A critical contribution of both CD28 and ICOS in the adjuvant activity of Neisseria meningitidis H44/76 LPS and lpxL1 LPS.

Autor: van Berkel ME; Department of Immunology, University Medical Center, Utrecht, The Netherlands. m.vanberkel@umcutrecht.nl, Schrijver EH, van Mourik A, Tesselaar K, van der Ley P, Steeghs L, Oosterwegel MA
Jazyk: angličtina
Zdroj: Vaccine [Vaccine] 2007 Jun 11; Vol. 25 (24), pp. 4681-8. Date of Electronic Publication: 2007 Apr 25.
DOI: 10.1016/j.vaccine.2007.04.016
Abstrakt: The development of novel vaccines against Neisseria meningitidis recently gained momentum by the generation of penta-acylated lpxL1 LPS which has similar adjuvant activity, but reduced endotoxic activity as compared to hexa-acylated wild type (H44/76) LPS. We investigated the costimulation requirements for the adjuvant activity of both forms of LPS by immunizing CD28-, ICOS- and B7.1/2/ICOS-deficient mice. Both ICOS and CD28 appeared essential for optimal adjuvant activity of H44/76 LPS or lpxL1 LPS. Interestingly, ICOS-mediated costimulation predominates in the adjuvant activity of lpxL1 LPS, while both ICOS and CD28 are required for H44/76 LPS adjuvant activity.
Databáze: MEDLINE