Neuroglobin and cytoglobin expression in mice. Evidence for a correlation with reactive oxygen species scavenging.
Although essentially unknown, several functions are hypothesized for neuroglobin and cytoglobin, two new members of the globin family. In this article, we try to shed more light on their possible roles in hypoxia and detoxification of reactive oxygen species in vivo. The relative transcriptional changes of neuroglobin and cytoglobin in a situation of chronic hypoxia in mice were examined using real-time quantitative PCR. The kinetics of the hypoxic expression of neuroglobin (brain, eyes) and cytoglobin (brain, eyes, liver, heart, skeletal muscle) is organ-specific. Moreover, reactive oxygen species production is higher in liver than in the other tissues. In eyes, the negative correlation, after reoxygenation, between neuroglobin protein level and H(2)O(2) concentration is a first proof of a reactive oxygen species-scavenging function for neuroglobin. In addition, apoptotic cell death after hypoxia is for the first time demonstrated in heart and liver.
Fordel
Elke
E
Department of Biomedical Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium.
Thijs
Liesbet
L
Moens
Luc
L
Dewilde
Sylvia
S
D000818:Animals; D000078842:Cytoglobin; D015870:Gene Expression; D005914:Globins / Q000235:genetics / Q000378:metabolism*; D000860:Hypoxia / Q000503:physiopathology; D007700:Kinetics; D051379:Mice; D008815:Mice, Inbred Strains; D009419:Nerve Tissue Proteins / Q000235:genetics / Q000378:metabolism*; D000078787:Neuroglobin; D009687:Nuclear Proteins / Q000235:genetics / Q000378:metabolism*; D009928:Organ Specificity; D016133:Polymerase Chain Reaction; D017382:Reactive Oxygen Species / Q000378:metabolism*; D014018:Tissue Distribution
C000627267:Cygb protein, mouse; D000078842:Cytoglobin; D009419:Nerve Tissue Proteins; D000078787:Neuroglobin; D009687:Nuclear Proteins; D017382:Reactive Oxygen Species; D005914:Globins