Related Experiment Video
Updated: May 26, 2026
13:36
Detection of MicroRNAs in Microglia by Real-time PCR in Normal CNS and During Neuroinflammation
Published on: July 23, 2012
MicroRNAs in inflammation and immune responses
1Cellular and Molecular Pathology PhD Program, UCLA, Los Angeles, CA 90095, USA.
Leukemia
|December 21, 2011
Summary
MicroRNAs (miRNAs) regulate gene expression in immunity. This review examines their roles in immune cell function, feedback loops, and potential as therapeutic strategies for immune diseases.
Area of Science:
- Immunology
- Molecular Biology
- Genetics
Background:
- MicroRNAs (miRNAs) are key regulators of gene expression.
- Their roles in the immune system are increasingly understood.
- miRNAs influence various immune cell lineages and functions.
Purpose of the Study:
- To review current knowledge on miRNA mechanisms in immunity.
- To highlight the dual roles of miRNAs in immune responses (amplification and negative feedback).
- To discuss emerging concepts and future therapeutic applications of miRNAs.
Main Methods:
- Literature review of scientific publications on miRNAs in the immune system.
- Analysis of defined miRNA targets and their impact on immune cell function.
- Synthesis of information on miRNA-mediated gene regulation in immune processes.
Main Results:
- miRNAs modulate gene expression critical for immune cell function.
- Specific miRNAs act as negative feedback regulators or amplifiers of immune responses.
- Mechanisms involve repressing inhibitors or participating in feedback loops.
Conclusions:
- miRNAs play diverse and crucial roles in immune system regulation.
- Further research is needed to define specific miRNA functions in distinct immune cell types.
- miRNAs hold promise for developing novel therapeutic strategies for immune-related diseases.
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...
01:26Acute Inflammation I: Inflammatory Response
Acute inflammation is a rapid, short-lived physiological response to tissue injury or infection, designed to eliminate harmful agents and initiate repair. This tightly regulated process typically lasts from minutes to several days and is triggered by factors such as microbial invasion, physical trauma, or chemical injury.Recognition and Mediator ReleaseThe inflammatory response begins when resident immune cells—such as mast cells, macrophages, and dendritic cells—detect damage-associated...
01:28Inflammatory Response
An inflammatory response is a localized, nonspecific immune reaction that occurs when a tissue is injured. It is characterized by redness, swelling, heat, and pain, which are commonly called the cardinal signs and symptoms of inflammation. Inflammation can sometimes result in a loss of function.
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
01:23RNA Interference
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...