Related Experiment Video
Updated: May 7, 2026
12:21
MicroRNA In situ Hybridization for Formalin Fixed Kidney Tissues
Published on: November 30, 2013
The MDM2-p53 pathway: multiple roles in kidney development.
Pediatric Nephrology (Berlin, Germany)
|October 1, 2013
Summary
The MDM2-p53 pathway is crucial for kidney development. Its tight regulation ensures proper nephrogenesis, while disruptions may lead to kidney disease.
Area of Science:
- Developmental biology
- Molecular genetics
- Renal physiology
Background:
- Nephrogenesis involves progenitor cell renewal and terminal differentiation.
- Defects in nephrogenesis cause renal hypoplasia, hypertension, and chronic kidney disease.
- Failure of epithelial cell differentiation leads to renal dysplasia and cystogenesis.
Purpose of the Study:
- To review the role of the MDM2-p53 pathway in kidney development.
- To explore how p53 regulation impacts nephrogenesis and cell fate.
- To investigate the clinical significance of MDM2-p53 pathway variants in renal diseases.
Main Methods:
- Review of loss- and gain-of-function studies on the MDM2-p53 pathway.
- Analysis of evidence implicating p53 in cell fate determination.
- Discussion of post-translational modifications of p53.
- Consideration of high-throughput sequencing technologies for hypothesis testing.
Main Results:
- Tight regulation of p53 levels and activity is essential for nephrogenesis.
- Post-translational modifications of p53 influence cell fate during kidney development.
- MDM2-p53 pathway mutations are common in human cancers.
Conclusions:
- The MDM2-p53 pathway plays a critical role in determining cell fate during kidney development.
- Understanding p53 regulation is key to addressing renal developmental disorders.
- Sequence variants in the MDM2-p53 pathway may increase susceptibility to renal dysgenesis and chronic kidney disease.
Related Concept Videos
02:23Abnormal Proliferation
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 daughter...
01:19Interactions Between Signaling Pathways
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...
03:03mTOR Signaling and Cancer Progression
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...
01:23Negative Regulator Molecules
Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
02:23Master Transcription Regulators
Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
01:22PI3K/mTOR/AKT Signaling Pathway
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 rapamycin-insensitive companion...