Basic & Clinical Medicine ›› 2026, Vol. 46 ›› Issue (9): 1277-1281.doi: 10.16352/j.issn.1001-6325.2026.09.1277

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Progress in ubiquitin-specific protease 1 of tumors

LIU Lindi1, LIU Xuyan2*, LYU Qingjie1*   

  1. 1. Department of Pathology, Shengjing Hospital of China Medical University, Shenyang 110004;
    2. Department of Pathology, Liaoning Province Health Industry Group Bengang General Hospital, Benxi 117000, China
  • Received:2025-08-22 Revised:2025-11-26 Online:2026-09-05 Published:2026-08-18
  • Contact: *lvqjie@163.com; lxy_7169@163.com

Abstract: Ubiquitin-specific protease 1 (USP1) is an important member of the deubiquitinase family. It participates in biological processes such as DNA damage repair by regulating the stability of key proteins. USP1 is abnormally expressed in various tumors, and its expression level is closely related to tumor initiation, progression, metastasis and prognosis. Abnormal USP1 expression in multiple cancer cell types regulates cancer cell development through affecting biological processes including DNA damage repair, epithelial-mesenchymal transition, autophagy, cell cycle and mitochondrial fission. In-depth analysis of USP1 function and mechanism involved in various cancer cells provides a theoretical basis for diagnosis, prevention and treatment, as well as the development of USP1-targeted drugs.

Key words: ubiquitin-specific protease 1, cancer, chemoresistance, DNA damage

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