Federzoni, Elena; Gloor, Severin; Jin, Jing; Krauer, Deborah; Fey, Martin; Torbett, Bruce E; Tschan, Mario (2015). Linking the SUMO protease SENP5 to neutrophil differentiation of AML cells. Leukemia research reports, 4(1), pp. 32-35. Elsevier 10.1016/j.lrr.2015.04.002
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In an mRNA profiling screen performed to unveil novel mechanisms of leukemogenesis, we found that the sentrin-specific protease 5 (SENP5) was significantly repressed in clinical acute myeloid leukemia when compared to healthy neutrophil samples. SENP5 is an enzyme that targets and cleaves small ubiquitin-like modifier (SUMO) residues from SUMOylated proteins. Further investigation with AML neutrophil differentiation cell models showed increased SENP5 expression upon induction of differentiation; in contrast, knocking down SENP5 resulted in significantly attenuated neutrophil differentiation. Our results support a new role of SENP5 in AML pathology, and in particular in the neutrophil differentiation of myeloid leukemic cells.
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