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Isolation of Human Endothelial Cells from Normal Colon and Colorectal Carcinoma - An Improved Protocol
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Antitumor activity of Notch‑1 inhibition in human colorectal carcinoma cells

Wangdi Liao1, Guohua Li1, Yu You1

  • 1Department of Gastroenterology, The First Affiliated Hospital, Nanchang University, Nanchang, Jiangxi 330006, P.R. China.

Oncology Reports
|December 30, 2017
PubMed

Insights

Notch-1 acts as an oncogene in colorectal cancer. Inhibiting Notch-1 expression and activity significantly reduces tumor cell growth and promotes apoptosis, offering a potential therapeutic strategy for colorectal carcinoma.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • The role of Notch-1 signaling in cancer development is increasingly recognized.
  • Understanding Notch-1's specific function in colorectal carcinoma is crucial for targeted therapies.

Purpose of the Study:

  • To investigate the expression and functional role of Notch-1 in colorectal carcinoma.
  • To explore the potential of targeting Notch-1 for cancer treatment.

Main Methods:

  • Immunohistochemistry was used to detect Notch-1 and Jagged1 expression in various colorectal tissues.
  • Colorectal cancer cell lines were used to confirm Notch-1 expression.
  • Lentiviral-mediated Notch-1 siRNA and the Notch-1 inhibitor DAPT were employed to modulate Notch-1 activity in HT29 cells.

Main Results:

  • Notch-1 and Jagged1 were significantly upregulated in colorectal carcinoma and adenoma tissues compared to normal tissues.
  • Notch-1 was widely expressed in multiple colorectal cancer cell lines.
  • Silencing Notch-1 inhibited cell proliferation, induced G1 cell cycle arrest, and promoted apoptosis in HT29 cells, also increasing P21 and PUMA expression.

Conclusions:

  • Notch-1 functions as an oncogene in colorectal carcinoma.
  • Inhibition of Notch-1 can suppress tumor cell growth and induce apoptosis, suggesting its potential as a therapeutic target in colorectal cancer.

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