Differential induction of innate memory in porcine monocytes by ß-glucan or bacillus Calmette-Guerin.
Innate Immun
; 27(6): 448-460, 2021 08.
Article
en En
| MEDLINE
| ID: mdl-32862748
ABSTRACT
Innate immunomodulation via induction of innate memory is one mechanism to alter the host's innate immune response to reduce or prevent disease. Microbial products modulate innate responses with immediate and lasting effects. Innate memory is characterized by enhanced (training) or depressed (tolerance) innate immune responses, including pro-inflammatory cytokine production, to secondary exposure following a priming event. To investigate the ability of ß-glucans and bacillus Calmette-Guerin to induce innate training or tolerance in pig cells, porcine monocytes were cultured with priming agonist (ß-glucans or bacillus Calmette-Guerin) then re-stimulated 5 d later with a heterologous microbial agonist to determine induction of innate memory. Priming with ß-glucan from Saccharomyces cerevisiae depressed IL-1ß and TNF-α cytokine responses to re-stimulation with LPS, indicative of a tolerized state. However, bacillus Calmette-Guerin priming induced a trained state in porcine monocytes, as LPS re-stimulation enhanced IL-1ß and TNF-α gene expression and protein production. We present the first evidence of innate memory in pig monocytes, with bacillus Calmette-Guerin (training) or Saccharomyces cerevisiae ß-glucan (tolerance). Induction of a trained or tolerized state in vitro is a first step to identify agonists to alter the innate immune system at the animal level with the intent of enhancing disease resistance.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Saccharomyces cerevisiae
/
Monocitos
/
Inmunidad Innata
/
Inflamación
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
En
Revista:
Innate Immun
Asunto de la revista:
ALERGIA E IMUNOLOGIA
/
BACTERIOLOGIA
Año:
2021
Tipo del documento:
Article
País de afiliación:
Estados Unidos