Exosomal circRNAs: The Key Role and Potential Therapeutic Target in Gastric Cancer.

A ring-stabilized endogenous non-coding RNA is called circular RNA (circRNA). Intercellular communication is mediated by exosomes, and circRNA is enriched and stabilized in exosomes. It has recently been demonstrated that cancer cells and tissues exhibit abnormal expression of exosomal circRNAs. By controlling angiogenesis, metabolism, metastasis, epithe-lial mesenchymal transition (EMT), tumor chemoresistance, immune evasion, and cell prolifera-tion, it may also have an impact on the development of different malignancies. Furthermore, ex-osomal circRNAs have strong tissue selectivity, stability, and other qualities that make them useful for diagnostic purposes. Consequently, exosomal circRNAs offer a wide range of poten-tial applications in the therapy of cancer and can be utilized as biomarkers and anti-tumor tar-gets. The features and purposes of circRNAs and exosomes are briefly discussed in this review, which also methodically explains the function and possible mechanism of the function of exo-somal circRNA in the onset of gastric cancer (GC). Furthermore, their clinical uses as targets and biomarkers for gastric cancers are also summarized and discussed in this work.