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Published on: October 27, 2020
DcR3 induces epithelial-mesenchymal transition through activation of the TGF-β3/SMAD signaling pathway in CRC
Yan-Ping Liu1,2,3, Hui-Fang Zhu1,2,3, Ding-Li Liu4
1Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou, China.
Abstract:
Decoy receptor 3 (DcR3), a novel member of the tumor necrosis factor receptor (TNFR) family, was recently reported to be associated with tumorigenesis and metastasis. However, the role of DcR3 in human colorectal cancer (CRC) has not been fully elucidated. In this study, we found that DcR3 expression was significantly higher in human colorectal cancer tissues than in paired normal tissues, and that DcR3 expression was strongly correlated with tumor invasion, lymph node metastases and poor prognoses. Moreover, DcR3 overexpression significantly enhanced CRC cell proliferation and migration in vitro and tumorigenesis in vivo. Conversely, DcR3 knockdown significantly repressed CRC cell proliferation and migration in vitro, and DcR3 deficiency also attenuated CRC tumorigenesis and metastasis in vivo. Functionally, DcR3 was essential for TGF-β3/SMAD-mediated epithelial-mesenchymal transition (EMT) of CRC cells. Importantly, cooperation between DcR3 and TGF-β3/SMAD-EMT signaling-related protein expression was correlated with survival and survival time in CRC patients. In conclusion, our results demonstrate that DcR3 may be a prognostic biomarker for CRC and that this receptor facilitates CRC development and metastasis by participating in TGF-β3/SMAD-mediated EMT of CRC cells.
Insights
Decoy receptor 3 (DcR3) promotes colorectal cancer (CRC) growth and metastasis by activating TGF-β3/SMAD-mediated epithelial-mesenchymal transition (EMT). Elevated DcR3 levels indicate poor prognosis in CRC patients, suggesting its potential as a biomarker.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Research
Background:
- Decoy receptor 3 (DcR3), a tumor necrosis factor receptor (TNFR) family member, is implicated in tumorigenesis.
- The specific role of DcR3 in human colorectal cancer (CRC) remains unclear.
Purpose of the Study:
- To investigate the role of DcR3 in the development and progression of human colorectal cancer (CRC).
- To explore DcR3 as a potential prognostic biomarker for CRC.
Main Methods:
- Quantitative analysis of DcR3 expression in CRC tissues versus normal tissues.
- In vitro and in vivo experiments assessing the effects of DcR3 overexpression and knockdown on CRC cell behavior.
- Investigation of DcR3's functional role in TGF-β3/SMAD-mediated epithelial-mesenchymal transition (EMT).
Main Results:
- DcR3 expression is significantly upregulated in CRC tissues and correlates with invasion, metastasis, and poor prognosis.
- DcR3 overexpression enhances CRC cell proliferation, migration, and tumorigenesis, while knockdown inhibits these processes.
- DcR3 is crucial for TGF-β3/SMAD-mediated EMT in CRC cells, and its cooperation with related proteins predicts patient survival.
Conclusions:
- DcR3 facilitates CRC development and metastasis through TGF-β3/SMAD-mediated EMT.
- DcR3 serves as a potential prognostic biomarker for colorectal cancer.
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