1
|
Paluchowska P, Lim Rossmann S, Lysøe E, Janiszewska M, Michalak K, Heydarnajad Giglou R, Torabi Giglou M, Brurberg MB, Śliwka J, Yin Z. Diversity of the Ry sto gene conferring resistance to potato virus Y in wild relatives of potato. BMC Plant Biol 2024; 24:375. [PMID: 38714928 PMCID: PMC11077776 DOI: 10.1186/s12870-024-05089-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 04/30/2024] [Indexed: 05/12/2024]
Abstract
BACKGROUND Potato virus Y (PVY) is among the economically most damaging viral pathogen in production of potato (Solanum tuberosum) worldwide. The gene Rysto derived from the wild potato relative Solanum stoloniferum confers extreme resistance to PVY. RESULTS The presence and diversity of Rysto were investigated in wild relatives of potato (298 genotypes representing 29 accessions of 26 tuber-bearing Solanum species) using PacBio amplicon sequencing. A total of 55 unique Rysto-like sequences were identified in 72 genotypes representing 12 accessions of 10 Solanum species and six resistant controls (potato cultivars Alicja, Bzura, Hinga, Nimfy, White Lady and breeding line PW363). The 55 Rysto-like sequences showed 89.87 to 99.98% nucleotide identity to the Rysto reference gene, and these encoded in total 45 unique protein sequences. While Rysto-like26 identified in Alicja, Bzura, White Lady and Rysto-like16 in PW363 encode a protein identical to the Rysto reference, the remaining 44 predicted Rysto-like proteins were 65.93 to 99.92% identical to the reference. Higher levels of diversity of the Rysto-like sequences were found in the wild relatives of potato than in the resistant control cultivars. The TIR and NB-ARC domains were the most conserved within the Rysto-like proteins, while the LRR and C-JID domains were more variable. Several Solanum species, including S. antipoviczii and S. hougasii, showed resistance to PVY. This study demonstrated Hyoscyamus niger, a Solanaceae species distantly related to Solanum, as a host of PVY. CONCLUSIONS The new Rysto-like variants and the identified PVY resistant potato genotypes are potential resistance sources against PVY in potato breeding. Identification of H. niger as a host for PVY is important for cultivation of this plant, studies on the PVY management, its ecology, and migrations. The amplicon sequencing based on PacBio SMRT and the following data analysis pipeline described in our work may be applied to obtain the nucleotide sequences and analyze any full-length genes from any, even polyploid, organisms.
Collapse
Affiliation(s)
- Paulina Paluchowska
- Plant Breeding and Acclimatization Institute - National Research Institute (IHAR-PIB) in Radzików, Młochów Division, Platanowa St. 19, Młochów, 05-831, Poland
| | - Simeon Lim Rossmann
- Department of Plant Sciences, Norwegian University of Life Sciences (NMBU), Ås, Norway
- Division of Biotechnology and Plant Health, Norwegian Institute of Bioeconomy Research (NIBIO), Ås, Norway
| | - Erik Lysøe
- Division of Biotechnology and Plant Health, Norwegian Institute of Bioeconomy Research (NIBIO), Ås, Norway
| | - Marta Janiszewska
- Plant Breeding and Acclimatization Institute - National Research Institute (IHAR-PIB) in Radzików, Młochów Division, Platanowa St. 19, Młochów, 05-831, Poland
| | - Krystyna Michalak
- Plant Breeding and Acclimatization Institute - National Research Institute (IHAR-PIB) in Radzików, Młochów Division, Platanowa St. 19, Młochów, 05-831, Poland
| | - Rasoul Heydarnajad Giglou
- Department of Horticultural Sciences, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, 56199-11367, Iran
| | - Mousa Torabi Giglou
- Department of Horticultural Sciences, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, 56199-11367, Iran
| | - May Bente Brurberg
- Department of Plant Sciences, Norwegian University of Life Sciences (NMBU), Ås, Norway
- Division of Biotechnology and Plant Health, Norwegian Institute of Bioeconomy Research (NIBIO), Ås, Norway
| | - Jadwiga Śliwka
- Plant Breeding and Acclimatization Institute - National Research Institute (IHAR-PIB) in Radzików, Młochów Division, Platanowa St. 19, Młochów, 05-831, Poland
| | - Zhimin Yin
- Plant Breeding and Acclimatization Institute - National Research Institute (IHAR-PIB) in Radzików, Młochów Division, Platanowa St. 19, Młochów, 05-831, Poland.
| |
Collapse
|
2
|
Pastuszka A, Guz L, Michalak K, Pietras-Ożga D, Puk K. Vibrio infection in freshwater fish in Poland. Pol J Vet Sci 2024; 27:117-125. [PMID: 38511636 DOI: 10.24425/pjvs.2024.149341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
Vibrio species are common inhabitants of aquatic environments and have been described in connection with fish and human diseases. Six Vibrio species were isolated from diseased freshwater and ornamental fish in Poland. The strains were identified based on morphological and biochemical characteristics and confirmed by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) as V. albensis (n=3) from Gymnocephalus cernua, Sander lucioperca, Paracheirodon innesi, and Xiphophorus hellerii; V. mimicus (n=1) from Xiphophorus maculatus; and V. vulnificus (n=1) from Nematobrycon palmeri. This is the first time that Vibrio species have been isolated and described from ornamental fish in Poland. The isolates were resistant to ampicillin (83.3%), gentamicin (16.6%), ciprofloxacin (16.6%), sulfamethoxazole-trimethoprim (16.6%), and chloramphenicol (16.6%). The multiple antibiotic resistance (MAR) index was 0.00-0.08 for V. albensis, 0.17 for V. mimicus, and 0.33 for V. vulnificus. Our study confirmed the presence of potentially pathogenic Vibrio species in freshwater and ornamental fish. Therefore, further monitoring of the presence of Vibrio species, mainly in ornamental fish, is necessary.
Collapse
Affiliation(s)
- A Pastuszka
- Department of Biology and Fish Diseases, Faculty of Veterinary Medicine, University of Life Sciences, Akademicka 12, 20-950 Lublin, Poland
| | - L Guz
- Department of Biology and Fish Diseases, Faculty of Veterinary Medicine, University of Life Sciences, Akademicka 12, 20-950 Lublin, Poland
| | - K Michalak
- Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences, Głęboka 30, 20-612 Lublin, Poland
| | - D Pietras-Ożga
- Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences, Głęboka 30, 20-612 Lublin, Poland
| | - K Puk
- Department of Biology and Fish Diseases, Faculty of Veterinary Medicine, University of Life Sciences, Akademicka 12, 20-950 Lublin, Poland
| |
Collapse
|
3
|
Pisarek M, Kalinowski M, Skrzypczak M, Mazurek Ł, Michalak K, Pietras-Ożga D, Dokuzeylü B, Winiarczyk S, Adaszek Ł. Comparison of serum protein profiles of Borrelia burgdorferi-positive Bernese Mountain Dogs and dogs of other breeds using MALDI-TOF technique. Pol J Vet Sci 2023; 26:493-496. [PMID: 37727957 DOI: 10.24425/pjvs.2023.145041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
The aim of the study was to compare the serum protein profile of Bernese Mountain Dogs (BMDs) reacting positive for Bb in snap testing with the serum protein profile of dogs of other breeds (healthy and with clinical borreliosis) using the MALDI time-of-flight (MALDI-TOF) technique. The observations included five groups of dogs. BMDs reacting positively to Bb in snap serological testing and showing symptoms of borreliosis (group 1), BMDs for which no borreliosis symptoms were determined but with seropositivity for Bb determined with snap serological tests (group 2), clinically healthy BMDs with no antibodies for Bb found in the serum (group 3), five dogs of different breeds, reacting positively in serological testing, in which borreliosis symptoms were observed (group 4), clinically healthy dogs of different breeds with negative reaction in tests towards Bb (group 5). A proteomic analysis demonstrated the presence of five identical protein fractions among all five groups. An additional two protein fractions of approximately 7.630 and 15.260 kDa were found in all the serum samples obtained from the dogs positive for borrelia in a snap test, both in those exhibiting symptoms of borreliosis, and seropositive BMDs not presenting symptoms of the disease. These two additional protein fractions may be used to differentiate between seropositive and seronegative B. burgdorferi dogs and may be considered a seropositivity marker, however, it cannot be used to differentiate between animals with the clinical form of the disease and those that are only seropositive.
Collapse
Affiliation(s)
- M Pisarek
- Department of Epizoology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine of the University of Life Sciences in Lublin, ul. Głęboka 30, 20-612 Lublin, Poland
| | - M Kalinowski
- Department of Epizoology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine of the University of Life Sciences in Lublin, ul. Głęboka 30, 20-612 Lublin, Poland
| | - M Skrzypczak
- Second Department of Gynecology, Medical University of Lublin, 20-954 Lublin, Poland
| | - Ł Mazurek
- Department of Epizoology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine of the University of Life Sciences in Lublin, ul. Głęboka 30, 20-612 Lublin, Poland
| | - K Michalak
- Department of Epizoology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine of the University of Life Sciences in Lublin, ul. Głęboka 30, 20-612 Lublin, Poland
| | - D Pietras-Ożga
- Department of Epizoology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine of the University of Life Sciences in Lublin, ul. Głęboka 30, 20-612 Lublin, Poland
| | - B Dokuzeylü
- Department of Internal Medicine, Veterinary Faculty, Istanbul University-Cerrahpasa, 34320 Avcilar Campus, Avcilar, Istanbul, Turkey
| | - S Winiarczyk
- Department of Epizoology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine of the University of Life Sciences in Lublin, ul. Głęboka 30, 20-612 Lublin, Poland
| | - Ł Adaszek
- Department of Epizoology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine of the University of Life Sciences in Lublin, ul. Głęboka 30, 20-612 Lublin, Poland
| |
Collapse
|
4
|
Yin Z, Xie F, Michalak K, Murawska Z, Zhang B, Lebecka R. Evaluation of reference genes for miRNA and mRNA normalization in tobacco infected with PVY NTN, PVY N-Wi and PVY Z-NTN strains. Gene 2023; 862:147261. [PMID: 36764339 DOI: 10.1016/j.gene.2023.147261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 01/21/2023] [Accepted: 02/06/2023] [Indexed: 02/11/2023]
Abstract
This is the first report on identification of the most suitable reference genes for RT-qPCR quantification of miRNA and mRNA in tobacco response to the prevalent recombinant potato virus Y (PVY) strains PVYNTN, PVYN-Wi and the newly identified PVYZ-NTN. Of 10 tested genes, the expression levels of neIF5C, nU2af and nPP2A were the most stable in samples taken from non-inoculated, mock-inoculated, and infected plants at three days post-inoculation (dpi) and 14 dpi. While the homologues of eIF5 were most stably expressed in tobacco in this study and in potato in our previous study (Yin et al., 2021) following inoculation with the same three PVY strains, the homologues of other two genes PP2A and U2af were stably expressed only in tobacco but unstable in potato. The tobacco homologue of PP2A, which was the most stably expressed one in tobacco interaction with PVYNTN, PVYN-Wi and PVYZ-NTN strains in this study, was the least stable one in tobacco interaction with the non-recombinant PVYO strain in a previous study (Baek et al., 2017). This study provides evidence on the influence of host species on expression of housekeeping genes and points out virus strain as a new factor influencing expression stability of reference gene. Caution should be taken when choosing reference genes in gene expression study in Solanaceae hosts response to different PVY strains.
Collapse
Affiliation(s)
- Zhimin Yin
- Plant Breeding and Acclimatization Institute-National Research Institute, Platanowa 19, 05-831 Młochów, Poland.
| | - Fuliang Xie
- Department of Biology, East Carolina University, Greenville, NC 27858, USA
| | - Krystyna Michalak
- Plant Breeding and Acclimatization Institute-National Research Institute, Platanowa 19, 05-831 Młochów, Poland
| | - Zofia Murawska
- Plant Breeding and Acclimatization Institute-National Research Institute, Platanowa 19, 05-831 Młochów, Poland
| | - Baohong Zhang
- Department of Biology, East Carolina University, Greenville, NC 27858, USA
| | - Renata Lebecka
- Plant Breeding and Acclimatization Institute-National Research Institute, Platanowa 19, 05-831 Młochów, Poland
| |
Collapse
|
5
|
Maniewska J, Gąsiorowska J, Czyżnikowska Ż, Michalak K, Szczęśniak-Sięga BM. New Meloxicam Derivatives-Synthesis and Interaction with Phospholipid Bilayers Measured by Differential Scanning Calorimetry and Fluorescence Spectroscopy. Membranes (Basel) 2023; 13:416. [PMID: 37103843 PMCID: PMC10145084 DOI: 10.3390/membranes13040416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 03/31/2023] [Accepted: 04/05/2023] [Indexed: 06/19/2023]
Abstract
The purpose of the present paper was to assess the ability of five newly designed and synthesized meloxicam analogues to interact with phospholipid bilayers. Calorimetric and fluorescence spectroscopic measurements revealed that, depending on the details of the chemical structure, the studied compounds penetrated bilayers and affected mainly their polar/apolar regions, closer to the surface of the model membrane. The influence of meloxicam analogues on the thermotropic properties of DPPC bilayers was clearly visible because these compounds reduced the temperature and cooperativity of the main phospholipid phase transition. Additionally, the studied compounds quenched the fluorescence of prodan to a higher extent than laurdan, what pointed to a more pronounced interaction with membrane segments close to its surface. We presume that a more pronounced intercalation of the studied compounds into the phospholipid bilayer may be related to the presence of the molecule of a two-carbon aliphatic linker with a carbonyl group and fluorine substituent/trifluoromethyl group (compounds PR25 and PR49) or the three-carbon linker together with the trifluoromethyl group (PR50). Moreover, computational investigations of the ADMET properties have shown that the new meloxicam analogues are characterized by beneficial expected physicochemical parameters, so we may presume that they will have a good bioavailability after an oral administration.
Collapse
Affiliation(s)
- Jadwiga Maniewska
- Department of Medicinal Chemistry, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211, 50-556 Wrocław, Poland
| | - Justyna Gąsiorowska
- Department of Biophysics and Neuroscience, Wroclaw Medical University, T. Chałubińskiego 3a, 50-368 Wrocław, Poland
| | - Żaneta Czyżnikowska
- Department of Basic Chemical Sciences, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211a, 50-556 Wrocław, Poland
| | - Krystyna Michalak
- Department of Biophysics and Neuroscience, Wroclaw Medical University, T. Chałubińskiego 3a, 50-368 Wrocław, Poland
| | - Berenika M. Szczęśniak-Sięga
- Department of Medicinal Chemistry, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211, 50-556 Wrocław, Poland
| |
Collapse
|
6
|
Maniewska J, Czyżnikowska Ż, Szczęśniak-Sięga BM, Michalak K. Interaction of Oxicam Derivatives with the Artificial Models of Biological Membranes-Calorimetric and Fluorescence Spectroscopic Study. Membranes (Basel) 2022; 12:membranes12080791. [PMID: 36005706 PMCID: PMC9412344 DOI: 10.3390/membranes12080791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/12/2022] [Accepted: 08/16/2022] [Indexed: 05/12/2023]
Abstract
The modified 1,2-benzothiazine analogues designed as new drug candidates and discussed in this paper are oxicam derivatives. Oxicams are a class of non-steroidal anti-inflammatory drugs (NSAIDs). Their biological target is cyclooxygenase (COX), a membrane protein associated with the phospholipid bilayer. In recent decades, it has been proven that the biological effect of NSAIDs may be closely related to their interaction at the level of the biological membrane. These processes are often complicated and the biological membranes themselves are very complex. Therefore, to study these mechanisms, simplified models of biological membranes are used. To characterize the interaction of six oxicam derivatives with DPPC, DMPC and EYPC, artificial models of biological membranes (multi-bilayers or liposomes), differential scanning calorimetry (DSC) and fluorescence spectroscopy techniques were applied. In spectroscopic measurements, two fluorescent probes (Laurdan and Prodan) localized in different membrane segments were used. All tested oxicam derivatives interacted with the lipid bilayers and may penetrate the artificial models of biological membranes. They intercalated into the lipid bilayers and were located in the vicinity of the polar/apolar membrane interface. Moreover, a good drug candidate should not only have high efficiency against a molecular target but also exhibit strictly defined ADMET parameters, therefore these activities of the studied compounds were also estimated.
Collapse
Affiliation(s)
- Jadwiga Maniewska
- Department of Medicinal Chemistry, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211, 50-556 Wroclaw, Poland
- Correspondence: ; Tel.: +48-71-784-0397
| | - Żaneta Czyżnikowska
- Department of Inorganic Chemistry, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211a, 50-556 Wroclaw, Poland
| | - Berenika M. Szczęśniak-Sięga
- Department of Medicinal Chemistry, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211, 50-556 Wroclaw, Poland
| | - Krystyna Michalak
- Department of Biophysics and Neuroscience, Faculty of Medicine, Wroclaw Medical University, T. Chałubińskiego 3a, 50-368 Wroclaw, Poland
| |
Collapse
|
7
|
Teisseyre A, Uryga A, Michalak K. Statins as inhibitors of voltage-gated potassium channels Kv1.3 in cancer cells. J Mol Struct 2021; 1230:129905. [PMID: 33437096 PMCID: PMC7789826 DOI: 10.1016/j.molstruc.2021.129905] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 12/07/2020] [Accepted: 12/29/2020] [Indexed: 12/24/2022]
Abstract
Voltage-gated potassium channels are integral membrane proteins selectively permeable for potassium ions and activated upon change of membrane potential. Voltage-gated potassium channels of the Kv1.3 type were discovered both in plasma membrane and in inner mitochondrial membrane (mito Kv1.3 channels). For some time Kv1.3 channels located both in plasma membrane and in mitochondria are considered as a potentially new molecular target in several pathologies including some cancer disorders. Lipophilic nontoxic organic inhibitors of Kv1.3 channels may potentially find a clinical application to support therapy of some cancer diseases such as breast, pancreas and lung cancer, melanoma or chronic lymphocytic leukaemia (B-CLL). Inhibition of T lymphocyte Kv1.3 channels may be also important in treatment of chronic and acute respiratory diseases including severe pulmonary complication in corona virus disease Covid 19, however further studies are needed to confirm this supposition. Statins are small-molecule organic compounds, which are lipophilic and are widely used in treatment of hypercholesterolemia and atherosclerosis. Electrophysiological studies performed in our laboratory showed that statins: pravastatin, mevastatin and simvastatin are effective inhibitors of Kv1.3 channels in cancer cells of human T cell line Jurkat. We showed that application of the statins in the concentration range from 1.5 μM to 50 μM inhibited the channels in a concentration-dependent manner. The inhibitory effect was the most potent in case of simvastatin and the least potent in case of pravastatin. The inhibition was partially irreversible in case of simvastatin and fully reversible in case of pravastatin and mevastatin. It was accompanied by a significant acceleration of the current inactivation rate without any significant change of the activation rate. Mechanism of the inhibition is probably complex, including a direct interaction with the channel protein and perturbation of lipid bilayer structure, leading to stabilization of the inactivated state of the channels.
Collapse
|
8
|
Yin Z, Xie F, Michalak K, Zhang B, Zimnoch-Guzowska E. Reference gene selection for miRNA and mRNA normalization in potato in response to potato virus Y. Mol Cell Probes 2020; 55:101691. [PMID: 33358935 DOI: 10.1016/j.mcp.2020.101691] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 12/03/2020] [Accepted: 12/18/2020] [Indexed: 02/07/2023]
Abstract
This was the first report on evaluating candidate reference genes for quantifying the expression profiles of both coding (e.g., mRNA) and non-coding (e.g., miRNA) genes in potato response to potato virus Y (PVY) inoculation. The reverse transcription-quantitative real-time polymerase chain reaction (RT-qPCR) method was employed to quantify the expression profiles of eight selected candidate reference genes; their expression stability was analyzed by four statistical algorithms, i.e., geNorm, BestKeeper, NormFinder and RefFinder. The most stable reference genes were sEF1a, sTUBb and seIF5 with a high stability. The least stable ones were sPP2A, sSUI1 and sGAPDH. The same reference gene allows for normalization of both miRNA and mRNA levels from a single RNA sample using cDNAs synthesized in a single RT reaction, in which a stem-loop primer was used for miRNAs and the oligo (dT) for mRNAs.
Collapse
Affiliation(s)
- Zhimin Yin
- Plant Breeding and Acclimatization Institute, National Research Institute, Młochów Research Center, Platanowa 19, Młochów, PL-05-831, Poland.
| | - Fuliang Xie
- Department of Biology, East Carolina University, Greenville, NC, 27858, USA
| | - Krystyna Michalak
- Plant Breeding and Acclimatization Institute, National Research Institute, Młochów Research Center, Platanowa 19, Młochów, PL-05-831, Poland
| | - Baohong Zhang
- Department of Biology, East Carolina University, Greenville, NC, 27858, USA
| | - Ewa Zimnoch-Guzowska
- Plant Breeding and Acclimatization Institute, National Research Institute, Młochów Research Center, Platanowa 19, Młochów, PL-05-831, Poland
| |
Collapse
|
9
|
Wesołowska O, Michalak K, Błaszczyk M, Molnár J, Środa-Pomianek K. Organosilicon Compounds, SILA-409 and SILA-421, as Doxorubicin Resistance-Reversing Agents in Human Colon Cancer Cells. Molecules 2020; 25:molecules25071654. [PMID: 32260260 PMCID: PMC7181076 DOI: 10.3390/molecules25071654] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 03/31/2020] [Accepted: 04/01/2020] [Indexed: 02/05/2023] Open
Abstract
Multidrug resistance (MDR) that occurs in cancer cells constitutes one of the major reasons for chemotherapy failure. The main molecular mechanism of MDR is overexpression of protein transporters from the ATP-binding cassette (ABC) superfamily, such as ABCB1 (multidrug resistance protein 1 (MDR1), P-glycoprotein). At the expense of ATP hydrolysis, ABCB1 pumps a diverse range of substrates (including anticancer drugs) out of the cell, thereby reducing their intracellular concentration. In the present study, the ability of two patented disiloxanes (SILA-409 and SILA-421) to reverse drug resistance in human colon adenocarcinoma cell lines LoVo and LoVo/Dx was investigated. It was demonstrated that both compounds in concentrations of 0.5-1 µM strongly increased the sensitivity of LoVo/Dx cells to doxorubicin. By means of an accumulation test in which rhodamine 123 was used as an ABCB1 substrate analogue, both organosilicon compounds were also shown to inhibit ABCB1 transport activity. The intracellular accumulation of doxorubicin was also increased, and more drug entered the cellular nuclei of resistant cells in the presence of the studied compounds. In conclusion, both SILA-409 and SILA-421 were demonstrated to be effective MDR reversal agents in resistant human colon cancer cells.
Collapse
Affiliation(s)
- Olga Wesołowska
- Department of Biophysics and Neuroscience, Wroclaw Medical University, 50-367 Wroclaw, Poland
- Correspondence: ; Tel.: +48-71-784-14-15
| | - Krystyna Michalak
- Department of Biophysics and Neuroscience, Wroclaw Medical University, 50-367 Wroclaw, Poland
| | - Maria Błaszczyk
- Department of Biophysics and Neuroscience, Wroclaw Medical University, 50-367 Wroclaw, Poland
| | - Joseph Molnár
- Institute of Medical Microbiology and Immunobiology, University of Szeged, 6720 Szeged, Hungary
| | - Kamila Środa-Pomianek
- Department of Biophysics and Neuroscience, Wroclaw Medical University, 50-367 Wroclaw, Poland
| |
Collapse
|
10
|
Winiarczyk D, Michalak K, Adaszek L, Winiarczyk M, Winiarczyk S. Urinary proteome of dogs with kidney injury during babesiosis. BMC Vet Res 2019; 15:439. [PMID: 31801572 PMCID: PMC6894246 DOI: 10.1186/s12917-019-2194-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 11/26/2019] [Indexed: 02/07/2023] Open
Abstract
Background Acute kidney injury is the most frequent complication of babesiosis in dogs and may provide a natural model for identifying early and specific markers of kidney injury in this species. There are limited data on urine proteomics in dogs, and none of the effect of babesiosis on the urine proteome. This study aimed to identify urinary proteins of dogs with kidney injury during the natural course of babesiosis caused by Babesia canis, and to compare them with proteins in a control group to reveal any potential biomarkers predicting renal injury before the presence of azotemia. Urine samples were collected from 10 dogs of various breeds and sex with naturally occurring babesiosis, and 10 healthy dogs. Pooled urine samples from both groups were separated by 2D (two-dimensional) electrophoresis, followed by protein identification using MALDI-TOF (matrix-assisted laser desorption ionization time of flight) mass spectrometry. Results In total, 176 proteins were identified in the urine samples from healthy dogs, and 403 proteins were identified in the urine samples from dogs with babesiosis. Of the 176 proteins, 146 were assigned exclusively to healthy dogs, and 373 of the 403 proteins were assigned exclusively to dogs with babesiosis; 30 proteins were common for both groups. Characteristic analysis of 373 proteins found in dogs with babesiosis led to the isolation of 8 proteins associated with 10 metabolic pathways involved in immune and inflammatory responses. Conclusions It was hypothesized that epithelial-mesenchymal transition might play an important role in the mechanisms underlying pathological changes in renal tissue during babesiosis, as indicated by a causal relationship network built by combining 5 of the 10 selected metabolic pathways, and 4 of the 8 proteins associated with these pathways; this network included cadherins, gonadotropin releasing hormone receptors, inflammatory responses mediated by chemokine and cytokine signalling pathways, integrins, interleukins, and TGF-β (transforming growth factor β) pathways. Those pathways were linked by interleukin-13, bone morphogenetic protein 7, α2(1) collagen, and tyrosine protein kinase Fer, which are potential biomarkers of damage during babesiosis in dogs, that might indicate early renal injury.
Collapse
Affiliation(s)
- D Winiarczyk
- Department and Clinic of Animal Internal Diseases, University of Life Sciences, Głęboka 30, 20-612, Lublin, Poland
| | - K Michalak
- Department of Epizootiology and Clinic of Infectious Diseases, University of Life Sciences, Głęboka 30, 20- 612, Lublin, Poland
| | - L Adaszek
- Department of Epizootiology and Clinic of Infectious Diseases, University of Life Sciences, Głęboka 30, 20- 612, Lublin, Poland
| | - M Winiarczyk
- Department of Vitreoretinal Surgery, Medical University of Lublin, Chmielna 1, 20-079, Lublin, Poland
| | - S Winiarczyk
- Department of Epizootiology and Clinic of Infectious Diseases, University of Life Sciences, Głęboka 30, 20- 612, Lublin, Poland.
| |
Collapse
|
11
|
Palko-Łabuz A, Kostrzewa-Susłow E, Janeczko T, Środa-Pomianek K, Poła A, Uryga A, Michalak K. Cyclization of flavokawain B reduces its activity against human colon cancer cells. Hum Exp Toxicol 2019; 39:262-275. [PMID: 31640425 DOI: 10.1177/0960327119882986] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Chalcones are naturally occurring compounds exhibiting biological activity through multiple mechanisms. Flavokawain B is one of chalcones found in kava plant. In our studies, we focused on the anticancer activity of flavokawain B in colorectal cancer cells LoVo and its resistant to doxorubicin subline-LoVo/Dx. Strong cytotoxic activity of flavokawain B and its ability to inhibit the proliferation in both cell lines was detected. These effects accompanied with induction cell cycle arrest in G2/M phase and the presence of SubG1 fraction. Flavokawain B at low concentration led to increase of caspase-3 activity. The chalcone-induced apoptosis was also confirmed by DNA fragmentation. In our work, the conversion of flavokawain B to corresponding flavanone-5,7-dimetoxyflavanone-was shown to be more extensive in cancer than in non-cancer cells. We found that the cyclization of the chalcone was related to the significant decrease in the cytotoxicity. Cell proliferation and cell cycle progression were not impaired significantly in the studied cancer cells incubated with 5,7-dimethoxyflavanone. We did not observe apoptosis in the cells incubated with flavanone. The results from biological studies agreed with the theoretical activity that emerges from structural parameters.
Collapse
Affiliation(s)
- A Palko-Łabuz
- Department of Biophysics, Wroclaw Medical University, Wrocław, Poland
| | - E Kostrzewa-Susłow
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
| | - T Janeczko
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
| | - K Środa-Pomianek
- Department of Biophysics, Wroclaw Medical University, Wrocław, Poland
| | - A Poła
- Department of Biophysics, Wroclaw Medical University, Wrocław, Poland
| | - A Uryga
- Department of Biophysics, Wroclaw Medical University, Wrocław, Poland
| | - K Michalak
- Department of Biophysics, Wroclaw Medical University, Wrocław, Poland
| |
Collapse
|
12
|
Teisseyre A, Palko-Labuz A, Sroda-Pomianek K, Michalak K. Voltage-Gated Potassium Channel Kv1.3 as a Target in Therapy of Cancer. Front Oncol 2019; 9:933. [PMID: 31612103 PMCID: PMC6769076 DOI: 10.3389/fonc.2019.00933] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 09/06/2019] [Indexed: 12/11/2022] Open
Abstract
Voltage-gated potassium channel Kv1.3 is an integral membrane protein, which is selectively permeable for potassium ions and is activated upon a change of membrane potential. Channel activation enables transportation of potassium ions down their electrochemical gradient. Kv1.3 channel is expressed in many cell types, both normal and cancer. Activity of the channel plays an important role in cell proliferation and apoptosis. Inhibition of Kv1.3 channel may be beneficial in therapy of several diseases including some cancer disorders. This review focuses on Kv1.3 channel as a new potentially attractive molecular target in cancer therapy. In the first part, changes in the channel expression in selected cancer disorders are described. Then, the role of the channel activity in cancer cell proliferation and apoptosis is presented. Finally, it is shown that some low molecular weight organic inhibitors of the channel including selected biologically active plant-derived polycyclic compounds may selectively induce apoptosis of Kv1.3-expressing cancer cells while sparing normal cells and healthy organs. These compounds may be promising candidates for putative application in therapy of some cancer disorders, such as melanoma, pancreatic ductal adenocarcinoma (PDAC), or B-type chronic lymphocytic leukemia (B-CLL).
Collapse
Affiliation(s)
- Andrzej Teisseyre
- Department of Biophysics, Wroclaw Medical University, Wrocław, Poland
| | - Anna Palko-Labuz
- Department of Biophysics, Wroclaw Medical University, Wrocław, Poland
| | | | - Krystyna Michalak
- Department of Biophysics, Wroclaw Medical University, Wrocław, Poland
| |
Collapse
|
13
|
Środa-Pomianek K, Michalak K, Palko-Łabuz A, Poła A, Dzięgiel P, Puła B, Świątek P, Wesołowska O. Cytotoxic and multidrug resistance reversal activity of phenothiazine derivative is strongly enhanced by theobromine, a phytochemical from cocoa. Eur J Pharmacol 2019; 849:124-134. [DOI: 10.1016/j.ejphar.2019.01.061] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 01/03/2019] [Accepted: 01/17/2019] [Indexed: 12/22/2022]
|
14
|
Środa-Pomianek K, Michalak K, Palko-Łabuz A, Uryga A, Świątek P, Majkowski M, Wesołowska O. The Combined Use of Phenothiazines and Statins Strongly Affects Doxorubicin-Resistance, Apoptosis, and Cox-2 Activity in Colon Cancer Cells. Int J Mol Sci 2019; 20:ijms20040955. [PMID: 30813251 PMCID: PMC6412564 DOI: 10.3390/ijms20040955] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 02/14/2019] [Accepted: 02/19/2019] [Indexed: 01/28/2023] Open
Abstract
Since none of the multidrug resistance (MDR) modulators tested so far found their way into clinic, a novel approach to overcome the MDR of cancer cells has been proposed. The combined use of two MDR modulators of dissimilar mechanisms of action was suggested to benefit from the synergy between them. The effect of three phenothiazine derivatives that were used as single agents and in combination with simvastatin on cell growth, apoptosis induction, activity, and expression of cyclooxygenase-2 (COX-2) in doxorubicin-resistant colon cancer cells (LoVo/Dx) was investigated. Treatment of LoVo/Dx cells by phenothiazine derivatives combined with simvastatin resulted in an increase of doxorubicin cytotoxicity and its intracellular accumulation as compared to the treatment with phenothiazine derivatives that were used as single agents. Similarly, LoVo/Dx cells treated with two-component mixture of modulators showed the reduced expression of ABCB1 (P-glycoprotein) transporter and COX-2 enzyme, both on mRNA and protein level. Reduced expression of anti-apoptotic Bcl-2 protein and increased expression of pro-apoptotic Bax were also detected. Additionally, COX-2 activity was diminished, and caspase-3 activity was increased to a higher extent by phenothiazine derivative:simvastatin mixtures than by phenothiazine derivatives themselves. Therefore, the introduction of simvastatin strengthened the anti-MDR, anti-inflammatory, and pro-apoptotic properties of phenothiazines in LoVo/Dx cells.
Collapse
Affiliation(s)
- Kamila Środa-Pomianek
- Department of Biophysics, Wroclaw Medical University, ul. Chalubinskiego 10, 50-368 Wroclaw, Poland.
| | - Krystyna Michalak
- Department of Biophysics, Wroclaw Medical University, ul. Chalubinskiego 10, 50-368 Wroclaw, Poland.
| | - Anna Palko-Łabuz
- Department of Biophysics, Wroclaw Medical University, ul. Chalubinskiego 10, 50-368 Wroclaw, Poland.
| | - Anna Uryga
- Department of Biophysics, Wroclaw Medical University, ul. Chalubinskiego 10, 50-368 Wroclaw, Poland.
| | - Piotr Świątek
- Department of Chemistry of Drugs, Wroclaw Medical University, ul. Borowska 211, 50-556 Wroclaw, Poland.
| | - Michał Majkowski
- Confocal Microscopy Laboratory, Polish Center for Technology Development, ul. Stabłowicka 147, 54-066 Wrocław, Poland.
| | - Olga Wesołowska
- Department of Biophysics, Wroclaw Medical University, ul. Chalubinskiego 10, 50-368 Wroclaw, Poland.
| |
Collapse
|
15
|
Yin Z, Murawska Z, Xie F, Pawełkowicz M, Michalak K, Zhang B, Lebecka R. microRNA response in potato virus Y infected tobacco shows strain-specificity depending on host and symptom severity. Virus Res 2019; 260:20-32. [PMID: 30423361 DOI: 10.1016/j.virusres.2018.11.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 11/02/2018] [Accepted: 11/05/2018] [Indexed: 12/20/2022]
Abstract
The present study demonstrates how different potato virus Y (PVY) strains affect the miRNA balance in tobacco cv. Samsun. The two prevalent strains PVYNTN and PVYN-Wi caused severe and mild veinal necrosis (VN) respectively, and the unique PVYZ-NTN strain induced milder vein clearing (VCl) in the upper non-inoculated leaves. A single amino acid polymorphisms (SAPs) I252V and a Q412 to R412 substitution in the HC-Pro cistron of the PVYZ-NTN strain might relate to the loss of VN in tobacco. The abundance of 18 out of the 26 tested miRNAs was increased upon infection by the severe strains PVYNTN and PVYN-Wi. Expression of a group of defense related transcripts were increased accordingly. Two miRNAs, nta-miR6020a-5p and nta-miR6164a/b, which target the TIR-NBS-LRR type resistant TMV N genes involving in signal transduction, might correlate with the PVYNTN and PVYN-Wi induced VN. The down-regulated mRNAs, e.g., RAP2-7 and TOE3, PXC3, LRR-RLK, ATHB-14 and TCP4 targeted by nta-miR172, nta-miR390, nta-miR482, nta-miR166 and nta-miR319/159 respectively, were related to regulation of transcription, protein phosphorylation and cell differentiation. The observed strain-specific alteration of miRNAs and their targets are host dependent and corresponds to the symptom severity and the viral HC-Pro RNA levels.
Collapse
Affiliation(s)
- Zhimin Yin
- Plant Breeding and Acclimatization Institute - National Research Institute, Młochów Research Center, Platanowa 19, PL-05-831, Młochów, Poland.
| | - Zofia Murawska
- Plant Breeding and Acclimatization Institute - National Research Institute, Młochów Research Center, Platanowa 19, PL-05-831, Młochów, Poland
| | - Fuliang Xie
- Department of Biology, East Carolina University, Greenville, NC, 27858, USA
| | - Magdalena Pawełkowicz
- Department of Plant Genetics, Breeding & Biotechnology, Faculty of Horticulture, Biotechnology and Landscape Architecture, Warsaw University of Life Sciences - SGGW, Nowoursynowska Street 159, PL-02-776, Warsaw, Poland
| | - Krystyna Michalak
- Plant Breeding and Acclimatization Institute - National Research Institute, Młochów Research Center, Platanowa 19, PL-05-831, Młochów, Poland
| | - Baohong Zhang
- Department of Biology, East Carolina University, Greenville, NC, 27858, USA
| | - Renata Lebecka
- Plant Breeding and Acclimatization Institute - National Research Institute, Młochów Research Center, Platanowa 19, PL-05-831, Młochów, Poland
| |
Collapse
|
16
|
Palko-Łabuz A, Środa-Pomianek K, Wesołowska O, Kostrzewa-Susłow E, Uryga A, Michalak K. MDR reversal and pro-apoptotic effects of statins and statins combined with flavonoids in colon cancer cells. Biomed Pharmacother 2018; 109:1511-1522. [PMID: 30551403 DOI: 10.1016/j.biopha.2018.10.169] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 10/22/2018] [Accepted: 10/30/2018] [Indexed: 12/19/2022] Open
Abstract
The resistance of cancer cells to a variety of structurally non-related cytotoxic drugs is known as multidrug resistance phenomenon (MDR). In cellular membranes an activity of MDR transporters such as P-glycoprotein (ABCB1) is affected by their lipid environment. Many various compounds have been examined for their ability to restore drug-sensitivity of resistant cancer cells. Statins, inhibitors of the key enzyme of mevalonate pathway HMG-CoA (3-hydroxy-3-methyl-glutaryl-coenzyme A) reductase are drugs commonly prescribed in order to reduce serum level of cholesterol and to diminish the risk of cardiovascular disease. Statins as drugs that influence lipid composition of cell membrane and in that way they also exert influence on lipid bilayer properties appear to be good candidates as MDR modulators. In this work it was shown that statins - mevastatin and simvastatin exert antiproliferative, pro-apoptotic and reversing drug resistance effect in human colon adenocarcinoma cell line LoVo and its drug-resistant subline LoVo/Dx. A hypothesis was also checked whether flavones, which as it is well known are able to influence the biosynthesis of cholesterol, may change the anticancer activity of statins. Our investigations have revealed that combined use of statins and studied flavonoids results in enhanced cell growth inhibition and apoptosis and lower cancer cell proliferation as compared to the application only statins alone. Moreover, in drug resistant LoVo/Dx cells a stronger decrease of resistance to doxorubicine was observed in the presence of statins in combination with flavones as compared to the effect observed for statins only.
Collapse
Affiliation(s)
- Anna Palko-Łabuz
- Department of Biophysics, Wroclaw Medical University, Chalubinskiego 10, 50-368, Wroclaw, Poland.
| | - Kamila Środa-Pomianek
- Department of Biophysics, Wroclaw Medical University, Chalubinskiego 10, 50-368, Wroclaw, Poland
| | - Olga Wesołowska
- Department of Biophysics, Wroclaw Medical University, Chalubinskiego 10, 50-368, Wroclaw, Poland
| | - Edyta Kostrzewa-Susłow
- Department of Chemistry, Wroclaw University of Environmental and Life Sciences, Norwida 25, 50-375, Wroclaw, Poland
| | - Anna Uryga
- Department of Biophysics, Wroclaw Medical University, Chalubinskiego 10, 50-368, Wroclaw, Poland
| | - Krystyna Michalak
- Department of Biophysics, Wroclaw Medical University, Chalubinskiego 10, 50-368, Wroclaw, Poland
| |
Collapse
|
17
|
Teisseyre A, Palko-Labuz A, Uryga A, Michalak K. The Influence of 6-Prenylnaringenin and Selected Non-prenylated Flavonoids on the Activity of Kv1.3 Channels in Human Jurkat T Cells. J Membr Biol 2018; 251:695-704. [PMID: 30187077 DOI: 10.1007/s00232-018-0046-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 08/29/2018] [Indexed: 01/03/2023]
Abstract
The influence of a prenylated flavonoid-6-prenylnaringenin (6-PR) and selected non-prenylated flavonoids: acacetin, chrysin, baicalein, wogonin, and luteolin on the activity of voltage-gated potassium channels Kv1.3 was investigated in human leukemic Jurkat T cells. Electrophysiological measurements were accompanied by studies on the cytotoxic effect of the examined compounds on Jurkat T cells. Electrophysiological studies were performed using the whole-cell patch-clamp technique. Cell viability was determined using the MTT assay. 6-PR inhibited Kv1.3 channels in Jurkat T cells in a concentration-dependent manner. The estimated value of the half-blocking concentration (EC50) was about 5.76 µM. Among non-prenylated flavonoids, acacetin and chrysin inhibited Kv1.3 channels in Jurkat T cells when applied at the concentration of 30 µM, whereas baicalein, wogonin, and luteolin were ineffective at this concentration. The inhibitory effects of acacetin and chrysin on Kv1.3 channels were significantly less potent than the inhibition caused by 6-PR. All tested compounds inhibited growth of Jurkat T cells in a concentration-dependent manner. Wogonin and chrysin were the most cytotoxic flavonoids tested, whereas baicalein and 6-PR were the least cytotoxic compounds. In accordance to our hypothesis the prenylated flavonoid (6-PR) was much more effective inhibitor of Kv1.3 channels than non-prenylated compounds selected for this study. The inhibition of Kv1.3 channels by 6-PR, acacetin, and chrysin was not related to cytotoxicity of these compounds. The channels' inhibition might be involved in anti-proliferative and pro-apoptotic effects of 6-PR, acacetin and chrysin observed in cancer cell lines expressing these channels.
Collapse
Affiliation(s)
- Andrzej Teisseyre
- Department of Biophysics, Wroclaw Medical University, ul. Chałubińskiego 10, 50-368, Wrocław, Poland.
| | - Anna Palko-Labuz
- Department of Biophysics, Wroclaw Medical University, ul. Chałubińskiego 10, 50-368, Wrocław, Poland
| | - Anna Uryga
- Department of Biophysics, Wroclaw Medical University, ul. Chałubińskiego 10, 50-368, Wrocław, Poland
| | - Krystyna Michalak
- Department of Biophysics, Wroclaw Medical University, ul. Chałubińskiego 10, 50-368, Wrocław, Poland
| |
Collapse
|
18
|
Środa-Pomianek K, Michalak K, Świątek P, Poła A, Palko-Łabuz A, Wesołowska O. Increased lipid peroxidation, apoptosis and selective cytotoxicity in colon cancer cell line LoVo and its doxorubicin-resistant subline LoVo/Dx in the presence of newly synthesized phenothiazine derivatives. Biomed Pharmacother 2018; 106:624-636. [PMID: 29990852 DOI: 10.1016/j.biopha.2018.06.170] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 06/29/2018] [Accepted: 06/29/2018] [Indexed: 10/28/2022] Open
Abstract
Cancer cells often develop the resistance to pro-apoptotic signaling that makes them invulnerable to conventional treatment. Therapeutic strategies that make cancer cells enter the path of apoptosis are desirable due to the avoidance of inflammatory reaction that usually accompanies necrosis. In the present study phenothiazines (fluphenazine and four recently synthesized derivatives) were investigated in order to identify compounds with a potent anticancer activity. Since phenothiazines are known as multidrug resistance modulators the sensitive human colorectal adenocarcinoma cell line (LoVo) and its doxorubicin-resistant, ABCB1 overexpressing, subline (LoVo/Dx) have been employed as a model system. In studied cancer cells cytotoxic effect of the phenothiazine derivatives was accompanied by apoptosis and autophagy induction as well as by the increase of cellular lipid peroxidation and intracellular reactive oxygen species generation. Molecular modelling revealed that reactivity of phenothazines (manifested by their low energy gap) but not lipophilicity was positively correlated with their anticancer potency, pro-oxidant properties and apoptosis induction ability. Additionally, some of the studied compounds turned out to be more potent cytotoxic and pro-apoptotic agents in doxorubicin-resistant (LoVo/Dx) cells than in sensitive ones (LoVo). The hypothesis was assumed that studied phenothiazine derivatives induced apoptotic cell death by increasing the production of reactive oxygen species.
Collapse
Affiliation(s)
- Kamila Środa-Pomianek
- Department of Biophysics, Wroclaw Medical University, ul. Chalubinskiego 10, 50-368 Wroclaw, Poland.
| | - Krystyna Michalak
- Department of Biophysics, Wroclaw Medical University, ul. Chalubinskiego 10, 50-368 Wroclaw, Poland
| | - Piotr Świątek
- Department of Drug Chemistry, Wroclaw Medical University, ul. Borowska 211, 50-556 Wroclaw, Poland
| | - Andrzej Poła
- Department of Biophysics, Wroclaw Medical University, ul. Chalubinskiego 10, 50-368 Wroclaw, Poland
| | - Anna Palko-Łabuz
- Department of Biophysics, Wroclaw Medical University, ul. Chalubinskiego 10, 50-368 Wroclaw, Poland
| | - Olga Wesołowska
- Department of Biophysics, Wroclaw Medical University, ul. Chalubinskiego 10, 50-368 Wroclaw, Poland
| |
Collapse
|
19
|
Maniewska J, Gąsiorowska J, Szczęśniak-Sięga B, Michalak K. The interaction of new oxicam derivatives with lipid bilayers as measured by calorimetry and fluorescence spectroscopy. Acta Biochim Pol 2018; 65:185-191. [PMID: 29796443 DOI: 10.18388/abp.2018_2604] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 04/13/2018] [Accepted: 04/17/2018] [Indexed: 11/10/2022]
Abstract
The purpose of the present work was to assess the ability of five new oxicam analogues to interact with the lipid bilayers. To characterize the interaction of newly synthesized NSAIDs (non-steroidal anti-inflammatory drugs) analogues with DPPC lipid bilayers the two following techniques were applied - differential scanning calorimetry (DSC) and fluorescence spectroscopy. The results obtained by these experimental approaches show that new oxicams analogues interact with the lipid model membranes under consideration. As demonstrated both in calorimetric and spectroscopic studies, the greatest influence on the thermotropic properties of the lipid membrane and on the quenching of fluorescence of Laurdan and Prodan was exerted by a derivative named PR47 containing in its structure a two-carbon aliphatic linker with a carbonyl group, as well as bromine and trifluoromethyl substituents.
Collapse
Affiliation(s)
- Jadwiga Maniewska
- Department of Chemistry of Drugs, Wroclaw Medical University, Wrocław, Poland
| | | | | | - Krystyna Michalak
- Department of Biophysics, Wroclaw Medical University, Wrocław, Poland
| |
Collapse
|
20
|
Palko-Labuz A, Sroda-Pomianek K, Uryga A, Kostrzewa-Suslow E, Michalak K. Anticancer activity of baicalein and luteolin studied in colorectal adenocarcinoma LoVo cells and in drug-resistant LoVo/Dx cells. Biomed Pharmacother 2017; 88:232-241. [DOI: 10.1016/j.biopha.2017.01.053] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 01/09/2017] [Accepted: 01/09/2017] [Indexed: 01/01/2023] Open
|
21
|
Wiśniewski J, Wesołowska O, Środa-Pomianek K, Paprocka M, Bielawska-Pohl A, Krawczenko A, Duarte N, Ferreira MJU, Duś D, Michalak K. Euphorbia Species-derived Diterpenes and Coumarins as Multidrug Resistance Modulators in Human Colon Carcinoma Cells. Anticancer Res 2016; 36:2259-2264. [PMID: 27127131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 04/13/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND Recently, many new potent multidrug resistance (MDR) reversal agents have been discovered, among them lathyrane and jatrophane diterpenes isolated from various Euphorbia species. In the present study, the cytotoxicity, P-glycoprotein inhibition activity, and MDR reversal potency of six diterpenes and two coumarins from two Euphorbia species were studied in human colon carcinoma LoVo cells, and doxorubicin-resistant, LoVo/Dx cells. MATERIALS AND METHODS Cytotoxicity of the studied compounds (alone and in combination with doxorubicin) was investigated. Inhibition of P-glycoprotein transport activity was monitored by flow cytometry. Changes in intracellular doxorubicin accumulation were observed by means of fluorescence microscopy. RESULTS Latilagascene B was demonstrated to be an effective P-glycoprotein inhibitor, able to increase doxorubicin accumulation in resistant cells, however not able to restore doxorubicin cytotoxicity in LoVo/Dx cells. CONCLUSION The structure of latilagascene B seems to be an interesting candidate for further synthesis of new derivatives of reduced cytotoxicity and high anti-MDR potency.
Collapse
Affiliation(s)
- Jerzy Wiśniewski
- Department of Biophysics, Wrocław Medical University, Wrocław, Poland Department of Biochemistry, Wrocław Medical University, Wrocław, Poland
| | - Olga Wesołowska
- Department of Biophysics, Wrocław Medical University, Wrocław, Poland
| | | | - Maria Paprocka
- Laboratory of Glycobiology and Cellular Interactions, Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
| | - Aleksandra Bielawska-Pohl
- Laboratory of Glycobiology and Cellular Interactions, Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
| | - Agnieszka Krawczenko
- Laboratory of Glycobiology and Cellular Interactions, Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
| | - Noelia Duarte
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - Maria-José U Ferreira
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal
| | - Danuta Duś
- Laboratory of Glycobiology and Cellular Interactions, Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
| | - Krystyna Michalak
- Department of Biophysics, Wrocław Medical University, Wrocław, Poland
| |
Collapse
|
22
|
Gąsiorowska J, Teisseyre A, Uryga A, Michalak K. Inhibition of Kv1.3 Channels in Human Jurkat T Cells by Xanthohumol and Isoxanthohumol. J Membr Biol 2015; 248:705-11. [PMID: 25688010 PMCID: PMC4513206 DOI: 10.1007/s00232-015-9782-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Accepted: 07/15/2014] [Indexed: 01/05/2023]
Abstract
Using whole-cell patch-clamp technique, we investigated influence of selected compounds from groups of prenylated chalcones and flavonoids: xanthohumol and isoxanthohumol on the activity of Kv1.3 channels in human leukemic Jurkat T cells. Obtained results provide evidence that both examined compounds were inhibitors of Kv1.3 channels in these cells. The inhibitory effects occurred in a concentration-dependent manner. The estimated value of the half-blocking concentration (EC50) was about 3 μM for xanthohumol and about 7.8 μM for isoxanthohumol. The inhibition of Kv1.3 channels by examined compounds was not complete. Upon an application of the compounds at the maximal concentrations equal to 30 μM, the activity of Kv1.3 channels was inhibited to about 0.13 of the control value. The inhibitory effect was reversible. The application of xanthohumol and isoxanthohumol did not change the currents' activation and inactivation rate. These results may confirm our earlier hypothesis that the presence of a prenyl group in a molecule is a factor that facilitates the inhibition of Kv1.3 channels by compounds from the groups of flavonoids and chalcones. The inhibition of Kv1.3 channels might be involved in antiproliferative and proapoptotic effects of the compounds observed in cancer cell lines expressing these channels.
Collapse
Affiliation(s)
- Justyna Gąsiorowska
- Department of Biophysics, Wroclaw Medical University, ul. Chałubińskiego 10, 50-368 Wrocław, Poland
| | - Andrzej Teisseyre
- Department of Biophysics, Wroclaw Medical University, ul. Chałubińskiego 10, 50-368 Wrocław, Poland
| | - Anna Uryga
- Department of Biophysics, Wroclaw Medical University, ul. Chałubińskiego 10, 50-368 Wrocław, Poland
| | - Krystyna Michalak
- Department of Biophysics, Wroclaw Medical University, ul. Chałubińskiego 10, 50-368 Wrocław, Poland
| |
Collapse
|
23
|
Teisseyre A, Gąsiorowska J, Michalak K. Voltage-Gated Potassium Channels Kv1.3--Potentially New Molecular Target in Cancer Diagnostics and Therapy. ADV CLIN EXP MED 2015; 24:517-24. [PMID: 26467143 DOI: 10.17219/acem/22339] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Voltage-gated potassium channels, Kv1.3, which were discovered in 1984, are integral membrane proteins which are activated ("open") upon change of the cell membrane potential, enabling a passive flux of potassium ions across the cell membrane. The channels are expressed in many different tissues, both normal and cancer. Since 2005 it has been known that the channels are expressed not only in the plasma membrane, but also in the inner mitochondrial membrane. The activity of Kv1.3 channels plays an important role, among others, in setting the cell resting membrane potential, cell proliferation, apoptosis and volume regulation. For some years, these channels have been considered a potentially new molecular target in both the diagnostics and therapy of some cancer diseases. This review article focuses on: 1) changes of expression of the channels in cancer disorders with special regard to correlations between the channels' expression and stage of the disease, 2) influence of inhibitors of Kv1.3 channels on proliferation and apoptosis of cancer cells, 3) possible future applications of Kv1.3 channels' inhibitors in therapy of some cancer diseases. In the last section, the results of studies performed in our Laboratory of Bioelectricity on the influence of selected biologically active plant-derived compounds from the groups of flavonoids and stilbenes and their natural and synthetic derivatives on the activity of Kv1.3 channels in normal and cancer cells are reviewed. A possible application of some compounds from these groups to support therapy of cancer diseases, such as breast, colon and lymph node cancer, and melanoma or chronic lymphocytic leukemia (B-CLL), is announced.
Collapse
|
24
|
Środa-Pomianek K, Wesołowska O, Szczęśniak-Sięga B, Puła B, Dzięgiel P, Maniewska J, Malinka W, Palko-Łabuz A, Michalak K. Effect of new oxicam derivatives on efflux pumps overexpressed in resistant a human colorectal adenocarcinoma cell line. Anticancer Res 2015; 35:2835-2840. [PMID: 25964564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
BACKGROUND Oxicams are non-steroidal anti-inflammatory drugs (NSAIDs). Antitumor potential of NSAIDs has often been reported in literature. We studied antitumor activity of newly synthesized oxicam derivatives (PR17 and PR18) against doxorubicin-sensitive and resistant human colorectal adenocarcinoma cells (LoVo and LoVo/Dx). MATERIALS AND METHODS The cytotoxicity of oxicam derivatives alone and in combination with doxorubicin was assessed. Inhibition of P-glycoprotein (ABCB1) transport activity was monitored by flow cytometry. Expression of ABCB1 gene was analyzed by semi-quantitative reverse transcription PCR, while ABCB1 protein expression was assessed by western blotting. RESULTS Oxicam derivative PR18 was more cytotoxic to cancer cells than PR17. PR18 was observed to sensitize LoVo/Dx cells to doxorubicin and was identified as an effective multidrug resistance modulator. Additionally, ABCB1 expression was reduced in the presence of PR18. CONCLUSION PR18 was identified as an effective modulator in LoVo/Dx resistant human colorectal adenocarcinoma cells which overexpressed ABCB1 efflux pump.
Collapse
Affiliation(s)
| | - Olga Wesołowska
- Department of Biophysics, Wroclaw Medical University, Wroclaw, Poland
| | | | - Bartosz Puła
- Department of Histology and Embryology, Wroclaw Medical University, Wroclaw, Poland
| | - Piotr Dzięgiel
- Department of Histology and Embryology, Wroclaw Medical University, Wroclaw, Poland
| | - Jadwiga Maniewska
- Department of Chemistry of Drugs, Wroclaw Medical University, Wroclaw, Poland
| | - Wiesław Malinka
- Department of Chemistry of Drugs, Wroclaw Medical University, Wroclaw, Poland
| | - Anna Palko-Łabuz
- Department of Biophysics, Wroclaw Medical University, Wroclaw, Poland
| | - Krystyna Michalak
- Department of Biophysics, Wroclaw Medical University, Wroclaw, Poland
| |
Collapse
|
25
|
Szczęśniak-Sięga B, Maniewska J, Poła A, Środa-Pomianek K, Malinka W, Michalak K. Synthesis of new piroxicam derivatives and their influence on lipid bilayers. Acta Pol Pharm 2014; 71:1045-1050. [PMID: 25745777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A novel series of potentially biologically active 1,2-benzothiazine 1,1-dioxides--analogs of piroxicam (a recognized non-steroidal anti-inflammatory drug) were synthesized from commercially available saccharin. All of the synthesized compounds were subjected to preliminary evaluation for their ability to interact with lipid bilayers. The influence of the new derivatives of piroxicam on liposomes made of EYPC was investigated by fluorescence spectroscopy with two fluorescent probes--Laurdan and Prodan. All the studied compounds showed an interaction with model membranes.
Collapse
|
26
|
Maniewska J, Szczęśniak-Sięga B, Poła A, Sroda-Pomianek K, Malinka W, Michalak K. The interaction of new piroxicam analogues with lipid bilayers--a calorimetric and fluorescence spectroscopic study. Acta Pol Pharm 2014; 71:1004-1012. [PMID: 25856831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The purpose of the present paper was to assess the ability of new piroxicam analogues to interact with the lipid bilayers. The results of calorimetric and fluorescence spectroscopic experiments of two new synthesized analogues of piroxicam, named PR17 and PR18 on the phase behavior of phospholipid bilayers and fluorescence quenching of fluorescent probes (Laurdan and Prodan), which molecular location within membranes is known with certainty, are shown in present work. The presented results revealed that, depending on the details of chemical structure, the studied compounds penetrated the lipid bilayers.
Collapse
|
27
|
Yin Z, Pawełkowicz M, Michalak K, Chrzanowska M, Zimnoch-Guzowska E. Single-nucleotide polymorphisms and reading frame shifts in RNA2 recombinant regions of tobacco rattle virus isolates Slu24 and Deb57. Arch Virol 2014; 159:3119-23. [DOI: 10.1007/s00705-014-2128-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 05/22/2014] [Indexed: 11/27/2022]
|
28
|
Kostrzewa-Susłow E, Dmochowska-Gładysz J, Janeczko T, Środa K, Michalak K, Palko A. Microbial Transformations of 6- and 7-Methoxyflavones in Aspergillus niger and Penicillium chermesinum Cultures. ACTA ACUST UNITED AC 2014; 67:411-7. [DOI: 10.1515/znc-2012-7-809] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A detailed study of the biotransformation of 6- and 7-methoxyfl avones by four fungal strains (Aspergillus niger strains MB, KB, and SBP; Penicillium chermesinum 113) was carried out. Products of demethylation and also demethylation combined with hydroxylation at C-4’ were identifi ed. The biotransformation products were stronger antioxidants than the substrates.
Collapse
Affiliation(s)
- Edyta Kostrzewa-Susłow
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50 – 375 Wrocław, Poland
| | - Jadwiga Dmochowska-Gładysz
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50 – 375 Wrocław, Poland
| | - Tomasz Janeczko
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50 – 375 Wrocław, Poland
| | - Kamila Środa
- Department of Biophysics, Wrocław Medical University, Chałubińskiego 10, 50 – 368 Wrocław, Poland
| | - Krystyna Michalak
- Department of Biophysics, Wrocław Medical University, Chałubińskiego 10, 50 – 368 Wrocław, Poland
| | - Anna Palko
- Department of Biophysics, Wrocław Medical University, Chałubińskiego 10, 50 – 368 Wrocław, Poland
| |
Collapse
|
29
|
Michalak K, Wesolowska O. Polyphenols counteract tumor cell chemoresistance conferred by multidrug resistance proteins. Anticancer Agents Med Chem 2014; 12:880-90. [PMID: 22583399 DOI: 10.2174/187152012802650011] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2011] [Revised: 12/21/2011] [Accepted: 12/21/2011] [Indexed: 11/22/2022]
Abstract
One of the main reasons of cancer resistance to chemotherapeutic treatment is the presence of different ABC multidrug transporters in plasma membranes. The transporters extrude wide spectrum of anticancer agents out of cancer cells at the expense of energy derived from ATP-hydrolysis. Plant-origin polyphenolic compounds, mainly flavonoids and stilbenes or their synthetic derivatives, can modulate the main ABC transporters responsible for cancer drug resistance, including P-glycoprotein, MRP1 and BCRP. The recent studies on different resistant cancer cell lines enabled the discovery of a number of polyphenolic compounds able to reverse drug resistance in vitro and these compounds could be promising candidates for further clinical trials. The review summarizes the recent advances in the field of polyphenols interaction with ATP-binding cassette multidrug transporters. The mechanism of flavonoids interactions with the multidrug transporters and the structure-activity relationship are also discussed.
Collapse
Affiliation(s)
- Krystyna Michalak
- Wrocław Medical University, Department of Biophysics, ul. Chałubińskiego 10, 50-368 Wrocław, Poland.
| | | |
Collapse
|
30
|
Pola A, Mosiadz D, Saczko J, Modrzycka T, Michalak K. The influence of phenothiazine derivatives on intracellular accumulation of cationic cyanine dye DiOC6(3) in LoVo-DX cells. Anticancer Res 2013; 33:857-863. [PMID: 23482754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
AIM This study aimed to evaluate the influence of phenothiazine derivatives (PDs) on the intracellular accumulation of cyanine dye DiOC6(3) in doxorubicin-resistant LoVo-DX cell line, with overexpression of P-glycoprotein. MATERIALS AND METHODS In order to maintain a high expression level of P-gp, the LoVo-DX cells were grown in the presence of doxorubicin (100 ng/ml). The time-dependent fluorescence signal (T-DFS) of the intracellular accumulation of DiOC6(3), in the presence of PDs, was then recorded. The rate constants k1, k2, k3 and amplitudes of T-DFS, describing the intracellular accumulation process, were determined based on the respective theoretical equation. RESULTS The values of k1 and k2 were dependent on the hydrophobicity (logP) of the PDs used as drug resistance modulators. A rise of k1 and k2 values was observed when the logP of PDs increased. CONCLUSION We suggest that the k1 and k2 rate constants could be regarded as useful parameters for assessment of PDs as well as of other compounds of potential application as reversers of multidrug resistance.
Collapse
Affiliation(s)
- Andrzej Pola
- Department of Biophysics, Wrocław Medical University, ul. Chałubińskiego 9, 50-368 Wrocław, Poland.
| | | | | | | | | |
Collapse
|
31
|
Gąsiorowska J, Teisseyre A, Uryga A, Michalak K. The influence of 8-prenylnaringenin on the activity of voltage-gated Kv1.3 potassium channels in human Jurkat T cells. Cell Mol Biol Lett 2012; 17:559-70. [PMID: 22933043 PMCID: PMC6275880 DOI: 10.2478/s11658-012-0029-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2012] [Accepted: 08/23/2012] [Indexed: 12/25/2022] Open
Abstract
Using the whole-cell patch-clamp technique, we investigated the influence of 8-prenylnaringenin on the activity of the voltage-gated Kv1.3 potassium channels in the human leukemic T lymphocyte cell line Jurkat. 8-prenylnaringenin is a potent plant-derived phytoestrogen that has been found to inhibit cancer cell proliferation. The results show that it inhibited the Kv1.3 channels in a concentration-dependent manner. Complete inhibition occurred at concentrations higher than 10 μM. The inhibitory effect of 8-prenylnaringenin was reversible. It was accompanied by a significant acceleration of channel inactivation without any pronounced change in the activation rate. Of the naringenin derivatives tested to date, 8-prenylnaringenin is the most potent inhibitor of the Kv1.3 channels. The potency of the inhibition may be due to the presence of a prenyl group in the molecule of this flavonoid. The inhibition of the Kv1.3 channels might be involved in the antiproliferative and pro-apoptotic effects of 8-prenylnaringenin that have been observed in cancer cell lines expressing these channels.
Collapse
Affiliation(s)
- Justyna Gąsiorowska
- Department of Biophysics, Wrocław Medical University, ul. Chałubińskiego 10, 50-368 Wrocław, Poland
| | - Andrzej Teisseyre
- Department of Biophysics, Wrocław Medical University, ul. Chałubińskiego 10, 50-368 Wrocław, Poland
| | - Anna Uryga
- Department of Biophysics, Wrocław Medical University, ul. Chałubińskiego 10, 50-368 Wrocław, Poland
| | - Krystyna Michalak
- Department of Biophysics, Wrocław Medical University, ul. Chałubińskiego 10, 50-368 Wrocław, Poland
| |
Collapse
|
32
|
Wesołowska O, Wiśniewski J, Sroda-Pomianek K, Bielawska-Pohl A, Paprocka M, Duś D, Duarte N, Ferreira MJU, Michalak K. Multidrug resistance reversal and apoptosis induction in human colon cancer cells by some flavonoids present in citrus plants. J Nat Prod 2012; 75:1896-1902. [PMID: 23137376 DOI: 10.1021/np3003468] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Multidrug resistance (MDR) of cancer cells constitutes one of the main reasons for chemotherapy failure. The search for nontoxic modulators that reduce MDR is a task of great importance. An ability to enhance apoptosis of resistant cells would also be beneficial. In the present study, the MDR reversal and apoptosis-inducing potency of three flavonoids produced by Citrus plants, namely, naringenin (1a), aromadendrin (2), and tangeretin (3), and the methylated naringenin derivatives (1b, 1c), have been studied in sensitive (LoVo) and multidrug-resistant (LoVo/Dx) human colon adenocarcinoma cells. Cytotoxicity of methoxylated flavonoids was higher as compared to hydroxylated analogues. Only 3 turned out to inhibit P-glycoprotein, as demonstrated by a rhodamine 123 accumulation assay. It also increased doxorubicin accumulation in LoVo/Dx cells and enabled doxorubicin to enter cellular nuclei. In addition, 3 was found to be an effective MDR modulator in resistant cells by sensitizing them to doxorubicin. Tangeretin-induced caspase-3 activation and elevated surface phosphatidylserine exposure demonstrated its apoptosis-inducing activity in LoVo/Dx cells, while the other flavonoids evaluated were not active. Additionally, 3 was more toxic to resistant rather than to sensitive cancer cells. Its apoptosis-inducing activity was also higher in LoVo/Dx than in LoVo cells. It was concluded that the activity of 3 against multidrug-resistant cancer cells may be enhanced by its apoptosis-inducing activity.
Collapse
Affiliation(s)
- Olga Wesołowska
- Department of Biophysics, Wrocław Medical University , ul. Chałubińskiego 10, 50-368 Wrocław, Poland
| | | | | | | | | | | | | | | | | |
Collapse
|
33
|
Kolaczkowski M, Sroda-Pomianek K, Kolaczkowska A, Michalak K. A conserved interdomain communication pathway of pseudosymmetrically distributed residues affects substrate specificity of the fungal multidrug transporter Cdr1p. Biochim Biophys Acta 2012; 1828:479-90. [PMID: 23122779 DOI: 10.1016/j.bbamem.2012.10.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Revised: 09/19/2012] [Accepted: 10/21/2012] [Indexed: 11/19/2022]
Abstract
Understanding the communication pathways between remote sites in proteins is of key importance for understanding their function and mechanism of action. These remain largely unexplored among the pleiotropic drug resistance (PDR) representatives of the ubiquitous superfamily of ATP-binding cassette (ABC) transporters. To identify functionally coupled residues important for the polyspecific transport by the fungal ABC multidrug transporter Cdr1p a new selection strategy, towards increased resistance to a preferred substrate of the homologous Snq2p, was applied to a library of randomly generated mutants. The single amino acid substitutions, located pseudosymmetrically in each domain of the internally duplicated protein: the H-loop of the N-terminal nucleotide binding domain (NBD1) (C363R) and in the C-terminal NBD2 region preceding Walker A (V885G). The central regions of the first transmembrane helices 1 and 7 of both transmembrane domains were also affected by the G521S/D and A1208V substitutions respectively. Although the mutants were expressed at a similar level and located correctly to the plasma membrane, they selectively affected transport of multiple drugs, including azole antifungals. The synergistic effects of combined mutations on drug resistance, drug dependent ATPase activity and transport support the view inferred from the statistical coupling analysis (SCA) of aminoacid coevolution and mutational analysis of other ABC transporter families that these residues are an important part of the conserved, allosterically coupled interdomain communication network. Our results shed new light on the communication between the pseudosymmetrically arranged domains in a fungal PDR ABC transporter and reveal its profound influence on substrate specificity.
Collapse
Affiliation(s)
- Marcin Kolaczkowski
- Department of Biophysics, Wroclaw Medical University, PL-50-368 Wroclaw, Poland.
| | | | | | | |
Collapse
|
34
|
Petrus J, Czarnik-Matusewicz B, Jaszczyszyn A, Gąsiorowski K, Cieślik-Boczula K, Wesołowska O, Michalak K, Świątek P, Malinka W. Influence of fluphenazine dihydrochloride on model dipalmitoylphosphatidylcholine membranes and human genotoxically damaged lymphocyte cultures. Curr Issues Pharm Med Sci 2012. [DOI: 10.12923/j.2084-980x/25.3/a.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
|
35
|
Kostrzewa-Suslow E, Dmochowska-Gladysz J, Janeczko T, Sroda K, Michalak K, Palko A. Microbial Transformations of 6- and 7-Methoxyflavones in Aspergillus niger and Penicillium chermesinum Cultures. Z NATURFORSCH C 2012. [DOI: 10.5560/znc.2012.67c0411] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
36
|
Wesołowska O, Michalak K, Hendrich AB. Direct visualization of phase separation induced by phenothiazine-type antipsychotic drugs in model lipid membranes. Mol Membr Biol 2010; 28:103-14. [PMID: 21190429 DOI: 10.3109/09687688.2010.533706] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Lipid rafts constitute dynamic assemblies within a bilayer, engaged in, e.g., signal transduction, membrane trafficking and cell polarization. Despite wide interest in the process of domain formation in binary or ternary lipid model systems, only a limited number of papers are devoted to the influence of different additives on this process. In particular, works devoted to the role of drugs in raft formation are missing. In the present study, the influence of trifluoperazine, thioridazine and chlorpromazine on domain organization in raft-mimicking model membranes was investigated. Using giant unilamellar vesicles formed from an equimolar DOPC:sphingomyelin:cholesterol mixture, we found that phenothiazines elevated the number of domains, decreased their area and markedly increased the total length of the domain border. The impact of studied drugs on phase separation in the raft lipid mixture was also confirmed by Laurdan generalized polarization measurements. Alteration of domain organization induced by antipsychotic drugs was very likely to arise from selective accumulation of phenothiazines in interfacial regions between liquid ordered and liquid disordered domains. Interpretation of the results allowed us to demonstrate new aspects underlaying mechanisms of action of phenothiazine-type antipsychotic drugs. To the best of our knowledge, this is the first report demonstrating the influence of drugs on domain morphology directly visualized in giant unilamellar vesicles.
Collapse
Affiliation(s)
- Olga Wesołowska
- Department of Biophysics, Wrocław Medical University, Wrocław, Poland
| | | | | |
Collapse
|
37
|
Wang Q, Michalak K, Wesolowska O, Deli J, Molnar P, Hohmann J, Molnar J, Engi H. Reversal of Multidrug Resistance by Natural Substances from Plants. Curr Top Med Chem 2010; 10:1757-68. [DOI: 10.2174/156802610792928103] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2009] [Accepted: 03/09/2010] [Indexed: 11/22/2022]
|
38
|
Wesolowska O, Wisniewski J, Bielawska-Pohl A, Paprocka M, Duarte N, Ferreira MJU, Dus D, Michalak K. Stilbenes as multidrug resistance modulators and apoptosis inducers in human adenocarcinoma cells. Anticancer Res 2010; 30:4587-4593. [PMID: 21115910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
BACKGROUND The search for promising modulators of cancer multidrug resistance (MDR) that are able to reduce the activity of P-glycoprotein, thus restoring the cytotoxicity of anticancer drugs, is ongoing. The identification of compounds that overcome the apoptosis deficiency that frequently accompanies MDR is also of great therapeutic importance. MATERIALS AND METHODS Four stilbenes, resveratrol, piceatannol and its two derivatives, were tested for their MDR-modulating and apoptosis-inducing activity in drug-sensitive (LoVo) and doxorubicin-resistant human adenocarcinoma cell line (LoVo/Dx) by means of flow cytometry and fluorescence microscopy. RESULTS Trans-3,5,3',4'-tetramethoxystilbene (PicMet) was identified as a promising modulator that efficiently increased accumulation of both rhodamine 123 and doxorubicin inside resistant cells. It also increased sensitivity of LoVo/Dx cells to doxorubicin. Resveratrol and trans-3,5,3',4'-tetracetoxystilbene (PicAcet) were identified as apoptosis inducers in LoVo/Dx cells. CONCLUSION The stilbene structure may constitute a promising chemical scaffold for the synthesis of potential MDR modulators.
Collapse
Affiliation(s)
- Olga Wesolowska
- Department of Biophysics, Wrocław Medical University, 50-368 Wrocław, Poland.
| | | | | | | | | | | | | | | |
Collapse
|
39
|
Wesołowska O, Molnar J, Ocsovszki I, Michalak K. Differential effect of phenothiazines on MRP1 and P-glycoprotein activity. In Vivo 2009; 23:943-947. [PMID: 20023237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
BACKGROUND Overexpression of ATP-binding cassette (ABC) transporters such as P-glycoprotein (P-gp), multidrug resistance-associated protein 1 (MRP1) or breast cancer resistance protein (BCRP) accounts for majority of cases of multidrug resistance (MDR) of cancer cells. MATERIALS AND METHODS In the present work, the interactions of seven commercially available phenothiazine derivatives, known P-glycoprotein inhibitors, with this transporter and MRP1 were compared. By flow cytometry, it was shown that all the drugs increased the accumulation of rhodamine 123 in the P-gp-overexpressing lymphoma cell line L5178 MDR. On the other hand, phenothiazine derivatives stimulated MRP1-mediated efflux of fluorescent probe (BCPCF) out of human erythrocytes. RESULTS In this way, these phenothiazine derivatives were identified as a group of atypical MDR modulators that differently interact with P-gp (as inhibitors) and MRP1 (as stimulators). CONCLUSION This observation clearly shows that the activity of all new modulators should be tested for their effects towards different ABC transporters as a standard procedure.
Collapse
Affiliation(s)
- Olga Wesołowska
- Department of Biophysics, Wrocław Medical University, Wrocław, Poland.
| | | | | | | |
Collapse
|
40
|
Kolaczkowski M, Kolaczkowska A, Sroda K, Ramalhete C, Michalak K, Mulhovo S, Ferreira MJU. Substrates and modulators of the multidrug transporter Cdr1p of Candida albicans in antifungal extracts of medicinal plants. Mycoses 2009; 53:305-10. [PMID: 19460101 DOI: 10.1111/j.1439-0507.2009.01711.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The effective treatment of infections caused by the most frequent human fungal pathogens Candida albicans and Candida glabrata is hindered by a limited number of available antifungals and development of resistance. In this study, we identified new extracts of medicinal plants inhibiting the growth of C. glabrata, a species generally showing low sensitivity to azoles. The methanolic extract of Anacardium occidentalis with an MIC of 80 microg ml(-1) proved to be the most active. In contrast to higher azole sensitivity, C. albicans showed increased resistance to several extracts. Investigation of the possible contribution of the multidrug transporter of the ATP-binding cassette superfamily Cdr1p of C. albicans to extract tolerance revealed a differential response upon overproduction of this protein in Saccharaomyces cerevisiae. Whereas the growth inhibitory activity of many extracts was not affected by CDR1 overexpression, increased sensitivity to some of them was observed. In contrast, extracts showing no detectable anticandidal activity including the ethyl acetate extract of Trichilia emetica were detoxified by Cdr1p. The presence of a non-toxic Cdr1p-mediated ketoconazole resistance modulator accompanying growth-inhibitory Cdr1p substrates in this extract was revealed by further fractionation experiments.
Collapse
|
41
|
Wesołowska O, Michalak K, Maniewska J, Hendrich AB. Giant unilamellar vesicles - a perfect tool to visualize phase separation and lipid rafts in model systems. Acta Biochim Pol 2009. [DOI: 10.18388/abp.2009_2514] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Model systems such as black lipid membranes or conventional uni- or multilamellar liposomes are commonly used to study membrane properties and structure. However, the construction and dimensions of these models excluded their direct optical microscopic observation. Since the introduction of the simple method of liposome electroformation in alternating electric field giant unilamellar vesicles (GUVs) have become an important model imitating biological membranes. Due to the average diameter of GUVs reaching up to 100 microm, they can be easily observed under a fluorescent or confocal microscope provided that the appropriate fluorescent probe was incorporated into the lipid phase during vesicle formation. GUVs can be formed from different lipid mixtures and they are stable in a wide range of physical conditions such as pH, pressure or temperature. This mini-review presents information about the methods of GUV production and their usage. Particularly, the use of GUVs in studying lipid phase separation and the appearance and behavior of lipid domains (rafts) in membranes is discussed but also other examples of GUVs use in membrane research are given. The experience of the authors in setting up the GUV-forming equipment and production of GUVs is also presented.
Collapse
|
42
|
Wesołowska O, Michalak K, Maniewska J, Hendrich AB. Giant unilamellar vesicles - a perfect tool to visualize phase separation and lipid rafts in model systems. Acta Biochim Pol 2009; 56:33-39. [PMID: 19287805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2009] [Revised: 03/10/2009] [Accepted: 03/13/2009] [Indexed: 05/27/2023]
Abstract
Model systems such as black lipid membranes or conventional uni- or multilamellar liposomes are commonly used to study membrane properties and structure. However, the construction and dimensions of these models excluded their direct optical microscopic observation. Since the introduction of the simple method of liposome electroformation in alternating electric field giant unilamellar vesicles (GUVs) have become an important model imitating biological membranes. Due to the average diameter of GUVs reaching up to 100 microm, they can be easily observed under a fluorescent or confocal microscope provided that the appropriate fluorescent probe was incorporated into the lipid phase during vesicle formation. GUVs can be formed from different lipid mixtures and they are stable in a wide range of physical conditions such as pH, pressure or temperature. This mini-review presents information about the methods of GUV production and their usage. Particularly, the use of GUVs in studying lipid phase separation and the appearance and behavior of lipid domains (rafts) in membranes is discussed but also other examples of GUVs use in membrane research are given. The experience of the authors in setting up the GUV-forming equipment and production of GUVs is also presented.
Collapse
Affiliation(s)
- Olga Wesołowska
- Department of Biophysics, Wrocław Medical University, Wrocław, Poland
| | | | | | | |
Collapse
|
43
|
Teisseyre A, Duarte N, Ferreira MJU, Michalak K. Influence of the multidrug transporter inhibitors on the activity of Kv1.3 voltage-gated potassium channels. J Physiol Pharmacol 2009; 60:69-76. [PMID: 19439809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/10/2008] [Accepted: 02/20/2009] [Indexed: 05/27/2023]
Abstract
Using the whole-cell patch-clamp technique, the influence of selected multidrug resistance modulators, both plant-derived compounds and derivatives on the activity of voltage-gated potassium channels Kv1.3 was investigated. Twelve compounds with phenolic and terpenic structures were tested: the stilbenes piceatannol (1) and its tetramethoxy (2) and tetracetoxy (3) derivatives, the flavonoids naringenin (4) and its methylated derivatives: naringenin-4',7-dimethylether (5) and naringenin-7-methylether (6), and aromadendrin (7), the coumarins esculetin (8) and scopoletin (9) and ent-abietane diterpenes, helioscopinolide B (10) and its 3beta-acetoxy derivative (11) and helioscopinolide E (12). The studies were performed on a model system with Kv1.3 channels endogenously expressed in human T lymphocytes. Obtained data provide evidence that compounds 2, 5 and 6 applied at 30 microM inhibited the amplitude of recorded currents to 31%, 4% and 29% of its control value, respectively. On the other hand, compounds 3, 4, 7-12 (at 30 microM) and compound 1 (at 40 microM) did not affect significantly the channel activity. These results indicate that some methoxy-derivatives of the tested compounds are effective inhibitors of Kv1.3 channels. Since the inhibition of Kv1.3 channels may inhibit the proliferation of prostate, breast and colon cancer cells expressing these channels, the channel inhibitors may exert an antiproliferative action. This action combined with a simultaneous modulation of the multidrug resistance may be significant for a potential application of these compounds in cancer chemotherapy.
Collapse
Affiliation(s)
- A Teisseyre
- Wroclaw Medical University, Department of Biophysics, ul. Chalubinskiego 10, Wroclaw, Poland.
| | | | | | | |
Collapse
|
44
|
Środa K, Michalak K, Maniewska J, Grynkiewicz G, Szeja W, Zawisza J, Hendrich AB. Genistein derivatives decrease liposome membrane integrity — Calcein release and molecular modeling study. Biophys Chem 2008; 138:78-82. [DOI: 10.1016/j.bpc.2008.09.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2008] [Revised: 09/02/2008] [Accepted: 09/03/2008] [Indexed: 11/30/2022]
|
45
|
Wesołowska O, Hendrich AB, Łaniapietrzak B, Wiśniewski J, Molnar J, Ocsovszki I, Michalak K. Perturbation of the lipid phase of a membrane is not involved in the modulation of MRP1 transport activity by flavonoids. Cell Mol Biol Lett 2008; 14:199-221. [PMID: 19020811 PMCID: PMC6275984 DOI: 10.2478/s11658-008-0044-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2008] [Accepted: 09/03/2008] [Indexed: 11/20/2022] Open
Abstract
The expression of transmembrane transporter multidrug resistance-associated protein 1 (MRP1) confers the multidrug-resistant phenotype (MDR) on cancer cells. Since the activity of the other MDR transporter, P-glycoprotein, is sensitive to membrane perturbation, we aimed to check whether the changes in lipid bilayer properties induced by flavones (apigenin, acacetin) and flavonols (morin, myricetin) were related to their MRP1 inhibitory activity. All the flavonoids inhibited the efflux of MRP1 fluorescent substrate from human erythrocytes and breast cancer cells. Morin was also found to stimulate the ATPase activity of erythrocyte ghosts. All flavonoids intercalated into phosphatidylcholine bilayers as judged by differential scanning calorimetry and fluorescence spectroscopy with the use of two carbocyanine dyes. The model of an intramembrane localization for flavones and flavonols was proposed. No clear relationship was found between the membrane-perturbing activity of flavonoids and their potency to inhibit MRP1. We concluded that mechanisms other than perturbation of the lipid phase of membranes were responsible for inhibition of MRP1 by the flavonoids.
Collapse
Affiliation(s)
- Olga Wesołowska
- Department of Biophysics, Wrocław Medical University, ul. Chałubińskiego 10, 50-368 Wrocław, Poland.
| | | | | | | | | | | | | |
Collapse
|
46
|
Wesolowska O, Wisniewski J, Duarte N, Ferreira MJU, Michalak K. Inhibition of MRP1 transport activity by phenolic and terpenic compounds isolated from Euphorbia species. Anticancer Res 2007; 27:4127-4133. [PMID: 18225583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
BACKGROUND A search for inhibitors of multidrug resistance (MDR)-associated protein 1 (MRP1) was performed among the compounds isolated from Euphorbia species, plants traditionally used in folk medicine. MATERIALS AND METHODS Fifteen compounds with terpenic or phenolic structures (macrocyclic and polycyclic diterpenes, coumarins, stilbenes and flavonoids) were isolated from the methanol extracts of Euphorbia lagascae and Euphorbia tuckeyana or obtained by derivatization. A functional test based on measuring the efflux of fluorescent MRP1 substrate (BCECF) from human erythrocytes was employed. RESULTS Effective MRP1 inhibitors were identified among the stilbenes (piceatannol and its derivatives) and the flavonoids (aromadendrin, naringenin and its derivatives). CONCLUSION Euphorbia species constitute a promising source of multidrug resistance modulators.
Collapse
Affiliation(s)
- Olga Wesolowska
- Department of Biophysics, Wroclaw Medical University, ul. Chalubinskiego 10, 50-368 Wroclaw, Poland.
| | | | | | | | | |
Collapse
|
47
|
Hendrich AB, Michalak K, Wesołowska O. Phase separation is induced by phenothiazine derivatives in phospholipid/sphingomyelin/cholesterol mixtures containing low levels of cholesterol and sphingomyelin. Biophys Chem 2007; 130:32-40. [PMID: 17662517 DOI: 10.1016/j.bpc.2007.07.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2007] [Revised: 07/02/2007] [Accepted: 07/03/2007] [Indexed: 11/20/2022]
Abstract
Lipid rafts are membrane structures enriched in cholesterol, sphingomyelin and glycolipids. In majority raft-mimicking model systems high contents of cholesterol and sphingomyelin (approximately 30 mol%) are used. Existence of raft-like structures was, however, reported also in model and natural membranes containing low levels of cholesterol and sphingomyelin. In the present work differential scanning calorimetry and fluorescence spectroscopy with the use of Laurdan probe was employed to demonstrate the existence of phase separation in model systems containing DPPC with addition of 5 mol% or 10 mol% of both cholesterol and sphingomyelin. Additionally, the influence of three phenothiazine derivatives on phase separation in mixed DPPC/cholesterol/sphingomyelin bilayers was investigated. Chlorpromazine, thioridazine and trifluoperazine were able to induce phase separation in DPPC and DPPC/cholesterol/sphingomyelin bilayers in temperatures below lipid main phase transition. However, only trifluoperazine induced phase separation in temperatures close to or above main phase transition. Trifluoperazine also induced phase separation in bilayers composed of egg yolk PC or DOPC mixed with cholesterol and sphingomyelin. We concluded that presence of lipid domains can be observed in model membranes containing low levels of cholesterol and sphingomyelin. Among three phenothiazine derivatives studied, only trifluoperazine was able to induce a permanent phase separation in phosphatidylcholine/cholesterol/sphingomyelin systems.
Collapse
Affiliation(s)
- Andrzej B Hendrich
- Department of Biophysics, Wrocław Medical University, ul. Chałubińskiego 10, 50-368 Wrocław, Poland.
| | | | | |
Collapse
|
48
|
Teisseyre A, Michalak K. Inhibition of the Activity of Human Lymphocyte Kv1.3 Potassium Channels by Resveratrol. J Membr Biol 2007; 214:123-9. [PMID: 17557164 DOI: 10.1007/s00232-007-0043-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2006] [Revised: 10/25/2006] [Indexed: 01/15/2023]
Abstract
The whole-cell patch-clamp technique was applied to study the modulatory effect of resveratrol on voltage-gated potassium channel Kv1.3 expressed in human lymphocytes. Results demonstrate that application of resveratrol in the concentration range 1-200 muM: inhibited the channel activity in a concentration-dependent manner to about 18% of the control value. The half-blocking concentration of resveratrol was 40.9 microM: , whereas the Hill coefficient was 1.05. The inhibition was time-dependent and slowly reversible. The inhibitory effect of resveratrol was correlated in time with a significant slowing of the current activation, whereas the inactivation rate remained unaffected upon application of resveratrol. The inhibition of Kv1.3 channels was voltage-independent. The steady-state activation of the currents remained unchanged upon resveratrol application. The magnitude of the inhibitory effect of resveratrol was not altered when resveratrol was coapplied with genistein. The possible mechanism of the inhibitory effect and its significance for biological activity of resveratrol are discussed.
Collapse
Affiliation(s)
- Andrzej Teisseyre
- Department of Biophysics, Wrocław Medical University, ul. Chałubińskiego 10, 50-368, Wrocław, Poland.
| | | |
Collapse
|
49
|
Wesołowska O, Łania-Pietrzak B, Kuzdzał M, Stanczak K, Mosiadz D, Dobryszycki P, Ozyhar A, Komorowska M, Hendrich AB, Michalak K. Influence of silybin on biophysical properties of phospholipid bilayers. Acta Pharmacol Sin 2007; 28:296-306. [PMID: 17241534 DOI: 10.1111/j.1745-7254.2007.00487.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
AIM Silybin (silibinin) is major biologically active flavonolignan extracted from milk thistle (Sylibum marianum). Its biological activities include hepato-protection, anticancer properties, and antioxidant- and membrane-stabilizing functions. Although membranes are postulated to be one of the cellular targets for silybin, little is known about its interaction with phospholipid bilayers. METHODS In the present work, the interactions of silybin with phosphatidylcholine bilayers were studied in detail using fluorescence spectroscopy, microcalorimetry and electron spin resonance techniques. RESULTS The results showed that silybin interacted with the surface of lipid bilayers. It affected the generalized polarization of the fluorescent probe Prodan, while not influencing the more deeply located Laurdan. Silybin lowered the main phospholipid phase transition temperature as judged by microcalorimetry, and caused the immobilization of spin probe Tempo-palmitate located on the surface of membranes. The mobility of spin probes 5- and 16-doxyl stearic acid was not affected by silybin. Silybin-induced quenching of 1,6-diphenyl-1,3,5-hexatriene fluorescence indicated that some flavonoid molecules partitioned into the hydrophobic region of membranes, which did not change significantly the biophysical properties of the deeper membrane regions. CONCLUSION Such a behavior of silybin in membranes is in accordance with its postulated biological functions and neglectable side effects of therapies using silybin.
Collapse
Affiliation(s)
- Olga Wesołowska
- Department of Biophysics, Wroclaw Medical University, ul Chalubinskiego 10, 50-368 Wroclaw, Poland.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Hendrich AB, Stańczak K, Komorowska M, Motohashi N, Kawase M, Michalak K. A study on the perturbation of model lipid membranes by phenoxazines. Bioorg Med Chem 2006; 14:5948-54. [PMID: 16735123 DOI: 10.1016/j.bmc.2006.05.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2006] [Revised: 05/09/2006] [Accepted: 05/15/2006] [Indexed: 10/24/2022]
Abstract
The interactions of six newly synthesized phenoxazine derivatives with lipid bilayers were studied by means of calorimetry, fluorescence spectroscopic methods and electron spin resonance. Depending on their structure studied compounds decreased membrane fluidity and increased lipid order in liquid-crystalline bilayers to different degrees. These studies showed also that phenoxazine molecules are located close to the polar/apolar interface of bilayer. The results allow to conclude that phenoxazines rather weakly interact with lipid bilayers.
Collapse
|