Related Experiment Video
Updated: Jul 16, 2026

09:39
Enhanced Northern Blot Detection of Small RNA Species in Drosophila Melanogaster
Published on: August 21, 2014
MicroRNA, the putative molecular control for mid-life decline
1Gheens Center on Aging, and Department of Biochemistry and Molecular Biology, University of Louisville School of Medicine, Louisville, KY, USA. Eugenia.Wang@Louisville.edu
Ageing Research Reviews
|March 27, 2007
Summary
MicroRNAs, small RNAs regulating gene expression, may drive mid-life cellular decline and frailty. Identifying dysfunctional microRNAs could enable preventive strategies against age-related diseases.
Area of Science:
- Gerontology and Molecular Biology
- Preventive Medicine and Cellular Signaling
Background:
- Aging populations necessitate new strategies to combat age-dependent frailties.
- Cellular health decline in mid-life, though sub-clinical, may increase late-life disease risk.
Purpose of the Study:
- To propose microRNAs as key regulators of mid-life cellular decline.
- To explore microRNA dysfunction as a cause of molecular frailty and tissue dysfunction.
Main Methods:
- Review of current understanding of microRNA function in gene regulation.
- Hypothesizing the role of microRNA dysregulation in mid-life aging processes.
Main Results:
- MicroRNAs, small non-coding RNAs, negatively regulate gene expression.
- Dysfunctional microRNAs may disrupt cellular signaling, leading to frailty.
Conclusions:
- Identifying specific dysfunctional microRNAs is crucial for future research.
- Targeting microRNAs offers a potential preventive approach to combat mid-life decline and reduce late-life disease risk.
Related Concept Videos
MicroRNAs
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...
MicroRNAs
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...
MicroRNAs
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...
Mitochondria
Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
Replicative Cell Senescence
Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while preventing excessive proliferation. Replicative senescence is associated with the gradual loss of the telomere — short, repetitive DNA sequences found at the end of the chromosomes. Telomeres are bound by a group of proteins to form a protective cap on the ends of chromosomes. Embryonic stem cells express telomerase — an enzyme that adds the telomeric...
Replicative Cell Senescence
Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while preventing excessive proliferation. Replicative senescence is associated with the gradual loss of the telomere — short, repetitive DNA sequences found at the end of the chromosomes. Telomeres are bound by a group of proteins to form a protective cap on the ends of chromosomes. Embryonic stem cells express telomerase — an enzyme that adds the telomeric...
