PTPRO suppresses lymph node metastasis of esophageal carcinoma by dephosphorylating MET.

Hongmei Dong, Wan Lin, Liang Du, Zhimeng Yao, Feifei Li, Shuanglong Chen, Yiteng Huang, Hongzheng Ren, Yichen Luo, Songwang Cai, Yexi Chen, Hui Tang, Xiaofu Qiu, Yunlong Pan, Xingxu Huang, Dianzheng Zhang, Shegan Gao, Sai-Ching Jim Yeung, Hao Zhang

Research output: Contribution to journalArticlepeer-review

Abstract

Protein tyrosine phosphatase receptor-type O (PTPRO) is a membrane-bound tyrosine phosphatase. Notably, epigenetically silenced PTPRO due to promoter hypermethylation is frequently linked to malignancies. In this study, we used cellular and animal models, and patient samples to demonstrate that PTPRO can suppress the metastasis of esophageal squamous cell carcinoma (ESCC). Mechanistically, PTPRO can inhibit MET-mediated metastasis by dephosphorylating Y1234/1235 in the kinase activation loop of MET. Patients with PTPRO low /p-MET high had significantly poor prognosis, suggesting that PTPRO low /p-MET high can serve as an independent prognostic factor for patients with ESCC.

Original languageAmerican English
JournalCancer letters
Volume567
StatePublished - Jul 28 2023

Keywords

  • Animals
  • Cell Line
  • Esophageal Neoplasms
  • Esophageal Squamous Cell Carcinoma
  • Lymphatic Metastasis
  • Phosphoric Monoester Hydrolases
  • Prognosis
  • Tumor

Disciplines

  • Medicine and Health Sciences
  • Oncology

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