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Published on: July 20, 2019
Suppressing NFAT increases VEGF signaling in hemangiomas
Lisette M Acevedo1, David A Cheresh
1Department of Pathology and Moores UCSD Cancer Center, University of California, San Diego, La Jolla, CA 92093-0803, USA.
Cancer Cell
|December 9, 2008
Summary
Infantile hemangiomas, common tumors, show abnormal endothelial cell behavior due to suppressed NFAT-dependent VEGFR1 expression. This leads to increased VEGFR2 signaling, driving hemangioma growth.
Area of Science:
- Vascular Biology
- Oncology
- Cell Signaling
Background:
- Infantile hemangiomas are the most frequent endothelial cell (EC) tumors.
- The precise mechanisms governing hemangioma EC behavior remain largely unknown.
- Understanding EC regulation is crucial for developing targeted therapies.
Discussion:
- Jinnin et al. investigated the molecular underpinnings of enhanced vascular endothelial growth factor receptor 2 (VEGFR2) signaling in infantile hemangioma ECs.
- The study identifies a critical role for nuclear factor of activated T cells (NFAT) in regulating VEGFR1 expression.
- Suppression of NFAT-dependent VEGFR1 expression was found to be a key factor in promoting aberrant EC behavior.
Key Insights:
- Enhanced VEGFR2 signaling in hemangioma ECs is directly linked to the downregulation of VEGFR1.
- NFAT acts as a crucial regulator, suppressing VEGFR1 expression in the context of infantile hemangiomas.
- This molecular interplay provides a novel target for understanding and potentially treating these tumors.
Outlook:
- Further research into the NFAT-VEGFR1-VEGFR2 axis could reveal new therapeutic strategies.
- Targeting this pathway may offer a way to control hemangioma EC proliferation and angiogenesis.
- This study opens avenues for developing non-invasive treatments for infantile hemangiomas.
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