2. Academic Validation
  3. NR4A1 depletion inhibits colorectal cancer progression by promoting necroptosis via the RIG-I-like receptor pathway

NR4A1 depletion inhibits colorectal cancer progression by promoting necroptosis via the RIG-I-like receptor pathway

  • Cancer Lett. 2024 Jan 30:585:216693. doi: 10.1016/j.canlet.2024.216693.
Jinghan Zhu 1,  Juntao Li 1,  Kexi Yang 1,  Yuqi Chen 2,  Jiayu Wang 1,  Yuxin He 1,  Kanger Shen 1,  Kun Wang 1,  Tongguo Shi 3,  Weichang Chen 4
Affiliations

Affiliations

  • 1 Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, China; Jiangsu Key Laboratory of Clinical Immunology, Soochow University, Suzhou, China; Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, China.
  • 2 Department of Gastroenterology, Dushu Lake Hospital Affiliated to Soochow University, Suzhou, China.
  • 3 Jiangsu Institute of Clinical Immunology, The First Affiliated Hospital of Soochow University, Suzhou, China. Electronic address: [email protected].
  • 4 Jiangsu Key Laboratory of Clinical Immunology, Soochow University, Suzhou, China; Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, China. Electronic address: [email protected].
PMID: 38301909 DOI: 10.1016/j.canlet.2024.216693
Abstract

Necroptosis is a regulated necrotic cell death mechanism and plays a crucial role in the progression of cancers. However, the potential role and mechanism of Necroptosis in colorectal Cancer (CRC) has not been fully elucidated. In this study, we found that nuclear receptor subfamily 4 group A member 1 (NR4A1) was highly expressed in CRC cells treated with TNF-α, Smac mimetic, and z-VAD-FMK (TSZ). The depletion of NR4A1 significantly enhanced the sensitivity of CRC cells to TSZ-induced Necroptosis, while NR4A1 overexpression suppressed these effects, as evidenced by the LDH assay, flow cytometry analysis of cell death, PI staining, and expression analysis of necrosome complexes (RIPK1, RIPK3, and MLKL). Moreover, NR4A1 deficiency made HT29 xenograft tumors sensitive to necroptotic cell death in vivo. Mechanistically, NR4A1 depletion promoted Necroptosis activation in CRC through the RIG-I-like Receptor pathway by interacting with DDX3. Importantly, the RIG-I pathway agonist poly(I:C) or inhibitor cFP abolished the effects of NR4A1 overexpression or suppression on Necroptosis in CRC cells. Moreover, we observed that NR4A1 was highly expressed in CRC tissues and was associated with a poor prognosis. In conclusion, our results suggest that NR4A1 plays a critical role in modulating Necroptosis in CRC cells and provide a new therapeutic target for CRC.

Keywords

Colorectal cancer; NR4A1; Necroptosis; RIG-I.

Figures
Products
  • Cat. No.
    Product Name
    Description
    Target
    Research Area
  • HY-P1934
    98.67%, Antifungal Cyclic Dipeptide
    HCV