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Updated: Mar 30, 2026
Analysis of Nephron Composition and Function in the Adult Zebrafish Kidney
Published on: August 9, 2014
An RNA interference screen identifies new avenues for nephroprotection
E R Zynda1, B Schott2, M Babagana1
1Department of Cell Stress Biology, Roswell Park Cancer Institute, Elm and Carlton Streets, Buffalo, NY 14263, USA.
Abstract:
Acute kidney injury is a major public health problem, which is commonly caused by renal ischemia and is associated with a high risk of mortality and long-term disability. Efforts to develop a treatment for this condition have met with very limited success. We used an RNA interference screen to identify genes (BCL2L14, BLOC1S2, C2ORF42, CPT1A, FBP1, GCNT3, RHOB, SCIN, TACR1, and TNFAIP6) whose suppression improves survival of kidney epithelial cells in in vitro models of oxygen and glucose deprivation. Some of the genes also modulate the toxicity of cisplatin, an anticancer agent whose use is currently limited by nephrotoxicity. Furthermore, pharmacological inhibition of TACR1 product NK1R was protective in a model of mouse renal ischemia, attesting to the in vivo relevance of our findings. These data shed new light on the mechanisms of stress response in mammalian cells, and open new avenues to reduce the morbidity and mortality associated with renal injury.
Insights
Researchers identified key genes that protect kidney cells from injury and improve survival. Targeting these genes, like TACR1, offers new therapeutic strategies for acute kidney injury and cisplatin nephrotoxicity.
Area of Science:
- Nephrology
- Molecular Biology
- Genetics
Background:
- Acute kidney injury (AKI) is a significant health concern, often resulting from renal ischemia.
- Current treatments for AKI are limited, leading to high mortality and long-term disability.
- Nephrotoxicity from cisplatin limits its use as an anticancer agent.
Purpose of the Study:
- To identify genes that enhance kidney epithelial cell survival under stress conditions.
- To explore potential therapeutic targets for AKI and cisplatin-induced kidney damage.
- To investigate the role of specific genes in cellular stress response mechanisms.
Main Methods:
- Utilized an RNA interference (RNAi) screen to identify protective genes.
- Tested gene suppression effects on kidney epithelial cells under oxygen and glucose deprivation.
- Assessed the impact of identified genes on cisplatin toxicity in vitro.
- Validated findings using pharmacological inhibition in a mouse model of renal ischemia.
Main Results:
- Identified ten genes (BCL2L14, BLOC1S2, C2ORF42, CPT1A, FBP1, GCNT3, RHOB, SCIN, TACR1, and TNFAIP6) whose suppression improved cell survival.
- Demonstrated that suppression of some genes also reduced cisplatin-induced nephrotoxicity.
- Showed that pharmacological inhibition of TACR1 (NK1R) provided protection in a mouse model of renal ischemia.
Conclusions:
- Gene suppression strategies can enhance kidney cell resilience to ischemic and toxic injury.
- TACR1 and its product NK1R represent a promising therapeutic target for AKI.
- Findings provide novel insights into cellular stress responses and potential AKI treatments.
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