Abstract
Long non-coding RNAs (lncRNAs) and their role in competitive endogenous RNA (ceRNA) networks have emerged as fundamental debates in the biological processes of initiation and progression of cancer. This study aimed to identify and measure the expression levels of relevant ceRNA regulatory genes contributing to acute lymphoblastic leukemia (ALL). lncRNA H19 and BCL-2 mRNA were chosen based on in silico studies and their interactions with miR-326. Subsequently, the aforementioned coding/non-coding gene expression profiles were measured using qRT-PCR in 50 bone marrow samples, including 33 cases with pediatric ALL and 17 controls with no evidence of malignancy. lncRNA H19 was identified as an oncogenic factor which was noticeably increased in the newly diagnosed patients (P = 0.0019, AUC = 0.84) and negatively associated with miR-326 (r = −0.6, P = 0.02). Furthermore, a negative correlation was introduced between the transcriptional levels of miR-326 and the anti-apoptotic BCL-2 gene (r = −0.6, P = 0.028). The novel experimental and bioinformatic results achieved in this study may provide new insights into the molecular leukemogenesis of pediatric ALL.
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Acknowledgements
We would like to thank Dr. Alireza Moafi for kindly providing patients with bone marrow samples, and all patients, and their parents who consented to participate in the present study.
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Authors declare that none of them has any relationship with any governmental organization. This work was supported financially by a postgraduate research grant (2017) from the University of Isfahan (No. 96/29729) assigned to M.M.
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All bone marrow samples of patients and controls were collected with full written informed parent’s consent. The study was conducted in accordance with the Declaration of Helsinki, and permitted by the Ethics Committee of the University of Isfahan (agreement number IR.UI.REC.1397.131).
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Mofidi, M., Rahgozar, S. & Pouyanrad, S. Increased level of long non coding RNA H19 is correlated with the downregulation of miR-326 and BCL-2 genes in pediatric acute lymphoblastic leukemia, a possible hallmark for leukemogenesis. Mol Biol Rep 48, 1531–1538 (2021). https://doi.org/10.1007/s11033-021-06161-y
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DOI: https://doi.org/10.1007/s11033-021-06161-y