Related Experiment Video
Updated: May 16, 2026

Monitoring Functionality and Morphology of Vasculature Recruited by Factors Secreted by Fast-growing Tumor-generating Cells
Published on: November 23, 2014
Class 3 semaphorins: physiological vascular normalizing agents for anti-cancer therapy
G Serini1, F Bussolino, F Maione
1Institute for Cancer Research at Candiolo (IRCC), University of Torino, Turin, Italy.
Abstract:
Findings from preclinical and clinical studies show that vascular normalization represents a novel strategy to enhance the efficacy of and overcome the acquired resistance to anti-angiogenic therapies in cancer. Several mechanisms of tumour vessel normalization have been revealed. Amongst them, secreted class 3 semaphorins (Sema3), which regulate axon guidance and angiogenesis, have been recently identified as novel vascular normalizing agents that inhibit metastatic dissemination by restoring vascular function. Here, we discuss the different biological functions and mechanisms of action of Sema3 in the context of tumour vascular normalization, and their impact on the different cellular components of the tumour microenvironment.
Insights
Vascular normalization using secreted class 3 semaphorins (Sema3) shows promise in improving anti-angiogenic cancer therapies and overcoming resistance. Sema3 restores vascular function, inhibiting cancer metastasis and impacting the tumor microenvironment.
Area of Science:
- Oncology
- Cancer Biology
- Vascular Biology
Background:
- Anti-angiogenic therapies are crucial in cancer treatment but face challenges with efficacy and acquired resistance.
- Vascular normalization is emerging as a strategy to enhance anti-cancer therapy outcomes.
- Tumor vessel normalization aims to improve blood flow and reduce tumor growth and metastasis.
Purpose of the Study:
- To discuss the biological functions and mechanisms of secreted class 3 semaphorins (Sema3) in tumor vascular normalization.
- To explore how Sema3 acts as a vascular normalizing agent.
- To analyze the impact of Sema3 on the tumor microenvironment and metastatic dissemination.
Main Methods:
- Review of preclinical and clinical studies on vascular normalization and anti-angiogenic therapies.
- Analysis of the role of secreted class 3 semaphorins (Sema3) in angiogenesis and vascular function.
- Examination of the cellular components within the tumor microenvironment affected by Sema3.
Main Results:
- Secreted class 3 semaphorins (Sema3) are identified as novel vascular normalizing agents.
- Sema3 inhibits metastatic dissemination by restoring vascular function.
- Sema3 influences various cellular components of the tumor microenvironment.
Conclusions:
- Vascular normalization, particularly through Sema3, offers a new strategy to enhance anti-angiogenic therapies.
- Sema3's ability to restore vascular function and inhibit metastasis is key to its therapeutic potential.
- Understanding Sema3's mechanisms is vital for developing more effective cancer treatments.
More Related Videos
Related Concept Videos
Regulation of Angiogenesis and Blood Supply
Cancer Therapies
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
Drugs that Stabilize Microtubules
Mechanism of Angiogenesis
Cancer-Critical Genes II: Tumor Suppressor Genes
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
Cancer-Critical Genes II: Tumor Suppressor Genes
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...

