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Wu X, Wang Y, Chen B, Liu Y, Li F, Ou Y, Zhang H, Wu X, Li X, Wang L, Rong W, Liu J, Xing M, Zhao X, Liu H, Ge L, Lv A, Wang L, Wang Z, Li M, Zhang H. ABIN1 (Q478) is Required to Prevent Hematopoietic Deficiencies through Regulating Type I IFNs Expression. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2303555. [PMID: 38009796 PMCID: PMC10797436 DOI: 10.1002/advs.202303555] [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: 06/01/2023] [Revised: 10/12/2023] [Indexed: 11/29/2023]
Abstract
A20-binding inhibitor of NF-κB activation (ABIN1) is a polyubiquitin-binding protein that regulates cell death and immune responses. Although Abin1 is located on chromosome 5q in the region commonly deleted in patients with 5q minus syndrome, the most distinct of the myelodysplastic syndromes (MDSs), the precise role of ABIN1 in MDSs remains unknown. In this study, mice with a mutation disrupting the polyubiquitin-binding site (Abin1Q478H/Q478H ) is generated. These mice develop MDS-like diseases characterized by anemia, thrombocytopenia, and megakaryocyte dysplasia. Extramedullary hematopoiesis and bone marrow failure are also observed in Abin1Q478H/Q478H mice. Although Abin1Q478H/Q478H cells are sensitive to RIPK1 kinase-RIPK3-MLKL-dependent necroptosis, only anemia and splenomegaly are alleviated by RIPK3 deficiency but not by MLKL deficiency or the RIPK1 kinase-dead mutation. This indicates that the necroptosis-independent function of RIPK3 is critical for anemia development in Abin1Q478H/Q478H mice. Notably, Abin1Q478H/Q478H mice exhibit higher levels of type I interferon (IFN-I) expression in bone marrow cells compared towild-type mice. Consistently, blocking type I IFN signaling through the co-deletion of Ifnar1 greatly ameliorated anemia, thrombocytopenia, and splenomegaly in Abin1Q478H/Q478H mice. Together, these results demonstrates that ABIN1(Q478) prevents the development of hematopoietic deficiencies by regulating type I IFN expression.
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Affiliation(s)
- Xuanhui Wu
- CAS Key Laboratory of Nutrition, Metabolism and Food SafetyShanghai Institute of Nutrition and HealthUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai200031China
| | - Yong Wang
- CAS Key Laboratory of Nutrition, Metabolism and Food SafetyShanghai Institute of Nutrition and HealthUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai200031China
| | - Bingyi Chen
- CAS Key Laboratory of Nutrition, Metabolism and Food SafetyShanghai Institute of Nutrition and HealthUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai200031China
| | - Yongbo Liu
- CAS Key Laboratory of Nutrition, Metabolism and Food SafetyShanghai Institute of Nutrition and HealthUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai200031China
| | - Fang Li
- Department of AnesthesiologyShanghai First People's HospitalShanghai Jiaotong UniversityShanghai200080China
| | - Yangjing Ou
- CAS Key Laboratory of Nutrition, Metabolism and Food SafetyShanghai Institute of Nutrition and HealthUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai200031China
| | - Haiwei Zhang
- CAS Key Laboratory of Nutrition, Metabolism and Food SafetyShanghai Institute of Nutrition and HealthUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai200031China
| | - Xiaoxia Wu
- CAS Key Laboratory of Nutrition, Metabolism and Food SafetyShanghai Institute of Nutrition and HealthUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai200031China
| | - Xiaoming Li
- CAS Key Laboratory of Nutrition, Metabolism and Food SafetyShanghai Institute of Nutrition and HealthUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai200031China
| | - Lingxia Wang
- CAS Key Laboratory of Nutrition, Metabolism and Food SafetyShanghai Institute of Nutrition and HealthUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai200031China
| | - Wuwei Rong
- Department of CardiologyRuijin HospitalShanghai Jiaotong University School of MedicineShanghai200025China
| | - Jianling Liu
- CAS Key Laboratory of Nutrition, Metabolism and Food SafetyShanghai Institute of Nutrition and HealthUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai200031China
| | - Mingyan Xing
- CAS Key Laboratory of Nutrition, Metabolism and Food SafetyShanghai Institute of Nutrition and HealthUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai200031China
| | - Xiaoming Zhao
- CAS Key Laboratory of Nutrition, Metabolism and Food SafetyShanghai Institute of Nutrition and HealthUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai200031China
| | - Han Liu
- CAS Key Laboratory of Nutrition, Metabolism and Food SafetyShanghai Institute of Nutrition and HealthUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai200031China
| | - Lingling Ge
- Department of Plastic and Reconstructive SurgeryShanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghai200011China
| | - Ankang Lv
- Department of CardiologyRuijin HospitalShanghai Jiaotong University School of MedicineShanghai200025China
| | - Lan Wang
- CAS Key Laboratory of Nutrition, Metabolism and Food SafetyShanghai Institute of Nutrition and HealthUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai200031China
| | - Zhichao Wang
- Department of Plastic and Reconstructive SurgeryShanghai Ninth People's HospitalShanghai Jiao Tong University School of MedicineShanghai200011China
| | - Ming Li
- CAS Key Laboratory of Nutrition, Metabolism and Food SafetyShanghai Institute of Nutrition and HealthUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai200031China
| | - Haibing Zhang
- CAS Key Laboratory of Nutrition, Metabolism and Food SafetyShanghai Institute of Nutrition and HealthUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai200031China
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2
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Fernández-Aroca D, García-Flores N, Frost S, Jiménez-Suárez J, Rodríguez-González A, Fernández-Aroca P, Sabater S, Andrés I, Garnés-García C, Belandia B, Cimas F, Villar D, Ruiz-Hidalgo M, Sánchez-Prieto R. MAPK11 (p38β) is a major determinant of cellular radiosensitivity by controlling ionizing radiation-associated senescence: An in vitro study. Clin Transl Radiat Oncol 2023; 41:100649. [PMID: 37346275 PMCID: PMC10279794 DOI: 10.1016/j.ctro.2023.100649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/30/2023] [Accepted: 05/30/2023] [Indexed: 06/23/2023] Open
Abstract
Background and purpose MAPKs are among the most relevant signalling pathways involved in coordinating cell responses to different stimuli. This group includes p38MAPKs, constituted by 4 different proteins with a high sequence homology: MAPK14 (p38α), MAPK11 (p38β), MAPK12 (p38γ) and MAPK13 (p38δ). Despite their high similarity, each member shows unique expression patterns and even exclusive functions. Thus, analysing protein-specific functions of MAPK members is necessary to unequivocally uncover the roles of this signalling pathway. Here, we investigate the possible role of MAPK11 in the cell response to ionizing radiation (IR). Materials and methods We developed MAPK11/14 knockdown through shRNA and CRISPR interference gene perturbation approaches and analysed the downstream effects on cell responses to ionizing radiation in A549, HCT-116 and MCF-7 cancer cell lines. Specifically, we assessed IR toxicity by clonogenic assays; DNA damage response activity by immunocytochemistry; apoptosis and cell cycle by flow cytometry (Annexin V and propidium iodide, respectively); DNA repair by comet assay; and senescence induction by both X-Gal staining and gene expression of senescence-associated genes by RT-qPCR. Results Our findings demonstrate a critical role of MAPK11 in the cellular response to IR by controlling the associated senescent phenotype, and without observable effects on DNA damage response, apoptosis, cell cycle or DNA damage repair. Conclusion Our results highlight MAPK11 as a novel mediator of the cellular response to ionizing radiation through the control exerted onto IR-associated senescence.
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Affiliation(s)
- D.M. Fernández-Aroca
- Laboratorio de Oncología Molecular, Unidad de Medicina Molecular, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha. Unidad Asociada de Biomedicina UCLM, Unidad asociada al CSIC, Albacete, España
| | - N. García-Flores
- Laboratorio de Oncología Molecular, Unidad de Medicina Molecular, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha. Unidad Asociada de Biomedicina UCLM, Unidad asociada al CSIC, Albacete, España
| | - S. Frost
- Centre for Genomics and Child Health, Blizard Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - J. Jiménez-Suárez
- Laboratorio de Oncología Molecular, Unidad de Medicina Molecular, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha. Unidad Asociada de Biomedicina UCLM, Unidad asociada al CSIC, Albacete, España
| | - A. Rodríguez-González
- Centre for Genomics and Child Health, Blizard Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - P. Fernández-Aroca
- Laboratorio de Oncología Molecular, Unidad de Medicina Molecular, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha. Unidad Asociada de Biomedicina UCLM, Unidad asociada al CSIC, Albacete, España
| | - S. Sabater
- Servicio de Oncología Radioterápica, Complejo Hospitalario Universitario de Albacete, Albacete, España
| | - I. Andrés
- Servicio de Oncología Radioterápica, Complejo Hospitalario Universitario de Albacete, Albacete, España
| | - C. Garnés-García
- Laboratorio de Oncología Molecular, Unidad de Medicina Molecular, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha. Unidad Asociada de Biomedicina UCLM, Unidad asociada al CSIC, Albacete, España
| | - B. Belandia
- Departamento de Biología del Cáncer, Instituto de Investigaciones Biomédicas Alberto Sols (CSIC-UAM). Madrid, España. Unidad Asociada de Biomedicina UCLM, Unidad asociada al CSIC, España
| | - F.J. Cimas
- Laboratorio de Oncología Molecular, Unidad de Medicina Molecular, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha. Unidad Asociada de Biomedicina UCLM, Unidad asociada al CSIC, Albacete, España
- Área de Bioquímica y Biología Molecular, Facultad de Medicina, Universidad de Castilla-La Mancha, Albacete, España
| | - D. Villar
- Centre for Genomics and Child Health, Blizard Institute, Faculty of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - M.J. Ruiz-Hidalgo
- Laboratorio de Oncología Molecular, Unidad de Medicina Molecular, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha. Unidad Asociada de Biomedicina UCLM, Unidad asociada al CSIC, Albacete, España
- Área de Bioquímica y Biología Molecular, Facultad de Medicina, Universidad de Castilla-La Mancha, Albacete, España
| | - R. Sánchez-Prieto
- Laboratorio de Oncología Molecular, Unidad de Medicina Molecular, Centro Regional de Investigaciones Biomédicas, Universidad de Castilla-La Mancha. Unidad Asociada de Biomedicina UCLM, Unidad asociada al CSIC, Albacete, España
- Departamento de Biología del Cáncer, Instituto de Investigaciones Biomédicas Alberto Sols (CSIC-UAM). Madrid, España. Unidad Asociada de Biomedicina UCLM, Unidad asociada al CSIC, España
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3
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Zhang L, Pitcher LE, Prahalad V, Niedernhofer LJ, Robbins PD. Targeting cellular senescence with senotherapeutics: senolytics and senomorphics. FEBS J 2023; 290:1362-1383. [PMID: 35015337 DOI: 10.1111/febs.16350] [Citation(s) in RCA: 165] [Impact Index Per Article: 165.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 11/17/2021] [Accepted: 01/10/2022] [Indexed: 12/15/2022]
Abstract
The concept of geroscience is that since ageing is the greatest risk factor for many diseases and conditions, targeting the ageing process itself will have the greatest impact on human health. Of the hallmarks of ageing, cellular senescence has emerged as a druggable therapeutic target for extending healthspan in model organisms. Cellular senescence is a cell state of irreversible proliferative arrest driven by different types of stress, including oncogene-induced stress. Many senescent cells (SnCs) develop a senescent-associated secretory phenotype (SASP) comprising pro-inflammatory cytokines, chemokines, proteases, bioactive lipids, inhibitory molecules, extracellular vesicles, metabolites, lipids and other factors, able to promote chronic inflammation and tissue dysfunction. SnCs up-regulate senescent cell anti-apoptotic pathways (SCAPs) that prevent them from dying despite the accumulation of damage to DNA and other organelles. These SCAPs and other pathways altered in SnCs represent therapeutic targets for the development of senotherapeutic drugs that induce selective cell death of SnCs, specifically termed senolytics or suppress markers of senescence, in particular the SASP, termed senomorphics. Here, we review the current state of the development of senolytics and senomorphics for the treatment of age-related diseases and disorders and extension of healthy longevity. In addition, the challenges of documenting senolytic and senomorphic activity in pre-clinical models and the current state of the clinical application of the different senotherapeutics will be discussed.
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Affiliation(s)
- Lei Zhang
- Department of Biochemistry, Molecular Biology and Biophysics, Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
| | - Louise E Pitcher
- Department of Biochemistry, Molecular Biology and Biophysics, Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
| | - Vaishali Prahalad
- Department of Biochemistry, Molecular Biology and Biophysics, Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
| | - Laura J Niedernhofer
- Department of Biochemistry, Molecular Biology and Biophysics, Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
| | - Paul D Robbins
- Department of Biochemistry, Molecular Biology and Biophysics, Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
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4
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Tobi M, Bradley I, Moole S, Talwar H, McVicker B, Kintanar E, Sochacki P, Ben-Josef E. Start Early and See Inflammatory; Late, Nothing Save RAVE: How to Appreciate Radiation Proctitis as a Continuum. GASTRO HEP ADVANCES 2022; 2:362-369. [PMID: 39132647 PMCID: PMC11308657 DOI: 10.1016/j.gastha.2022.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 11/01/2022] [Indexed: 08/13/2024]
Abstract
Background and Aims It has been recently proposed to change the nomenclature of "chronic radiation proctitis" (CRP) to "radiation-associated vascular ectasia" on the basis that signs of inflammation are rarely observed. We herein present data supporting the idea that inflammation is a critical step that initiates the process that culminates in the characteristic changes of CRP. Methods In support of inflammation in the pathogenesis of CRP, we review the pertinent literature and publish our new results, including the role of amifostine treatment and proinflammatory factors (p38 MAP kinase, VEGF, and CEACAM1). Results Immunohistochemistry from anterior rectal wall biopsies obtained in a prospective pilot study demonstrates that expression of VEGF and the downstream vascular effector CEACAM1 were elevated before radiotherapy and declined with time. We also show that MAP Kinase p38 expression usually precede the radiation. Fibrosis scores increase from baseline at 9 and 18 months, while vascular scores decrease at 18 months. Conclusion The proposed new nomenclature should be held in obeyance until more supportive data are presented. Possibly, the best way to view CRP is as a continuum that may take one of three forms, inflammation-predominant, vasculopathy-predominant, or mixed.
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Affiliation(s)
- Martin Tobi
- Department of R&D, Detroit VAMC, Detroit Michigan
| | | | - Sumana Moole
- Merus Gastroenterology, and Gut Health LLC, Suwansee Georgia
| | | | - Benita McVicker
- Research Service, VA Nebraska-Western Iowa Health Care System, the University of Nebraska Medical Center, Omaha, Nebraska
| | - Esperanza Kintanar
- Department of Pathology, Ascension Michigan Providence Hospital, Rochester Michigan
| | | | - Edgar Ben-Josef
- Department of Radiation Oncology, Hospital of the University of Pennsylvania, Perelman Center for Advanced Medicine, Philadelphia, Pennsylvania
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5
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Klokov D, Applegate K, Badie C, Brede DA, Dekkers F, Karabulutoglu M, Le Y, Rutten EA, Lumniczky K, Gomolka M. International expert group collaboration for developing an adverse outcome pathway for radiation induced leukaemia. Int J Radiat Biol 2022; 98:1802-1815. [PMID: 36040845 DOI: 10.1080/09553002.2022.2117873] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
PURPOSE The concept of the adverse outcome pathway (AOP) has recently gained significant attention as to its potential for incorporation of mechanistic biological information into the assessment of adverse health outcomes following ionizing radiation (IR) exposure. This work is an account of the activities of an international expert group formed specifically to develop an AOP for IR-induced leukaemia. Group discussions were held during dedicated sessions at the international AOP workshop jointly organized by the MELODI (Multidisciplinary European Low Dose Initiative) and the ALLIANCE (European Radioecology Alliance) associations to consolidate knowledge into a number of biological key events causally linked by key event relationships and connecting a molecular initiating event with the adverse outcome. Further knowledge review to generate a weight of evidence support for the Key Event Relationships (KERs) was undertaken using a systematic review approach. CONCLUSIONS An AOP for IR-induced acute myeloid leukaemia was proposed and submitted for review to the OECD-curated AOP-wiki (aopwiki.org). The systematic review identified over 500 studies that link IR, as a stressor, to leukaemia, as an adverse outcome. Knowledge gap identification, although requiring a substantial effort via systematic review of literature, appears to be one of the major added values of the AOP concept. Further work, both within this leukaemia AOP working group and other similar working groups, is warranted and is anticipated to produce highly demanded products for the radiation protection research community.
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Affiliation(s)
- Dmitry Klokov
- Laboratory of Experimental Radiotoxicology and Radiobiology, Institute for Radiological Protection and Nuclear Safety, Fontenay-aux-Roses, France.,Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Canada
| | - Kimberly Applegate
- Department of Radiology, University of Kentucky College of Medicine (retired), Lexington, KY, USA
| | - Christophe Badie
- Cancer Mechanisms and Biomarkers group, Department of Radiation Effects, Radiation, Chemical and Environmental, UK Health Security Agency, Oxfordshire, United Kingdom
| | - Dag Anders Brede
- Centre for Environmental Radioactivity (CERAD), Faculty of Environmental Sciences and Natural Resource Management (MINA), Norwegian University of Life Sciences (NMBU), Norway
| | - Fieke Dekkers
- Mathematical Institute, Utrecht University, Utrecht, The Netherlands.,Netherlands National Institute for Public Health and the Environment, Bilthoven, The Netherlands
| | - Melis Karabulutoglu
- Cancer Mechanisms and Biomarkers group, Department of Radiation Effects, Radiation, Chemical and Environmental, UK Health Security Agency, Oxfordshire, United Kingdom
| | | | - Eric Andreas Rutten
- Cancer Mechanisms and Biomarkers group, Department of Radiation Effects, Radiation, Chemical and Environmental, UK Health Security Agency, Oxfordshire, United Kingdom
| | - Katalin Lumniczky
- Radiation Biology, Federal Office for Radiation Protection BfS, Oberschleißheim, Germany
| | - Maria Gomolka
- Unit of Radiation Medicine, Department of Radiobiology and Radiohygiene, National Public Health Centre, Budapest, Hungary
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6
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Zeng M, Zhang Y, Zhang X, Zhang W, Yu Q, Zeng W, Ma D, Gan J, Yang Z, Jiang X. Two birds with one stone: YQSSF regulates both proliferation and apoptosis of bone marrow cells to relieve chemotherapy-induced myelosuppression. JOURNAL OF ETHNOPHARMACOLOGY 2022; 289:115028. [PMID: 35077825 DOI: 10.1016/j.jep.2022.115028] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 01/09/2022] [Accepted: 01/19/2022] [Indexed: 06/14/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Yiqi Shengsui formula (YQSSF) is a commonly used formula to treat chemotherapy-induced myelosuppression, but little is known about its therapeutic mechanisms. AIM OF THIS STUDY This study aims to examine the effect of YQSSF in treating myelosuppression and explore its mechanism. MATERIALS AND METHODS A myelosuppression BALB/c mouse model was established by intraperitoneal (i.p.) injection of cyclophosphamide (CTX). The efficacy of YQSSF in alleviating chemotherapy-induced myelosuppression was evaluated by blood cell count, immune organ (thymus, spleen, liver) index, bone marrow nucleated cell (BMNC) count and histopathological analysis of bone marrow and spleen. Then, ultra-performance liquid chromatograph quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF/MS) was performed to analyze the ingredients of YQSSF extract. Key effects and potential mechanism of YQSSF extract in alleviating myelosuppression were predicted by network pharmacology method. Finally, cell cycle and TUNEL staining of bone marrow cells was detected to verify the key effects, and RT-qPCR or Western blotting were performed to measure the gene and protein expressions of the effect targets respectively to confirm the predicted mechanism of YQSSF for myelosuppression. RESULTS YQSSF up-regulated the number of peripheral blood leukocytes and BMNC, reduced spleen index and liver index, improved the pathological morphology of bone marrow and spleen. A total of 40 ingredients were isolated from YQSSF extract using UPLC-Q/TOF-MS analysis. Network pharmacology revealed that YQSSF regulated both proliferation and apoptosis to alleviate myelosuppression. Finally, YQSSF decreased G0/G1 ratio, increased the proportion of bone marrow cells in S phase and proliferation index (PI), and reduced apoptotic cells in femur bone marrow. RT-qPCR and Western blotting showed that YQSSF up-regulated the expression levels of CDK4, CDK6, CyclinB1, c-Myc and Bcl-2, as well as down-regulated the expression levels of Cyt-c, Fas, Caspase-8/3 and p53. CONCLUSIONS YQSSF promotes the proliferation and inhibits the apoptosis of bone marrow cells to relieve chemotherapy-induced myelosuppression.
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Affiliation(s)
- Miao Zeng
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Yue Zhang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Xiaolu Zhang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Wenlan Zhang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Qun Yu
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Wenyun Zeng
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Dongming Ma
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Jiali Gan
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Zhen Yang
- School of Traditional Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Xijuan Jiang
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
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Ripk3 signaling regulates HSCs during stress and represses radiation-induced leukemia in mice. Stem Cell Reports 2022; 17:1428-1441. [PMID: 35561683 PMCID: PMC9213819 DOI: 10.1016/j.stemcr.2022.04.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 04/14/2022] [Accepted: 04/14/2022] [Indexed: 01/03/2023] Open
Abstract
Receptor-interacting protein kinase 3 (Ripk3) is one of the critical mediators of inflammatory cytokine-stimulated signaling. Here we show that Ripk3 signaling selectively regulates both the number and the function of hematopoietic stem cells (HSCs) during stress conditions. Ripk3 signaling is not required for normal homeostatic hematopoiesis. However, in response to serial transplantation, inactivation of Ripk3 signaling prevents stress-induced HSC exhaustion and functional HSC attenuation, while in response to fractionated low doses of ionizing radiation (IR), inactivation of Ripk3 signaling accelerates leukemia/lymphoma development. In both situations, Ripk3 signaling is primarily stimulated by tumor necrosis factor-α. Activated Ripk3 signaling promotes the elimination of HSCs during serial transplantation and pre-leukemia stem cells (pre-LSCs) during fractionated IR by inducing Mlkl-dependent necroptosis. Activated Ripk3 signaling also attenuates HSC functioning and represses a pre-LSC-to-LSC transformation by promoting Mlkl-independent senescence. Furthermore, we demonstrate that Ripk3 signaling induces senescence in HSCs and pre-LSCs by attenuating ISR-mediated mitochondrial quality control. Ripk3-Mlkl signaling is not required for normal homeostatic hematopoiesis Ripk3-Mlkl signaling promotes HSC loss during serial transplantation or low-dose IR Tnf-α-Ripk3 signaling prevents leukemia development after exposure to low-dose IR Ripk3 represses pre-LSCs by inducing Mlkl necroptosis and PDC-OXPHOS-ROS senescence
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8
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Tobi M, Sochacki P, Ben-Josef E. The "Itis" in Chronic Radiation Proctitis Is Alrightis but RAVE Is Too Superficial a Shave. Gastroenterology 2022; 162:991. [PMID: 34736963 DOI: 10.1053/j.gastro.2021.10.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 10/28/2021] [Indexed: 12/02/2022]
Affiliation(s)
- Martin Tobi
- Department of Research and Development, Detroit VAMC, Detroit, Michigan
| | - Paula Sochacki
- Department of Pathology, Wayne State University, Detroit, Michigan
| | - Edgar Ben-Josef
- Department of Radiation Oncology, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
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9
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Zhou X, Wang H, Li D, Song N, Yang F, Xu W. MST1/2 inhibitor XMU-MP-1 alleviates the injury induced by ionizing radiation in haematopoietic and intestinal system. J Cell Mol Med 2022; 26:1621-1628. [PMID: 35088536 PMCID: PMC8899195 DOI: 10.1111/jcmm.17203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 12/22/2021] [Accepted: 01/10/2022] [Indexed: 02/02/2023] Open
Abstract
The Hippo signalling pathway has been considered as potential therapeutic target in self‐renewal and differentiation of stem and progenitor cells. Thus, mammalian Ste20‐like kinase 1/2 (MST1/2) as the core serine‐threonine kinases in the Hippo signalling pathway has been investigated for its role in immunological disease. However, little information of MST1/2 function in bone marrow suppression induced by ionizing radiation was fully investigated. Here, we reported that MST1/2 inhibitor XMU‐MP‐1 could rescue the impaired haematopoietic stem cells (HSCs) and progenitor cells (HPCs) function under oxidative stress condition. Also, XMU‐MP‐1 pretreatment markedly alleviated the small intestinal system injury caused by the total body irradiation 9 Gy and extended the average survival days of the mice exposed to the lethal dose radiation. Therefore, irradiation exposure causes the serious pathological changes of haematopoietic and intestinal system, and XMU‐MP‐1 could prevent the ROS production, the haematopoietic cells impairment and the intestinal injury. These detrimental effects may be associated with regulating NOX/ROS/P38MARK pathway by MST1/2.
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Affiliation(s)
- Xiaoliang Zhou
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, China
| | - Hao Wang
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
| | - Deguan Li
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, China
| | - Naling Song
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, China
| | - Fujun Yang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, China
| | - Wenqing Xu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, China
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10
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Budgude P, Kale V, Vaidya A. Pharmacological Inhibition of p38 MAPK Rejuvenates Bone Marrow Derived-Mesenchymal Stromal Cells and Boosts their Hematopoietic Stem Cell-Supportive Ability. Stem Cell Rev Rep 2021; 17:2210-2222. [PMID: 34420158 DOI: 10.1007/s12015-021-10240-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/09/2021] [Indexed: 01/12/2023]
Abstract
The therapeutic value of mesenchymal stromal cells (MSCs) for various regenerative medicine applications, including hematopoietic stem cell transplantations (HSCT), has been well-established. Owing to their small numbers in vivo, it becomes necessary to expand them in vitro, which leads to a gradual loss of their regenerative capacity. Stress-induced mitogen-activated protein kinase p38 (p38 MAPK) signaling has been shown to compromise the MSC functions. Therefore, we investigated whether pharmacological inhibition of p38 MAPK signaling rejuvenates the cultured MSCs and boosts their functionality. Indeed, we found that the ex vivo expanded MSCs show activated p38 MAPK signaling and exhibit increased oxidative stress. These MSCs show a decreased ability to secrete salutary niche factors, thereby compromising their ability to support hematopoietic stem cell (HSC) self-renewal, proliferation, and differentiation. We, therefore, attempted to rejuvenate the cultured MSCs by pharmacological inhibition of p38 MAPK - a strategy broadly known as "priming of MSCs". We demonstrate that priming of MSCs with a p-38 MAPK inhibitor, PD169316, boosts their niche-supportive functions via upregulation of various HSC-supportive transcription factors. These primed MSCs expand multipotent HSCs having superior homing and long-term reconstitution ability. These findings shed light on the significance of non-cell-autonomous mechanisms operative in the hematopoietic niche and point towards the possible use of pharmacological compounds for rejuvenation of ex vivo cultured MSCs. Such approaches could improve the outcome of regenerative therapies involving in vitro cultured MSCs.
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Affiliation(s)
- Pallavi Budgude
- Symbiosis Centre for Stem Cell Research, Symbiosis International (Deemed University), Gram: Lavale, Taluka: Mulshi, Pune, 412115, India.,Symbiosis School of Biological Sciences, Symbiosis International (Deemed University), Gram: Lavale, Taluka: Mulshi, Pune, 412115, India
| | - Vaijayanti Kale
- Symbiosis Centre for Stem Cell Research, Symbiosis International (Deemed University), Gram: Lavale, Taluka: Mulshi, Pune, 412115, India
| | - Anuradha Vaidya
- Symbiosis Centre for Stem Cell Research, Symbiosis International (Deemed University), Gram: Lavale, Taluka: Mulshi, Pune, 412115, India. .,Symbiosis School of Biological Sciences, Symbiosis International (Deemed University), Gram: Lavale, Taluka: Mulshi, Pune, 412115, India.
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11
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Gopalakrishnan V, Sharma S, Ray U, Manjunath M, Lakshmanan D, Vartak SV, Gopinatha VK, Srivastava M, Kempegowda M, Choudhary B, Raghavan SC. SCR7, an inhibitor of NHEJ can sensitize tumor cells to ionization radiation. Mol Carcinog 2021; 60:627-643. [PMID: 34192388 DOI: 10.1002/mc.23329] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 06/01/2021] [Accepted: 06/07/2021] [Indexed: 12/30/2022]
Abstract
Nonhomologous end joining (NHEJ), one of the major DNA double-strand break repair pathways, plays a significant role in cancer cell proliferation and resistance to radio and chemotherapeutic agents. Previously, we had described a small molecule inhibitor, SCR7, which inhibited NHEJ in a DNA Ligase IV dependent manner. Here, we report that SCR7 potentiates the effect of γ-radiation (IR) that induces DNA breaks as intermediates to eradicate cancer cells. Dose fractionation studies revealed that coadministration of SCR7 and IR (0.5 Gy) in mice Dalton's lymphoma (DLA) model led to a significant reduction in mice tumor cell proliferation, which was equivalent to that observed for 2 Gy dose when both solid and liquid tumor models were used. Besides, co-treatment with SCR7 and 1 Gy of IR further improved the efficacy. Notably, there was no significant change in blood parameters, kidney and liver functions upon combinatorial treatment of SCR7 and IR. Further, the co-treatment of SCR7 and IR resulted in a significant increase in unrepaired DSBs within cancer cells compared to either of the agent alone. Anatomy, histology, and other studies in tumor models confirmed the cumulative effects of both agents in activating apoptotic pathways to induce cytotoxicity by modulating DNA damage response and repair pathways. Thus, we report that SCR7 has the potential to reduce the side effects of radiotherapy by lowering its effective dose ex vivo and in mice tumor models, with implications in cancer therapy.
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Affiliation(s)
- Vidya Gopalakrishnan
- Department of Biochemistry, Indian Institute of Science, Bangalore, Karnataka, India.,Institute of Bioinformatics and Applied Biotechnology, Electronics City, Bangalore, Karnataka, India.,Department of Zoology, St. Joseph's College (Autonomous), Irinjalakuda, Kerala, India
| | - Shivangi Sharma
- Department of Biochemistry, Indian Institute of Science, Bangalore, Karnataka, India.,Institute of Bioinformatics and Applied Biotechnology, Electronics City, Bangalore, Karnataka, India
| | - Ujjayinee Ray
- Department of Biochemistry, Indian Institute of Science, Bangalore, Karnataka, India
| | - Meghana Manjunath
- Institute of Bioinformatics and Applied Biotechnology, Electronics City, Bangalore, Karnataka, India.,Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Divya Lakshmanan
- Department of Biochemistry, Indian Institute of Science, Bangalore, Karnataka, India
| | - Supriya V Vartak
- Department of Biochemistry, Indian Institute of Science, Bangalore, Karnataka, India
| | - Vindya K Gopinatha
- Department of Biochemistry, Indian Institute of Science, Bangalore, Karnataka, India
| | - Mrinal Srivastava
- Department of Biochemistry, Indian Institute of Science, Bangalore, Karnataka, India.,Tata Institute of Fundamental Research, Hyderabad, Telangana, India
| | | | - Bibha Choudhary
- Institute of Bioinformatics and Applied Biotechnology, Electronics City, Bangalore, Karnataka, India
| | - Sathees C Raghavan
- Department of Biochemistry, Indian Institute of Science, Bangalore, Karnataka, India
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12
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Nanduri LSY, Duddempudi PK, Yang WL, Tamarat R, Guha C. Extracellular Vesicles for the Treatment of Radiation Injuries. Front Pharmacol 2021; 12:662437. [PMID: 34084138 PMCID: PMC8167064 DOI: 10.3389/fphar.2021.662437] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 05/04/2021] [Indexed: 01/02/2023] Open
Abstract
Normal tissue injury from accidental or therapeutic exposure to high-dose radiation can cause severe acute and delayed toxicities, which result in mortality and chronic morbidity. Exposure to single high-dose radiation leads to a multi-organ failure, known as acute radiation syndrome, which is caused by radiation-induced oxidative stress and DNA damage to tissue stem cells. The radiation exposure results in acute cell loss, cell cycle arrest, senescence, and early damage to bone marrow and intestine with high mortality from sepsis. There is an urgent need for developing medical countermeasures against radiation injury for normal tissue toxicity. In this review, we discuss the potential of applying secretory extracellular vesicles derived from mesenchymal stromal/stem cells, endothelial cells, and macrophages for promoting repair and regeneration of organs after radiation injury.
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Affiliation(s)
- Lalitha Sarad Yamini Nanduri
- Department of Radiation Oncology, Albert Einstein College of Medicine, Montefiore Medical Center, New York, NY, United States
| | - Phaneendra K. Duddempudi
- Department of Biochemistry, Albert Einstein College of Medicine, Montefiore Medical Center, New York, NY, United States
| | - Weng-Lang Yang
- Department of Radiation Oncology, Albert Einstein College of Medicine, Montefiore Medical Center, New York, NY, United States
| | - Radia Tamarat
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Fontenay-aux-Roses, France
| | - Chandan Guha
- Department of Radiation Oncology, Albert Einstein College of Medicine, Montefiore Medical Center, New York, NY, United States
- Department of Pathology, Albert Einstein College of Medicine, Montefiore Medical Center, New York, NY, United States
- Department of Urology, Albert Einstein College of Medicine, Montefiore Medical Center, New York, NY, United States
- Institute for Onco-Physics, Albert Einstein College of Medicine, Montefiore Medical Center, New York, NY, United States
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13
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Sorimachi Y, Karigane D, Ootomo Y, Kobayashi H, Morikawa T, Otsu K, Kubota Y, Okamoto S, Goda N, Takubo K. p38α plays differential roles in hematopoietic stem cell activity dependent on aging contexts. J Biol Chem 2021; 296:100563. [PMID: 33745970 PMCID: PMC8065231 DOI: 10.1016/j.jbc.2021.100563] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 03/04/2021] [Accepted: 03/17/2021] [Indexed: 12/12/2022] Open
Abstract
Hematopoietic stem cells (HSCs) and their progeny sustain lifetime hematopoiesis. Aging alters HSC function, number, and composition and increases risk of hematological malignancies, but how these changes occur in HSCs remains unclear. Signaling via p38 mitogen-activated kinase (p38MAPK) has been proposed as a candidate mechanism underlying induction of HSC aging. Here, using genetic models of both chronological and premature aging, we describe a multimodal role for p38α, the major p38MAPK isozyme in hematopoiesis, in HSC aging. We report that p38α regulates differentiation bias and sustains transplantation capacity of HSCs in the early phase of chronological aging. However, p38α decreased HSC transplantation capacity in the late progression phase of chronological aging. Furthermore, codeletion of p38α in mice deficient in ataxia–telangiectasia mutated, a model of premature aging, exacerbated aging-related HSC phenotypes seen in ataxia–telangiectasia mutated single-mutant mice. Overall, these studies provide new insight into multiple functions of p38MAPK, which both promotes and suppresses HSC aging context dependently.
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Affiliation(s)
- Yuriko Sorimachi
- Department of Stem Cell Biology, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan; Department of Life Sciences and Medical BioScience, Waseda University School of Advanced Science and Engineering, Tokyo, Japan
| | - Daiki Karigane
- Department of Stem Cell Biology, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan; Division of Hematology, Department of Medicine, Keio University School of Medicine, Tokyo, Japan.
| | - Yukako Ootomo
- Department of Stem Cell Biology, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan; Department of Life Sciences and Medical BioScience, Waseda University School of Advanced Science and Engineering, Tokyo, Japan
| | - Hiroshi Kobayashi
- Department of Stem Cell Biology, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan
| | - Takayuki Morikawa
- Department of Stem Cell Biology, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan
| | - Kinya Otsu
- School of Cardiovascular Medicine and Sciences, King's College London, London, United Kingdom
| | - Yoshiaki Kubota
- Department of Anatomy, Keio University School of Medicine, Tokyo, Japan
| | - Shinichiro Okamoto
- Division of Hematology, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Nobuhito Goda
- Department of Life Sciences and Medical BioScience, Waseda University School of Advanced Science and Engineering, Tokyo, Japan
| | - Keiyo Takubo
- Department of Stem Cell Biology, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan.
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14
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Xie J, Zhao M, Wang C, Yong Y, Gu Z, Zhao Y. Rational Design of Nanomaterials for Various Radiation-Induced Diseases Prevention and Treatment. Adv Healthc Mater 2021; 10:e2001615. [PMID: 33506624 DOI: 10.1002/adhm.202001615] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 11/05/2020] [Indexed: 12/17/2022]
Abstract
Radiation treatments often unfavorably damage neighboring healthy organs and cause a series of radiation sequelae, such as radiation-induced hematopoietic system diseases, radiation-induced gastrointestinal diseases, radiation-induced lung diseases, and radiation-induced skin diseases. Recently, emerging nanomaterials have exhibited good superiority for these radiation-induced disease treatments. Given this background, the rational design principle of nanomaterials, which helps to optimize the therapeutic efficiency, has been an increasing need. Consequently, it is of great significance to perform a systematic summarization of the advances in this field, which can trigger the development of new high-performance nanoradioprotectors with drug efficiency maximization. Herein, this review highlights the advances and perspectives in the rational design of nanomaterials for preventing and treating various common radiation-induced diseases. Furthermore, the sources, clinical symptoms, and pathogenesis/injury mechanisms of these radiation-induced diseases will also be introduced. Furthermore, current challenges and directions for future efforts in this field are also discussed.
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Affiliation(s)
- Jiani Xie
- School of Food and Biological Engineering Chengdu University Chengdu 610106 China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China
| | - Maoru Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China
- Center of Materials Science and Optoelectronics Engineering College of Materials Science and Optoelectronic Technology University of Chinese Academy of Sciences Beijing 100049 China
| | - Chengyan Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China
- Center of Materials Science and Optoelectronics Engineering College of Materials Science and Optoelectronic Technology University of Chinese Academy of Sciences Beijing 100049 China
| | - Yuan Yong
- College of Chemistry and Environment Protection Engineering Southwest Minzu University Chengdu 610041 China
| | - Zhanjun Gu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China
- Center of Materials Science and Optoelectronics Engineering College of Materials Science and Optoelectronic Technology University of Chinese Academy of Sciences Beijing 100049 China
- GBA Research Innovation Institute for Nanotechnology Guangdong 510700 China
| | - Yuliang Zhao
- Center of Materials Science and Optoelectronics Engineering College of Materials Science and Optoelectronic Technology University of Chinese Academy of Sciences Beijing 100049 China
- GBA Research Innovation Institute for Nanotechnology Guangdong 510700 China
- CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology of China Chinese Academy of Sciences Beijing 100190 China
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15
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Liao Y, Wang D, Gu Z. Research Progress of Nanomaterials for Radioprotection. ACTA CHIMICA SINICA 2021. [DOI: 10.6023/a21070319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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16
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Khodamoradi E, Hoseini-Ghahfarokhi M, Amini P, Motevaseli E, Shabeeb D, Musa AE, Najafi M, Farhood B. Targets for protection and mitigation of radiation injury. Cell Mol Life Sci 2020; 77:3129-3159. [PMID: 32072238 PMCID: PMC11104832 DOI: 10.1007/s00018-020-03479-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 02/04/2020] [Accepted: 02/07/2020] [Indexed: 02/06/2023]
Abstract
Protection of normal tissues against toxic effects of ionizing radiation is a critical issue in clinical and environmental radiobiology. Investigations in recent decades have suggested potential targets that are involved in the protection against radiation-induced damages to normal tissues and can be proposed for mitigation of radiation injury. Emerging evidences have been shown to be in contrast to an old dogma in radiation biology; a major amount of reactive oxygen species (ROS) production and cell toxicity occur during some hours to years after exposure to ionizing radiation. This can be attributed to upregulation of inflammatory and fibrosis mediators, epigenetic changes and disruption of the normal metabolism of oxygen. In the current review, we explain the cellular and molecular changes following exposure of normal tissues to ionizing radiation. Furthermore, we review potential targets that can be proposed for protection and mitigation of radiation toxicity.
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Affiliation(s)
- Ehsan Khodamoradi
- Radiology and Nuclear Medicine Department, School of Paramedical Sciences, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mojtaba Hoseini-Ghahfarokhi
- Radiology and Nuclear Medicine Department, School of Paramedical Sciences, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Peyman Amini
- Department of Radiology, Faculty of Paramedical, Tehran University of Medical Sciences, Tehran, Iran
| | - Elahe Motevaseli
- Department of Molecular Medicine, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Dheyauldeen Shabeeb
- Department of Physiology, College of Medicine, University of Misan, Misan, Iraq
- Misan Radiotherapy Center, Misan, Iraq
| | - Ahmed Eleojo Musa
- Department of Medical Physics, Tehran University of Medical Sciences (International Campus), Tehran, Iran
| | - Masoud Najafi
- Radiology and Nuclear Medicine Department, School of Paramedical Sciences, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Bagher Farhood
- Department of Medical Physics and Radiology, Faculty of Paramedical Sciences, Kashan University of Medical Sciences, Kashan, Iran.
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17
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Li X, Ma X, Chen Y, Peng D, Wang H, Chen S, Xiao Y, Li L, Zhou H, Cheng F, Gao Y, Chang J, Cheng T, Liu L. Coinhibition of activated p38 MAPKα and mTORC1 potentiates stemness maintenance of HSCs from SR1-expanded human cord blood CD34 + cells via inhibition of senescence. Stem Cells Transl Med 2020; 9:1604-1616. [PMID: 32602209 PMCID: PMC7695631 DOI: 10.1002/sctm.20-0129] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 05/29/2020] [Accepted: 06/03/2020] [Indexed: 01/10/2023] Open
Abstract
The stemness of ex vivo expanded hematopoietic stem cells (HSCs) is usually compromised by current methods. To explore the failure mechanism of stemness maintenance of human HSCs, which were expanded from human umbilical cord blood (hUCB) CD34+ cells, by differentiation inhibitor Stem Regenin 1 (SR1), an antagonist of aryl hydrocarbon receptor, we investigated the activity of p38 mitogen‐activated protein kinase α (p38 MAPKα, p38α) and mammalian target of rapamycin complex 1 (mTORC1), and their effect on SR1‐expanded hUCB CD34+ cells. Our results showed that cellular senescence occurred in the SR1‐expanded hUCB CD34+ cells in which p38α and mTORC1 were successively activated. Furthermore, their coinhibition resulted in a further decrease in hUCB CD34+ cell senescence without an effect on apoptosis, promoted the maintenance of expanded phenotypic HSCs without differentiation inhibition, increased the hematopoietic reconstitution ability of multiple lineages, and potentiated the long‐term self‐renewal capability of HSCs from SR1‐expanded hUCB CD34+ cells in NOD/Shi‐scid/IL‐2Rγnull mice. Our mechanistic study revealed that senescence inhibition by our strategy was mainly attributed to downregulation of the splicesome, proteasome formation, and pyrimidine metabolism signaling pathways. These results suggest that coinhibition of activated p38α and mTORC1 potentiates stemness maintenance of HSCs from SR1‐expanded hUCB CD34+ cells via senescence inhibition. Thus, we established a new strategy to maintain the stemness of ex vivo differentiation inhibitor‐expanded human HSCs via coinhibition of multiple independent senescence initiating signal pathways. This senescence inhibition‐induced stemness maintenance of ex vivo expanded HSCs could also have an important role in other HSC expansion systems.
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Affiliation(s)
- Xiaoyi Li
- Center for Translational Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Xiao Ma
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Ying Chen
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Danyue Peng
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Huifang Wang
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Suhua Chen
- Department of Gynaecology and Obstetrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Yin Xiao
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Lei Li
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Hao Zhou
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Fanjun Cheng
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Yingdai Gao
- State Key Laboratory of Experimental Hematology, Institute of Hematology, Chinese Academy of Medical Science, Tianjin, People's Republic of China
| | - Jiwei Chang
- Frontier Science Center for Immunology and Metabolism, Medical Research Institute, Wuhan University, Wuhan, People's Republic of China
| | - Tao Cheng
- State Key Laboratory of Experimental Hematology, Institute of Hematology, Chinese Academy of Medical Science, Tianjin, People's Republic of China
| | - Lingbo Liu
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
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18
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Chronic activation of endothelial MAPK disrupts hematopoiesis via NFKB dependent inflammatory stress reversible by SCGF. Nat Commun 2020; 11:666. [PMID: 32015345 PMCID: PMC6997369 DOI: 10.1038/s41467-020-14478-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 01/13/2020] [Indexed: 02/08/2023] Open
Abstract
Inflammatory signals arising from the microenvironment have emerged as critical regulators of hematopoietic stem cell (HSC) function during diverse processes including embryonic development, infectious diseases, and myelosuppressive injuries caused by irradiation and chemotherapy. However, the contributions of cellular subsets within the microenvironment that elicit niche-driven inflammation remain poorly understood. Here, we identify endothelial cells as a crucial component in driving bone marrow (BM) inflammation and HSC dysfunction observed following myelosuppression. We demonstrate that sustained activation of endothelial MAPK causes NF-κB-dependent inflammatory stress response within the BM, leading to significant HSC dysfunction including loss of engraftment ability and a myeloid-biased output. These phenotypes are resolved upon inhibition of endothelial NF-κB signaling. We identify SCGF as a niche-derived factor that suppresses BM inflammation and enhances hematopoietic recovery following myelosuppression. Our findings demonstrate that chronic endothelial inflammation adversely impacts niche activity and HSC function which is reversible upon suppression of inflammation.
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19
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Ewendt F, Föller M. p38MAPK controls fibroblast growth factor 23 (FGF23) synthesis in UMR106-osteoblast-like cells and in IDG-SW3 osteocytes. J Endocrinol Invest 2019; 42:1477-1483. [PMID: 31201665 DOI: 10.1007/s40618-019-01073-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 06/10/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND p38 mitogen-activated protein kinase (p38MAPK) is a serine/threonine kinase activated by cellular stress stimuli including radiation, osmotic shock, and inflammation and influencing apoptosis, cell proliferation, and autophagy. Moreover, p38MAPK induces transcriptional activity of the transcription factor complex NFκB mediating multiple pro-inflammatory cellular responses. Fibroblast growth factor 23 (FGF23) is produced by bone cells, and regulates renal phosphate and vitamin D metabolism as a hormone. FGF23 expression is enhanced by NFκB. Here, we analyzed the relevance of p38MAPK activity for the production of FGF23. METHODS Fgf23 expression was analyzed by qRT-PCR and FGF23 protein by ELISA in UMR106 osteoblast-like cells and in IDG-SW3 osteocytes. RESULTS Inhibition of p38MAPK with SB203580 or SB202190 significantly down-regulated Fgf23 expression and FGF23 protein expression. Conversely, p38MAPK activator anisomycin increased the abundance of Fgf23 mRNA. NFκB inhibitors wogonin and withaferin A abrogated the stimulatory effect of anisomycin on Fgf23 gene expression. CONCLUSION p38MAPK induces FGF23 formation, an effect at least in part dependent on NFκB activity.
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Affiliation(s)
- F Ewendt
- Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, 06120, Halle (Saale), Germany
| | - M Föller
- Institute of Physiology, University of Hohenheim, Garbenstraße 30, 70599, Stuttgart, Germany.
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20
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Henry E, Souissi-Sahraoui I, Deynoux M, Lefèvre A, Barroca V, Campalans A, Ménard V, Calvo J, Pflumio F, Arcangeli ML. Human hematopoietic stem/progenitor cells display reactive oxygen species-dependent long-term hematopoietic defects after exposure to low doses of ionizing radiations. Haematologica 2019; 105:2044-2055. [PMID: 31780635 PMCID: PMC7395291 DOI: 10.3324/haematol.2019.226936] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 11/27/2019] [Indexed: 01/16/2023] Open
Abstract
Hematopoietic stem cells are responsible for life-long blood cell production and are highly sensitive to exogenous stresses. The effects of low doses of ionizing radiations on radiosensitive tissues such as the hematopoietic tissue are still unknown despite their increasing use in medical imaging. Here, we study the consequences of low doses of ionizing radiations on differentiation and self-renewal capacities of human primary hematopoietic stem/progenitor cells (HSPC). We found that a single 20 mGy dose impairs the hematopoietic reconstitution potential of human HSPC but not their differentiation properties. In contrast to high irradiation doses, low doses of irradiation do not induce DNA double strand breaks in HSPC but, similar to high doses, induce a rapid and transient increase of reactive oxygen species (ROS) that promotes activation of the p38MAPK pathway. HSPC treatment with ROS scavengers or p38MAPK inhibitor prior exposure to 20 mGy irradiation abolishes the 20 mGy-induced defects indicating that ROS and p38MAPK pathways are transducers of low doses of radiation effects. Taken together, these results show that a 20 mGy dose of ionizing radiation reduces the reconstitution potential of HSPC suggesting an effect on the self-renewal potential of human hematopoietic stem cells and pinpointing ROS or the p38MAPK as therapeutic targets. Inhibition of ROS or the p38MAPK pathway protects human primary HSPC from low-dose irradiation toxicity.
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Affiliation(s)
- Elia Henry
- INSERM, U1274, Laboratory "Niche, Cancer and Hematopoiesis".,CEA, DRF-JACOB-IRCM-SCSR-LSHL, UMR "Genetic stability, Stem Cells and Radiation".,UMR "Genetic stability, Stem Cells and Radiation" Université de Paris.,UMR "Genetic stability, Stem Cells and Radiation", Université Paris-Saclay
| | - Inès Souissi-Sahraoui
- INSERM, U1274, Laboratory "Niche, Cancer and Hematopoiesis".,CEA, DRF-JACOB-IRCM-SCSR-LSHL, UMR "Genetic stability, Stem Cells and Radiation".,UMR "Genetic stability, Stem Cells and Radiation" Université de Paris.,UMR "Genetic stability, Stem Cells and Radiation", Université Paris-Saclay
| | - Margaux Deynoux
- INSERM, U1274, Laboratory "Niche, Cancer and Hematopoiesis".,CEA, DRF-JACOB-IRCM-SCSR-LSHL, UMR "Genetic stability, Stem Cells and Radiation".,UMR "Genetic stability, Stem Cells and Radiation" Université de Paris.,UMR "Genetic stability, Stem Cells and Radiation", Université Paris-Saclay
| | - Andréas Lefèvre
- INSERM, U1274, Laboratory "Niche, Cancer and Hematopoiesis".,CEA, DRF-JACOB-IRCM-SCSR-LSHL, UMR "Genetic stability, Stem Cells and Radiation".,UMR "Genetic stability, Stem Cells and Radiation" Université de Paris.,UMR "Genetic stability, Stem Cells and Radiation", Université Paris-Saclay
| | - Vilma Barroca
- INSERM, U1274, Laboratory "Niche, Cancer and Hematopoiesis".,CEA, DRF-JACOB-IRCM-SCSR-LSHL, UMR "Genetic stability, Stem Cells and Radiation".,UMR "Genetic stability, Stem Cells and Radiation" Université de Paris.,UMR "Genetic stability, Stem Cells and Radiation", Université Paris-Saclay
| | - Anna Campalans
- UMR "Genetic stability, Stem Cells and Radiation" Université de Paris.,UMR "Genetic stability, Stem Cells and Radiation", Université Paris-Saclay.,CEA, DRF-JACOB-IRCM-SIGRR-LRIG, UMR "Genetic stability, Stem Cells and Radiation"
| | - Véronique Ménard
- UMR "Genetic stability, Stem Cells and Radiation" Université de Paris.,UMR "Genetic stability, Stem Cells and Radiation", Université Paris-Saclay.,UMR "Genetic stability, Stem Cells and Radiation", F-92265 Fontenay-aux-Roses, France
| | - Julien Calvo
- INSERM, U1274, Laboratory "Niche, Cancer and Hematopoiesis".,CEA, DRF-JACOB-IRCM-SCSR-LSHL, UMR "Genetic stability, Stem Cells and Radiation".,UMR "Genetic stability, Stem Cells and Radiation" Université de Paris.,UMR "Genetic stability, Stem Cells and Radiation", Université Paris-Saclay
| | - Françoise Pflumio
- INSERM, U1274, Laboratory "Niche, Cancer and Hematopoiesis".,CEA, DRF-JACOB-IRCM-SCSR-LSHL, UMR "Genetic stability, Stem Cells and Radiation".,UMR "Genetic stability, Stem Cells and Radiation" Université de Paris.,UMR "Genetic stability, Stem Cells and Radiation", Université Paris-Saclay
| | - Marie-Laure Arcangeli
- INSERM, U1274, Laboratory "Niche, Cancer and Hematopoiesis" .,CEA, DRF-JACOB-IRCM-SCSR-LSHL, UMR "Genetic stability, Stem Cells and Radiation".,UMR "Genetic stability, Stem Cells and Radiation" Université de Paris.,UMR "Genetic stability, Stem Cells and Radiation", Université Paris-Saclay
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Derakhshani M, Abbaszadeh H, Movassaghpour AA, Mehdizadeh A, Ebrahimi-Warkiani M, Yousefi M. Strategies for elevating hematopoietic stem cells expansion and engraftment capacity. Life Sci 2019; 232:116598. [PMID: 31247209 DOI: 10.1016/j.lfs.2019.116598] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 06/22/2019] [Accepted: 06/23/2019] [Indexed: 02/07/2023]
Abstract
Hematopoietic stem cells (HSCs) are a rare cell population in adult bone marrow, mobilized peripheral blood, and umbilical cord blood possessing self-renewal and differentiation capability into a full spectrum of blood cells. Bone marrow HSC transplantation has been considered as an ideal option for certain disorders treatment including hematologic diseases, leukemia, immunodeficiency, bone marrow failure syndrome, genetic defects such as thalassemia, sickle cell anemia, autoimmune disease, and certain solid cancers. Ex vivo proliferation of these cells prior to transplantation has been proposed as a potential solution against limited number of stem cells. In such culture process, MSCs have also been shown to exhibit high capacity for secretion of soluble mediators contributing to the principle biological and therapeutic activities of HSCs. In addition, endothelial cells have been introduced to bridge the blood and sub tissues in the bone marrow, as well as, HSCs regeneration induction and survival. Cell culture in the laboratory environment requires cell growth strict control to protect against contamination, symmetrical cell division and optimal conditions for maximum yield. In this regard, microfluidic systems provide culture and analysis capabilities in micro volume scales. Moreover, two-dimensional cultures cannot fully demonstrate extracellular matrix found in different tissues and organs as an abstract representation of three dimensional cell structure. Microfluidic systems can also strongly describe the effects of physical factors such as temperature and pressure on cell behavior.
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Affiliation(s)
- Mehdi Derakhshani
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hossein Abbaszadeh
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Akbar Movassaghpour
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amir Mehdizadeh
- Endocrine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Majid Ebrahimi-Warkiani
- School of Biomedical Engineering, University Technology of Sydney, Sydney, New South Wales, 2007, Australia
| | - Mehdi Yousefi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
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22
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Bartolini D, Wang Y, Zhang J, Giustarini D, Rossi R, Wang GY, Torquato P, Townsend DM, Tew KD, Galli F. A seleno-hormetine protects bone marrow hematopoietic cells against ionizing radiation-induced toxicities. PLoS One 2019; 14:e0205626. [PMID: 31034521 PMCID: PMC6488049 DOI: 10.1371/journal.pone.0205626] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 03/28/2019] [Indexed: 01/05/2023] Open
Abstract
2,2'-diselenyldibenzoic acid (DSBA) is a chemical probe produced to explore the pharmacological properties of diphenyldiselenide-derived agents with seleno-hormetic activity undergoing preclinical development. The present study was designed to verify in vivo the drug's properties and to determine mechanistically how these may mediate the protection of tissues against stress conditions, exemplified by ionizing radiation induced damage in mouse bone marrow. In murine bone marrow hematopoietic cells, the drug initiated the activation of the Nrf2 transcription factor resulting in enhanced expression of downstream stress response genes. This type of response was confirmed in human liver cells and included enhanced expression of glutathione S-transferases (GST), important in the metabolism and pharmacological function of seleno-compounds. In C57 BL/6 mice, DSBA prevented the suppression of bone marrow hematopoietic cells caused by ionizing radiation exposure. Such in vivo prevention effects were associated with Nrf2 pathway activation in both bone marrow cells and liver tissue. These findings demonstrated for the first time the pharmacological properties of DSBA in vivo, suggesting a practical application for this type of Se-hormetic molecules as a radioprotective and/or prevention agents in cancer treatments.
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Affiliation(s)
- Desirée Bartolini
- Department of Pharmaceutical Sciences, University of Perugia, Perugia, Italy
- * E-mail:
| | - Yanzhong Wang
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC, United States of America
| | - Jie Zhang
- Department of Cell and Molecular Pharmacology and Experimental Therapeutics, Medical University of South Carolina, Charleston, SC, United States of America
| | - Daniela Giustarini
- Department of Biotechnology Chemistry and Pharmacy, University of Siena, Siena, Italy
| | - Ranieri Rossi
- Department of Biotechnology Chemistry and Pharmacy, University of Siena, Siena, Italy
| | - Gavin Y. Wang
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC, United States of America
| | - Pierangelo Torquato
- Department of Pharmaceutical Sciences, University of Perugia, Perugia, Italy
| | - Danyelle M. Townsend
- Department of Cell and Molecular Pharmacology and Experimental Therapeutics, Medical University of South Carolina, Charleston, SC, United States of America
| | - Kenneth D. Tew
- Department of Cell and Molecular Pharmacology and Experimental Therapeutics, Medical University of South Carolina, Charleston, SC, United States of America
| | - Francesco Galli
- Department of Pharmaceutical Sciences, University of Perugia, Perugia, Italy
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23
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Premkumar K, Nair J, Shankar BS. Differential radio-adaptive responses in BALB/c and C57BL/6 mice: pivotal role of calcium and nitric oxide signalling. Int J Radiat Biol 2019; 95:655-666. [PMID: 30676176 DOI: 10.1080/09553002.2019.1571647] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Purpose: Our earlier studies demonstrated that transient radio-adaptive responses (RAR) in BALB/c mice were due to MAPK hyperactivation. The objective of this study was to determine the time duration of this low dose induced MAPK activation in BALB/c mice and to find out if similar adaptive responses are observed in C57BL/6 mice. Materials and methods: Mice were irradiated with 0.1 Gy priming dose (PD), 2 Gy challenge dose (CD) with an interval of 4 h (P + CD) and radiation induced immunosuppression in splenic lymphocytes was monitored as the endpoint for RAR. Results: Time kinetics following 0.1 Gy demonstrated persistence of MAPK hyperactivation till 48 h. Similar experiments in C57BL/6 mice indicated absence of RAR at 24 h following CD, in spite of MAPK activation which was also confirmed by time kinetics. Therefore, upstream activators of MAPK, viz., reactive oxygen and nitrogen species (ROS, RNS) and calcium levels were estimated. There was increased intracellular calcium (Ca2+) and nitric oxide (NO) in BALB/c and an increase in intracellular ROS in C57BL/6 mice 24 h after PD. Inhibition of NO and calcium chelation abrogated RAR in BALB/c mice. In vitro treatment of spleen cells with combination of NO donor and Ca2+ ionophore mimicked the effect of PD and induced adaptive response after 2 Gy not only in BALB/c but also in C57BL/6 mice confirming their crucial role in RAR. Conclusions: These results suggest that low dose induced differential induction of Ca2+ and NO signaling along with MAPK was responsible for contrasting RAR with respect to immune system of BALB/c and C57BL/6 mice. Abbreviations [3H]-TdR: 3H-methyl-thymidine; BAPTA: 1,2-bis(o-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid; CD: Challenge Dose; CFSE: Carboxy Fluorescein Succinamidyl Ester; on A: Concanavalin A; DAF-FM: 4-amino-5-methylamino-2',7'-difluorescein; DCF-DA: 2',7'-dichlorofluorescein diacetate; DSB: Double Strand Break; ELISA: Enzyme Linked ImmunoSorbent Assay; ERK: Extracellular signal-Regulated protein Kinase; FBS: Fetal Bovine Serum; HIF-1A: Hypoxia-Inducible Factor 1-alpha; LDR: Low Dose Radiation; MAPK: Mitogen Activated Protein Kinase; MAPKK/MKK: MAPK Kinase; MAPKKK: MAPK Kinase Kinase; NO: Nitric Oxide; NOS: Nitric Oxide Synthase; P + CD: Priming + Challenge dose; PBS: Phosphate Buffered Saline; PBST: Phosphate Buffered Saline-Tween 20; PD: Priming Dose; PI3K: Phosphatidyl Inositol 3-Kinase; PKC: Protein Kinase C; RAR: Radio Adaptive Response; RNS: Reactive Nitrogen Species; ROS: Reactive Oxygen Species; RPMI-1640: Roswell Park Memorial Institute-1640 medium; SAPK/JNK: Stress-Activated Protein Kinase/ c-Jun NH2-terminal Kinase; SEM: Standard Error of Mean; SNAP: S-nitro amino penicillamine; TP53: Tumor Protein 53; γ-H2AX: Gamma- H2A histone family member X; Th1: Type 1 helper T cell responses; Th2: Type 2 helper T cell responses.
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Affiliation(s)
- Kavitha Premkumar
- a Immunology Section, Radiation Biology & Health Sciences Division , Bio-Science Group, Bhabha Atomic Research Centre , Mumbai , India
| | - Jisha Nair
- a Immunology Section, Radiation Biology & Health Sciences Division , Bio-Science Group, Bhabha Atomic Research Centre , Mumbai , India
| | - Bhavani S Shankar
- a Immunology Section, Radiation Biology & Health Sciences Division , Bio-Science Group, Bhabha Atomic Research Centre , Mumbai , India
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Li C, Luo Y, Shao L, Meng A, Zhou D. NOS2 deficiency has no influence on the radiosensitivity of the hematopoietic system. Cell Biosci 2018; 8:33. [PMID: 29736233 PMCID: PMC5922011 DOI: 10.1186/s13578-018-0228-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Accepted: 04/12/2018] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE Previous studies have shown that inhibition of inducible NO synthase (NOS2 or iNOS) with an inhibitor can selectively protect several normal tissues against radiation during radiotherapy. However, the role of NOS2 in ionizing radiation (IR)-induced bone marrow (BM) suppression is unknown and thus was investigated in the present study using NOS2-/- and wild-type mice 14 days after they were exposed to a sublethal dose of total body irradiation (TBI). METHODS The effects of different doses of IR (1, 2 and 4 Gy) on the apoptosis and colony-forming ability of bone marrow cells from wild-type (WT) and NOS2-/- mice were investigated in vitro. In addition, we exposed NOS2-/- mice and WT mice to 6-Gy TBI or sham irradiation. They were euthanized 14 days after TBI for analysis of peripheral blood cell counts and bone marrow cellularity. Colony-forming unit-granulocyte and macrophage, burst-forming unit-erythroid and CFU-granulocyte, erythroid, macrophage in bone marrow cells from the mice were determined to evaluate the function of hematopoietic progenitor cells (HPCs), and the ability of hematopoietic stem cells (HSCs) to self-renew was analysed by the cobblestone area forming cell assay. The cell cycling of HPCs and HSCs were measured by flow cytometry. RESULTS Exposure to 2 and 4 Gy IR induced bone marrow cell apoptosis and inhibited the proliferation of HPCs in vitro. However, there was no difference between the cells from WT mice and NOS2-/- mice in response to IR exposure in vitro. Exposure of WT mice and NOS2-/- mice to 6 Gy TBI decreased the white blood cell, red blood cell, and platelet counts in the peripheral blood and bone marrow mononuclear cells, and reduced the colony-forming ability of HPCs (P < 0.05), damaged the clonogenic function of HSCs. However, these changes were not significantly different in WT and NOS2-/- mice. CONCLUSION These data suggest that IR induces BM suppression in a NOS2-independent manner.
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Affiliation(s)
- Chengcheng Li
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) and Comparative Medicine Center, Peking Union Medical College (PUMC), Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, Beijing, 100021 China
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR USA
| | - Yi Luo
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR USA
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
| | - Lijian Shao
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR USA
- Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, 4301 W Markham, #607, Little Rock, AR 72205 USA
| | - Aimin Meng
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS) and Comparative Medicine Center, Peking Union Medical College (PUMC), Key Laboratory of Human Disease Comparative Medicine, Ministry of Health, Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, Beijing, 100021 China
| | - Daohong Zhou
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR USA
- Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, 4301 W Markham, #607, Little Rock, AR 72205 USA
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Peng D, Wang H, Li L, Ma X, Chen Y, Zhou H, Luo Y, Xiao Y, Liu L. miR-34c-5p promotes eradication of acute myeloid leukemia stem cells by inducing senescence through selective RAB27B targeting to inhibit exosome shedding. Leukemia 2018; 32:1180-1188. [PMID: 29479064 DOI: 10.1038/s41375-018-0015-2] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 12/11/2017] [Accepted: 01/02/2018] [Indexed: 12/20/2022]
Abstract
Leukemia stem cells (LSCs) are responsible for acute myeloid leukemia (AML) chemotherapy resistance and relapse. Here, we discovered that miR-34c-5p, a microRNA central to the senescence regulation network, was significantly down-regulated in AML (non-acute promyelocytic leukemia, non-APL) stem cells compared to that in normal hematopoietic stem cells (HSCs). The lower expression of miR-34c-5p in LSCs was closely correlated to the adverse prognosis and poor responses to therapy of AML patients. Increased miR-34c-5p expression induced LSCs senescence ex vivo, prevented leukemia development and promoted the eradication of LSCs in immune deficient mice. Mechanistically, forced expression of miR-34-5p induced senescence in LSCs through p53-p21Cip1-Cyclin-dependent kinase (CDK)/Cyclin or p53-independent CDK/Cyclin pathways. Exosome-mediated transfer of miR-34c-5p was one of the reasons for miR-34c-5p deficiency in LSCs. Furthermore, miR-34c-5p could increase its intracellular level by inhibiting exosome-mediated transfer via a positive feedback loop through RAB27B, a molecule that promotes exosome shedding. Overall, this study establishes a new strategy for treatment of AML patients by targeting LSCs to reinitiate senescence via increased miR-34c-5p expression. This miRNA-mediated tumor stem cell senescence could also have important therapeutic value in other malignancies.
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Affiliation(s)
- Danyue Peng
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Huifang Wang
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Lei Li
- Department of Pediatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Xiao Ma
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Ying Chen
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Hao Zhou
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yi Luo
- Department of Hematology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430000, China.
| | - Yin Xiao
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Lingbo Liu
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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Serrano-Lopez J, Nattamai K, Pease NA, Shephard MS, Wellendorf AM, Sertorio M, Smith EA, Geiger H, Wells SI, Cancelas JA, Privette Vinnedge LM. Loss of DEK induces radioresistance of murine restricted hematopoietic progenitors. Exp Hematol 2017; 59:40-50.e3. [PMID: 29288703 DOI: 10.1016/j.exphem.2017.12.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 12/15/2017] [Accepted: 12/19/2017] [Indexed: 11/18/2022]
Abstract
Self-renewing hematopoietic stem cells and multipotent progenitor cells are responsible for maintaining hematopoiesis throughout an individual's lifetime. For overall health and survival, it is critical that the genome stability of these cells is maintained and that the cell population is not exhausted. Previous reports have indicated that the DEK protein, a chromatin structural protein that functions in numerous nuclear processes, is required for DNA damage repair in vitro and long-term engraftment of hematopoietic stem cells in vivo. Therefore, we investigated the role of DEK in normal hematopoiesis and response to DNA damaging agents in vivo. Here, we report that hematopoiesis is largely unperturbed in DEK knockout mice compared with wild-type (WT) controls. However, DEK knockout mice have fewer radioprotective units, but increased capacity to survive repeated sublethal doses of radiation exposure compared with WT mice. Furthermore, this increased survival correlated with a sustained quiescent state in which DEK knockout restricted hematopoietic progenitor cells (HPC-1) were nearly three times more likely to be quiescent following irradiation compared with WT cells and were significantly more radioresistant during the early phases of myeloid reconstitution. Together, our studies indicate that DEK functions in the normal hematopoietic stress response to recurrent radiation exposure.
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Affiliation(s)
- Juana Serrano-Lopez
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Kalpana Nattamai
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Nicholas A Pease
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Miranda S Shephard
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Ashley M Wellendorf
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Mathieu Sertorio
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Eric A Smith
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Hartmut Geiger
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Susanne I Wells
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Jose A Cancelas
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Lisa M Privette Vinnedge
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio.
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Thioredoxin mitigates radiation-induced hematopoietic stem cell injury in mice. Stem Cell Res Ther 2017; 8:263. [PMID: 29141658 PMCID: PMC5688691 DOI: 10.1186/s13287-017-0711-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 10/03/2017] [Accepted: 10/24/2017] [Indexed: 12/17/2022] Open
Abstract
Background Radiation exposure poses a significant threat to public health. Hematopoietic injury is one of the major manifestations of acute radiation sickness. Protection and/or mitigation of hematopoietic stem cells (HSCs) from radiation injury is an important goal in the development of medical countermeasure agents (MCM). We recently identified thioredoxin (TXN) as a novel molecule that has marked protective and proliferative effects on HSCs. In the current study, we investigated the effectiveness of TXN in rescuing mice from a lethal dose of total body radiation (TBI) and in enhancing hematopoietic reconstitution following a lethal dose of irradiation. Methods We used in-vivo and in-vitro methods to understand the biological and molecular mechanisms of TXN on radiation mitigation. BABL/c mice were used for the survival study and a flow cytometer was used to quantify the HSC population and cell senescence. A hematology analyzer was used for the peripheral blood cell count, including white blood cells (WBCs), red blood cells (RBCs), hemoglobin, and platelets. Colony forming unit (CFU) assay was used to study the colongenic function of HSCs. Hematoxylin and eosin staining was used to determine the bone marrow cellularity. Senescence-associated β-galactosidase assay was used for cell senescence. Western blot analysis was used to evaluate the DNA damage and senescence protein expression. Immunofluorescence staining was used to measure the expression of γ-H2AX foci for DNA damage. Results We found that administration of TXN 24 h following irradiation significantly mitigates BALB/c mice from TBI-induced death: 70% of TXN-treated mice survived, whereas only 25% of saline-treated mice survived. TXN administration led to enhanced recovery of peripheral blood cell counts, bone marrow cellularity, and HSC population as measured by c-Kit+Sca-1+Lin– (KSL) cells, SLAM + KSL cells and CFUs. TXN treatment reduced cell senescence and radiation-induced double-strand DNA breaks in both murine bone marrow lineage-negative (Lin–) cells and primary fibroblasts. Furthermore, TXN decreased the expression of p16 and phosphorylated p38. Our data suggest that TXN modulates diverse cellular processes of HSCs. Conclusions Administration of TXN 24 h following irradiation mitigates radiation-induced lethality. To the best of our knowledge, this is the first report demonstrating that TXN reduces radiation-induced lethality. TXN shows potential utility in the mitigation of radiation-induced hematopoietic injury.
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Zhang Y, Qian J, Ren H, Meng F, Ma R, Xu B. Human-specific CHRFAM7A protects against radiotherapy-induced lacrimal gland injury by inhibiting the p38/JNK signalling pathway and oxidative stress. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2017; 10:9001-9011. [PMID: 31966770 PMCID: PMC6965404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 06/22/2017] [Indexed: 06/10/2023]
Abstract
Radiotherapy-induced lacrimal gland injury often causes dry eye. Oxidative stress and local inflammation are the primary consequences of radiotherapy-induced injury. The most recent research shows that the human-specific gene CHRFAM7A plays an important role in inflammation. However, the effect of CHRFAM7A on radiotherapy-induced lacrimal gland injury remains unclear. In this study, humanized mice were successfully generated via the transplantation of human peripheral blood mononuclear cells that expressed human-specific genes. After radiation, the CHRFAM7A gene was highly expressed in the lacrimal glands of humanized mice, in which it protected the function of the lacrimal gland after radiotherapy. CHRFAM7A down-regulated radiotherapy-induced inflammation by suppressing p38/JNK signalling. CHRFAM7A also inhibited oxidative stress in the haematopoietic system after radiotherapy. Further signalling pathway analyses indicated that CHRFAM7A suppressed Akt (protein kinase B, PKB) phosphorylation. CHRFAM7A may therefore be a therapeutic target in radiation-induced lacrimal gland injury.
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Affiliation(s)
- Yanqing Zhang
- Department of Ophthalmology, Eye and ENT Hospital of Fudan University Shanghai, P. R. China
| | - Jiang Qian
- Department of Ophthalmology, Eye and ENT Hospital of Fudan University Shanghai, P. R. China
| | - Hui Ren
- Department of Ophthalmology, Eye and ENT Hospital of Fudan University Shanghai, P. R. China
| | - Fengxi Meng
- Department of Ophthalmology, Eye and ENT Hospital of Fudan University Shanghai, P. R. China
| | - Ruiqi Ma
- Department of Ophthalmology, Eye and ENT Hospital of Fudan University Shanghai, P. R. China
| | - Binbin Xu
- Department of Ophthalmology, Eye and ENT Hospital of Fudan University Shanghai, P. R. China
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29
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Li GW, Yang XF, Fu N, Ou-Yang Y, Qing K. Relation Between Cellular Senescence and Liver Diseases. ACTA ACUST UNITED AC 2016; 31:121-126. [PMID: 28031101 DOI: 10.1016/s1001-9294(16)30036-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Cellular senescence refers to a process that cellular proliferation and differentiation modulated by the multiple stimulating factors gradually decline. Aging cells present the irreversible stop of proliferation and differentiation and change in secretory function because the cell cycle of aging cells is steadily blocked at some point. It has have been shown that cellular senescence plays an important role in the occurrence and development of liver diseases. In this paper, we review the advances in relations between cellular senescence and liver diseases.
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Affiliation(s)
- Guo-Wen Li
- Department of Gastroenterology, the Affiliated NanhuaHospital of University of South China, Hengyang 421002, Hunan, China
| | - Xue-Feng Yang
- Department of Gastroenterology, the Affiliated NanhuaHospital of University of South China, Hengyang 421002, Hunan, China
| | - Nian Fu
- Department of Gastroenterology, the Affiliated NanhuaHospital of University of South China, Hengyang 421002, Hunan, China
| | - Yan Ou-Yang
- Department of Gastroenterology, the Affiliated NanhuaHospital of University of South China, Hengyang 421002, Hunan, China
| | - Kai Qing
- Department of Gastroenterology, the Affiliated NanhuaHospital of University of South China, Hengyang 421002, Hunan, China
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p38 MAPK Inhibitor Insufficiently Attenuates HSC Senescence Administered Long-Term after 6 Gy Total Body Irradiation in Mice. Int J Mol Sci 2016; 17:ijms17060905. [PMID: 27338355 PMCID: PMC4926439 DOI: 10.3390/ijms17060905] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 05/16/2016] [Accepted: 06/03/2016] [Indexed: 11/16/2022] Open
Abstract
Senescent hematopoietic stem cells (HSCs) accumulate with age and exposure to stress, such as total-body irradiation (TBI), which may cause long-term myelosuppression in the clinic. However, the methods available for long-term myelosuppression remain limited. Previous studies have demonstrated that sustained p38 mitogen-activated protein kinases (p38 MAPK) activation in HSCs following exposure to TBI in mice and the administration of its inhibitor twenty-four hours after TBI may partially prevent long-term myelosuppression. However, long-term myelosuppression is latent and identified long after the administration of radiation. In this study, we investigated the effects of SB203580 (a small molecule inhibitor of p38 MAPK) on long-term myelosuppression induced by TBI. Mice with hematopoietic injury were injected intraperitoneally with SB203580 every other day five times beginning 70 days after 6 Gy of 137Cs γ ray TBI. Our results at 80 days demonstrated that SB203580 did not significantly improve the TBI-induced long-term reduction of peripheral blood cell and bone marrow nucleated cell (BMNC) counts, or defects in hematopoietic progenitor cells (HPCs) and HSC clonogenic function. SB203580 reduced reactive oxygen species (ROS) production and p-p38 expression; however, SB203580 had no effect on p16 expression in the HSCs of mice. In conclusion, these findings suggest that treatment with SB203580 70 days after TBI in mice inhibits the ROS-p38 oxidative stress pathway; however, it has no therapeutic effect on long-term myelosuppression induced by TBI.
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Xu T, Zhong L, Gan LG, Xiao CL, Shan ZL, Yang R, Song H, Li L, Liu BZ. Effects of LG268 on Cell Proliferation and Apoptosis of NB4 Cells. Int J Med Sci 2016; 13:517-23. [PMID: 27429588 PMCID: PMC4946122 DOI: 10.7150/ijms.15507] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 06/12/2016] [Indexed: 12/28/2022] Open
Abstract
AIMS To investigate the effect of LG100268 (LG268) on cell proliferation and apoptosis in NB4 cells. METHODS NB4 cells were treated with LG268 for 24 h or 48 h. The effect of LG268 on cell proliferation was assessed by the CCK-8 assay and colony-forming assay. Apoptosis and cell cycle were evaluated by flow cytometry. The protein expression levels of Survivin, PARP, c-Myc, cyclin D1, ERK, p-ERK, p38 MAPK, and p- p38 MAPK were detected by western blot. RESULTS We found that LG268 inhibited the proliferation of NB4 cells in a dose-dependent manner. Flow cytometry analysis showed that LG268 accelerated apoptosis in NB4 cells in a time- dependent manner and that LG268 treatment led to cell cycle arrest at G0/G1 phase. Moreover, LG268 significantly decreased the protein levels of Survivin, c-Myc, and cyclinD1. Cleaved PARP was observed in the LG268 treatment group but not in the control group. In addition, LG268 increased the phosphorylation level of p38 MAPK and decreased the phosphorylation level of ERK. CONCLUSIONS LG268 inhibited cell proliferation and promoted cell apoptosis in NB4 cells.
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Affiliation(s)
- Ting Xu
- 1. Central Laboratory of Yong-chuan Hospital, Chongqing Medical University, Chongqing, 402160, China; 2. Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Liang Zhong
- 2. Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Liu-Gen Gan
- 1. Central Laboratory of Yong-chuan Hospital, Chongqing Medical University, Chongqing, 402160, China; 2. Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Chun-Lan Xiao
- 1. Central Laboratory of Yong-chuan Hospital, Chongqing Medical University, Chongqing, 402160, China; 2. Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Zhi-Ling Shan
- 2. Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Rong Yang
- 2. Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Hao Song
- 2. Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Liu Li
- 2. Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
| | - Bei-Zhong Liu
- 1. Central Laboratory of Yong-chuan Hospital, Chongqing Medical University, Chongqing, 402160, China; 2. Key Laboratory of Laboratory Medical Diagnostics, Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, China
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Li C, Lu L, Zhang J, Huang S, Xing Y, Zhao M, Zhou D, Li D, Meng A. Granulocyte colony-stimulating factor exacerbates hematopoietic stem cell injury after irradiation. Cell Biosci 2015; 5:65. [PMID: 26609358 PMCID: PMC4659162 DOI: 10.1186/s13578-015-0057-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 11/12/2015] [Indexed: 12/11/2022] Open
Abstract
Background Exposure to a moderate to high dose of ionizing radiation (IR) not only causes acute radiation syndrome but also induces long-term (LT) bone marrow (BM) injury. The latter effect of IR is primarily attributed to the induction of hematopoietic stem cell (HSC) senescence. Granulocyte colony-stimulating factor (G-CSF) is the only treatment recommended to be given to radiation victims soon after IR. However, clinical studies have shown that G-CSF used to treat the leukopenia induced by radiotherapy or chemotherapy in patients can cause sustained low white blood cell counts in peripheral blood. It has been suggested that this adverse effect is caused by HSC and hematopoietic progenitor cell (HPC) proliferation and differentiation stimulated by G-CSF, which impairs HSC self-renewal and may exhaust the BM capacity to exacerbate IR-induced LT-BM injury. Methods C57BL/6 mice were exposed to 4 Gy γ-rays of total body irradiation (TBI) at a dose-rate of 1.08 Gy per minute, and the mice were treated with G-CSF (1 μg/each by ip) or vehicle at 2 and 6 h after TBI on the first day and then twice every day for 6 days. All mice were killed one month after TBI for analysis of peripheral blood cell counts, bone marrow cellularity and long-term HSC (CD34-lineage-sca1+c-kit+) frequency. The colony-forming unit-granulocyte and macrophage (CFU-GM) ability of HPC was measured by colony-forming cell (CFC) assay, and the HSC self-renewal capacity was analyzed by BM transplantation. The levels of ROS production, the expression of phospho-p38 mitogen-activated protein kinase (p-p38) and p16INK4a (p16) mRNA in HSCs were measured by flow cytometry and RT-PCR, respectively. Results The results of our studies show that G-CSF administration mitigated TBI-induced decreases in WBC and the suppression of HPC function (CFU-GM) (p < 0.05), whereas G-CSF exacerbated the suppression of long-term HSC engraftment after transplantation one month after TBI (p < 0.05); The increase in HSC damage was associated with increased ROS production, activation of p38 mitogen-activated protein kinase (p38), induction of senescence in HSCs. Conclusion Our findings suggest that although G-CSF administration can reduce ARS, it can also exacerbate TBI-induced LT-BM injury in part by promoting HSC senescence via the ROS-p38-p16 pathway.
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Affiliation(s)
- Chengcheng Li
- Institute of Laboratory Animal Science, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China ; Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin, China ; Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Tianjin, China
| | - Lu Lu
- Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin, China ; Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Tianjin, China
| | - Junling Zhang
- Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin, China ; Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Tianjin, China
| | - Song Huang
- Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin, China ; Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Tianjin, China
| | - Yonghua Xing
- Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin, China ; Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Tianjin, China
| | - Mingfeng Zhao
- The First Central Clinical College of Tianjin Medical University, Tianjin First Central Hospital, Tianjin, China
| | - Daohong Zhou
- Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin, China ; Pharmaceutical Sciences and Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, USA
| | - Deguan Li
- Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin, China ; Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Tianjin, China
| | - Aimin Meng
- Institute of Laboratory Animal Science, Peking Union Medical College and Chinese Academy of Medical Science, Beijing, China ; Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin, China ; Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Tianjin, China
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Kavanagh JN, Waring EJ, Prise KM. Radiation responses of stem cells: targeted and non-targeted effects. RADIATION PROTECTION DOSIMETRY 2015; 166:110-117. [PMID: 25877536 DOI: 10.1093/rpd/ncv161] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Stem cells are fundamental to the development of any tissue or organism via their ability to self-renew, which is aided by their unlimited proliferative capacity and their ability to produce fully differentiated offspring, often from multiple lineages. Stems cells are long lived and have the potential to accumulate mutations, including in response to radiation exposure. It is thought that stem cells have the potential to be induced into a cancer stem cell phenotype and that these may play an important role in resistance to radiotherapy. For radiation-induced carcinogenesis, the role of targeted and non-targeted effects is unclear with tissue or origin being important. Studies of genomic instability and bystander responses have shown consistent effects in haematopoietic models. Several models of radiation have predicted that stem cells play an important role in tumour initiation and that bystander responses could play a role in proliferation and self-renewal.
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Affiliation(s)
- J N Kavanagh
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7AE, UK
| | - E J Waring
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7AE, UK
| | - K M Prise
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7AE, UK
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Peng DY, Song H, Liu LB. Resveratrol-downregulated phosphorylated liver kinase B1 is involved in senescence of acute myeloid leukemia stem cells. ACTA ACUST UNITED AC 2015. [PMID: 26223914 DOI: 10.1007/s11596-015-1457-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Senescence is an important obstacle to cancer development. Engaging a senescent response may be an effective way to cure acute myeloid leukemia (AML). The aim of this study was to examine the effect of resveratrol-downregulated phosphorylated liver kinase B1 (pLKB1) on the senescence of acute myeloid leukemia (AML) stem cells. The protein expressions of pLKB1 and Sirtuin 1 (SIRT1), a regulator of pLKB1, were measured in CD34(+)CD38(-) KG1a cells treated with resveratrol (40 μmol/L) or not by Western blotting. Senescence-related factors were examined, including p21 mRNA tested by real-time PCR, cell morphology by senescence-associated β-galactosidase (SA-β-gal) staining, cell proliferation by MTT assay and cell cycle by flow cytometry. Besides, apoptosis was flow cytometrically determined. The results showed that pLKB1 was highly expressed in CD34(+)CD38(-) KG1a cells, and resveratrol, which could downregulate pLKB1 through activation of SIRT1, induced senescence and apoptosis of CD34(+)CD38(-) KG1a cells. It was concluded that resveratrol-downregulated pLKB1 is involved in the senescence of AML stem cells.
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Affiliation(s)
- Dan-Yue Peng
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Hui Song
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Ling-Bo Liu
- Institute of Hematology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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Tetraspanin Family Member, CD82, Regulates Expression of EZH2 via Inactivation of p38 MAPK Signaling in Leukemia Cells. PLoS One 2015; 10:e0125017. [PMID: 25955299 PMCID: PMC4425466 DOI: 10.1371/journal.pone.0125017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Accepted: 03/08/2015] [Indexed: 12/31/2022] Open
Abstract
PURPOSE We recently found that the tetraspanin family member, CD82, which is aberrantly expressed in chemotherapy-resistant CD34(+)/CD38- acute myelogenous leukemia (AML) cells, negatively regulates matrix metalloproteinase 9, and plays an important role in enabling CD34(+)/CD38(-) AML cells to adhere to the bone marrow microenvironment. This study explored novel functions of CD82 that contribute to AML progression. MATERIALS AND METHODS We employed microarray analysis comparing the gene expression profiles between CD34(+)/CD38(-) AML cells transduced with CD82 shRNA and CD34(+)/CD38(-) AML cells transduced with control shRNA. Real-time RT-PCR and western blot analysis were performed to examine the effect of CD82 knockdown on the expression of the polycomb group member, enhancer of zeste homolog 2 (EZH2), in leukemia cells. A chromatin immunoprecipitation assay was performed to examine the effect of CD82 expression on the amount of EZH2 bound to the promoter regions of tumor suppressor genes in leukemia cells. We also utilized methylation-specific PCR to examine whether CD82 expression influences the methylation status of the tumor suppressor gene promoter regions in leukemia cells. RESULTS Microarray analysis revealed that levels of EZH2 decreased after shRNA-mediated depletion of CD82 in CD34(+)/CD38(-) AML cells. Moreover, the antibody-mediated blockade of CD82 in leukemia cells lowered EZH2 expression via activation of p38 MAPK signaling, decreased the amount of EZH2 bound to the promoter regions of the tumor suppressor genes, and inhibited histone H3 lysine 27 trimethylation in these promoter regions, resulting in upregulation of the tumor suppressors at both the mRNA and protein levels.
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Cho J, Yusuf R, Kook S, Attar E, Lee D, Park B, Cheng T, Scadden DT, Lee BC. Purinergic P2Y₁₄ receptor modulates stress-induced hematopoietic stem/progenitor cell senescence. J Clin Invest 2014; 124:3159-71. [PMID: 24937426 DOI: 10.1172/jci61636] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Accepted: 04/29/2014] [Indexed: 11/17/2022] Open
Abstract
Purinergic receptors of the P2Y family are G protein-coupled surface receptors that respond to extracellular nucleotides and can mediate responses to local cell damage. P2Y-dependent signaling contributes to thrombotic and/or inflammatory consequences of tissue injury by altering platelet and endothelial activation and immune cell phagocytosis. Here, we have demonstrated that P2Y14 modifies cell senescence and cell death in response to tissue stress, thereby enabling preservation of hematopoietic stem/progenitor cell function. In mice, P2Y14 deficiency had no demonstrable effect under homeostatic conditions; however, radiation stress, aging, sequential exposure to chemotherapy, and serial bone marrow transplantation increased senescence in animals lacking P2Y14. Enhanced senescence coincided with increased ROS, elevated p16(INK4a) expression, and hypophosphorylated Rb and was inhibited by treatment with a ROS scavenger or inhibition of p38/MAPK and JNK. Treatment of WT cells with pertussis toxin recapitulated the P2Y14 phenotype, suggesting that P2Y14 mediates antisenescence effects through Gi/o protein-dependent pathways. Primitive hematopoietic cells lacking P2Y14 were compromised in their ability to restore hematopoiesis in irradiated mice. Together, these data indicate that P2Y14 on stem/progenitor cells of the hematopoietic system inhibits cell senescence by monitoring and responding to the extracellular manifestations of tissue stress and suggest that P2Y14-mediated responses prevent the premature decline of regenerative capacity after injury.
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Pawar SA, Shao L, Chang J, Wang W, Pathak R, Zhu X, Wang J, Hendrickson H, Boerma M, Sterneck E, Zhou D, Hauer-Jensen M. C/EBPδ deficiency sensitizes mice to ionizing radiation-induced hematopoietic and intestinal injury. PLoS One 2014; 9:e94967. [PMID: 24747529 PMCID: PMC3991713 DOI: 10.1371/journal.pone.0094967] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 03/21/2014] [Indexed: 12/20/2022] Open
Abstract
Knowledge of the mechanisms involved in the radiation response is critical for developing interventions to mitigate radiation-induced injury to normal tissues. Exposure to radiation leads to increased oxidative stress, DNA-damage, genomic instability and inflammation. The transcription factor CCAAT/enhancer binding protein delta (Cebpd; C/EBPδ is implicated in regulation of these same processes, but its role in radiation response is not known. We investigated the role of C/EBPδ in radiation-induced hematopoietic and intestinal injury using a Cebpd knockout mouse model. Cebpd−/− mice showed increased lethality at 7.4 and 8.5 Gy total-body irradiation (TBI), compared to Cebpd+/+ mice. Two weeks after a 6 Gy dose of TBI, Cebpd−/− mice showed decreased recovery of white blood cells, neutrophils, platelets, myeloid cells and bone marrow mononuclear cells, decreased colony-forming ability of bone marrow progenitor cells, and increased apoptosis of hematopoietic progenitor and stem cells compared to Cebpd+/+ controls. Cebpd−/− mice exhibited a significant dose-dependent decrease in intestinal crypt survival and in plasma citrulline levels compared to Cebpd+/+ mice after exposure to radiation. This was accompanied by significantly decreased expression of γ-H2AX in Cebpd−/− intestinal crypts and villi at 1 h post-TBI, increased mitotic index at 24 h post-TBI, and increase in apoptosis in intestinal crypts and stromal cells of Cebpd−/− compared to Cebpd+/+ mice at 4 h post-irradiation. This study uncovers a novel biological function for C/EBPδ in promoting the response to radiation-induced DNA-damage and in protecting hematopoietic and intestinal tissues from radiation-induced injury.
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Affiliation(s)
- Snehalata A. Pawar
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
- * E-mail:
| | - Lijian Shao
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
| | - Jianhui Chang
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
| | - Wenze Wang
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
| | - Rupak Pathak
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
| | - Xiaoyan Zhu
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
| | - Junru Wang
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
| | - Howard Hendrickson
- Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
| | - Marjan Boerma
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
| | - Esta Sterneck
- Center for Cancer Research, National Cancer Institute, Frederick, Maryland, United States of America
| | - Daohong Zhou
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
| | - Martin Hauer-Jensen
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
- Surgical Service, Central Arkansas Veterans Healthcare System, Little Rock, Arkansas, United States of America
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Abstract
SIGNIFICANCE Exposure to ionizing radiation (IR) as the result of nuclear accidents or terrorist attacks is a significant threat and a major medical concern. Hematopoietic stem cell (HSC) injury is the primary cause of death after accidental or intentional exposure to a moderate or high dose of IR. Protecting HSCs from IR should be a primary goal in the development of novel medical countermeasures against radiation. RECENT ADVANCES Significant progress has been made in our understanding of the mechanisms by which IR causes HSC damage. The mechanisms include (i) induction of HSC apoptosis via the p53-Puma pathway; (ii) promotion of HSC differentiation via the activation of the G-CSF/Stat3/BATF-dependent differentiation checkpoint; (iii) induction of HSC senescence via the ROS-p38 pathway; and (iv) damage to the HSC niche. CRITICAL ISSUES Induction of apoptosis in HSCs and hematopoietic progenitor cells is primarily responsible for IR-induced acute bone marrow (BM) injury. Long-term BM suppression caused by IR is mainly attributable to the induction of HSC senescence. However, the promotion of HSC differentiation and damage to the HSC niche can contribute to both the acute and long-term effects of IR on the hematopoietic system. FUTURE DIRECTIONS In this review, we have summarized a number of recent findings that provide new insights into the mechanisms whereby IR damages HSCs. These findings will provide new opportunities for developing a mechanism-based strategy to prevent and/or mitigate IR-induced BM suppression. Antioxid.
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Affiliation(s)
- Lijian Shao
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences , Little Rock, Arkansas
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Total body irradiation causes long-term mouse BM injury via induction of HSC premature senescence in an Ink4a- and Arf-independent manner. Blood 2014; 123:3105-15. [PMID: 24622326 DOI: 10.1182/blood-2013-07-515619] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Exposure to total body irradiation (TBI) induces not only acute hematopoietic radiation syndrome but also long-term or residual bone marrow (BM) injury. This residual BM injury is mainly attributed to permanent damage to hematopoietic stem cells (HSCs), including impaired self-renewal, decreased long-term repopulating capacity, and myeloid skewing. These HSC defects were associated with significant increases in production of reactive oxygen species (ROS), expression of p16(Ink4a) (p16) and Arf mRNA, and senescence-associated β-galacotosidase (SA-β-gal) activity, but not with telomere shortening or increased apoptosis, suggesting that TBI induces residual BM injury via induction of HSC premature senescence. This suggestion is supported by the finding that SA-β-gal(+) HSC-enriched LSK cells showed more pronounced defects in clonogenic activity in vitro and long-term engraftment after transplantation than SA-β-gal(-) LSK cells isolated from irradiated mice. However, genetic deletion of p16 and/or Arf had no effect on TBI-induced residual BM suppression and HSC senescence, because HSCs from irradiated p16 and/or Arf knockout (KO) mice exhibited changes similar to those seen in HSCs from wild-type mice after exposure to TBI. These findings provide important new insights into the mechanism by which TBI causes long-term BM suppression (eg, via induction of premature senescence of HSCs in a p16-Arf-independent manner).
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Manda K, Kavanagh JN, Buttler D, Prise KM, Hildebrandt G. Low dose effects of ionizing radiation on normal tissue stem cells. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2014; 761:6-14. [PMID: 24566131 DOI: 10.1016/j.mrrev.2014.02.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Revised: 02/03/2014] [Accepted: 02/13/2014] [Indexed: 12/18/2022]
Abstract
In recent years, there has been growing evidence for the involvement of stem cells in cancer initiation. As a result of their long life span, stem cells may have an increased propensity to accumulate genetic damage relative to differentiated cells. Therefore, stem cells of normal tissues may be important targets for radiation-induced carcinogenesis. Knowledge of the effects of ionizing radiation (IR) on normal stem cells and on the processes involved in carcinogenesis is very limited. The influence of high doses of IR (>5Gy) on proliferation, cell cycle and induction of senescence has been demonstrated in stem cells. There have been limited studies of the effects of moderate (0.5-5Gy) and low doses (<0.5Gy) of IR on stem cells however, the effect of low dose IR (LD-IR) on normal stem cells as possible targets for radiation-induced carcinogenesis has not been studied in any depth. There may also be important parallels between stem cell responses and those of cancer stem cells, which may highlight potential key common mechanisms of their response and radiosensitivity. This review will provide an overview of the current knowledge of radiation-induced effects on normal stem cells, with particular focus on low and moderate doses of IR.
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Affiliation(s)
- Katrin Manda
- Department of Radiotherapy and Radiation Oncology, University of Rostock, Suedring 75, 18059 Rostock, Germany.
| | - Joy N Kavanagh
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, United Kingdom.
| | - Dajana Buttler
- Department of Radiotherapy and Radiation Oncology, University of Rostock, Suedring 75, 18059 Rostock, Germany.
| | - Kevin M Prise
- Centre for Cancer Research and Cell Biology, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, United Kingdom.
| | - Guido Hildebrandt
- Department of Radiotherapy and Radiation Oncology, University of Rostock, Suedring 75, 18059 Rostock, Germany.
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Suzuki K, Yamashita S. Radiation-Induced Bystander Response: Mechanism and Clinical Implications. Adv Wound Care (New Rochelle) 2014; 3:16-24. [PMID: 24761341 DOI: 10.1089/wound.2013.0468] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Accepted: 06/21/2013] [Indexed: 01/05/2023] Open
Abstract
Significance: Absorption of energy from ionizing radiation (IR) to the genetic material in the cell gives rise to damage to DNA in a dose-dependent manner. There are two types of DNA damage; by a high dose (causing acute or deterministic effects) and by a low dose (related to chronic or stochastic effects), both of which induce different health effects. Among radiation effects, acute cutaneous radiation syndrome results from cell killing as a consequence of high-dose exposure. Recent advances: Recent advances in radiation biology and oncology have demonstrated that bystander effects, which are emerged in cells that have never been exposed, but neighboring irradiated cells, are also involved in radiation effects. Bystander effects are now recognized as an indispensable component of tissue response related to deleterious effects of IR. Critical issues: Evidence has indicated that nonapoptotic premature senescence is commonly observed in various tissues and organs. Senesced cells were found to secrete various proteins, including cytokines, chemokines, and growth factors, most of which are equivalent to those identified as bystander factors. Secreted factors could trigger cell proliferation, angiogenesis, cell migration, inflammatory response, etc., which provide a tissue microenvironment assisting tissue repair and remodeling. Future directions: Understandings of the mechanisms and physiological relevance of radiation-induced bystander effects are quite essential for the beneficial control of wound healing and care. Further studies should extend our knowledge of the mechanisms of bystander effects and mode of cell death in response to IR.
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Affiliation(s)
- Keiji Suzuki
- Department of Radiation Medical Sciences, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, Japan
| | - Shunichi Yamashita
- Department of Radiation Medical Sciences, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, Japan
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Abstract
Reactive oxygen species (ROS) play an important role in determining the fate of normal stem cells. Low levels of ROS are required for stem cells to maintain quiescence and self-renewal. Increases in ROS production cause stem cell proliferation/differentiation, senescence, and apoptosis in a dose-dependent manner, leading to their exhaustion. Therefore, the production of ROS in stem cells is tightly regulated to ensure that they have the ability to maintain tissue homeostasis and repair damaged tissues for the life span of an organism. In this chapter, we discuss how the production of ROS in normal stem cells is regulated by various intrinsic and extrinsic factors and how the fate of these cells is altered by the dysregulation of ROS production under various pathological conditions. In addition, the implications of the aberrant production of ROS by tumor stem cells for tumor progression and treatment are also discussed.
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Affiliation(s)
- Daohong Zhou
- Division of Radiation Health, Department of Pharmaceutical Sciences, Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA.
| | - Lijian Shao
- Division of Radiation Health, Department of Pharmaceutical Sciences, Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Douglas R Spitz
- Free Radical and Radiation Biology Program, Department of Radiation Oncology, Holden Comprehensive Cancer Center, Carver College of Medicine, The University of Iowa, Iowa City, Iowa, USA.
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43
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Inhibition of p38 mitogen-activated protein kinase ameliorates radiation-induced ototoxicity in zebrafish and cochlea-derived cell lines. Neurotoxicology 2013; 40:111-22. [PMID: 24374476 DOI: 10.1016/j.neuro.2013.12.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2013] [Revised: 12/04/2013] [Accepted: 12/10/2013] [Indexed: 11/21/2022]
Abstract
Radiation is a widely used treatment for head and neck cancers, and one of its most severe side effects is ototoxicity. Radiation-induced ototoxicity has been demonstrated to be linked to the increased production of ROS and MAPK. We intended to investigate the effect of p38 inhibition on radiation-induced ototoxicity in cochlea-derived HEI-OC1 cells and in a zebrafish model. The otoprotective effect of p38 inhibition against radiation was tested in vitro in the organ of Corti-derived cell line, HEI-OC1, and in vivo in a zebrafish model. Radiation-induced apoptosis, mitochondrial dysfunction, and an increase of intracellular NO generation were demonstrated in HEI-OC1 cells. The p38-specific inhibitor, SB203580, ameliorated radiation-induced apoptosis and mitochondrial injury in HEI-OC1 cells. p38 inhibition reduced radiation-induced activation of JNK, p38, cytochrome c, and cleavage of caspase-3 and PARP in HEI-OC1 cells. Scanning electron micrography showed that SB203580 prevented radiation-induced destruction of kinocilium and stereocilia in zebrafish neuromasts. The results of this study suggest that p38 plays an important role in mediating radiation-induced ototoxicity and inhibition of p38 could be a plausible option for preventing radiation ototoxicity.
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Key Words
- Apoptosis
- DMEM,
- DMSO,
- Dulbecco's modified Eagle's medium
- ERK,
- FBS,
- FITC,
- HNSCC,
- IHC,
- Inner hair cell
- JNK,
- MAPK,
- MMP,
- NO,
- PARP,
- PBS,
- PI,
- ROS,
- SB203580
- SEM,
- SNHL,
- TUNEL,
- c-Jun N-terminal kinase
- days post-fertilization
- dimethyl sulfoxide
- dpf,
- extracellular signal-regulated kinases
- fetal bovine serum
- fluorescein isothiocyanate
- head and neck squamous cell carcinoma
- hearing preservation
- mitochondrial membrane potential
- mitogen-activated protein kinase
- nitric oxide
- p38
- p38, p38
- phosphate buffered saline
- poly ADP ribose polymerase
- propidium iodide
- radiation
- reactive oxygen species
- scanning electron microscopy
- sensorineural hearing loss
- terminal deoxynucleotidyl transferase (TdT)-mediated dUTP-biotin nick end labeling
- zebrafish
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44
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Could radiotherapy effectiveness be enhanced by electromagnetic field treatment? Int J Mol Sci 2013; 14:14974-95. [PMID: 23867611 PMCID: PMC3742283 DOI: 10.3390/ijms140714974] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Revised: 06/25/2013] [Accepted: 07/01/2013] [Indexed: 12/19/2022] Open
Abstract
One of the main goals in radiobiology research is to enhance radiotherapy effectiveness without provoking any increase in toxicity. In this context, it has been proposed that electromagnetic fields (EMFs), known to be modulators of proliferation rate, enhancers of apoptosis and inductors of genotoxicity, might control tumor recruitment and, thus, provide therapeutic benefits. Scientific evidence shows that the effects of ionizing radiation on cellular compartments and functions are strengthened by EMF. Although little is known about the potential role of EMFs in radiotherapy (RT), the radiosensitizing effect of EMFs described in the literature could support their use to improve radiation effectiveness. Thus, we hypothesized that EMF exposure might enhance the ionizing radiation effect on tumor cells, improving the effects of RT. The aim of this paper is to review reports of the effects of EMFs in biological systems and their potential therapeutic benefits in radiotherapy.
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Qiu J, Yang G, Shen Z, Xie Y, Wang L. hPEBP4 as a predictive marker for the pathological response of rectal cancer to preoperative radiotherapy. Int J Colorectal Dis 2013; 28:241-6. [PMID: 22801881 DOI: 10.1007/s00384-012-1534-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/01/2012] [Indexed: 02/04/2023]
Abstract
PURPOSE The ability to predict tumor sensitivity toward radiotherapy is important in the personalized application of preoperative radiotherapy for patients with rectal cancer. The aim of the present study was to test the human phosphatidylethanolamine-binding protein 4 (hPEBP4) as a predictive marker of tumor response to preoperative radiotherapy in patients with rectal cancer. METHOD A retrospective analysis was conducted, consisting of 86 patients with locally advanced rectal cancer who underwent short-course preoperative radiotherapy (20 Gy in five fractions for 1 week) followed by a radical resection. Both pretreatment biopsy specimens and resected primary tumor tissue were collected. Immunohistochemistry and tumor regression grading system were used to evaluate the expression of hPEBP4 in the pretreatment biopsy specimens and the response of rectal cancer to radiotherapy, respectively. Expression of hPEBP4 was correlated with tumor regression in the resected specimen and the clinical outcome of the patients as well. RESULTS We found that high expression of hPEBP4 was associated with radioresistance in both univariate and multivariate analyses, and patients with a high hPEBP4 expression had a poorer progression-free survival than those with low hPEBP4 expression. CONCLUSION Our study revealed the independent predictive values of hPEBP4 in response of rectal cancer to preoperative radiotherapy, which suggests that upregulating hPEBP4 might be a potential mechanism by which rectal cancer cells avoid the destructive effects of radiotherapy.
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Affiliation(s)
- Jianming Qiu
- Department of Colorectal Surgery, The Third People's Hospital of Hangzhou, Hangzhou, China.
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46
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Inhibition of p38 MAPK activity promotes ex vivo expansion of human cord blood hematopoietic stem cells. Ann Hematol 2012; 91:813-23. [PMID: 22258328 DOI: 10.1007/s00277-011-1397-7] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Accepted: 12/28/2011] [Indexed: 10/14/2022]
Abstract
Ex vivo expansion of hematopoietic stem cells (HSCs) depends on HSC self-renewing proliferation and functional maintenance, which can be negatively affected by HSC differentiation, apoptosis, and senescence. Therefore, inhibition of HSC senescence may promote HSC expansion. To test this hypothesis, we examined the effect of inhibition of p38 mitogen-activated protein kinase (p38) on the expansion of human umbilical cord blood (hUCB) CD133(+) cells because activation of p38 has been implicated in the induction of HSC senescence under various physiological and pathological conditions. Our results showed that ex vivo expansion of hUCB CD133(+) cells activated p38, which was abrogated by the p38 specific inhibitor SB203580 (SB). Inhibition of p38 activity with SB promoted the expansion of CD133(+) cells and CD133(+)CD38(-) cells. In addition, hUCB CD133(+) cells expanded in the presence of SB for 7 days showed about threefold increase in the clonogenic function of HSCs and engraftment in non-obese diabetic/severe combined immunodeficient mice after transplantation compared to the input cells. In contrast, the cells expanded without SB exhibited a significant reduction in these HSC functions. The enhancement of ex vivo expansion of hUCB HSCs is primarily attributable to SB-mediated inhibition of HSC senescence. In addition, inhibition of HSC apoptosis and upregulation of CXCR4 may also contribute to the enhancement. However, p38 inhibition had no significant effect on HSC differentiation and proliferation. These findings suggest that inhibition of p38 activation may represent a novel strategy to promote ex vivo expansion of hUCB HSCs.
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