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Daily oral administration of probiotics engineered to constantly secrete short-chain fatty acids effectively prevents myocardial injury from subsequent ischaemic heart disease

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Abstract

AIM: Given the extremely limited regeneration potential of the heart, one of the most effective strategies to reduce the prevalence and mortality of coronary artery disease is prevention. Short-chain fatty acids (SCFAs), which are by-products of beneficial probiotics, have been reported to possess cardioprotective effects. Despite their beneficial roles, delivering SCFAs and maintaining their effective concentration in plasma present major challenges. Therefore, in the present study, we aimed to devise a strategy to prevent coronary heart disease effectively by using engineered probiotics to continuously release SCFAs in vivo.

Methods and results: We engineered a novel probiotic cocktail, EcN_TL, from the commercially available Escherichia coli Nissle 1917 strain to continuously secrete SCFAs by introducing the propionate and butyrate biosynthetic pathways. Oral administration of EcN_TL enhanced and maintained an effective concentration of SCFAs in the plasma. As a preventative strategy, we observed that daily intake of EcN_TL for 14 days prior to ischemia-reperfusion injury significantly reduced myocardial injury and improved cardiac performance compared to EcN administration. We uncovered that EcN_TL's protective mechanisms included reducing neutrophil infiltration into the infarct site and promoting the polarization of wound-healing macrophages. We further revealed that SCFAs at plasma concentration protected cardiomyocytes from inflammation by suppressing the NF-κB activation pathway.

Conclusions: These data provide strong evidence to support the use of SCFA-secreting probiotics to prevent coronary heart disease. Since SCFAs also play a key role in other metabolic diseases, EcN_TL can potentially be used to treat a variety of other diseases.

© The Author(s) 2024. Published by Oxford University Press on behalf of the European Society of Cardiology.
Original languageEnglish
Pages (from-to)1737-1751
JournalCardiovascular Research
Volume120
Issue number14
Online published8 Jun 2024
DOIs
Publication statusPublished - Oct 2024

Bibliographical note

© The Author(s) 2024. Published by Oxford University Press on behalf of the European Society of Cardiology.

Funding

This research was funded by the following funding: Research Grants Council, University Grants Committee (CityU 11102122 to T.C.K.L.), Health and Medical Research Fund, Food and Health Bureau, Hong Kong (20190932 to TCKL), Tung Biomedical Sciences Centre, City University of Hong Kong (to K.T.C., T.C.K.L., and K.W.B.); Croucher Foundation (9509002 to K.T.C.), and National Research Foundation of Korea (grant numbers RS-2023-00219981 to K.W.B. and RS-2023-00220207 to H.-J.P.).

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Research Keywords

  • Coronary heart disease
  • Myocardial infarction
  • Prevention
  • Probiotics
  • Short-chain fatty acid

Publisher's Copyright Statement

  • This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

RGC Funding Information

  • RGC-funded

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