Human genetic variation and its effect on miRNA biogenesis, activity and function.

Area of Science:

• Genetics
• Molecular Biology
• Biochemistry

Background:

• MicroRNAs (miRNAs) are key regulators of gene expression, influencing over 60% of human genes.
• miRNAs fine-tune cellular processes by binding to mRNA targets, leading to gene silencing.
• Their proper function relies on accurate transcription, processing, and secondary structure, all influenced by genomic sequence.

Purpose of the Study:

• To review the impact of genetic variations on miRNA biosynthesis, processing, and regulation.
• To highlight how genomic alterations can affect miRNA function and lead to human diseases.

Main Methods:

• Literature review focusing on genetic variations (SNPs, indels, CNVs) in miRNA-related genomic regions.
• Analysis of how these variations impact miRNA secondary structure and target binding.
• Case study examples linking miRNA genetic variations to specific human diseases.

Main Results:

• Genetic variations, including SNPs, indels, and CNVs, can occur in critical miRNA regulatory regions.
• These variations can disrupt miRNA secondary structure, affecting processing and stability.
• Altered miRNA binding to target mRNAs can lead to dysregulated gene expression and disease pathogenesis.

Conclusions:

• Genomic variations significantly impact miRNA-mediated gene regulation.
• Understanding these variations is essential for diagnosing and potentially treating diseases linked to miRNA dysfunction.
• Further research into miRNA genetic variations can uncover novel therapeutic targets.