Title:TRAIL and EGFR Pathways Targeting microRNAs are Predominantly
Regulated in Human Diabetic Nephropathy
Volume: 12
Issue: 2
Author(s): Bhuvnesh Rai, Akshara Pande and Swasti Tiwari*
Affiliation:
- Department of Molecular Medicine & Biotechnology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
Keywords:
Renal transcriptome, renal biopsy, urinary exosomes, urinary extracellular vesicles, diabetic nephropathy, vesicles, GEO, ESRD.
Abstract:
Background: Unbiased microRNA profiling of renal tissue and urinary extracellular vesicles
(uEVs) from diabetic nephropathy (DN) subjects may unravel novel targets with diagnostic and
therapeutic potential. Here we used the miRNA profile of uEVs and renal biopsies from DN subjects
available on the GEO database.
Methods: The miR expression profiles of kidney tissue (GSE51674) and urinary exosomes
(GSE48318) from DN and control subjects were obtained by GEO2R tools from Gene Expression Omnibus
(GEO) databases. Differentially expressed miRNAs in DN samples, relative to controls, were
identified using a bioinformatic pipeline. Targets of miRs commonly regulated in both sample types
were predicted by miRWalk, followed by functional gene enrichment analysis. Gene targets were identified
by MiRTarBase, TargetScan and MiRDB.
Results: Eight miRs, including let-7c, miR-10a, miR-10b and miR-181c, were significantly regulated
in kidney tissue and uEVs in DN subjects versus controls. The top 10 significant pathways targeted by
these miRs included TRAIL, EGFR, Proteoglycan syndecan, VEGF and Integrin Pathway. Gene target
analysis by miRwalk upon validation using ShinyGO 70 targets with significant miRNA-mRNA interaction.
Conclusion: In silico analysis showed that miRs targeting TRAIL and EGFR signaling are predominately
regulated in uEVs and renal tissue of DN subjects. After wet-lab validation, the identified miRstarget
pairs may be explored for their diagnostic and/or therapeutic potential in diabetic nephropathy.