Fig. 1
From: CircRNAs in anticancer drug resistance: recent advances and future potential
Biogenesis of circRNAs. a Classification of circRNAs. CircRNAs can be divided into ecircRNAs, EIciRNAs and ciRNAs by their composition. b Functions of circRNAs. CircRNAs can regulate gene transcription as their parental genes do in the nucleus. CircRNAs can act as miRNA sponges, interact with proteins as protein scaffolds or decoys and, under certain circumstances, be translated in the cytoplasm