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Kanabekova P, Dauletkanov B, Bekezhankyzy Z, Toktarkan S, Martin A, Pham TT, Kostas K, Kulsharova G. A hybrid fluorescent nanofiber membrane integrated with microfluidic chips towards lung-on-a-chip applications. Lab Chip 2024; 24:224-233. [PMID: 38053518 DOI: 10.1039/d3lc00751k] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Here, we report a fluorescent electrospun nanofiber membrane for integration into microfluidic devices towards lung-on-a-chip applications complemented with the results of computational fluid dynamics modelling. A proposed hybrid poly(ε-caprolactone) (PCL)-collagen membrane was developed, characterized, tested, and integrated into a prototype microfluidic chip for biocompatibility studies. The resulting membrane has a thickness of approximately 10 μm, can be adjusted for appropriate porosity, and offers excellent biocompatibility for mimicry of a basement membrane to be used in lung-on-a-chip device applications. Several membrane variations were synthesized and evaluated using SEM, FTIR, AFM, and high-resolution confocal fluorescence microscopy. A sample microfluidic chip made of cyclic olefin copolymer and polydimethylsiloxane was built and integrated with the developed PCL-collagen membrane for on-chip cell culture visualisation and biocompatibility studies. The sample chip design was modelled to determine the optimal fluidic conditions for using the membrane in the chip under fluidic conditions for future studies. The integration of the proposed membrane into microfluidic devices represents a novel strategy for improving lung-on-a-chip applications which can enhance laboratory recapitulation of the lung microenvironment.
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Affiliation(s)
- Perizat Kanabekova
- Department of Electrical and Computer Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan.
| | - Bereke Dauletkanov
- Department of Electrical and Computer Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan.
| | - Zhibek Bekezhankyzy
- Department of Electrical and Computer Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan.
| | - Sultanali Toktarkan
- Department of Electrical and Computer Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan.
| | - Alma Martin
- Department of Electrical and Computer Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan.
| | - Tri T Pham
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Astana 010000, Kazakhstan
| | - Konstantinos Kostas
- Department of Mechanical and Aerospace Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan
| | - Gulsim Kulsharova
- Department of Electrical and Computer Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana 010000, Kazakhstan.
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Nurzhan S, Bekezhankyzy Z, Ding H, Berdigaliyev N, Sergazy S, Gulyayev A, Shulgau Z, Triggle CR, Aljofan M. The Effect of Different Glucose Concentrations on the Antiproliferative Activity of Metformin in MCF-7 Breast Cancer Cells. Pharmaceutics 2023; 15:2186. [PMID: 37765157 PMCID: PMC10537756 DOI: 10.3390/pharmaceutics15092186] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 08/17/2023] [Accepted: 08/17/2023] [Indexed: 09/29/2023] Open
Abstract
The glucose-lowering drug metformin has been reported to have anticancer properties through unknown mechanisms. Other unknown factors that may influence its anticancer potential include the glycemic status of the patient. Therefore, the objective of this study is to determine the effect of different glucose environments on the antiproliferative potency and the cellular mechanism of action of metformin. Human breast cancer cells, MCF-7, were incubated in low, normal, elevated, and high glucose environments and treated with metformin. The antiproliferative potential of metformin and its effect on protein expression as well as its ability to induce cellular apoptosis and autophagy under different glucose environments, were determined using different molecular techniques. Metformin significantly inhibited cellular proliferation in a time- and glucose-concentration-dependent manner. In comparison to elevated glucose, low normal glucose alone induced a significant level of autophagy that was further increased in the presence of metformin. While glucose concentration did not appear to have an effect on the antiproliferative potency of metformin, the cellular basis of action was shown to be glucose-dependent. The antiproliferative mechanism of action of metformin in elevated and low normal glucose environments is mTOR-dependent, whereas, in the high glucose environment, the antiproliferative mechanism is independent of mTOR. This is the first study to report that both the antiproliferative potency and the cellular mechanism of action aredependent on the concentration of glucose.
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Affiliation(s)
- Sholpan Nurzhan
- Department of Biomedical Sciences, School of Medicine, Nazarbayev University, Astana Z05H0P9, Kazakhstan; (S.N.); (Z.B.); (N.B.)
- National Center for Biotechnology, Astana Z05K8D5, Kazakhstan; (S.S.); (A.G.)
| | - Zhibek Bekezhankyzy
- Department of Biomedical Sciences, School of Medicine, Nazarbayev University, Astana Z05H0P9, Kazakhstan; (S.N.); (Z.B.); (N.B.)
- National Center for Biotechnology, Astana Z05K8D5, Kazakhstan; (S.S.); (A.G.)
| | - Hong Ding
- Department of Pharmacology, Weill Cornell Medicine in Qatar, Education City, Doha P.O. Box 24144, Qatar; (H.D.); (C.R.T.)
| | - Nurken Berdigaliyev
- Department of Biomedical Sciences, School of Medicine, Nazarbayev University, Astana Z05H0P9, Kazakhstan; (S.N.); (Z.B.); (N.B.)
- National Center for Biotechnology, Astana Z05K8D5, Kazakhstan; (S.S.); (A.G.)
| | - Shynggys Sergazy
- National Center for Biotechnology, Astana Z05K8D5, Kazakhstan; (S.S.); (A.G.)
- Drug Discovery and Development Laboratory, National Laboratory Astana, Nazarbayev University, Astana Z05H0P9, Kazakhstan
- Research Institute of Balneology and Medical Rehabilitation, Akmola Region, Burabay 021708, Kazakhstan
| | - Alexander Gulyayev
- National Center for Biotechnology, Astana Z05K8D5, Kazakhstan; (S.S.); (A.G.)
- Drug Discovery and Development Laboratory, National Laboratory Astana, Nazarbayev University, Astana Z05H0P9, Kazakhstan
- Research Institute of Balneology and Medical Rehabilitation, Akmola Region, Burabay 021708, Kazakhstan
| | - Zarina Shulgau
- National Center for Biotechnology, Astana Z05K8D5, Kazakhstan; (S.S.); (A.G.)
- Drug Discovery and Development Laboratory, National Laboratory Astana, Nazarbayev University, Astana Z05H0P9, Kazakhstan
| | - Christopher R. Triggle
- Department of Pharmacology, Weill Cornell Medicine in Qatar, Education City, Doha P.O. Box 24144, Qatar; (H.D.); (C.R.T.)
| | - Mohamad Aljofan
- Department of Biomedical Sciences, School of Medicine, Nazarbayev University, Astana Z05H0P9, Kazakhstan; (S.N.); (Z.B.); (N.B.)
- Drug Discovery and Development Laboratory, National Laboratory Astana, Nazarbayev University, Astana Z05H0P9, Kazakhstan
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Bekezhankyzy Z, Nurzhan S, Berdigaliyev N, Sergazy S, Maulenkul T, Aljofan M. The antiproliferative potential and mechanism of action of metformin in MCF-7 cells. Future Sci OA 2023; 9:FSO859. [PMID: 37180606 PMCID: PMC10167719 DOI: 10.2144/fsoa-2022-0080] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 03/03/2023] [Indexed: 05/16/2023] Open
Abstract
Aim The current study aimed to investigate the potential antiproliferative activity of metformin, the effective concentration range, and the mechanism of action. Materials & methods Human breast cancer cells, MCF-7 were treated with a serial dilution of metformin (10-150 μM) for 24 and 48 h. Potential antiproliferative activity of metformin and its ability in inducing cellular apoptosis and autophagy were also investigated. Results Metformin inhibited MCF-7 proliferation in a concentration and time dependent manner, with 80 μM as the most effective concentration. Compared with nontreated cells, metformin induced significant levels of autophagy and apoptosis, which were confirmed by the reduction of mTOR and BCL-2 protein expression. Conclusion The study confirms the antiproliferative activity of metformin, which may likely occur through AMPK signaling pathway.
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Affiliation(s)
- Zhibek Bekezhankyzy
- Department of Biomedical Sciences, School of Medicine, Nazarbayaev University, Astana, 010000, Kazakhstan
| | - Sholpan Nurzhan
- Department of Biomedical Sciences, School of Medicine, Nazarbayaev University, Astana, 010000, Kazakhstan
| | - Nurken Berdigaliyev
- Department of Biomedical Sciences, School of Medicine, Nazarbayaev University, Astana, 010000, Kazakhstan
| | - Shynggys Sergazy
- National Laboratory Astana, Nazarbayev University, Astana, 010000, Kazakhstan
| | - Tilektes Maulenkul
- Khoja Akhmet Yassawi International Kazakh-Turkish University, Turkistan, 161211, Turkistan, Kazakhstan
| | - Mohamad Aljofan
- Department of Biomedical Sciences, School of Medicine, Nazarbayaev University, Astana, 010000, Kazakhstan
- National Laboratory Astana, Nazarbayev University, Astana, 010000, Kazakhstan
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Amouei Torkmahalleh M, Naseri M, Nurzhan S, Gabdrashova R, Bekezhankyzy Z, Gimnkhan A, Malekipirbazari M, Jouzizadeh M, Tabesh M, Farrokhi H, Mehri-Dehnavi H, Khanbabaie R, Sadeghi S, Khatir AA, Sabanov S, Buonanno G, Hopke PK, Cassee F, Crape B. Human exposure to aerosol from indoor gas stove cooking and the resulting nervous system responses. Indoor Air 2022; 32:e12983. [PMID: 35037300 DOI: 10.1111/ina.12983] [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] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 12/08/2021] [Accepted: 12/24/2021] [Indexed: 06/14/2023]
Abstract
Our knowledge of the effects of exposure to indoor ultrafine particles (sub-100 nm, #/cm3 ) on human brain activity is very limited. The effects of cooking ultrafine particles (UFP) on healthy adults were assessed using an electroencephalograph (EEGs) for brain response. Peak ultrafine particle concentrations were approximately 3 × 105 particle/cm3, and the average level was 1.64 × 105 particle/cm3 . The average particle number emission rate (S) and the average number decay rate (a+k) for chicken frying in brain experiments were calculated to be 2.82 × 1012 (SD = 1.83 × 1012 , R2 = 0.91, p = 0.0013) particles/min, 0.47 (SD = 0.30, R2 = 0.90, p < 0.0001) min-1 , respectively. EEGs were recorded before and during cooking (14 min) and 30 min after the cooking sessions. The brain fast-wave band (beta) decreased during exposure, similar to people with neurodegenerative diseases. It subsequently increased to its pre-exposure condition for 70% of the study participants after 30 min. The brain slow-wave band to fast-wave band ratio (theta/beta ratio) increased during and after exposure, similar to observed behavior in early-stage Alzheimer's disease (AD) patients. The brain then tended to return to its normal condition within 30 min following the exposure. This study suggests that chronically exposed people to high concentrations of cooking aerosol might progress toward AD.
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Affiliation(s)
- Mehdi Amouei Torkmahalleh
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan, Kazakhstan
| | - Motahareh Naseri
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan, Kazakhstan
| | - Sholpan Nurzhan
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan, Kazakhstan
| | - Raikhangul Gabdrashova
- Department of Biology, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan, Kazakhstan
| | - Zhibek Bekezhankyzy
- Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan, Kazakhstan
| | - Aidana Gimnkhan
- Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan, Kazakhstan
| | | | - Mojtaba Jouzizadeh
- Department of Physics, Neuroscience Laboratory, Babol Noshirvani University of Technology, Babol, Iran
| | - Mahsa Tabesh
- Department of Physics, Neuroscience Laboratory, Babol Noshirvani University of Technology, Babol, Iran
| | - Hamta Farrokhi
- Department of Physics, Neuroscience Laboratory, Babol Noshirvani University of Technology, Babol, Iran
| | - Hossein Mehri-Dehnavi
- Department of Physics, Neuroscience Laboratory, Babol Noshirvani University of Technology, Babol, Iran
| | - Reza Khanbabaie
- Department of Physics, Neuroscience Laboratory, Babol Noshirvani University of Technology, Babol, Iran
| | - Sahar Sadeghi
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan, Kazakhstan
- Biomedical Engineering Team, Haj Azizi Hospital, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ali Alizadeh Khatir
- Department of Neurology, School of Medicine, Babol University of Medical Sciences, Babol, Iran
- Mobility Impairment Research Center, Babol University of Medical Sciences, Babol, Iran
- Clinical Research Development Unite of Rouhani Hospital, Babol University of Medical Sciences, Babol, Iran
| | - Sergei Sabanov
- Department of Mining, School of Mining and Geosciences, Nur-Sultan, Kazakhstan
| | - Giorgio Buonanno
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Cassino, Italy
| | - Philip K Hopke
- Department of Public Health Sciences, University of Rochester Medical Center, Rochester, New York, USA
| | - Flemming Cassee
- National Institute for Public Health and the Environment, Bilthoven, The Netherlands
| | - Byron Crape
- Department of Medicine, School of Medicine, Nazarbayev University, Nur-Sultan, Kazakhstan
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Gabdrashova R, Nurzhan S, Naseri M, Bekezhankyzy Z, Gimnkhan A, Malekipirbazari M, Tabesh M, Khanbabaie R, Crape B, Buonanno G, Hopke PK, Amouei Torkmahalleh A, Amouei Torkmahalleh M. The impact on heart rate and blood pressure following exposure to ultrafine particles from cooking using an electric stove. Sci Total Environ 2021; 750:141334. [PMID: 32846247 DOI: 10.1016/j.scitotenv.2020.141334] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 07/20/2020] [Accepted: 07/27/2020] [Indexed: 06/11/2023]
Abstract
Cooking is a major source of indoor particulate matter (PM), especially ultrafine particles (UFPs). Long-term exposure to fine and ultrafine particles (UFPs) has been associated with adverse human health effects. Toxicological studies have demonstrated that exposure to PM2.5 (particles with aerodynamic diameter smaller than 2.5 μm) may result in increased blood pressure (BP). Some clinical studies have shown that acute exposure to PM2.5 causes changes in systolic (SBP) and diastolic blood pressure (DBP), depending on the source of particles. Studies assessing the effect of exposure to cooking PM on BP and heart rate (HR) using electric or gas stoves are not well represented in the literature. The aim of this investigation was to perform controlled studies to quantify the exposure of 50 healthy volunteer participants to fine and ultrafine particles emitted from a low-emissions recipe for frying ground beef on an electric stove. The BP and heart rate (HR) of the volunteers were monitored during exposure and after the exposure (2 h post-exposure). Maximum UFP and PM2.5 concentrations were 6.5 × 104 particles/cm3 and 0.017 mg/m3, respectively. Exposure to UFPs from frying was associated with statistically significant increases in the SBP. The lack of food and drink during the 2 h post-cooking period was also associated with a statistically significant reduction in SBP. No statistically significant changes in DBP were observed. Physiological factors, including heat stress over the stove, movements and anxiety, could be responsible for an elevation in HR at the early stages of the experiments with a subsequent drop in HR after 90 min post-cooking, when study participants were relaxed in a living room.
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Affiliation(s)
- Raikhangul Gabdrashova
- Department of Biology, School of Humanities and Social Sciences, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
| | - Sholpan Nurzhan
- Department of Biology, School of Humanities and Social Sciences, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
| | - Motahareh Naseri
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
| | - Zhibek Bekezhankyzy
- Department of Chemistry, School of Humanities and Social Sciences, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
| | - Aidana Gimnkhan
- Department of Chemistry, School of Humanities and Social Sciences, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
| | - Milad Malekipirbazari
- Department of Industrial Engineering, Bilkent University, Bilkent, 06800 Ankara, Turkey
| | - Mahsa Tabesh
- Department of Physics, Babol Noshirvani University of Technology, Shariati Ave., Babol 47148-71167, Iran
| | - Reza Khanbabaie
- Department of Physics, Babol Noshirvani University of Technology, Shariati Ave., Babol 47148-71167, Iran
| | - Byron Crape
- Department of Medicine, School of Medicine, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
| | - Giorgio Buonanno
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, via Di Biasio 43, Cassino 03043, Italy
| | - Philip K Hopke
- Department of Public Health Sciences, University of Rochester Medical Center, Rochester, NY 14642, USA
| | | | - Mehdi Amouei Torkmahalleh
- Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan 010000, Kazakhstan.
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Naseri M, Jouzizadeh M, Tabesh M, Malekipirbazari M, Gabdrashova R, Nurzhan S, Farrokhi H, Khanbabaie R, Mehri-Dehnavi H, Bekezhankyzy Z, Gimnkhan A, Dareini M, Kurmangaliyeva A, Islam N, Crape B, Buonanno G, Cassee F, Amouei Torkmahalleh M. The impact of frying aerosol on human brain activity. Neurotoxicology 2019; 74:149-161. [DOI: 10.1016/j.neuro.2019.06.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 06/14/2019] [Accepted: 06/24/2019] [Indexed: 12/13/2022]
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