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Targeting Ras genes in kidney disease
Bruce M Hendry1, Claire C Sharpe
1Department of Renal Medicine, Guy's King's St. Thomas' School of Medicine, King's College, London, UK. bruce.hendry@kcl.ac.uk
Abstract:
Certain changes in cellular function are characteristic of renal disease. Foremost among these is the excessive proliferation of cells, but other phenotypic changes include dysregulated apoptosis, migration, adhesion, contraction, secretion, and receptor expression. Recent advances in cell biology have revealed an extensive role for the small monomeric GTPases of the Ras superfamily in the control of these cellular events through intracellular signalling cascades. The specific Ras genes appear to play discrete and identifiable roles in a range of complex signalling networks. These insights lead to the possibility of targeting Ras genes in a specific manner in renal therapies. For example, the process of renal cell proliferation might be sensitive to downregulation of Harvey Ras and Kirsten Ras; targeting of Rho A and related species may modulate cell migration, fibrosis, and intrarenal vasoconstriction. Possible strategies for such modulation could include the use of RNA-interacting agents such as antisense DNA and si-RNA and the use of small molecules acting on Ras directly or on related signalling molecules such as Rho kinase and Raf kinase.
Insights
Ras superfamily GTPases control cellular functions in kidney disease. Targeting specific Ras genes like Harvey Ras, Kirsten Ras, and Rho A offers potential therapeutic strategies for renal cell proliferation and migration.
Area of Science:
- Cell biology
- Renal medicine
- Molecular signaling
Background:
- Renal diseases involve cellular dysfunction, including excessive proliferation, altered apoptosis, migration, and secretion.
- The Ras superfamily of small monomeric GTPases plays a crucial role in regulating these cellular events via intracellular signaling cascades.
Purpose of the Study:
- To explore the potential of targeting specific Ras genes for novel renal therapies.
- To identify Ras GTPases involved in key cellular processes characteristic of kidney disease.
Main Methods:
- Review of recent advances in cell biology and intracellular signaling.
- Analysis of the roles of specific Ras genes (e.g., Harvey Ras, Kirsten Ras, Rho A) in cellular functions.
Main Results:
- Specific Ras genes have distinct roles in complex signaling networks controlling cellular functions.
- Harvey Ras and Kirsten Ras may be targeted to reduce renal cell proliferation.
- Rho A and related GTPases could modulate cell migration, fibrosis, and vasoconstriction.
Conclusions:
- Targeting Ras GTPases presents a promising therapeutic avenue for kidney diseases.
- Strategies may involve RNA-interacting agents (antisense DNA, siRNA) or small molecules targeting Ras or related kinases (Rho kinase, Raf kinase).
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