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Golovynskyi S, Golovynska I, Roganova O, Golovynskyi A, Qu J, Ohulchanskyy TY. Hyperspectral imaging of lipids in biological tissues using near-infrared and shortwave infrared transmission mode: A pilot study. J Biophotonics 2023:e202300018. [PMID: 37021842 DOI: 10.1002/jbio.202300018] [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: 01/19/2023] [Revised: 03/21/2023] [Accepted: 04/04/2023] [Indexed: 06/19/2023]
Abstract
Label-free hyperspectral imaging (HSI) of lipids was demonstrated in the near-infrared (NIR) and shortwave infrared (SWIR) regions (950-1800 nm) using porcine tissue. HSI was performed in the transmission light-pass configuration, using a NIR-SWIR camera coupled with a liquid crystal tunable filter. The transmittance spectra of the regions of interest (ROIs), which correspond to the lipid and muscle areas in the specimen, were utilized for the spectrum unmixing. The transmittance spectra in ROIs were compared with those recorded by a spectrophotometer using samples of adipose and muscle. The lipid optical absorption bands at 1210 and 1730 nm were first used for the unmixing and mapping. Then, we performed the continuous multiband unmixing over the entire available spectral range, thereby, considering a combination of characteristic absorption bands of lipids, proteins, and water. The enhanced protocol demonstrates the ability to visualize small adipose inclusions of 1-10 μm size.
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Affiliation(s)
- Sergii Golovynskyi
- Shenzhen Key Laboratory of Photonics and Biophotonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, People's Republic of China
| | - Iuliia Golovynska
- Shenzhen Key Laboratory of Photonics and Biophotonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, People's Republic of China
| | - Olena Roganova
- V.M. Glushkov Institute of Cybernetics, National Academy of Sciences, Kyiv, Ukraine
| | - Andrii Golovynskyi
- V.M. Glushkov Institute of Cybernetics, National Academy of Sciences, Kyiv, Ukraine
| | - Junle Qu
- Shenzhen Key Laboratory of Photonics and Biophotonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, People's Republic of China
| | - Tymish Y Ohulchanskyy
- Shenzhen Key Laboratory of Photonics and Biophotonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, People's Republic of China
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Golovynska I, Golovynskyi S, Qu J. Comparing the Impact of NIR, Visible and UV Light on ROS Upregulation via Photoacceptors of Mitochondrial Complexes in Normal, Immune and Cancer Cells. Photochem Photobiol 2023; 99:106-119. [PMID: 35689798 DOI: 10.1111/php.13661] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Accepted: 06/06/2022] [Indexed: 01/25/2023]
Abstract
The effect of UV/visible/NIR light (380/450/530/650/808/1064 nm) on ROS generation, mitochondrial activity and viability is experimentally compared in human neuroblastoma cancer cells. The absorption of photons by mitochondrial photoacceptors in Complexes I, III and IV is in detail investigated by sequential blocking with selective pharmaceutical blockers. Complex I absorbs UV/blue light by heme P450, resulting in a very high rate (14 times) of ROS generation leading to cell death. Complex III absorbs green light, by cytochromes b, c1 and c, and possesses less ability for ROS production (seven times), so that only irradiation lower than 10 mW cm-2 causes an increase in cell viability. Complex IV is well-known as the primary photoacceptor for red/NIR light. Light of 650/808 nm at 10-100 mW cm-2 generates a physiological ROS level about 20% of a basal concentration, which enhance mitochondrial activity and cell survival, while 1064 nm light does not show any distinguished effects. Further, ROS generation induced by low-intensity red/NIR light is compared in neurons, immune and cancer cells. Red light seems to more rapidly stimulate ROS production, mitochondrial activity and cell survival than 808 nm. At the same time, different cell lines demonstrate slightly various rates of ROS generation, peculiar to their cellular physiology.
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Affiliation(s)
- Iuliia Golovynska
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Sergii Golovynskyi
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Junle Qu
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
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Stepanov YV, Golovynska I, Zhang R, Golovynskyi S, Stepanova LI, Gorbach O, Dovbynchuk T, Garmanchuk LV, Ohulchanskyy TY, Qu J. Near-infrared light reduces β-amyloid-stimulated microglial toxicity and enhances survival of neurons: mechanisms of light therapy for Alzheimer's disease. Alzheimers Res Ther 2022; 14:84. [PMID: 35717405 PMCID: PMC9206341 DOI: 10.1186/s13195-022-01022-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [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: 02/20/2022] [Accepted: 05/11/2022] [Indexed: 05/31/2023]
Abstract
BACKGROUND Low-intensity light can decelerate neurodegenerative disease progression and reduce amyloid β (Aβ) levels in the cortex, though the cellular and molecular mechanisms by which photobiomodulation (PBM) protects against neurodegeneration are still in the early stages. Microglia cells play a key role in the pathology of Alzheimer's disease by causing chronic inflammation. We present new results concerning the PBM of both oxidative stress and microglia metabolism associated with the activation of metabolic processes by 808 nm near-infrared light. METHODS The studies were carried out using healthy male mice to obtain the microglial cell suspension from the hippocampus. Oligomeric β-amyloid (1-42) was prepared and used to treat microglia cells. Light irradiation of cells was performed using diode lasers emitting at 808 nm (30 mW/cm2 for 5 min, resulting in a dose of 10 J/cm2). Mitochondrial membrane potential, ROS level studies, cell viability, apoptosis, and necrosis assays were performed using epifluorescence microscopy. Phagocytosis, nitric oxide and H2O2 production, arginase, and glucose 6-phosphate dehydrogenase activities were measured using standard assays. Cytokines, glucose, lactate, and ATP were measurements with ELISA. As our data were normally distributed, two-way ANOVA test was used. RESULTS The light induces a metabolic shift from glycolysis to mitochondrial activity in pro-inflammatory microglia affected by oligomeric Aβ. Thereby, the level of anti-inflammatory microglia increases. This process is accompanied by a decrease in pro-inflammatory cytokines and an activation of phagocytosis. Light exposure decreases the Aβ-induced activity of glucose-6-phosphate dehydrogenase, an enzyme that regulates the rate of the pentose phosphate pathway, which activates nicotinamide adenine dinucleotide phosphate oxidases to further produce ROS. During co-cultivation of neurons with microglia, light prevents the death of neurons, which is caused by ROS produced by Aβ-altered microglia. CONCLUSIONS These original data clarify reasons for how PBM protects against neurodegeneration and support the use of light for therapeutic research in the treatment of Alzheimer's disease.
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Affiliation(s)
- Yurii V Stepanov
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, People's Republic of China
| | - Iuliia Golovynska
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, People's Republic of China
| | - Renlong Zhang
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, People's Republic of China
| | - Sergii Golovynskyi
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, People's Republic of China
| | - Liudmyla I Stepanova
- Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, Kyiv, 01601, Ukraine
| | - Oleksandr Gorbach
- Laboratory of Experimental Oncology, National Cancer Institute of Ukraine, Kyiv, 03022, Ukraine
| | - Taisa Dovbynchuk
- Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, Kyiv, 01601, Ukraine
| | - Liudmyla V Garmanchuk
- Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, Kyiv, 01601, Ukraine
| | - Tymish Y Ohulchanskyy
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, People's Republic of China
| | - Junle Qu
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, People's Republic of China.
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Stepanov YV, Golovynska I, Golovynskyi S, Garmanchuk LV, Gorbach O, Stepanova LI, Khranovska N, Ostapchenko LI, Ohulchanskyy TY, Qu J. Red and near infrared light-stimulated angiogenesis mediated via Ca 2+ influx, VEGF production and NO synthesis in endothelial cells in macrophage or malignant environments. J Photochem Photobiol B 2022; 227:112388. [PMID: 35074677 DOI: 10.1016/j.jphotobiol.2022.112388] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 01/02/2022] [Accepted: 01/08/2022] [Indexed: 12/19/2022]
Abstract
Irradiation with red or near-infrared (NIR) light in low level light therapy (LLLT) is found to stimulate cellular processes and bioenergetics, resulting in enhanced wound healing, pain control, neurodegenerative diseases treatment, etc. During light irradiation of tissues and organs, different cells are affected, though the connection between photostimulation of cells and their environmental conditions remains poorly understood. In this report, red/NIR light-stimulated angiogenesis is investigated using endothelial cells in vitro, with a focus on the capillary-like structure (CLS) formation and the respective biochemical processes in cells under conditions proximate to a healthy or malignant environment, which strongly defines angiogenesis. To model environmental conditions for endotheliocytes in vitro, the cell culture environment was supplemented by an augmented conditioned medium from macrophages or cancer cells. The biochemical processes in endothelial cell cultures were investigated with and without irradiation by red (650 nm) and near-infrared (808 nm) laser diodes and under normoxia or hypoxia conditions. A light-stimulated angiogenesis has been found, with a more efficient stimulation by 650 nm light compared to 808 nm light. It was shown that the irradiation with light promoted extracellular Ca2+ influx, fostered cell cycle progression, proliferation and NO generation in endothelial cells, and caused an increase in vascular endothelial growth factor (VEGF) production by endothelial cells and M2 macrophages under hypoxia conditions. The activation of VEGF production by macrophages was found to be associated with an increase in the number of M2 macrophages after light irradiation under hypoxia conditions. Thus, a new pathway of an activation of the endothelial cell metabolism, which is related with the extracellular Ca2+ influx after light irradiation, has been revealed. STATEMENT OF SIGNIFICANCE: Red/NIR light-stimulated angiogenesis has been studied using endothelial cells in vitro, with focus on CLS formation and the respective biochemical processes in cell models proximate to a healthy or malignant environment. A light-stimulated angiogenesis has been found, stimulated via extracellular Ca2+ influx, cell cycle progression, proliferation and NO generation, VEGF production increase by endothelial cells under hypoxia conditions.
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Affiliation(s)
- Yurii V Stepanov
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Iuliia Golovynska
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Sergii Golovynskyi
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Liudmyla V Garmanchuk
- Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, Kyiv 01601, Ukraine
| | - Oleksandr Gorbach
- Laboratory of Experimental Oncology, National Cancer Institute of Ukraine, Kyiv 03022, Ukraine
| | - Liudmyla I Stepanova
- Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, Kyiv 01601, Ukraine
| | - Natalia Khranovska
- Laboratory of Experimental Oncology, National Cancer Institute of Ukraine, Kyiv 03022, Ukraine
| | - Liudmyla I Ostapchenko
- Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, Kyiv 01601, Ukraine
| | - Tymish Y Ohulchanskyy
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, PR China.
| | - Junle Qu
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, PR China.
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5
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Stepanov YV, Golovynska I, Dziubenko NV, Kuznietsova HM, Petriv N, Skrypkina I, Golovynskyi S, Stepanova LI, Stohnii Y, Garmanchuk LV, Ostapchenko LI, Yevsa T, Qu J, Ohulchanskyy TY. NMDA receptor expression during cell transformation process at early stages of liver cancer in rodent models. Am J Physiol Gastrointest Liver Physiol 2022; 322:G142-G153. [PMID: 34851733 DOI: 10.1152/ajpgi.00060.2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Hepatocellular carcinoma (HCC) is the most common primary liver cancer, which is not sensitive to radiotherapy and chemotherapy and very often experiences postoperative relapse. In this regard, effective screening of liver cancer is considered as the most important and urgent task. The aim of our study was to determine whether N-methyl-D-aspartate receptor (NMDAR) and, in particular, its subunits, can serve as biomarkers to distinguish the precancerous liver at early stages of liver fibrosis. We assessed the development of HCC after 10, 15, and 22 wk using a HCC rat model. The expression of NMDAR subunits was monitored at different stages of HCC by means of immunohistochemistry combined with epifluorescence microscopy imaging, Western blotting, and direct bisulfite sequencing. NMDAR subunits were not found in healthy liver tissues. In contrast, NMDAR subunits, in particular NR1 and NR2B, appeared at the stage of severe liver fibrosis (precancerous liver disease) in rats and were expressed during the development of HCC in rats and mice. Using the direct bisulfite sequencing, we detected that increased expression of NMDAR directly correlated with the demethylation of CpG islands in the promoter region of genes encoding receptor subunits. The obtained results confirmed that NMDAR subunits can serve as new biomarkers of precancerous liver disease, severe fibrosis, and its progression towards HCC.NEW & NOTEWORTHY We have shown NMDAR expression in cell transformation process at early stages of cancer, specifically HCC. The aim of our study was to define the disease stages from precancerous liver disease towards liver cancer progression when NMDAR subunits were expressed/detected. A fibrosis/HCC rat model, immunohistochemistry combined with epifluorescence microscopy imaging, Western blotting was used. The dynamics of appearance of NMDAR subunits, their expression and methylation status during the development of HCC were shown and discussed.
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Affiliation(s)
- Yurii V Stepanov
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, People's Republic of China
| | - Iuliia Golovynska
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, People's Republic of China
| | - Nataliia V Dziubenko
- Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
| | - Halyna M Kuznietsova
- Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
| | - Nataliia Petriv
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Inessa Skrypkina
- Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Sergii Golovynskyi
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, People's Republic of China
| | - Liudmyla I Stepanova
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Yevhenii Stohnii
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Liudmyla V Garmanchuk
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Liudmyla I Ostapchenko
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Tetyana Yevsa
- Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany
| | - Junle Qu
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, People's Republic of China
| | - Tymish Y Ohulchanskyy
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, People's Republic of China
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6
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Babichuk IS, Romaniuk YA, Golovynskyi S, Hurtavy VG, Mudryi AV, Zhivulko VD, Babichuk IV, Xu C, Lin C, Cao M, Hreshchuk OM, Yukhymchuk VO, Valakh MY, Li B, Yang J. Spectroscopy and Theoretical Modeling of Phonon Vibration Modes and Band Gap Energy of Cu 2ZnSn(S x Se 1-x ) 4 Bulk Crystals and Thin Films. ACS Omega 2021; 6:29137-29148. [PMID: 34746602 PMCID: PMC8567408 DOI: 10.1021/acsomega.1c04356] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 10/08/2021] [Indexed: 06/12/2023]
Abstract
Semiconductor Cu2ZnSn(S x Se1-x )4 (CZTSSe) solid solution is considered as a perspective absorber material for solar cells. However, during its synthesis or deposition, any modification in the resulting optical properties is hardly predicted. In this study, experimental and theoretical analyses of CZTSSe bulk crystals and thin films are presented based on Raman scattering and absorption spectroscopies together with compositional and morphological characterizations. CZTSSe bulk and thin films are studied upon a change in the x = S/(S + Se) aspect ratio. The morphological study is focused on surface visualization of the solid solutions, depending on x variation. It has been discovered for the first time that the surface of the bulk CZTSSe crystal with x = 0.35 has pyramid-like structures. The information obtained from the elemental analysis helps to consider the formation of a set of possible intrinsic lattice defects, including vacancies, self-interstitials, antisites, and defect complexes. Due to these results and the experimentally obtained values of the band gap within 1.0-1.37 eV, a deviation from the calculated band gap values is estimated in the range of 1.0-1.5 eV. It is suggested which defects can have an influence on such a band gap change. Also, on comparing the experimental Raman spectra of CZTSSe with the theoretical modeling results, an excellent agreement is obtained for the main Raman bands. The proposed theoretical approach allows to estimate the values of concentration of atoms (S or Se) for CZTSSe solid solution directly from the experimental Raman spectra. Thus, the visualization of morphology and the proposed theoretical approach at various x values will help for a deeper understanding of the CZTSSe structure to develop next-generation solar cells.
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Affiliation(s)
- Ivan S. Babichuk
- Faculty
of Intelligent Manufacturing, Wuyi University, Jiangmen 529020, P.R. China
- V.
Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, Kyiv 03680, Ukraine
| | - Yurii A. Romaniuk
- V.
Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, Kyiv 03680, Ukraine
- Key
Laboratory of Optoelectronic Devices and Systems of Ministry of Education
and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, P.R. China
| | - Sergii Golovynskyi
- Key
Laboratory of Optoelectronic Devices and Systems of Ministry of Education
and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, P.R. China
| | - Vitali G. Hurtavy
- State
Research and Production Association “Research and Practice
Center for Material Science of the National Academy of Sciences of
Belarus”, Minsk 220072, Belarus
| | - Alexander V. Mudryi
- State
Research and Production Association “Research and Practice
Center for Material Science of the National Academy of Sciences of
Belarus”, Minsk 220072, Belarus
| | - Vadim D. Zhivulko
- State
Research and Production Association “Research and Practice
Center for Material Science of the National Academy of Sciences of
Belarus”, Minsk 220072, Belarus
| | - Iryna V. Babichuk
- National
Center “Minor Academy of Sciences of Ukraine”, Kyiv 04119, Ukraine
| | - Chengqun Xu
- School of
Applied Physics and Materials, Wuyi University, Jiangmen 529020, P.R. China
| | - Chubin Lin
- Faculty
of Intelligent Manufacturing, Wuyi University, Jiangmen 529020, P.R. China
| | - Mingxuan Cao
- Faculty
of Intelligent Manufacturing, Wuyi University, Jiangmen 529020, P.R. China
| | | | | | - Mykhailo Ya. Valakh
- V.
Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, Kyiv 03680, Ukraine
| | - Baikui Li
- Key
Laboratory of Optoelectronic Devices and Systems of Ministry of Education
and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, P.R. China
| | - Jian Yang
- Faculty
of Intelligent Manufacturing, Wuyi University, Jiangmen 529020, P.R. China
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7
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Golovynska I, Stepanov YV, Golovynskyi S, Zhou T, Stepanova LI, Garmanchuk LV, Ohulchanskyy TY, Qu J. Macrophages Modulated by Red/NIR Light: Phagocytosis, Cytokines, Mitochondrial Activity, Ca 2+ Influx, Membrane Depolarization and Viability. Photochem Photobiol 2021; 98:484-497. [PMID: 34569637 DOI: 10.1111/php.13526] [Citation(s) in RCA: 3] [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] [Received: 07/28/2021] [Accepted: 09/20/2021] [Indexed: 12/19/2022]
Abstract
Low-level light therapy (LLLT) is emerging as a promising therapeutic approach to modulate the biochemical and molecular processes within living cells. LLLT is known to produce local and systemic effects; therefore, immune cells in local tissues or in the circulation are affected by light. However, this specific effect remains weakly explored. In this study, the effect of red (650 nm) and NIR (808 nm) light on phagocytosis (respiratory burst), cytokine expression, mitochondrial activity, ROS generation, Ca2+ influx and membrane depolarization in macrophages in vitro is investigated. Both the phagocytic capacity and adhesion of macrophages strongly (˜2.5 times) increased in the first hours after exposure to light in a dose-dependent manner. The light-evoked upregulation of phagocytosis is found to be less efficient than the maximal pharmacologically induced enhancement of ˜3.2 times. Also, red/NIR light reduces the production of pro-inflammatory cytokines and activates the secretion of anti-inflammatory cytokines by several times in activated macrophages. At the same time, the viability shows a biphasic dose response: it increases after irradiation with lower doses (0.3-1 J cm-2 ) and decreases after treatment with higher doses (18-30 J cm-2 ), which is apparently associated with the upregulation of ROS generation, followed by an increase in the mitochondrial activity.
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Affiliation(s)
- Iuliia Golovynska
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Yurii V Stepanov
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Sergii Golovynskyi
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Ting Zhou
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Liudmyla I Stepanova
- Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
| | - Liudmyla V Garmanchuk
- Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
| | - Tymish Y Ohulchanskyy
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Junle Qu
- Center for Biomedical Optics and Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
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Peng D, Wang C, Ma R, Mao S, Qu S, Ren Z, Golovynskyi S, Pan C. Mechanoluminescent materials for athletic analytics in sports science. Sci Bull (Beijing) 2021; 66:206-209. [PMID: 36654323 DOI: 10.1016/j.scib.2020.09.029] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Dengfeng Peng
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Chunfeng Wang
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Ronghua Ma
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Shaohui Mao
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Sicen Qu
- Department of Physical Education, Shenzhen University, Shenzhen 518060, China
| | - Zhanbing Ren
- Department of Physical Education, Shenzhen University, Shenzhen 518060, China
| | - Sergii Golovynskyi
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Caofeng Pan
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China; School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
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9
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Golovynska I, Golovynskyi S, Stepanov YV, Stepanova LI, Qu J, Ohulchanskyy TY. Red and near-infrared light evokes Ca 2+ influx, endoplasmic reticulum release and membrane depolarization in neurons and cancer cells. J Photochem Photobiol B 2020; 214:112088. [PMID: 33278762 DOI: 10.1016/j.jphotobiol.2020.112088] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 10/26/2020] [Accepted: 11/18/2020] [Indexed: 12/12/2022]
Abstract
Low level light therapy uses light of specific wavelengths in red and near-infrared spectral range to treat various pathological conditions. This light is able to modulate biochemical cascade reactions in cells that can have important health implications. In this study, the effect of low intensity light at 650, 808 and 1064 nm on neurons and two types of cancer cells (neuroblastoma and HeLa) is reported, with focus on the photoinduced change of intracellular level of Ca2+ ions and corresponding signaling pathways. The obtained results show that 650 and 808 nm light promotes intracellular Ca2+ elevation regardless of cell type, but with different dynamics due to the specificities of Ca2+ regulation in neurons and cancer cells. Two origins responsible for Ca2+ elevation are determined to be: influx of exogenous Ca2+ ions into cells and Ca2+ release from endoplasmic reticulum. Our investigation of the related cellular processes shows that light-induced membrane depolarization is distinctly involved in the mechanism of Ca2+ influx. Ca2+ release from endoplasmic reticulum activated by reactive oxygen species generation is considered as a possible light-dependent signaling pathway. In contrast to the irradiation with 650 and 808 nm light, no effects are observed under 1064 nm irradiation. We believe that the obtained insights are of high significance and can be useful for the development of drug-free phototherapy.
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Affiliation(s)
- Iuliia Golovynska
- Center for Biomedical Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Sergii Golovynskyi
- Center for Biomedical Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Yurii V Stepanov
- Center for Biomedical Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Liudmyla I Stepanova
- Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, Kyiv 01601, Ukraine
| | - Junle Qu
- Center for Biomedical Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, PR China.
| | - Tymish Y Ohulchanskyy
- Center for Biomedical Photonics, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, PR China.
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10
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Yeshchenko OA, Golovynskyi S, Kudrya VY, Tomchuk AV, Dmitruk IM, Berezovska NI, Teselko PO, Zhou T, Xue B, Golovynska I, Lin D, Qu J. Laser-Induced Periodic Ag Surface Structure with Au Nanorods Plasmonic Nanocavity Metasurface for Strong Enhancement of Adenosine Nucleotide Label-Free Photoluminescence Imaging. ACS Omega 2020; 5:14030-14039. [PMID: 32566869 PMCID: PMC7301579 DOI: 10.1021/acsomega.0c01433] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 05/13/2020] [Indexed: 06/11/2023]
Abstract
The label-free detection of biomolecules by means of fluorescence spectroscopy and imaging is topical. The developed surface-enhanced fluorescence technique has been applied to achieve progress in the label-free detection of biomolecules including deoxyribonucleic acid (DNA) bases. In this study, the effect of a strong enhancement of photoluminescence of 5'-deoxyadenosine-monophosphate (dAMP) by the plasmonic nanocavity metasurface composed of the silver femtosecond laser-induced periodic surface structure (LIPSS) and gold nanorods or nanospheres has been realized at room temperature. The highest value of 1220 for dAMP on the Ag-LIPSS/Au nanorod metasurface has been explained to be a result of the synergetic effect of the generation of hot spots near the sharp edges of LIPSS and Au nanorod tips together with the excitation of collective gap mode of the cavity due to strong near-field plasmonic coupling. A stronger plasmonic enhancement of the phosphorescence compared to the fluorescence is achieved due to a greater overlap of the phosphorescence spectrum with the surface plasmon spectral region. The photoluminescence imaging of dAMP on the metasurfaces shows a high intensity in the blue range. The comparison of Ag-LIPSS/Au nanorod and Ag-LIPSS/Au-nanosphere metasurfaces shows a considerably higher enhancement for the metasurface containing Au nanorods. Thus, the hybrid cavity metasurfaces containing metal LIPSS and nonspherical metal nanoparticles with sharp edges are promising for high-sensitive label-free detection and imaging of biomolecules at room temperature.
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Affiliation(s)
- Oleg A. Yeshchenko
- Center
for Biomedical Photonics, Shenzhen University, Shenzhen 518060, China
- Physics
Department, Taras Shevchenko National University
of Kyiv, Kyiv 01601, Ukraine
| | - Sergii Golovynskyi
- Center
for Biomedical Photonics, Shenzhen University, Shenzhen 518060, China
| | - Vladislav Yu Kudrya
- Physics
Department, Taras Shevchenko National University
of Kyiv, Kyiv 01601, Ukraine
| | - Anastasiya V. Tomchuk
- Physics
Department, Taras Shevchenko National University
of Kyiv, Kyiv 01601, Ukraine
| | - Igor M. Dmitruk
- Physics
Department, Taras Shevchenko National University
of Kyiv, Kyiv 01601, Ukraine
- Department
of Photon Processes, Institute of Physics,
NAS of Ukraine, Kyiv 03028, Ukraine
| | | | - Petro O. Teselko
- Physics
Department, Taras Shevchenko National University
of Kyiv, Kyiv 01601, Ukraine
| | - Ting Zhou
- Center
for Biomedical Photonics, Shenzhen University, Shenzhen 518060, China
| | - Bin Xue
- Center
for Biomedical Photonics, Shenzhen University, Shenzhen 518060, China
| | - Iuliia Golovynska
- Center
for Biomedical Photonics, Shenzhen University, Shenzhen 518060, China
| | - Danying Lin
- Center
for Biomedical Photonics, Shenzhen University, Shenzhen 518060, China
| | - Junle Qu
- Center
for Biomedical Photonics, Shenzhen University, Shenzhen 518060, China
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11
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Peng D, Jiang Y, Huang B, Du Y, Zhao J, Zhang X, Ma R, Golovynskyi S, Chen B, Wang F. A ZnS/CaZnOS Heterojunction for Efficient Mechanical-to-Optical Energy Conversion by Conduction Band Offset. Adv Mater 2020; 32:e1907747. [PMID: 32128925 DOI: 10.1002/adma.201907747] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 01/18/2020] [Accepted: 02/18/2020] [Indexed: 06/10/2023]
Abstract
Actively collecting the mechanical energy by efficient conversion to other forms of energy such as light opens a new possibility of energy-saving, which is of pivotal significance for supplying potential solutions for the present energy crisis. Such energy conversion has shown promising applications in modern sensors, actuators, and energy harvesting. However, the implementation of such technologies is being hindered because most luminescent materials show weak and non-recoverable emissions under mechanical excitation. Herein, a new class of heterojunctioned ZnS/CaZnOS piezophotonic systems is presented, which displays highly reproducible mechanoluminescence (ML) with an unprecedented intensity of over two times higher than that of the widely used commercial ZnS (the state-of-the-art ML material). Density functional theory calculations reveal that the high-performance ML originates from efficient charge transfer and recombination through offset of the valence and conduction bands in the heterojunction interface region. By controlling the ZnS-to-CaZnOS ratio in conjunction with manganese (Mn2+ ) and lanthanide (Ln3+ ) doping, tunable ML across the full spectrum is activated by a small mechanical stimulus of 1 N (10 kPa). The findings demonstrate a novel strategy for constructing efficient ML materials by leveraging interface effects and ultimately promoting practical applications for ML.
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Affiliation(s)
- Dengfeng Peng
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Yue Jiang
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Bolong Huang
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, 999077, China
| | - Yangyang Du
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong, Hong Kong SAR, 999077, China
| | - Jianxiong Zhao
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong, Hong Kong SAR, 999077, China
| | - Xin Zhang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong, Hong Kong SAR, 999077, China
| | - Ronghua Ma
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Sergii Golovynskyi
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Bing Chen
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong, Hong Kong SAR, 999077, China
| | - Feng Wang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong, Hong Kong SAR, 999077, China
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12
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Stetsenko M, Pullano SA, Margitych T, Maksimenko L, Hassan A, Kryvyi S, Hu R, Huang C, Ziniuk R, Golovynskyi S, Babichuk I, Li Β, Qu J, Fiorillo AS. Antireflection Enhancement by Composite Nanoporous Zeolite 3A-Carbon Thin Film. Nanomaterials (Basel) 2019; 9:E1641. [PMID: 31752315 PMCID: PMC6915533 DOI: 10.3390/nano9111641] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 11/13/2019] [Accepted: 11/15/2019] [Indexed: 12/05/2022]
Abstract
A straightforward and effective spin-coating technique at 120 °C was investigated for the deposition of a thin nanoporous layer with antireflection properties onto glass and indium tin oxide (ITO) coated glass. A mixture of zeolite 3A powder and high iodine value vegetable oil was deposited, creating a carbonic paste with embedded nanoporous grains. Experimental results evidenced excellent broadband antireflection over the visible-near-infrared wavelength range (450-850 nm), with a diffuse reflectance value of 1.67% and 1.79%. Structural and optical characteristics stabilized over time. The results are promising for the accessible and cost-effective fabrication of an antireflective surface for optoelectronic devices.
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Affiliation(s)
- Maksym Stetsenko
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (M.S.); (A.H.)
- V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, 03680 Kyiv, Ukraine; (L.M.); (S.K.); (I.B.)
| | - Salvatore A. Pullano
- Department of Health Sciences, Magna Græcia University of Catanzaro, 88100 Catanzaro, Italy; (S.A.P.); (A.S.F.)
| | - Tetiana Margitych
- Kiev Institute for Nuclear Research, National Academy of Sciences of Ukraine, 03680 Kyiv, Ukraine;
| | - Lidia Maksimenko
- V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, 03680 Kyiv, Ukraine; (L.M.); (S.K.); (I.B.)
| | - Ali Hassan
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (M.S.); (A.H.)
| | - Serhii Kryvyi
- V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, 03680 Kyiv, Ukraine; (L.M.); (S.K.); (I.B.)
- Institute of Physics, Polish Academy of Sciences, 02-668 Warsaw, Poland
| | - Rui Hu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (M.S.); (A.H.)
| | - Chun Huang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (M.S.); (A.H.)
| | - Roman Ziniuk
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (M.S.); (A.H.)
| | - Sergii Golovynskyi
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (M.S.); (A.H.)
- V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, 03680 Kyiv, Ukraine; (L.M.); (S.K.); (I.B.)
| | - Ivan Babichuk
- V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, 03680 Kyiv, Ukraine; (L.M.); (S.K.); (I.B.)
- Intelligent Manufacturing Division, Wuyi University, Jiangmen 529020, China
| | - Βaikui Li
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (M.S.); (A.H.)
| | - Junle Qu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (M.S.); (A.H.)
| | - Antonino S. Fiorillo
- Department of Health Sciences, Magna Græcia University of Catanzaro, 88100 Catanzaro, Italy; (S.A.P.); (A.S.F.)
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13
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Golovynska I, Golovynskyi S, Stepanov YV, Garmanchuk LV, Stepanova LI, Qu J, Ohulchanskyy TY. Red and near-infrared light induces intracellular Ca 2+ flux via the activation of glutamate N-methyl-D-aspartate receptors. J Cell Physiol 2019; 234:15989-16002. [PMID: 30741423 DOI: 10.1002/jcp.28257] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [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: 10/17/2018] [Revised: 01/06/2019] [Accepted: 01/22/2019] [Indexed: 01/24/2023]
Abstract
Red and near-infrared (NIR) light effect on Ca2+ ions flux through the influence on N-methyl-D-aspartate receptors (NMDARs) and their functioning in HeLa cells was studied in vitro. Cells were irradiated by 650 and 808 nm laser light at different power densities and doses and the obtained effect was compared with that caused by the pharmacological agents. The laser light was found to elevate Ca2+ influx into cell cytoplasm in a dose-dependent manner without changes of the NMDAR functioning. Furthermore, the light of both wavelengths demonstrated the ability to elevate Ca2+ influx under the pharmacological blockade of NMDARs and also might partially abolish the blockade enhancing Ca2+ influx after selective stimulation of the receptors with NMDA. Simultaneously, the light at moderate doses demonstrated a photobiostimulating effect on cells. Based on our experiments and data reported in the literature, we suggest that the low-power visible and NIR light can instigate a cell membrane depolarization via nonthermal activation, resulting in the fast induction of Ca2+ influx into cells. The obtained results also demonstrate that NIR light can be used for nonthermal and nonpharmacological stimulation of NMDARs in cancer cells.
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Affiliation(s)
- Iuliia Golovynska
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, P.R. China
| | - Sergii Golovynskyi
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, P.R. China
| | - Yurii V Stepanov
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, P.R. China
| | - Liudmyla V Garmanchuk
- Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
| | - Ludmila I Stepanova
- Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
| | - Junle Qu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, P.R. China
| | - Tymish Y Ohulchanskyy
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, P.R. China
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14
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Zborovskii YL, Orysyk VV, Golovynska I, Dzhus OI, Garmanchuk LV, Stepanov YV, Khranovska N, Nehelia AO, Golovynskyi S, Ohulchanskyy TY, Qu J, Orysyk SI, Pekhnyo VI, Vovk MV. Novel Hybrid Compound 4-[(E)-2-phenylethenesulfonamido]-N-hydroxybutanamide with Antimetastatic and Cytotoxic Action: Synthesis and Anticancer Screening. Anticancer Agents Med Chem 2019. [PMID: 29532761 DOI: 10.2174/1871520618666180313151503] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 11/22/2022]
Abstract
BACKGROUND One of the most promising strategies to develop multi-targeted anticancer therapeutics is to introduce to the structure of a potential drug two or more pharmacophores (functional groups or structural fragments), which have antiproliferative, proapoptotic or antimetastatic properties acting via different mechanisms. OBJECTIVE To design, synthesize and perform screening of a novel hybrid anticancer compound. METHOD A novel hybrid compound 4-[(E)-2-phenylethenesulfonamido]-N-hydroxybutanamide, combining butanehydroxamate and styrenesulfonamide moieties, was designed, synthesized and investigated as a potent antimetastatic and antiproliferative agent. The structure and purity of the synthesized compound were confirmed by 1H NMR, 13C NMR, LC/MS spectroscopy and elemental analysis. The compound was screened for the anticancer activity in vitro against HeLa and in vivo against Lewis lung carcinoma tumor, using an antitumor metalloenzyme inhibitor GM6001 (Ilomastat, Galardin) and Pifithrin-μ as control anticancer agents. RESULTS It was found that the application of our compound resulted in a high fraction of apoptotic cells in the cell population, along with disruption in the cell cycle profile manifested as arrest of proliferative phases. Furthermore, changes of the morphological properties (i.e., an enhancement of adhesive properties and reduction of the nuclear-to-cytoplasm ratio) were found. The in vivo screening revealed that the compound significantly inhibited the metastasizing process that was manifested by a reduction in the number and volume of metastases. CONCLUSIONS The obtained results demonstrate that our compound can serve as a base for further structure optimization in order to design new highly-effective antimetastatic and antitumor agents.
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Affiliation(s)
- Yurii L Zborovskii
- Institute of Organic Chemistry, NAS of Ukraine, 5 Murmanska St., 02660, Kyiv, Ukraine
| | - Viktor V Orysyk
- Institute of Organic Chemistry, NAS of Ukraine, 5 Murmanska St., 02660, Kyiv, Ukraine
| | - Iuliia Golovynska
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, China
| | - Olena I Dzhus
- Taras Shevchenko National University of Kyiv, ESC "Institute of Biology and Medicine", 64 Volodymyrska St., 01601, Kyiv, Ukraine
| | - Liudmyla V Garmanchuk
- Taras Shevchenko National University of Kyiv, ESC "Institute of Biology and Medicine", 64 Volodymyrska St., 01601, Kyiv, Ukraine
| | - Yurii V Stepanov
- Taras Shevchenko National University of Kyiv, ESC "Institute of Biology and Medicine", 64 Volodymyrska St., 01601, Kyiv, Ukraine
| | | | - Anatolii O Nehelia
- Taras Shevchenko National University of Kyiv, ESC "Institute of Biology and Medicine", 64 Volodymyrska St., 01601, Kyiv, Ukraine
| | - Sergii Golovynskyi
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, China
| | - Tymish Y Ohulchanskyy
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, China
| | - Junle Qu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, China
| | - Svitlana I Orysyk
- V.I. Vernadskii Institute of General and Inorganic Chemistry, NAS of Ukraine, 32/34 Palladina Ave., 03680, Kyiv, Ukraine
| | - Vasyl I Pekhnyo
- V.I. Vernadskii Institute of General and Inorganic Chemistry, NAS of Ukraine, 32/34 Palladina Ave., 03680, Kyiv, Ukraine
| | - Myhaylo V Vovk
- Institute of Organic Chemistry, NAS of Ukraine, 5 Murmanska St., 02660, Kyiv, Ukraine
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15
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Golovynskyi S, Datsenko OI, Seravalli L, Trevisi G, Frigeri P, Babichuk IS, Golovynska I, Li B, Qu J. Defect influence on in-plane photocurrent of InAs/InGaAs quantum dot array: long-term electron trapping and Coulomb screening. Nanotechnology 2019; 30:305701. [PMID: 30974421 DOI: 10.1088/1361-6528/ab1866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Metamorphic InAs/In0.15Ga0.85As and InAs/In0.31Ga0.69As quantum dot (QD) arrays are known to be photosensitive in the telecommunication ranges at 1.3 and 1.55 μm, respectively; however, for photonic applications of these nanostructures, the effect of levels related to defects still needs in-depth investigation. We have focused on the influence of electron traps of defects on photocurrent (PC) in the plane of the QD array, studying by PC and deep level thermally stimulated current spectroscopy together with HRTEM and theoretical modeling. In the structures, a rich spectrum of electron trap levels of point defects EL6 (E c - 0.37 eV), EL7 (0.29-0.30 eV), EL8 (0.27 eV), EL9/M2 (0.22-0.23 eV), EL10/M1 (0.16 eV), M0 (∼0.11 eV) and three extended defects ED1/EL3 (0.52-0.54), ED2/EL4 (0.47-0.48 eV), ED3/EL5 (0.42-0.43 eV) has been identified. Among them, new defect levels undiscovered earlier in InAs/InGaAs nanostructures has been detected, in particular, EL8 and M0. The found electron traps are shown to affect a time-dependent PC at low temperatures. Besides a long-term kinetics due to trap charging, a prolonged PC decrement versus time is measured under constant illumination. The decrement is interpreted to be related to a Coulomb screening of the conductivity channel by the electrons captured in the QD interface traps. The decrement is well fitted by allometric exponents, which means many types of traps involved in electron capturing. This study provides new findings into the mechanism of in-plane PC of QD arrays, showing a crucial importance of growth-related defects on photoresponsivity at low temperatures.
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Affiliation(s)
- Sergii Golovynskyi
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China. Institute of Semiconductor Physics, National Academy of Sciences, 03680, Kyiv, Ukraine
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16
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Golovynskyi S, Golovynska I, Stepanova LI, Datsenko OI, Liu L, Qu J, Ohulchanskyy TY. Optical windows for head tissues in near-infrared and short-wave infrared regions: Approaching transcranial light applications. J Biophotonics 2018; 11:e201800141. [PMID: 30098115 DOI: 10.1002/jbio.201800141] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [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: 04/18/2018] [Accepted: 08/09/2018] [Indexed: 05/02/2023]
Abstract
Optical properties of the rat head tissues (brain cortex, cranial bone and scalp skin) are assessed, aiming at transcranial light applications such as optical imaging and phototherapy. The spectral measurements are carried out over the wide spectral range of 350 to 2800 nm, involving visible, near-infrared (NIR) and short-wave infrared (SWIR) regions. Four tissue transparency windows are considered: ~700 to 1000 nm (NIR-I), ~1000 to 1350 nm (NIR-II), ~1550 to 1870 nm (NIR-III or SWIR) and ~2100 to 2300 nm (SWIR-II). The values of attenuation coefficient and total attenuation length are determined for all windows and tissue types. The spectra indicate transmittance peaks in NIR, NIR-II and SWIR-II, with maximum tissue permeability for SWIR light. The use of SWIR-II window for the transcranial light applications is substantiated. Furthermore, absorbance of the head tissues is investigated in details, by defining and describing the characteristic absorption peaks in NIR-SWIR.
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Affiliation(s)
- Sergii Golovynskyi
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Iuliia Golovynska
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Ludmila I Stepanova
- Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine
| | | | - Liwei Liu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Junle Qu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Tymish Y Ohulchanskyy
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, China
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17
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Golovynska I, Kalmukova O, Svitina HM, Kyryk VM, Shablii VA, Senchylo NV, Ostrovska GV, Dzerzhinskyi M, Stepanov YV, Golovynskyi S, Ohulchanskyy TY, Liu L, Garmanchuk LV, Qu J. Morpho-Functional Characteristics of Bone Marrow Multipotent Mesenchymal Stromal Cells after Activation or Inhibition of Epidermal Growth Factor and Toll-Like Receptors or Treatment with DNA Intercalator Cisplatin. Cytometry A 2018; 95:24-33. [PMID: 30240134 DOI: 10.1002/cyto.a.23593] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 04/15/2018] [Revised: 07/25/2018] [Accepted: 07/30/2018] [Indexed: 12/11/2022]
Abstract
This study is aimed to reveal morphological and functional changes in multipotent mesenchymal stromal cells (MSCs) isolated from the rat bone marrow after: (i) activation of Toll-like receptors (TLRs) with teichoic acid (TA), (ii) impact on epidermal growth factor (EGF) receptors with activator EGF or inhibitor Herceptin, and (iii) treatment with DNA intercalator Cisplatin. According to our results, TA and EGF cause an increase in the synthesis of glycosaminoglycans, c-Myc content, and protein in the MSC cytoplasm. It was observed that the cell population in G0 phase decreased and the cell population in G1 phase increased, when compared with control. At the same time, the cell population with a higher nuclear-cytoplasmic ratio (NCR) in S and G2 phases also increased. This indicates the manifestation of the MSC mesenchymal phenotype, exhibiting indirect metabolic signs of the regenerative potential increase. In other experiments, Herceptin was shown to suppress only the stemness signs of MSCs, while Cisplatin seriously affected cell viability in general, reducing synthetic and proliferative activities and causing cell morphology disturbances. © 2018 International Society for Advancement of Cytometry.
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Affiliation(s)
- Iuliia Golovynska
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China
| | - Olesia Kalmukova
- ESC Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, 01601, Kyiv, Ukraine.,State Institute of Genetic and Regenerative Medicine, National Academy of Medical Sciences of Ukraine, 04114, Kyiv, Ukraine
| | - Hanna M Svitina
- Pharmacen, Centre of Excellence for Pharmaceutical Sciences, North-West University, Private Bag X6001, Potchefstroom, 2520, South Africa
| | - Vitaliy M Kyryk
- State Institute of Genetic and Regenerative Medicine, National Academy of Medical Sciences of Ukraine, 04114, Kyiv, Ukraine
| | | | - Nataliya V Senchylo
- ESC Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, 01601, Kyiv, Ukraine
| | - Galyna V Ostrovska
- ESC Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, 01601, Kyiv, Ukraine
| | - Mykola Dzerzhinskyi
- ESC Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, 01601, Kyiv, Ukraine
| | - Yurii V Stepanov
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China
| | - Sergii Golovynskyi
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China
| | - Tymish Y Ohulchanskyy
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China
| | - Liwei Liu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China
| | - Liudmila V Garmanchuk
- ESC Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, 01601, Kyiv, Ukraine
| | - Junle Qu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China
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18
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Golovynska I, Beregova TV, Falalyeyeva TM, Stepanova LI, Golovynskyi S, Qu J, Ohulchanskyy TY. Peripheral N-methyl-D-aspartate receptor localization and role in gastric acid secretion regulation: immunofluorescence and pharmacological studies. Sci Rep 2018; 8:7445. [PMID: 29749407 PMCID: PMC5945873 DOI: 10.1038/s41598-018-25753-6] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 04/26/2018] [Indexed: 02/08/2023] Open
Abstract
The enteric nervous system (ENS) and a glutamate receptor (GluR), N-methyl-D-aspartate receptor (NMDAR), participate in gastric acid secretion (GAS) regulation. NMDARs are localized in different stomach cells; however, knowledge of NMDAR expression and function in the ENS is limited. In the present study, we clarified the types of stomach cells that express the NMDARs that are involved in GAS regulation. The pharmacological method of isolated stomach perfusion by Ghosh and Shild combined with direct mapping of NMDARs by fluorescence microscopy in the rat stomach was employed. By immunofluorescence labeling with an anti-NMDA-NR1 antibody, NMDARs were found to be highly expressed in nerve cells of the submucosal and myenteric plexuses in the stomach. The exact localization of the NMDARs relevant to GAS and its mechanism of action were determined by stimulating different receptors of neuronal and stomach cells using specific secretagogues for NMDA and by selectively blocking those receptors. NMDARs relevant to GAS stimulation are mainly localized in cholinergic interneurons; however, all of the nerve cells of the submucosal ganglia are involved in the stimulating process. In addition, the NMDARs in parietal cells are involved in gastric acid inhibition via influencing H2-histamine receptors.
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Affiliation(s)
- Iuliia Golovynska
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, P.R. China
| | - Tatiana V Beregova
- Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, 01601, Kyiv, Ukraine
| | - Tatiana M Falalyeyeva
- Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, 01601, Kyiv, Ukraine
| | - Ludmila I Stepanova
- Institute of Biology and Medicine, Taras Shevchenko National University of Kyiv, 01601, Kyiv, Ukraine
| | - Sergii Golovynskyi
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, P.R. China
| | - Junle Qu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, P.R. China.
| | - Tymish Y Ohulchanskyy
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, P.R. China.
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Golovynskyi S, Datsenko OI, Seravalli L, Trevisi G, Frigeri P, Babichuk IS, Golovynska I, Qu J. Interband Photoconductivity of Metamorphic InAs/InGaAs Quantum Dots in the 1.3-1.55-μm Window. Nanoscale Res Lett 2018; 13:103. [PMID: 29663094 PMCID: PMC5902441 DOI: 10.1186/s11671-018-2524-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 04/10/2018] [Indexed: 05/09/2023]
Abstract
Photoelectric properties of the metamorphic InAs/In x Ga1 - xAs quantum dot (QD) nanostructures were studied at room temperature, employing photoconductivity (PC) and photoluminescence spectroscopies, electrical measurements, and theoretical modeling. Four samples with different stoichiometry of In x Ga1 - xAs cladding layer have been grown: indium content x was 0.15, 0.24, 0.28, and 0.31. InAs/In0.15Ga0.85As QD structure was found to be photosensitive in the telecom range at 1.3 μm. As x increases, a redshift was observed for all the samples, the structure with x = 0.31 was found to be sensitive near 1.55 μm, i.e., at the third telecommunication window. Simultaneously, only a slight decrease in the QD PC was recorded for increasing x, thus confirming a good photoresponse comparable with the one of In0.15Ga0.75As structures and of GaAs-based QD nanostructures. Also, the PC reduction correlate with the similar reduction of photoluminescence intensity. By simulating theoretically the quantum energy system and carrier localization in QDs, we gained insight into the PC mechanism and were able to suggest reasons for the photocurrent reduction, by associating them with peculiar behavior of defects in such a type of structures. All this implies that metamorphic QDs with a high x are valid structures for optoelectronic infrared light-sensitive devices.
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Affiliation(s)
- Sergii Golovynskyi
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060 People’s Republic of China
- Institute of Semiconductor Physics, NAS of Ukraine, Kyiv, 03028 Ukraine
| | - Oleksandr I. Datsenko
- Department of Physics, Taras Shevchenko National University of Kyiv, Kyiv, 01601 Ukraine
| | - Luca Seravalli
- Institute of Materials for Electronics and Magnetism, CNR-IMEM, I-43124 Parma, Italy
| | - Giovanna Trevisi
- Institute of Materials for Electronics and Magnetism, CNR-IMEM, I-43124 Parma, Italy
| | - Paola Frigeri
- Institute of Materials for Electronics and Magnetism, CNR-IMEM, I-43124 Parma, Italy
| | - Ivan S. Babichuk
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060 People’s Republic of China
- Institute of Semiconductor Physics, NAS of Ukraine, Kyiv, 03028 Ukraine
| | - Iuliia Golovynska
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060 People’s Republic of China
| | - Junle Qu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060 People’s Republic of China
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20
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Golovynskyi S, Seravalli L, Datsenko O, Trevisi G, Frigeri P, Gombia E, Golovynska I, Kondratenko SV, Qu J, Ohulchanskyy TY. Comparative Study of Photoelectric Properties of Metamorphic InAs/InGaAs and InAs/GaAs Quantum Dot Structures. Nanoscale Res Lett 2017; 12:335. [PMID: 28482647 PMCID: PMC5419954 DOI: 10.1186/s11671-017-2091-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 04/20/2017] [Indexed: 05/09/2023]
Abstract
Optical and photoelectric properties of metamorphic InAs/InGaAs and conventional pseudomorphic InAs/GaAs quantum dot (QD) structures were studied. We used two different electrical contact configurations that allowed us to have the current flow (i) only through QDs and embedding layers and (ii) through all the structure, including the GaAs substrate (wafer). Different optical transitions between states of QDs, wetting layers, GaAs or InGaAs buffers, and defect-related centers were studied by means of photovoltage (PV), photoconductivity (PC), photoluminescence (PL), and absorption spectroscopies. It was shown that the use of the InGaAs buffer spectrally shifted the maximum of the QD PL band to 1.3 μm (telecommunication range) without a decrease in the yield. Photosensitivity for the metamorphic QDs was found to be higher than that in GaAs buffer while the photoresponses for both metamorphic and pseudomorphic buffer layers were similar. The mechanisms of PV and PC were discussed for both structures. The dissimilarities in properties of the studied structures are explained in terms of the different design. A critical influence of the defects on the photoelectrical properties of both structures was observed in the spectral range from 0.68 to 1.0 eV for contact configuration (ii), i.e., in the case of electrically active GaAs wafer. No effect of such defects on the photoelectric spectra was found for configuration (i), when the structures were contacted to the top and bottom buffers; only a 0.83 eV feature was observed in the photocurrent spectrum of pseudomorphic structure and interpreted to be related to defects close to InAs/GaAs QDs.
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Affiliation(s)
- Sergii Golovynskyi
- College of Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, 518060 Shenzhen, People’s Republic of China
- Institute of Semiconductor Physics, NAS of Ukraine, 45 Nauki Ave, 03028 Kyiv, Ukraine
| | - Luca Seravalli
- Institute of Materials for Electronics and Magnetism, CNR-IMEM, Parco delle Scienze 37a, I-43100 Parma, Italy
| | - Oleksandr Datsenko
- Department of Physics, Taras Shevchenko National University of Kyiv, 64 Volodymyrska St, 01601 Kyiv, Ukraine
| | - Giovanna Trevisi
- Institute of Materials for Electronics and Magnetism, CNR-IMEM, Parco delle Scienze 37a, I-43100 Parma, Italy
| | - Paola Frigeri
- Institute of Materials for Electronics and Magnetism, CNR-IMEM, Parco delle Scienze 37a, I-43100 Parma, Italy
| | - Enos Gombia
- Institute of Materials for Electronics and Magnetism, CNR-IMEM, Parco delle Scienze 37a, I-43100 Parma, Italy
| | - Iuliia Golovynska
- College of Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, 518060 Shenzhen, People’s Republic of China
| | - Serhiy V. Kondratenko
- Department of Physics, Taras Shevchenko National University of Kyiv, 64 Volodymyrska St, 01601 Kyiv, Ukraine
| | - Junle Qu
- College of Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, 518060 Shenzhen, People’s Republic of China
| | - Tymish Y. Ohulchanskyy
- College of Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, 518060 Shenzhen, People’s Republic of China
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21
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Golovynskyi S, Seravalli L, Datsenko O, Kozak O, Kondratenko SV, Trevisi G, Frigeri P, Gombia E, Lavoryk SR, Golovynska I, Ohulchanskyy TY, Qu J. Bipolar Effects in Photovoltage of Metamorphic InAs/InGaAs/GaAs Quantum Dot Heterostructures: Characterization and Design Solutions for Light-Sensitive Devices. Nanoscale Res Lett 2017; 12:559. [PMID: 28983869 PMCID: PMC5629186 DOI: 10.1186/s11671-017-2331-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 09/27/2017] [Indexed: 05/24/2023]
Abstract
The bipolar effect of GaAs substrate and nearby layers on photovoltage of vertical metamorphic InAs/InGaAs in comparison with pseudomorphic (conventional) InAs/GaAs quantum dot (QD) structures were studied. Both metamorphic and pseudomorphic structures were grown by molecular beam epitaxy, using bottom contacts at either the grown n +-buffers or the GaAs substrate. The features related to QDs, wetting layers, and buffers have been identified in the photoelectric spectra of both the buffer-contacted structures, whereas the spectra of substrate-contacted samples showed the additional onset attributed to EL2 defect centers. The substrate-contacted samples demonstrated bipolar photovoltage; this was suggested to take place as a result of the competition between components related to QDs and their cladding layers with the substrate-related defects and deepest grown layer. No direct substrate effects were found in the spectra of the buffer-contacted structures. However, a notable negative influence of the n +-GaAs buffer layer on the photovoltage and photoconductivity signal was observed in the InAs/InGaAs structure. Analyzing the obtained results and the performed calculations, we have been able to provide insights on the design of metamorphic QD structures, which can be useful for the development of novel efficient photonic devices.
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Affiliation(s)
- Sergii Golovynskyi
- College of Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, 518060 People’s Republic of China
- Institute of Semiconductor Physics, National Academy of Sciences, Kyiv, 03028 Ukraine
| | - Luca Seravalli
- Institute of Materials for Electronics and Magnetism, CNR-IMEM, 43100 Parma, Italy
| | - Oleksandr Datsenko
- Department of Physics, Taras Shevchenko National University of Kyiv, Kyiv, 01601 Ukraine
| | - Oleksii Kozak
- Department of Physics, Taras Shevchenko National University of Kyiv, Kyiv, 01601 Ukraine
| | - Serhiy V. Kondratenko
- Department of Physics, Taras Shevchenko National University of Kyiv, Kyiv, 01601 Ukraine
| | - Giovanna Trevisi
- Institute of Materials for Electronics and Magnetism, CNR-IMEM, 43100 Parma, Italy
| | - Paola Frigeri
- Institute of Materials for Electronics and Magnetism, CNR-IMEM, 43100 Parma, Italy
| | - Enos Gombia
- Institute of Materials for Electronics and Magnetism, CNR-IMEM, 43100 Parma, Italy
| | - Sergii R. Lavoryk
- Institute of Semiconductor Physics, National Academy of Sciences, Kyiv, 03028 Ukraine
| | - Iuliia Golovynska
- College of Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, 518060 People’s Republic of China
| | - Tymish Y. Ohulchanskyy
- College of Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, 518060 People’s Republic of China
| | - Junle Qu
- College of Optoelectronic Engineering, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen, 518060 People’s Republic of China
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