Abstract:
:Following fetal or neonatal gene transfer in mice and other species immune tolerance of the transgenic protein is frequently observed; however the underlying mechanisms remain largely undefined. In this study fetal and neonatal BALB/c mice received adenovirus vector to deliver human factor IX (hFIX) cDNA. The long-term tolerance of hFIX was robust in the face of immune challenge with hFIX protein and adjuvant but was eliminated by simultaneous administration of anti-CD25+ antibody. Naive irradiated BALB/c mice which had received lymphocytes from donors immunised with hFIX developed anti-hFIX antibodies upon immune challenge. Cotransplantation with CD4+CD25+ cells isolated from neonatally tolerized donors decreased the antibody response. In contrast, cotransplantation with CD4+CD25- cells isolated from the same donors increased the antibody response. These data provide evidence that immune tolerance following perinatal gene transfer is maintained by a CD4+CD25+ regulatory population.
journal_name
J Immunol Resjournal_title
Journal of immunology researchauthors
Nivsarkar MS,Buckley SM,Parker AL,Perocheau D,McKay TR,Rahim AA,Howe SJ,Waddington SNdoi
10.1155/2015/397879subject
Has Abstractpub_date
2015-01-01 00:00:00pages
397879eissn
2314-8861issn
2314-7156journal_volume
2015pub_type
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