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Hesperetin, a potential therapy for carcinoid cancer

Barbara Zarebczan1, Scott N Pinchot, Muthusamy Kunnimalaiyaan

  • 1Department of Surgery, University of Wisconsin, Madison, WI, USA.

American Journal of Surgery
|March 4, 2011
PubMed
Abstract

Insights

Hesperetin, a flavonoid, activates Notch1 signaling, suppressing carcinoid tumor growth and hormone production. This suggests hesperetin as a potential novel treatment for carcinoid cancer.

Area of Science:

  • Oncology
  • Molecular Biology
  • Pharmacology

Background:

  • Notch1 signaling pathway functions as a tumor suppressor in carcinoid tumors.
  • Carcinoid tumors are a type of neuroendocrine tumor.

Purpose of the Study:

  • To investigate hesperetin as a potential Notch1 activator.
  • To evaluate hesperetin's efficacy as a carcinoid tumor suppressor.

Main Methods:

  • High-throughput drug screening identified hesperetin.
  • Assessed human gastrointestinal carcinoid (BON) cell growth using MTT assay.
  • Measured neuroendocrine tumor markers (human achaete-scute complex-like 1, chromogranin A) and Notch1 expression via Western blot and real-time PCR.

Main Results:

  • Hesperetin induced dose-dependent cell death in BON cells.
  • Reduced expression of human achaete-scute complex-like 1 and chromogranin A.
  • Increased Notch1 levels and messenger RNA, indicating transcriptional regulation.

Conclusions:

  • Hesperetin enhances Notch1 expression in carcinoid cells.
  • Suppresses tumor cell proliferation and bioactive hormone production.
  • Warrants further investigation as a potential carcinoid cancer therapeutic.

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