1. Academic Validation
  2. Polypyrimidine tract-binding protein 3/insulin-like growth factor 2 mRNA-binding proteins 3/high-mobility group A1 axis promotes renal cancer growth and metastasis

Polypyrimidine tract-binding protein 3/insulin-like growth factor 2 mRNA-binding proteins 3/high-mobility group A1 axis promotes renal cancer growth and metastasis

  • iScience. 2024 Feb 9;27(3):109158. doi: 10.1016/j.isci.2024.109158.
Qianqing Wang 1 Fang Chen 2 Yu He 2 Yue Gao 2 Jiawen Wang 2 Sufang Chu 2 Pei Xie 1 Jiateng Zhong 1 Haixia Shan 3 Jin Bai 1 2 4 Pingfu Hou 2 4
Affiliations

Affiliations

  • 1 Department of Gynecology Oncology, Xinxiang Central Hospital, The Fourth Clinical College of Xinxiang Medical University, Xinxiang, Henan 453000, China.
  • 2 Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China.
  • 3 Department of Oncology, The Affiliated Hospital of Xuzhou Medical University, 99 Huaihai Road, Xuzhou, Jiangsu 221002, China.
  • 4 Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Xuzhou Medical University, 209 Tongshan Road, Xuzhou, Jiangsu 221004, China.
Abstract

Polypyrimidine tract-binding protein 3 (PTBP3) plays an important role in the post-transcriptional regulation of gene expression, including mRNA splicing, translation, and stability. Increasing evidence has shown that PTBP3 promotes Cancer progression in several tumor types. However, the molecular mechanisms of PTBP3 in renal cell carcinoma (RCC) remain unknown. Here, tissue microarrays (TMAs) suggested that PTBP3 expression was increased in human RCC and that high PTBP3 expression was correlated with poor five-year overall survival and disease-free survival. We also showed that PTBP3 binds with HMGA1 mRNA in the 3'UTR region and let-7 miRNAs. PTBP3 interacted with IGF2BP3, and the PTBP3/IGF2BP3 axis prevented let-7 mediated HMGA1 mRNA silencing. PTBP3 promotes renal Cancer cell growth and metastasis in vitro and in vivo. Taken together, our findings indicate PTBP3 serves as a regulator of HMGA1 and suggest its potential as a therapeutic agent for RCC.

Keywords

Cancer; Cell biology; Molecular biology.

Figures
Products