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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2003-8-20
pubmed:abstractText
Early systemic treatment of nonobese diabetic mice with high doses of recombinant adeno-associated virus (rAAV) vector expressing murine IL-10 prevents type 1 diabetes. To determine the therapeutic parameters and immunological mechanisms underlying this observation, female nonobese diabetic mice at 4, 8, and 12 wk of age were given a single i.m. injection of rAAV-murine IL-10 (10(4), 10(6), 10(8), and 10(9) infectious units (IU)), rAAV-vector expressing truncated murine IL-10 fragment (10(9) IU), or saline. Transduction with rAAV-IL-10 at 10(9) IU completely prevented diabetes in all animals injected at all time points, including, surprisingly, 12-wk-old animals. Treatment with 10(8) IU provided no protection in the 12-wk-old injected mice, partial prevention in 8-wk-old mice, and full protection in all animals injected at 4 wk of age. All other treatment groups developed diabetes at a similar rate. The rAAV-IL-10 therapy attenuated pancreatic insulitis, decreased MHC II expression on CD11b+ cells, increased the population of CD11b+ cells, and modulated insulin autoantibody production. Interestingly, rAAV-IL-10 therapy dramatically increased the percentage of CD4+CD25+ regulatory T cells. Adoptive transfer studies suggest that rAAV-IL-10 treatment alters the capacity of splenocytes to impart type 1 diabetes in recipient animals. This study indicates the potential for immunomodulatory gene therapy to prevent autoimmune diseases, including type 1 diabetes, and implicates IL-10 as a molecule capable of increasing the percentages of regulatory cells in vivo.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0022-1767
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
171
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2270-8
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed-meshheading:12928371-Adenoviridae, pubmed-meshheading:12928371-Animals, pubmed-meshheading:12928371-Antibody Formation, pubmed-meshheading:12928371-Autoantibodies, pubmed-meshheading:12928371-CD4-Positive T-Lymphocytes, pubmed-meshheading:12928371-Dependovirus, pubmed-meshheading:12928371-Diabetes Mellitus, Type 1, pubmed-meshheading:12928371-Dose-Response Relationship, Immunologic, pubmed-meshheading:12928371-Female, pubmed-meshheading:12928371-Gene Therapy, pubmed-meshheading:12928371-Genetic Vectors, pubmed-meshheading:12928371-Immunity, Cellular, pubmed-meshheading:12928371-Injections, Intramuscular, pubmed-meshheading:12928371-Insulin Antibodies, pubmed-meshheading:12928371-Interleukin-10, pubmed-meshheading:12928371-Islets of Langerhans, pubmed-meshheading:12928371-Mice, pubmed-meshheading:12928371-Mice, Inbred C57BL, pubmed-meshheading:12928371-Mice, Inbred NOD, pubmed-meshheading:12928371-Receptors, Interleukin-2, pubmed-meshheading:12928371-Recombination, Genetic, pubmed-meshheading:12928371-T-Lymphocyte Subsets, pubmed-meshheading:12928371-Time Factors
pubmed:year
2003
pubmed:articleTitle
Systemic overexpression of IL-10 induces CD4+CD25+ cell populations in vivo and ameliorates type 1 diabetes in nonobese diabetic mice in a dose-dependent fashion.
pubmed:affiliation
Department of Pathology, Powell Gene Therapy Center, University of Florida, 1600 SW Archer Road, Gainesville, FL 32610, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't