Next-generation sequencing reveals a novel role of lysine-specific demethylase 1 in adhesion of rhabdomyosarcoma cells

被引:5
作者
Haydn, Tinka [1 ]
Kehr, Sarah [1 ]
Willmann, Dominica [2 ]
Metzger, Eric [2 ]
Schuele, Roland [2 ]
Fulda, Simone [1 ,3 ,4 ]
机构
[1] Goethe Univ Frankfurt, Inst Expt Canc Res Pediat, Frankfurt, Germany
[2] Univ Freiburg Med Ctr, Dept Urol, Freiburg, Germany
[3] German Canc Consortium DKTK, Partner Site Frankfurt, Frankfurt, Germany
[4] German Canc Res Ctr, Heidelberg, Germany
关键词
LSD1; rhabdomyosarcoma; cancer; PLASMINOGEN-ACTIVATOR; LSD1; INHIBITION; HDAC; DIFFERENTIATION; EXPRESSION; APOPTOSIS; CHILDREN; SARCOMA; GROWTH;
D O I
10.1002/ijc.32806
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Lysine-specific demethylase 1 (LSD1), a histone lysine demethylase with the main specificity for H3K4me2, has been shown to be overexpressed in rhabdomyosarcoma (RMS) tumor samples. However, its role in RMS biology is not yet well understood. Here, we identified a new role of LSD1 in regulating adhesion of RMS cells. Genetic knockdown of LSD1 profoundly suppressed clonogenic growth in a panel of RMS cell lines, whereas LSD1 proved to be largely dispensable for regulating cell death and short-term survival. Combined RNA and ChIP-sequencing performed to analyze RNA expression and histone methylation at promoter regions revealed a gene set enrichment for adhesion-associated terms upon LSD1 knockdown. Consistently, LSD1 knockdown significantly reduced adhesion to untreated surfaces. Importantly, precoating of the plates with the adhesives collagen I or fibronectin rescued this reduced adhesion of LSD1 knockdown cells back to levels of control cells. Using KEGG pathway analysis, we identified 17 differentially expressed genes (DEGs) in LSD1 knockdown cells related to adhesion processes, which were validated by qRT-PCR. Combining RNA and ChIP-sequencing results revealed that, within this set of genes, SPP1, C3AR1, ITGA10 and SERPINE1 also exhibited increased H3K4me2 levels at their promoter regions in LSD1 knockdown compared to control cells. Indeed, LSD1 ChIP experiments confirmed enrichment of LSD1 at their promoter regions, suggesting a direct transcriptional regulation by LSD1. By identifying a new role of LSD1 in the modulation of cell adhesion and clonogenic growth of RMS cells, these findings highlight the importance of LSD1 in RMS.
引用
收藏
页码:3435 / 3449
页数:15
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