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Enhancement of apoptosis by sonodynamic therapy with protoporphyrin IX in isolate sarcoma 180 cells. 2008

Xiao Bing Wang, and Quan Hong Liu, and Pan Wang, and Kun Zhang, and Wei Tang, and Bao Lu Wang
College of Life Sciences, Shaanxi Normal University, Xi'an, China.

This study was to investigate whether the apoptosis in isolate sarcoma 180 (S180) cells could be enhanced by ultrasound in the presence of protoporphyrin IX (PPIX) and also to evaluate the underlying biologic mechanism. S180 cells were exposed to ultrasound for 30 seconds' duration, at the frequency of 2.2 MHz and an acoustical power of 3 W/cm(2) with 120 microM of PPIX. Cell apoptosis was evaluated based on the morphologic changes at different incubation times after sonication. Our results showed that the apoptosis in S180 tumor cells were induced by exposure, and the rate of apoptosis rose gradually with a longer incubation time. Our results also showed that changes in Fas protein expression were correlated with the development of apoptosis. The activities of caspase-8 and -3 were apparently upregulated by apoptosis, and the death substrate (PARP) was cleaved to active segments in a time-dependent manner. These results indicated that PPIX-mediated sonodynamic effect could exert its antitumor effect by triggering apoptosis in S180 cells through a Fas-mediated signal transduction pathway.

UI MeSH Term Description Entries
D008813 Mice, Inbred ICR An inbred strain of mouse that is used as a general purpose research strain, for therapeutic drug testing, and for the genetic analysis of CARCINOGEN-induced COLON CANCER. Mice, Inbred ICRC,Mice, ICR,Mouse, ICR,Mouse, Inbred ICR,Mouse, Inbred ICRC,ICR Mice,ICR Mice, Inbred,ICR Mouse,ICR Mouse, Inbred,ICRC Mice, Inbred,ICRC Mouse, Inbred,Inbred ICR Mice,Inbred ICR Mouse,Inbred ICRC Mice,Inbred ICRC Mouse
D011524 Protoporphyrins Porphyrins with four methyl, two vinyl, and two propionic acid side chains attached to the pyrrole rings. Protoporphyrin IX occurs in hemoglobin, myoglobin, and most of the cytochromes.
D002469 Cell Separation Techniques for separating distinct populations of cells. Cell Isolation,Cell Segregation,Isolation, Cell,Cell Isolations,Cell Segregations,Cell Separations,Isolations, Cell,Segregation, Cell,Segregations, Cell,Separation, Cell,Separations, Cell
D004789 Enzyme Activation Conversion of an inactive form of an enzyme to one possessing metabolic activity. It includes 1, activation by ions (activators); 2, activation by cofactors (coenzymes); and 3, conversion of an enzyme precursor (proenzyme or zymogen) to an active enzyme. Activation, Enzyme,Activations, Enzyme,Enzyme Activations
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012510 Sarcoma 180 An experimental sarcoma of mice. Sarcoma 180, Crocker,Crocker Sarcoma 180
D014465 Ultrasonics A subfield of acoustics dealing in the radio frequency range higher than acoustic SOUND waves (approximately above 20 kilohertz). Ultrasonic radiation is used therapeutically (DIATHERMY and ULTRASONIC THERAPY) to generate HEAT and to selectively destroy tissues. It is also used in diagnostics, for example, ULTRASONOGRAPHY; ECHOENCEPHALOGRAPHY; and ECHOCARDIOGRAPHY, to visually display echoes received from irradiated tissues. Ultrasonic
D016650 Fluorescein-5-isothiocyanate Fluorescent probe capable of being conjugated to tissue and proteins. It is used as a label in fluorescent antibody staining procedures as well as protein- and amino acid-binding techniques. FITC,5-Isothiocyanatofluorescein,Fluorescein (5 or 6)-Isothiocyanate,Fluorescein-5-isothiocyanate Hydrochloride,5 Isothiocyanatofluorescein,Fluorescein 5 isothiocyanate,Fluorescein 5 isothiocyanate Hydrochloride,Hydrochloride, Fluorescein-5-isothiocyanate
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
D017304 Annexin A5 A protein of the annexin family isolated from human PLACENTA and other tissues. It inhibits cytosolic PHOSPHOLIPASE A2, and displays anticoagulant activity. Annexin V,Placental Anticoagulant Protein I,Anchorin CII,Calphobindin I,Endonexin II,Lipocortin V,Lipocortin-V

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