TABLE 1.

CircRNAs involved in muscle development and their function.

circRNAs	Parental gene	Organism	Biological roles	Target miRNA(s)	miRNAs target	References
circ-ZNF609	ZNF609	Homo sapiens	Inhibits differentiation, promotes proliferation; can be translated	miR-194-5p	BCLAF1	Legnini et al., 2017
circLMO7	LMO7	Bovine	Inhibits differentiation, promotes proliferation of primary bovine myoblasts and protects them from apoptosis	miR-378a-3p	HDAC4	Wei et al., 2016
circFUT10	FUT10	Cattle	Reduces proliferation and facilitates differentiation of bovine myoblasts	miR-133a	SRF	Li et al., 2018
circSNX29	SNX29	Bovine	Promote myoblast differentiation and inhibit cell proliferation	miR-744	Wnt5a CaMKIIδ and Ca2+	Peng et al., 2019
circFGFR4	FGFR4	Bovine	Promote cell differentiation	miR-107	WNT3A	Li et al., 2018
circHUWE1	HECT, UBA and WWE	Bovine	Promotes myoblast proliferation and inhibits differentiation	miR-29b	AKT3	Yue et al., 2020
bta_circ_03789_1, bta_circ_05453_1	ND	Cattle	May regulate the IGF-IR gene by regulating the miRNAs associated with the longissimus dorsi muscle, and finally regulate muscle development	miR-133b and miR-664a	IGF-IR	Yan et al., 2020
circTTN	TTN	Bovine	Promoted proliferation and differentiation	miR-432	IGF-II, PI3K, AKT	Wang et al., 2019
circ776	ND	Sheep	Involved in muscle cell development and signaling pathway	miR-208	ND	Cao et al., 2018
circ_0001573, circ_0001554, circ_0013564	ND	Pig	Regulation of muscle fiber transformation through mi-499-5p	miR-499-5p	KCNQ1, MRAS and SERTM1	Li B. et al., 2020
CDR1as	Human X Chromosome	Goat	Promotes myoblast differentiation	miR-7, miR-1290, miR-876-5p, miR-135a	IGF-1R	Sun et al., 2017

ND, not determined.