Journal
MOLECULAR THERAPY-NUCLEIC ACIDS
Volume 25, Issue -, Pages 1-10Publisher
CELL PRESS
DOI: 10.1016/j.omtn.2021.04.020
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Funding
- Ministry of Science and Technology, Taiwan [MOST 108-2314-B-039-060, MOST 108-2622-E-039-005-CC2, MOST 109-2622-E-039-004-CC2, MOST 109-2628-E-039-001-MY3, MOST 109-2327-B-039-002, MOST 108-2628-B-039-003, MOST 109-2628-B-039-006, 109-2314-B-182-078-MY3, 109-2628-B-182-008]
- China Medical University, Taiwan [CMU108-Z-02]
- China Medical University Hospital, Taiwan [DMR-109-055, DMR-109-223, DMR-110-072, DMR-109-206]
- Chang Gung Memorial Hospital at Linkou [CMRPD1J0321, CMRPD1H0473]
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The study found that both individual miRNA mimics and the combination of the three miRNA mimics were effective in inhibiting tumor growth and progression, with the combination being more effective than the single miRNA mimics. In lung cancer animal models, the combined miRNA mimics provided significant therapeutic effects in terms of reduced tumor volume and metastasis nodules.
Lung adenocarcinoma (LUAD), the most common histological type of non-small cell lung cancer, is one of the most malignant and deadly diseases. Current treatments for advanced LUAD patients are far from ideal and require further improvements. Here, we utilized a systematic integrative analysis of LUAD microRNA sequencing (miRNA-seq) and RNA-seq data from The Cancer Genome Atlas (TCGA) to identify clinically relevant tumor suppressor miRNAs. Three miRNA candidates (miR-195-5p, miR-101-3p, and miR-338-5p) were identified based on their differential expressions, survival significance levels, correlations with targets, and an additive effect on survival among them. We further evaluated mimics of the three miRNAs to determine their therapeutic potential in inhibiting cancer progression. The results showed not only that each of the miRNA mimics alone but also the three miRNA mimics in combination were efficient at inhibiting tumor growth and progression with equal final concentrations, meaning that the three miRNA mimics in combination were more effective than the single miRNA mimics. Moreover, the combined miRNA mimics provided significant therapeutic effects in terms of reduced tumor volume and metastasis nodules in lung tumor animal models. Hence, our findings show the potential of using the three miRNAs in combination to treat LUAD patients with poor survival outcomes.
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