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Apoptosis of THP-1 Macrophages Induced by Pseudohypericin-Mediated Sonodynamic Therapy Through the Mitochondria-Caspase Pathway. 2016

Xiufeng Zheng, and Jinrong Wu, and Qun Shao, and Xuesong Li, and Jiayuan Kou, and Xing Zhu, and Zhaoyu Zhong, and Yueqing Jiang, and Zhongni Liu, and Hongxia Li, and Ye Tian, and Liming Yang
Department of Pathophysiology, Key Laboratory of Cardiovascular Pathophysiology, Harbin Medical University, Harbin, PR China.

OBJECTIVE Pseudohypericin (P-HY) and its congener hypericin are the major hydroxylated phenanthroperylenediones present in Hypericum species. Our previous study indicated that hypericin was able to function as a sonosensitizer. The potential use of P-HY as a sonosensitizer for sonodynamic therapy (SDT) requires further exploration. Thus, this study aimed to investigate the effects of P-HY-SDT on THP-1 macrophages. METHODS THP-1 macrophages were incubated with P-HY, and cell viability was measured using a CCK-8 assay. Fluorescence microscopy assessed the intracellular reactive oxygen species (ROS), mitochondrial membrane potential (ΔΨm ) and mitochondrial permeability transition pore (mPTP) opening. Apoptotic and necrotic cell levels were measured by the flow cytometry analysis. Western blots were employed to assay BAX, Cytochrome C expression and apoptosis-related proteins. RESULTS P-HY-SDT induced THP-1 macrophage apoptosis. The levels of ROS were significantly increased in the SDT group, resulting in both mPTP opening and ΔΨm loss, which led to apoptosis. In addition, the translocation of BAX, release of Cytochrome C and the upregulated expression of apoptosis-related proteins after P-HY-SDT were observed, all of which were reversed by N-acetyl cysteine (NAC). CONCLUSIONS P-HY-SDT induced THP-1 macrophage apoptosis through the mitochondria-caspase pathway via ROS generation, the translocation of BAX and the release of Cytochrome C to regulate the mPTP opening.

UI MeSH Term Description Entries
D008264 Macrophages The relatively long-lived phagocytic cell of mammalian tissues that are derived from blood MONOCYTES. Main types are PERITONEAL MACROPHAGES; ALVEOLAR MACROPHAGES; HISTIOCYTES; KUPFFER CELLS of the liver; and OSTEOCLASTS. They may further differentiate within chronic inflammatory lesions to EPITHELIOID CELLS or may fuse to form FOREIGN BODY GIANT CELLS or LANGHANS GIANT CELLS. (from The Dictionary of Cell Biology, Lackie and Dow, 3rd ed.) Bone Marrow-Derived Macrophages,Monocyte-Derived Macrophages,Macrophage,Macrophages, Monocyte-Derived,Bone Marrow Derived Macrophages,Bone Marrow-Derived Macrophage,Macrophage, Bone Marrow-Derived,Macrophage, Monocyte-Derived,Macrophages, Bone Marrow-Derived,Macrophages, Monocyte Derived,Monocyte Derived Macrophages,Monocyte-Derived Macrophage
D008928 Mitochondria Semiautonomous, self-reproducing organelles that occur in the cytoplasm of all cells of most, but not all, eukaryotes. Each mitochondrion is surrounded by a double limiting membrane. The inner membrane is highly invaginated, and its projections are called cristae. Mitochondria are the sites of the reactions of oxidative phosphorylation, which result in the formation of ATP. They contain distinctive RIBOSOMES, transfer RNAs (RNA, TRANSFER); AMINO ACYL T RNA SYNTHETASES; and elongation and termination factors. Mitochondria depend upon genes within the nucleus of the cells in which they reside for many essential messenger RNAs (RNA, MESSENGER). Mitochondria are believed to have arisen from aerobic bacteria that established a symbiotic relationship with primitive protoeukaryotes. (King & Stansfield, A Dictionary of Genetics, 4th ed) Mitochondrial Contraction,Mitochondrion,Contraction, Mitochondrial,Contractions, Mitochondrial,Mitochondrial Contractions
D010569 Perylene A 20-carbon dibenz(de,kl)anthracene that can be viewed as a naphthalene fused to a phenalene or as dinaphthalene. It is used as fluorescent lipid probe in the cytochemistry of membranes and is a polycyclic hydrocarbon pollutant in soil and water. Derivatives may be carcinogenic. Perilene,Peri-Dinaphthalene,Peri Dinaphthalene
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D002470 Cell Survival The span of viability of a cell characterized by the capacity to perform certain functions such as metabolism, growth, reproduction, some form of responsiveness, and adaptability. Cell Viability,Cell Viabilities,Survival, Cell,Viabilities, Cell,Viability, Cell
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000083162 Mitochondrial Permeability Transition Pore A multiprotein inner mitochondrial complex which opens only under certain pathological conditions (e.g., OXIDATIVE STRESS) uncoupling the membrane leading to APOPTOSIS and MITOCHONDRIAL TRANSMEMBRANE PERMEABILITY-DRIVEN NECROSIS particularly in CARDIOMYOCYTES during MYOCARDIAL REPERFUSION INJURY. Mitochondrial Megachannel,Mitochondrial Permeability Transition Pore (mPTP),mPTP Protein
D014464 Ultrasonic Therapy The use of focused, high-frequency sound waves to produce local hyperthermia in certain diseased or injured parts of the body or to destroy the diseased tissue. Therapeutic Ultrasound,Ultrasound Therapy,Therapy, Ultrasonic,Therapies, Ultrasonic,Therapies, Ultrasound,Therapy, Ultrasound,Ultrasonic Therapies,Ultrasound Therapies,Ultrasound, Therapeutic
D017209 Apoptosis A regulated cell death mechanism characterized by distinctive morphologic changes in the nucleus and cytoplasm, including the endonucleolytic cleavage of genomic DNA, at regularly spaced, internucleosomal sites, i.e., DNA FRAGMENTATION. It is genetically programmed and serves as a balance to mitosis in regulating the size of animal tissues and in mediating pathologic processes associated with tumor growth. Apoptosis, Extrinsic Pathway,Apoptosis, Intrinsic Pathway,Caspase-Dependent Apoptosis,Classic Apoptosis,Classical Apoptosis,Programmed Cell Death,Programmed Cell Death, Type I,Apoptoses, Extrinsic Pathway,Apoptoses, Intrinsic Pathway,Apoptosis, Caspase-Dependent,Apoptosis, Classic,Apoptosis, Classical,Caspase Dependent Apoptosis,Cell Death, Programmed,Classic Apoptoses,Extrinsic Pathway Apoptoses,Extrinsic Pathway Apoptosis,Intrinsic Pathway Apoptoses,Intrinsic Pathway Apoptosis
D017382 Reactive Oxygen Species Molecules or ions formed by the incomplete one-electron reduction of oxygen. These reactive oxygen intermediates include SINGLET OXYGEN; SUPEROXIDES; PEROXIDES; HYDROXYL RADICAL; and HYPOCHLOROUS ACID. They contribute to the microbicidal activity of PHAGOCYTES, regulation of SIGNAL TRANSDUCTION and GENE EXPRESSION, and the oxidative damage to NUCLEIC ACIDS; PROTEINS; and LIPIDS. Active Oxygen Species,Oxygen Radical,Oxygen Radicals,Pro-Oxidant,Reactive Oxygen Intermediates,Active Oxygen,Oxygen Species, Reactive,Pro-Oxidants,Oxygen, Active,Pro Oxidant,Pro Oxidants,Radical, Oxygen

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