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- W4384493273 abstract "Circ_0000376 could promote non-small cell lung cancer (NSCLC) progression; however, the role of circ_0000376 in paclitaxel (PTX) resistance of NSCLC is still unknown.Quantitative real-time polymerase chain reaction (qRT-PCR) and western blot were applied for measuring circ_0000376, microRNA-1298-5p (miR-1298-5p), and karyopherin subunit alpha 4 (KPNA4) expression. The half inhibitory concentration (IC50) of PTX was assessed by cell counting kit-8 assay. 5-ethynyl-2'-deoxyuridine assay, wound healing assay, transwell assay, and flow cytometry were performed to measure the proliferation, migration, invasion, and apoptosis of cells. The regulatory mechanisms of circ_0000376, miR-1298-5p, and KPNA4 were validated by dual-luciferase reporter assay, RNA immunoprecipitation assay, and rescue experiments. Xenograft assay was used for the functional analysis of circ_0000376 in vivo.Circ_0000376 and KPNA4 expressions were upregulated, while miR-1298-5p expression was downregulated in PTX-resistant tissues and cells. Circ_0000376 depletion promoted PTX sensitivity and apoptosis, while suppressing the proliferation, migration, and invasion of PTX-resistant NSCLC cells. Furthermore, circ_0000376 could modulate KPNA4 expression by sponging miR-1298-5p. Rescue experiments showed that miR-1298-5p inhibition reversed the circ_0000376 depletion-mediated anticancer effects and PTX sensitivity. Moreover, miR-1298-5p inhibited PTX resistance and tumorigenesis of PTX-resistant cells, which were abolished by KPNA4 overexpression. In addition, circ_0000376 knockdown suppressed tumor growth and enhanced PTX sensitivity in vivo.Circ_0000376 facilitated PTX resistance and tumorigenesis of NSCLC by miR-1298-5p/KPNA4 axis, suggesting an underlying therapeutic strategy for NSCLC." @default.
- W4384493273 created "2023-07-18" @default.
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- W4384493273 date "2023-07-16" @default.
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- W4384493273 title "Circular <scp>RNA</scp> circ_0000376 promotes paclitaxel resistance and tumorigenesis of non‐small cell lung cancer via positively modulating <scp>KPNA4</scp> by sponging <scp>miR</scp>‐1298‐5p" @default.
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- W4384493273 doi "https://doi.org/10.1111/1759-7714.14994" @default.
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