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Updated: Nov 5, 2025

Monitoring Functionality and Morphology of Vasculature Recruited by Factors Secreted by Fast-growing Tumor-generating Cells
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Monitoring Functionality and Morphology of Vasculature Recruited by Factors Secreted by Fast-growing Tumor-generating Cells

Published on: November 23, 2014

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Regulation of intercellular biomolecule transfer-driven tumor angiogenesis and responses to anticancer therapies

Zhen Lu1, Angelica Ortiz1, Ioannis I Verginadis2

  • 1Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.

The Journal of Clinical Investigation
|May 17, 2021
PubMed

Insights

Cholesterol 25-hydroxylase (CH25H) suppresses intercellular biomolecule transfer (ICBT), crucial for tumor growth and metastasis. Inhibiting ICBT enhances cancer therapy efficacy and prevents metastasis.

Area of Science:

  • Oncology
  • Cell Biology
  • Molecular Medicine

Background:

  • Intercellular biomolecule transfer (ICBT) fuels tumor progression, therapy resistance, and metastasis.
  • Endothelial cells (ECs) play a critical role in ICBT-driven tumor growth and angiogenesis.

Purpose of the Study:

  • To identify key regulators of ICBT between malignant and endothelial cells.
  • To investigate the role of cholesterol 25-hydroxylase (CH25H) in suppressing ICBT and its impact on tumor biology.

Main Methods:

  • Characterization of CH25H function in ICBT using cellular and in vivo models.
  • Analysis of CH25H expression in colorectal cancer patient samples.
  • Pharmacological inhibition of ICBT using reserpine and combination therapies.

Main Results:

  • CH25H was identified as a critical suppressor of ICBT between malignant cells and ECs.
  • Downregulation of CH25H in human colorectal cancer ECs correlated with poor outcomes.
  • Endothelial CH25H knockout promoted angiogenesis and tumor growth.
  • Reserpine-mediated ICBT inhibition demonstrated angiostatic effects and enhanced radio-/chemotherapy efficacy, preventing metastasis.

Conclusions:

  • CH25H is a key suppressor of ICBT, impacting tumor angiogenesis and growth.
  • Targeting ICBT offers a promising strategy to improve anticancer therapy outcomes and mitigate prometastatic side effects.
Keywords:
Colorectal cancerEndothelial cellsOncologyVascular Biology

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