Skamrova GB, Laponogov I, Buchelnikov AS, Shckorbatov YG, Prylutska SV, Ritter U, Prylutskyy YI, Evstigneev MP. Interceptor effect of C60 fullerene on the in vitro action of aromatic drug molecules. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2014; 43:265-76. [PMID: 24748122 DOI: 10.1007/s00249-014-0960-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Revised: 03/20/2014] [Accepted: 04/01/2014] [Indexed: 10/25/2022]
Abstract
C60 fullerenes are spherical molecules composed purely of carbon atoms. They inspire a particularly strong scientific interest because of their specific physico-chemical properties and potential medical and nanotechnological applications. In this work we are focusing on studying the influence of the pristine C60 fullerene on biological activity of some aromatic drug molecules in human buccal epithelial cells. Assessment of the heterochromatin structure in the cell nucleus as well as the barrier function of the cell membrane was performed. The methods of cell microelectrophoresis and atomic force microscopy were also applied. A concentration-dependent restoration of the functional activity of the cellular nucleus after exposure to DNA-binding drugs (doxorubicin, proflavine and ethidium bromide) has been observed in human buccal epithelial cells upon addition of C60 fullerene at a concentration of ~10(-5 )M. The results were shown to follow the framework of interceptor/protector action theory, assuming that non-covalent complexation between C60 fullerene and the drugs (i.e., hetero-association) is the major process responsible for the observed biological effects. An independent confirmation of this hypothesis was obtained via investigation of the cellular response of buccal epithelium to the coadministration of the aromatic drugs and caffeine, and it is based on the well-established role of hetero-association in drug-caffeine systems. The results indicate that C60 fullerene may reverse the effects caused by the aromatic drugs, thereby pointing out the potential possibility of the use of aromatic drugs in combination with C60 fullerene for regulation of their medico-biological action.
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89
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Prylutskyy YI, Petrenko VI, Ivankov OI, Kyzyma OA, Bulavin LA, Litsis OO, Evstigneev MP, Cherepanov VV, Naumovets AG, Ritter U. On the origin of C₆₀ fullerene solubility in aqueous solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:3967-3970. [PMID: 24660846 DOI: 10.1021/la404976k] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this work, we report that the surface hydroxylation of C60 molecules is the most likely mechanism for pristine C60 fullerenes/C60 fullerene aggregate stabilization in water, being independent of the method of C60 fullerene aqueous solution preparation.
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90
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Nozdrenko D, Prylutskyy Y, Ritter U, Scharff P. Protective Effect of Water-Soluble Pristine C60 Fullerene in Ischemia-Reperfusion Injury of Skeletal Muscle. ACTA ACUST UNITED AC 2014. [DOI: 10.1615/intjphyspathophys.v5.i2.10] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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91
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Tsierkezos NG, Szroeder P, Ritter U. Voltammetric study on pristine and nitrogen-doped multi-walled carbon nanotubes decorated with gold nanoparticles. Mikrochim Acta 2013. [DOI: 10.1007/s00604-013-1118-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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92
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Tsierkezos NG, Haj Othman S, Ritter U. Nitrogen-doped carbon nanotubes modified with gold nanoparticles for simultaneous analysis of N-acetylcysteine and acetaminophen. J Solid State Electrochem 2013. [DOI: 10.1007/s10008-013-2298-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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93
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Prylutskyy YI, Buchelnikov AS, Voronin DP, Kostjukov VV, Ritter U, Parkinson JA, Evstigneev MP. C60 fullerene aggregation in aqueous solution. Phys Chem Chem Phys 2013; 15:9351-60. [PMID: 23660696 DOI: 10.1039/c3cp50187f] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
In the present work we develop a novel approach for quantification of the energetics of C60 fullerene aggregation in aqueous media in terms of equilibrium aggregation constant KF. In particular, it is shown that the experimental determination of the magnitude of KF is possible only within the framework of the 'up-scaled aggregation model', considering the C60 fullerene water solution as a solution of fullerene clusters. Using dynamic light scattering (DLS) data we report the value, K(F) = 56,000 M(-1), which is in good agreement with existing theoretical estimates and the results of energetic analyses. It is suggested that the proposed 'up-scaled model' may be used in any instances of non-specific aggregation resulting in formation of large spherical particles. The measurement of the translational diffusion coefficient and the dimensions of the light scattering particles using a DLS approach with respect to C60 fullerene aggregates is found to contain significant systematic errors originating from the interaction effect that is well-known for micellar solutions. As a result, corrections to the equations associated with DLS data are proposed.
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94
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Andreichenko KS, Prylutska SV, Medynska KO, Bogutska KI, Nurishchenko NE, Prylutskyy YI, Ritter U, Scharff P. Effect of fullerene C60 on ATPase activity and superprecipitation of skeletal muscle actomyosin. UKRAINS'KYI BIOKHIMICHNYI ZHURNAL (1999 ) 2013; 85:20-26. [PMID: 23808306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Creation of new biocompatible nanomaterials, which can exhibit the specific biological effects, is an important complex problem that requires the use of last accomplishments of biotechnology. The effect of pristine water-soluble fullerene C60 on ATPase activity and superprecipitation reaction of rabbit skeletal muscle natural actomyosin has been revealed, namely an increase of actomyosin superprecipitation and Mg2+, Ca(2+)- and K(+)-ATPase activity by fullerene was investigated. We conclude that this finding offers a real possibility for the regulation of contraction-relaxation of skeletal muscle with fullerene C60.
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95
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Prylutska S, Bilyy R, Shkandina T, Rotko D, Bychko A, Cherepanov V, Stoika R, Rybalchenko V, Prylutskyy Y, Tsierkezos N, Ritter U. Comparative study of membranotropic action of single- and multi-walled carbon nanotubes. J Biosci Bioeng 2013; 115:674-9. [PMID: 23428334 DOI: 10.1016/j.jbiosc.2012.12.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Revised: 11/29/2012] [Accepted: 12/22/2012] [Indexed: 01/17/2023]
Abstract
The aim of the present work is the investigation of the interactions of single-walled and multi-walled carbon nanotubes (further referred as SWCNTs and MWCNTs, respectively) with bimolecular lipid model membrane (BLM) and cellular plasma membrane (PM). The findings demonstrate that both SWCNTs and MWCNTs (in concentration range of 10⁻⁴ to 10⁻¹ mg ml⁻¹) are capable to penetrate through the region of hydrophobic fatty acid residues of phospholipids and to form molecular associates in the bilayer that have conductive properties of molecular pores type. The formed pores were shown to enable phosphatidylserine externalization from inner to outer PM leaflet. Both types of CNTs increase the specific conductivity and decrease the specific capacity of BLM.
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96
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Evstigneev MP, Buchelnikov AS, Voronin DP, Rubin YV, Belous LF, Prylutskyy YI, Ritter U. Complexation of C60 fullerene with aromatic drugs. Chemphyschem 2013; 14:568-78. [PMID: 23345058 DOI: 10.1002/cphc.201200938] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Revised: 12/11/2012] [Indexed: 12/13/2022]
Abstract
The contributions of various physical factors to the energetics of complexation of aromatic drug molecules with C(60) fullerene are investigated in terms of the calculated magnitudes of equilibrium complexation constants and the components of the net Gibbs free energy. Models of complexation are developed taking into account the polydisperse nature of fullerene solutions in terms of the continuous or discrete (fractal) aggregation of C(60) molecules. Analysis of the energetics has shown that stabilization of the ligand-fullerene complexes in aqueous solution is mainly determined by intermolecular van der Waals interactions and, to lesser extent, by hydrophobic interactions. The results provide a physicochemical basis for a potentially new biotechnological application of fullerenes as modulators of biological activity of aromatic drugs.
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97
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Tsierkezos NG, Ritter U. Electrochemical Responses and Sensitivities of Films Based on Multi-Walled Carbon Nanotubes in Aqueous Solutions. J SOLUTION CHEM 2012. [DOI: 10.1007/s10953-012-9925-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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98
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Barth T, Schmidt D, Botteron C, Nguyen TTT, Ritter U, Männel DN, Lechner A. An early reduction in Treg cells correlates with enhanced local inflammation in cutaneous leishmaniasis in CCR6-deficient mice. PLoS One 2012; 7:e44499. [PMID: 23028548 PMCID: PMC3460949 DOI: 10.1371/journal.pone.0044499] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2011] [Accepted: 08/08/2012] [Indexed: 11/30/2022] Open
Abstract
Resistance to Leishmania major infection is dependent on the development of a cell-mediated Th1 immune response in resistant C57BL/6 mice whereas Th2-prone BALB/c mice develop non-healing lesions after infection. The chemokine receptor CCR6 is shared by anti-inflammatory regulatory T cells and pro-inflammatory Th17 cells. In a recent study we showed that C57BL/6 mice deficient in CCR6 exhibited enhanced footpad swelling and impaired T helper cell migration indicated by reduced recruitment of total T helper cells into the skin after infection and a reduced delayed type hypersensitivity reaction. Based on these findings we tested whether the lack of CCR6 alters Treg or Th17 cell responses during the course of Leishmania major infection. When we analyzed T cell subsets in the lymph nodes of CCR6-deficient mice, Th17 cell numbers were not different. However, reduced numbers of Treg cells paralleled with a stronger IFNγ response. Furthermore, the early increase in IFNγ-producing cells correlated with increased local tissue inflammation at later time points. Our data indicate an important role of CCR6 for Treg cells and a redundant role for Th17 cells in a Th1 cell-driven anti-parasitic immune response against Leishmania major parasites in resistant C57BL/6 mice.
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99
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Tsierkezos NG, Ritter U, Wetzold N, Hübler AC. Non-enzymatic analysis of glucose on printed films based on multi-walled carbon nanotubes. Mikrochim Acta 2012. [DOI: 10.1007/s00604-012-0881-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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100
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Prylutska S, Bilyy R, Overchuk M, Bychko A, Andreichenko K, Stoika R, Rybalchenko V, Prylutskyy Y, Tsierkezos NG, Ritter U. Water-soluble pristine fullerenes C60 increase the specific conductivity and capacity of lipid model membrane and form the channels in cellular plasma membrane. J Biomed Nanotechnol 2012; 8:522-7. [PMID: 22764423 DOI: 10.1166/jbn.2012.1404] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of the present work was the investigation of the interaction of water-soluble pristine fullerenes C60 with bimolecular lipid model membrane (BLM) and cellular plasma membrane (PM). The findings demonstrate that the fullerenes C60 at low concentrations, namely in the concentration range of 1.0 x 10(-4) - 1.0 mg x ml(-1), are preferentially incorporated into the hydrophobic region of BLM, increasing, thus, its specific conductivity and specific capacity. Furthermore, upon interaction of fullerenes C60 with PM, pores or other type of local defects are formed, which are wide enough in order to permit the passage of water molecules across the cell membrane resulting to the externalization of phosphatidylserine from the inner to the outer PM leaflet.
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