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Updated: Aug 22, 2026

Assessment of Mitochondrial Functions and Cell Viability in Renal Cells Overexpressing Protein Kinase C Isozymes
Published on: January 7, 2013
Caspase in renal development
Matsuhiko Hayashi1, Takashi Araki
1Department of Internal Medicine, School of Medicine, Keio University, Tokyo, Japan.
Abstract:
Apoptosis is an important process for organogenesis and tissue remodelling in various normal and pathological conditions. In the apoptotic pathway, caspases play central roles, and have been studied extensively in the past decade, while their roles in renal development and organogenesis have not been elucidated yet. To reveal the roles of caspases in renal development, we have examined their activities and apoptosis in microdissected metanephroi. In the developing kidney, apoptotic cells showed expression of caspase-3, and inhibition of either caspase-3 or caspase-9 attenuated growth of metanephroi, indicating that the mitochondrial pathway of apoptosis plays major roles in kidney development. In addition, several growth factors are known to be involved in kidney organogenesis, such as hepatocyte growth factor. We currently are examining the roles of these growth factors and their signal transduction system; their roles in kidney organogenesis should be determined in the future.
Insights
Caspase activity is crucial for kidney development. Inhibiting caspase-3 or caspase-9 in developing kidneys (metanephroi) slowed growth, highlighting the mitochondrial apoptosis pathway
Area of Science:
- Developmental Biology
- Cellular Biology
- Renal Science
Background:
- Apoptosis, or programmed cell death, is vital for organogenesis and tissue remodeling.
- Caspases are key enzymes in the apoptotic pathway, but their role in kidney development remains unclear.
Purpose of the Study:
- To investigate the role of caspases and apoptosis in renal development and organogenesis.
- To elucidate the specific caspase pathways involved in kidney formation.
Main Methods:
- Examination of caspase activity and apoptosis in microdissected metanephroi (developing kidneys).
- Inhibition of caspase-3 and caspase-9 to assess their impact on metanephroi growth.
Main Results:
- Apoptotic cells in the developing kidney expressed caspase-3.
- Inhibition of caspase-3 or caspase-9 significantly attenuated the growth of metanephroi.
- Findings indicate the involvement of the mitochondrial apoptosis pathway in kidney development.
Conclusions:
- The mitochondrial apoptosis pathway, mediated by caspases like caspase-3 and caspase-9, plays a significant role in normal kidney organogenesis.
- Further research is needed to understand the interplay between growth factors, signaling pathways, and caspase activity in kidney development.
Related Concept Videos
Caspases
The Intrinsic Apoptotic Pathway
Cellular Injury V: Apoptosis and Autophagy

