Related Experiment Video
Updated: May 17, 2026

A Modified Precipitation Method to Isolate Urinary Exosomes
Published on: January 16, 2015
Exosomes and the kidney: blaming the messenger
Doreen Yp Fang1, Hamish W King, Jordan Yz Li
1Department of Renal Medicine, Flinders Medical Centre, School of Medicine, Flinders University, Adelaide, South Australia, Australia.
Abstract:
Exosomes are membrane-bound vesicles of endosomal origin, present in a wide range of biological fluids, including blood and urine. They range between 30 and 100 nm in diameter, and consist of a limiting lipid bilayer, transmembrane proteins and a hydrophilic core containing proteins, mRNAs and microRNAs (miRNA). Exosomes can act as extracellular vehicles by which cells communicate, through the delivery of their functional cargo to recipient cells, with many important biological, physiological and pathological implications. The exosome release pathway contributes towards protein secretion, antigen presentation, pathogen transfer and cancer progression. Exosomes and exosome-mediated signalling have been implicated in disease processes such as atherosclerosis, calcification and kidney diseases. Circulating levels of exosomes and extracellular vesicles can be influenced by the progression of renal disease. Advances in methods for purification and analysis of exosomes are leading to potential diagnostic and therapeutic avenues for kidney diseases. This review will focus on biophysical properties and biogenesis of exosomes, their pathophysiological roles and their potential as biomarkers and therapeutics in kidney diseases.
Insights
Exosomes, tiny vesicles in body fluids, facilitate cell communication and are linked to kidney disease progression. Advances in exosome analysis offer new diagnostic and therapeutic potential for renal conditions.
Area of Science:
- Biochemistry and Molecular Biology
- Cell Biology
- Nephrology
Background:
- Exosomes are nanoscale extracellular vesicles involved in intercellular communication.
- They contain proteins, mRNA, and miRNA, influencing biological and pathological processes.
- Exosomes are implicated in diseases like atherosclerosis, calcification, and kidney diseases.
Purpose of the Study:
- To review the biophysical properties and biogenesis of exosomes.
- To explore the pathophysiological roles of exosomes in kidney diseases.
- To discuss the potential of exosomes as biomarkers and therapeutics for renal conditions.
Main Methods:
- Literature review focusing on exosome biogenesis, function, and role in kidney diseases.
- Analysis of current methods for exosome purification and characterization.
- Examination of emerging diagnostic and therapeutic applications of exosomes in nephrology.
Main Results:
- Exosomes play significant roles in cellular signaling, antigen presentation, and disease progression.
- Circulating exosome levels correlate with the advancement of renal disease.
- Improved exosome isolation and analysis techniques are paving the way for clinical applications.
Conclusions:
- Exosomes are crucial mediators of intercellular communication with implications in kidney disease.
- Exosomes hold promise as non-invasive biomarkers for diagnosing and monitoring renal diseases.
- Exosome-based therapies represent a potential new frontier in treating kidney disorders.
Related Concept Videos
Overview of Exosomes
Stahl et al. discovered exosomes in 1983, but the exosomes were initially considered waste products released from the...
Kidney Transplant I: Introduction
Extracorporeal Removal of Drugs: Peritoneal Dialysis and Hemodialysis
Renal Drug Excretion: Tubular Secretion
Renal Drug Excretion: Overview
A nephron consists of two primary structures: the renal corpuscle and the renal tubule. The renal corpuscle contains the glomerulus, a network of capillaries where the first step of renal excretion, glomerular filtration, occurs. Blood pressure forces water, ions, and small molecules out...
External Anatomy of the Kidney
The kidneys are located in the retroperitoneal space on either side of the vertebral column, protected posteriorly by the 11th and 12th ribs. The right kidney sits slightly lower than the left owing to the presence of the liver...
