Oncology reports
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Chromatin assembly factor 1 subunit B (CHAF1B) participates in DNA synthesis and repair. High CHAF1B expression has been associated with a poor prognosis in several types of cancers. However, no study has evaluated the clinical significance and biological function of CHAF1B in non‑small cell lung cancer (NSCLC). ⋯ In vivo studies demonstrated that CHAF1B knockdown inhibited the growth of transplanted tumours. Furthermore, our results revealed that the mechanism by which CHAF1B induced apoptosis was mediated by the activation of the p53‑dependent apoptotic signalling pathway (BAK/Bcl‑2/caspase‑3) in 95‑D cells. These data indicated that CHAF1B plays an important role in tumourigenesis and may be a therapeutic molecular target to counter NSCLC progression.
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MicroRNA‑144 suppresses aggressive phenotypes of tumor cells by targeting ANO1 in colorectal cancer.
The aim of the present study was to research the mechanism of action of microRNA‑144 (miR‑144) in colorectal cancer (CRC) and its role in tumor progression. It was demonstrated that miR‑144 was downregulated and anoctamin 1 (ANO1) expression was upregulated in CRC. The expression of ANO1 was negatively associated with that of miR‑144 in CRC. ⋯ It was verified that upregulation of ANO1 expression activated the epidermal growth factor receptor/extracellular signal‑regulated kinase signaling pathway. It was also demonstrated that miR‑144 exerts strong tumor‑inhibiting effects by targeting ANO1. Therefore, miR‑144 may have potential as a prognostic marker or therapeutic target for CRC.
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The present study was performed with the aim of understanding the mechanisms of pathogenesis and providing novel biomarkers for cervical cancer by constructing a regulatory circular (circ)RNA‑micro (mi)RNA‑mRNA network. Using an adjusted P-value of <0.05 and an absolute log value of fold-change >1, 16 and 156 miRNAs from GSE30656 and The Cancer Genome Atlas (TCGA), 5,321 mRNAs from GSE63514, 4,076 mRNAs from cervical squamous cell carcinoma and endocervical adenocarcinoma (from TCGA) and 75 circRNAs from GSE102686 were obtained. Using RNAhybrid, Venn and UpSetR plot, 12 circRNA‑miRNA pairs and 266 miRNA‑mRNA pairs were obtained. ⋯ The 5 circRNAs (hsa_circRNA_000596, hsa_circRNA_104315, hsa_circRNA_400068, hsa_circRNA_101958 and hsa_circRNA_103519) may function as competing endogenous RNAs and serve critical roles in cervical cancer. In addition, cytarabine may produce similar effects to gemcitabine and may be an optional chemotherapeutic drug for treating cervical cancer by targeting rs5030743 and rs1130609 or other similar SNPs. However, the specific mechanism of action should be confirmed by further study.