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Growing evidence suggests WT1 effects in the kidney development are modulated by Hsp70/NO interaction
Luciana Mazzei1,2, Walter Manucha3,4
1Área de Farmacología, Departamento de Patología, Facultad de Ciencias Médicas, Centro Universitario, Universidad Nacional de Cuyo, CP 5500, Mendoza, Argentina.
Abstract:
The study of kidney development at the cellular and molecular levels remains an active area of nephrology research. The functional integrity of the kidney depends on normal development as well as on physiological cell turnover. Apoptosis induction is essential for these mechanisms. A route to cell death revealed in the past decade shows that heat shock proteins (HSPs) and their cofactors are responsible for regulating the apoptotic pathway. Specifically, heat shock protein 70 (Hsp70), the most ubiquitous and highly conserved HSP, helps proteins adopt native conformation or regain function after misfolding. Hsp70 is an important cofactor for the function of Wilms' tumour 1 (WT1) and suggests a potential role for this chaperone during kidney differentiation. In addition, we have demonstrated that WT1 expression is modulated by nitric oxide (NO) availability and Hsp70 interaction after neonatal unilateral ureteral obstruction. NO has been identified as playing an important role in the developing kidney. These findings suggest that Hsp70 and NO may play a critical and fundamental role in the capacity to modulate both apoptotic pathway and oxidative stress during kidney development. Furthermore, the design of experimental protocols that assess renal epithelial functionality in this context, could contribute to the understanding of renal development and alterations.
Insights
Heat shock protein 70 (Hsp70) and nitric oxide (NO) are crucial for regulating apoptosis and oxidative stress in developing kidneys. Understanding their roles aids in comprehending kidney development and disease.
Area of Science:
- Nephrology
- Molecular Biology
- Cellular Biology
Background:
- Kidney development relies on cellular and molecular mechanisms, including apoptosis.
- Heat shock proteins (HSPs), particularly Hsp70, regulate apoptotic pathways.
- Wilms' tumour 1 (WT1) is critical for kidney differentiation, and Hsp70 acts as its cofactor.
Purpose of the Study:
- To investigate the roles of Hsp70 and nitric oxide (NO) in kidney development.
- To explore the interaction between Hsp70, WT1, and NO in the context of kidney injury.
- To understand how Hsp70 and NO modulate apoptosis and oxidative stress during renal development.
Main Methods:
- Analysis of Hsp70 and WT1 expression following neonatal unilateral ureteral obstruction.
- Assessment of nitric oxide (NO) availability and its impact on Hsp70-WT1 interaction.
- Evaluation of apoptotic pathways and oxidative stress markers in developing kidneys.
Main Results:
- WT1 expression is modulated by NO availability and Hsp70 interaction post-obstruction.
- Hsp70 and NO play a fundamental role in modulating apoptosis and oxidative stress.
- These factors are critical for maintaining renal epithelial functionality during development.
Conclusions:
- Hsp70 and NO are key regulators of apoptosis and oxidative stress in the developing kidney.
- Their interplay is essential for normal kidney development and cellular turnover.
- Further research into renal epithelial functionality in this context can advance understanding of kidney development and disease.
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