https://www.ncbi.nlm.nih.gov/pubmed/27170270
Histol Histopathol. 2017 Feb;32(2):129-136. doi: 10.14670/HH-11-778. Epub 2016 May 12.An immunohistochemical study of NFE2L2, KEAP1 and 8-hydroxy-2'-deoxyguanosine and the EMT markers SNAI2, ZEB1 and TWIST1 in metastatic melanoma.Hintsala HR1,2,3, Haapasaari KM4, Soini Y1, Karihtala P3.
Tiivistelmä .
Tausta: Tiedetään vain vähän redoxtasapainon säätelijöitten merkityksestä metastaattisessa melanoomassa, mutta jonkin verran on kuitenkin näyttöä siitä, että on olemassa eräs linkki solun redox-tilan ja epiteliaalisesta mesenkymaaliseksi transition (EMT) kesken.
- Abstract
- Role of redox balance regulators in metastatic melanomas, but there is some evidence for a link between epithelial-to-mesenchymal transition (EMT) and cellular redox status.
Menetelmät: Tutkijat vertailivat NFE2L2-, KEAP1-, 8-OHdG-, TWIST1-, SNAI2- ja ZEB1- proteiinien immunohistokemiallista ilmentymää primäärimelanomissa ja metastaaseissa kohortista, jossa oli 23 naevus-luonta, 66 malignia melanoma ja 22 metastaasia.
RESULTS:
- METHODS:We compared the immunohistochemical expression of nuclear factor erythroid-2-related factor 2 (NFE2L2), Kelch-like ECH-associated protein 1 (KEAP1), 8-hydroxy-2'-deoxyguanosine (8-OHdG), TWIST1, SNAI2 and ZEB1 between primary melanomas and metastases in a cohort of 23 nevi, 66 malignant melanomas and 22 metastases.
RESULTS:
- Nuclear NFE2L2 expression was higher (p=0.003) and cytoplasmic KEAP1 lower (p=0.026) in metastatic lesions than at primary sites. Nuclear NFE2L2 expression was associated with the presence of distant metastases (p=0.040) and with nuclear TWIST1 expression (p=0.002). Patients having both NFE2L2 and TWIST1 expression in nuclei had an extremely poor prognosis (p=0.0003).
- In multivariate analysis nuclear TWIST1 expression was an independent predictor of a poorer prognosis (HR 2.99, 95% CI 1.17-7.69; p=0.023) and the invasive TWIST1/ZEB1 phenotype showed poorer melanoma-specific survival (HR 7.28, 95% CI 2.23-23.77; p=0.001). Nuclear expression of 8-OHdG (p=0.001) was lower at metastatic sites than in primary lesions.
- CONCLUSIONS:EMT signalling and the KEAP1/NFE2L2-axis are likely to be involved in metastatic spread of malignant melanoma and also appear to have potential interactions.
- PMID:
- 27170270
- DOI:
- 10.14670/HH-11-778
- Avainsanoja:
- NFE2L2, nuclear factor erythroid-2-related factor 2.
- KEAP1, Kelch-like ECH-associated protein 1.
- 8-OHdG, 8-hydroxy-2'-deoxyguanosine.
- TWIST1,twist family bHLH transcription factor 1
- https://www.ncbi.nlm.nih.gov/gene/7291.
- SNAI2, Zinc finger protein SLUG, https://www.uniprot.org/uniprot/O43623
- ZEB1, Zinc finger E-box binding homeobox 1
- https://www.uniprot.org/uniprot/P37275.
Inga kommentarer:
Skicka en kommentar