MicroRNAs (miRNA) are small (~22 nucleotide] non-coding RNA molecules originally characterised as nonsense
or junk DNA. Emerging research suggests that these molecules have diverse regulatory roles in an array of molecular,
cellular and physiological processes. MiRNAs are versatile and highly stable molecules, therefore, they are able to exist
as intracellular or extracellular miRNAs. The purpose of this paper is to review the function and role of miRNAs in the
intracellular space with specific focus on the interactions between miRNAs and organelles such as the mitochondria and
the rough endoplasmic reticulum. Understanding the role of miRNAs in the intracellular space may be vital in understanding
the mechanism of certain diseases.
Keywords: Cancer, endoplasmic reticulum, miRNA, mitochondria, organelles, P-bodies.
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