前列腺癌
SOX2
癌症研究
生物
HMGA2型
癌变
CD44细胞
神经内分泌分化
癌症干细胞
干细胞
前列腺
转录因子
癌症
细胞
细胞生物学
小RNA
基因
遗传学
作者
Jessica M. Lovnicki,Yu Gan,Tingting Feng,Yinan Li,Ning Xie,Chia-Hao Ho,Ahn R. Lee,Xufeng Chen,Lucia Nappi,Bo Han,Ladan Fazli,Jiaoti Huang,Martin Gleave,Xuesen Dong
摘要
Therapy-induced neuroendocrine prostate cancer (t-NEPC) is a highly aggressive subtype of prostate cancer with poor patient survival. Emerging evidence indicates that t-NEPC can develop when prostate adenocarcinoma cells acquire cancer stem-like cell signaling in the presence of androgen receptor inhibition, followed by redifferentiation toward neuroendocrine lineage and subsequent t-NEPC progression. Whether the stem-like signaling is controlled by the core pluripotency stem cell genes (e.g., LIN28 and SOX2) remains unknown. Here, we report that the transcription of the LIN28B isoform and SOX2 were co-upregulated in t-NEPC patient tumors, patient-derived xenografts, transgenic mice, and cell models. Immunohistochemistry validated that LIN28B and SOX2 protein expression were elevated in t-NEPC patient biopsies. Using prostate adenocarcinoma and t-NEPC cell models, we demonstrated that LIN28B induced a stem-like gene network, neuroendocrine biomarkers, and neuroendocrine cell morphology. LIN28B depletion by CRISPR inhibited t-NEPC tumorigenesis and xenograft growth. These LIN28B functions were mediated mainly through the suppression of let-7 miRNA expression, resulting in de-repression of the transcription factor HMGA2 and HMGA2-mediated SOX2 expression. This study revealed a mechanism by which t-NEPC can develop through the LIN28B/let-7/SOX2 axis that regulates a cancer cell stem-like gene network, highlighting LIN28B as a potential therapeutic target in t-NEPC.
科研通智能强力驱动
Strongly Powered by AbleSci AI