Novel controlled-release polylactic-co-glycolic acid (PLGA) nanoparticles for sodium thiosulphate, a hydrogen sulphide donor, retains pro-angiogenic potential of hydrogen sulphide


Hydrogen sulphide (H2S) is an endogenous gaseous signalling molecule observing cardioprotective qualities in various experimental models. However, its therapeutic application is limited due to rapid release in vivo and potential toxicity. Controlled-release nanoparticles (NPs), such as polylactic-co-glycolic acid (PLGA) NPs entrapping H2S compounds may address these issues. PLGA NPs’ encapsulating sodium thiosulphate (STS), a H2S donor, were prepared by emulsification and sonication-solvent evaporation in polyvinyl alcohol (PVA). Sonication time was varied between 15 and 45 s and PVA concentration varied between 0.3 and 0.7% w/v. NPs were characterised, cellular uptake, H2S generation and encapsulated STS angiogenic potential was explored. An increase in sonication time as well as PVA concentration decreased NPs size resulting in an increase in STS release kinetics and cellular uptake over 24 h. Encapsulated STS gave a controlled release of H2S over 24 h whereas non-encapsulated STS peaked at 2 h. Finally, we observed entrapped STS maintained pro-angiogenic potential. PLGA NPs are a promising controlled-release delivery system with potential to offer sustained H2S levels. Results of this study demonstrate formulation of STS-loaded PLGA NPs provides a controlled-release of STS and therefore H2S. NPs are internalised into cells and critically, PLGA NPs are able to maintain the pro-angiogenic potential of H2S.

Publication DOI:
Divisions: College of Health & Life Sciences > Aston Medical School
College of Health & Life Sciences > School of Optometry > Optometry
College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Chemical Engineering & Applied Chemistry
College of Health & Life Sciences > Aston Medical School > Translational Medicine Research Group (TMRG)
College of Health & Life Sciences > School of Biosciences > Cellular and Molecular Biomedicine
Additional Information: © 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Uncontrolled Keywords: General Materials Science,Biomedical Engineering,Bioengineering
Publication ISSN: 1745-8099
Last Modified: 18 Jun 2024 07:41
Date Deposited: 21 Apr 2022 10:35
Full Text Link:
Related URLs: https://www.tan ... 80.2022.2060963 (Publisher URL)
PURE Output Type: Article
Published Date: 2022-12-31
Published Online Date: 2022-04-08
Accepted Date: 2022-03-26
Authors: Marwah, M. K. (ORCID Profile 0000-0003-4881-003X)
Shehzad, S.
Shokr, H.
Sacharczuk, J.
Wang, K. (ORCID Profile 0000-0001-6239-6344)
Ahmad, S. (ORCID Profile 0000-0002-9294-0475)
Sanchez-Aranguren, L. (ORCID Profile 0000-0002-4663-5752)



Version: Published Version

License: Creative Commons Attribution

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