1. Sumoylation in p27kip1 via RanBP2 promotes cancer cell growth in cholangiocarcinoma cell line QBC939
   Jun Yang et al, 2017, BMC Molecular Biology CrossRef
2. Knockdown of UBE2I inhibits tumorigenesis and enhances chemosensitivity of cholangiocarcinoma via modulating p27kip1 nuclear export
   Jie Huang et al, 2023, Molecular Carcinogenesis CrossRef