2014
DOI: 10.1038/mt.2013.134
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AAV8 Induces Tolerance in Murine Muscle as a Result of Poor APC Transduction, T Cell Exhaustion, and Minimal MHCI Upregulation on Target Cells

Abstract: Following gene transfer of adeno-associated virus 2/8 (AAV2/8) to the muscle, C57BL/6 mice show long-term expression of a nuclear-targeted LacZ (nLacZ) transgene with minimal immune activation. Here, we show that pre-exposure to AAV2/8 can also induce tolerance to the more immunogenic AAV2/rh32.33 vector, preventing otherwise robust T-cell activation and allowing stable transgene expression. Depletion and adoptive transfer studies showed that a suppressive factor was not sufficient to account for AAV2/8-induce… Show more

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Cited by 53 publications
(59 citation statements)
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“…First, a wide variety of AAV serotypes could be employed which have exhibited limited circulation in human populations. The AAV8 serotype was isolated from rhesus macaques and is advantageous for its propensity for muscle transduction (73), reduced immunogenicity (74) and lower prevalence of seropositive individuals (about 38%) in the population (49). However, sufficient cross-reactivity between AAV capsids exist such that some individuals will still exhibit neutralizing activity against AAV8.…”
Section: Potential Pitfalls Of Aav-vectored Antibody Gene Transfermentioning
confidence: 99%
“…First, a wide variety of AAV serotypes could be employed which have exhibited limited circulation in human populations. The AAV8 serotype was isolated from rhesus macaques and is advantageous for its propensity for muscle transduction (73), reduced immunogenicity (74) and lower prevalence of seropositive individuals (about 38%) in the population (49). However, sufficient cross-reactivity between AAV capsids exist such that some individuals will still exhibit neutralizing activity against AAV8.…”
Section: Potential Pitfalls Of Aav-vectored Antibody Gene Transfermentioning
confidence: 99%
“…Uptake by antigen-presenting cells (such as macrophages) is a premise for the induction of cellular immune responses [123][124][125] . Strategies that can minimize macrophage uptake may improve AAV transduction in dystrophic muscle.…”
Section: Engineering Aav Vectors To Reduce Cellular Immune Responsesmentioning
confidence: 99%
“…This capsid, originally isolated from rhesus monkey, has shown a propensity for transducing muscle cells [55] and has been associated with reduced immunogenicity in vivo [67]. A single intramuscular injection of 1×10 11 GC of this vector into humanized mice resulted in the production of antibody at circulating concentrations greater than 100 μg/mL,which persisted for at least 52 weeks [12].…”
Section: Antibody Transgenes For Aav-vectored Expressionmentioning
confidence: 99%