Vaksin mRNA eksperimental tunjukkan perlindungan terhadap berbagai virus Ebola

Sebuah vaksin mRNA eksperimental telah menunjukkan efektivitas terhadap tiga jenis virus Ebola dalam uji coba pada hewan pengerat. Vaksin ini menargetkan virus Zaire, Sudan, dan Bundibugyo. Para peneliti mengembangkannya di tengah wabah virus Bundibugyo yang sedang berlangsung di Afrika.

Yanfeng Yao dan rekan-rekannya di Institut Virologi Wuhan menciptakan vaksin tersebut dengan menggabungkan urutan mRNA untuk glikoprotein dari setiap virus bersama dengan nukleoprotein bersama di dalam nanopartikel lipid. Dalam pengujian, tikus yang diimunisasi memperoleh perlindungan penuh terhadap virus Zaire dan Sudan serta perlindungan yang kuat terhadap Bundibugyo. Hamster juga mendapatkan perlindungan penuh dari paparan virus Sudan.

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Photorealistic lab scene depicting DoriVac DNA origami vaccine triggering strong immune responses in mouse and organ chip models, as an advance over mRNA vaccines.
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DNA origami “DoriVac” shows strong immune activation in early tests, offering a potential complement to mRNA vaccines

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Researchers at Harvard’s Wyss Institute and Dana-Farber Cancer Institute report that a DNA origami-based vaccine platform called DoriVac generated robust immune responses in mice and in a human lymph node “Organ Chip” model. The team says the approach could be easier to store and manufacture than lipid nanoparticle–delivered mRNA vaccines, though the work remains preclinical. The results were published in Nature Biomedical Engineering.

Moderna confirmed ongoing work on an mRNA vaccine for hantavirus following a deadly outbreak on a Dutch cruise ship. The effort, in partnership with Korea University, began in 2023 and shows promise but remains years from completion.

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The World Health Organization has declared a public health emergency over an outbreak of the Bundibugyo strain of Ebola virus in the Democratic Republic of the Congo and Uganda. The move comes as researchers urge faster development of vaccines for lesser-known Ebola strains.

TBE cases in Sweden have tripled over ten years despite rising vaccinations. Åke Lundkvist, professor of virology at Uppsala University, suspects the virus may have changed, reducing vaccine effectiveness. Researchers are now analyzing 12,000 ticks to investigate.

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Egypt's Ministry of Health aims to produce 140 million human vaccine doses annually by 2030 under its Vaccine City project. Health Minister Khaled Abdel Ghaffar reviewed the project's progress, emphasizing efforts for self-sufficiency and exports to regional and international markets.

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