Table 2. Oligonucleotides used in this study.

Definition	Sequence (5'-3')
si-hsa_circ_0006646#1	CAGAGGAGTGGAAAATATG
si-hsa_circ_0006646#2	AGAGGAGTGGAAAATATGA
si-hsa_circ_0006646#3	GAGGAGTGGAAAATATGAC
si-NC	TTCTCCGAACGTGTCACGT
sh-hsa_circ_0006646#1	CAGAGGAGTGGAAAATATGTCAAGAGCATATTTTCCACTCCTCTGTTTTTT
sh-hsa_circ_0006646#2	AGAGGAGTGGAAAATATGATCAAGAGTCATATTTTCCACTCCTCTTTTTTT
miR-665 mimic	ACCAGGAGGCUGAGGCCCCU
miR-665 inhibitor	ACCAGGAGGCUGAGGCCCCU

si, small interfering; sh, short hairpin; NC, negative control.