N6-methyladenosine-modified circPLPP4 sustains cisplatin resistance in ovarian cancer cells via PIK3R1 upregulation. - Li, Han; Lin, Run; Zhang, Yanna; Zhu, Yanni; Huang, Shuting; Lan, Jing; Lu, Nian; Xie, Chuanmiao; He, Shanyang; Zhang, Weijing (Molecular Cancer, 2024)