Targeting RBPMS selectively eliminates FOXO1-mediated stem cell signatures in mouse models of acute myeloid leukemia

作者：Ping Liu, Sulin Zhang, Bing-Yi Chen, Binhe Chang, Y Jiang, Li X, Xiya Li, Xinchi Chen, Zi-juan Li, Xiaoning Wang, Xiaoning Wang, Chun-Hui Xu, Na Liu, Na Liu, Yuanyuan Jia, Pengcheng Yu, Yong Wang, Li-Juan Zong, Cheng-Long Hu, Hui Hou, Duanhua Cao, Xutong Li, Xutong Li, Chu-Han Deng, Yi-Yi Ren, Mu-ying Zhao, Xinyi Ma, Rongrong Cui, Dan Teng, Miao Chen, Roujia Wang, Jiacheng Jin, Shi-yu Jiang, Xiaojing Yan, Kai Xue, Qunling Zhang, Jianfeng Li, Enyong Dai, Shuhong Shen, Zhikai Wang, Xueshi Ye, Jin Zhang, Yu Liu, Wenguo Cui, Min Lu, Wei-Li Zhao, Chun-Kang Chang, Sai-Juan Chen, Zhu Chen, Sai-Juan Chen, Mingyue Zheng, Xiao-Jian Sun, Lan Wang · 发表于：Science Translational Medicine · 年份：2026 · DOI：10.1126/scitranslmed.adv8951 · 被引用次数：1 · 研究领域：FOXO transcription factor regulation、RNA Research and Splicing、PARP inhibition in cancer therapy

Leukemia is a malignant tumor with a high recurrence rate and poor prognosis for patients. Thus, there is an urgent need to explore new therapeutic targets that play critical roles in leukemogenesis but have little effect on normal hematopoietic cells. Here, we show that RNA binding protein with multiple splicing (RBPMS), which is highly expressed in acute myeloid leukemia (AML) and associated with poor prognosis of AML, plays critical roles in leukemogenesis. Our study shows that inhibition of RBPMS inhibits self-renewal of leukemia-initiating cells (LICs) and leukemia development but has little effect on normal hematopoiesis. Mechanistically, RBPMS recruits the N 6 -methyladenosine (m 6 A) reader insulin-like growth factor 2 mRNA binding protein 3 (IGF2BP3), which promotes the stability of the forkhead box O1 ( FOXO1 ) mRNA in an m 6 A-dependent manner. Moreover, RBPMS contributes to the progression of leukemia by directly binding to FOXO1 and promoting FOXO1-regulated glycolysis. Overexpression of FOXO1 has been shown to reverse RBPMS inhibition–induced phenotypes in both leukemic cells and mouse models. We also designed a specific inhibitor of RBPMS that has therapeutic effects in AML patient-derived xenograft (PDX) models. We therefore highlight RBPMS as a promising drug target for leukemia therapy.