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Soloviev AI, Kizub IV. Mechanisms of vascular dysfunction evoked by ionizing radiation and possible targets for its pharmacological correction. Biochem Pharmacol 2018; 159:121-139. [PMID: 30508525 DOI: 10.1016/j.bcp.2018.11.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 11/28/2018] [Indexed: 12/20/2022]
Abstract
Ionizing radiation (IR) leads to a variety of the cardiovascular diseases, including the arterial hypertension. A number of studies have demonstrated that blood vessels represent important target for IR, and the endothelium is one of the most vulnerable components of the vascular wall. IR causes an inhibition of nitric oxide (NO)-mediated endothelium-dependent vasodilatation and generation of reactive oxygen (ROS) and nitrogen (RNS) species trigger this process. Inhibition of NO-mediated vasodilatation could be due to endothelial NO synthase (eNOS) down-regulation, inactivation of endothelium-derived NO, and abnormalities in diffusion of NO from the endothelial cells (ECs) leading to a decrease in NO bioavailability. Beside this, IR suppresses endothelial large conductance Ca2+-activated K+ channels (BKCa) activity, which control NO synthesis. IR also leads to inhibition of the BKCa current in vascular smooth muscle cells (SMCs) which is mediated by protein kinase C (PKC). On the other hand, IR-evoked enhanced vascular contractility may result from PKC-mediated increase in SMCs myofilament Ca2+ sensitivity. Also, IR evokes vascular wall inflammation and atherosclerosis development. Vascular function damaged by IR can be effectively restored by quercetin-filled phosphatidylcholine liposomes and mesenchymal stem cells injection. Using RNA-interference technique targeted to different PKC isoforms can also be a perspective approach for pharmacological treatment of IR-induced vascular dysfunction.
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Affiliation(s)
- Anatoly I Soloviev
- Department of Pharmacology of Cellular Signaling Systems and Experimental Therapy, Institute of Pharmacology and Toxicology, National Academy of Medical Sciences of Ukraine, 14 Eugene Pottier Street, Kiev 03068, Ukraine
| | - Igor V Kizub
- Department of Pharmacology, New York Medical College, 15 Dana Road, Valhalla 10595, NY, United States.
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Sun Y, Zheng Z, Zhang H, Yu Y, Ma J, Tang K, Xu P, Ji T, Liang X, Chen D, Jin X, Zhang T, Long Z, Liu Y, Huang B. Chemotherapeutic tumor microparticles combining low-dose irradiation reprogram tumor-promoting macrophages through a tumor-repopulating cell-curtailing pathway. Oncoimmunology 2017; 6:e1309487. [PMID: 28680743 DOI: 10.1080/2162402x.2017.1309487] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 03/14/2017] [Accepted: 03/15/2017] [Indexed: 12/13/2022] Open
Abstract
Stem cell-like tumor-repopulating cells (TRCs) have a critical role in establishing a tumor immunosuppressive microenvironment. However, means to enhance antitumor immunity by disrupting TRCs are absent. Our previous studies have shown that tumor cell-derived microparticles (T-MPs) preferentially abrogate TRCs by delivering antitumor drugs into nuclei of TRCs. Here, we show that low dose irradiation (LDI) enhances the effect of cisplatin-packaging T-MPs (Cis-MPs) on TRCs, leading to inhibiting tumor growth in different tumor models. This antitumor effect is not due to the direct killing of tumor cells but is T cell-dependent and relies on macrophages for their efficacy. The underlying mechanism is involved in therapeutic reprograming macrophages from tumor-promotion to tumor-inhibition by disrupting TRCs and curtailing their vicious education on macrophages. These findings provide a novel strategy to reset macrophage polarization and confer their function more like M1 than M2 types with highly promising potential clinical applications.
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Affiliation(s)
- Yanling Sun
- Department of Biochemistry and Molecular Biology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zu'an Zheng
- Department of Cancer, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Huafeng Zhang
- Department of Biochemistry and Molecular Biology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuandong Yu
- Department of Biochemistry and Molecular Biology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jingwei Ma
- Department of Biochemistry and Molecular Biology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Immunology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ke Tang
- Department of Biochemistry and Molecular Biology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Pingwei Xu
- Department of Biochemistry and Molecular Biology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tiantian Ji
- Department of Biochemistry and Molecular Biology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoyu Liang
- Department of Immunology, Institute of Basic Medical Sciences & State Key Laboratory of Medical Molecular Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Degao Chen
- Department of Immunology, Institute of Basic Medical Sciences & State Key Laboratory of Medical Molecular Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xun Jin
- Department of Immunology, Institute of Basic Medical Sciences & State Key Laboratory of Medical Molecular Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Tianzhen Zhang
- Department of Immunology, Institute of Basic Medical Sciences & State Key Laboratory of Medical Molecular Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhixiong Long
- Department of Oncology, the Fifth Hospital of Wuhan, Wuhan, Hubei, China
| | - Yuying Liu
- Department of Immunology, Institute of Basic Medical Sciences & State Key Laboratory of Medical Molecular Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Clinical Immunology Center, Chinese Academy of Medical Sciences, Beijing, China
| | - Bo Huang
- Department of Biochemistry and Molecular Biology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Immunology, Institute of Basic Medical Sciences & State Key Laboratory of Medical Molecular Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Clinical Immunology Center, Chinese Academy of Medical Sciences, Beijing, China
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Prisby RD, Alwood JS, Behnke BJ, Stabley JN, McCullough DJ, Ghosh P, Globus RK, Delp MD. Effects of hindlimb unloading and ionizing radiation on skeletal muscle resistance artery vasodilation and its relation to cancellous bone in mice. J Appl Physiol (1985) 2015; 120:97-106. [PMID: 26472865 DOI: 10.1152/japplphysiol.00423.2015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 10/08/2015] [Indexed: 01/10/2023] Open
Abstract
Spaceflight has profound effects on vascular function as a result of weightlessness that may be further compounded by radiation exposure. The purpose of the present study was to assess the individual and combined effects of hindlimb unloading (HU) and radiation (Rad) on vasodilator responses in the skeletal muscle vasculature. Adult male C57BL/6J mice were randomized to one of four groups: control (Con), HU (tail suspension for 15 days), Rad (200 cGy of (137)Cs), and HU-Rad (15-day tail suspension and 200 cGy of (137)Cs). Endothelium-dependent vasodilation of gastrocnemius feed arteries was assessed in vitro using acetylcholine (ACh, 10(-9)-10(-4) M) and inhibitors of nitric oxide synthase (NOS) and cyclooxygenase (COX). Endothelium-independent vasodilation was assessed using Dea-NONOate (10(-9)-10(-4) M). Endothelium-dependent and -independent vasodilator responses were impaired relative to Con responses in all treatment groups; however, there was no further impairment from the combination of treatments (HU-Rad) relative to that in the HU and Rad groups. The NOS-mediated contribution to endothelium-dependent vasodilation was depressed with HU and Rad. This impairment in NOS signaling may have been partially compensated for by an enhancement of PGI2-mediated dilation. Changes in endothelium-dependent vasodilation were also associated with decrements in trabecular bone volume in the proximal tibia metaphysis. These data demonstrate that the simulated space environment (i.e., radiation exposure and unloading of muscle and bone) significantly impairs skeletal muscle artery vasodilation, mediated through endothelium-dependent reductions in NOS signaling and decrements in vascular smooth muscle cell responsiveness to NO.
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Affiliation(s)
- Rhonda D Prisby
- Department of Kinesiology and Applied Physiology, University of Delaware, Newark, Delaware
| | - Joshua S Alwood
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, California
| | - Brad J Behnke
- Department of Applied Physiology and Kinesiology and the Center for Exercise Science, University of Florida, Gainesville, Florida; Department of Kinesiology and the Johnson Cancer Research Center, Kansas State University, Manhattan, Kansas; and
| | - John N Stabley
- Department of Applied Physiology and Kinesiology and the Center for Exercise Science, University of Florida, Gainesville, Florida
| | - Danielle J McCullough
- Department of Applied Physiology and Kinesiology and the Center for Exercise Science, University of Florida, Gainesville, Florida
| | - Payal Ghosh
- Department of Applied Physiology and Kinesiology and the Center for Exercise Science, University of Florida, Gainesville, Florida; Department of Nutrition, Food and Exercise Sciences, Florida State University, Tallahassee, Florida
| | - Ruth K Globus
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, California
| | - Michael D Delp
- Department of Applied Physiology and Kinesiology and the Center for Exercise Science, University of Florida, Gainesville, Florida; Department of Nutrition, Food and Exercise Sciences, Florida State University, Tallahassee, Florida
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