Editorial disclosure: This article is original educational commentary based on the cited literature. It summarizes and interprets published evidence rather than reproducing source text. Clinical decisions should be based on the full original publications, current guidelines, regulatory status, and individual patient factors.
Why conventional explanations are incomplete
Sepsis-associated acute kidney injury remains one of the most challenging forms of AKI. Traditional explanations emphasize hypoperfusion, tubular injury and altered hemodynamics, but these mechanisms do not fully explain the heterogeneity of kidney dysfunction in septic patients.
Integrative spatial transcriptomics combined with single-cell RNA sequencing and other multi-omics approaches can identify where inflammatory, vascular and epithelial programs are activated. Endothelial activation, immune-cell recruitment, cytokine signaling and epithelial responses interact dynamically rather than occurring as isolated events.
From stage to endotype
Two patients with the same KDIGO stage may have different biological processes driving dysfunction and may ultimately require different therapeutic targets. Future systems may classify patients according to dominant inflammatory, endothelial, tubular or repair-associated pathways.
Most spatial studies remain research tools. Translation requires standardized sampling, validated biomarkers and scalable analytical pipelines. Precision AKI may depend on understanding where and why injury occurs, not only how much creatinine has risen.
Key clinical takeaways
- SA-AKI is biologically heterogeneous.
- Spatial transcriptomics can identify localized inflammatory, vascular and tubular niches.
- Molecular endotyping may eventually improve precision AKI care.
References
- Uhlig M, et al. Insights from integrative spatial transcriptomics in sepsis-associated acute kidney injury. Nat Rev Nephrol. Published July 28, 2026. DOI.