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Luong NC, Kawamura H, Ikeda H, Roppongi RT, Shibata A, Hu J, Jiang JG, Yu DS, Held KD. ATR signaling controls the bystander responses of human chondrosarcoma cells by promoting RAD51-dependent DNA repair. Int J Radiat Biol 2024; 100:724-735. [PMID: 38442236 PMCID: PMC11060906 DOI: 10.1080/09553002.2024.2324479] [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: 09/19/2023] [Accepted: 02/05/2024] [Indexed: 03/07/2024]
Abstract
PURPOSE Radiation-induced bystander effect (RIBE) frequently is seen as DNA damage in unirradiated bystander cells, but the repair processes initiated in response to that DNA damage are not well understood. RIBE-mediated formation of micronuclei (MN), a biomarker of persistent DNA damage, was previously observed in bystander normal fibroblast (AG01522) cells, but not in bystander human chondrosarcoma (HTB94) cells. The molecular mechanisms causing this disparity are not clear. Herein, we investigate the role of DNA repair in the bystander responses of the two cell lines. METHODS Cells were irradiated with X-rays and immediately co-cultured with un-irradiated cells using a trans-well insert system in which they share the same medium. The activation of DNA damage response (DDR) proteins was detected by immunofluorescence staining or Western blotting. MN formation was examined by the cytokinesis-block MN assay, which is a robust method to detect persistent DNA damage. RESULTS Immunofluorescent foci of γH2AX and 53BP1, biomarkers of DNA damage and repair, revealed a greater capacity for DNA repair in HTB94 cells than in AG01522 cells in both irradiated and bystander populations. Autophosphorylation of ATR at the threonine 1989 site was expressed at a greater level in HTB94 cells compared to AG01522 cells at the baseline and in response to hydroxyurea treatment or exposure to 1 Gy of X-rays. An inhibitor of ATR, but not of ATM, promoted MN formation in bystander HTB94 cells. In contrast, no effect of either inhibitor was observed in bystander AG01522 cells, indicating that ATR signaling might be a pivotal pathway to preventing the MN formation in bystander HTB94 cells. Supporting this idea, we found an ATR-dependent increase in the fractions of bystander HTB94 cells with pRPA2 S33 and RAD51 foci. A blocker of RAD51 facilitated MN formation in bystander HTB94 cells. CONCLUSION Our results indicate that HTB94 cells were likely more efficient in DNA repair than AG01522 cells, specifically via ATR signaling, which inhibited the bystander signal-induced MN formation. This study highlights the significance of DNA repair efficiency in bystander cell responses.
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Affiliation(s)
- Nho Cong Luong
- Gunma University Initiative for Advanced Research, Gunma University, Gunma, Japan
- Department of Radiation Oncology and Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA, USA
| | - Hidemasa Kawamura
- Gunma University Heavy Ion Medical Center, Gunma University, Gunma, Japan
| | - Hiroko Ikeda
- Gunma University Initiative for Advanced Research, Gunma University, Gunma, Japan
- Department of Life Sciences, Faculty of Science and Engineering, Kindai University, Osaka, Japan
| | - Reiko T Roppongi
- Gunma University Initiative for Advanced Research, Gunma University, Gunma, Japan
| | - Atsushi Shibata
- Gunma University Initiative for Advanced Research, Gunma University, Gunma, Japan
- Division of Molecular Oncological Pharmacy, Faculty of Pharmacy, Keio University, Tokyo, Japan
| | - Jiaxuan Hu
- Department of Radiation Oncology and Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA, USA
| | - Jinmeng G Jiang
- Department of Radiation Oncology and Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA, USA
| | - David S Yu
- Department of Radiation Oncology and Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA, USA
| | - Kathryn D Held
- Gunma University Initiative for Advanced Research, Gunma University, Gunma, Japan
- Department of Radiation Oncology, Massachusetts General Hospital, and Harvard Medical School, Boston, MA, USA
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Fan N, Zhang L, Wang Z, Ding H, Yue Z. Ivermectin Inhibits Bladder Cancer Cell Growth and Induces Oxidative Stress and DNA Damage. Anticancer Agents Med Chem 2024; 24:348-357. [PMID: 38375808 DOI: 10.2174/0118715206274095231106042833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 10/05/2023] [Accepted: 10/16/2023] [Indexed: 02/21/2024]
Abstract
BACKGROUND Bladder cancer is the most common malignant tumor of the urinary system. Nevertheless, current therapies do not provide satisfactory results. It is imperative that novel strategies should be developed for treating bladder cancer. OBJECTIVES To evaluate the effect of a broad-spectrum anti-parasitic agent, Ivermectin, on bladder cancer cells in vitro and in vivo. METHODS CCK-8 and EdU incorporation assays were used to evaluate cell proliferation. Apoptosis was detected by flow cytometry, TUNEL assay, and western blotting. Flow cytometry and DCFH-DA assay were used to analyze the reactive oxygen species (ROS) levels. DNA damage was determined by Neutral COMET assay and γ H2AX expression. Proteins related to apoptosis and DNA damage pathways were determined by WB assay. Xenograft tumor models in nude mice were used to investigate the anti-cancer effect of Ivermectin in vivo. RESULTS Our study showed that in vitro and in vivo, Ivermectin inhibited the growth of bladder cancer cells. In addition, Ivermectin could induce apoptosis, ROS production, DNA damage, and activate ATM/P53 pathwayrelated proteins in bladder cancer cells. CONCLUSIONS According to these findings, Ivermectin may be a potential therapeutic candidate against bladder cancer due to its significant anti-cancer effect.
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Affiliation(s)
- Ning Fan
- Institute of Urology, Key Laboratory of Gansu Urological Diseases, Gansu Nephro-Urological Clinical Center, Department of Urology, Lanzhou University Second Hospital, Lanzhou, 730030, China
| | - Lixiu Zhang
- Department of Clinical Laboratory, Maternal and Child Health Hospital of Gansu. Lanzhou, 730050, China
| | - Zhiping Wang
- Institute of Urology, Key Laboratory of Gansu Urological Diseases, Gansu Nephro-Urological Clinical Center, Department of Urology, Lanzhou University Second Hospital, Lanzhou, 730030, China
| | - Hui Ding
- Institute of Urology, Key Laboratory of Gansu Urological Diseases, Gansu Nephro-Urological Clinical Center, Department of Urology, Lanzhou University Second Hospital, Lanzhou, 730030, China
| | - Zhongjin Yue
- Institute of Urology, Key Laboratory of Gansu Urological Diseases, Gansu Nephro-Urological Clinical Center, Department of Urology, Lanzhou University Second Hospital, Lanzhou, 730030, China
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Sitnikov D, Revkova V, Ilina I, Shatalova R, Komarov P, Struleva E, Konoplyannikov M, Kalsin V, Baklaushev V. Sensitivity of Neuroblastoma and Induced Neural Progenitor Cells to High-Intensity THz Radiation. Int J Mol Sci 2023; 24:ijms24076558. [PMID: 37047534 PMCID: PMC10095325 DOI: 10.3390/ijms24076558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/25/2023] [Accepted: 03/29/2023] [Indexed: 04/03/2023] Open
Abstract
THz radiation induces a variety of processes in cells and has attracted the attention of researchers in recent decades. Here, data on the effects of high-intensity terahertz (THz) radiation on human directly reprogrammed neural progenitor cells (drNPCs) and on neuroblastoma cells (SK-N-BE (2)) were obtained for the first time. The results demonstrated that the exposure of non-tumor and tumor cells to broadband (0.1–3 THz) THz pulses with the intensity of 21 GW/cm2 and the electric field strength of 2.8 MV/cm for 30 min induced neither a noticeable genotoxic effect nor a statistically significant change in the proliferative activity and cell differentiation. It was also shown that the combined effect of THz radiation and salinomycin, a promising antitumor agent, on neuroblastoma cells did not enhance the genotoxic effect of this antibiotic. However, further studies involving chemotherapy drugs and other exposure parameters are warranted to introduce this new concept into anti-tumor clinical practice and to enhance the efficacy of the existing approaches.
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Affiliation(s)
- Dmitry Sitnikov
- Joint Institute for High Temperatures, Russian Academy of Sciences, 125412 Moscow, Russia
- Correspondence:
| | - Veronika Revkova
- Federal Research and Clinical Center of Specialized Medical Care and Medical Technologies, Federal Medical-Biological Agency of Russia, 119435 Moscow, Russia
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Inna Ilina
- Joint Institute for High Temperatures, Russian Academy of Sciences, 125412 Moscow, Russia
| | - Rimma Shatalova
- Center for Genetics and Life Sciences, Division of Genetics and Genetic Technologies, Sirius University of Science and Technology, 354340 Sochi, Russia
| | - Pavel Komarov
- Joint Institute for High Temperatures, Russian Academy of Sciences, 125412 Moscow, Russia
| | - Evgenia Struleva
- Joint Institute for High Temperatures, Russian Academy of Sciences, 125412 Moscow, Russia
| | - Mikhail Konoplyannikov
- Federal Research and Clinical Center of Specialized Medical Care and Medical Technologies, Federal Medical-Biological Agency of Russia, 119435 Moscow, Russia
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, 119435 Moscow, Russia
| | - Vladimir Kalsin
- Federal Research and Clinical Center of Specialized Medical Care and Medical Technologies, Federal Medical-Biological Agency of Russia, 119435 Moscow, Russia
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Vladimir Baklaushev
- Federal Research and Clinical Center of Specialized Medical Care and Medical Technologies, Federal Medical-Biological Agency of Russia, 119435 Moscow, Russia
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
- Federal Center of Brain Research and Neurotechnologies, Federal Medical-Biological Agency, 117513 Moscow, Russia
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Solarczyk K, Kordon-Kiszala M. Let’s not take DNA breaks for granted. The importance of direct detection of DNA breaks for the successful development of DDR inhibitors. Front Cell Dev Biol 2023; 11:1118716. [PMID: 36968210 PMCID: PMC10034645 DOI: 10.3389/fcell.2023.1118716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 02/06/2023] [Indexed: 03/11/2023] Open
Abstract
Successful development of a drug candidate requires availability of robust methods that enable precise and quantitative assessment of the biological effects exerted by the molecule of interest. In case of DNA Damage Response inhibitors, the most proximal readout of their efficiency is the level of induced DNA damage, usually - DNA breaks. Here we review the methods that are currently used for the assessment of the level of DNA damage, with special attention to their specificity and sensitivity. We also discuss the most common problems and challenges related to the classic IF or IHC methods that indirectly report on the activation of DNA repair mechanisms as the downstream effects of occurrence of the DNA lesions. Finally, we highlight the advent of new tools, such as STRIDE, which have the potential to transform the landscape of DDR functional biomarkers.
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DNA Damage Response Differentially Affects BoHV-1 Gene Transcription in Cell Type-Dependent Manners. Biomedicines 2022; 10:biomedicines10092282. [PMID: 36140380 PMCID: PMC9496131 DOI: 10.3390/biomedicines10092282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 08/30/2022] [Accepted: 09/06/2022] [Indexed: 11/17/2022] Open
Abstract
Bovine herpesvirus 1 (BoHV-1), an important pathogen of cattle, is also a promising oncolytic virus. Recent studies have demonstrated that the virus infection induces DNA damage and DNA damage response (DDR), potentially accounting for virus infection-induced cell death and oncolytic effects. However, whether the global DDR network affects BoHV-1 productive infection remains to be elucidated. In this study, we show that global DDR induced by ultraviolet (UV) irradiation prior to BoHV-1 infection differentially affected transcription of immediate early (IE) genes, such as infected cell protein 0 (bICP0) and bICP22, in a cell-type-dependent manner. In addition, UV-induced DDR may affect the stabilization of viral protein levels, such as glycoprotein C (gC) and gD, because the variation in mRNA levels of gC and gD as a consequence of UV treatment were not in line with the variation in individual protein levels. The virus productive infection also affects UV-primed DDR signaling, as demonstrated by the alteration of phosphorylated histone H2AX (γH2AX) protein levels and γH2AX formation following virus infection. Taken together, for the first time, we evidenced the interplay between UV-primed global DDR and BoHV-1 productive infection. UV-primed global DDR differentially modulates the transcription of virus genes and stabilization of virus protein. Vice versa, the virus infection may affect UV-primed DDR signaling.
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Ding X, Yuan W, Yang H, Liu C, Li S, Zhu L. β-Catenin-Specific Inhibitor, iCRT14, Promotes BoHV-1 Infection-Induced DNA Damage in Human A549 Lung Adenocarcinoma Cells by Enhancing Viral Protein Expression. Int J Mol Sci 2022; 23:ijms23042328. [PMID: 35216447 PMCID: PMC8878024 DOI: 10.3390/ijms23042328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 02/15/2022] [Accepted: 02/16/2022] [Indexed: 12/12/2022] Open
Abstract
Oncolytic bovine herpesvirus type 1 (BoHV-1) infection induces DNA damage in human lung adenocarcinoma cell line A549. However, the underlying mechanisms are not fully understood. We found that BoHV-1 infection decreased the steady-state protein levels of p53-binding protein 1 (53BP1), which plays a central role in dictating DNA damage repair and maintaining genomic stability. Furthermore, BoHV-1 impaired the formation of 53BP1 foci, suggesting that BoHV-1 inhibits 53BP1-mediated DNA damage repair. Interestingly, BoHV-1 infection redistributed intracellular β-catenin, and iCRT14 (5-[[2,5-Dimethyl-1-(3-pyridinyl)-1H-pyrrol-3-yl]methylene]-3-phenyl-2,4-thiazolidinedione), a β-catenin-specific inhibitor, enhanced certain viral protein expression, such as the envelope glycoproteins gC and gD, and enhanced virus infection-induced DNA damage. Therefore, for the first time, we provide evidence showing that BoHV-1 infection disrupts 53BP1-mediated DNA damage repair and suggest β-catenin as a potential host factor restricting both virus replication and DNA damage in A549 cells.
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Affiliation(s)
- Xiuyan Ding
- College of Life Science, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China; (X.D.); (H.Y.); (C.L.)
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
| | - Weifeng Yuan
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
| | - Hao Yang
- College of Life Science, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China; (X.D.); (H.Y.); (C.L.)
| | - Chang Liu
- College of Life Science, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China; (X.D.); (H.Y.); (C.L.)
| | - Shitao Li
- Department of Microbiology and Immunology, Tulane University, New Orleans, LA 70118, USA;
| | - Liqian Zhu
- College of Life Science, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China; (X.D.); (H.Y.); (C.L.)
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
- Key Laboratory of Microbial Diversity Research and Application of Hebei Province, College of Life Science, Hebei University, Baoding 071002, China
- Correspondence:
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Connolly C, Takahashi S, Miura H, Hiratani I, Gilbert N, Donaldson AD, Hiraga SI. SAF-A promotes origin licensing and replication fork progression to ensure robust DNA replication. J Cell Sci 2022; 135:jcs258991. [PMID: 34888666 DOI: 10.1242/jcs.258991] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 12/02/2021] [Indexed: 11/20/2022] Open
Abstract
The organisation of chromatin is closely intertwined with biological activities of chromosome domains, including transcription and DNA replication status. Scaffold-attachment factor A (SAF-A), also known as heterogeneous nuclear ribonucleoprotein U (HNRNPU), contributes to the formation of open chromatin structure. Here, we demonstrate that SAF-A promotes the normal progression of DNA replication and enables resumption of replication after inhibition. We report that cells depleted of SAF-A show reduced origin licensing in G1 phase and, consequently, reduced origin activation frequency in S phase. Replication forks also progress less consistently in cells depleted of SAF-A, contributing to reduced DNA synthesis rate. Single-cell replication timing analysis revealed two distinct effects of SAF-A depletion: first, the boundaries between early- and late-replicating domains become more blurred; and second, SAF-A depletion causes replication timing changes that tend to bring regions of discordant domain compartmentalisation and replication timing into concordance. Associated with these defects, SAF-A-depleted cells show elevated formation of phosphorylated histone H2AX (γ-H2AX) and tend to enter quiescence. Overall, we find that SAF-A protein promotes robust DNA replication to ensure continuing cell proliferation.
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Affiliation(s)
- Caitlin Connolly
- Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, UK
| | - Saori Takahashi
- RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
| | - Hisashi Miura
- RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
| | - Ichiro Hiratani
- RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo 650-0047, Japan
| | - Nick Gilbert
- MRC Human Genetics Unit, The University of Edinburgh, Crewe Rd, Edinburgh EH4 2XU, UK
| | - Anne D Donaldson
- Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, UK
| | - Shin-Ichiro Hiraga
- Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, UK
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Penninckx S, Pariset E, Cekanaviciute E, Costes SV. Quantification of radiation-induced DNA double strand break repair foci to evaluate and predict biological responses to ionizing radiation. NAR Cancer 2021; 3:zcab046. [PMID: 35692378 PMCID: PMC8693576 DOI: 10.1093/narcan/zcab046] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 11/08/2021] [Accepted: 12/17/2021] [Indexed: 08/08/2023] Open
Abstract
Radiation-induced foci (RIF) are nuclear puncta visualized by immunostaining of proteins that regulate DNA double-strand break (DSB) repair after exposure to ionizing radiation. RIF are a standard metric for measuring DSB formation and repair in clinical, environmental and space radiobiology. The time course and dose dependence of their formation has great potential to predict in vivo responses to ionizing radiation, predisposition to cancer and probability of adverse reactions to radiotherapy. However, increasing complexity of experimentally and therapeutically setups (charged particle, FLASH …) is associated with several confounding factors that must be taken into account when interpreting RIF values. In this review, we discuss the spatiotemporal characteristics of RIF development after irradiation, addressing the common confounding factors, including cell proliferation and foci merging. We also describe the relevant endpoints and mathematical models that enable accurate biological interpretation of RIF formation and resolution. Finally, we discuss the use of RIF as a biomarker for quantification and prediction of in vivo radiation responses, including important caveats relating to the choice of the biological endpoint and the detection method. This review intends to help scientific community design radiobiology experiments using RIF as a key metric and to provide suggestions for their biological interpretation.
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Affiliation(s)
- Sébastien Penninckx
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Medical Physics Department, Jules Bordet Institute, Université Libre de Bruxelles, 1 Rue Héger-Bordet, 1000 Brussels, Belgium
| | - Eloise Pariset
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, CA 94035, USA
- Universities Space Research Association, 615 National Avenue, Mountain View, CA 94043, USA
| | - Egle Cekanaviciute
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, CA 94035, USA
| | - Sylvain V Costes
- To whom correspondence should be addressed. Tel: +1 650 604 5343;
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Sitnikov DS, Ilina IV, Revkova VA, Rodionov SA, Gurova SA, Shatalova RO, Kovalev AV, Ovchinnikov AV, Chefonov OV, Konoplyannikov MA, Kalsin VA, Baklaushev VP. Effects of high intensity non-ionizing terahertz radiation on human skin fibroblasts. BIOMEDICAL OPTICS EXPRESS 2021; 12:7122-7138. [PMID: 34858704 PMCID: PMC8606137 DOI: 10.1364/boe.440460] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 10/06/2021] [Accepted: 10/19/2021] [Indexed: 05/08/2023]
Abstract
For the first time, the data have been obtained on the effects of high-intensity terahertz (THz) radiation (with the intensity of 30 GW/cm2, electric field strength of 3.5 MV/cm) on human skin fibroblasts. A quantitative estimation of the number of histone Н2АХ foci of phosphorylation was performed. The number of foci per cell was studied depending on the irradiation time, as well as on the THz pulse energy. The performed studies have shown that the appearance of the foci is not related to either the oxidative stress (the cells preserve their morphology, cytoskeleton structure, and the reactive oxygen species content does not exceed the control values), or the thermal effect of THz radiation. The prolonged irradiation of fibroblasts also did not result in a decrease of their proliferative index.
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Affiliation(s)
- Dmitry S. Sitnikov
- Joint Institute for High Temperatures of the Russian Academy of Sciences, Moscow, Russia
| | - Inna V. Ilina
- Joint Institute for High Temperatures of the Russian Academy of Sciences, Moscow, Russia
| | - Veronika A. Revkova
- Federal Research and Clinical Center of Specialized Medical Care and Medical Technologies FMBA of Russia, Moscow, Russia
| | - Sergey A. Rodionov
- N. N. Priorov National Medical Research Center of Traumatology and Orthopedics, Moscow, Russia
| | - Svetlana A. Gurova
- National Research nuclear University MEPhI Obninsk Institute for Nuclear Power Engineering, Obninsk, Russia
| | - Rimma O. Shatalova
- National Research nuclear University MEPhI Obninsk Institute for Nuclear Power Engineering, Obninsk, Russia
| | - Alexey V. Kovalev
- N. N. Priorov National Medical Research Center of Traumatology and Orthopedics, Moscow, Russia
| | - Andrey V. Ovchinnikov
- Joint Institute for High Temperatures of the Russian Academy of Sciences, Moscow, Russia
| | - Oleg V. Chefonov
- Joint Institute for High Temperatures of the Russian Academy of Sciences, Moscow, Russia
| | - Mikhail A. Konoplyannikov
- Federal Research and Clinical Center of Specialized Medical Care and Medical Technologies FMBA of Russia, Moscow, Russia
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Vladimir A. Kalsin
- Federal Research and Clinical Center of Specialized Medical Care and Medical Technologies FMBA of Russia, Moscow, Russia
| | - Vladimir P. Baklaushev
- Federal Research and Clinical Center of Specialized Medical Care and Medical Technologies FMBA of Russia, Moscow, Russia
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10
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Jeffery NN, Davidson C, Peslak SA, Kingsley PD, Nakamura Y, Palis J, Bulger M. Histone H2A.X phosphorylation and Caspase-Initiated Chromatin Condensation in late-stage erythropoiesis. Epigenetics Chromatin 2021; 14:37. [PMID: 34330317 PMCID: PMC8325214 DOI: 10.1186/s13072-021-00408-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 07/02/2021] [Indexed: 12/14/2022] Open
Abstract
Background Condensation of chromatin prior to enucleation is an essential component of terminal erythroid maturation, and defects in this process are associated with inefficient erythropoiesis and anemia. However, the mechanisms involved in this phenomenon are not well understood. Here, we describe a potential role for the histone variant H2A.X in erythropoiesis. Results We find in multiple model systems that this histone is essential for normal maturation, and that the loss of H2A.X in erythroid cells results in dysregulation in expression of erythroid-specific genes as well as a nuclear condensation defect. In addition, we demonstrate that erythroid maturation is characterized by phosphorylation at both S139 and Y142 on the C-terminal tail of H2A.X during late-stage erythropoiesis. Knockout of the kinase BAZ1B/WSTF results in loss of Y142 phosphorylation and a defect in nuclear condensation, but does not replicate extensive transcriptional changes to erythroid-specific genes observed in the absence of H2A.X. Conclusions We relate these findings to Caspase-Initiated Chromatin Condensation (CICC) in terminal erythroid maturation, where aspects of the apoptotic pathway are invoked while apoptosis is specifically suppressed. Supplementary Information The online version contains supplementary material available at 10.1186/s13072-021-00408-5.
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Affiliation(s)
- Nazish N Jeffery
- Center for Pediatric Biomedical Research, Department of Pediatrics, University of Rochester, Rochester, NY, USA
| | - Christina Davidson
- Wilmot Cancer Institute, Department of Biomedical Genetics, University of Rochester, Rochester, NY, USA
| | - Scott A Peslak
- Department of Medicine, Division of Hematology/Oncology, Hospital of the University of Pennsylvania, Philadelphia, PA, USA.,Division of Hematology, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Paul D Kingsley
- Center for Pediatric Biomedical Research, Department of Pediatrics, University of Rochester, Rochester, NY, USA
| | - Yukio Nakamura
- Cell Engineering Division, RIKEN BioResource Center, Tsukuba, Ibaraki, Japan
| | - James Palis
- Center for Pediatric Biomedical Research, Department of Pediatrics, University of Rochester, Rochester, NY, USA
| | - Michael Bulger
- Center for Pediatric Biomedical Research, Department of Pediatrics, University of Rochester, Rochester, NY, USA.
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