α-fluoro-β-alanine functions as a β-arrestin1-biased ligand of S1PR2 to upregulate DPD expression in cancer cells - Mingyong Tan; Hanbing Shao; Xinan Zhang; Yuyao Cheng; Zhimeng Sun; Ming Yang; Siyuan Mu; Weishi Liang; Bo Han; Xinfeng Wu; Xiaohui Liu; Yong Hai; et al. (Proceedings of the National Academy of Sciences, 2026)