Long-term Sudan virus Ebola survivors maintain multiple antiviral defense mechanisms.
J Infect Dis
; 2023 Dec 08.
Article
en En
| MEDLINE
| ID: mdl-38066574
ABSTRACT
BACKGROUND:
The critical issues of sustained memory immunity following ebolavirus disease among long-term survivors (EVD) are still unclear.METHODS:
Here, we examine virus-specific immune and inflammatory responses in 12 Sudan virus (SUDV) long-term survivors from Uganda's 2000-1 Gulu outbreak, 15 years after recovery following in vitro challenge. Total RNA from isolated SUDV-stimulated and unstimulated PBMCs was extracted and analyzed. Matched serum samples were also collected to determine SUDV IgG levels and functionality.RESULTS:
We detected persistent humoral (58%, 7 of 12) and cellular (33%, 4 of 12) immune responses in SUDV long-term survivors and identified critical molecular mechanisms of innate and adaptive immunity. Gene expression in immune pathways, the IFN signaling system, antiviral defense response, and activation and regulation of T- and B-cell responses were observed. SUDV long-term survivors also maintained robust virus-specific IgG antibodies capable of polyfunctional responses, including neutralizing and innate Fc effector functions.CONCLUSIONS:
Data integration identified significant correlations among humoral and cellular immune responses and pinpointed a specific innate and adaptive gene expression signature associated with long-lasting immunity. This could help identify natural and vaccine correlates of protection against ebolavirus disease.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
J Infect Dis
Año:
2023
Tipo del documento:
Article
País de afiliación:
Israel