6533b871fe1ef96bd12d25a4
RESEARCH PRODUCT
Convergent sets of data from in vivo and in vitro methods point to an active role of Hsp60 in chronic obstructive pulmonary disease pathogenesis.
A. CapelliRita AnzaloneClaudia CampanellaGiampiero La RoccaGaetano CaramoriAndrea ZaniniPaola BrunFabio Luigi Massimo RicciardoloAntonio SpanevelloEverly Conway De MacarioChiara VicariSilvestro Ennio D'annaAlberto J.l. MacarioIsabella GnemmiAntonino Di StefanoFrancesco CappelloMauro CaroneBucchieri FabioGiovanni ZummoBruno Balbisubject
MaleSTRESSPulmonologyChronic Obstructive Pulmonary DiseasesNeutrophilsBiopsyGene ExpressionCD8-Positive T-Lymphocytesmedicine.disease_causeBiochemistryEpitheliumPulmonary function testingPathogenesisACTIVATIONPulmonary Disease Chronic ObstructiveMolecular Cell BiologyLungCOPDMultidisciplinaryReverse Transcriptase Polymerase Chain ReactionCOPD Hsp60QRCOPD heat shock proteins inflammationMiddle AgedImmunohistochemistrymedicine.anatomical_structureEXPERIMENTAL AUTOIMMUNE ENCEPHALOMYELITISMedicineFemalemedicine.symptomInflammation MediatorsSPINAL-CORDResearch ArticleEXPRESSIONanimal structuresCOPD; heat shock proteins; inflammationScienceImmunologyMolecular Sequence DataInflammationBronchichemical and pharmacologic phenomenaHEAT-SHOCK-PROTEIN EXPERIMENTAL AUTOIMMUNE ENCEPHALOMYELITIS ACUTE LUNG INJURY SPINAL-CORD CELL-DEATH KAPPA-B HEAT-SHOCK-PROTEIN-60 STRESS EXPRESSION ACTIVATIONKAPPA-BBiologyHEAT-SHOCK-PROTEINMicrobiologycomplex mixturesCell LineACUTE LUNG INJURYMolecular GeneticsIn vivoStress PhysiologicalHeat shock proteinmedicineGeneticsHumansCOPDRNA MessengerBiologyAgedLungMucous MembraneBase SequenceSettore BIO/16 - Anatomia UmanaMacrophagesfungiImmunityTranscription Factor RelAProteinsComputational BiologyChaperonin 60medicine.diseaseChaperone Proteinsrespiratory tract diseasesGene Expression RegulationCELL-DEATHHEAT-SHOCK-PROTEIN-60inflammationImmunologyheat shock proteinsClinical ImmunologyOxidative stressBiomarkersdescription
BackgroundIt is increasingly clear that some heat shock proteins (Hsps) play a role in inflammation. Here, we report results showing participation of Hsp60 in the pathogenesis of chronic obstructive pulmonary diseases (COPD), as indicated by data from both in vivo and in vitro analyses.Methods and resultsBronchial biopsies from patients with stable COPD, smoker controls with normal lung function, and non-smoker controls were studied. We quantified by immunohistochemistry levels of Hsp10, Hsp27, Hsp40, Hsp60, Hsp70, Hsp90, and HSF-1, along with levels of inflammatory markers. Hsp10, Hsp40, and Hsp60 were increased during progression of disease. We found also a positive correlation between the number of neutrophils and Hsp60 levels. Double-immunostaining showed that Hsp60-positive neutrophils were significantly increased in COPD patients. We then investigated in vitro the effect on Hsp60 expression in bronchial epithelial cells (16HBE) caused by oxidative stress, a hallmark of COPD mucosa, which we induced with H₂O₂. This stressor determined increased levels of Hsp60 through a gene up-regulation mechanism involving NFkB-p65. Release of Hsp60 in the extracellular medium by the bronchial epithelial cells was also increased after H₂O₂ treatment in the absence of cell death.ConclusionsThis is the first report clearly pointing to participation of Hsps, particularly Hsp60, in COPD pathogenesis. Hsp60 induction by NFkB-p65 and its release by epithelial cells after oxidative stress can have a role in maintaining inflammation, e.g., by stimulating neutrophils activity. The data open new scenarios that might help in designing efficacious anti-inflammatory therapies centered on Hsp60 and applicable to COPD.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-11-01 |