AI Article Synopsis

  • The use of traditional drugs for cardiac injury is limited by their low specificity for the heart, leading to ineffective treatment.
  • Nanostructured lipid carriers (NLCs) have been developed to deliver medications more effectively, but they tend to target the liver more than the heart.
  • A new cardiac extracellular matrix (ECM) hydrogel-NLC composite has been created, which delivers drugs like colchicine directly to the heart, improving recovery after heart attacks in mice while enhancing overall treatment effectiveness.

Article Abstract

A challenge in treating cardiac injury is the low heart-specificity of the drugs. Nanostructured lipid carriers (NLCs) are a relatively new format of lipid nanoparticles which have been used to deliver RNA and drugs. However, lipid nanoparticles exhibit higher affinity to the liver than the heart. To improve the delivery efficiency of NLCs into the heart, NLCs can be embedded into a scaffold and be locally released. In this study, a cardiac extracellular matrix (ECM) hydrogel-NLC composite was developed as a platform for cardiac repair. ECM-NLC composite gels at physiological conditions and releases payloads into the heart over weeks. ECM-NLC hydrogel carrying colchicine, an anti-inflammation agent, improved cardiac repair after myocardial infarction in mice. Transcriptome analysis indicated that Egfr downstream effectors participated in ECM-NLC-colchicine induced heart repair. In conclusion, ECM-NLC hydrogel is a potential platform for sustained and localized delivery of biomolecules into the heart, and loading appropriate medicines further increases the therapeutic efficacy of ECM-NLC hydrogel for cardiovascular diseases.

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Source
http://dx.doi.org/10.1016/j.biomaterials.2023.122364DOI Listing

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