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Shestovskaya MV, Luss AL, Bezborodova OA, Makarov VV, Keskinov AA. Iron Oxide Nanoparticles in Cancer Treatment: Cell Responses and the Potency to Improve Radiosensitivity. Pharmaceutics 2023; 15:2406. [PMID: 37896166 PMCID: PMC10610190 DOI: 10.3390/pharmaceutics15102406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 09/14/2023] [Accepted: 09/26/2023] [Indexed: 10/29/2023] Open
Abstract
The main concept of radiosensitization is making the tumor tissue more responsive to ionizing radiation, which leads to an increase in the potency of radiation therapy and allows for decreasing radiation dose and the concomitant side effects. Radiosensitization by metal oxide nanoparticles is widely discussed, but the range of mechanisms studied is not sufficiently codified and often does not reflect the ability of nanocarriers to have a specific impact on cells. This review is focused on the magnetic iron oxide nanoparticles while they occupied a special niche among the prospective radiosensitizers due to unique physicochemical characteristics and reactivity. We collected data about the possible molecular mechanisms underlying the radiosensitizing effects of iron oxide nanoparticles (IONPs) and the main approaches to increase their therapeutic efficacy by variable modifications.
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Affiliation(s)
- Maria V. Shestovskaya
- Federal State Budgetary Institution “Centre for Strategic Planning and Management of Biomedical Health Risks” of the Federal Medical Biological Agency, Schukinskaya st. 5/1, Moscow 119435, Russia; (A.L.L.)
| | - Anna L. Luss
- Federal State Budgetary Institution “Centre for Strategic Planning and Management of Biomedical Health Risks” of the Federal Medical Biological Agency, Schukinskaya st. 5/1, Moscow 119435, Russia; (A.L.L.)
- The Department of Technology of Chemical, Pharmaceutical and Cosmetic Products Mendeleev of University of Chemical Technology of Russia, Miusskaya sq. 9, Moscow 125047, Russia
| | - Olga A. Bezborodova
- P. Hertsen Moscow Oncology Research Institute of the National Medical Research Radiological Centre, Ministry of Health of the Russian Federation, 2nd Botkinskiy p. 3, Moscow 125284, Russia;
| | - Valentin V. Makarov
- Federal State Budgetary Institution “Centre for Strategic Planning and Management of Biomedical Health Risks” of the Federal Medical Biological Agency, Schukinskaya st. 5/1, Moscow 119435, Russia; (A.L.L.)
| | - Anton A. Keskinov
- Federal State Budgetary Institution “Centre for Strategic Planning and Management of Biomedical Health Risks” of the Federal Medical Biological Agency, Schukinskaya st. 5/1, Moscow 119435, Russia; (A.L.L.)
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2
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Musolino E, Pagiatakis C, Pierin F, Sabatino D, Finzi G, Gornati R, Bernardini G, Papait R. A chromEM-staining protocol optimized for cardiac tissue. Front Cell Dev Biol 2023; 11:1123114. [PMID: 37476155 PMCID: PMC10354428 DOI: 10.3389/fcell.2023.1123114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 06/23/2023] [Indexed: 07/22/2023] Open
Abstract
Three-dimensional (3D) chromatin organization has a key role in defining the transcription program of cells during development. Its alteration is the cause of gene expression changes responsible for several diseases. Thus, we need new tools to study this aspect of gene expression regulation. To this end, ChromEM was recently developed: this is an electron-microscopy staining technique that selectively marks nuclear DNA without altering its structure and, thus, allows better visualization of 3D chromatin conformation. However, despite increasingly frequent application of this staining technique on cells, it has not yet been applied to visualize chromatin ultrastructure in tissues. Here, we provide a protocol to carry out ChromEM on myocardial tissue harvested from the left ventricles of C57BL/6J mice and use this in combination with transmission electron microscopy (TEM) to measure some morphological parameters of peripheral heterochromatin in cardiomyocytes. This protocol could also be used, in combination with electron tomography, to study 3D chromatin organization in cardiomyocytes in different aspects of heart pathobiology (e.g., heart development, cardiac aging, and heart failure) as well as help to set-up ChromEM in other tissues.
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Affiliation(s)
- Elettra Musolino
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | - Christina Pagiatakis
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
- Department of Cardiovascular Medicine, Humanitas Research Hospital–IRCCS, Rozzano (MI), Italy
| | - Federica Pierin
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | | | - Giovanna Finzi
- Department of Pathology, ASST Sette Laghi, Varese, Italy
| | - Rosalba Gornati
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | - Giovanni Bernardini
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | - Roberto Papait
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
- Department of Cardiovascular Medicine, Humanitas Research Hospital–IRCCS, Rozzano (MI), Italy
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Valjarevic S, Jovanovic MB, Miladinovic N, Cumic J, Dugalic S, Corridon PR, Pantic I. Gray-Level Co-occurrence Matrix Analysis of Nuclear Textural Patterns in Laryngeal Squamous Cell Carcinoma: Focus on Artificial Intelligence Methods. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2023; 29:1220-1227. [PMID: 37749686 DOI: 10.1093/micmic/ozad042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/05/2023] [Accepted: 03/10/2023] [Indexed: 09/27/2023]
Abstract
Gray-level co-occurrence matrix (GLCM) and discrete wavelet transform (DWT) analyses are two contemporary computational methods that can identify discrete changes in cell and tissue textural features. Previous research has indicated that these methods may be applicable in the pathology for identification and classification of various types of cancers. In this study, we present findings that squamous epithelial cells in laryngeal carcinoma, which appear morphologically intact during conventional pathohistological evaluation, have distinct nuclear GLCM and DWT features. The average values of nuclear GLCM indicators of these cells, such as angular second moment, inverse difference moment, and textural contrast, substantially differ when compared to those in noncancerous tissue. In this work, we also propose machine learning models based on random forests and support vector machine that can be successfully trained to separate the cells using GLCM and DWT quantifiers as input data. We show that, based on a limited cell sample, these models have relatively good classification accuracy and discriminatory power, which makes them suitable candidates for future development of AI-based sensors potentially applicable in laryngeal carcinoma diagnostic protocols.
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Affiliation(s)
- Svetlana Valjarevic
- University of Belgrade, Faculty of Medicine, Clinical Hospital Center "Zemun", Vukova 9, RS-11080 Belgrade, Serbia
| | - Milan B Jovanovic
- University of Belgrade, Faculty of Medicine, Clinical Hospital Center "Zemun", Vukova 9, RS-11080 Belgrade, Serbia
| | - Nenad Miladinovic
- University of Belgrade, Faculty of Medicine, Clinical Hospital Center "Zemun", Vukova 9, RS-11080 Belgrade, Serbia
| | - Jelena Cumic
- University of Belgrade, Faculty of Medicine, University Clinical Centre of Serbia, Dr. Koste Todorovića 8, RS-11129, Belgrade, Serbia
| | - Stefan Dugalic
- University of Belgrade, Faculty of Medicine, University Clinical Centre of Serbia, Dr. Koste Todorovića 8, RS-11129, Belgrade, Serbia
| | - Peter R Corridon
- Department of Immunology and Physiology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Shakhbout Bin Sultan St - Hadbat Al Za'faranah - Zone 1 - Abu Dhabi, UAE
- Biomedical Engineering, Healthcare Engineering Innovation Center, Khalifa University of Science and Technology, Shakhbout Bin Sultan St - Hadbat Al Za'faranah - Zone 1 - Abu Dhabi, UAE
- Center for Biotechnology, Khalifa University of Science and Technology, Shakhbout Bin Sultan St - Hadbat Al Za'faranah - Zone 1 - Abu Dhabi, UAE
| | - Igor Pantic
- University of Belgrade, Faculty of Medicine, Department of Medical Physiology, Višegradska 26/2, RS-11129 Belgrade, Serbia
- Department of Pharmacology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Shakhbout Bin Sultan St - Hadbat Al Za'faranah - Zone 1 - Abu Dhabi, UAE
- University of Haifa, 199 Abba Hushi Blvd, Mount Carmel, Haifa IL-3498838, Israel
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Pantic I, Cumic J, Dugalic S, Petroianu GA, Corridon PR. Gray level co-occurrence matrix and wavelet analyses reveal discrete changes in proximal tubule cell nuclei after mild acute kidney injury. Sci Rep 2023; 13:4025. [PMID: 36899130 PMCID: PMC10006226 DOI: 10.1038/s41598-023-31205-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 03/08/2023] [Indexed: 03/12/2023] Open
Abstract
Acute kidney injury (AKI) relates to an abrupt reduction in renal function resulting from numerous conditions. Morbidity, mortality, and treatment costs related to AKI are relatively high. This condition is strongly associated with damage to proximal tubule cells (PTCs), generating distinct patterns of transcriptional and epigenetic alterations that result in structural changes in the nuclei of this epithelium. To this date, AKI-related nuclear chromatin redistribution in PTCs is poorly understood, and it is unclear whether changes in PTC chromatin patterns can be detected using conventional microscopy during mild AKI, which can progress to more debilitating forms of injury. In recent years, gray level co-occurrence matrix (GLCM) analysis and discrete wavelet transform (DWT) have emerged as potentially valuable methods for identifying discrete structural changes in nuclear chromatin architecture that are not visible during the conventional histopathological exam. Here we present findings indicating that GLCM and DWT methods can be successfully used in nephrology to detect subtle nuclear morphological alterations associated with mild tissue injury demonstrated in rodents by inducing a mild form of AKI through ischemia-reperfusion injury. Our results show that mild ischemic AKI is associated with the reduction of local textural homogeneity of PTC nuclei quantified by GLCM and the increase of nuclear structural heterogeneity indirectly assessed with DWT energy coefficients. This rodent model allowed us to show that mild ischemic AKI is associated with the significant reduction of textural homogeneity of PTC nuclei, indirectly assessed by GLCM indicators and DWT energy coefficients.
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Affiliation(s)
- Igor Pantic
- Faculty of Medicine, Department of Medical Physiology, Laboratory for Cellular Physiology, University of Belgrade, Visegradska 26/II, 11129, Belgrade, Serbia
- University of Haifa, 199 Abba Hushi Blvd, Mount Carmel, 3498838, Haifa, Israel
- Department of Pharmacology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, UAE
| | - Jelena Cumic
- Faculty of Medicine, University of Belgrade, University Clinical Center of Serbia, Dr. Koste Todorovica 8, 11129, Belgrade, Serbia
| | - Stefan Dugalic
- Faculty of Medicine, University of Belgrade, University Clinical Center of Serbia, Dr. Koste Todorovica 8, 11129, Belgrade, Serbia
| | - Georg A Petroianu
- Department of Pharmacology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, UAE
| | - Peter R Corridon
- Department of Immunology and Physiology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, UAE.
- Healthcare Engineering Innovation Center, Biomedical Engineering, Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, UAE.
- Center for Biotechnology, Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, UAE.
- Indiana Center for Biological Microscopy, Indiana University School of Medicine, Indianapolis, IN, USA.
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Pantic IV, Shakeel A, Petroianu GA, Corridon PR. Analysis of Vascular Architecture and Parenchymal Damage Generated by Reduced Blood Perfusion in Decellularized Porcine Kidneys Using a Gray Level Co-occurrence Matrix. Front Cardiovasc Med 2022; 9:797283. [PMID: 35360034 PMCID: PMC8963813 DOI: 10.3389/fcvm.2022.797283] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 02/07/2022] [Indexed: 12/15/2022] Open
Abstract
There is no cure for kidney failure, but a bioartificial kidney may help address this global problem. Decellularization provides a promising platform to generate transplantable organs. However, maintaining a viable vasculature is a significant challenge to this technology. Even though angiography offers a valuable way to assess scaffold structure/function, subtle changes are overlooked by specialists. In recent years, various image analysis methods in radiology have been suggested to detect and identify subtle changes in tissue architecture. The aim of our research was to apply one of these methods based on a gray level co-occurrence matrix (Topalovic et al.) computational algorithm in the analysis of vascular architecture and parenchymal damage generated by hypoperfusion in decellularized porcine. Perfusion decellularization of the whole porcine kidneys was performed using previously established protocols. We analyzed and compared angiograms of kidneys subjected to pathophysiological arterial perfusion of whole blood. For regions of interest Santos et al. covering kidney medulla and the main elements of the vascular network, five major GLCM features were calculated: angular second moment as an indicator of textural uniformity, inverse difference moment as an indicator of textural homogeneity, GLCM contrast, GLCM correlation, and sum variance of the co-occurrence matrix. In addition to GLCM, we also performed discrete wavelet transform analysis of angiogram ROIs by calculating the respective wavelet coefficient energies using high and low-pass filtering. We report statistically significant changes in GLCM and wavelet features, including the reduction of the angular second moment and inverse difference moment, indicating a substantial rise in angiogram textural heterogeneity. Our findings suggest that the GLCM method can be successfully used as an addition to conventional fluoroscopic angiography analyses of micro/macrovascular integrity following in vitro blood perfusion to investigate scaffold integrity. This approach is the first step toward developing an automated network that can detect changes in the decellularized vasculature.
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Affiliation(s)
- Igor V Pantic
- Department of Medical Physiology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia.,University of Haifa, Haifa, Israel
| | - Adeeba Shakeel
- Department of Pharmacology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Georg A Petroianu
- Department of Immunology and Physiology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Peter R Corridon
- Department of Pharmacology, College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.,Wake Forest Institute for Regenerative Medicine, Medical Center Boulevard, Winston-Salem, NC, United States.,Biomedical Engineering, Healthcare Engineering Innovation Center, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.,Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
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Transcriptional Stress Induces Chromatin Relocation of the Nucleotide Excision Repair Factor XPG. Int J Mol Sci 2021; 22:ijms22126589. [PMID: 34205418 PMCID: PMC8235791 DOI: 10.3390/ijms22126589] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 06/15/2021] [Accepted: 06/18/2021] [Indexed: 12/14/2022] Open
Abstract
Endonuclease XPG participates in nucleotide excision repair (NER), in basal transcription, and in the processing of RNA/DNA hybrids (R-loops): the malfunction of these processes may cause genome instability. Here, we investigate the chromatin association of XPG during basal transcription and after transcriptional stress. The inhibition of RNA polymerase II with 5,6-dichloro-l-β-D-ribofuranosyl benzimidazole (DRB), or actinomycin D (AD), and of topoisomerase I with camptothecin (CPT) resulted in an increase in chromatin-bound XPG, with concomitant relocation by forming nuclear clusters. The cotranscriptional activators p300 and CREB-binding protein (CREBBP), endowed with lysine acetyl transferase (KAT) activity, interact with and acetylate XPG. Depletion of both KATs by RNA interference, or chemical inhibition with C646, significantly reduced XPG acetylation. However, the loss of KAT activity also resulted in increased chromatin association and the relocation of XPG, indicating that these processes were induced by transcriptional stress and not by reduced acetylation. Transcription inhibitors, including C646, triggered the R-loop formation and phosphorylation of histone H2AX (γ-H2AX). Proximity ligation assay (PLA) showed that XPG colocalized with R-loops, indicating the recruitment of the protein to these structures. These results suggest that transcriptional stress-induced XPG relocation may represent recruitment to sites of R-loop processing.
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