Expression Changes in Tolerant Murine Cardiac Allografts After Gene Therapy With a Lentiviral Vector Expressing α1,3 Galactosyltransferase

J. M. Evans, T. Doki, J. Fischer-Lougheed, E. Davicioni, M. Kearns-Jonker

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Comparison of intragraft gene expression changes in tolerant cardiac allograft models may provide the basis for identifying pathways involved in graft survival. Our laboratory has previously demonstrated that tolerance to the gal α1,3 gal epitope, the major target of rejection of wild-type pig hearts in human cardiac transplantation, can be achieved after transplantation with bone marrow transduced with a lentiviral vector expressing α1,3 galactosyltransferase. We now present intracardiac gene expression changes associated with long-term tolerance in this model. Biotin-labeled cRNA was hybridized to Affymetrix GeneChip 430 2.0 Mouse Genome Arrays. Data were subjected to functional annotation analysis to identify genes of known function in which expression was increased or decreased by at least 2-fold (t-test, P < .05) in tolerant gal+/+ wild-type hearts as compared to transplanted syngeneic controls. Tolerant hearts demonstrated increased expression of genes associated with the stress response, modulation of immune function and cell survival (HSPa9a, CD56, and Akt1s1), and decreased expression of several immunoregulatory genes (CD209, CD26, and PDE4b). These data suggest that tolerance may be associated with activation of immunomodulatory and survival pathways.

Original languageEnglish (US)
Pages (from-to)3172-3180
Number of pages9
JournalTransplantation Proceedings
Volume38
Issue number10
DOIs
StatePublished - Dec 2006

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Galactosyltransferases
Genetic Therapy
Allografts
Gene Expression
Complementary RNA
Graft Survival
Heart Transplantation
Biotin
Bone Marrow Transplantation
Genes
Epitopes
Cell Survival
Swine
Genome
Survival

ASJC Scopus subject areas

  • Surgery
  • Transplantation

Cite this

Expression Changes in Tolerant Murine Cardiac Allografts After Gene Therapy With a Lentiviral Vector Expressing α1,3 Galactosyltransferase. / Evans, J. M.; Doki, T.; Fischer-Lougheed, J.; Davicioni, E.; Kearns-Jonker, M.

In: Transplantation Proceedings, Vol. 38, No. 10, 12.2006, p. 3172-3180.

Research output: Contribution to journalArticle

Evans, J. M. ; Doki, T. ; Fischer-Lougheed, J. ; Davicioni, E. ; Kearns-Jonker, M. / Expression Changes in Tolerant Murine Cardiac Allografts After Gene Therapy With a Lentiviral Vector Expressing α1,3 Galactosyltransferase. In: Transplantation Proceedings. 2006 ; Vol. 38, No. 10. pp. 3172-3180.
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