ArticleClinical and experimental medicine2025
Microvesicle inhibition enhances the therapeutic effects of ATRA in acute promyelocytic leukemia cells via changes in miRNAs: the promising antileukemic potential of imipramine.
Article in Clinical and experimental medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Cell line-specific antileukemic effects of imipramine: apoptosis, reactive oxygen species modulation and cytokine responses in human acute promyelocytic leukemia and chronic myelogenous leukemia cells.Molecular biology reports · 2026Article
- Circulating extracellular vesicle-microRNAs (EV-miRNAs) in leukemias and related disorders.Frontiers in medicine · 2026Review
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5 authors.
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Abstract
Extracellular vesicles (EVs) represent an essential role in cancer progression through intercellular communication. Therefore, the use of EV formation inhibitors could be a profitable therapeutic strategy in various types of cancer, including leukemia. Imipramine, a tricyclic antidepressant, can block EV formation by inhibiting acid sphingomyelinase. Additionally, other crucial players in cancer progression are microRNAs, which regulate molecular mechanisms at the post-transcriptional level. Here, to potentiate the therapeutic effect of all-trans retinoic acid (ATRA) in acute promyelocytic leukemia (APL), we investigated the effect of imipramine as a microvesicle inhibitor in combination with ATRA for the treatment of APL-derived NB4 cells. Our results declared that imipramine reduced the viability and metabolic activity of ATRA-treated NB4 cells after 48 h. In addition, flow cytometry results highlighted that imipramine induced cytotoxicity through G2/M phase arrest followed by apoptosis. Moreover, we discovered that the antileukemic effects of imipramine were associated with inhibiting microvesicle release and miRNA alteration. Based on bioinformatics methods, we predicted two miRNAs, including hsa-miR-4498 and hsa-miR-3156-5p, which target PML. Additionally, we selected miR-23a-5p, miR-19a-3p, and miR-181b-5p based on relevant studies and subsequently predicted their target genes. The real-time PCR results revealed that the expression level of these miRNAs increased after treatment with imipramine. Moreover, functional enrichment analysis of target genes demonstrated that these genes are involved in cancer-related pathways, including MAPK, FOXO, AMPK, and cellular senescence. Given the significant efficacy of imipramine in potentiating the anti-tumor effects of chemotherapeutic drugs, it can be considered as a potential treatment agent for APL.
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