2. Academic Validation
  3. ORP5 promotes tumor metastasis via stabilizing c-Met in renal cell carcinoma

ORP5 promotes tumor metastasis via stabilizing c-Met in renal cell carcinoma

  • Cell Death Discov. 2022 Apr 21;8(1):219. doi: 10.1038/s41420-022-01023-3.
Li Song  # 1,  Lin Zhang  # 1,  Yun Zhou 2,  Xiaotong Shao 1,  Yuting Xu 1,  Dongsheng Pei 3,  Qingling Wang 4
Affiliations

Affiliations

  • 1 Department of Pathology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, China.
  • 2 Department of Radiation Oncology, Xuzhou Central Hospital, Xuzhou, Jiangsu, 221000, China.
  • 3 Department of Pathology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, China. dspei@xzhmu.edu.cn.
  • 4 Department of Pathology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, China. qlwang@xzhmu.edu.cn.
  • # Contributed equally.
PMID: 35449154 DOI: 10.1038/s41420-022-01023-3
Abstract

ORP5, a lipid transporter, has been reported to increase the metastasis of several cancers. However, the potential mechanisms of ORP5 in renal cell carcinoma (RCC) remain unclear. In this study, we demonstrated that ORP5 was commonly overexpressed in tumor cells and tissues of RCC, and associated with tumor progression. Overexpression of ORP5 could promote RCC cells migration and invasion. In addition, the results suggested that the expression of ORP5 was favorably associated with c-Met expression, and ORP5 promoted RCC cells metastasis by upregulating c-Met in vitro and in vivo. Mechanistically, ORP5 facilitated the ubiquitination and degradation of c-Cbl (the E3 ligase of c-Met), and thus inhibited c-Met lysosomal degradation, which resulted in the stabilization of c-Met. In general, these findings revealed the role of ORP5 in contributing to tumorigenesis via upregulating c-Met in RCC.

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