Abstract
Circular RNAs (circRNAs) exert crucial regulatory effects in the pathogenesis of multiple tumors. This work aimed to probe into the role of circ_0000094 in T cell acute lymphoblastic leukemia (T-ALL). In this work, quantitative real-time polymerase chain reaction (qRT-PCR) was applied to quantify circ_0000094, miR-223-3p, and F-box and WD repeat domain containing 7 (FBW7) mRNA expressions in lymph node samples from T-ALL patients; Western blot was adopted to examine FBW7 protein expression in T-ALL cells; cell proliferation was detected by cell counting kit-8 (CCK-8) experiment; apoptosis was examined by flow cytometry; Transwell experiments were applied to assess T-ALL cell migration and invasion; the interactions among circ_0000094 and miR-223-3p, and miR-223-3p and FBW7 were validated by bioinformatics prediction, dual-luciferase reporter gene assay, and RNA immunoprecipitation experiment. We reported that, circ_0000094 expression was markedly reduced in T-ALL and circ_0000094 was predominantly located in the cytoplasm; gain-of-function and loss-of-function assays verified that circ_0000094 overexpression remarkably suppressed T-ALL cell proliferation, migration, and invasion, and enhanced apoptosis while knocking down circ_0000094 enhanced the malignant phenotypes of T-ALL cells; “rescue experiments” implied that miR-223-3p mimics partly reversed the inhibitory effects on the malignant phenotype of T-ALL cells due to the circ_0000094 up-regulation; circ_0000094 was proved to be a molecular sponge for miR-223-3p, and it could up-regulate the expression of FBW7 via repressing miR-223-3p expression. Taken together, it was concluded that circ_0000094 impedes T-ALL progression by modulating the miR-223-3p/FBW7 axis.
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The data used to support the findings of this study are available from the corresponding author upon request.
Change history
06 July 2021
A Correction to this paper has been published: https://doi.org/10.1007/s13577-021-00574-4
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We thank Hubei Yican Health Industry Co., Ltd. (Wuhan, China) for its linguistic assistance during the preparation of this manuscript.
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13577_2021_504_MOESM1_ESM.tif
Supplementary file1 (TIF 116 KB) Figure 1 (A-B) The T-ALL cells were treated with various concentrations of gamma-secretase inhibitors (GSIs) for 48 h. Then the viability of T-ALL cells was detected by CCK-8 assay. CCK-8, cell counting kit-8. All experiments were performed in triplicate. *** P < 0.001
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Hou, Y., Sun, J., Huang, J. et al. Circular RNA circRNA_0000094 sponges microRNA-223-3p and up-regulate F-box and WD repeat domain containing 7 to restrain T cell acute lymphoblastic leukemia progression. Human Cell 34, 977–989 (2021). https://doi.org/10.1007/s13577-021-00504-4
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DOI: https://doi.org/10.1007/s13577-021-00504-4