Cited by 66T-cell and B-cell ImmunologyHemophilia Treatment and ResearchImmunotherapy and Immune Responses

Prophylactic immune tolerance induced by changing the ratio of antigen-specific effector to regulatory T cells

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NAYAK, S., CAO, O., HOFFMAN, B.E., COOPER, M., ZHOU, S., ATKINSON, M.A., HERZOG, R.W.·2009·Journal of Thrombosis and Haemostasis

Abstract

Background Gene and protein replacement therapies for inherited protein deficiencies such as hemophilia or lysosomal storage disorders are limited by deleterious immune responses directed against their respective therapeutic proteins. Therefore, the development of protocols preventing such responses is key to providing successful long-term therapy.Objectives We sought to develop a protocol, utilizing a drug/peptide cocktail, that would effectively shift the antigen-specific CD4+ T-cell population, tipping the balance from effector T cells (Teffs) towards regulatory T cells (Tregs).Methods Treg-deficient (DO11.10-tg Rag2(-/-)) BALB/c mice were used to screen for an optimal protocol addressing the aforementioned goal and to study the mechanisms underlying in vivo changes in T-cell populations. Muscle-directed gene transfer to hemophilia B mice was also performed in order to test the optimal protocol in a therapeutically relevant setting.Results Specific antigen administration (4-week repeated dosing) combined with rapamycin and interleukin-10 led to substantial reductions in Teffs, via activation-induced cell death, and induced CD4+CD25+FoxP3+ Tregs to a large extent in multiple organs. The proportion of apoptotic T cells also increased over time, whereas Teffs and Tregs were differentially affected. When applied to a model of protein deficiency (gene therapy for hemophilia B), the protocol successfully prevented inhibitor formation, whereas non-specific immunosuppression was only marginally effective.Conclusions It is feasible to provide a short-term, prophylactic protocol allowing for the induction of immune tolerance. This protocol may provide a marked advance in efforts seeking to improve clinical outcomes in disorders involving therapeutic protein replacement.

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Crossref · 10.1111/j.1538-7836.2009.03548.x

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  • Increased levels of gene expression resulting from higher vector doses promote immune tolerance through elevated expression of IL-10, enhanced apoptosis of effector T cells, and enhanced Treg induction.

    “However, the exact opposite is true, and increased levels of gene expression resulting from higher vector doses promote immune tolerance through elevated expression of the immune suppressive cytokine IL-10, enhanced apoptosis of effector T cells, and enhanced Treg induction similar to that observed with a very high HBV inoculum in chimpanzees.15,56,57,58,59,60,61,62”

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Authors
NAYAK, S., CAO, O., HOFFMAN, B. E., COOPER, M., ZHOU, S., ATKINSON, M. A., & HERZOG, R. W.
Affiliations
  • University of Florida (US)
  • Children's Hospital of Philadelphia (US)
  • University of Florida Health (US)
Corresponding author
HERZOG, R.W.
Venue
Journal of Thrombosis and Haemostasis
Publisher
Elsevier BV
Published
2009-09
Volume
7
Issue
9
Pages
1523-1532
ISSN
1538-7836 (ISSN-L)
OpenAlex
W2029392819
Cited by
66
References
21
Citations by year
2026: 1 · 2025: 1 · 2023: 3 · 2022: 3 · 2020: 2 · 2019: 4 · 2018: 5 · 2017: 5 · 2016: 2 · 2015: 5 · 2014: 9 · 2013: 4 · 2012: 6
FWCI
3.16
Type
journal article
Language
en
Open access
Locations
  • Journal of Thrombosis and Haemostasis (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • American Heart Association
  • National Institutes of Health
  • National Heart, Lung, and Blood Institute (P01HL078810)
  • National Institute of Allergy and Infectious Diseases (R01 AI/HL51390, R01AI051390)
  • National Institute of Diabetes and Digestive and Kidney Diseases (T32DK074367)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (F32HD051390)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Health Sciences › Medicine › Hematology › Hemophilia Treatment and Research
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
Keywords
immune tolerance, regulatory T cells, effector T cells, rapamycin, IL-10, hemophilia B, gene therapy, inhibitor formation, activation-induced cell death, CD4+ T cells, Foxp3, lysosomal storage disease
MeSH terms
Animals, Antigens, Factor IX, Hemophilia A, Humans, Immune Tolerance, Mice, Inbred BALB C, Mice, Inbred C3H, Genetic Therapy, CD4-Positive T-Lymphocytes, Interleukin-10, Sirolimus, T-Lymphocytes, Regulatory, Mice, Forkhead Transcription Factors, Interleukin-2 Receptor alpha Subunit

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