Dataset Information

MiR-22-3p Negatively Affects Tumor Progression in T-Cell Acute Lymphoblastic Leukemia.

ABSTRACT: T-cell acute lymphoblastic leukemia (T-ALL) is a rare, aggressive disease arising from T-cell precursors. NOTCH1 plays an important role both in T-cell development and leukemia progression, and more than 60% of human T-ALLs harbor mutations in components of the NOTCH1 signaling pathway, leading to deregulated cell growth and contributing to cell transformation. Besides multiple NOTCH1 target genes, microRNAs have also been shown to regulate T-ALL initiation and progression. Using an established mouse model of T-ALL induced by NOTCH1 activation, we identified several microRNAs downstream of NOTCH1 activation. In particular, we found that NOTCH1 inhibition can induce miR-22-3p in NOTCH1-dependent tumors and that this regulation is also conserved in human samples. Importantly, miR-22-3p overexpression in T-ALL cells can inhibit colony formation in vitro and leukemia progression in vivo. In addition, miR-22-3p was found to be downregulated in T-ALL specimens, both T-ALL cell lines and primary samples, relative to immature T-cells. Our results suggest that miR-22-3p is a functionally relevant microRNA in T-ALL whose modulation can be exploited for therapeutic purposes to inhibit T-ALL progression.

SUBMITTER: Saccomani V

PROVIDER: S-EPMC7408026 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature

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miR-22-3p Negatively Affects Tumor Progression in T-Cell Acute Lymphoblastic Leukemia.

Saccomani Valentina V Grassi Angela A Piovan Erich E Bongiovanni Deborah D Di Martino Ludovica L Minuzzo Sonia S Tosello Valeria V Zanovello Paola P

Cells 20200718 7

T-cell acute lymphoblastic leukemia (T-ALL) is a rare, aggressive disease arising from T-cell precursors. NOTCH1 plays an important role both in T-cell development and leukemia progression, and more than 60% of human T-ALLs harbor mutations in components of the NOTCH1 signaling pathway, leading to deregulated cell growth and contributing to cell transformation. Besides multiple NOTCH1 target genes, microRNAs have also been shown to regulate T-ALL initiation and progression. Using an established ...[more]

PMID: 32708470

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Dataset Information

MiR-22-3p Negatively Affects Tumor Progression in T-Cell Acute Lymphoblastic Leukemia.

Publications

miR-22-3p Negatively Affects Tumor Progression in T-Cell Acute Lymphoblastic Leukemia.

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