Journals / Düzce Tıp Fakültesi Dergisi / 2021 / Cilt: 23 - Sayı: 1

Assessment of the Immunogenicity and Protective Aspects of a DNA Vaccine Targeting Crimean Congo Hemorrhagic Fever Virus Glycoprotein Gc

Kırım Kongo Kanamalı Ateşi Virüsü Glikoprotein Gc’yi Hedef Alan Bir DNA Aşısının Bağışıklık ve Koruyuculuk Sağlama Özelliklerinin Değerlendirilmesi

Pages
66–75
Publication Date
2021-04-30
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Once we comprehensively understand the immune correlates of protection, we will be more eligible to significantly improve the efficacy of vaccines.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Aim: Crimean Congo Hemorrhagic Fever (CCHF) is a lethal, endemic infectious disease in human.
📊
Key Findings & Data:Material and Methods: A DNA based vaccine targeting the immunogenic envelope glycoprotein Gc of a CCHF virus isolate with Turkey origin (Ank2) was generated and its immunogenicity and protective capability against lethal challenge in IFNα/βR-/- receptor knock out mice was assessed.
💡
Conclusion & Impact:Once we comprehensively understand the immune correlates of protection, we will be more eligible to significantly improve the efficacy of vaccines.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Kırım Kongo kanamalı ateşi virüsü · DNA aşısı · İmmün yanıt

Abstract

Aim: Crimean Congo Hemorrhagic Fever (CCHF) is a lethal, endemic infectious disease in human. For the preventive measures of the disease, there is currently no safe and efficient vaccine, widely for human use. Vaccine development for CCHF virus is an actively researched subject. In this study, we aimed to investigate the immunizing and protective potentials of the CCHF virus surface glycoprotein Gc that is delivered as a single antigen via a DNA based vaccine vector. Material and Methods: A DNA based vaccine targeting the immunogenic envelope glycoprotein Gc of a CCHF virus isolate with Turkey origin (Ank2) was generated and its immunogenicity and protective capability against lethal challenge in IFNα/βR-/- receptor knock out mice was assessed. Results: The developed vaccine candidate (pGc) elicited a considerable amount of neutralizing antibody responses in the vaccinated mice. The vaccine candidate significantly induced both antiviral Th1 and B cell activating Th2 immune responses deduced from the cytokine production profiles in the vaccinated mice. However, despite the immune responses elicited post-immunization, the vaccine failed to confer protection against lethal CCHF virus infection. Conclusion: To the best of our knowledge, this is the first report of a DNA vaccine candidate generated against CCHF virus based on the glycoprotein Gc. The pGc vaccine candidate exhibited antigen-specific immunity in IFN/α/βR-/- mice, but was unable to produce a protection upon lethal challenge with the homologous CCHF virus. Once we comprehensively understand the immune correlates of protection, we will be more eligible to significantly improve the efficacy of vaccines.

Özet

Amaç: Kırım Kongo Kanamalı Ateşi (KKKA), insanda ölümcül, endemik bir enfeksiyon hastalığıdır. Hastalığın önleyici tedbirleri için şu anda insanlarda yaygın olarak kullanılmak üzere güvenli ve etkili bir aşı bulunmamaktadır. KKKA virüsü için aşı geliştirilmesi, aktif olarak araştırılan bir konudur. Bu çalışmada, DNA esaslı bir aşı vektörü ile tek bir antijen olarak verilen KKKA virüsü yüzey glikoproteini Gc'nin bağışıklık kazandırıcı ve koruyucu potansiyellerinin araştırılması amaçlanmıştır. Gereç ve Yöntemler: Türkiye menşeli (Ank2) bir KKKA virüs izolatının immünojenik özellikteki zarf glikoproteini Gc'yi hedefleyen DNA esaslı bir aşı oluşturulmuş ve bu aşı adayının immünojenisitesi ve aşılanmış IFNα/βR-/- farelerde öldürücü doza karşı koruyucu yeteneği değerlendirilmiştir. Bulgular: Geliştirilen aşı adayı (pGc), aşılanmış farelerde önemli miktarda nötralize edici antikor yanıtı ortaya çıkardı. Aşı adayı, aşılanmış farelerde hem antiviral Th1, hem de B hücresini aktive eden Th2 bağışıklık tepkilerini önemli ölçüde uyardı. Bununla birlikte, aşılama sonrasında ortaya çıkan bağışıklık yanıtlarına rağmen, aşı, ölümcül KKKA virüsü enfeksiyonuna karşı koruma sağlayamadı. Sonuç: Bildiğimiz kadarıyla bu çalışma, glikoprotein Gc'yi hedef alan KKKA virüsüne karşı oluşturulan bir DNA aşı adayının ilk raporudur. PGc aşı adayı, IFNα/βR-/- farelerde antijene özgü bağışıklık yanıtı oluşturdu, ancak ölümcül dozdaki homolog KKKA virüsüne karşı bir koruma üretemedi. Aşı aracılı korunmanın bağışıklık ile olan ilişkilerini daha detaylı olarak anladığımızda, aşıların etkinliğini önemli ölçüde iyileştirme kabiliyetine sahip olacağız.

🔖

Cite This Article

SAHİN, E., CİHAN, A. Ç., ALİGHOLİPOUR, T., FOLDES, K., ENGİN, E. D., ÖZKUL, A. (2021). Assessment of the Immunogenicity and Protective Aspects of a DNA Vaccine Targeting Crimean Congo Hemorrhagic Fever Virus Glycoprotein Gc. Düzce Tıp Fakültesi Dergisi, Cilt: 23 - Sayı: 1, 66–75. https://ajindex.com/articles/420357

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (7)

  1. Knipe DM, Howley PM. Fields virology. 6th ed. Philadelphia, PA: Wolters Kluwer/Lippincott Williams & Wilkins Health; 2013. Leblebicioglu H. Crimean-Congo haemorrhagic fever in Eurasia. Int J Antimicrob Agents. 2010;36(Suppl 1):S43-6. Vorou R, Pierroutsakos IN, Maltezou HC. Crimean-Congo hemorrhagic fever. Curr Opin Infect Dis. 2007;20(5):495-500. Whitehouse CA. Crimean-Congo hemorrhagic fever. Antiviral Res. 2004;64(3):145-60.
  2. Mertens M, Schmidt K, Ozkul A, Groschup MH. The impact of Crimean-Congo hemorrhagic fever virus on public health. Antiviral Res. 2013;98(2):248-60.
  3. Messina JP, Pigott DM, Duda KA, Brownstein JS, Myers MF, George DB, et al. A global compendium of human Crimean-Congo haemorrhagic fever virus occurrence. Sci Data. 2015;2:150016. Leblebicioglu H, Ozaras R, Irmak H, Sencan I. Crimean-Congo hemorrhagic fever in Turkey: Current status and future challenges. Antiviral Res. 2016;126:21-34.
  4. Bente DA, Alimonti JB, Shieh WJ, Camus G, Ströher U, Zaki S, et al. Pathogenesis and immune response of Crimean-Congo hemorrhagic fever virus in a STAT-1 knockout mouse model. J Virol. 2010;84(21):11089-100.
  5. Bereczky S, Lindegren G, Karlberg H, Akerström S, Klingström J, Mirazimi A. Crimean-Congo hemorrhagic fever virus infection is lethal for adult type I interferon receptor-knockout mice. J Gen Virol. 2010;91(Pt 6):1473-7.
  6. Papa A, Papadimitriou E, Christova I. The Bulgarian vaccine Crimean-Congo haemorrhagic fever virus strain. Scand J Infect Dis. 2011;43(3):225-9.
  7. Aligholipour Farzani T, Földes K, Hanifehnezhad A, Yener Ilce B, Bilge Dagalp S, Amirzadeh Khiabani N, et al. Bovine Herpesvirus type 4 (BoHV-4) vector delivering nucleocapsid protein of Crimean-Congo hemorrhagic fever virus induces comparable protective immunity against lethal challenge in IFNα/β/γR-/- mice models. Viruses. 2019;11(3):237. Aligholipour Farzani T, Hanifehnezhad A, Földes K, Ergünay K, Yilmaz E, Hashim Mohamed Ali H, et al. Co-delivery effect of CD24 on the immunogenicity and lethal challenge protection of a DNA vector expressing nucleocapsid protein of Crimean Congo hemorrhagic fever virus. Viruses. 2019;11(1):75. Buttigieg KR, Dowall SD, Findlay-Wilson S, Miloszewska A, Rayner E, Hewson R, et al. A novel vaccine against Crimean-Congo haemorrhagic fever protects 100% of animals against lethal challenge in a mouse model. PLoS One. 2014;9(3):e91516. Canakoglu N, Berber E, Tonbak S, Ertek M, Sozdutmaz I, Aktas M, et al. Immunization of knock-out α/β interferon receptor mice agains