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Article

Downregulation of Notch1 induces apoptosis and inhibits cell proliferation and metastasis in laryngeal squamous cell carcinoma

Corrigendum in: /10.3892/or.2023.8581
  • Authors:
    • Meng-Yuan Dai
    • Fang Fang
    • You Zou
    • Xing Yi
    • Yong-Jun Ding
    • Chen Chen
    • Ze-Zhang Tao
    • Shi-Ming Chen
  • View Affiliations / Copyright

    Affiliations: Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan 430060, P.R. China, Department of Medical Market, Renmin Hospital of Wuhan University, Wuhan 430060, P.R. China
  • Pages: 3111-3119
    |
    Published online on: September 15, 2015
       https://doi.org/10.3892/or.2015.4274
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Abstract

Notch signaling plays a key role in a wide variety of human tumors; it can be an oncogene or a tumor-suppressor gene depending on the tissue context. The functions of Notch1 in laryngeal squamous cell carcinoma (LSCC) are largely unknown. We investigated the role of Notch1 in LSCC cell growth, apoptosis and metastasis. We analyzed Notch1 expression in clinical LSCC samples using quantum dot immunohistochemistry (QD-IHC) and conventional IHC. Human laryngeal carcinoma HEp-2 cells were transfected with Notch1-specific short hairpin RNA (shRNA), and cell proliferation, apoptosis, and migration and invasion were evaluated using the cell counting assay, flow cytometry and wound healing and Transwell assays, respectively; western blotting was used to validate the expression of Notch1 target genes. Compared with normal tissues, Notch1 was upregulated in LSCC tissues; compared with LSCC tissues without metastasis, Notch1 upregulation was enhanced in LSCC tissues with metastasis (P<0.05). Transfection downregulated Notch1 mRNA and protein expression levels in the Notch1 shRNA group. There was a significantly greater decrease in cell proliferation in the Notch1 shRNA group than cell proliferation in the non-transfected (P<0.05) and negative shRNA groups (P<0.05). Furthermore, Notch1 knockdown induced apoptosis in the HEp-2 cells. Additionally, the number of migrated and invasive cells in the Notch1 shRNA group was decreased (P<0.05). Notch1 knockdown in the HEp-2 cells greatly inhibited phosphorylated extracellular signal-related kinase (p-ERK), phosphorylated protein kinase B (p-AKT), c-Myc, Bcl-2, p21, cyclin D1, cyclin-dependent kinase 4 (CDK4) and cyclin E expression levels and increased Bax expression. Altogether, our findings indicate that Notch1 expression is increased in human LSCC and correlates with tumorigenesis and metastasis, while in HEp-2 cells, Notch1 knockdown inhibited cell growth, induced apoptosis and inhibited migration and invasion by regulating Notch1 target genes, suggesting it may be a potential therapeutic target for treating LSCC.
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Copy and paste a formatted citation
Spandidos Publications style
Dai M, Fang F, Zou Y, Yi X, Ding Y, Chen C, Tao Z and Chen S: Downregulation of Notch1 induces apoptosis and inhibits cell proliferation and metastasis in laryngeal squamous cell carcinoma Corrigendum in /10.3892/or.2023.8581. Oncol Rep 34: 3111-3119, 2015.
APA
Dai, M., Fang, F., Zou, Y., Yi, X., Ding, Y., Chen, C. ... Chen, S. (2015). Downregulation of Notch1 induces apoptosis and inhibits cell proliferation and metastasis in laryngeal squamous cell carcinoma Corrigendum in /10.3892/or.2023.8581. Oncology Reports, 34, 3111-3119. https://doi.org/10.3892/or.2015.4274
MLA
Dai, M., Fang, F., Zou, Y., Yi, X., Ding, Y., Chen, C., Tao, Z., Chen, S."Downregulation of Notch1 induces apoptosis and inhibits cell proliferation and metastasis in laryngeal squamous cell carcinoma Corrigendum in /10.3892/or.2023.8581". Oncology Reports 34.6 (2015): 3111-3119.
Chicago
Dai, M., Fang, F., Zou, Y., Yi, X., Ding, Y., Chen, C., Tao, Z., Chen, S."Downregulation of Notch1 induces apoptosis and inhibits cell proliferation and metastasis in laryngeal squamous cell carcinoma Corrigendum in /10.3892/or.2023.8581". Oncology Reports 34, no. 6 (2015): 3111-3119. https://doi.org/10.3892/or.2015.4274
Copy and paste a formatted citation
x
Spandidos Publications style
Dai M, Fang F, Zou Y, Yi X, Ding Y, Chen C, Tao Z and Chen S: Downregulation of Notch1 induces apoptosis and inhibits cell proliferation and metastasis in laryngeal squamous cell carcinoma Corrigendum in /10.3892/or.2023.8581. Oncol Rep 34: 3111-3119, 2015.
APA
Dai, M., Fang, F., Zou, Y., Yi, X., Ding, Y., Chen, C. ... Chen, S. (2015). Downregulation of Notch1 induces apoptosis and inhibits cell proliferation and metastasis in laryngeal squamous cell carcinoma Corrigendum in /10.3892/or.2023.8581. Oncology Reports, 34, 3111-3119. https://doi.org/10.3892/or.2015.4274
MLA
Dai, M., Fang, F., Zou, Y., Yi, X., Ding, Y., Chen, C., Tao, Z., Chen, S."Downregulation of Notch1 induces apoptosis and inhibits cell proliferation and metastasis in laryngeal squamous cell carcinoma Corrigendum in /10.3892/or.2023.8581". Oncology Reports 34.6 (2015): 3111-3119.
Chicago
Dai, M., Fang, F., Zou, Y., Yi, X., Ding, Y., Chen, C., Tao, Z., Chen, S."Downregulation of Notch1 induces apoptosis and inhibits cell proliferation and metastasis in laryngeal squamous cell carcinoma Corrigendum in /10.3892/or.2023.8581". Oncology Reports 34, no. 6 (2015): 3111-3119. https://doi.org/10.3892/or.2015.4274
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