ArticleTechnology in cancer research & treatment
piR-1919609 Is an Ideal Potential Target for Reversing Platinum Resistance in Ovarian Cancer.
Article in Technology in cancer research & treatment. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- P-Element-Induced Wimpy Testis (PIWI)-Interacting RNA-823/PIWIL1/DNMT3B/CDH1 as Potential Axis to Drive EMT, Stemness, and Tumor Aggressiveness in Ovarian Cancer Tissue Samples: An Integrative Computational and Clinical Insights.International journal of molecular sciences · 2026Article
- Targeting epigenetic regulators as a promising avenue to overcome cancer therapy resistance.Signal transduction and targeted therapy · 2025Review
- Targeting Regulatory Noncoding RNAs in Human Cancer: The State of the Art in Clinical Trials.Pharmaceutics · 2025Review
- Extracellular Vesicles in Ovarian Cancer: From Chemoresistance Mediators to Therapeutic Vectors.Biomedicines · 2024Review
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Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposePIWI-interacting RNAs (piRNAs) are a type of noncoding small RNA that can interact with PIWI-like RNA-mediated gene silencing (PIWIL) proteins to affect biological processes such as transposon silencing through epigenetic effects. Recent studies have found that piRNAs are widely dysregulated in tumors and associated with tumor progression and a poor prognosis. Therefore, this study aimed to investigate the effect of piR-1919609 on the proliferation, apoptosis, and drug resistance of ovarian cancer cells.
methodsIn this study, we used small RNA sequencing to screen and identify differentially expressed piRNAs in primary ovarian cancer, recurrent ovarian cancer, and normal ovaries. A large-scale verification study was performed to verify the expression of piR-1919609 in different types of ovarian tissue, including ovarian cancer tissue and normal ovaries, by RT-PCR and to analyze its association with the clinical prognosis of ovarian cancer. The expression of PIWILs in ovarian cancer was verified by RT-PCR, Western blotting and immunofluorescence. The effects of piR-1919609 on ovarian cancer cell proliferation, apoptosis and drug resistance were studied through in vitro and in vivo models.
results(1) piR-1919609 was highly expressed in platinum-resistant ovarian cancer tissues (p < 0.05), and this upregulation was significantly associated with a poor prognosis and a shorter recurrence time in ovarian cancer patients (p < 0.05). (2) PIWIL2 was strongly expressed in ovarian cancer tissues (p < 0.05). It was expressed both in the cytoplasm and nucleus of ovarian cancer cells. (3) Overexpression of piR-1919609 promoted ovarian cancer cell proliferation, inhibited apoptosis, and promoted tumor growth in nude mice. (4) Inhibition of piR-1919609 effectively reversed ovarian cancer drug resistance.
conclusionIn summary, we showed that piR-1919609 is involved in the regulation of drug resistance in ovarian cancer cells and might be an ideal potential target for reversing platinum resistance in ovarian cancer.
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