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During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA.  Marilyn Kozak discovered that the sequence RCCAUGG (where R...
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Covalent Organic Framework-Based Theranostic Platforms for Restricting H1N1 Influenza Virus Infection.

Luo-Gang Ding1, Xiang Ji2, Yue-Yue Liu3

  • 1Shandong Key Laboratory of Disease Control and Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, 250100, People's Republic of China.

International Journal of Nanomedicine
|July 29, 2024
PubMed
Summary

This study developed a novel theranostic platform using covalent organic frameworks (COFs) for Influenza A (H1N1) virus infection. The platform integrates drug delivery and imaging, significantly improving therapeutic outcomes and survival rates in infected mice.

Keywords:
controlled releasecrystal porous materialsdiagnosis and therapyfluorescence imagingmicroenvironment-responsive

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Area of Science:

  • Nanotechnology
  • Materials Science
  • Virology

Background:

  • Influenza A (H1N1) poses a significant threat due to its high contagiousness and potential for severe illness.
  • Current treatments like vaccines and antivirals face limitations from viral mutation and drug resistance.

Purpose of the Study:

  • To design and fabricate an integrated theranostic platform for H1N1 virus infection.
  • To leverage covalent organic frameworks (COFs) for enhanced drug delivery and diagnostic capabilities.

Main Methods:

  • Fabrication of a theranostic platform (T705@DATA-COF-Pro) using carboxyl-enriched COFs (DATA-COF) as a nano-carrier.
  • Incorporation of favipiravir (T705), an RNA polymerase inhibitor, and a Cy3-labeled single-stranded DNA (ssDNA) probe.
  • Utilizing the COF's porous structure for drug encapsulation and the ssDNA probe for selective H1N1 nucleic acid binding and fluorescence imaging.

Main Results:

  • The COF core facilitated efficient delivery of the antiviral drug favipiravir.
  • The ssDNA probe enabled selective binding to H1N1, controlling drug release and allowing for fluorescence imaging.
  • The integrated platform demonstrated synergistic therapeutic effects, leading to improved outcomes and significantly prolonged survival in H1N1-infected mouse models.

Conclusions:

  • Covalent organic framework (COF) based nano-preparations show significant potential for combating viral infections like H1N1.
  • This theranostic platform offers a novel approach for the simultaneous detection and treatment of H1N1 virus infection.
  • The study highlights the advantages of COF materials in developing advanced antiviral theranostic agents.