Sökning: WFRF:(Piqueras Marta)
> (2009) >
HIF-1{alpha} and HI...
HIF-1{alpha} and HIF-2{alpha} Are Differentially Regulated In vivo in Neuroblastoma: High HIF-1{alpha} Correlates Negatively to Advanced Clinical Stage and Tumor Vascularization.
-
Noguera, Rosa (författare)
-
- Fredlund, Erik (författare)
- Lund University,Lunds universitet,Institutionen för translationell medicin,Medicinska fakulteten,Department of Translational Medicine,Faculty of Medicine
-
Piqueras, Marta (författare)
-
visa fler...
-
- Pietras, Alexander (författare)
- Lund University,Lunds universitet,Institutionen för translationell medicin,Medicinska fakulteten,Department of Translational Medicine,Faculty of Medicine
-
- Beckman, Siv (författare)
- Lund University,Lunds universitet,Institutionen för translationell medicin,Medicinska fakulteten,Department of Translational Medicine,Faculty of Medicine
-
Navarro, Samuel (författare)
-
- Påhlman, Sven (författare)
- Lund University,Lunds universitet,Institutionen för translationell medicin,Medicinska fakulteten,Department of Translational Medicine,Faculty of Medicine
-
visa färre...
-
(creator_code:org_t)
- 2009
- 2009
- Engelska.
-
Ingår i: Clinical Cancer Research. - 1078-0432. ; 15:23, s. 7130-7136
- Relaterad länk:
-
http://www.ncbi.nlm....
-
visa fler...
-
http://dx.doi.org/10...
-
https://lup.lub.lu.s...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- PURPOSE: Hypoxia is considered to be a major driving force behind tumor angiogenesis. The stabilization and activation at hypoxia of the hypoxia-inducible factors HIF-1alpha and HIF-2alpha and the concomitant induction of expression of vascular endothelial growth factor (VEGF) and other proangiogenic factors provide a molecular frame for hypoxia-driven tumor angiogenesis. This study has investigated how HIF and VEGF protein levels relate to each other with regard to vascularization, tumor stage, and overall survival in neuroblastoma. EXPERIMENTAL DESIGN: Tissue cores taken from tumor specimens representing 93 children with neuroblastoma were arranged on a microarray and stained for HIF-1alpha, HIF-2alpha, VEGF, and CD31 proteins. Both fraction of positive cells and staining intensity were evaluated and protein levels were correlated with each other and with clinical variables. RESULTS: Although high levels of both HIF-1alpha (P < 0.001) and HIF-2alpha (P < 0.001) correlated positively to VEGF expression, they did not fully correlate with each other. Moreover, HIF-1alpha (P = 0.002) and VEGF (P < 0.001), but not HIF-2alpha, correlated negatively to vascularization as determined by CD31 staining abundance. VEGF expression or degree of vascularization did not correlate with tumor stage or overall survival. High HIF-1alpha levels correlated with low tumor stage (P < 0.001) and were associated with a favorable patient prognosis (P = 0.08). CONCLUSIONS: The discordant results on expression of HIF-1alpha and HIF-2alpha suggest that these two proteins are differentially regulated in vivo, thus reflecting distinctive protein expression/stabilization mechanisms. The association between HIF-1alpha and favorable outcome stresses the importance of discriminating HIF-2alpha from HIF-1alpha expression and has implications for using HIFs as treatment targets. (Clin Cancer Res 2009;15(23):OF1-7).
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Cancer och onkologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Cancer and Oncology (hsv//eng)
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
Hitta via bibliotek
Till lärosätets databas