LINE-1 ORF1p as a candidate biomarker in high grade serous ovarian carcinoma.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
27 01 2023
27 01 2023
Historique:
received:
16
08
2022
accepted:
25
01
2023
pubmed:
28
1
2023
medline:
1
2
2023
entrez:
27
1
2023
Statut:
epublish
Résumé
Long interspersed element 1 (LINE-1) open reading frame 1 protein (ORF1p) expression is a common feature of many cancer types, including high-grade serous ovarian carcinoma (HGSOC). Here, we report that ORF1p is not only expressed but also released by ovarian cancer and primary tumor cells. Immuno-multiple reaction monitoring-mass spectrometry assays showed that released ORF1p is confidently detectable in conditioned media, ascites, and patients' plasma, implicating ORF1p as a potential biomarker. Interestingly, ORF1p expression is detectable in fallopian tube (FT) epithelial precursors of HGSOC but not in benign FT, suggesting that ORF1p expression in an early event in HGSOC development. Finally, treatment of FT cells with DNA methyltransferase inhibitors led to robust expression and release of ORF1p, validating the regulatory role of DNA methylation in LINE-1 repression in non-tumorigenic tissue.
Identifiants
pubmed: 36707610
doi: 10.1038/s41598-023-28840-5
pii: 10.1038/s41598-023-28840-5
pmc: PMC9883229
doi:
Substances chimiques
Biomarkers
0
Proteins
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1537Subventions
Organisme : NCI NIH HHS
ID : U24 CA270823
Pays : United States
Informations de copyright
© 2023. The Author(s).
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