Role of heme oxygenase-1 in human endothelial cells : lesson from the promoter allelic variants
| Autor: | Klaudia Skrzypek, Lucie Muchová, Jerzy Kotlinowski, Halina Was, Magdalena Kozakowska, Hevidar Taha, Anneliese Nigisch, Ibeth Guevara, Libor Vítek, Pawel E. Ferdek, Anna Grochot-Przeczek, Aneta Balcerczyk, Alicja Jozkowicz, Stefan Mustafa, Jozef Dulak, Guenter Weigel |
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| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
Vascular Endothelial Growth Factor A
Guanine Genotype Endothelium endothelium Cell Survival Angiogenesis medicine.medical_treatment Neovascularization Physiologic Biology medicine.disease_cause Article chemistry.chemical_compound angiogenesis growth factors medicine Humans RNA Messenger Dinucleotide Repeats Promoter Regions Genetic Alleles Cells Cultured Cell Proliferation Growth factor Infant Newborn Endothelial Cells Genetic Variation Glutathione Molecular biology cytokines Endothelial stem cell Heme oxygenase Oxidative Stress Vascular endothelial growth factor A Phenotype medicine.anatomical_structure antioxidants Biochemistry chemistry Cytoprotection Enzyme Induction Inflammation Mediators Cardiology and Cardiovascular Medicine Heme Oxygenase-1 Thymine Oxidative stress |
| Popis: | Objective— Heme oxygenase-1 (HO-1) is an antioxidative, antiinflammatory, and cytoprotective enzyme that is induced in response to cellular stress. The HO-1 promoter contains a (GT)n microsatellite DNA, and the number of GT repeats can influence the occurrence of cardiovascular diseases. We elucidated the effect of this polymorphism on endothelial cells isolated from newborns of different genotypes. Methods and Results— On the basis of HO-1 expression, we classified the HO-1 promoter alleles into 3 groups: short (S) (most active, GT ≤23), medium (moderately active, GT=24 to 28), and long (least active, GT ≥29). The presence of the S allele led to higher basal HO-1 expression and stronger induction in response to cobalt protoporphyrin, prostaglandin-J 2 , hydrogen peroxide, and lipopolysaccharide. Cells carrying the S allele survived better under oxidative stress, a fact associated with the lower concentration of oxidized glutathione and more favorable oxidative status, as determined by measurement of the ratio of glutathione to oxidized glutathione. Moreover, they proliferated more efficiently in response to vascular endothelial growth factor A, although the vascular endothelial growth factor–induced migration and sprouting of capillaries were not influenced. Finally, the presence of the S allele was associated with lower production of some proinflammatory mediators, such as interleukin-1β, interleukin-6, and soluble intercellular adhesion molecule-1. Conclusion— The (GT)n promoter polymorphism significantly modulates a cytoprotective, proangiogenic, and antiinflammatory function of HO-1 in human endothelium. |
| Databáze: | OpenAIRE |
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