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Related Experiment Video

Updated: Jun 2, 2026

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

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Published on: November 23, 2014

Ccm1 assures microvascular integrity during angiogenesis.

Huiling Liu¹, Daniele Rigamonti, Ahmed Badr

¹Department of Neurosurgery, University of Mississippi Medical Center, Jackson, MS 39216, USA.

Translational Stroke Research

|May 13, 2011

Summary

Loss of CCM1 gene in zebrafish causes increased endothelial cell apoptosis during microvascular development. This finding in cerebral cavernous malformations (CCM) research clarifies previous inconsistencies and identifies a key survival pathway.

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Area of Science:

Vascular biology
Developmental biology
Genetics

Background:

Cerebral cavernous malformations (CCM) involve abnormal intracranial capillaries, increasing hemorrhage risk.
Mutations in CCM1 genes are linked to CCM development in humans.
Previous studies on Ccm1 deficiency in zebrafish yielded conflicting results regarding vascular endothelial cell populations.

Purpose of the Study:

To investigate the role of Ccm1 in zebrafish embryonic vascular development.
To reconcile contradictory findings on endothelial cell changes in Ccm1-deficient zebrafish.
To elucidate the molecular mechanisms underlying CCM1 deficiency in endothelial cells.

Main Methods:

In vivo high-resolution imaging of zebrafish embryos.
In vitro studies using human endothelial cells.
Analysis of apoptosis and cell signaling pathways.

Main Results:

Loss of Ccm1 in zebrafish embryos significantly increased vascular endothelial cell apoptosis during late-stage angiogenesis.
In vitro studies confirmed that CCM1 deficiency promotes apoptosis via reduced activation of the integrin-linked kinase (ILK) survival pathway.
Ccm1 is crucial for maintaining microvascular integrity during embryonic angiogenesis.

Conclusions:

Ccm1 plays a vital role in regulating endothelial cell survival during microvascular development.
The spatial and temporal differences in observation likely explain prior conflicting results in zebrafish models.
Targeting the ILK pathway may offer therapeutic potential for CCM.