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Ameliorating impaired cardiac function in myocardial infarction using exosome-loaded gallic-acid-containing polyurethane scaffolds

Lookup NU author(s): Dr Ankita Das



This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).


Myocardial infarction (MI) can be tackled by implanting cardiac patches which provide mechanical support to the heart. However, most tissue-engineered scaffolds face difficulty in attenuating oxidative stress, maintaining mechanical stability, and regenerating damaged cardiomyocytes. Here, we fabricated elastic cryogels using polyurethane modified with antioxidant gallic acid in its backbone (PUGA) and further coated them with decellularized extracellular matrix (dECM) to improve adhesiveness, biocompatibility and hemocompatibility. The scaffold was functionalized with exosomes (EXO) isolated from adipose-derived stem cells having regenerative potential. PUGA-dECM + EXO was tested in a rat model with induced MI where echocardiography after 8 weeks of implantation showed significant recovery in treatment group. Histological analysis revealed a decrease in fibrosis after application of patch and promotion of angiogenesis with reduced oxidative stress was shown by immunostaining. Expression of cardiac tissue contractile function marker was also observed in treatment groups. Thus, the proposed biomaterial has a promising application to be utilized as a patch for cardiac regeneration. More detailed studies with larger animal species are needed for using these observations for specific applications.

Publication metadata

Author(s): Das A, Nikhil A, Shiekh PA, Yadav B, Jagavelu K, Kumar A

Publication type: Article

Publication status: Published

Journal: Bioactive Materials

Year: 2024

Volume: 33

Pages: 324-340

Print publication date: 01/03/2024

Online publication date: 24/11/2023

Acceptance date: 16/11/2023

Date deposited: 12/02/2024

ISSN (print): 2097-1192

ISSN (electronic): 2452-199X

Publisher: KeAi Communications Co., Ltd


DOI: 10.1016/j.bioactmat.2023.11.009


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Funder referenceFunder name
Department of Biotechnology, Govt. of India projects (BT/ PR41940/AAQ/1/809/2021 and BT/PR46254/AAQ/1/861/2022)
Science and Engineering Research Board (SERB) projects (IPA/2020/000026, CRG/2021/002179, SPR/2021/ 000544)