Table I.

Primer and oligonucleotide sequences used in the present study.

Primers/oligonucleotides	Sequence (5′-3′)
circHIPK3 forward	TATGTTGGTGGATCCTGTTCGGCA
circHIPK3 reverse	TGGTGGGTAGACCAAGACTTGTGA
HIPK3 forward	TGGAGACTGGGGGAAGATGA
HIPK3 reverse	CACACTAACTGGCTGAGGGG
HDAC4 forward	TCAGACATCTTTGGGAAGGG
HDAC4 reverse	CAACCTCCATCTTGCCTTGT
GAPDH forward	GTCAAGGCTGAGAACGGGAA
GAPDH reverse	AAATGAGCCCCAGCCTTCTC
miR-637 forward	ACUGGGGGCUUUCGGGCUCUGCGU
miR-637 reverse	ACGCAGAGCCCGAAAGCCCCCAGU
U6 forward primer	CTCGCTTCGGCAGCACA
U6 reverse primer	AACGCTTCACGAATTTGCGT
sicircHIPK3_1 sense	UGGCCUCACAAGUCUUGGU
sicircHIPK3_1 antisense	ACCAAGACUUGUGAGGCCAUA
sicircHIPK3_2 sense	GGUACUACAGGUAUGGCCUTT
sicircHIPK3_2 antisense	AGGCCAUACCUGUAGUACCGA
siHDAC4 sense	GAAAAGGUUUUACAGCAAATT
siHDAC4 antisense	UUUGCUGUAAAACCUUUUCTG
miR-637 mimic	ACUGGGGGCUUUCGGGCUCUGCGU
miR-637 inhibitor	ACGCAGAGCCCGAAAGCCCCCAGU

circ, circular RNA; HDAC4, histone deacetylase 4; HIPK3, homeodomain interacting protein kinase 3; miR-637, microRNA-637; si, small interfering RNA.