Abstract
MicroRNAs (miRNAs) reportedly play significant roles in the progression of various cancers and hold huge potential as both diagnostic tools and therapeutic targets. Given the ongoing uncertainty surrounding the precise functions of several miRNAs in cholangiocarcinoma (CCA), this research undertakes a comprehensive analysis of CCA data sourced from Gene Expression Omnibus (GEO) and The Cancer Genome Atlas (TCGA) databases. The present study identified a novel miRNA, specifically miR-26b-3p, which exhibited prognostic value for individuals with CCA. Notably, miR-26b-3p was upregulated within CCA samples, with an inverse correlation established with patient prognosis (Hazard Ratio = 8.19, p = 0.018). Through a combination of functional enrichment analysis, analysis of the LncRNA-miR-26b-3p-mRNA interaction network, and validation by qRT PCR and western blotting, this study uncovered the potential of miR-26b-3p in potentiating the malignant progression of CCA via regulation of essential genes (including PSMD14, XAB2, SLC4A4) implicated in processes such as endoplasmic reticulum (ER) stress and responses to misfolded proteins. Our findings introduce novel and valuable insights that position miR-26b-3p-associated genes as promising biomarkers for the diagnosis and treatment of CCA.
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The data generated and analyzed during the current study are available from the corresponding author on reasonable request.
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Funding
This work was supported by the National Natural Science Foundation of China, 81802897 and 81901943; the Natural Science Foundation of Guangdong Province, 2021A1515011156, 2021A1515012493; the Operating Foundation of Guangdong Provincial Key Laboratory of Liver Disease Research, 2020B1212060019; the Guangzhou Basic and Applied Basic Research Foundation, 202102020237 and Guangzhou Basic and Applied Basic Research Project Co-funded by Municipal Schools (institutes), 2023A03J0727. Science and Technology Project of Guangzhou, SL2024A03J01216. Scientific Reserch Project of Dongguan Binhaiwan Central Hospital, 2021001.
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Conception and design: Rong Li, Xijing Yan, Kunpeng Hu, Xin Sui. Administrative support: Rong Li. Provision of study materials or patients: Zhongying Hu, Jinliang Liang, Xuejiao Li, Jiao Gong, Jun Zheng. Collection and assembly of data: Rong Li, Xijing Yan, Zhongying Hu, Jinliang Liang. Data analysis and interpretation: Rong Li, Xijing Yan, Kunpeng Hu, Xin Sui, Zhongying Hu, Jinliang Liang, Jiao Gong, Jun Zheng. Manuscript writing: All authors.
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Our research was approved by the Ethics Committee of the Third Affiliated Hospital of Sun Yat-sen University. All CCA data involved in this research were retrieved from the online databases (NCBI GEO DataSets and TCGA) which could be confirmed that all written informed consent had already been obtained and the data acquisition were followed the related data access policy and published guidelines.
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Yan, X., Hu, Z., Li, X. et al. Systemic analysis of the prognostic significance and interaction network of miR-26b-3p in cholangiocarcinoma. Appl Biochem Biotechnol (2023). https://doi.org/10.1007/s12010-023-04753-x
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DOI: https://doi.org/10.1007/s12010-023-04753-x