J 2023

Vaccination against tick-borne encephalitis elicits a detectable NS1 IgG antibody response

ACKERMANN-GÄUMANN, Rahel, Arthur BRÊCHET, Jan SMETANA, Jiří SALÁT, Reto LIENHARD et. al.

Základní údaje

Originální název

Vaccination against tick-borne encephalitis elicits a detectable NS1 IgG antibody response

Autoři

ACKERMANN-GÄUMANN, Rahel, Arthur BRÊCHET, Jan SMETANA, Jiří SALÁT (203 Česká republika, domácí), Reto LIENHARD, Antony CROXATTO, Petra POLCAROVÁ, Roman CHLÍBEK a Daniel RŮŽEK (203 Česká republika, domácí)

Vydání

Journal of Virological Methods, Amsterdam, Elsevier, 2023, 0166-0934

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10607 Virology

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 3.100 v roce 2022

Kód RIV

RIV/00216224:14310/23:00132669

Organizační jednotka

Přírodovědecká fakulta

UT WoS

001104252700001

Klíčová slova anglicky

Tick-borne encephalitis; Antibody; Non-structural protein 1; NS1; Vaccination; Flavivirus

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 19. 1. 2024 10:02, Mgr. Marie Šípková, DiS.

Anotace

V originále

Vaccine-induced protection against tick-borne encephalitis virus (TBEV) is mediated by antibodies to the viral particle/envelope protein. The detection of non-structural protein 1 (NS1) specific antibodies has been suggested as a marker indicative of natural infections. However, recent work has shown that TBEV vaccines contain traces of NS1, and immunization of mice induced low amounts of NS1-specific antibodies. In this study, we investigated if vaccination induces TBEV NS1-specific antibodies in humans. Healthy army members (n = 898) were asked to fill in a questionnaire relating to flavivirus vaccination or infection, and blood samples were collected. In addition, samples of 71 suspected acute TBE cases were included. All samples were screened for the presence of TBEV NS1-specific IgG antibodies using an in-house developed ELISA. Antibodies were quantified as percent positivity in reference to a positive control. For qualitative evaluation, cut-off for positivity was defined based on the mean OD of the lower 95% of the vaccinated individuals + 3 SD. We found significantly higher NS1-specific IgG antibody titers (i.e., quantitative evaluation) in individuals having received 2, 3, or 4 or more vaccine doses than in non-vaccinated individuals. Similarly, the percentage of individuals with a positive test result (i.e., qualitative evaluation) was higher in individuals vaccinated against tick-borne encephalitis than in unvaccinated study participants. Although NS1-specific IgG titers remained at a relatively low level when compared to TBE patients, a clear distinction was not always possible. Establishing a clear cut-off point in detection systems is critical for NS1-specific antibodies to serve as a marker for distinguishing the immune response after vaccination and infection.

Návaznosti

LM2018127, projekt VaV
Název: Česká infrastruktura pro integrativní strukturní biologii (Akronym: CIISB)
Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Czech Infrastructure for Integrative Structural Biology
NU22-05-00659, projekt VaV
Název: Neutralizační nanoprotilátky jako potenciální terapeutika klíšťové encefalitidy
Investor: Ministerstvo zdravotnictví ČR, Neutralizační nanoprotilátky jako potenciální terapeutika klíšťové encefalitidy, Podprogram 1 - standardní