Heterogenous nuclear ribonucleoprotein D-like controls endothelial cell functions.

Area of Science:

• Molecular Biology
• Cell Biology
• RNA Biology

Background:

• Heterogeneous nuclear ribonucleoproteins (hnRNPs) are vital RNA-binding proteins controlling gene expression.
• Dysregulation of hnRNP networks is linked to diseases like cancer, but their roles in normal cellular functions are less understood.
• Endothelial cells play critical roles in vascular homeostasis and disease.

Purpose of the Study:

• To investigate the physiological function of HNRNPDL in endothelial cells.
• To identify the molecular targets and downstream effects of HNRNPDL in this cell type.

Main Methods:

• Knockdown of HNRNPDL in endothelial cells.
• Assessment of endothelial cell proliferation, migration, and spheroid sprouting.
• Transcriptome analysis to identify HNRNPDL targets.

Main Results:

• HNRNPDL knockdown resulted in impaired endothelial cell proliferation, migration, and spheroid sprouting.
• Cyclin D1 (CCND1) and tropomyosin 4 (TPM4) were identified as direct targets of HNRNPDL.
• The expression changes of CCND1 and TPM4 correlated with the observed phenotypic alterations.

Conclusions:

• HNRNPDL plays a significant role in maintaining the homeostasis of physiological processes in endothelial cells.
• HNRNPDL regulates endothelial cell function through targets like CCND1 and TPM4.
• These findings highlight HNRNPDL as a key factor in endothelial cell biology.