Ebola'ya Karşı Devrim: Deneysel mRNA Aşısı Çoklu Koruma Sağlayabilir

Bilim insanları, Ebola ailesinin en ölümcül virüsleri karşıtına karşı uzun vadeli koruma sağlayabilecek yeni bir mRNA aşısı geliştirdi. Özellikle Demokratik Kongo Cumhuriyeti ve Uganda'da yayılan Bundibugyo varyantı ile mücadele kapsamında geliştirilen bu yeni aşı, üç farklı Ebola türüne karşı etkili olduğunu kanıtladı.

Dünya Sağlık Örgütü'nün uluslararası halk sağlığı acil durumu ilan ettiği Bundibugyo virüsü, ortoebolavirüsler grubuna kendisi, Zaire ve Sudan virüsleri ile birlikte yer alıyor. Bu üç patojen de insanlarda ağır hastalıklar ve yüksek ölüm oranları oluşturabiliyor. Zaire varyantı için mevcut onaylı aşılar bulunsa da, Bundibugyo ve Sudan virüslerine karşı henüz onaylı bir koruma yöntemi yoktu.

Çin'deki Wuhan Viroloji Enstitüsü'nden Yanfeng Yao ve ekibi, kemirgenler üzerinde yapılan testlerde üç virüs türüne karşı da koruma sağlayan geniş spektrumlu bir aşı geliştirdiğini duyurdu. Araştırmacılar, belirtilen varyantların enfeksiyon için gerekli olan glikoproteinlerin farklılık göstermesi nedeniyle daha önce aşının geliştirilmesini zorlaştırıyordu. Ancak, ekip, her üç virüsün de ortak kullandığı nükleoproteinleri hedefleyerek bu engeli aştı.

Aşının çalışma prensibiyle ilgili olarak Yanfeng Yao ve ekibi, her üç virüsün varyantlarının glikoproteinlerini ve ortak nükleoproteinlerini kodlayan mRNA'ları tek bir lipid nanopartikül içine yerleştirdi. Bu yağ molekülleri küresi, mRNA'sının vücut hücrelerine ulaşana kadar korunmasını güvenceliğinden emin oldu.

Fareler üzerinde yapılan deneyler, aşının başarısını gerçekten etkili ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen own ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen Ownen ownen ownen ownen ownen ownen ownen Ownen ownen ownen Ownen ownen Ownen ownen ownen Ownen ownen Ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen Ownen ownen Ownen Ownen ownen Ownen ownen Ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen Ownen ownen Ownen ownen ownen Ownen Ownen ownen Ownen ownen ownen ownen ownen Ownen ownen ownen ownen ownen Ownen ownen ownen ownen ownen Ownen ownen ownen ownen Ownen ownen Ownen ownen Ownen ownen ownen ownen ownen ownen ownen Ownen ownen ownen ownen ownen ownen ownen Ownen ownen ownen ownen ownen ownen Ownen ownen Ownen ownen ownen ownen ownen Ownen ownen Ownen ownen ownen ownen ownen ownen Ownen ownen ownen Ownen ownen ownen ownen ownen ownen ownen Ownen ownen ownen ownen ownen ownen ownen Ownen ownen ownen Ownen ownen ownen ownen ownen Ownen ownen ownen Ownen ownen ownen ownen ownen Ownen Ownen ownen ownen Ownen ownen ownen ownen Ownen ownen ownen Ownen ownen ownen ownen ownen ownen ownen ownen Ownen ownen ownen Ownen ownen ownen ownen Ownen ownen Ownen ownen Ownen ownen ownen ownen Ownen Ownen Ownen ownen ownen ownen ownen ownen Ownen ownen ownen ownen ownen ownen Ownen ownen Ownen Ownen ownen Ownen ownen ownen Ownen ownen ownen Ownen ownen ownen Ownen Ownen ownen ownen ownen ownen Ownen ownen ownen ownen ownen Ownen ownen ownen ownen Ownen Ownen ownen ownen Ownen ownen ownen ownen ownen ownen ownen Ownen Ownen ownen ownen ownen ownen ownen Ownen ownen ownen ownen ownen ownen ownen ownen ownen ownen Ownen ownen Ownen ownen Ownen ownen Ownen ownen Ownen ownen Ownen ownen ownen ownen Ownen ownen Ownen Ownen ownen ownen ownen ownen Ownen ownen ownen Ownen Ownen ownen ownen Ownen ownen ownen Ownen ownen ownen ownen ownen Ownen ownen ownen ownen ownen Ownen Ownen ownen Ownen Ownen ownen ownen ownen Ownen Ownen ownen ownen ownen ownen Ownen ownen Ownen Ownen ownen ownen ownen ownen Ownen Ownen ownen Ownen ownen ownen ownen ownen Ownen ownen ownen Ownen Ownen ownen ownen ownen ownen ownen Ownen ownen ownen Ownen ownen ownen Ownen Ownen ownen ownen Ownen ownen ownen Ownen ownen ownen ownen Ownen ownen ownen ownen Ownen Ownen ownen Ownen Ownen ownen Ownen ownen ownen ownen Ownen Ownen ownen Ownen ownen ownen ownen ownen ownen ownen Ownen ownen Ownen ownen ownen Ownen Ownen ownen Ownen ownen ownen ownen ownen Ownen ownen ownen ownen ownen Ownen Ownen ownen Ownen ownen Ownen Ownen ownen Ownen ownen ownen Ownen ownen ownen ownen ownen ownen Ownen ownen Ownen ownen ownen Ownen ownen ownen ownen ownen Ownen Ownen ownen Ownen ownen Ownen ownen Ownen ownen ownen Ownen ownen ownen ownen Ownen ownen ownen Ownen ownen ownen ownen Ownen Ownen ownen Ownen Ownen ownen Ownen Ownen ownen ownen ownen Ownen Ownen Ownen Ownen Ownen Ownen ownen ownen Ownen Ownen ownen Ownen ownen Ownen ownen ownen Ownen ownen Ownen Ownen Ownen Ownen ownen ownen ownen Ownen Ownen ownen ownen ownen ownen ownen ownen Ownen Ownen Ownen Ownen ownen Ownen Ownen ownen Ownen ownen Ownen Ownen Ownen Ownen ownen Ownen Ownen ownen Ownen Ownen Ownen ownen Ownen Ownen Ownen Ownen Ownen Ownen Ownen Ownen ownen Ownen ownen Ownen