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Proteomics 2019-Oct

Proteomics Identification and Validation of Desmocollin-1 and Catechol-O-Methyltransferase as Proteins Associated with Breast Cancer Cell Migration and Metastasis.

Samo registrirani uporabniki lahko prevajajo članke
Prijava / prijava
Povezava se shrani v odložišče
Jakub Faktor
Lucia Knopfova
Petr Lapcik
Lucia Janacova
Vendula Paralova
Pavla Bouchalova
Petr Muller
Petr Benes
Pavel Bouchal

Ključne besede

Povzetek

Biological treatment of many cancers currently targets membrane bound receptors located on a cell surface. To identify novel membrane proteins associated with migration and metastasis of breast cancer cells, we selected and characterized a more migrating subpopulation of MDA-MB-231 breast cancer cell line. We applied a high resolution quantitative mass spectrometry with SILAC labeling to analyze their surfaceome and compared it with that of parental MDA-MB-231 cells. Among 824 identified proteins (FDR<0.01), 128 differentially abundant cell surface proteins with at least one transmembrane domain were found. Of these, (i) desmocollin-1 (DSC1) was validated as a protein connected with lymph node status of luminal A breast cancer, tumor grade and Her-2 status by immunohistochemistry in the set of 96 primary breast tumors, and (ii) catechol-O-methyltransferase (COMT) was successfully verified as a protein associated with lymph node metastasis of triple negative breast cancer as well as with tumor grade by targeted data extraction from the SWATH-MS data of the same set of tissues. Our findings indicate importance of both proteins for breast cancer development and metastasis and highlight the potential of biomarker validation strategy via targeted data extraction from SWATH-MS datasets. This article is protected by copyright. All rights reserved.

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