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Updated: Oct 6, 2025

Analysis of Combinatorial miRNA Treatments to Regulate Cell Cycle and Angiogenesis
Published on: March 30, 2019
Signaling pathways modulated by miRNAs in breast cancer angiogenesis and new therapeutics
Bashdar Mahmud Hussen1, Abbas Salihi2, Sara Tharwat Abdullah3
1Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Erbil, Kurdistan Region, Iraq; Center of Research and Strategic Studies, Lebanese French University, Erbil, Kurdistan Region, Iraq.
Abstract:
MicroRNAs (miRNAs) act as oncogenes or tumor suppressors by suppressing the expression of target genes, some of which are engaged in angiogenic signaling pathways directly or indirectly. Tumor development and metastasis are dependent on angiogenesis, and it is the main reason for the poor prognosis of cancer patients. New blood vessels are formed from pre-existing vessels when angiogenesis occurs. Thus, it is essential to develop primary tumors and the spread of cancer to surrounding tissues. MicroRNAs (miRNAs) are small noncoding RNAs involved in various biological processes. They can bind to the 3'-UTR of their target genes and prevent them from expressing. MiRNAs control the activity of endothelial cells (ECs) through altering many biological pathways, which plays a key role in cancer progression and angiogenesis. Recent findings revealed that tumor-derived extracellular vesicles participated directly in the control of tumor angiogenesis by delivering miRNAs to ECs. miRNAs recently show great promise in cancer therapies to inhibit angiogenesis. In this study, we showed the miRNA-regulated signaling pathways in tumor angiogenesis with highlighting the anti-angiogenic therapy response and miRNA delivery methods that have been used to inhibit angiogenesis in both in vivo and in vitro studies.
Insights
MicroRNAs (miRNAs) regulate tumor angiogenesis, a key process in cancer growth and metastasis. This study explores miRNA-controlled pathways and delivery methods for anti-angiogenic cancer therapies.
Area of Science:
- Molecular Biology
- Cancer Research
- Biochemistry
Background:
- Tumor development and metastasis heavily rely on angiogenesis, the formation of new blood vessels.
- MicroRNAs (miRNAs) are small noncoding RNAs that regulate gene expression and are implicated in various biological processes, including cancer.
- Endothelial cell (EC) activity is crucial for angiogenesis and is modulated by miRNAs through diverse signaling pathways.
Purpose of the Study:
- To elucidate miRNA-regulated signaling pathways involved in tumor angiogenesis.
- To highlight the response to anti-angiogenic therapy.
- To review miRNA delivery methods for inhibiting angiogenesis.
Main Methods:
- Review of existing literature on miRNA function in angiogenesis.
- Analysis of miRNA-regulated signaling pathways in cancer.
- Examination of in vitro and in vivo studies on miRNA-based anti-angiogenic strategies.
Main Results:
- MicroRNAs can act as oncogenes or tumor suppressors, influencing angiogenic signaling.
- Tumor-derived extracellular vesicles can deliver miRNAs to ECs, impacting angiogenesis.
- MiRNAs show significant potential as therapeutic agents to inhibit tumor angiogenesis.
Conclusions:
- Understanding miRNA-regulated pathways is crucial for developing effective anti-angiogenic cancer therapies.
- Targeted delivery of miRNAs offers a promising strategy for cancer treatment by inhibiting angiogenesis.
- Further research into miRNA mechanisms and delivery systems can advance cancer therapy.
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