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Updated: Jun 8, 2026
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CRISPR Gene Editing Tool for MicroRNA Cluster Network Analysis
Published on: April 25, 2022
Is there a link between dysregulated miRNA expression and disease?
To-Ha Thai1, Peter A Christiansen, George C Tsokos
1Division of Rheumatology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, Massachusetts 02115, USA. tthai@bidmc.harvard.edu
Discovery Medicine
|September 30, 2010
Summary
Micro-RNAs (miRNAs) are crucial regulators in biological processes and gene expression. Dysregulated miRNA levels are linked to diseases like lupus and cancer, with potential therapeutic applications.
Area of Science:
- Molecular Biology
- Genetics
- Immunology
Background:
- Micro-RNAs (miRNAs) are key regulators of biological processes, similar to coding genes.
- miRNA expression is tightly controlled, impacting tissue development and function when altered.
Purpose of the Study:
- To review the role of miRNAs in the immune system.
- To explore the link between dysregulated miRNA expression and diseases such as SLE and cancer.
- To summarize advancements in miRNA-targeted therapies.
Main Methods:
- Literature review of seminal studies on miRNA function.
- Analysis of research linking miRNA dysregulation to specific diseases.
- Summary of current therapeutic strategies targeting miRNAs.
Main Results:
- miRNAs play a significant role in immune system function.
- Aberrant miRNA expression is associated with systemic lupus erythematosus (SLE) and various cancers.
- Targeting miRNAs shows promise as a therapeutic approach.
Conclusions:
- miRNAs are vital regulators with implications in immunity and disease.
- Understanding miRNA dysregulation is crucial for disease treatment.
- miRNA-based therapeutics represent a developing frontier in medicine.
Related Concept Videos
01:22MicroRNAs
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 ends...
01:22MicroRNAs
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...
01:22MicroRNAs
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 ends...
01:23Regulation of Expression at Multiple Steps
The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the addition of a...
02:24Regulation of Expression Occurs at Multiple Steps
Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
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