Fig. 1

Expression of circZNF532 in DR patients and high glucose-treated hRMECs. A The expression of circZNF532 in serum from DR patients (n = 23) and healthy controls (n = 23) was detected using qRT-PCR. B hRMECs were exposed to 5.5 mM glucose (normal glucose, NG) or 25 mM glucose (high glucose, HG) for different times, and circZNF532 level was measured using qRT-PCR. C The levels of circZNF532 and linear ZNF532 were examined by qRT-PCR after RNase R treatment. *P < 0.05