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Related Experiment Video

Updated: May 15, 2026

A Comprehensive Procedure to Evaluate the In Vitro Performance of the Putative Hemangioblastoma Neovascularization Using the Spheroid Sprouting Assay

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Scl gene construction, expression and effect on hemangioma.

H X Yin¹, Z H Zhang, J C Shen

¹Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Biology and Genetic Resources of Torpical Crops, Ministry of Agriculture, Haikou 571101, Hainan, China.

Molecular Biology Reports

|December 29, 2012

Summary

A novel DNA sequence, Scl, effectively inhibits hemangioma growth and angiogenesis. This angiogenesis inhibitor demonstrated significant cytotoxicity and induced apoptosis in hemangioma cells, offering a promising therapeutic avenue.

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Area of Science:

Biochemistry
Molecular Biology
Oncology

Background:

Hemangioma is a common neonatal vascular tumor characterized by endothelial cell hyperplasia.
Angiogenesis inhibitors target the proliferation of vascular endothelial cells, crucial for tumor growth.
Developing targeted therapies for hemangioma remains an important clinical challenge.

Purpose of the Study:

To investigate the anti-angiogenic and anti-hemangioma properties of a newly designed DNA sequence, Scl.
To evaluate the efficacy of recombinant Scl protein in inhibiting angiogenesis and hemangioma cell proliferation in vitro and in vivo.

Main Methods:

Recombinant Scl protein was expressed in Pichia Pastoris and purified.
In vitro assays assessed Scl's effect on CAM angiogenesis and hemangioma cell cytotoxicity (TUNEL assay, OD measurement).
In vivo studies utilized a cock's wattle hemangioma model to evaluate Scl's impact on blood vessel formation and tumor size.

Main Results:

Scl significantly suppressed CAM angiogenesis at a low dosage (1 μg), comparable to angiostatin.
Scl exhibited strong cytotoxicity against hemangioma cells, inducing 92% apoptosis versus 1.3% in controls.
Treatment with Scl reduced blood vessel formation and hemangioma growth by approximately 50% in vivo.

Conclusions:

The recombinant Scl protein possesses potent anti-angiogenic and anti-hemangioma activities.
Scl demonstrates significant potential as a therapeutic agent for treating hemangioma.
Further research into Scl's mechanism of action and clinical application is warranted.