Cited by 36Hemophilia Treatment and ResearchVirus-based gene therapy researchRNA Interference and Gene Delivery

IL-15 blockade and rapamycin rescue multifactorial loss of factor VIII from AAV-transduced hepatocytes in hemophilia A mice

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Butterfield, John S.S., Yamada, Kentaro, Bertolini, Thais B., Syed, Farooq, Kumar, Sandeep R.P., Li, Xin, Arisa, Sreevani, Piñeros, Annie R. +9 more·2022·Molecular Therapy

Abstract

Hepatic adeno-associated viral (AAV) gene transfer has the potential to cure the X-linked bleeding disorder hemophilia A. However, declining therapeutic coagulation factor VIII (FVIII) expression has plagued clinical trials. To assess the mechanistic underpinnings of this loss of FVIII expression, we developed a hemophilia A mouse model that shares key features observed in clinical trials. Following liver-directed AAV8 gene transfer in the presence of rapamycin, initial FVIII protein expression declines over time in the absence of antibody formation. Surprisingly, loss of FVIII protein production occurs despite persistence of transgene and mRNA, suggesting a translational shutdown rather than a loss of transduced hepatocytes. Some of the animals develop ER stress, which may be linked to hepatic inflammatory cytokine expression. FVIII protein expression is preserved by interleukin-15/interleukin-15 receptor blockade, which suppresses CD8 + T and natural killer cell responses. Interestingly, mice with initial FVIII levels >100% of normal had diminishing expression while still under immune suppression. Taken together, our findings of interanimal variability of the response, and the ability of the immune system to shut down transgene expression without utilizing cytolytic or antibody-mediated mechanisms, illustrate the challenges associated with FVIII gene transfer. Our protocols based upon cytokine blockade should help to maintain efficient FVIII expression.

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Crossref · 10.1016/j.ymthe.2022.07.005

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  • Initial priming of CD8+ T cells in the hepatic environment would explain the delayed functionality of the response previously documented in the C57BL/6-OVA model and in hemophilia A mice responding to FVIII.

    “Initial priming of CD8+ T cells in the hepatic environment would explain the delayed functionality of the response that we previously documented in both the C57BL/6-OVA model and in hemophilia A mice responding to FVIII.15,37”

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Authors
Butterfield, J. S. S., Yamada, K., Bertolini, T. B., Syed, F., Kumar, S. R. P., Li, X., Arisa, S., Piñeros, A. R., Tapia, A., Rogers, C. A., Li, N., Rana, J., Biswas, M., Terhorst, C., Kaufman, R. J., de Jong, Y. P., & Herzog, R. W.
Affiliations
  • University of Florida Health (US)
  • Indiana University Indianapolis (US)
  • Beth Israel Deaconess Medical Center (US)
  • Sanford Burnham Prebys Medical Discovery Institute (US)
Corresponding author
Herzog, Roland W.
Venue
Molecular Therapy
Publisher
Elsevier BV
Published
2022-12
Volume
30
Issue
12
Pages
3552-3569
ISSN
1525-0016 (ISSN-L)
OpenAlex
W4285098511
Cited by
36
References
67
Citations by year
2026: 6 · 2025: 4 · 2024: 9 · 2023: 14 · 2022: 3
FWCI
5.57
Type
journal article
Language
en
Open access
Locations
  • Molecular Therapy (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • IUScholarWorks (Indiana University) (submittedVersion, cc-by-nc-nd)
Funders
  • National Cancer Institute (P30 CA082709)
  • National Heart Lung and Blood Institute (R01 HL131093, U54 HL142012, P01HL160472)
  • Riley Children's Foundation
  • National Institute of Allergy and Infectious Diseases (R01AI51390)
  • Lilly Endowment Inc
  • Spark Therapeutics
  • National Institute of Diabetes and Digestive and Kidney Diseases (T32AI060519, U54 DK106846, 1S10D012270)
  • Indiana University
  • National Institutes of Health
Topics
  • Health Sciences › Medicine › Hematology › Hemophilia Treatment and Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Virus-based gene therapy research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Interference and Gene Delivery
Keywords
hemophilia A, factor VIII, liver-directed gene therapy, rapamycin, endoplasmic reticulum stress, hepatocyte loss, CD8+ T cells, natural killer cells, cytokine inhibition, immune tolerance, X-linked bleeding disorder
MeSH terms
Animals, Factor VIII, Interleukin-15, Sirolimus, Mice

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