Huang Wei, Xu Feiqiang, Xu Jichuan, Quan Gang, Zhang Shihang, Guo Mengmeng, Xiao Feng, Jiang Jianxin
Department of Hepatobiliary Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang, China.
School of Clinical Medicine, Guizhou Medical University, Guiyang, China.
Cancer Sci. 2025 Sep;116(9):2427-2443. doi: 10.1111/cas.70134. Epub 2025 Jul 6.
Paired-related homeobox transcription factor 2 (PRRX2) belongs to the subfamily of homeobox genes and has been implicated as an oncogene in numerous cancer types, yet its role in pancreatic cancer requires further investigation. The aim of this study was to investigate the involvement of PRRX2 in pancreatic cancer progression. Bioinformatics analysis revealed that PRRX2, a transcription factor associated with senescence, was significantly upregulated in pancreatic cancer, and its heightened expression correlated with poor prognosis. Knockdown of PRRX2 led to an increased proportion of senescent cells and diminished proliferative, invasive, and metastatic capabilities, whereas PRRX2 overexpression yielded opposite effects. Subsequent experiments demonstrated that PRRX2 directly enhanced the transcription of GLI2, subsequently activating the hedgehog pathway, thereby inhibiting tumor senescence and promoting cell proliferation, invasion, and metastasis. Hedgehog pathway inhibitors or silencing of GLI2 partially reversed these effects. Additional replication experiments revealed that senescence inducers could partially counteract the impact of PRRX2 on pancreatic cancer. In conclusion, PRRX2 may serve as a potential therapeutic target for pancreatic cancer treatment.
配对相关同源框转录因子2(PRRX2)属于同源框基因亚家族,在多种癌症类型中被认为是一种癌基因,但其在胰腺癌中的作用仍需进一步研究。本研究旨在探讨PRRX2在胰腺癌进展中的作用。生物信息学分析显示,PRRX2是一种与衰老相关的转录因子,在胰腺癌中显著上调,其高表达与预后不良相关。敲低PRRX2导致衰老细胞比例增加,增殖、侵袭和转移能力减弱,而PRRX2过表达则产生相反的效果。随后的实验表明,PRRX2直接增强GLI2的转录,随后激活刺猬信号通路,从而抑制肿瘤衰老并促进细胞增殖、侵袭和转移。刺猬信号通路抑制剂或GLI2沉默可部分逆转这些效应。额外的重复实验表明,衰老诱导剂可部分抵消PRRX2对胰腺癌的影响。总之,PRRX2可能作为胰腺癌治疗的潜在靶点。