Nonredundant roles of IL-10 and TGF-Β in suppression of immune responses to hepatic AAV-factor IX gene transfer

Brad E. Hoffman, Ashley T. Martino, Brandon Wilder, Ou Cao, Gongxian Liao, Cox Terhorst, Roland W. Herzog

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

Hepatic gene transfer using adeno-associated viral (AAV) vectors has been shown to efficiently induce immunological tolerance to a variety of proteins. Regulatory T-cells (Treg) induced by this route suppress humoral and cellular immune responses against the transgene product. In this study, we examined the roles of immune suppressive cytokines interleukin-10 (IL-10) and transforming growth factor-Β (TGF-Β) in the development of tolerance to human coagulation factor IX (hF.IX). Interestingly, IL-10 deficient C57BL/6 mice receiving gene transfer remained tolerant to hF.IX and generated Treg that suppressed anti-hF.IX formation. Effects of TGF-Β blockade were also minor in this strain. In contrast, in C3H/HeJ mice, a strain known to have stronger T-cell responses against hF.IX, IL-10 was specifically required for the suppression of CD8+ T-cell infiltration of the liver. Furthermore, TGF-Β was critical for tipping the balance toward an regulatory immune response. TGF-Β was required for CD4+ CD25+ FoxP3+ Treg induction, which was necessary for suppression of effector CD4+ and CD8 T-cell responses as well as antibody formation. These results demonstrate the crucial, nonredundant roles of IL-10 and TGF-Β in prevention of immune responses against AAV-F.IX-transduced hepatocytes.

Original languageEnglish (US)
Pages (from-to)1263-1272
Number of pages10
JournalMolecular Therapy
Volume19
Issue number7
DOIs
StatePublished - Jan 1 2011
Externally publishedYes

Fingerprint

Factor IX
Transforming Growth Factors
Interleukin-10
Liver
Genes
T-Lymphocytes
Inbred C3H Mouse
Regulatory T-Lymphocytes
Humoral Immunity
Transgenes
Inbred C57BL Mouse
Cellular Immunity
Antibody Formation
Hepatocytes
Cytokines
Proteins

ASJC Scopus subject areas

  • Molecular Medicine
  • Molecular Biology
  • Genetics
  • Pharmacology
  • Drug Discovery

Cite this

Nonredundant roles of IL-10 and TGF-Β in suppression of immune responses to hepatic AAV-factor IX gene transfer. / Hoffman, Brad E.; Martino, Ashley T.; Wilder, Brandon; Cao, Ou; Liao, Gongxian; Terhorst, Cox; Herzog, Roland W.

In: Molecular Therapy, Vol. 19, No. 7, 01.01.2011, p. 1263-1272.

Research output: Contribution to journalArticle

Hoffman, Brad E. ; Martino, Ashley T. ; Wilder, Brandon ; Cao, Ou ; Liao, Gongxian ; Terhorst, Cox ; Herzog, Roland W. / Nonredundant roles of IL-10 and TGF-Β in suppression of immune responses to hepatic AAV-factor IX gene transfer. In: Molecular Therapy. 2011 ; Vol. 19, No. 7. pp. 1263-1272.
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