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Curcumin-primed exosomes mitigate endothelial cell dysfunction during hyperhomocysteinemia.

A Kalani¹, P K Kamat¹, P Chaturvedi¹

¹Department of Physiology and Biophysics, School of Medicine, University of Louisville, Louisville, KY 40202, USA.

|May 1, 2014

Summary

This summary is machine-generated.

Curcumin-primed exosomes (CUR-EXO) from mouse brain endothelial cells (MBECs) can restore blood-brain barrier (BBB) integrity. These exosomes alleviate damage caused by hyperhomocysteinemia, offering potential for treating cerebral diseases.

Keywords:

Blood–brain barrier Curcumin Endothelial cells Exosomes Homocysteine Oxidative stress Permeability Tight junctions

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Area of Science:

Neuroscience
Cell Biology
Biotechnology

Background:

Exosomes are nano-units (<200 nm) in extracellular fluid with non-immunogenic properties and blood-brain barrier (BBB) crossing ability.
Priming cells with therapeutic agents may enhance exosome cargo for improved therapeutic outcomes.
Curcumin, with its anti-oxidative and anti-inflammatory properties, is a promising agent for cerebral diseases.

Purpose of the Study:

To investigate if mouse brain endothelial cells (MBECs) primed with curcumin release exosomes that can recover endothelial cell (EC) layer permeability.
To evaluate the therapeutic potential of curcumin-primed exosomes (CUR-EXO) in a model of BBB disruption.

Main Methods:

MBECs were treated with curcumin, and exosomes were isolated via ultracentrifugation and immunoprecipitation.
Western blot and immunocytochemistry assays were used to detect junction protein expression (ZO-1, claudin-5, occludin, VE-cadherin).
Endothelial cell permeability was assessed using a Fluorescein isothiocyanate-Bovine serum albumin (FITC-BSA) leakage assay.

Main Results:

CUR-EXO alleviated oxidative stress in homocysteine-treated ECs.
CUR-EXO restored the expression of tight junction proteins (ZO-1, claudin-5, occludin) and adherent junction protein (VE-cadherin).
CUR-EXO mitigated the increased EC layer permeability induced by hyperhomocysteinemia.

Conclusions:

Curcumin-primed exosomes (CUR-EXO) show potential for treating cerebral diseases, addressing challenges in drug delivery.
This approach offers novel translational therapies for cerebral diseases by utilizing primed exosomes to maintain therapeutic effects.