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Related Experiment Video

Updated: May 31, 2026

Analysis of Combinatorial miRNA Treatments to Regulate Cell Cycle and Angiogenesis

Analysis of Combinatorial miRNA Treatments to Regulate Cell Cycle and Angiogenesis

Published on: March 30, 2019

miR-200a modulate HUVECs viability and migration.

Yi-Xuan Li¹, Da-Quan Liu, Chen Zheng

¹Tianjin Life Science Research Center and Basic Medical School, Tianjin Medical University, Tianjin, China.

|June 24, 2011

Summary

MicroRNAs (miRNAs) regulate gene expression. This study identifies miR-200a as a key regulator in angiogenesis by targeting thrombospondin-1 (THBS1), impacting endothelial cell function.

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Last Updated: May 31, 2026

Analysis of Combinatorial miRNA Treatments to Regulate Cell Cycle and Angiogenesis

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Published on: March 30, 2019

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In ovo Expression of MicroRNA in Ventral Chick Midbrain

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Published on: September 16, 2013

Area of Science:

Molecular Biology
Cell Biology
Biochemistry

Background:

MicroRNA (miRNA) posttranscriptional regulation is crucial for organism development.
Understanding miRNA roles in angiogenesis is vital for vascular biology research.

Purpose of the Study:

To investigate the function of specific miRNAs in angiogenesis.
To identify novel miRNA targets involved in endothelial cell function.

Main Methods:

Loss-of-function screening assay in human umbilical vein endothelial cells (HUVECs).
Knockdown of miRNAs using antisense oligonucleotides (ASOs).
Bioinformatics analysis to predict miRNA-target interactions.
Validation of direct binding between miR-200a and THBS1 3'UTR.

Main Results:

Knockdown of seven miRNAs (miR-95a, miR-126, miR-129, miR-137, miR-139, miR-200a, miR-335) suppressed HUVEC viability.
Endogenous miR-200a inhibition decreased HUVEC viability and migration.
miR-200a directly binds to the 3' untranslated region (UTR) of thrombospondin-1 (THBS1) and negatively regulates its expression.

Conclusions:

miR-200a plays a significant role in regulating angiogenesis.
The miR-200a/THBS1 axis is a novel regulatory pathway in endothelial cells.
This finding provides new insights into the molecular mechanisms of angiogenesis.