Role of miRNA‑214‑3p in cancer (Review).

microRNA‑214‑3p (miRNA‑214‑3p) can be mapped to the human chromosome 1q24.3 and is ~22 nucleotides in length. It has been garnering considerable attention due to its aberrant expression profile in various different types of cancer and its apparent role in regulating tumor progression. In malignant tumors, miRNA‑214‑3p can serve as a tumor suppressor or oncogene. This can be mediated by mainly inhibiting the expression of target genes by binding to the 3'‑untranslated region of target mRNAs, thereby regulating multiple downstream cellular processes, such as cell proliferation, metastasis, invasion and apoptosis. However, the role of miRNA‑214‑3p in cancer remains unclear. Therefore, in the present review, the role of miRNA‑214‑3p in cancer was summarized, whilst analyzing its potential as a biomarker for cancer diagnosis, prognosis and response to treatment. In addition, the present review evaluates its effects on sensitivity to chemotherapy, targeted therapy and radiotherapy. The current proposed strategies for the systemic delivery of miRNA‑214‑3p in cancer were also discussed.