RGD Reference Report - Heme oxygenase-1 gene delivery by Sleeping Beauty inhibits vascular stasis in a murine model of sickle cell disease. - Rat Genome Database

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Heme oxygenase-1 gene delivery by Sleeping Beauty inhibits vascular stasis in a murine model of sickle cell disease.

Authors: Belcher, JD  Vineyard, JV  Bruzzone, CM  Chen, C  Beckman, JD  Nguyen, J  Steer, CJ  Vercellotti, GM 
Citation: Belcher JD, etal., J Mol Med (Berl). 2010 Jul;88(7):665-75. doi: 10.1007/s00109-010-0613-6. Epub 2010 Mar 23.
RGD ID: 10755565
Pubmed: PMID:20306336   (View Abstract at PubMed)
PMCID: PMC2877767   (View Article at PubMed Central)
DOI: DOI:10.1007/s00109-010-0613-6   (Journal Full-text)

Increases in heme oxygenase-1 (HO-1) and administration of heme degradation products CO and biliverdin inhibit vascular inflammation and vasoocclusion in mouse models of sickle cell disease (SCD). In this study, an albumin (alb) promoter-driven Sleeping Beauty (SB) transposase plasmid with a wild-type rat hmox-1 (wt-HO-1) transposable element was delivered by hydrodynamic tail vein injections to SCD mice. Eight weeks after injection, SCD mice had three- to five-fold increases in HO-1 activity and protein expression in liver, similar to hemin-treated mice. Immunohistochemistry demonstrated increased perinuclear HO-1 staining in hepatocytes. Messenger RNA transcription of the hmox-1 transgene in liver was confirmed by quantitative real-time polymerase chain reaction restriction fragment length polymorphism (qRT-PCR RFLP) with no detectible transgene expression in other organs. The livers of all HO-1 overexpressing mice had activation of nuclear phospho-p38 mitogen-activated protein kinase (MAPK) and phospho-Akt, decreased nuclear expression of nuclear factor-kappa B (NF-kappaB) p65, and decreased soluble vascular cell adhesion molecule-1 (sVCAM-1) in serum. Hypoxia-induced stasis, a characteristic of SCD, but not normal mice, was inhibited in dorsal skin fold chambers in wt-HO-1 SCD mice despite the absence of hmox-1 transgene expression in the skin suggesting distal effects of HO activity on the vasculature. No protective effects were seen in SCD mice injected with nonsense (ns-) rat hmox-1 that encodes carboxy-truncated HO-1 with little or no enzyme activity. We speculate that HO-1 gene delivery to the liver is beneficial in SCD mice by degrading pro-oxidative heme, releasing anti-inflammatory heme degradation products CO and biliverdin/bilirubin into circulation, activating cytoprotective pathways and inhibiting vascular stasis at sites distal to transgene expression.



RGD Manual Disease Annotations    Click to see Annotation Detail View

  
Object SymbolSpeciesTermQualifierEvidenceWithNotesSourceOriginal Reference(s)
HMOX1Humansickle cell anemia treatmentISOHmox1 (Rattus norvegicus) RGD 
Hmox1Ratsickle cell anemia treatmentIMP  RGD 
Hmox1Mousesickle cell anemia treatmentISOHmox1 (Rattus norvegicus) RGD 

Objects Annotated

Genes (Rattus norvegicus)
Hmox1  (heme oxygenase 1)

Genes (Mus musculus)
Hmox1  (heme oxygenase 1)

Genes (Homo sapiens)
HMOX1  (heme oxygenase 1)


Additional Information