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Preparation and In Vitro Characterization of Magnetized miR-modified Endothelial Cells
Published on: May 2, 2017
MicroRNA-142 promotes the expression of eNOS in human peripheral blood-derived endothelial progenitor cells in vitro
1Department of Neurosurgery, Second Hospital of Tianjin Medical University, Tianjin China. hua_yan2008@163.com.
Objective:
MicroRNAs (miRNAs) are small non-coding RNAs (18-25nt) that regulate gene expression mainly through affecting post-transcriptional modification. In this research, the human peripheral blood-derived endothelial progenitor cells were isolated to research the inter-coordination of miR-142, ADAMTS-1, VEGF and eNOS through gene over-expressed in EPCs.
Materials And Methods:
Endothelial progenitor cells (EPCs) were isolated from human peripheral blood, and demonstrate the interaction of miR-142 and targets (ADAMTS-1) in vitro.
Results:
The results showed that miR-142 could promote the productivity of NO through inhibited ADAMTS-1 expression (inhibitor of VEGF), activated function of VEGF and eNOS in human EPCs. This finding suggests that miR-142 and eNOS may have cooperative effect in vessel tone and play an important role in the angiogenesis.
Conclusions:
In our research, we demonstrated that the miR-142 can promote eNOS expression through down-regulated ADAMTS-1 expression (inhibitor of VEGF) in human EPCs, these results provide a new insight in microRNA regulation of vessel tone and angiogenesis.
Insights
MicroRNAs (miRNAs) regulate gene expression. This study shows miR-142 promotes endothelial progenitor cell function by inhibiting ADAMTS-1, enhancing VEGF and eNOS activity for better angiogenesis.
Area of Science:
- Molecular Biology
- Cell Biology
- Biochemistry
Background:
- MicroRNAs (miRNAs) are small non-coding RNAs regulating gene expression post-transcriptionally.
- Endothelial progenitor cells (EPCs) are crucial for angiogenesis and vascular health.
- Vascular endothelial growth factor (VEGF) and endothelial nitric oxide synthase (eNOS) are key regulators of vascular function.
Purpose of the Study:
- To investigate the regulatory role of miR-142 in human peripheral blood-derived EPCs.
- To elucidate the inter-coordination between miR-142, ADAMTS-1, VEGF, and eNOS.
- To understand the impact of miR-142 on vascular tone and angiogenesis.
Main Methods:
- Isolation of human peripheral blood-derived endothelial progenitor cells (EPCs).
- In vitro experiments to demonstrate the interaction between miR-142 and its target ADAMTS-1.
- Gene overexpression in EPCs to study regulatory pathways.
Main Results:
- miR-142 was found to inhibit ADAMTS-1 expression in human EPCs.
- Inhibition of ADAMTS-1 by miR-142 led to activation of VEGF and eNOS.
- This resulted in increased nitric oxide (NO) productivity and enhanced EPC function.
Conclusions:
- miR-142 promotes eNOS expression by down-regulating ADAMTS-1, an inhibitor of VEGF.
- miR-142 and eNOS exhibit a cooperative effect in regulating vessel tone.
- These findings offer new insights into microRNA-mediated regulation of angiogenesis.
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