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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Adv+Healthc+Mater
2014 ; 3
(11
): 1898-908
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Titrating T-cell epitopes within self-assembled vaccines optimizes CD4+ helper T
cell and antibody outputs
#MMPMID24923735
Pompano RR
; Chen J
; Verbus EA
; Han H
; Fridman A
; McNeely T
; Collier JH
; Chong AS
Adv Healthc Mater
2014[Nov]; 3
(11
): 1898-908
PMID24923735
show ga
Epitope content plays a critical role in determining T-cell and antibody
responses to vaccines, biomaterials, and protein therapeutics, but its effects
are nonlinear and difficult to isolate. Here, molecular self-assembly is used to
build a vaccine with precise control over epitope content, in order to finely
tune the magnitude and phenotype of T helper and antibody responses.
Self-adjuvanting peptide nanofibers are formed by co-assembling a high-affinity
universal CD4+ T-cell epitope (PADRE) and a B-cell epitope from Staphylococcus
aureus at specifiable concentrations. Increasing the PADRE concentration from
micromolar to millimolar elicited bell-shaped dose-responses that are unique to
different T-cell populations. Notably, the epitope ratios that maximize T
follicular helper and antibody responses differed by an order of magnitude from
those that maximized Th1 or Th2 responses. Thus, modular materials assembly
provides a means of controlling epitope content and efficiently skewing the
adaptive immune response in the absence of exogenous adjuvant; this approach may
contribute to the development of improved vaccines and immunotherapies.