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Aggressive neurobla...
Aggressive neuroblastomas have high p110alpha but low p110delta and p55alpha/p50alpha protein levels compared to low stage neuroblastomas
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- Fransson, Susanne, 1975 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för medicinsk genetik och klinisk genetik,Institute of Biomedicine, Department of Medical and Clinical Genetics,Department of Medical and Clinical Genetics, Sahlgrenska Cancer Center, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden / Department of Medical and Clinical Genetics, University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden
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- Kogner, Per (författare)
- Karolinska Institutet
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- Martinsson, Tommy, 1956 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för medicinsk genetik och klinisk genetik,Institute of Biomedicine, Department of Medical and Clinical Genetics,Department of Medical and Clinical Genetics, University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden
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- Ejeskär, Katarina (författare)
- Gothenburg University,Göteborgs universitet,Högskolan i Skövde,Institutionen för vård och natur,Forskningscentrum för Systembiologi,Department of Medical and Clinical Genetics, Sahlgrenska Cancer Center, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden,Institutionen för biomedicin, avdelningen för medicinsk genetik och klinisk genetik,Institute of Biomedicine, Department of Medical and Clinical Genetics
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(creator_code:org_t)
- 2013-04-18
- 2013
- Engelska.
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Ingår i: Journal of Molecular Signaling. - : BioMed Central (BMC). - 1750-2187. ; 8:1
- Relaterad länk:
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https://doi.org/10.1...
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http://jmolecularsig...
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https://gup.ub.gu.se... (primary) (free)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://gup.ub.gu.se...
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http://kipublication...
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Abstract
Ämnesord
Stäng
- Background: The phosphoinositide 3-kinase (PI3K)/Akt pathway is involved in neuroblastoma development where Akt/PKB activation is associated with poor prognosis. PI3K activity subsequently activates Akt/PKB, and as mutations of PI3K are rare in neuroblastoma and high levels of PI3K subunit p110delta is associated with favorable disease with low p-Akt/PKB, the levels of other PI3K subunits could be important for Akt activation.Methods: Protein levels of Type IA PI3K catalytic and regulatory subunits were investigated together with levels of phosphorylated Akt/PKB and the PI3K negative regulator PTEN in primary neuroblastoma tumors. Relation between clinical markers and protein levels were evaluated through t-tests. Results: We found high levels of p-Akt/PKB correlating to aggressive disease and p-Akt/PKB (T308) showed inverse correlation to PTEN levels. The regulatory isomers p55alpha/p50alpha showed higher levels in favorable neuroblastoma as compared with aggressive neuroblastoma. The PI3K-subunit p110alpha was found mainly in advanced tumors while p110delta showed higher levels in favorable neuroblastoma.Conclusions: Activation of the PI3K/Akt pathway is seen in neuroblastoma tumors, however the contribution of the different PI3K isoforms is unknown. Here we show that p110alpha is preferentially expressed in aggressive neuroblastomas, with high p-Akt/PKB and p110delta is mainly detected in favorable neuroblastomas, with low p-Akt/PKB. This is an important finding as PI3K-specific inhibitors are suggested for enrollment in treatment of neuroblastoma patients.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Cancer och onkologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Cancer and Oncology (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Cell- och molekylärbiologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Cell and Molecular Biology (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine (hsv//eng)
Nyckelord
- Akt
- Neuroblastoma
- Phosphoinositide 3-kinase
- PI3K
- Signaling
- Natural sciences
- Naturvetenskap
- Neuroblastoma
- PI3K
- Akt
- Signaling
- Phosphoinositide 3-kinase
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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