Abstract | BACKGROUND:
Ovarian cancer is the leading cause of death among all gynecological disorders. Aberrant glycosylation, or more specifically, increased sialylation of proteins has been observed in ovarian cancer. Several sialyltransferase genes have been shown to be up-regulated at both the mRNA and protein levels in a number of cancers, including that of the ovary. ST6GAL1 (β-galactosamide α2,6-sialyltranferase 1) gene expression has previously been shown to be upregulated in ovarian cancers of all major subtypes. METHODS: RESULTS: In all of the samples analyzed in the glycoproteomic portion of the study, we have identified 579 glycosylation sites on 333 proteins. Of these, 13 were exclusively identified in biological fluids from ovarian cancer patients, and another eight were common to these fluids and the ovarian cancer cell line supernatants. CONCLUSIONS: The proteins identified in the present study could form the basis for future studies examining and quantifying their sialylation status as biomarkers of ovarian cancer.
|
Authors | Uros Kuzmanov, Natasha Musrap, Hari Kosanam, Christopher R Smith, Ihor Batruch, Apostolos Dimitromanolakis, Eleftherios P Diamandis |
Journal | Clinical chemistry and laboratory medicine
(Clin Chem Lab Med)
Vol. 51
Issue 7
Pg. 1467-76
(Jul 2013)
ISSN: 1437-4331 [Electronic] Germany |
PMID | 23241603
(Publication Type: Journal Article)
|
Chemical References |
- Biomarkers, Tumor
- Glycoproteins
- Lectins
- Sialyltransferases
|
Topics |
- Adenocarcinoma, Clear Cell
(diagnosis, genetics, metabolism)
- Adenocarcinoma, Mucinous
(diagnosis, genetics, metabolism)
- Adult
- Amino Acid Sequence
- Biomarkers, Tumor
(genetics, isolation & purification)
- Case-Control Studies
- Cell Line, Tumor
- Cystadenocarcinoma, Serous
(diagnosis, genetics, metabolism)
- Female
- Glycoproteins
(genetics, isolation & purification)
- Glycosylation
- Humans
- Lectins
(chemistry)
- Middle Aged
- Molecular Sequence Annotation
- Molecular Sequence Data
- Ovarian Neoplasms
(diagnosis, genetics, metabolism)
- Proteomics
- Sialyltransferases
(genetics, isolation & purification)
- Tandem Mass Spectrometry
|