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Endothelial cells do not express GSTA1 : potential relevance to busulfan‐mediated endothelial damage during haematopoietic stem cell transplantation
Author(s) -
Vassord Camille,
Lapouméroulie Claudine,
Koumaravelou Kailasam,
Srivastava Alok,
Krishnamoorthy Rajagopal
Publication year - 2008
Publication title -
european journal of haematology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.904
H-Index - 84
eISSN - 1600-0609
pISSN - 0902-4441
DOI - 10.1111/j.1600-0609.2008.01031.x
Subject(s) - busulfan , stem cell , endothelial stem cell , haematopoiesis , transplantation , biology , immunology , umbilical vein , microbiology and biotechnology , cancer research , hematopoietic stem cell transplantation , in vitro , medicine , biochemistry
Busulfan‐mediated endothelial damage is believed to be a common mechanism in a variety of vascular disorders that occur during haematopoietic stem cell transplantation. The alkylating capacity of busulfan is compromised in vivo by enzymatic conjugation with glutathione, principally catalysed by glutathione S ‐transferase alpha (GST alpha). We investigated whether the susceptibility of endothelial cells to busulfan‐mediated damage is related to their intrinsic deficiency in GST alpha expression. We tested for the expression of GST alpha mRNA by real‐time quantitative PCR and the GST protein by enzyme‐linked immunosorbent assay in various independently derived endothelial cell types (human bone marrow‐derived endothelial cell line and endothelial cells from human vein umbilical cord ) and in a control hepatic cell line, HepG2. We demonstrate that endothelial cells, contrary to hepatic cells do not express GST alpha either at mRNA or protein levels and hence are potentially susceptible to busulfan‐mediated cytotoxic damage.