Related Experiment Video
Updated: May 6, 2026
09:43
Analyses of Proteinuria, Renal Infiltration of Leukocytes, and Renal Deposition of Proteins in Lupus-prone MRL/lpr Mice
Published on: June 8, 2022
2.6K
Single-Cell Ligand-Receptor Profiling Identifies Targetable Signaling Axes and Therapeutic Candidates in Lupus
Summary
Ligand-receptor signaling in kidney disease defines subtypes and identifies TGFBR2/TNFSF12 as key targets. This research offers potential new therapeutic strategies for nephrotic kidney disease.
Area of Science:
- Immunology
- Molecular Biology
- Bioinformatics
Background:
- Ligand-receptor (LR) signaling is crucial for immune cell dynamics and tumor progression in nephrotic kidney disease.
- Current understanding of LR-based subtyping and therapeutic prediction in this context is limited.
Purpose of the Study:
- To classify nephrotic kidney disease subtypes using LR signaling.
- To identify potential therapeutic targets and repurposable drugs.
Main Methods:
- Single-cell RNA sequencing (scRNA-seq) data integration with Seurat.
- Intercellular signaling modeling using CellChat.
- Consensus clustering to stratify samples based on LR pairs.
- Gene Set Enrichment Analysis (GSEA) and Gene Ontology (GO) enrichment for functional evaluation.
- Immune infiltration profiling with CIBERSORT.
- Molecular docking and molecular dynamics (MD) simulations for ligand-target interactions.
- Knockdown experiments (siRNA) targeting TGFBR2 and TNFSF12.
- Validation assays including RT-qPCR, Western blotting, proliferation, colony formation, and wound-healing assays.
Main Results:
- Identification of eight distinct cell types, including inflammatory macrophages and fibroblasts.
- CellChat analysis revealed significant bidirectional signaling between epithelial and immune cells.
- Two major subtypes were identified: Clust1 with downregulated proliferation pathways and Clust2 with elevated plasma cells, Tregs, and CD8+ T cells.
- Knockdown of TGFBR2 and TNFSF12 impaired cell proliferation, colony formation, and wound closure.
- Mebendazole, progesterone, and demeclocycline were prioritized as potential drug candidates.
- Molecular docking and MD simulations confirmed stable binding affinities and conformations for prioritized ligands.
Conclusions:
- LR-driven crosstalk, particularly involving TGFBR2/TNFSF12, defines distinct nephrotic kidney disease subtypes.
- This study identifies potential drug targets and repurposable candidates for therapeutic intervention.
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