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Göteborgs universitets publikationer

The Phox2 pathway is differentially expressed in neuroblastoma tumors, but no mutations were found in the candidate tumor suppressor gene PHOX2A.

Författare och institution:
Annica Wilzén (Institutionen för biomedicin, avdelningen för medicinsk genetik och klinisk genetik); Staffan Nilsson (Institutionen för matematiska vetenskaper, matematisk statistik, Chalmers/GU); Rose-Marie Sjöberg (Institutionen för biomedicin, avdelningen för medicinsk genetik och klinisk genetik); Per Kogner (-); Tommy Martinsson (Institutionen för biomedicin, avdelningen för medicinsk genetik och klinisk genetik); Frida Abel (Institutionen för matematiska vetenskaper, matematisk statistik, Chalmers/GU)
Publicerad i:
International journal of oncology, 34 ( 3 ) s. 697-705
Artikel, refereegranskad vetenskaplig
Sammanfattning (abstract):
Neuroblastoma (NB), a tumor of the sympathetic nervous system, is the most common solid tumor in childhood. By microarray expression analysis (Affymetrix HU133A) important players in the noradrenalin biosynthesis pathway (DBH, DDC, GATA2, GATA3, PHOX2A, PHOX2B, SLC6A2 SLC18A1 and TH) were found to be among the top ranked genes in showing lower expression in unfavorable NB tumor types as compared to favorable ones. By quantitative PCR with TaqMan, this result was significantly verified for all transcripts (p<0.05, one-tailed) in a new set of 11 primary NB tumors (5 favorable vs. 6 unfavorable). PHOX2A, a downstream target of Phox2b, was found to be the sixth ranked gene from the microarray gene list. Since the PHOX2A gene is localized in a tumor suppressor candidate region at 11q, we screened this gene for mutations by DNA sequencing in 47 tumors of different stages. However, no critical changes were found that could support its role in tumor development or progression. Overall, the findings in this study either suggest that expression of this pathway could be a predictive differentiation marker of NB tumors, or our results could also imply that the noradrenalin biosynthesis pathway is involved in tumor pathogenesis.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
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Posten skapad:
2009-06-08 09:31
Posten ändrad:
2015-01-16 15:12

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