Changes in intragraft gene expression secondary to ischemia. Reperfusion after cardiac transplantation

Mark D Stegall, Walter D. Park, Dean Y. Kim, Marco Covarrubias, Anis Khair, Walter K Kremers

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Background. Ischemia-reperfusion (I/R) injury in transplanted tissue is associated with changes in intragraft cytokines, chemokines, and adhesion molecules. The aim of this study was to perform a comprehensive analysis of gene expression in cardiac grafts secondary to I/R using microarray technology. Methods. Heterotopic brown Norway rat cardiac isografts were removed on postoperative day (POD) 3, 5, and 7. RNA was extracted, hybridized on U34A-Affymetrix high-density gene expression arrays, and compared with nontransplanted hearts using the log-average ration (LAR) and Student t test. Results. Of the approximately 8,799 transcripts tested on each chip, 557 were significantly increased by POD5, with fewer induced transcripts observed on POD3 (46) and POD7 (32). The most significantly induced transcripts included MHC class II molecules, interferon-γ inducing factor, apolipoprotein E, and cathepsin S. In contrast, the highest number of down-regulated transcripts was seen on POD3 (746) with fewer transcripts down-regulated by POD5 (162) and POD7 (298). Down-regulated transcripts included those involved in cellular metabolism: monoamine oxidase-A, mitochondrial-A synthase complex, and cytochrome oxidase subunit. By POD7, oxidative stress inducible protein tyrosine phosphatase and vascular endothelial cell growth factor were significantly decreased in transplanted isografts. Reverse-transcriptase polymerase chain reaction (RT-PCR) data on 10 transcripts agreed with the microarray results. Conclusions. Microarrays using LAR analyses generally agree with previous data regarding intragraft changes during I/R injury but provide a larger number of molecules for future study. Although the largest number of down-regulated genes was seen early, the I/R effect may be continuing in that many transcripts remain down-regulated 7 days after transplantation.

Original languageEnglish (US)
Pages (from-to)924-930
Number of pages7
JournalTransplantation
Volume74
Issue number7
StatePublished - Oct 15 2002

Fingerprint

Isografts
cathepsin S
Heart Transplantation
Reperfusion Injury
Reperfusion
Ischemia
Gene Expression
Protein Tyrosine Phosphatases
Monoamine Oxidase
Apolipoproteins E
Electron Transport Complex IV
Heat-Shock Proteins
Reverse Transcriptase Polymerase Chain Reaction
Chemokines
Interferons
Vascular Endothelial Growth Factor A
Oxidative Stress
Transplantation
RNA
Cytokines

ASJC Scopus subject areas

  • Transplantation
  • Immunology

Cite this

Changes in intragraft gene expression secondary to ischemia. Reperfusion after cardiac transplantation. / Stegall, Mark D; Park, Walter D.; Kim, Dean Y.; Covarrubias, Marco; Khair, Anis; Kremers, Walter K.

In: Transplantation, Vol. 74, No. 7, 15.10.2002, p. 924-930.

Research output: Contribution to journalArticle

Stegall, Mark D ; Park, Walter D. ; Kim, Dean Y. ; Covarrubias, Marco ; Khair, Anis ; Kremers, Walter K. / Changes in intragraft gene expression secondary to ischemia. Reperfusion after cardiac transplantation. In: Transplantation. 2002 ; Vol. 74, No. 7. pp. 924-930.
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abstract = "Background. Ischemia-reperfusion (I/R) injury in transplanted tissue is associated with changes in intragraft cytokines, chemokines, and adhesion molecules. The aim of this study was to perform a comprehensive analysis of gene expression in cardiac grafts secondary to I/R using microarray technology. Methods. Heterotopic brown Norway rat cardiac isografts were removed on postoperative day (POD) 3, 5, and 7. RNA was extracted, hybridized on U34A-Affymetrix high-density gene expression arrays, and compared with nontransplanted hearts using the log-average ration (LAR) and Student t test. Results. Of the approximately 8,799 transcripts tested on each chip, 557 were significantly increased by POD5, with fewer induced transcripts observed on POD3 (46) and POD7 (32). The most significantly induced transcripts included MHC class II molecules, interferon-γ inducing factor, apolipoprotein E, and cathepsin S. In contrast, the highest number of down-regulated transcripts was seen on POD3 (746) with fewer transcripts down-regulated by POD5 (162) and POD7 (298). Down-regulated transcripts included those involved in cellular metabolism: monoamine oxidase-A, mitochondrial-A synthase complex, and cytochrome oxidase subunit. By POD7, oxidative stress inducible protein tyrosine phosphatase and vascular endothelial cell growth factor were significantly decreased in transplanted isografts. Reverse-transcriptase polymerase chain reaction (RT-PCR) data on 10 transcripts agreed with the microarray results. Conclusions. Microarrays using LAR analyses generally agree with previous data regarding intragraft changes during I/R injury but provide a larger number of molecules for future study. Although the largest number of down-regulated genes was seen early, the I/R effect may be continuing in that many transcripts remain down-regulated 7 days after transplantation.",
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