PARP1 and neoplasm: ↓ in A2780/HEY/HO8910 a/OVCAR3/SKOV3 cells Binds to E2F4 and represses PARP1 in HEY/SKOV3 cells Sponges miR-196a-5p to upregulate HOXA5 in primary tumor cells from HGSOV tissues and A2780/OVCAR3 cells Represses PARP1, growth and cisplatin resistance in SKOV3 tumors