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Title :Evidence for an association between increased oxidative stress and derangement of FOXO1 signaling in tumorigenesis of a cellular angiofibroma with monoallelic 13q14 : a case report
Authors :Arakaki, Kazunari
Chinen, Katsuya
Kamiya, Masuzo
Tanabe, Yasuka
Tawata, Natsumi
Ikehara, Fukino
Uehara, Karina
Shimabukuro, Hiroichi
Kinjo, Takao
Issue Date :1-Dec-2014
Abstract :Cellular angiofibroma (CAF) is a rare soft tissue tumor characterized by random arrangement of spindle tumor cells in the stroma with short collagen bundles and thick- and hyalinized small vessels. CAFs share histological characteristics with spindle cell lipomas and mammary type myofibroblastomas. Because these tumors harbor monoallelic 13q14, common genetic and molecular mechanism for tumorigenesis is presumed. In this study, we reported a case of CAF in a 69-year-old man with monoallelic 13q14. Immunohistochemical analysis revealed that FOXO1, which is located in chromosome 13q14, was not expressed in the tumor. We also detected oxidative stress markers and found p38 MAPK activation, which is often induced by cellular stressors such as reactive oxygen species (ROS). Because FOXO1 induces the expression of genes encoding enzymes that generate antioxidants, oxidative stress induced by loss of FOXO1 expression may be common among CAFs, spindle cell lipomas, and mammary type myofibroblastomas.
Type Local :雑誌掲載論文
ISSN :1936-2625
Publisher :e-Century Publishing Corporation
URI :http://hdl.handle.net/20.500.12000/46329
Citation :International Journal of Clinical and Experimental Pathology Vol.7 no.12 p.8972 -8979
Appears in Collections:Peer-reviewed Journal Articles (Faculty of Medicine)

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