Publikationsdatenbank

Probing an Ixodes ricinus salivary gland yeast surface display with tick-exposed human sera to identify novel candidates for an anti-tick vaccine (2021)

Art

Zeitschriftenartikel / wissenschaftlicher Beitrag

Autoren

Trentelman, Jos J. A.

Tomás-Cortázar, Julen

Knorr, Sarah (WE 13)

Barriales, Diego

Hajdusek, Ondrej

Sima, Radek

Ersoz, Jasmin I.

Narasimhan, Sukanya

Fikrig, Erol

Nijhof, Ard M. (WE 13)

Anguita, Juan

Hovius, Joppe W.

Forschungsprojekt

Anti-tick vaccines to prevent tick-borne diseases in Europe

Quelle

Scientific reports

Bandzählung: 11

Heftzählung: 1

Seiten: Article number: 15745

ISSN: 2045-2322

Sprache

Englisch

Verweise

URL (Volltext): https://www.nature.com/articles/s41598-021-92538-9

DOI: 10.1038/s41598-021-92538-9

Pubmed: 34344917

Kontakt

Institut für Parasitologie und Tropenveterinärmedizin

Robert-von-Ostertag-Str. 7-13
14163 Berlin
+49 30 838 62310
parasitologie@vetmed.fu-berlin.de

Abstract / Zusammenfassung

In Europe, Ixodes ricinus is the most important vector of human infectious diseases, most notably Lyme borreliosis and tick-borne encephalitis virus. Multiple non-natural hosts of I. ricinus have shown to develop immunity after repeated tick bites. Tick immunity has also been shown to impair B. burgdorferi transmission. Most interestingly, multiple tick bites reduced the likelihood of contracting Lyme borreliosis in humans. A vaccine that mimics tick immunity could therefore potentially prevent Lyme borreliosis in humans. A yeast surface display library (YSD) of nymphal I. ricinus salivary gland genes expressed at 24, 48 and 72 h into tick feeding was constructed and probed with antibodies from humans repeatedly bitten by ticks, identifying twelve immunoreactive tick salivary gland proteins (TSGPs). From these, three proteins were selected for vaccination studies. An exploratory vaccination study in cattle showed an anti-tick effect when all three antigens were combined. However, immunization of rabbits did not provide equivalent levels of protection. Our results show that YSD is a powerful tool to identify immunodominant antigens in humans exposed to tick bites, yet vaccination with the three selected TSGPs did not provide protection in the present form. Future efforts will focus on exploring the biological functions of these proteins, consider alternative systems for recombinant protein generation and vaccination platforms and assess the potential of the other identified immunogenic TSGPs.