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Association of the long non-coding RNA MALAT1 with the polycomb repressive complex pathway in T and NK cell lymphoma.

 Soo Hee Kim  ;  Se Hoon Kim  ;  Woo Ick Yang  ;  Soo Jeong Kim  ;  Sun Och Yoon 
 ONCOTARGET , Vol.8(19) : 31305-31317, 2017 
Journal Title
Issue Date
Adult ; Aged ; Biomarkers ; Bone Marrow/pathology ; Cell Line, Tumor ; Female ; Gene Expression ; Gene Knockdown Techniques ; Humans ; Immunohistochemistry ; Kaplan-Meier Estimate ; Lymphoma, Extranodal NK-T-Cell/genetics* ; Lymphoma, Extranodal NK-T-Cell/metabolism* ; Lymphoma, Extranodal NK-T-Cell/mortality ; Lymphoma, Extranodal NK-T-Cell/pathology ; Male ; Middle Aged ; Neoplasm Staging ; Polycomb-Group Proteins/metabolism* ; Prognosis ; RNA, Long Noncoding/genetics* ; Signal Transduction*
MALAT1 ; T and NK cell lymphomas ; long non-coding RNA ; polycomb repressive complex
Recently, various long non-coding RNAs (lncRNAs) have been reported to have significant therapeutic or prognostic value. However, the expression of lncRNAs has not been investigated in T and NK cell lymphoma. Thus, we evaluated the biological and prognostic role of lncRNAs related to the polycomb repressive complex (PRC) and PRC markers in tissue samples and cell lines of T and NK cell lymphoma. Among the tested lncRNAs, MALAT1 was most highly expressed in clinical samples and cell lines. High expression of MALAT1 as well as BMI1 was related to poor prognosis in patients with mature T cell lymphoma. In the tissue samples, BMI1 expression showed a positive correlation with EZH2, SUZ12, H3K27me3, and MALAT1. Multiple linear regression analysis showed that BMI1 expression was independently associated with H3K27me3. Direct binding of MALAT1 to the PRC2 components (EZH2 and SUZ12) was observed in a T cell lymphoma cell line; however, no direct binding of MALAT1 with H3K27me3 and BMI1 (a PRC1 component) was observed.In T and NK cell lymphomas, MALAT1 was related to poor prognosis. MALAT1 directly binds to EZH2 and SUZ12, and BMI1 activation may be induced possibly through H3K27me3.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Pathology (병리학교실) > 1. Journal Papers
Yonsei Authors
Kim, Se Hoon(김세훈) ORCID logo https://orcid.org/0000-0001-7516-7372
Kim, Soo Jeong(김수정) ORCID logo https://orcid.org/0000-0001-8859-3573
Yang, Woo Ick(양우익) ORCID logo https://orcid.org/0000-0002-6084-5019
Yoon, Sun Och(윤선옥) ORCID logo https://orcid.org/0000-0002-5115-1402
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