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Updated: Nov 22, 2025
Isolation and Culture of Cells from the Nephrogenic Zone of the Embryonic Mouse Kidney
Published on: April 22, 2011
Molecular Mechanisms of Renal Progenitor Regulation: How Many Pieces in the Puzzle?
Anna Julie Peired1, Maria Elena Melica1, Alice Molli2
1Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Viale Morgagni 50, 50134 Florence, Italy.
Abstract:
Kidneys of mice, rats and humans possess progenitors that maintain daily homeostasis and take part in endogenous regenerative processes following injury, owing to their capacity to proliferate and differentiate. In the glomerular and tubular compartments of the nephron, consistent studies demonstrated that well-characterized, distinct populations of progenitor cells, localized in the parietal epithelium of Bowman capsule and scattered in the proximal and distal tubules, could generate segment-specific cells in physiological conditions and following tissue injury. However, defective or abnormal regenerative responses of these progenitors can contribute to pathologic conditions. The molecular characteristics of renal progenitors have been extensively studied, revealing that numerous classical and evolutionarily conserved pathways, such as Notch or Wnt/β-catenin, play a major role in cell regulation. Others, such as retinoic acid, renin-angiotensin-aldosterone system, TLR2 (Toll-like receptor 2) and leptin, are also important in this process. In this review, we summarize the plethora of molecular mechanisms directing renal progenitor responses during homeostasis and following kidney injury. Finally, we will explore how single-cell RNA sequencing could bring the characterization of renal progenitors to the next level, while knowing their molecular signature is gaining relevance in the clinic.
Insights
Kidney progenitor cells maintain homeostasis and aid regeneration after injury. Understanding their molecular pathways is crucial for treating kidney diseases and advancing regenerative medicine.
Area of Science:
- Nephrology
- Stem Cell Biology
- Regenerative Medicine
Background:
- Kidneys contain progenitor cells in glomerular and tubular compartments essential for homeostasis and repair.
- These progenitors can proliferate and differentiate into segment-specific cells under physiological and injury conditions.
- Dysfunctional progenitor responses can lead to kidney pathology.
Purpose of the Study:
- To review molecular mechanisms governing renal progenitor cell behavior during homeostasis and injury.
- To explore the role of various signaling pathways in renal progenitor regulation.
- To discuss the potential of single-cell RNA sequencing in advancing renal progenitor characterization.
Main Methods:
- Literature review of studies on renal progenitor cells and their molecular regulation.
- Synthesis of findings on classical pathways (e.g., Notch, Wnt/β-catenin) and other factors (e.g., retinoic acid, TLR2).
- Discussion of emerging technologies like single-cell RNA sequencing.
Main Results:
- Renal progenitors are critical for kidney maintenance and regeneration.
- Key molecular pathways including Notch, Wnt/β-catenin, retinoic acid, renin-angiotensin-aldosterone system, TLR2, and leptin influence progenitor function.
- Defects in progenitor response contribute to kidney disease.
Conclusions:
- Molecular signatures of renal progenitors are vital for understanding kidney health and disease.
- Advanced techniques like single-cell RNA sequencing offer new insights into progenitor biology.
- Further research into these pathways could lead to novel therapeutic strategies for kidney regeneration.
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