3 years ago

LSD1 modulates the non-canonical integrin β3 signaling pathway in non-small cell lung carcinoma cells

Sabine Merkelbach-Bruse, Martin Kerick, Stephan C. Schäfer, Julie George, Luka Ozretić, Iris Macheleidt, Jürgen Wolf, Bernd Timmermann, Priya Dalvi, Reinhard Buettner, Margarete Odenthal, So-Young Lim, Roman K. Thomas, Sandra Ortiz-Cuaran, Michal R. Schweiger
The epigenetic writer lysine-specific demethylase 1 (LSD1) is aberrantly upregulated in many cancer types and its overexpression correlates with poor survival and tumor progression. In this study, we analysed LSD1 function in non-small cell lung cancer adenocarcinomas. Expression profiling of 182 cases of lung adenocarcinoma proved a significant correlation of LSD1 overexpression with lung adenocarcinoma progression and metastasis. KRAS-mutated lung cancer cell clones were stably silenced for LSD1 expression. RNA-seq and comprehensive pathway analysis revealed, that genes related to a recently described non-canonical integrin β3 pathway, were significantly downregulated by LSD1 silencing. Hence, invasion and self-renewal capabilities were strongly decreased. Notably, this novel defined LSD1/integrin β3 axis, was also detected in human lung adenocarcinoma specimens. Furthermore, the linkage of LSD1 to an altered expression pattern of lung-lineage specific transcription factors and genes, which are involved in alveolar epithelial differentiation, was demonstrated. Thus, our findings point to a LSD1-integrin β3 axis, conferring attributes of invasiveness and tumor progression to lung adenocarcinoma.

Publisher URL: https://www.nature.com/articles/s41598-017-09554-x

DOI: 10.1038/s41598-017-09554-x

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