A self-assembling peptide acting as an immune adjuvant

Jai S. Rudra, Ye F. Tian, Jangwook P. Jung, Joel H. Collier

Research output: Contribution to journalArticle

240 Citations (Scopus)

Abstract

The development of vaccines and other immunotherapies has been complicated by heterogeneous antigen display and the use of incompletely defined immune adjuvants with complex mechanisms of action. We have observed strong antibody responses in mice without the coadministration of any additional adjuvant by noncovalently assembling a Tand B cell epitope peptide into nanofibers using a short C-terminal peptide extension. Self-assembling peptides have been explored recently as scaffolds for tissue engineering and regenerative medicine, but our results indicate that these materials may also be useful as chemically defined adjuvants. In physiological conditions, these peptides self-assembled into long, unbranched fibrils that displayed the epitope on their surfaces. IgG1, IgG2a, and IgG3 were raised against epitope-bearing fibrils in levels similar to the epitope peptide delivered in complete Freund's adjuvant (CFA), and IgM production was even greater for the self-assembled epitope. This response was dependent on self-assembly, and the self-assembling sequence was not immunogenic by itself, even when delivered in CFA. Undetectable levels of interferon-gamma, IL-2, and IL-4 in cultures of peptide-challenged splenocytes from immunized mice suggested that the antibody responses did not involve significant T cell help.

Original languageEnglish (US)
Pages (from-to)622-627
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume107
Issue number2
DOIs
StatePublished - 2010
Externally publishedYes

Fingerprint

Peptides
Epitopes
Freund's Adjuvant
Antibody Formation
Immunoglobulin G
Nanofibers
B-Lymphocyte Epitopes
Regenerative Medicine
Tissue Engineering
Interleukin-4
Immunotherapy
Interferon-gamma
Interleukin-2
Immunoglobulin M
Vaccines
T-Lymphocytes
Antigens

Keywords

  • Biomaterial
  • Epitope
  • Nanofiber
  • Self-assembly
  • Vaccine

ASJC Scopus subject areas

  • General

Cite this

A self-assembling peptide acting as an immune adjuvant. / Rudra, Jai S.; Tian, Ye F.; Jung, Jangwook P.; Collier, Joel H.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 107, No. 2, 2010, p. 622-627.

Research output: Contribution to journalArticle

Rudra, Jai S. ; Tian, Ye F. ; Jung, Jangwook P. ; Collier, Joel H. / A self-assembling peptide acting as an immune adjuvant. In: Proceedings of the National Academy of Sciences of the United States of America. 2010 ; Vol. 107, No. 2. pp. 622-627.
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