A Novel Conductive Polypyrrole‐Chitosan Hydrogel Containing Human Endometrial Mesenchymal Stem Cell‐Derived Exosomes Facilitated Sustained Release for Cardiac Repair

Myocardial infarction (MI) results in cardiomyocyte necrosis and conductive system damage, leading to sudden cardiac death and heart failure. Studies have shown that conductive biomaterials can restore cardiac conduction, but cannot facilitate tissue regeneration. This study aims to add regenerative...

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Bibliographic Details
Published in:Advanced healthcare materials 2024-04, Vol.13 (10), p.e2304207-n/a
Main Authors: Yan, Changping, Wang, Xinzhu, Wang, Qi, Li, Haiyan, Song, Huifang, Zhou, Jingli, Peng, Zexu, Yin, Wenjuan, Fan, Xuemei, Yang, Kun, Zhou, Bingrui, Liang, Yuxiang, Jiang, Zengyu, Shi, Yuwei, Zhang, Sanyuan, He, Sheng, Li, Ren‐Ke, Xie, Jun
Format: Article
Language:English
Subjects:
1-Phosphatidylinositol 3-kinase
AKT protein
Angiogenesis
Apoptosis
Biomaterials
Biomedical materials
cardiac function
Cardiomyocytes
Chitosan
Conduction
conductive biomaterial
Congestive heart failure
Controlled release
Electrical conduction
endometrial stem cell
Endometrium
Epidermal growth factor
exosome
Exosomes
Fibrosis
Growth factors
Hydrogels
Hydrogen peroxide
Kinases
Mesenchymal stem cells
Myocardial infarction
Necrosis
Polypyrroles
Regeneration (physiology)
Stem cells
Sustained release
Tissue engineering
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Summary:Myocardial infarction (MI) results in cardiomyocyte necrosis and conductive system damage, leading to sudden cardiac death and heart failure. Studies have shown that conductive biomaterials can restore cardiac conduction, but cannot facilitate tissue regeneration. This study aims to add regenerative capabilities to the conductive biomaterial by incorporating human endometrial mesenchymal stem cell (hEMSC)‐derived exosomes (hEMSC‐Exo) into poly‐pyrrole‐chitosan (PPY‐CHI), to yield an injectable hydrogel that can effectively treat MI. In vitro, PPY‐CHI/hEMSC‐Exo, compared to untreated controls, PPY‐CHI, or hEMSC‐Exo alone, alleviates H2O2‐induced apoptosis and promotes tubule formation, while in vivo, PPY‐CHI/hEMSC‐Exo improves post‐MI cardiac functioning, along with counteracting against ventricular remodeling and fibrosis. All these activities are facilitated via increased epidermal growth factor (EGF)/phosphoinositide 3‐kinase (PI3K)/AKT signaling. Furthermore, the conductive properties of PPY‐CHI/hEMSC‐Exo are able to resynchronize cardiac electrical transmission to alleviate arrythmia. Overall, PPY‐CHI/hEMSC‐Exo synergistically combines the cardiac regenerative capabilities of hEMSC‐Exo with the conductive properties of PPY‐CHI to improve cardiac functioning, via promoting angiogenesis and inhibiting apoptosis, as well as resynchronizing electrical conduction, to ultimately enable more effective MI treatment. Therefore, incorporating exosomes into a conductive hydrogel provides dual benefits in terms of maintaining conductivity, along with facilitating long‐term exosome release and sustained application of their beneficial effects. Incorporating human endometrial mesenchymal stem cell‐derived exosomes (hEMSC‐Exo) into poly‐pyrrole‐chitosan (PPY‐CHI) yields an injectable hydrogel, possessing conductive and sustained exosome release properties. PPY‐CHI/hEMSC‐Exo counteracts against H2O2‐induced apoptosis among H9c2, and promotes angiogenesis among human umbilical cord vein endothelial cells. In vivo, it combines the cardiac regenerative capabilities of hEMSC‐Exo with PPY‐CHI conductive properties to alleviate myocardial infarction and arrhythmia.
ISSN:2192-2640
2192-2659
2192-2659
DOI:10.1002/adhm.202304207