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MicroRNAs01:22

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MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
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MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After...
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The regulation of the cardiovascular system allows the body to adapt to various demands and maintain homeostasis.
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Related Experiment Video

Updated: Apr 21, 2026

In Vivo Nanovector Delivery of a Heart-specific MicroRNA-sponge
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MicroRNA Signature and Cardiovascular Dysfunction.

Gnanapragasam Arunachalam1, Rohit Upadhyay, Hong Ding

  • 1Departments of *Pharmacology; and †Medical Education, Weill Cornell Medical College in Qatar, Doha, Qatar.

Journal of Cardiovascular Pharmacology
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MicroRNAs (miRNAs) are key regulators of cardiovascular health, offering potential as biomarkers and therapeutic targets. This review explores their role in cardiovascular disease (CVD) and dysfunction.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Genetics

Background:

  • Rising global rates of obesity and type 2 diabetes increase cardiovascular disease (CVD) risk.
  • MicroRNAs (miRNAs), small noncoding RNAs, regulate gene expression post-transcriptionally.
  • miRNAs are critical for cardiovascular system development, function, and pathophysiology.

Purpose of the Study:

  • To review the role of miRNAs in regulating cardiovascular disease (CVD).
  • To discuss miRNA involvement in macrovascular and microvascular dysfunction.
  • To highlight miRNAs as potential biomarkers and therapeutic targets for CVD.

Main Methods:

  • Literature review of studies investigating miRNA function in cardiovascular biology.
  • Analysis of miRNA involvement in gene silencing mechanisms.
  • Examination of miRNA roles in cardiac and vascular signaling pathways.

Main Results:

  • miRNAs are implicated as dynamic regulators of cardiovascular signaling and pathophysiology.
  • Numerous miRNAs have been identified as novel biomarkers for CVD detection.
  • miRNAs show promise as therapeutic targets for managing CVD.

Conclusions:

  • miRNAs are crucial in cardiovascular homeostasis and disease.
  • miRNAs represent a significant area for early CVD detection and novel therapeutic strategies.
  • Further research into miRNA mechanisms can advance cardiovascular medicine.