Related Experiment Video
Updated: Jan 3, 2026

14:57
Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
9.9K
New insights into p53 functions through its target microRNAs
Jun-Ming Liao1, Bo Cao1, Xiang Zhou1
1Department of Biochemistry & Molecular Biology and Tulane Cancer Center, Tulane University School of Medicine, New Orleans, LA 70112, USA.
Journal of Molecular Cell Biology
|April 18, 2014
Summary
The p53 pathway, crucial in cancer prevention, involves microRNAs (miRNAs) that regulate its activity. This review explores p53 miRNA targets, their roles in stress responses, and broader disease implications beyond cancer.
Area of Science:
- Molecular Biology
- Oncology
- Genetics
Background:
- The tumor suppressor p53 pathway is critical for preventing cancer development and progression.
- Alterations in the p53 pathway are frequently observed across various human cancers.
- MicroRNAs (miRNAs) have emerged as key downstream regulators of the p53 pathway.
Purpose of the Study:
- To review identified p53 microRNA targets.
- To discuss the regulatory roles of these miRNAs in p53 activity.
- To explore the involvement of p53-miRNA interactions in broader human diseases.
Main Methods:
- Literature review of identified p53 miRNA targets.
- Analysis of studies on miRNA regulation of p53.
- Synthesis of information on p53-miRNA crosstalk in disease.
Main Results:
- Numerous p53 miRNA targets have been identified.
- These miRNAs exhibit complex regulatory functions on p53 activity.
- P53-miRNA interactions fine-tune cellular stress responses.
Conclusions:
- MicroRNAs are integral to the p53 pathway's function.
- P53-miRNA networks mediate crosstalk with other signaling pathways.
- Understanding these interactions expands the role of p53 in human diseases, including cancer.
Related Concept Videos
Abnormal Proliferation
5.0K
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
5.0K
MicroRNAs
3.7K
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...
3.7K
MicroRNAs
23.8K
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...
23.8K
piRNA - Piwi-interacting RNAs
7.4K
PIWI-interacting RNAs, or piRNAs, are the most abundant short non-coding RNAs. More than 20,000 genes have been found in humans that code for piRNAs while only 2000 genes have been found for miRNAs. piRNAs can act at the transcriptional and post-transcriptional levels and have a vital role in silencing transposable elements present in germ cells. They are also involved in epigenetic silencing and activation. Previously, they were thought to function only in germ cells but new evidence suggests...
7.4K
Interactions Between Signaling Pathways
7.1K
Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
7.1K
PI3K/mTOR/AKT Signaling Pathway
5.2K
The mammalian target of rapamycin (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1 (mTORC1) and mTOR complex 2 (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast, mTORC2 consists of a...
5.2K

