AIRE is induced in oral squamous cell carcinoma and promotes cancer gene expression

Autoimmune regulator (AIRE) is a transcriptional regulator that is primarily expressed in medullary epithelial cells, where it induces tissue-specific antigen expression. Under pathological conditions, AIRE expression is induced in epidermal cells and promotes skin tumor development. This study aime...

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Veröffentlicht in:PloS one 2020-02, Vol.15 (2), p.e0222689-e0222689
Hauptverfasser: Nguyen, Chi Thi Kim, Sawangarun, Wanlada, Mandasari, Masita, Morita, Kei-Ichi, Harada, Hiroyuki, Kayamori, Kou, Yamaguchi, Akira, Sakamoto, Kei
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container_title PloS one
container_volume 15
creator Nguyen, Chi Thi Kim
Sawangarun, Wanlada
Mandasari, Masita
Morita, Kei-Ichi
Harada, Hiroyuki
Kayamori, Kou
Yamaguchi, Akira
Sakamoto, Kei
description Autoimmune regulator (AIRE) is a transcriptional regulator that is primarily expressed in medullary epithelial cells, where it induces tissue-specific antigen expression. Under pathological conditions, AIRE expression is induced in epidermal cells and promotes skin tumor development. This study aimed to clarify the role of AIRE in the pathogenesis of oral squamous cell carcinoma (OSCC). AIRE expression was evaluated in six OSCC cell lines and in OSCC tissue specimens. Expression of STAT1, ICAM1, CXCL10, CXCL11, and MMP9 was elevated in 293A cells stably expressing AIRE, and conversely, was decreased in AIRE-knockout HSC3 OSCC cells when compared to the respective controls. Upregulation of STAT1, and ICAM in OSCC cells was confirmed in tissue specimens by immunohistochemistry. We provide evidence that AIRE exerts transcriptional control in cooperation with ETS1. Expression of STAT1, ICAM1, CXCL10, CXCL11, and MMP9 was increased in 293A cells upon Ets1 transfection, and coexpression of AIRE further increased the expression of these proteins. AIRE coprecipitated with ETS1 in a modified immunoprecipitation assay using formaldehyde crosslinking. Chromatin immunoprecipitation and quantitative PCR analysis revealed that promoter fragments of STAT1, ICAM1, CXCL10, and MMP9 were enriched in the AIRE precipitates. These results indicate that AIRE is induced in OSCC and supports cancer-related gene expression in cooperation with ETS1. This is a novel function of AIRE in extrathymic tissues under the pathological condition.
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Under pathological conditions, AIRE expression is induced in epidermal cells and promotes skin tumor development. This study aimed to clarify the role of AIRE in the pathogenesis of oral squamous cell carcinoma (OSCC). AIRE expression was evaluated in six OSCC cell lines and in OSCC tissue specimens. Expression of STAT1, ICAM1, CXCL10, CXCL11, and MMP9 was elevated in 293A cells stably expressing AIRE, and conversely, was decreased in AIRE-knockout HSC3 OSCC cells when compared to the respective controls. Upregulation of STAT1, and ICAM in OSCC cells was confirmed in tissue specimens by immunohistochemistry. We provide evidence that AIRE exerts transcriptional control in cooperation with ETS1. Expression of STAT1, ICAM1, CXCL10, CXCL11, and MMP9 was increased in 293A cells upon Ets1 transfection, and coexpression of AIRE further increased the expression of these proteins. AIRE coprecipitated with ETS1 in a modified immunoprecipitation assay using formaldehyde crosslinking. 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genetics</topic><topic>Cell adhesion &amp; migration</topic><topic>Cell Line, Tumor</topic><topic>Chromatin</topic><topic>Chromatin Immunoprecipitation</topic><topic>Comparative analysis</topic><topic>Cooperation</topic><topic>Crosslinking</topic><topic>CXCL10 protein</topic><topic>CXCL11 protein</topic><topic>Dentistry</topic><topic>Drinking water</topic><topic>Epithelial cells</topic><topic>Ets-1 protein</topic><topic>Formaldehyde</topic><topic>Gelatinase B</topic><topic>Gene Expression</topic><topic>Genes</topic><topic>Genetic aspects</topic><topic>HEK293 Cells</topic><topic>Humans</topic><topic>Immunohistochemistry</topic><topic>Immunoprecipitation</topic><topic>Intercellular adhesion molecule 1</topic><topic>Keratin</topic><topic>Localization</topic><topic>Maxillofacial surgery</topic><topic>Medicine and Health Sciences</topic><topic>Mouth Neoplasms - genetics</topic><topic>Oral cancer</topic><topic>Oral squamous cell carcinoma</topic><topic>Pathogenesis</topic><topic>Pathology</topic><topic>Polymer crosslinking</topic><topic>Polymerase chain reaction</topic><topic>Precipitates</topic><topic>Promoter Regions, Genetic</topic><topic>Proteins</topic><topic>Proto-Oncogene Protein c-ets-1 - 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Under pathological conditions, AIRE expression is induced in epidermal cells and promotes skin tumor development. This study aimed to clarify the role of AIRE in the pathogenesis of oral squamous cell carcinoma (OSCC). AIRE expression was evaluated in six OSCC cell lines and in OSCC tissue specimens. Expression of STAT1, ICAM1, CXCL10, CXCL11, and MMP9 was elevated in 293A cells stably expressing AIRE, and conversely, was decreased in AIRE-knockout HSC3 OSCC cells when compared to the respective controls. Upregulation of STAT1, and ICAM in OSCC cells was confirmed in tissue specimens by immunohistochemistry. We provide evidence that AIRE exerts transcriptional control in cooperation with ETS1. Expression of STAT1, ICAM1, CXCL10, CXCL11, and MMP9 was increased in 293A cells upon Ets1 transfection, and coexpression of AIRE further increased the expression of these proteins. AIRE coprecipitated with ETS1 in a modified immunoprecipitation assay using formaldehyde crosslinking. Chromatin immunoprecipitation and quantitative PCR analysis revealed that promoter fragments of STAT1, ICAM1, CXCL10, and MMP9 were enriched in the AIRE precipitates. These results indicate that AIRE is induced in OSCC and supports cancer-related gene expression in cooperation with ETS1. This is a novel function of AIRE in extrathymic tissues under the pathological condition.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>32012175</pmid><doi>10.1371/journal.pone.0222689</doi><tpages>e0222689</tpages><orcidid>https://orcid.org/0000-0001-6894-6175</orcidid><oa>free_for_read</oa></addata></record>
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subjects AIRE Protein
Antigens
Autoimmunity
Biology and Life Sciences
Cancer
Cancer genetics
Carcinoma
Carcinoma, Squamous Cell - genetics
Cell adhesion & migration
Cell Line, Tumor
Chromatin
Chromatin Immunoprecipitation
Comparative analysis
Cooperation
Crosslinking
CXCL10 protein
CXCL11 protein
Dentistry
Drinking water
Epithelial cells
Ets-1 protein
Formaldehyde
Gelatinase B
Gene Expression
Genes
Genetic aspects
HEK293 Cells
Humans
Immunohistochemistry
Immunoprecipitation
Intercellular adhesion molecule 1
Keratin
Localization
Maxillofacial surgery
Medicine and Health Sciences
Mouth Neoplasms - genetics
Oral cancer
Oral squamous cell carcinoma
Pathogenesis
Pathology
Polymer crosslinking
Polymerase chain reaction
Precipitates
Promoter Regions, Genetic
Proteins
Proto-Oncogene Protein c-ets-1 - genetics
Research and Analysis Methods
Skin
Skin cancer
Squamous cell carcinoma
Stat1 protein
Supervision
Tissues
Tongue
Transcription
Transcription Factors - genetics
Transcriptional Activation
Transfection
Tumors
title AIRE is induced in oral squamous cell carcinoma and promotes cancer gene expression
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