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Effects of fucosylation inhibitors on ATRA differentiation in myeloid leukemia cells

ABSTRACT: Differentiation therapy with all-trans retinoic acid (ATRA) is well established for acute promyelocytic leukemia (APL). However, the narrow application and tolerance development of ATRA remain to be improved. In this study, we challenged glycosylation inhibitor to obtain better efficiency than ATRA alone. As a result, we found that the combination of fucosylation inhibitor 6-alkynylfucose (6AF) with ATRA have profound effect for differentiation, shown by expression changes of differentiation markers CD11b, CD11c, with significant morphological change in NB4 and HL-60 cells. From lectin blot assay, we found that ATRA or 6AF alone could decrease core fucosylation, the combination of these two agents efficiently decreases the expression of core fucosylation. To reveal molecular mechanisms to reveal 6AF effect for ATRA induced differentiation, we next performed microarray analysis using NB4 cells. From pathway analysis using DAVID software, we found that C-type lectin receptor (CLR) signaling pathway was enriched as high significance. From real time PCR analysis, using NB4 and HL-60 cells, FcRI, CLEC6A, CASP1, IL-1, EGR2/3, the components of CLR, and Akt, were indeed upregulated by 6AF in ATRA induced differentiation. These suggest that the involvement of CLR signaling pathway in 6AF effect of ATRA induced differentiation.

ORGANISM(S): Homo sapiens

PROVIDER: GSE234103 | GEO | 2023/06/08

REPOSITORIES: GEO

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